JPS6240601Y2 - - Google Patents

Description

[Detailed Description of the Invention] Background Technical Field of the Invention The present invention relates to a laminated body fluid filter of a laminated body fluid filter equipped with a laminated filter that separates blood taken out of the body into formed components and non-formed components. The present invention relates to a support device for a laminated body fluid filter that is compressed from the outside to change the filtration efficiency of the filter.

Prior art and its problems As shown in Fig. 1, the laminated body fluid filter A is
It comprises a laminated filter 1, a plunger 2 for compressing the laminated filter, and a container 3 for housing them.

The container 3 has a cylindrical shape with a closed bottom,
A restraining ring 4 screwed onto the opening side of the container restrains the plunger 2.

The tank layer filter 1 is constructed by stacking a plurality of membrane units 1a that form a sealed space with a donut-shaped planar expanse, and connecting these sealed spaces into a single sealed space. 5,5...
is considered to be the filtrate passage.

Further, a slight gap 6 is provided between each membrane unit 1a, and each gap 6, 6, . . . and the center hole of each membrane unit 1a are used as body fluid passages.

The plunger 2 has an O
A ring 7 is fitted to form a sealed space around the laminated filter 1 within the container 3, and the sealed space is also a part of the body fluid passageway 6.

The container 3 is provided with a body fluid inlet 8 and a body fluid outlet 9 communicating with the body fluid passage 6, and a filtrate outlet 1 communicating with the filtrate passage 5.

This type of laminated body fluid filter was developed in Japanese Patent Application Laid-open No. 1983-
68458.

In this filter, when blood is allowed to flow in through the body fluid inlet 8, non-formable components in the blood flow through the holes in the filter 1 and flow into the filtrate passage 5, where they are filtered. flows out from the body fluid outlet 9.

On the other hand, the filtrate of non-forming components in the blood that has passed through the holes in the filter is configured to flow out from the filtrate outlet 10, and is filtered through the laminated filter 1 by pressing the plunger 2 from outside the filter through the container opening. By compressing the body fluid passages 6, 6... and the filtrate passages 5, 5..., the thickness can be freely changed.

Therefore, the laminated body fluid filter has the feature that the filtration efficiency can be variably adjusted by compressing the filter.

Therefore, the laminated body fluid filter requires a device that holds the container 3 and compresses the laminated filter 1 by pressing the plunger 2 through the opening of the container.

Therefore, at the beginning of using the filter, a doctor or nurse should clean the body fluid passages 6, 6...
Hold the laminated body fluid filter in your hand with the body fluid outlet 9 facing up until the air inside the filter is removed, and after the air is removed, hold the laminated body fluid filter with the body fluid outlet 9 directly below However, since it is connected to the patient and other devices through multiple tubes, it is troublesome to put it on.

Purpose of the invention The present invention was devised in view of the above-mentioned points, and includes a stacked body fluid filter, together with a holder that holds the filter, so that the body fluid outlet of the filter is either from the top to the bottom or from the bottom to the top. To provide a support device for a laminated body fluid filter, which can be rotated as shown in FIG. It is.

According to the present invention, this purpose is achieved by: a base, a pusher provided to project from the base and movable in the projecting direction, and a pusher provided at the projecting end of the pusher to be rotatable about the pusher shaft. a pressing plate that presses the laminated body fluid filter; a holder that is rotatably attached to the base coaxially with the pusher and holds the filter; and a holder that rotates the holder in a predetermined manner with respect to the base. The holder lock mechanism includes a latching recess or a latching protrusion provided on the base at a position facing the holder, and a latching recess or a latching protrusion attached to the holder. A latching protrusion or a latching recess whose one end engages with the latching protrusion, an elastic body urging the latching protrusion to engage with the latching recess, and an elastic body perpendicular to the rotation axis of the holder. A laminated body fluid filter comprising a lock release lever whose middle part is pivoted so as to be able to be raised and raised to a desired position on the outer surface in the radial direction, and whose one end is linked to the locking protrusion. This is achieved by means of a support device.

In addition, in this invention, in order to lock the rotation every time the laminated body fluid filter is rotated by 180 degrees while it is attached, the lock release lever is installed at two locations on the outer surface of the holder in the radial direction with rotation angles shifted by 180 degrees. A support device for a laminated body fluid filter.

And, the holder of the latching recess and the latching protrusion is 180 mm.
The present invention provides a support device for a laminated body fluid filter that is provided at two positions corresponding to two rotated positions.

Specific description of the invention As shown in FIGS. 2 to 5, the support device for a laminated body fluid filter according to this invention is such that a pusher 12 is provided on an appropriately shaped base 11 so as to be movable in the axial direction. A pressure plate 13 is provided at the tip of the pusher 12 so as to be rotatable about the pusher shaft, and the plunger 2 of the laminated body fluid filter A shown in FIG. 1 is applied to the pressure plate 13. A frame-shaped holder 14 capable of accommodating A is attached to the base 11 so as to rotate coaxially with the press plate 13, and a holder lock mechanism is installed so that the holder 14 can be fixed at a predetermined rotational position with respect to the base 11. Some have 15.

