JP6930228B2 - Holder for heart-lung machine - Google Patents

Description

The present invention relates to a holder for an artificial heart-lung machine for holding an artificial heart-lung machine, and in particular, belongs to the technical field of a structure capable of holding a pump portion and an artificial lung portion in a state of being connected by a tube.

Conventionally, the blood supply and devascularization are inserted into the patient's blood vessel, the patient's blood is devascularized from the devascularization by the action of the pump part, the devascularized blood is oxygenated in the artificial lung part, and then from the blood supply. Return to the patient, so-called percutaneous cardiopulmonary support (PCPS), may be given to patients with serious medical conditions that require support for cardiopulmonary function.

In PCPS, an artificial heart-lung machine including the above-mentioned blood supply tube, devascularization, a pump section driven by an electric motor, and an artificial lung section is used. The port of the pump portion and the port of the artificial lung portion are connected by a flexible tube (see, for example, Patent Document 1). Since the tube of this artificial heart-lung machine is flexible, in general use, the pump part and the artificial lung part are fixed to the holder for the artificial heart-lung machine so that the positional relationship between the two does not shift during operation. It is being used.

Japanese Unexamined Patent Publication No. 2015-205506

By the way, in the heart-lung machine circuit, it is necessary to perform a process called priming in which physiological saline is circulated in the circuit to remove air in the circuit before the start of operation. After priming, the heart-lung machine is installed near the patient during operation of the heart-lung machine. By fixing the pump part and the artificial lung part to the holder for the artificial cardiopulmonary circuit during priming and operation, it is possible to prevent the relative positional relationship between the pump part and the artificial lung part from shifting. At the same time, it becomes possible to adjust the positions of the pump part and the artificial lung part. Therefore, in PCPS, the holder for the heart-lung machine is an important component along with the heart-lung machine.

As described above, in priming before the start of operation, it is necessary to bleed the air from the artificial lung, but since the artificial lung has a complicated internal shape, the outlet port of the artificial lung can be easily released. Must be kept in a vertically oriented position. On the other hand, during operation, the tube length should be as short as possible to minimize the amount of blood removed from the patient, and pressure changes due to the drop between the artificial lung and the pump should be avoided. The exit port of the lung should be located near the height of the pump and kept in a horizontal position. That is, since the requirements are different between priming and driving, it is necessary to switch the artificial lung portion between the priming posture and the driving posture.

Therefore, for example, as shown in FIGS. 10 and 11, a pump part fixing member 100 for fixing the pump part 10, an artificial lung part fixing member 200 for fixing the artificial lung part 20, and a pump part fixing member 100 It is conceivable that the holder for the artificial heart-lung circuit is formed by the shaft 300 that connects the artificial lung portion fixing member 200 relatively rotatably. According to this holder for the artificial heart-lung machine, the pump portion fixing member 100 and the artificial lung portion fixing member 200 are connected by a shaft 300. Therefore, for example, the pump portion fixing member 100 is fixed and the artificial lung portion fixing member 200 is supported. By rotating around the shaft 300, the artificial lung portion 20 can be switched between the driving posture shown by the solid line in FIGS. 10 and 11 and the priming posture shown by the virtual line only in FIG. As shown in FIG. 11, in the driving posture, the pump portion 10 and the artificial lung portion 20 have substantially the same height, so that the pressure change due to the head becomes extremely small. In this state, the length of the tube 30 connecting the port 10a of the pump unit 10 and the port 20a of the artificial lung unit 20 is shortened as much as possible to minimize the amount of blood removed from the patient.

When the priming posture shown by the virtual line in FIG. 11 is adopted, the port 20a of the artificial lung portion 20 can be kept in a vertically facing posture, but the port 20a of the artificial lung portion 20 approaches the port 10a of the pump portion 10. The distance between the port 20a of the artificial lung section 20 and the port 10a of the pump section 10 is shorter than that of the driving posture. When the distance between the port 20a of the artificial lung portion 20 and the port 10a of the pump portion 10 becomes short, as shown by the virtual line, the intermediate portion 30a of the tube 30 is bent, and the bent portion is blocked, so-called kink. It may occur. In order to prevent kink, it is conceivable to set the length of the tube 30 to be longer so that the tube 30 has a margin, but doing so will increase the amount of blood removed from the patient. Not preferred.

The present invention has been made in view of this point, and an object of the present invention is to make it possible to switch between the pump part and the artificial lung part of the artificial heart-lung machine between the driving posture and the priming posture. The purpose is to suppress the occurrence of kink in the tube during the priming posture while shortening the length of the tube connecting the portion and the artificial lung portion.

In order to achieve the above object, in the present invention, when the pump part and the artificial lung part are switched from the driving posture to the priming posture, the distance between the port of the pump part and the port of the artificial lung part does not change. ..

