JPH10192397A - Transfusion device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely hold a flange part at a slider by providing a means for pressurizing and holding the flange part of a sucker on the slider by energizing it rotatably clockwise by a spring and linking it with a lever. SOLUTION: A holding arm 5 is pivotally supported to the slider 3 for holding the flange part 2-1 of the sucker 2 freely rotatably parallelly to the spindle 4-3 of the lever 4 by the spindle 5-1. A small projection 5-3 is provided on the side face of the holding arm 5 and it is rotated and energized clockwise by the energizing force of the spring 5-2. When the push button 4-1 of the lever 4 is pushed and the lever 4 is turned, a projection 4-2 projectingly provided on the lower part of the spindle 4-3 of the lever 4 pushes the small projection 5-3 of the holding arm 5. Thus, the arm 5 is turned counterclockwise against the spring 5-2 and the holding arm 5 is opened. Thus, the flange part 2-1 can be received, and when the flange part 2-1 is entered by the operation of the sucker 2, the holding arm 5 is restored by releasing the pressurization of the push button 4-1 and the flange part 2-1 is surely held.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an infusion device,
The rotation of the prime mover moves the syringe sucker,
The present invention relates to a drive mechanism of an infusion device for injecting blood or the like into a human body.

[0002]

2. Description of the Related Art FIGS. 3A and 3B show a side view of a main part of a conventional infusion device, which shows a state in which an outer cylinder of a syringe and a sucker housed in the syringe are mounted on a main body of the infusion device. 3A shows a state before the syringe 1 and the sucker 2 are mounted on the infusion device, and FIG. 2B shows a state after the mounting. 3A and 3B, 1 is a syringe, 1-1 is a flange of the syringe 1, 2 is a sucker, 2-1 is a flange of a sucker, 3 is a slider, and 3-1 is a sucker of a slider. The holding member of the flange portion, 3-2 is a pressing portion of the sucker, 3-3 is a groove portion, 4 is a lever which abuts on an interlocking rod which is interlocked with a slider releasing device (not shown), and 4-1 is a lever. Reference numeral 10 denotes a main body, and 10-1 denotes a groove for receiving a flange portion 1-1 of a syringe provided in the main body. In FIG. 3A, in order to mount the syringe 1 and the sucker 2 housed therein to the infusion device main body 10, the push button of the lever 4 abuts on the interlocking bar that is interlocked with the release device (not shown) of the slider 3. 4-1 is pressed to release the engagement between the slider 3 and the feed screw (not shown), and the slider 3 is moved in the direction of the flange 2-1 of the sucker 2 of the syringe to press the pressing portion 3--1. The push button 4-1 is returned while the base 2 is pressed against the bottom of the sucker 2, and the syringe 1 is attached to the main body, and the flange of the sucker 2 is attached to the slider, as shown in FIG. 3B. However, the width of the groove 3-3 of the holding member of the flange of the slider of the slider 3 is set to a size corresponding to the maximum dimension of the collar of the mounted sucker 2.

[0003]

In the conventional construction as described above, the width of the groove 3-3 of the holding member of the collar portion of the suction piece is constant, so that the thickness of the syringe or the thickness of the collar portion of the suction piece depends on the manufacturer. When the syringe is mounted on the apparatus, the flange cannot be securely held on the slider when the syringe is mounted on the apparatus, for example, a gap is formed between the holding member 3-1 and the flange 2-1 of the sucker. was there.

[0004]

An infusion device according to the present invention has a feed screw driven by a prime mover, and presses a sucker of a syringe with a linearly movable slider engaged with the feed screw to transfer liquid. An infusion device configured to send out, comprising a push button protruding from the slider at one end of a lever rotatably supported by a first support shaft provided at right angles to the movement direction of the slider and horizontally. In contact with the interlocking rod that interlocks with the slider release device,
A holding means for pressing and holding the collar portion of the sucker on the slider is provided at a second position provided in another position in parallel with the first support shaft.
The slider is rotatably supported by the support shaft, and is biased to rotate clockwise by a spring, and interlocking means for interlocking the holding means and the lever is provided on the slider.

[0005] In the above-described configuration, since the collar portion of the sucker is pressed and held by the holding arm against the slider abutting portion of the slider, it is ensured even if the size of the collar portion of the sucker changes. Be able to hold.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1A and 1B are views showing a state before a slider according to an embodiment of the present invention is connected to a flange portion of a syringe sucker. FIG. 1A is a side view of a main part, and FIG.
FIG. 2 is a front view taken along line AA ′ of FIG. Also, FIG.
2A and 2B are views showing a state after the slider is held on the collar portion of the sucker, FIG. 2A is a side view of a main part, and FIG.
FIG. 2 is a front view in the direction of arrows along the line AA ′ of FIG.