Therefore, the supporting device for the laminated body fluid filter is characterized in that the press plate 13 not only moves integrally with the pusher 12 in the direction of the pusher axis, but also can freely rotate about the pusher axis, and the holder 14 moves along the pusher axis. The holder 14 is characterized in that it can be rotated coaxially with the pressing plate 13 without being moved in any direction, and that the holder lock mechanism 15 can fix the holder 14 at a predetermined rotational position with respect to the base 11.

In detail below, the base 11 may be made of any suitable material and shape;
For example, it is made of cast iron and has an appropriate column shape.

The pusher 12 is mounted so as to protrude from the base 11, and is movable in the axial direction of the plunger 2 of the laminated body fluid filter A shown in FIG. 1, which is held by a holder 14.

In the illustrated example, the pusher 12 is supported by the base 11 and a bearing block 16 attached to the base 11 so that the horizontal direction becomes the axial direction, and the pusher 12 is supported by the rotary knob 17.
It is made movable so as to be able to generate a large thrust in the axial direction via a linear movement mechanism B mounted on the base 11 by rotating the .

The linear motion mechanism B may have any suitable structure, but in the illustrated example, a worm 19 is engaged with a worm screw 18 coupled to a rotary knob 17.
A female thread provided on the worm 19 is screwed together,
Furthermore, a bearing block 16 is installed to prevent the pusher 12 from being rotated by the sliding key or spline 20.
(substantially on the base 11), and by rotating the rotation knob 17, the worm screw 18 and the worm 19 are engaged and rotated, and the worm 19 is further engaged and rotated with the pusher 12, and the pusher is pushed. Since the pusher 12 is made non-rotatable, the pusher 12 is freely movable in the axial direction.

Note that the bearing block 16 substantially constitutes the base 11. Further, the amount of rotation of the rotary knob 17 is indicated by an indicator 21.

Next, the press plate 13 is provided at the projecting end of the pusher 12 so as to be rotatable about the pusher shaft, and is configured to move in the axial direction together with the pusher 12.
It is sufficient that the plunger 2 of the laminated body fluid filter A shown in the figure is pressed.

In the illustrated example, the press plate 13 includes a disk portion 131
and a skirt portion 132 that covers the outer periphery of the flange portion 161 of the bearing block 16. Fitted and fixed.

Next, the holder 14 is attached to the base 11 so as to be rotatable coaxially with the pusher 12, has a shape that surrounds the press plate 13, and has a filter shown in FIG. It has a frame shape consisting of a frame part 141 having an opening for accommodating the filter A, and a door part 142 that closes the opening of the frame part 141. It is designed to be firmly held so as to face 13.

In the illustrated example, the holder 14 includes: a frame portion 141 consisting of a front portion 141a and a pair of side portions 141b, 141b; a door portion 142 consisting of a pressing portion 142a and an arm portion 142b; is the frame part 141
It is supported by a fixing means 23 so as to be openable and closable.

The front part 141a is rotatably fitted onto the outer circumferential surface of the bearing block 16, and is sandwiched between the base 11 and the collar part 161 of the bearing block 16, and the pair of side parts 141b, 141b are The press plate 1 is parallel to the pusher shaft from both ends of the portion 141a.
3, and forms a U-shape with the front part 141a, and further includes receiving protrusions 143, 143 for receiving the filter A from below.

The arm portion 142b is integrally formed with the pressing portion 142a, and has a pair of side portions 141b and 141 at both ends.
b, one end is engaged with one end of one side surface portion 141b by a pin shaft 144, and the other end is pivotable, and the pressing portion 142a and arm portion 142 are connected from the other end.
By fitting the fixing means 23 into the slit 145 provided in the middle of b, the door part 142
is locked to the front part 141a in a closed state.

The fixing means 23 has one end 231 which is rotatably engaged with the side surface portion 141b by a pin 24, and has a hook portion 232 at the other end which is fitted into a slit 145 formed in the door portion 142 and abuts against the side surface of the opening side of the other end from the outside while engaging in the closed door state. It is preferable that the fixing means 23 has, for example, a door lock mechanism 25 which maintains the engagement of the other end of the arm portion 142b with the side surface portion 141b.

The door lock mechanism 25 is connected to the hooking portion 2 of the fixing means 23.
32 is covered with a handle portion 251, and a locking pin 252 provided from the handle portion 251 is adapted to engage with a locking recess 254 formed in the arm portion 142b by the urging of an elastic body 253.

Next, the holder lock mechanism 15 will be explained.