The first invention is an artificial heart-lung machine that holds an artificial heart-lung machine circuit including a pump part, an artificial lung part, a port of the pump part, and a flexible tube connecting the port of the artificial lung part. In the circuit holder, the artificial heart-lung machine holder includes a pump portion fixing member to which the pump portion is fixed, an artificial lung portion fixing member to which the artificial lung portion is fixed, the pump portion fixing member, and the artificial lung. By rotating the part fixing member relatively, the artificial lung portion is made higher than the pump portion, and the priming posture in which the port of the artificial lung portion is directed in the vertical direction and the artificial lung portion are primed. It is provided with a connecting means which is arranged lower than the posture and can switch the port of the artificial lung portion to the operating posture facing in the horizontal direction, and the connecting means includes the port of the pump portion and the above. The feature is that the relative positions of the port of the pump portion and the port of the artificial lung portion are controlled so that the distance from the port of the artificial lung portion becomes equal in the priming posture and the driving posture. do.

According to this configuration, in the priming posture, the artificial lung part is higher than the pump part, and the port of the artificial lung part faces in the vertical direction, so that the air in the artificial heart-lung machine flows from the pump part to the port of the artificial lung part. It is easy and surely discharged from the port. When switching from this priming posture to the driving posture, the switching can be easily performed by relatively rotating the pump portion fixing member and the artificial lung portion fixing member. Then, in the driving posture, the height of the artificial lung portion is lower than that in the priming posture, and the port of the artificial lung portion faces in the horizontal direction.

In the present invention, the relative between the port of the pump part and the port of the artificial lung part is made by the connecting means so that the distance between the port of the pump part and the port of the artificial lung part is almost the same between the priming posture and the driving posture. Position is controlled. Therefore, even if the length of the tube connecting the pump portion and the artificial lung portion is shortened, the occurrence of kink in the tube is suppressed.

A second aspect of the invention is the first aspect of the first invention, in which one side of the connecting means is rotatably connected to the pump portion fixing member and the other side is rotatably connected to the artificial lung portion fixing member. It is characterized by including a link member and a second link member rotatably connected to the pump portion fixing member on one side and rotatably connected to the artificial lung portion fixing member on the other side.

According to this configuration, the pump portion fixing member and the artificial lung portion fixing member are connected by the first link member and the second link member. Then, when trying to rotate one fixing member with respect to the other fixing member, the movement of one fixing member accurately draws a predetermined trajectory by the first link member and the second link member. Is controlled by.

The third invention is characterized in that, in the second invention, the extending direction of the rotation center line of the first link member coincides with the extending direction of the rotation center line of the second link member. do.

According to this configuration, the directions of the rotation center lines of the first link member and the second link member may be the same, so that the configuration is simpler.

In the fourth invention, in the third invention, the first link member and the second link member are connected to the pump portion fixing member, and the rotation center of the first link member and the second link member. A first connecting plate portion extending in a direction orthogonal to the linear direction is provided, and the first link member and the second link member are connected to the artificial lung portion fixing member, and the first link member and the second link member are connected. A second connecting plate portion extending in a direction orthogonal to the rotation center line direction of the link member is provided, and the first link member and the second link member are the first connecting plate portion and the second connecting plate portion. It is characterized in that it is arranged so as to be lined up in the thickness direction of.

According to this configuration, the first link member and the second link member are arranged so as to be arranged in the thickness direction of the connecting plate portion, so that when viewed along the rotation center line direction, the first link member and the second link member are arranged. It will be positioned so that it overlaps with the second link member. As a result, the holder for the heart-lung machine circuit including the first link member and the second link member becomes compact.

In the fifth aspect of the invention, in the fourth invention, the second connecting plate portion of the artificial lung portion fixing member is arranged between the other side of the first link member and the other side of the second link member. It is characterized by being.

According to this configuration, the other side of the first link member and the other side of the second link member are arranged so as to sandwich the second connecting plate portion from both sides in the thickness direction, and are connected to the second connecting plate portion. NS. Therefore, the second connecting plate portion is supported from both sides in the thickness direction, so that the second connecting plate portion is stable.

The sixth invention is the invention of any one of the second to the fifth, wherein the first link member and the second link member are along the rotation center line direction when the artificial lung portion is in the driving posture. It is characterized in that they are arranged so as to intersect each other.

According to this configuration, since the first link member and the second link member are arranged so as to intersect each other, the pump portion fixing member and the artificial lung portion fixing even when both link members need to be lengthened. It is possible to shorten the separation distance from the member.

According to the first invention, the relative between the port of the pump part and the port of the artificial lung part so that the distance between the port of the pump part and the port of the artificial lung part is equal in the priming posture and the driving posture. Position can be controlled. As a result, it is possible to suppress the occurrence of kink in the tube during the priming posture while shortening the length of the tube connecting the pump portion and the artificial lung portion.

