KR101739368B1 - Medical Fluid Injector Having Multi-Type Flow Rate Controlling Apparatus - Google Patents

Abstract

A first transfer line branched from the chemical liquid inflow line and connected to the chemical liquid inflow line; A rotatable operation knob; Second transfer lines branching from the chemical liquid inflow line and each of the elastically deformable tubes being located at different heights on one side of the operation knob and flowing at different flow rates of the chemical liquid; A support member disposed between the operation knob and the tubes to support the tubes; A confluence line for providing a chemical solution from the second transfer lines to the outflow line; A bolus bag provided on the merging line and storing the chemical solution introduced from the second transfer lines; And a channel opening / closing means for selectively urging or releasing the tubes against the support member in accordance with the angle at which the operation knob is rotated, so as to adjust the time at which the bolus bag is filled with the chemical solution from the second transfer lines Lt; / RTI >

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a medical fluid injector having a multi-type flow rate control device,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates generally to a drug solution injector used for administering a drug solution such as an analgesic drug or an antibiotic drug to a patient.

In general, cancer patients are treated with special antibiotics to treat cancer. Analgesics are administered to patients who need pain management to relieve pain. Unlike other common medicines, special medicines such as antibiotics and analgesics are used excessively It is very important to administer the correct amount within the allowable range because the patient can lead to coma or shock when administered, and in the opposite case, when the dose is low, the drug can not achieve the purpose exactly.

Previously, the drug solution was administered using a syringe. However, in the system using the syringe, it is very difficult to keep the dose of the drug solution per unit time because the dose of the drug solution is determined according to the skill of the syringe operator and the operator must be continuously involved each time the drug solution is administered. That is, it was not easy to manage and maintain the dose of the drug solution.

Alternatively, the dosage may be adjusted by providing a dose adjusting device in the hose for drug solution administration. However, since the dose of the drug solution is controlled according to the degree to which the dosage adjusting mechanism presses the hose, it is difficult to accurately administer the required amount of the nutrient solution depending on the condition of the patient who changes frequently.

It is an object of the present invention to provide a chemical injector which includes a device capable of more precisely controlling the chemical liquid to be injected at a desired flow rate.

The problems to be solved are not limited thereto, and other matters not mentioned can be clearly understood by those skilled in the art from the following description.

According to an embodiment of the present invention, there is provided a cleaning apparatus comprising: a first transfer line branched from a chemical liquid inflow line and connected to a chemical liquid discharge line; A rotatable operation knob; A plurality of second transfer lines branched from the chemical liquid inflow line and each having an elastically deformable tube, the tubes being located at different heights on one side of the outer peripheral region of the operation knob, and the chemical liquid flowing at different flow rates; A tube support member disposed to interpose the tubes positioned at different heights between the tubular support member and the manipulation knob; A merging mechanism for merging the chemical liquids from the second transfer lines and a merging line for providing the chemical liquid from the merging mechanism to the chemical liquid discharge line; A chemical liquid feed unit provided on the merging line and storing the chemical liquid from the second conveyance lines and for sending the stored chemical liquid toward the chemical liquid outlet line when an external force is applied; Selectively pushing or releasing the tubes relative to the tube support member such that at least one of the second transfer lines is closed or both of the second transfer lines are opened according to the rotation angle of the operation knob, And a channel opening / closing means for adjusting the time for the chemical solution from the second transfer lines to be filled in the bolus bag of the unit.

Wherein the tube opening and closing means is interposed between the operation knob and the tubes at respective heights corresponding to the tubes and is in contact with the outer periphery of the operation knob in a state where both ends are supported by the tube support member, A plurality of leaf springs having portions bent toward the tubes and pressing the tubes on each height; Wherein at least one of the plate springs is provided on at least one of the plate springs at an outer circumference of the operation knob, and when the operation knob is rotated to face the plate spring on the corresponding height, Restoring the plate spring opposing to press the tube due to the rotation of the operating knob, and restoring all of the leaf springs according to the rotation angle of the operation knob, or at least one of the leaf springs is held in a convexly bent state And may include a concave portion that is disposed so as to be able to be moved.