In FIG. 1A and FIG. 1B, two holding arms 5 of a slider 3 for holding a collar portion of a sucker are rotatably supported by a support shaft 5-1. 5-3 is provided and urged to rotate clockwise by a spring 5-2. On the other hand, a lever 4 for operating an interlocking rod 6 interlocking with a slider releasing device (not shown) is rotatably supported by a support shaft 4-3, and is positioned below the support shaft 4-3 of the lever 4. A projection 4-2 protruding leftward is provided, and in a state where the push button 4-1 of the lever 4 is pressed, the tip of the projection 4-2 is provided on a side surface of the holding arm 5 with a small projection 5 The arm 5 is pressed counterclockwise against the force of the spring 5-2 to open the holding arm 5 as shown in the drawing to make it easier to receive the collar of the sucker.

Next, the slider 3 is moved in the direction of the end of the sucker 2 of the syringe, and the slider pressing portion 3 of the slider 3 is moved.
When the push button 4-1 of the lever 4 is returned by bringing the holding member 5 into contact with the end of the sucker, the projection 4-2 of the lever 4 is retracted as shown in FIGS. By rotating clockwise by the force of 2, the collar 2-1 of the sucker is pressed by the holding arm 5 against the sucker pressing portion 2-2 of the slider 3 and held. That is, since the holding arm 5 presses and holds the flange 2-1 of the sucker against the pressing portion 3-2 of the sucker by the force of the spring 5-2, even if the dimensions of the flange of the sucker are uneven. Regardless, it can be securely held.

Further, the outer cylinder 1 of the syringe is connected to the infusion device main body 10.
Also when removing the syringe, pressing the push button 4-1 of the lever 4 opens the holding arm 5 in conjunction therewith, opening the collar of the sucker, so that the syringe can be easily removed from the main body 10.

[0010]

Since the infusion device according to the present invention has the above-described structure, when the syringe is attached to or detached from the infusion device main body, the operation of pressing the slider release button causes the flange to be pressed and held.
Since the configuration is such that the release is easy, the handling becomes very easy, and the burden on the operator can be reduced.

[Brief description of the drawings]

FIG. 1A is a drawing of a main part showing a state before holding a collar portion of a sucker with a slider of an embodiment of an infusion device according to the present invention.

FIG. 1B is a sectional view taken along line A-A ′ of FIG. 1A.

FIG. 2A is a drawing of a main part showing a state after holding a collar portion of a sucker with a slider in an embodiment of an infusion device according to the present invention.

FIG. 2B is a sectional view taken along the line A-A ′ of FIG. 2A.

FIG. 3A is a drawing of a main part showing a state in which a collar of a suction piece is held by a slider of an infusion device conventionally implemented.

FIG. 3B is a drawing of a main part showing a state in which a collar of a suction tube is held by a slider of a conventionally implemented infusion device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Syringe 1-1 Syringe flange part 2 Suction piece 2-1 Suction piece flange part 3 Slider 3-1 Suction piece flange holding member 2-2 Slider suction piece pressing part 3-3 Suction piece Groove section of holding member of flange section 4 Lever 4-1 Lever push button 4-2 Lever projection 4-3 Lever support shaft 5 Flange holding arm 5-1 Holding arm support shaft 5-2 Spring 5-2 Small protrusion of arm 6 Interlocking rod 10 Infusion device main body

Claims (3)

[Claims] An infusion device having a feed screw driven by a prime mover and configured to press a syringe sucker by a linearly movable slider engaged with the feed screw and to send out liquid, wherein the movement of the slider is controlled. One end of a lever rotatably supported by a first support shaft provided at right angles to the direction and horizontally is provided with a push button protruding from a slider, and the other end abuts on an interlocking rod that is interlocked with a slider release device. A holding means for pressing and holding the collar of the sucker on the slider is rotatably supported by a second support shaft provided at another position in parallel with the first support shaft. An infusion device urged by a spring so as to rotate clockwise, and interlocking means for interlocking the holding means and the lever are provided on the slider. 2. The infusion device according to claim 1, wherein said interlocking means has a spring for urging said holding means to rotate clockwise. 3. The interlocking means has a projection on the other side of the lever that engages with a small projection provided at an end of the holding arm, and moves the holding arm counterclockwise through the projection. The infusion device according to claim 1, wherein the infusion device can be rotated.