According to the second invention, one of the pump portion fixing member and the artificial lung portion fixing member is attached to the other fixing member while having a simple structure consisting of the first link member and the second link member. When trying to rotate, the movement of one fixing member can be accurately controlled.

According to the third invention, since the directions of the rotation center lines of the first link member and the second link member may be the same, a simpler configuration can be obtained.

According to the fourth invention, the first link member and the second link member are arranged so as to be aligned in the thickness direction of the first connecting plate portion of the pump portion fixing member and the second connecting plate portion of the artificial lung portion fixing member. Therefore, the holder for the artificial heart-lung machine can be made compact.

According to the fifth invention, since the second connecting plate portion of the artificial lung portion fixing member is arranged between the other side of the first link member and the other side of the second link member, the second connecting plate portion is provided. The 1-link member and the 2nd link member can be supported from both sides in the thickness direction, and the second connecting plate portion can be stabilized.

According to the sixth invention, since the first link member and the second link member are arranged so as to intersect each other when viewed along the rotation center line direction, both link members need to be lengthened. Even if there is, the separation distance between the pump portion fixing member and the artificial lung portion fixing member can be shortened to make the artificial cardiopulmonary circuit holder compact.

It is a perspective view which looked at the holder for the artificial heart-lung machine circuit which concerns on embodiment from the upper side, and shows the case where the artificial lung part is in a priming posture. It is a front view which looked at the holder for a heart-lung machine circuit from the front side, and shows the case where the artificial lung part is in a priming posture. It is a rear view which looked at the holder for a heart-lung machine circuit from the back side, and shows the case where the artificial lung part is in a priming posture. It is a top view of the holder for the heart-lung machine circuit, and shows the case where the heart-lung machine part is in the priming posture. It is a figure corresponding to FIG. 3 in the case where the artificial lung portion is between the priming posture and the driving posture. FIG. 3 is a view corresponding to FIG. 3 when the artificial lung portion is in the driving posture. It is a front view of the 1st link member. It is a front view of the 2nd link member. It is a schematic diagram which shows the positional relationship between the port of a pump part and the port of an artificial lung part at the time of switching the posture of an artificial lung part. It is a perspective view which looked at the holder for the artificial heart-lung machine circuit which concerns on the prior art from above, and shows the case where the artificial lung part is in a driving posture. It is a front view of the holder for the artificial heart-lung machine which concerns on the conventional example, and shows the case where the artificial lung part is in a driving posture.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is essentially merely an example and is not intended to limit the present invention, its application or its use.

FIG. 1 is a perspective view of the holder 1 for a heart-lung machine circuit according to the embodiment of the present invention as viewed from above. The holder 1 for the heart-lung machine is an instrument for holding the heart-lung machine circuit A.
(Structure of heart-lung machine circuit A)
The artificial heart-lung machine circuit A has a conventionally well-known structure, and includes a pump unit 10, an artificial lung unit 20, and a flexible tube 30, and further, although not shown, a blood vessel feeding device and a blood vessel devascularization. ing. The blood supply vessel is inserted and placed in the patient's artery, and the devascularization is inserted and placed in the patient's vein. The heart-lung machine circuit A can be used when performing percutaneous cardiopulmonary support (PCPS).

The pump unit 10 is composed of an electric motor 11, an impeller (not shown) rotationally driven by the electric motor 11, and a centrifugal pump including a housing 12 for accommodating the impeller. It is an instrument that works as an alternative. Electric power is supplied to the electric motor 11 from an external control device (not shown). The housing 12 is provided with an inflow port 12a into which the blood bleeding from the devascularized blood flows in, and a discharge port 12b for discharging the blood inside the housing 12. The inflow port 12a and the discharge port 12b of the pump portion 10 are integrally molded with the housing 12 and are made of a hard member, and specifically, the material is harder than the tube 30.

The inflow port 12a of the pump portion 10 is formed in a tubular shape protruding from the housing 12 in the axial direction of the impeller. The downstream side of the devascularization is connected to the inflow port 12a. Further, the discharge port 12b of the pump portion 10 is formed in a tubular shape protruding from the housing 12 in the tangential direction of the impeller. By inserting the discharge port 12b into the upstream end 31 of the tube 30, the discharge port 12b and the upstream end 31 of the tube 30 are connected.

The artificial lung section 20 has a conventionally well-known structure, includes a hollow fiber (not shown) and a casing 21 for accommodating the hollow fiber, and oxygenates the blood sent from the pump section 10. It is configured so that it can be sent to the outside. The casing 21 is provided with an inflow port 21a into which blood sent from the pump unit 10 flows in and a discharge port 12b for discharging oxygenated blood. The inflow port 21a and the discharge port 21b are integrally molded with the casing 21 and are made of a hard member, and specifically, the material is harder than the tube 30.

