JPS642767Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention has a rotating body that is rotatably supported by a vertical axis on the top side of the machine frame, and a roller that revolves around the vertical axis is supported on the rotating body. and a guide block provided with an arc-shaped wall surface along the rotation trajectory on the outer periphery of the revolution rotation trajectory of the roller, and forming a tube clamp groove between the arc-shaped wall surface and the revolution rotation trajectory, The present invention relates to an improvement in a tubing pump rotor for blood bag, in which the tube clamp groove is movably disposed in the direction of expanding and contracting.

Conventional tubing pump rotors of this type for blood vessels have been of the form that utilizes ordinary roller pumps as they are.

That is, as shown in FIG. 1, a circular room 3 surrounding the rotation locus of a roller 2 that revolves while rotating around a vertical axis 1 is connected to a fixed side block 4 having an arc-shaped wall surface 41 and an arc-shaped room 3. A movable guide block 5 has a wall surface 51, and a tube clamp groove 6 is provided at the portion where both blocks 4 and 5 connect, so that the tube 7 is connected to the arc-shaped wall surface 51 of the movable guide block 5. In addition, the tube clamp groove 6 is expanded or contracted by moving the spacing adjusting screw 10 forward or backward in the guide block 5 on the movable side. The roller pump was used as it is, in which a cover 8 is fixed to a movable guide block 5 with a retaining screw 9 to hold down a tube 7.

However, with the tubing pump rotor for blood bags that uses this conventional roller pump,
Blood bag 1 containing blood as shown in Figure 4
5 Empty blood serum 16 minutes from blood bag 1
8, since the transfer of the serum 16 is completed in an extremely short time of several tens of seconds to several minutes, blood bags 15 and 18 are exchanged one after another after an extremely short period of time. The tube 7 must be attached and detached each time the tube 7 is attached and detached, and each time the tube 7 is attached or detached, the holding screw 9 must be loosened to remove the cover 8, and the spacing adjustment screw 10 must be operated to remove the guide on the movable side. Move the block 5 to widen the tube clamp groove 6, remove the tube 7, fit the new blood bag tube into the tube clamp groove 6, and turn the spacing adjustment screw 10 to narrow the tube clamp groove 6. In addition, it is necessary to adjust the pump so that the predetermined operation is performed, and to mount the cover 8 to prevent the tube from popping out, resulting in a problem that takes time and effort.

In addition, as a means to solve this problem,
As stated in Japanese Utility Model Publication No. 56-45616, clip-shaped locking parts are provided at both left and right ends of the machine frame, and both ends of the tube are locked to these. There is a known method of expanding and contracting the tube clamp groove by moving a movable guide block in conjunction with the opening and closing of the cover. Two operations are required: one to engage and disengage the cover, and the other to open and close the cover, and the problem remains that quick attachment and detachment cannot be performed.

The present invention was devised in order to solve the problems of the conventional technology, and allows the blood bag to be connected to and removed from the machine frame at both ends of the tube and the tube clamp by simply opening and closing the cover. To provide a novel tubing pump rotor for a blood bag, in which grooves can be expanded and contracted at the same time, and tubes of the blood bag can be quickly and accurately attached to and removed from the tubing pump rotor. purpose.

In the present invention, as a means to achieve this objective, a rotary body that rotates with a vertical axis is supported on a part near the front on the upper surface side of the machine frame, and the rotary body rotates with a vertical axis. A roller that revolves around an axis is supported, and an arc-shaped wall that follows the rotation trajectory is provided on the rear half side of the upper surface of the machine frame on the outer periphery of the roller's rotation trajectory. In the tubing pump rotor for blood pumping, a guide block for forming a tube clamp groove between the wall surface and the revolution locus is disposed movably in the front and rear direction so as to expand and contract the tube clamp groove. The guide block is supported by a support block which is disposed on the upper surface of the machine frame so as to be movable in the front and back direction so as to expand and contract the tube clamp groove, and at both free ends of the arc-shaped wall surface provided on the guide block. , flat wall surfaces protruding in the left-right direction are provided, and a cover covering the support block and the roller is provided above the support block and the roller, and can be opened and closed by a fulcrum shaft provided at one end of the support block and extending in a direction perpendicular to the above-mentioned direction. The tube clamp groove is mounted on a shaft on the machine frame, and the cover and the support block are connected so that the support block moves in the direction of expanding and contracting the tube clamp groove by the opening and closing operation of the cover, and A fixing block is provided on both the left and right sides, and the tube is inserted into each opposing gap between the end face and the above-mentioned flat wall. This invention proposes a tubing pump rotor for blood buckets, which has a tube drawer port installed in the machine frame.