Wherein the leaf springs are arranged in such a manner that a pressing portion is protruded on a side facing the tube on the corresponding height and is brought into contact with the outer periphery of the operation knob in accordance with the rotation angle of the operation knob toward the outer periphery of the operation knob, A protrusion may be provided.

Wherein the tube supporting members are provided with concave receiving grooves in which the tubes are respectively placed, and the tubes placed in the receiving groove portions are connected to two end portions of the tube supporting members, respectively, The leaf springs are connected to the two groove cover portions at both ends between the two groove cover portions so that both end portions of the leaf spring can be supported by the tube support member.

The chemical liquid injector according to the embodiment of the present invention comprises: a case in which the operation knob and the chemical liquid pressure feeding unit are respectively mounted externally so as to be operable; And a rotation angle determination unit that determines a position between the case and the operation knob so as to rotate the operation knob according to a predetermined angle.

The rotation angle determining means includes a plurality of engagement groove portions provided at the predetermined angular intervals along the circumferential direction below the operation knob; And a locking protrusion provided to the case so as to be fitted in at least one of the locking recesses in accordance with the rotation angle of the operation knob.

Means for solving the problems will be more specifically and clarified through the embodiments, drawings, and the like described below. In addition, various solution means other than the above-mentioned solution means may be further proposed.

The present invention can finely and accurately control the flow rate of the chemical liquid. In addition, it is possible to prevent the drug solution from being excessively administered to the administration subject.

1 and 2 are a perspective view and an exploded perspective view showing a chemical liquid flow rate control apparatus according to a first embodiment of the present invention.
3 is a perspective view illustrating the internal structure of the chemical liquid flow rate control apparatus according to the first embodiment of the present invention.
Fig. 4 is a perspective view showing the operation knob shown in Figs. 1 and 2. Fig.
5 is a sectional view taken along line AA in Fig.
6 and 7 are cross-sectional views taken along line BB and line CC in Fig.
8 to 11 are use state diagrams showing whether the chemical liquid transfer lines are opened or closed according to the rotation angle of the operation knob of the chemical liquid flow rate control apparatus according to the first embodiment of the present invention.
12 is an exploded perspective view illustrating a chemical liquid flow rate control apparatus according to a second embodiment of the present invention.
13 to 20 are use state diagrams showing whether the chemical liquid transfer lines are opened or closed according to the rotation angle of the operation knob of the chemical liquid flow rate control apparatus according to the second embodiment of the present invention.
21 is an exploded perspective view illustrating a chemical liquid flow rate control apparatus according to a third embodiment of the present invention.
22 to 24 are a plan view, a perspective view, and a configuration view showing an example of a chemical injector according to the present invention.
25 is a configuration diagram showing another example of the chemical injector according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. For a better understanding of the invention, it is to be understood that the size of elements and the thickness of lines may be exaggerated for clarity of understanding. Further, the terms used to describe the embodiments of the present invention are mainly defined in consideration of the functions of the present invention, and thus may be changed depending on the intentions and customs of the user and the operator. Therefore, the terminology should be interpreted based on the contents of the present specification throughout.

[Chemical Solution Flow Control Apparatus of First Embodiment]

1 to 11 show a chemical liquid flow rate control apparatus according to a first embodiment of the present invention.

1 and 2, the chemical liquid flow rate control apparatus according to the first embodiment of the present invention includes a lower first case 10A and an upper second case 10B coupled to the first case 10A. An operation knob 20 operated according to the user's operation, and two chemical liquid transfer lines 30A and 30B for transferring the chemical liquid.

Referring to FIGS. 2 and 5, the operation knob 20 is rotatably installed in the case 10A, 10B about an axis CL extending in the Z-axis direction. Specifically, a shaft member 11 is vertically erected on the bottom of the first case 10A as a case body, and a center groove 21 on the lower side of the operation knob 20, in which the shaft member 11 is fitted, So that the operation knob 20 is rotated around the shaft member 11. As shown in Fig. The second case 10B as a cover is provided with a knob opening 12 for exposing the upper side of the operation knob 20 to the outside of the cases 10A and 10B.