The holder lock mechanism 15 has a latching recess 151.
, a locking protrusion 152a, an elastic body 153, and a lock release lever 154.

The latching recess 151 is provided on the outer peripheral surface of the bearing block 16 (substantially on the holder 11 of the base 11).
) and a pin body 152 having a locking protrusion 152a.
, the elastic body 153 and the lock release lever 154
is provided in the holder 11, a pin body 152 is linked to the lock release lever 154, and a latch protrusion 152a provided at one end of the pin body 152 is inserted into the latch recess 151 by an elastic body 153 at a required rotational position of the holder 14. are biased into engagement.

The elastic body 153 may be an appropriate elastic member such as a spring.

The lock release lever 154 may be provided at a desired position in the radial direction orthogonal to the rotation axis of the holder 14. In the illustrated example, one end and the other end of the lock release lever 154, which are provided at a position near the base 11 on the outer surface of the side surface 141b and linked to the pin body 152, are elevated in a direction perpendicular to the pusher axis. The middle part is supported by a pin shaft 155 so that this is possible.

Since the pin body 152, the elastic body 153, and the lock release lever 154 are provided at two locations on the outer surface of the holder 14 in the radial direction with rotation angles shifted by 180 degrees, the holder 14 can be rotated by 180 degrees to release the holder. The pair of side parts 141b of 14 are the pusher 1
When the holder 14 is in a horizontal position with respect to the base 11, the holder 14 can be automatically locked with respect to the base 11.

In addition, in order to guarantee the rotation of the press plate 13 and the holder 14, a thrust bearing 26 is provided between the bearing block 16 and the holder 14, and a thrust bearing 27 is installed between the bearing flange 22 and the press plate 13. ing.

Specific Effects of the Invention First, in a state where either one of the locking protrusions 152a of the holder locking mechanism 15 is engaged with the locking recess 151 and the holder 14 is locked with respect to the base 11, the door portion of the holder 14 is locked. 142 horizontally to open it and open the body fluid outlet 9 of the filter A in Fig. 1.
With the filter A facing upward and the plunger 2 facing the pressing plate 13, insert the filter A into the holder 1 through the opening.
After that, the door 142 is closed, the fixing means 23 is fitted into the slit 145 of the door 152, and the door locking mechanism 25 provided in the fixing means 23 locks the door 142 in the closed state. .

In this state, blood to be processed is caused to flow into the filter 1 from the body fluid inlet 8 of the filter A.

Then, since the body fluid outlet 9 faces upward, the air in the filter 1 is pushed out by the blood to be treated and is discharged from the body fluid outlet 9.

When the processed blood (formed components such as blood cells) begins to flow out from the body fluid outlet 9 and the air is completely discharged from the filter 1, the lock release lever 154 of the frame 141 of the holder 14 is released. Grasp the proximal portion provided, and press one end of the lock release lever 154 with your finger to release the locking protrusion 15 at one end of the pin body 152 against the bias of the elastic body 153.
2a is released from the latching recess 151.

When the holder 14 is rotated 180 degrees until the body fluid outlet 9 of the filter A held by the holder 14 is turned from the upward position to the downward position, the hand holding the holder 14 can be moved from the original position. Although the holder locking mechanism 15 is separated from the vicinity of the locking recess 151, the pin body 152 having the locking protrusion 152a, the elastic body 153, and the lock release lever 154 are arranged so that the rotation angle of the outer surface in the radial direction of the holder 14 is 180 degrees. Since the levers are provided at two different positions, the other locking protrusion 152a can be pushed into the locking recess by the urging force of the elastic body 153, without having to operate the other lock release lever 154 that has been located far away from the locking recess 151. 151 and automatically protrudes and engages with the holder 1.
4 is automatically locked at a predetermined rotational position (180 degrees in this embodiment) with respect to the base 11.

By doing so, the air in the filter, which must be removed at the beginning of use of the filter A, can be carried out while the filter A is held in the holder 11.

Subsequently, if the rotary knob 17 is rotated until the indicator 21 reaches a desired value while allowing the blood to be processed to flow into the filter 1 from the body fluid inlet 8, the rotation is transferred to the pusher 12 via the linear movement mechanism B. , and the pusher 12 is moved in the direction of the plunger 2, so the pusher plate 13 presses the plunger 2, compressing the laminated filter 1 to achieve the desired filter efficiency, and the filtration is directed downward. A predetermined amount of tangible components such as blood cells can be obtained from the body fluid outlet 9 of the vessel A.

Next, a modification of the holder lock mechanism will be explained.

The latching recesses may be provided at two positions corresponding to two positions where the holder of the latching protrusion rotates 180 degrees, and the holder may be locked to the base each time the holder rotates 180 degrees.

