JPS6343596B2 - - Google Patents

Description

[Detailed Description of the Invention]: Background of the Invention [Technical Field] The present invention is directed to a roller pump in which a liquid feeding tube forming an extracorporeal circulation circuit is locked in a fixed position, and the liquid feeding tube is wound into a rotor. Or, it relates to a tube clamp for roller pumps to prevent separation from the pump.

[Prior art and its problems] Since the liquid feeding tube attached to the roller pump is subjected to tension in the direction of rotation of the roller arm, it may become caught in the roller or the tube may come off from the pump head. .

Therefore, various ideas have been devised regarding clamps that lock the liquid feeding tube, but to explain this using a tube clamp for a roller pump used in the medical field as an example, the part of the clamp body that fits the tube is attached to the tube. When replacing the clamp body depending on the diameter, the clamp body is fixed by a spring or the like, or the lever shaft is rotated by a lever, in this case a horizontal slide type with a link mechanism. The mechanism is such that the clamp is moved left and right via a link, so the clamp body cannot be released with a simple one-touch operation, and it takes time when clamping or releasing the clamp. Moreover, since the clamp body cannot be separated, it is difficult to operate when clamping.

OBJECT OF THE INVENTION The object of the present invention was to eliminate such conventional drawbacks, and the purpose of the present invention is to enable the clamp to be divided into a clamp fixed part and a clamp movable part with one touch, and the operation thereof can be performed simply by one touch of a lever. The present invention provides a tube clamp for a roller pump that allows this to be done with only a single tool.

What achieves the above object is a tube holding part that is divided into a tube holding fixed part and a tube holding movable part that can hold the tube on the outer circumference of the tube, and a rotating part provided in the tube holding movable part. A locking end of the shaft and tube holding movable part;
tube holding movable part rotating means for applying a force to rotate the tube holding movable part in a direction in which the tube holding fixed part and the tube holding movable part are separated; The tube holding movable part engages with the locking end of the tube holding movable part to prevent rotation of the tube holding movable part, and when releasing the tube holding, the tube holding movable part disengages from the locking end of the tube holding movable part. This tube clamp for a roller pump has a stopper means that rotates the tube to separate a tube holding movable part and a tube holding fixed part.

There are two sets of the tube holding part, the rotating shaft, the tube holding movable part rotating means, and the stopper means, and the two sets of stopper means are interlocked when releasing the holding of the tube. It is preferable that the tube holding movable part and the tube holding fixed part of the holding part be separated at the same time. Further, the stopper means is a longitudinal member rotatably supported in the middle, and the longitudinal member is engaged with a locking end of the tube holding movable portion at one end surface thereof, and a stopper means rotating means for applying a force to rotate the longitudinal member in a direction in which the locking surface portion and the locking end of the tube holding movable portion engage with each other. It is preferable that the

DESCRIPTION OF THE PREFERRED EMBODIMENTS: Detailed Description of the Invention Hereinafter, a tube clamp for a roller pump according to the present invention will be described using embodiments shown in the drawings.

The tube clamp for roller pumps of the present invention is
A tube holding fixed part and a tube holding movable part 9 that can hold the tube on the outer circumference of the tube.
In the direction in which the tube holding part is divided into the rotating shaft 10 and the tube holding movable part locking end 12 provided on the tube holding movable part 9, and the tube holding fixed part and the tube holding movable part 9 are divided. A tube holding movable part rotating means 7 that applies a force to rotate the tube holding movable part 9, and a tube holding movable part 9 that engages with the tube holding movable part locking end 12 when the tube is held by the tube holding part. At the same time, when releasing the tube holding, the tube holding movable part 9 is rotated by disengaging the tube holding movable part locking end 12 and separating the tube holding movable part 9 and the tube holding fixed part. It has a stopper means 5 for causing the movement.

FIG. 1 shows a main part sectional view of the front when the tube holding part of a tube clamp for a roller pump according to an embodiment of the present invention is in a state of holding the tube, and FIG. FIG. 2 is a front sectional view showing a main part of the tube holding portion of the tube clamp for a roller pump shown in FIG. 1 in a divided state;

A tube clamp for a roller pump according to an embodiment of the present invention has a lever shaft 1 in the center.
A lever mounting plate 2 is integrally attached to the rear of the lever shaft 1 so as to rotate together with the lever shaft 1. Links 3 are provided on the left and right sides (near both ends) of the lever mounting plate 2, and the links 3 each rotate as the lever mounting plate 2 rotates.
The lever mounting plate 2 and the link 3 are interlocked by sliding in a connecting groove 4 provided in the mounting portion of the link 3 so as to be pulled into the center of each. When the link 3 moves toward the center, the stopper means 5 connected with springs, which are the means for rotating the tube holding movable parts on both sides of the link 3, also rotate their respective stopper means rotation shafts 6. As a center, this is also linked to the center. Then, the tube holding movable part locking end 12 is pulled by a spring 7 which is a means for rotating the tube holding movable part.
As shown in FIG. The tube holding movable part 9 rotates about 10.