Referring to Figs. 2 and 5 to 7, the chemical liquid transfer lines 30A and 30B each have elastically deformable tubes 31 and 32, respectively. As shown in Figs. 5 to 7, the chemical liquid transfer lines 30A and 30B are arranged so that the tubes 31 and 32 on the outer peripheral side of the operation knob 20 in the inner space of the cases 10A and 10B And the tubes 31 and 32 are arranged to be located at different first and second heights H1 and H2 so that the tubes 31 and 32 are concentratedly disposed on the outer peripheral side of the innermost knob 20. [ The chemical liquid transfer lines 30A and 30B may be partly or wholly composed of the tubes 31 and 32. The tubes 31 and 32 may be arranged in the Y-axis direction. Silicone tubes, PVC tubes, etc., which can be restored to their original shape, can be applied to the tubes 31 and 32.

3 and 5, the tubes 31 and 32 are supported in the inner space of the cases 10A and 10B with the tubes 31 and 32 positioned between the operation knob 20 A tube supporting member 40 is provided. The tube receiving grooves 41 and 42 in which the tubes 31 and 32 on the different heights H1 and H2 are respectively positioned are provided in front of the tube supporting member 40 facing the operation knob 20, As shown in Fig.

As shown in Figs. 3, 6 and 7, the tube support member 40 is detachably mounted on the inner wall of the first case 10A. To this end, a coupling step 13 is formed on both sides of the inner wall of the first case 10A to form an insertion groove between the first case 10A and the inner wall of the first case 10A. A fitting portion 43 is provided on both sides of the insertion groove portion formed by the coupling jaws 13 on both sides. The coupling jaw 13 and the fitting portion 43 are preferably configured such that the tube supporting member 40 can be slidably engaged from the upper side to the lower side.

2, 6 and 7, the tubes 31, 32 placed in the respective tube receiving grooves 41, 42 are arranged on both sides in the longitudinal direction of the tube supporting member 40 in front of the tube supporting member 40 And are separated from each other by the groove cover 45 which shields both ends of the tube receiving groove portions 41, 42 by being coupled with each other.

2 to 5, the tubes 31 and 32 are compressed by the pipeline opening / closing means 50 so as to open / close the chemical liquid transfer lines 30A and 30B inside the cases 10A and 10B, Is released. In the cases 10A and 10B, a chemical liquid flow path for introducing the chemical liquid into the chemical liquid transporting lines 30A and 30B at different flow rates and for introducing the chemical liquid flowing out from the chemical liquid transporting lines 30A and 30B into a single flow A chemical solution joining mechanism 65 is provided. In Fig. 1, reference numeral 70 denotes an operation handle used for an operation to rotate the operation knob 20.

3, the chemical liquid branching mechanism 60 includes a single inflow pipe 61 into which the chemical liquid flows from the chemical liquid supply source, a plurality of chemical liquid feed lines 30A and 30B branched from the inflow pipe 61, And two flow control tubes 62A and 62B connected to one of the ends of the two flow control tubes 62A and 62B, respectively. The inlet pipe 61 is disposed outside the case 10A and 10B and the flow rate control pipes 62A and 62B are disposed inside the case 10A and 10B. 1 and 2, a chemical liquid inlet hose 2 constituting a chemical liquid inflow line is connected to the inlet of the inflow pipe 61 by transferring the chemical liquid from the chemical liquid supply source. As the flow rate control pipes 62A and 62B, capillaries having different channel cross-sectional areas may be used.

The chemical liquid confluence mechanism 65 includes a single confluent pipe 66 and two branch pipes 67 branched from the confluent pipe 66 and connected to the other of the opposite ends of the chemical liquid transfer lines 30A and 30B respectively . The confluent pipe 66 has an outlet disposed outside the case 10A and 10B and a branch pipe 67 disposed inside the case 10A and 10B. 1 and 2, at the outlet of the confluent pipe 66, the outflow medicinal liquid from the confluent pipe 66 is transferred to a desired place (patient or the like), and the chemical liquid outflow hose 4 constituting the chemical liquid outflow line, Respectively. An injection unit (for example, an injection needle, a catheter, or the like) for injecting the chemical liquid into the administration subject (patient or the like) may be connected to the chemical solution outflow hose 4.