By inserting the inflow port 21a of the artificial lung portion 20 into the downstream end portion 32 of the tube 30, the inflow port 21a and the downstream end portion 32 of the tube 30 are connected. Further, the upstream side of the blood delivery vessel is connected to the discharge port 21b of the artificial lung portion 20. Further, the housing 21 of the artificial lung portion 20 is also provided with an outlet port 21c.

Before the start of operation, the heart-lung machine circuit A needs to perform a step called priming in which a physiological saline solution is circulated in the heart-lung machine circuit A to remove air in the heart-lung machine circuit A. After priming, the heart-lung machine circuit A is installed in the vicinity of the patient while the heart-lung machine circuit A is in operation. By fixing the pump unit 10 and the artificial lung unit 20 to the artificial cardiopulmonary circuit holder 1 during priming and operation, the relative positional relationship between the pump unit 10 and the artificial lung unit 20 does not shift. At the same time, it becomes possible to adjust the positions of the pump unit 10 and the artificial lung unit 20.

In priming before the start of operation, it is necessary to bleed the air from the artificial lung portion 20. Since the artificial lung portion 20 has a complicated internal shape, it is necessary to keep the inflow port 21a and the outlet port 21c of the artificial lung portion 20 in a vertically facing posture so that air can easily flow out. On the other hand, during operation, the length of the tube 30 should be as short as possible in order to minimize the amount of blood removed from the patient, and the pressure change due to the head between the artificial lung section 20 and the pump section 10 should be avoided. Therefore, it is necessary to arrange the inflow port 21a of the artificial lung portion 20 near the height of the pump portion 10 and keep it in a horizontal posture.

That is, since the requirements are different between priming and driving, it is necessary to switch the artificial lung portion 20 between the priming posture and the driving posture, and the holder 1 for the artificial heart-lung machine switches the posture of the artificial lung portion 20. Is configured to allow

(Overall configuration of holder 1 for heart-lung machine)
The holder 1 for the artificial heart-lung machine includes a pump portion fixing member 40 to which the pump portion 10 is fixed, an artificial lung portion fixing member 50 to which the artificial lung portion 20 is fixed, a first link member 60, and a second link member 70. And have. In the description of this embodiment, as shown in each figure, the upper side, the lower side, the front side, and the back side of the holder 1 for the artificial heart-lung machine are defined, and the pump unit 10 is arranged on the left side when viewed from the front side. Therefore, it is called the pump side, and the right side when viewed from the labor side is called the lung side because the artificial lung portion 20 is arranged. This is for convenience of explanation only, and does not limit the usage state of the present invention. For example, the front side and the back side may be opposite, and the pump side and the lung side are opposite. There may be.

The first link member 60 and the second link member 70 are members for connecting the pump portion fixing member 40 and the artificial lung portion fixing member 50, and constitute the connecting means of the present invention. Specifically, the first link member 60 and the second link member 70 make the artificial lung portion 20 more than the pump portion 10 by relatively rotating the pump portion fixing member 40 and the artificial lung portion fixing member 50. The inflow port 21a and the exit port 21c of the artificial lung portion 20 are placed high and the priming posture (shown in FIGS. 1 to 4) in which the inflow port 21a and the exit port 21c are oriented in the vertical direction, and the artificial lung portion 20 is arranged lower than in the priming posture. In addition, the inflow port 21a and the exit port 21c of the artificial lung portion 20 are connected so as to be switchable to the operating posture (shown in FIG. 6) facing in the horizontal direction.

(Structure of pump part fixing member 40)
The pump portion fixing member 40 includes a pump side main body portion 41 formed by molding a high-strength plate material such as an aluminum alloy, and a clamp portion 42. The pump-side main body 41 includes a vertical plate portion 41a extending in the vertical direction on the back side thereof, a fixing plate portion 41b extending from the edge portion of the vertical plate portion 41a to the front side, and a first connecting plate portion 41c (FIGS. 2 and 2). 3). The pump portion 10 is fixed to the fixing plate portion 41b. The pump portion 10 is fixed to the fixing plate portion 41b in a state where the electric motor 11 is located on the back side and the housing 12 is located on the front side. The axis of rotation is approximately horizontal and extends from the back to the front. The inflow port 12a of the pump portion 10 is arranged so as to project toward the front side, and the discharge port 12b is located at the upper part of the housing 12 and is arranged so as to project toward the lung side. The pump portion 10 is positioned in a state of being fastened to the fixed plate portion 41b by the fastening band 41d of the fixed plate portion 41b.