Next, embodiments will be described in detail with reference to the drawings. In addition,
The same reference numerals in the drawings shall be used for components having the same effect as those in the prior art.

As shown in FIG. 2, the blood bag tubing pump rotor A has a rotating body 11 that rotates about a vertical axis 1 at a portion near the front (to the right in FIG. 2) on the upper surface side of the machine frame a. The rotating body 11
A roller 2 that revolves around the vertical shaft 1 is supported on the shaft.

The roller 2 is connected to a rotating body 11 as shown in FIG.
Four to five rollers are supported on the upper surface of the rollers so as to be arranged in a circle around the vertical axis 1, and each roller 2 is rotatable by being loosely fitted or driven.

The vertical shaft 1 is driven by a motor M housed in a case b installed on the lower surface of the machine frame a.

As shown in Fig. 3, the machine frame a has an outer circumference of the revolution locus of the roller 2 on the front half side of the upper surface side (right half side in Fig. 3), and a rear part along the rotation locus of the roller 2. Fixed block 4 with an arcuate wall 41 facing away
are integrally formed. At the rear end portions of both left and right sides of this fixed block 4, rearwardly facing end surfaces 42, 42 are respectively formed at intermediate portions between the front and back of the left and right sides on the upper surface side of the machine frame a. Moreover, the upper surface of the machine frame a rearward of the end surfaces 42, 42 is made to be a lower plane.

In addition, a tube clamp groove 6 is formed between the orbital locus and the arcuate wall surface 51 on the rear half side (left half side in FIG. 3) of the upper surface of the machine frame a.
A guide block 5 provided on the front side and a support block 52 supporting the guide block 5 are arranged movably in the front-rear direction (in the direction indicated by the arrow in FIG. 3) so as to expand and contract the tube clamp groove 6. be. At both left and right ends of the arc-shaped wall surface 51 provided on the guide block 5 supported by the movable support block 52, flat wall surfaces 51a, 51a projecting in the left-right direction are attached to the aforementioned fixed block 4. An end surface 4 formed at the rear end of both left and right sides of
2 and 42. Also, the left and right flat wall surfaces 51a, 51a provided on the movable guide block 5 and the end surfaces 42, 4 provided at the rear ends of both left and right sides of the fixed block 4.
2, there are formed tube outlet ports c, c, which expand and contract when the tube clamp groove 6 expands and contracts by moving the movable guide block 5 back and forth.

The tube clamp groove 6 can be expanded or contracted by fine adjustment using the gap adjustment screw 10 and by adjusting the tube 7.
The hindrance adjustment for attachment of the transparent cover 8 is performed in conjunction with the transparent cover 8.

The gap adjustment screw 10 is attached to the support block 5.
2, and passes through the support block 52, and the penetrating end thereof is connected to the guide block 5, and the rotation operation causes the guide block 5 to be moved relative to the support block 52 in the direction indicated by the arrow in FIG. direction to adjust the displacement in the expansion/contraction direction.

Further, the transparent cover 8 is pivoted to the machine frame a so as to be openable and closable by a fulcrum shaft 81 provided at one end thereof in a direction perpendicular to the expansion/contraction direction so as to cover each of the blocks 4, 5, 52 and the roller 2. It's on a shelf.

The cover 8 and the support block 52 are linked so that the support block 52 moves in the direction of expanding and contracting the tube clamp groove 6 by opening and closing the cover 8 and the support block 52. 53 is the support block 5
The connecting pin 82 protruding outward from the two side surfaces is a long connecting hole formed in the mounting bracket 84 provided on the side surface of the transparent cover 8 so that the connecting pin 53 can be inserted therethrough. The elongated hole 82 is located near the fulcrum shaft 81 and is long in the vertical direction when the cover 8 is in the closed state. Thus, the cover 8 also serves as an operating lever for expanding and contracting the tube clamp groove 6.

Note that the guide block 5 is a support block 52.
The tube clamp groove 6 is supported so as to be freely movable by a certain distance in the direction of expansion and contraction,
Push the spring in the direction of increasing the distance,
Rotate the cover 8 to close the tube clamp groove 6.
When the tube 7 is narrowed, the guide block 5
In some cases, the grooves are pressed against each other to maintain a predetermined groove spacing.