A branch pipe may be used instead of the flow rate control pipes 62A and 62B in the chemical liquid branching mechanism 60 and a flow rate control pipe may be used instead of the branch pipes 67 in the chemical liquid joining mechanism 65. [ Alternatively, a branch pipe may be used instead of the flow rate control pipes 62A and 62B in the chemical liquid branching mechanism 60, and a part of the chemical liquid transfer lines 30A and 30B may be a flow rate control pipe.

As shown in Fig. 1, the operation handle 70 is detachably coupled to the upper side of the operation knob 20 through the knob opening 12 at the outside of the case 10A, 10B. An operation handle 70 is provided on the upper side of the operation knob 20 in a vertical direction and the operation handle 70 extends from the handle 71 of the operation handle 70 and is fitted into the engagement groove 22 And has a coupling rod 72.

The operation knob 20 is rotated in the same direction as the operation handle 70 when the operation handle 70 is rotated using the handle 71 by inserting the coupling rod 72 into the engagement groove portion 22. The engaging groove portion 22 is formed in a shape having a circular inner periphery and a polygonal outer periphery (octagonal shape or the like) so that the operation knob 20 can be operated only by the operation handle 70, It can be formed in a shape corresponding to the shape of the engaging groove 22.

2 and 4 to 7, the pipeline opening / closing means 50 opens or closes all the chemical liquid transfer lines 30A and 30B in accordance with the rotation angle of the operation knob 20, or opens / closes the chemical liquid transfer lines 30A , 30B) to be controlled by controlling the flow rate of the chemical liquid flowing out of the confluent pipe (66). The opening and closing means 50 includes two leaf springs 51 and 52 interposed between the operation knob 20 and the tubes 31 and 32 and a plurality of concave portions provided on the outer periphery of the circular operation knob 20 54A, 55A, 54B, and 55B.

5 to 7, the leaf springs 51 and 52 are disposed on the respective heights corresponding to the heights H1 and H2 of the tubes 31 and 32, respectively, and have a circular operation knob 20, And selectively compresses the chemical liquid transfer lines 30A and 30B by pressing the tubes 31 and 32 on the respective heights H1 and H2 by bending convexly toward the tubes 31 and 32 as they come in contact with the outer periphery of the chemical liquid transfer lines 30A and 30B.

The concave portions 54A, 55A, 54B and 55B are provided on at least one of the heights H1 and H2 corresponding to the leaf springs 51 and 52, respectively, and are formed in concave shapes. The concave portions 54A, 55A, 54B and 55B are formed on the corresponding heights H1 and H2 on the position so as to face the leaf springs 51 and 52 on the corresponding heights H1 and H2 when the operation knob 20 is rotated The bent state of the tubes 31 and 32 by the leaf springs 51 and 52 is released by restoring the bent leaf springs 51 and 52 to the original state while entering the inside. In other words, the chemical liquid transfer lines 30A and 30B are selectively opened.

The leaf springs 51 and 52 may be made of elastic metal or synthetic resin. As shown in Figs. 2, 6 and 7, the plate springs 51 and 52 are connected to both end portions in the longitudinal direction of the groove cover 45 on both sides. The leaf springs 51 and 52 may be integrated with the groove cover 45. [

6 and 7, the leaf springs 51 and 52 are provided with pressing portions P1 projecting toward the tubes 31 and 32 toward the tubes 31 and 32, respectively. The pressing portion P1 applies pressure to the tubes 31 and 32 when the leaf springs 51 and 52 are bent toward the tubes 31 and 32 to press the tubes 31 and 32 ). The pressing portion P1 may be formed to have a sharp end. The leaf springs 51 and 52 are provided on the side of the operation knob 20 facing the outer periphery of the operation knob 20 or on the side of the operation knob 20 in such a manner that protruding portions P2 entering into the recesses 54A, 55A, 54B and 55B .