A clamp portion 42 is fixed to the inner surface of the vertical plate portion 41a so as to project to the inner side. The clamp portion 42 is a member for detachably attaching the holder 1 for the heart-lung machine circuit to a member (not shown) such as a bar. By operating the operation portion 42a of the clamp portion 42, it is possible to switch between a state in which the bar member is sandwiched (clamped state) and a state in which the bar member is not clamped (non-clamped state). The structure of the clamp portion 42 is not limited to the structure shown in the figure, and may be any structure that can be detachably attached to the bar member. When attached to the bar by the clamp portion 42, the inflow port 12a of the pump portion 10 projects toward the front side, and the discharge port 12b is located at the upper part of the housing 12 and projects toward the lung side.

The first connecting plate portion 41c extends from the lung-side edge of the vertical plate portion 41a toward the lung side and extends in the vertical direction. One side of the first link member 60 and one side of the second link member 70 are rotatably connected to the first connecting plate portion 41c.

(Structure of artificial lung fixing member 50)
The artificial lung portion fixing member 50 is formed by molding a high-strength plate material such as an aluminum alloy. The artificial lung portion fixing member 50 includes a back side vertical plate portion 51 extending in the vertical direction on the back side thereof, an end plate portion 52 extending from the edge portion of the back side vertical plate portion 51 to the front side, and a second connecting plate portion 53. (Also shown in FIGS. 2 and 3). The back side vertical plate portion 51 and the end plate portion 52 are substantially orthogonal to each other. The artificial lung portion 20 is fixed and positioned on the back side vertical plate portion 51 and the end plate portion 52 by the frame member 54 provided on the back side vertical plate portion 51 and the end plate portion 52. As the fixed structure of the artificial lung portion 20, various conventionally used structures can be applied. Further, the end plate portion 52 is provided with a handle portion 52a. The holder 1 for the heart-lung machine can be conveyed by holding the handle portion 52a. Further, when switching the posture of the artificial lung 20 between the priming posture and the driving posture, the artificial lung portion fixing member 50 can be operated by holding the handle portion 52a.

The second connecting plate portion 53 extends from the edge portion of the back side vertical plate portion 51 near the pump portion 10 and extends in the vertical direction. The other side of the first link member 60 and the other side of the second link member 70 are rotatably connected to the second connecting plate portion 53, respectively.

(Structure of 1st link member 60)
As shown in FIG. 7, the first link member 60 is made of a highly rigid plate material that is long in a predetermined direction. One side in the longitudinal direction of the first link member 60 is a one-side connecting portion 61 connected to the first connecting plate portion 41c of the pump portion fixing member 40. The other side in the longitudinal direction of the first link member 60 is the other side connecting portion 62 connected to the second connecting plate portion 53 of the artificial lung portion fixing member 50. The one-side connecting portion 61 is formed with a one-side through hole 61a penetrating in the thickness direction of the first link member 60. The support shaft 63 shown in FIG. 1 is rotatably inserted into the one-side through hole 61a. As shown in FIG. 2 and the like, the support shaft 63 penetrates the first connecting plate portion 41c of the pump portion fixing member 40 in the thickness direction (direction from the front side to the back side of the heart-lung machine holder 1). It is fixed so as not to come off from the first connecting plate portion 41c. The support shaft 63 is located near the upper portion of the first connecting plate portion 41c. Therefore, the one-side connecting portion 61 of the first link member 60 becomes rotatable around the horizontal axis in the vicinity of the upper portion of the first connecting plate portion 41c.

The other side connecting portion 62 is formed with a other side through hole 62a that penetrates in the thickness direction of the first link member 60. A support shaft 64 is rotatably inserted into the other side through hole 62a. As shown in FIGS. 2 and 3, the support shaft 64 penetrates the second connecting plate portion 53 of the pump portion fixing member 40 in the thickness direction (direction from the front side to the back side of the holder 1 for the heart-lung machine). It is fixed so as not to come off from the second connecting plate portion 53. The support shaft 64 is located near the pump portion 10 side of the second connecting plate portion 53. Therefore, the other side connecting portion 62 of the first link member 60 can rotate around the horizontal axis in the vicinity of the pump portion 10 side of the second connecting plate portion 53. Examples of the fixing structure of the support shafts 63 and 64 include a structure using caulking fixing and bolts and nuts.

Further, a bent portion 65 is provided between the one-side connecting portion 61 and the other-side connecting portion 62 of the first link member 60 in a portion closer to the one-side connecting portion 61.

(Structure of 2nd link member 70)
As shown in FIG. 8, the second link member 70 is made of a highly rigid plate material that is long in a predetermined direction. The length of the second link member 70 is set shorter than the length of the first link member 60. Further, the width of the second link member 70 is set to be narrower than the width of the first link member 60 as a whole.