As shown in Fig. 6a and b, the bearing block 1
A latching protrusion 152a that protrudes toward and engages with a rod accommodating hole 156 provided in the holder 14 by an elastic body 153 is housed in the interior facing the sliding surface of the holder 14 of the holder 14. A rod accommodating hole 156 is formed in the interior facing the locking protrusion 152a, and the latching protrusion 152a is inserted into the rod accommodating hole 156.
Further, a rod 157 linked to a lock release lever 154 is passed through the locking protrusion 152a, and the lock release lever 154 is biased by an elastic body 158 provided on the inner surface of the protrusion prevention piece 154a.
engages with the inner surface of the holder 14 and the finger contact surface 154
b is configured to align with the outer surface of the side surface portion 141b, and the lock release lever 154 is moved from the state shown in FIG. 6a.
Press to return to the state shown in Figure 6b, that is, rod 1.
57, push in the latch protrusion 152a, and lock the bearing block 16 and holder 1 by the latch protrusion 152a.
It may also be in a state where the lock with 4 is released.

Specific Effects of the Invention As explained above, the supporting device for the laminated body fluid filter of the present invention includes a pusher that is movable in the axial direction on an appropriately shaped base, and a pusher that is pushed onto the tip of the pusher. A press plate is provided to be rotatable about the child shaft, a holder for holding the filter is attached to the base so that it rotates coaxially with the press plate, and the holder is fixed at a predetermined rotational position relative to the base. The lock release lever of the holder locking mechanism is provided at a predetermined position on the outer surface of the holder in the radial direction perpendicular to the rotation axis of the holder.

Therefore, in the support device for the laminated body fluid filter of the present invention, the holder can rotate together with the pressing plate, so that the body fluid outlet can be opened from above while holding the laminated body fluid filter with the tube connected to the holder. The lock release lever of the locking mechanism that can be rotated from the bottom or from the bottom to the top, and that can fix the holder in a predetermined rotational position with respect to the base, can be moved by the hand on the outer surface in the radial direction perpendicular to the axis of rotation of the holder. The holder is designed so that it can be unlocked by pressing it with your finger at a desired position where it can be easily hung.To lock the holder against the base, simply rotate the holder and the latching recess will align with the latching recess. Since the locking is performed automatically, the operation is extremely simple and reliable.

Further, as an embodiment of the present invention, the lock release lever has a rotation angle of the outer surface in the radial direction of the holder.
In addition to the above effects, if the holder is located at two locations 180 degrees apart, or if the latching recesses are provided at two locations corresponding to the two positions where the holder of the latching protrusion is rotated 180 degrees, It can be fixed to the base every time it rotates 180 degrees. Therefore, the laminated body fluid filter can be attached to the support device of the present invention in advance, and after removing air, the body fluid in the filter can be fixed. Since the holder can be fixed so that the outlet is directly below the holder, there is no need for the holder to hold a laminated body fluid filter to which a plurality of tubes are connected, and this has the effect of improving usability.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing an example of a laminated body fluid filter. FIGS. 2, 3, 4, and 5 are views of the use state of the embodiment of the support device for the multilayer body fluid filter of the present invention, in which FIG. 2 is a plan view;
Figure 3 is a side view, Figure 4 is "" in Figure 3.
An enlarged sectional view of the portion, and FIG. 5 is a front view. 6th
Figures a and b are views of a modification of the main parts of the support device for the multilayer body fluid filter of the present invention. A... Laminated body fluid filter, 1... Laminated filter, 2... Plunger, 3... Container, 11...
Base, 12... Pusher, 13... Pusher shaft, 14...
Holder, 15...Holder lock mechanism, 151
...Latching recess, 152a...Latching protrusion, 153...
...Elastic body, 154...Lock release lever.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A base, a pusher provided to project from the base and movable in the projecting direction, and a pusher provided at the projecting end of the pusher to be rotatable about the pusher shaft. a pressing plate that presses the laminated body fluid filter; a holder that is rotatably attached to the base coaxially with the pusher and holds the filter; and a holder that holds the filter at a predetermined position relative to the base. The holder lock mechanism includes a latching recess or a latching protrusion provided on the base at a position facing the holder, and a latching recess or a latching protrusion attached to the holder. or a latching protrusion or a latching recess whose one end engages with the latching protrusion, an elastic body that urges the latching protrusion to engage with the latching recess, and a member perpendicular to the rotation axis of the holder. A laminated body fluid filter comprising a lock release lever which is pivotably supported in the middle so as to be able to be lifted up and down at a desired position on the outer surface in the radial direction, and one end of which is linked to the locking projection. support device. 2. The support device for a laminated body fluid filter according to claim 1, wherein the lock release levers are located at two locations whose rotation angles on the outer surface of the holder in the radial direction are shifted by 180 degrees. 3. The support device for a laminated body fluid filter according to claim 1, wherein the latching recesses are provided at two positions corresponding to two positions where the holder of the latching protrusion is rotated by 180 degrees.