Then, as shown in FIG. 2, the stopper means 5
As shown in FIG. 1, the locking surface portion 11 provided at the end of the tube comes into contact with the lower portion of the locking end 12 provided on each adjacent tube holding movable portion 9, and engages. I'm starting to do that. FIG. 1 shows a state in which the locking surface portion 11 provided at the end of the stopper means 5 and the locking end 12 provided on the tube holding movable portion 9 are engaged. And the locking end 1
A tube holding movable part 9, which is the upper half of the tube holding part, is formed above the tube holding part 2. Below this tube holding movable part 9, a tube holding fixed part formed of a part of the case body is formed. It is provided. The tube is sandwiched between the tube holding surfaces of the tube holding movable part 9 and the tube holding fixed part, and the tube is clamped.

Further, a spring locking protrusion 8 is provided below each tube holding movable part 9, and locks one end of a spring 7 which is a rotating means of the tube holding movable part 9. The other end of 7 is fixed by a spring stopper.

A spring 13 forming a stopper means rotating means is provided below each stopper means 5, and the locking surface portion 11 of the stopper means 5 and the movable portion locking end 12 of the tube holding movable portion 9 are provided. It is configured to rotate the longitudinal member of the stopper means 5 in the direction of engagement.

: Effect of the Invention As shown in FIG. 2, the tube clamp for a roller pump having the above-mentioned configuration has tube holding movable parts 9 on the left and right upper parts diagonally upward due to the contraction force of the spring 7 of the rotation means. By this rotation, the tube holding movable part 9 rotates upward about the rotation axis 10. This is because if the central lever shaft 1 is simply rotated as shown in Fig. 4, the lever mounting plate 2 attached integrally thereto will also rotate in the same direction at the same time as the lever shaft 1. By rotation, the stopper means 5 normally engages the tube holding movable part locking end 12 and the locking surface portion 11 at its tip by the force of the spring 13 provided thereon.
By operating the lever in the direction of the arrow shown in FIG. 4, the stopper means 5 moves as shown in FIG. 2.
This is because the force generated by the rotation of the lever overcomes the force of the spring 13, so that the spring 1 normally acts as described above.
3, the movable part locking end 12 is brought into contact with the locking surface portion 11 of the stopper means 5, and the state in which it is located in the direction of engagement is released. On the other hand, normally, the locking surface portion 11 formed at the tip of the stopper means 5 is connected to the tube holding movable portion 9 as described above.
It engages with the locking end 12 of the tube and serves as a stopper, and prevents the tube holding movable part 9 from rotating diagonally upward.

In this way, by one-touch operation of the lever,
When the tube holding movable part 9 is disengaged from the stopper means 5, the tube holding fixed part and the tube holding movable part are separated by the contraction force of the spring 7 supported by the locking protrusion 8 provided below. The tube is rotated in the separating direction (diagonally upward in the figure), and as a result, the tube holding fixed part and the tube holding movable part are separated.

Then, as shown in FIG. 2, when the tube holding fixed part and the tube holding movable part 9 are separated and the lever rotation operation is completed, the stopper means 5 is moved back to its original position by the force of the spring 13. state (state where the tube holding movable part locking end 12 can be engaged)
to return to. However, the tube holding movable part 9
The locking end 12 provided on the tube holding movable portion 9 remains in a released state around the rotation shaft 10, and the locking end 12 provided on the tube holding movable portion 9 is connected to the locking surface portion 1 provided on the stopper means 5.
1, the tube holding movable part 9 and the tube holding fixed part maintain a divided state. And the tube holding movable part 9
After positioning the tube that forms an extracorporeal circulation circuit between the tube holding and fixing part, by pushing the tube holding movable part 9 on one side (the right or left side in FIG. 2) downward by hand, A locking end 12 provided on the tube holding movable portion 9 engages with a locking surface portion 11 provided on the stopper means 5. When the two engage, the stopper means 5 also moves somewhat, and this movement is also transmitted to the link 3 attached to the stopper means 5, and the link 3 also moves somewhat, but the lever attached to the lever shaft 1 Since the mounting plate 2 and the link 3 are attached via the elongated connecting groove 4, the movement of the link 3 is a movement within the connecting groove 4 and is not transmitted to the lever mounting plate 2. Therefore, the link 3, which is similarly attached to the lever mounting plate 2 and the other end of the lever mounting plate 2 via the connecting groove 4, does not move and engages one tube holding movable part and the tube holding fixed part. The state can be set to the same state. Similarly, one tube holding movable part 9
When the tube holding and fixing part are engaged and the tube is being held, the locking end 12 provided on the tube holding movable part 9 can be locked by pushing the other tube holding movable part 9 downward by hand. , engages with a locking surface portion 11 provided on the stopper means 5. When the two engage, the stopper means 5
The link 3 attached to the stopper means 5 also moves and moves somewhat, but
The lever mounting plate 2 attached to the lever shaft 1 and the link 3 are attached through the long hole connecting groove 4, so the movement of the link 3 is the movement inside the connecting groove 4, and the lever mounting plate 2 not transmitted. Therefore, since no movement is applied to the one stopper means 5 that is already in the engaged state, the engagement state (tube holding state) of one tube holding part is not affected in any way, and the other stopper means 5 is not moved. The tube holding section can be placed in a tube holding state.