One side in the longitudinal direction of the second link member 70 is a one-side connecting portion 71 connected to the first connecting plate portion 41c of the pump portion fixing member 40. The other side in the longitudinal direction of the second link member 70 is the other side connecting portion 72 connected to the second connecting plate portion 53 of the artificial lung portion fixing member 50. The one-side connecting portion 71 is formed with a one-side through hole 71a that penetrates in the thickness direction of the first link member 60. A support shaft 73 is rotatably inserted into the one-side through hole 71a. As shown in FIG. 1 and the like, the support shaft 73 penetrates the first connecting plate portion 41c of the pump portion fixing member 40 in the thickness direction (direction from the front side to the back side of the holder 1 for the heart-lung machine). , It is fixed so as not to come off from the first connecting plate portion 41c. The support shaft 73 is arranged on the first connecting plate portion 41c so as to be separated from the penetrating portion of the support shaft 63 on the lower side. Therefore, the one-side connecting portion 71 of the second link member 70 can rotate about the horizontal axis below the support shaft 63 of the first connecting plate portion 41c.

The other side connecting portion 72 is formed with the other side through hole 72a penetrating in the thickness direction of the second link member 70. A support shaft 74 is rotatably inserted into the other side through hole 72a. As shown in FIGS. 2 and 3, the support shaft 74 penetrates the second connecting plate portion 53 of the pump portion fixing member 40 in the thickness direction (direction from the front side to the back side of the holder 1 for the heart-lung machine). It is fixed so as not to come off from the second connecting plate portion 53. The support shaft 74 is arranged near the pump portion 10 side of the second connecting plate portion 53 and away from the support shaft 64. Therefore, the other side connecting portion 72 of the second link member 70 can rotate around the horizontal axis in the vicinity of the pump portion 10 side of the second connecting plate portion 53. As for the fixing structures of the support shafts 73 and 74, for example, caulking fixing, bolts and nuts may be used.

Further, the extending directions of the support shafts 63, 64, 73, and 74 are all directions from the front side to the back side of the holder 1 for the heart-lung machine. Therefore, the extending direction of the rotation center line of the first link member 60 coincides with the extending direction of the rotation center line of the second link member 70. Further, the first connecting plate portion 41c of the pump portion fixing member 40 extends in a direction orthogonal to the rotation center line direction of the first link member 60 and the second link member 70. Further, the second connecting plate portion 53 of the artificial lung portion fixing member 50 extends in a direction orthogonal to the direction of the rotation center line of the first link member 60 and the second link member 70.

(Connecting position and shape of the first link member 60 and the second link member 70)
As shown in FIG. 1, the one-side connecting portion 61 of the first link member 60 and the one-side connecting portion 71 of the second link member 70 are arranged on the front side of the first connecting plate portion 41c of the pump portion fixing member 40. ing. Further, the one-side connecting portion 71 of the second link member 70 is arranged on the front side of the one-side connecting portion 61 of the first link member 60. Further, as shown in FIGS. 2 and 3, the other side connecting portion 62 of the first link member 60 is arranged on the back side of the second connecting plate portion 53 of the artificial lung portion fixing member 50, and the second link. The other side connecting portion 72 of the member 70 is arranged on the front side of the second connecting plate portion 53 of the artificial lung portion fixing member 50. That is, the first link member 60 and the second link member 70 are arranged so as to be aligned in the thickness direction of the first connecting plate portion 41c and the second connecting plate portion 53. Further, the second connecting plate portion 53 is arranged between the other side connecting portion 62 of the first link member 60 and the other side connecting portion 72 of the second link member 70.

Further, the first link member 60 and the second link member 70 intersect with each other when viewed along the rotation center line direction when the artificial lung portion 20 is in the operating posture (shown in FIG. 6). Be placed. Further, the first link member 60 and the second link member 70 are viewed along the rotation center line direction and intersect with each other even when the artificial lung portion 20 is in the priming posture (shown in FIG. 2 and the like). Be placed.

The first link member 60 and the second link member 70 are pumped so that the distance between the discharge port 12b of the pump unit 10 and the inflow port 21a of the artificial lung unit 20 is equal between the priming posture and the operating posture. It is configured to control the relative position of the discharge port 12b of the portion 10 and the inflow port 21a of the artificial lung portion 20.

This will be described in detail with reference to FIG. FIG. 9 is a schematic view showing the positional relationship between the discharge port 12b of the pump unit 10 and the inflow port 21a of the artificial lung unit 20, and the holder 1 for the artificial heart-lung machine is viewed from the front. In FIG. 9, “0 °” indicates a state in which the artificial lung portion 20 is in the driving posture and the center line C of the inflow port 21a of the artificial lung portion 20 is substantially horizontal. “45 °” is a state in which the artificial lung portion 20 is between the driving posture and the priming posture, and the center line C of the inflow port 21a of the artificial lung portion 20 is inclined by 45 ° with respect to the horizon. Shows the case. “90 °” indicates a state in which the artificial lung portion 20 is in the priming posture and the center line C of the inflow port 21a of the artificial lung portion 20 is substantially vertical.