In Fig. 3, 12 is a flow rate adjustment knob, 13
1 is a power switch, and 14 is an indicator lamp.

FIG. 5 is a front view of a blood bag in which serum and blood clot are separated and disposed of by the blood bag tubing pump rotor A. In the figure, 15 is a blood bag, 16 is a blood bag, 17 is a blood clot, 18 is a blood bag for serum, and 19 is a spare joint. The blood bag 18 is connected by connecting the integrally molded tube 7 to a joint 20 provided in the blood bag 18. Then, the tube 7 is inserted into the tube clamp groove 6.
and then removed from the groove 6.

The embodiment device constructed in this manner operates as follows.

First, in order to insert the tube 7 of the blood bag 15 into the tube clamp groove 6 of the tubing pump rotor A for the blood bag, in FIG.
Rotate the transparent cover 8 counterclockwise to open it.

Due to this opening operation, the elongated hole 82 provided in the transparent cover 8 is displaced rearward (to the left in FIG. 2) about the fulcrum shaft 81, and at the same time, the elongated hole 82 is engaged with the elongated hole 82 at the time of the displacement. Pulling the connecting pin 53 rearward, the support block 52 and the guide block 5 are moved back from the rotation locus of the rollers 2..., the tube clamp groove 6 is widened, and at the same time,
Left and right end wall surfaces 51a, 5 of the guide block 5
1a and the end surfaces 42, 42 at both ends of the fixed block 4
Left and right tube outlet c, c formed between
Expand each. Therefore, the tube 7 of the blood bag 15 is inserted into the tube clamp groove 6, and the tube 7 of the blood bag 15 is inserted into the arcuate wall surface 5 of the guide block 5.
1, both ends are pulled out of the machine frame a from the tube outlet c, c, and the state shown by the chain line in FIG. 3 is achieved. Next, from this state, the transparent cover 8 is rotated clockwise to close it. Due to this closing operation, a linking action that is opposite to the linking action during the opening action described above is performed, and the support block 5
2 and the guide block 5 move forward to return the tube clamp groove 6 to the old spacing width, and the tube 7 is moved between the arc-shaped wall surface 51 and the roller 2 provided on the rotating body 11.
. . . and at the same time narrow the tube outlet ports c and c and draw out both ends of the tube 7 from the flat plate shape provided at both left and right ends of the guide block 5. It is placed between the wall surfaces 51a, 51a and the end surfaces 42, 42 provided at the rear ends of both left and right ends of the fixed block 4.

When the power switch 13 is turned on in this state, the rotating body 11 rotates, and if the roller 2 that is supported on the rotating body 11 is loosely supported on the rotating body 11, the roller 2 is rotated in the vertical direction. While revolving around the axis 1, it contacts the tube 7 and rotates, pushing out the serum 16 in the tube 7 from the blood bag 15 side to the serum bag 18 side, and the roller 2 is driven. vertical axis 1 when
The pump operating gas pumps out the serum 16 by rotating around the drive shaft and pushing out the serum 16 in the tube 7 from the blood bag 15 side to the serum bag 18 side as described above. It is done.

If this operation is incomplete, set the clearance adjustment screw 10 so that the roller 2 is in good contact with the tube 7.
Rotate to squeeze the guide block 5.

When the delivery of the serum 16 is finished and the tube 7 is removed, the closed transparent cover 8 is rotated counterclockwise in FIG. 2 to open it.

As a result, the support block 52 and the guide block 5 move back in conjunction with the opening operation as described above, greatly expanding the tube clamp groove 6, and at the same time, the flat wall surfaces 51a at both ends of the guide block 5 are moved back. , 51a move back and widen the pinched tube outlet ports c, c. This allows tube 7 to be removed from there without any resistance.