In this way, the left and right tube holding movable parts are drawn together by the contractile force of the spring and separated from the tube holding fixed part, making it very easy to operate, as shown in Figure 4. The process up to this point involves simply rotating the lever, and the upward rotation of the movable part is simultaneously performed, and can be operated in a short time. Furthermore, separating the case body, which is the lower fixed part, from the clamp, which is the movable part, can be done with a one-touch operation that requires only the operation of a lever.Moreover, this can simultaneously release the engagement between the left and right stoppers and the movable part locking ends. At the same time, the tube can also be clamped by pushing the tube holding movable parts downward one by one.

The tube holding movable part, which is separated upward by one-touch operation of the lever in this way, is engaged once the tube holding movable part is pushed downward after the clamping is completed, in the opposite of the series of operations described above. The toe 12 and the locking surface portion 11 of the stopper means 5 are engaged, and the engaged tube holding movable portion 9 is moved by the spring 1 attached to the stopper means 5.
The engagement is fixed by the contraction force 3, and rotation of the tube holding movable part 9 is prevented.

Therefore, by having the above configuration, it is preferable that the left and right tube holding parts can be operated separately and independently by simply pushing the tube holding movable part 9.

:Effects of the invention The tube clamp for roller pumps of the present invention has the following features:
A tube holding part that is divided into a tube holding fixed part and a tube holding movable part capable of holding the tube on the outer circumference of the tube, and a rotating shaft provided in the tube holding movable part and a locking tube holding movable part. an end, a tube holding movable part rotating means for applying a force to rotate the tube holding movable part in a direction in which the tube holding fixed part and the tube holding movable part are divided, and a tube holding movable part rotating means for causing the tube holding part to hold the tube. When the tube-holding movable part is engaged with the locking end of the tube-holding movable part to prevent rotation of the tube-holding movable part, and when the tube is released from being held, the tube-holding movable part is disengaged with the locking end of the tube-holding movable part and the tube is Since it has a stopper means that rotates the holding movable part and divides the tube holding movable part and the tube holding fixed part, the tube holding part can be divided into the tube holding fixed part and the tube holding movable part with one touch. This operation can be performed simply by one-touch operation of the lever, and therefore, the holding state of the tube can be released by a simple one-touch operation.
The tube can be separated from the clamp body in a short time and has excellent operability.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view of main parts of a tube holding portion of a tube clamp for a roller pump according to an embodiment of the present invention when the tube is in a state of holding a tube, and FIG. 2 is a sectional view of main parts shown in FIG. 1. FIG. 3 is a front cross-sectional view of main parts when the tube holding part of the tube clamp for a roller pump is in a divided state, and FIG. 3 shows the entire roller pump having a tube clamp for a roller pump according to an embodiment of the present invention. A perspective view of
FIG. 4 is a perspective view of the entire roller pump shown in FIG. 3, showing a state in which the tube holding movable portion of the roller pump tube clamp is rotated upward. DESCRIPTION OF SYMBOLS 1... Lever shaft, 2... Lever mounting plate, 3... Link, 4... Connection groove, 5... Stopper means, 6... Stopper means rotating shaft, 7... Spring, 8... Locking protrusion, 9... Tube holding movable part, DESCRIPTION OF SYMBOLS 10...Tube holding movable part rotating shaft, 11...Locking surface part, 12...Tube holding movable part locking end, 13...Spring.

Claims (1)

[Claims] 1. A tube holding part that is divided into a tube holding fixed part and a tube holding movable part capable of holding the tube on the outer circumference of the tube, and a rotation shaft provided in the tube holding movable part. and a tube holding movable part locking end, a tube holding movable part rotating means for applying a force to rotate the tube holding movable part in a direction in which the tube holding fixed part and the tube holding movable part are divided; When the holding part holds the tube, it engages with the locking end of the tube holding movable part and prevents rotation of the tube holding movable part, and when releasing the holding of the tube, it engages with the locking end of the tube holding movable part. A tube clamp for a roller pump, comprising a stopper means for disengaging the tube holding movable part to rotate the tube holding movable part and dividing the tube holding movable part and the tube holding fixed part. 2. There are two sets of the tube holding part, the rotating shaft, the tube holding movable part rotating means, and the stopper means, and the two sets of stopper means are interlocked when releasing the holding of the tube, and the two sets of the stopper means are interlocked when releasing the holding of the tube. The tube clamp for a roller pump according to claim 1, wherein the tube holding movable part and the tube holding fixed part of the holding part are separated at the same time. 3. The stopper means is a longitudinal member rotatably supported in the middle, and the longitudinal member has one end surface in abutting contact with the locking end of the tube holding movable part to stop the rotation of the tube holding movable part. and a stopper means rotating means for applying a force to rotate the longitudinal member in a direction in which the locking surface portion and the locking end of the tube holding movable portion engage with each other. A tube clamp for a roller pump according to item 1 or 2.