Further, it is assumed that the pump unit 10 is fixed and does not move, and the discharge port 12b of the pump unit 10 is in a posture in which the center line B thereof is substantially horizontal.

When the artificial lung portion 20 is in the operating posture (“0 °”), the center line B of the discharge port 12b of the pump portion 10 and the center line C of the inflow port 21a of the artificial lung portion 20 are abbreviated. It is horizontal. Here, an arc D1 having a center line B of the discharge port 12b and a center line C of the inflow port 21a of the artificial lung portion 20 as tangent lines is defined. When the artificial lung portion 20 is in the driving posture, the center line B of the discharge port 12b and the center line C of the inflow port 21a of the artificial lung portion 20 are substantially horizontal, so that the radius of the arc D1 is extremely large. (Becomes infinite) and approximates a straight line.

When it is at "45 °", the angle formed by the center line B of the discharge port 12b of the pump unit 10 and the center line C of the inflow port 21a of the artificial lung unit 20 is approximately 45 °. Here, an arc D2 having a center line B of the discharge port 12b and a center line C of the inflow port 21a of the artificial lung portion 20 as tangent lines is defined. The radius of the arc D2 is smaller than that of the arc D1.

When the artificial lung portion 20 is in the priming posture (“90 °”), the center line B of the discharge port 12b of the pump portion 10 and the center line C of the inflow port 21a of the artificial lung portion 20 are substantially orthogonal to each other. .. Here, an arc D3 having a center line B of the discharge port 12b and a center line C of the inflow port 21a of the artificial lung portion 20 as tangent lines is defined. The radius of the arc D3 is smaller than that of the arc D2.

The length of the arc D1 between the center point E on the tip surface of the discharge port 12b of the pump unit 10 and the center point F1 on the tip surface of the inflow port 21a of the artificial lung unit 20 at "0 °" and the center point. The length of the arc D2 between E and the center point F2 on the tip surface of the inflow port 21a of the artificial lung portion 20 at "45 °", the center point E, and the artificial lung portion at "90 °". The first link member 60 and the second link member 70 are equal to the discharge port 12b of the pump portion 10 so that the length of the arc D3 between the tip surface of the inflow port 21a of 20 and the center point F3 is equal to each other. The position of the artificial lung portion 20 relative to the inflow port 21a is controlled.

For example, the length between the tip surface of the discharge port 12b of the pump portion 10 in the tube 30 and the tip surface of the inflow port 21a of the artificial lung portion 20 (the length of D1 between the point E and the point F1). Set to 100 mm (posture during driving). When the center point E on the tip surface of the discharge port 12b of the pump unit 10 is set as the origin, the coordinates of F3 are (63.662, 63.662) when the posture is changed from the operating posture to the priming posture. The coordinates of F2 at "45 °" are (90.03, 37.3). In order not to change the length of D1 between the points E and F1, the length of D2 between the points E and F2, and the length of D3 between the points E and F3, the point F1 , The posture of the inflow port 21a of the artificial lung portion 20 is changed so as to draw an arc H passing through the three points F2 and F3. Further, as described above, at the point F1, the center line C is in the horizontal posture, and at the point F3, the center line C is in the vertical posture.

If two nodal points are appropriately defined at points F1, F2, and F3, the trajectory and posture can be uniquely defined. Therefore, from the above conditions, the lengths of the first link member 60 and the second link member 70, and each link are graphically defined. The nodal points (connection positions) of the members 60 and 70 can be obtained.

Further, FIG. 6 shows a case where the artificial lung portion 20 is in the driving posture, and FIGS. 1 to 4 show a case where the artificial lung portion 20 is in the priming posture. As shown in FIG. 6, when the artificial lung portion 20 is in the driving posture, the one-side connecting portion 61 of the first link member 60 is located above the one-side connecting portion 71 of the second link member 70. There is. Further, when the artificial lung portion 20 is in the operating posture, the other side connecting portion 62 of the first link member 60 is located below the other side connecting portion 72 of the second link member 70.

(Action and effect of the embodiment)
As described above, according to the artificial heart-lung machine holder 1 according to this embodiment, in the priming posture, the artificial lung portion 20 is higher than the pump portion 10, and the inflow port 21a and the outlet port 21c of the artificial lung portion 20 are raised. Since become. When switching from this priming posture to the driving posture, the switching can be easily performed by relatively rotating the pump portion fixing member 40 and the artificial lung portion fixing member 50. Then, in the driving posture, the height of the artificial lung portion 20 is lower than that in the priming posture, and the inflow port 21a and the exit port 21c of the artificial lung portion 20 are in a posture facing in the horizontal direction.