As described above, the tubing pump rotor for blood buckets according to the present invention has a rotary body 11 that is rotatably supported by a vertical axis 1 at a portion near the front on the upper surface side of the machine frame a. 11, a roller 2 that revolves around the vertical axis 1...
is pivotally supported, and an arc-shaped wall surface 51 along the rotation trajectory is provided on the front side on the rear half side of the upper surface of the machine frame a on the outer periphery of the orbital trajectory of the roller 2... In the tubing pump rotor for blood bag, a guide block 5 for forming a tube clamp groove 6 between the rotor and the orbital rotation locus is arranged movably in the front and rear direction so as to expand and contract the tube clamp groove 6. Guide block 5
the tube clamp groove 6 on the upper surface side of the machine frame a.
The guide block 5 is supported by a support block 52 which is movable in the front and rear directions so as to expand and contract the guide block 5. At both free ends of the arc-shaped wall surface 51 provided on the guide block 5, there are flat wall surfaces 51 projecting in the left-right direction.
a, 51a are respectively provided, and their supporting blocks 5
2 and the rollers 2..., a cover 8 covering them is mounted on the machine frame a so as to be openable and closable by means of a fulcrum shaft 81 provided at one end of the cover in a direction orthogonal to the above-mentioned direction. 8 and the support block 52, the support block 52 is moved into the tube clamp groove 6 by the opening/closing operation of the guide block 8.
A fixing block 4 is provided on both left and right sides of the front half of the upper surface of the machine frame a, and has end surfaces 42, 42 facing the flat wall surfaces 51a, 51a. , the end surfaces 42, 42 thereof and the flat wall surfaces 51a, 51a.
Since the machine frame a is configured with tube outlet ports c and c for pulling out the tube 7 outward from the machine frame a, in each opposing gap between the machine frame a and the movable guide on the top side of the machine frame a. Block 5 and fixed block 4
When the cover 8 that covers the roller is opened, the tube clamp groove 6 and the tube outlet openings c and c that sandwich both ends of the tube 7 simultaneously expand, and when the cover 8 is closed, the tube clamp groove 6 and the tube Since the outlet ports c and c are contracted at the same time, the tube 7 can be easily installed and removed from the tube clamp groove 6 and the tube outlet ports c and c at the same time.
By opening and closing the cover 8, both ends of the tube 7 are clamped and released, so that the tube can be quickly and accurately attached to and detached from the tubing rotor.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional tubing pump rotor for blood bags, Fig. 2 is a longitudinal sectional view of a tubing pump rotor for blood bags of the present invention, and Fig. 3 is a rotor of a blood tubing pump of the present invention. FIG. 4 is a perspective view of the same cover, and FIG. 5 is a front view of the blood bag in which serum and blood clots to be separated and disposed of are separated. Explanation of drawing symbols, A...Tubing pump rotor for blood bag, a...Machine frame, b...Case, 1...Vertical axis, 2...Roller, 3...
Room, 4... Fixed block, 41... Arc-shaped wall surface, 5... Guide block, 51... Arc-shaped wall surface, 52... Support block, 53... Connecting pin,
6...Tube clamp groove, 7...Tube, 8
... Cover, 81 ... Fulcrum shaft, 82 ... Long hole, 9
... Holding screw, 10 ... Gap adjustment screw, 11 ...
Rotating body, 12...Flow rate adjustment knob, 13...Power switch, 14...Indication lamp, 15...Blood bag, 16...Serum, 17...Blood clot, 18...Serum bag.

Claims (1)

[Scope of utility model registration request] A rotary body 11 that rotates around a vertical shaft 1 is pivotally supported at a portion of the upper surface of the machine frame a that is closer to the front, and a roller 2 that revolves around the vertical shaft 1 is supported on the rotary body 11. … is supported pivotally, and its roller 2…
On the outer periphery of the orbital locus of the machine frame a,
A guide block 5 is provided with an arc-shaped wall surface 51 along the rotation locus on the front side, and a tube clamp groove 6 is formed between the arc-shaped wall surface 51 and the revolution rotation locus. In a tubing pump rotor for a blood bag, which is arranged to be movable in the front-rear direction so as to expand and contract, the guide block 5 is movable in the front-rear direction so as to expand and contract the tube clamp groove 6 on the upper surface side of the machine frame a. The guide block 5 is supported by a support block 52 provided thereon, and plate-shaped wall surfaces 51a, 51a protruding in the left-right direction are provided at both free ends of an arc-shaped wall surface 51 provided on the guide block 5, respectively. and the rollers 2..., a cover 8 covering them is mounted on the machine frame a so as to be openable and closable by means of a fulcrum shaft 81 provided at one end of the cover in a direction perpendicular to the above-mentioned direction. and the support block 52 are connected so that the support block 52 moves in the direction of expanding and contracting the tube clamp groove 6 by the opening and closing operation of the cover 8. are the end surfaces 42, 4 facing the flat wall surfaces 51a, 51a.
2 is provided, and the end surfaces 42, 42 thereof and the aforementioned flat wall surfaces 51a, 5 are provided.
A tubing pump rotor for blood buckets, in which a machine frame a is provided with tube outlet ports c, c for drawing out the tube 7 to the outside of the machine frame a, in each opposing gap with the machine frame a.