Further, the distance between the tip surface of the discharge port 12b of the pump section 10 in the tube 30 and the tip surface of the inflow port 21a of the artificial lung section 20 is equal between the priming posture and the operating posture. The relative position of the discharge port 12b and the inflow port 21a of the artificial lung portion 20 can be controlled. As a result, it is possible to suppress the occurrence of kink in the tube 30 during the priming posture while shortening the length of the tube 30 connecting the pump portion 10 and the artificial lung portion 20.

Further, while having a simple structure consisting of the first link member 60 and the second link member 70, when the artificial lung portion fixing member 50 is to be rotated with respect to the pump portion fixing member 40, the artificial lung portion fixing member The movement of 50 can be controlled accurately.

Further, the first link member 60 and the second link member 70 are arranged so as to be aligned in the thickness direction of the first connecting plate portion 41c of the pump portion fixing member 40 and the second connecting plate portion 53 of the artificial lung portion fixing member 50. Therefore, the holder 1 for the artificial heart-lung machine can be made compact.

Further, since the second connecting plate portion 53 of the artificial lung portion fixing member 50 is arranged between the other side connecting portion 62 of the first link member 60 and the other side connecting portion 72 of the second link member 70, the second connecting portion is provided. The plate portion 53 can be supported from both sides in the thickness direction of the first link member 60 and the second link member 70, and the second connecting plate portion 53 can be stabilized.

Further, since the first link member 60 and the second link member 70 are arranged so as to intersect each other when viewed along the rotation center line direction, it may be necessary to lengthen both the link members 60 and 70. However, the distance between the pump portion fixing member 40 and the artificial lung portion fixing member 50 can be shortened to make the artificial heart-lung machine holder 1 compact.

The above embodiments are merely exemplary in all respects and should not be construed in a limited way. Furthermore, all modifications and modifications that fall within the equivalent scope of the claims are within the scope of the present invention.

As described above, the holder for the heart-lung machine according to the present invention can be used by holding the heart-lung machine circuit, for example, during percutaneous cardiopulmonary support.

1 Holder for artificial heart-lung machine 10 Pump part 12b Discharge port 20 Artificial lung part 21a Inflow port 30 Tube 40 Pump part fixing member 41c First connecting plate part 50 Artificial lung part fixing member 53 Second connecting plate part 60 First link member 70 Second link member A Artificial cardiopulmonary circuit

Claims (6)

In a holder for a heart-lung machine that holds a heart-lung machine circuit including a pump part, an artificial lung part, a port of the pump part, and a flexible tube for connecting the port of the artificial lung part.
The holder for the heart-lung machine is
The pump part fixing member to which the pump part is fixed and the pump part fixing member
The artificial lung part fixing member to which the artificial lung part is fixed and the artificial lung part fixing member
By relatively rotating the pump portion fixing member and the artificial lung portion fixing member, the artificial lung portion is made higher than the pump portion, and the port of the artificial lung portion is primed in the vertical direction. It is provided with a posture and a connecting means for connecting the artificial lung portion to a position lower than that in the priming posture and to switch the port of the artificial lung portion to a driving posture in the horizontal direction.
The connecting means has the port of the pump portion and the port of the artificial lung portion so that the distance between the port of the pump portion and the port of the artificial lung portion is equal between the priming posture and the driving posture. A holder for an artificial cardiopulmonary circuit characterized by controlling the relative position of the. In the holder for a heart-lung machine according to claim 1,
The connecting means has a first link member rotatably connected to the pump portion fixing member on one side and rotatably connected to the artificial lung portion fixing member on the other side, and one side to the pump portion fixing member. A holder for an artificial heart-lung machine, which is rotatably connected and has a second link member rotatably connected to the artificial lung portion fixing member on the other side. In the holder for an artificial heart-lung machine according to claim 2.
A holder for an artificial heart-lung machine, characterized in that the extending direction of the rotation center line of the first link member coincides with the extending direction of the rotation center line of the second link member. In the holder for an artificial heart-lung machine according to claim 3.
The first link member and the second link member are connected to the pump portion fixing member, and a first connecting plate extending in a direction orthogonal to the rotation center line direction of the first link member and the second link member. The part is provided,
The first link member and the second link member are connected to the artificial lung portion fixing member, and a second connection extending in a direction orthogonal to the rotation center line direction of the first link member and the second link member. A plate is provided,
A holder for an artificial heart-lung machine, wherein the first link member and the second link member are arranged so as to be arranged in the thickness direction of the first connecting plate portion and the second connecting plate portion. In the holder for an artificial heart-lung machine according to claim 4.
A holder for an artificial heart-lung machine, wherein the second connecting plate portion of the artificial lung portion fixing member is arranged between the other side of the first link member and the other side of the second link member. .. In the holder for a heart-lung machine according to any one of claims 2 to 5.
The first link member and the second link member are artificially arranged so as to intersect each other when viewed along the rotation center line direction when the artificial lung portion is in the driving posture. Holder for cardiopulmonary circuit.

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