2, 4 and 5, two recesses 54A, 55A, 54B and 55B are provided on the corresponding heights H1 and H2 corresponding to the leaf springs 51 and 52, respectively. 2 and 4, the first concave portion 54A and the second concave portion 55A of the first height H1 are spaced by 90 degrees along the outer circumferential direction of the operation knob 20 Respectively. The first concave portion 54B having the second height H2 higher in height than the first height H1 is arranged on the same straight line in the vertical direction as the first concave portion 54A of the first height H1 And the second concave portion 55B of the second height H2 is spaced 180 degrees from the first concave portion 54B of the second height H2 along the circumferential direction of the operation knob 20 . The first concave portion 54A of the first height H1 and the first concave portion 54B of the second height H2 may be formed to have an integral structure communicating with each other.

According to the arrangement structure of the concave portions 54A, 55A, 54B and 55B, the chemical liquid conveying lines 30A and 30B are provided on both sides of the tubes 31 and 32 when the operation knob 20 is rotated in 90- Or a part thereof is pressed by the plate springs 51, 52 or all of the pressed state by the leaf springs 51, 52 is released.

2 and 4, reference numeral 23 denotes a latching step provided along the upper edge of the operation knob 20. The latching jaw 23 prevents displacement of the operation knob 20 due to the upward movement of the operation knob 20 by engaging with the periphery of the knob opening 12. [

In Figs. 2, 4 and 5, reference numerals 14 and 24 are rotation angle determining means for determining the position of the operation knob 20 so that the operation knob 20 can be rotated in a 90 degree angle unit. The rotation angle determining means 14 and 24 include four engagement grooves 24 provided at 90 degrees apart in the circumferential direction below the operation knob 20 so as to be positioned around the center groove 21, 10A) is fitted to at least one of the engagement grooves (24) in accordance with the rotation angle of the operation knob (20). At least one of the engaging protrusion 14 and the engaging recesses 24 may have an inclined surface or a rounded surface that serves as a guiding groove so that the engaging protrusion 14 is naturally inserted into the engaging recessed portion 24, . The engaging protrusion 14 and the engaging groove 24 may be displaced from each other. Alternatively, instead of providing only one latching groove 24, four latching protrusions 14 may be provided.

The chemical liquid flow rate control apparatus according to the first embodiment of the present invention is characterized in that the flow rate control connected to the chemical liquid transfer line 30A having the tube 31 of the first height H1 among the two flow control tubes 62A, The pipe 62A flows at a flow rate of 2 mL / h at a flow rate of 2 mL / h, and the flow rate control pipe 62B connected to the chemical liquid feed line 30B having the tube 32 at the second height H2, The amount of the drug solution to be administered to the subject can be controlled by selecting one of the four modes as follows. This will be described with reference to FIGS.

The leaf springs 51 and 52 are positioned so as to face the first concave portions 54A and 54B of the first and second heights H1 and H2 disposed on the same straight line, 9, when the operation knob 20 is rotated 90 degrees in the clockwise direction (rotated 90 degrees in the counterclockwise direction depending on the arrangement of the concave portions) when viewed from above, the plate springs All of the tubes 31 and 32 are bent by the leaf springs 51 and 52 so that the tubes 31 and 32 are bent by the leaf springs 51 and 52, And is held in a pressurized closed state. This is an OFF (OFF, 0 mL / h) mode in which the chemical liquid does not flow out from the confluent pipe 66. Of course, in the process of rotating the operation knob 20 by 90 degrees, the locking protrusion 14 is removed from the locking groove portion 24 and is inserted into the next engaging groove portion 24, The position is determined.

Next, when the operating member 20 is rotated 90 degrees clockwise as viewed from above, the leaf spring 51 of the first height H1 is maintained in the bent state, as shown in Fig. 10, The tube 31 of the first height H1 is held in a closed state pressed by the leaf spring 51 of the first height H1 and the leaf spring 52 of the second height H2 is held at the second height H2, The tube 32 of the second height H2 is restored to the original state by the pressing of the leaf spring 52 of the second height H2 by the second height H2, And the chemical liquid flows out from the confluent pipe 66 at a flow rate of 1 mL / h.

11, the leaf spring 51 of the first height H1 is rotated by 90 degrees in the clockwise direction when the operating member 20 is viewed from above, The tube 31 of the first height H1 is restored to the open state in which the pressing by the leaf spring 51 of the first height H1 is released, And the plate spring 52 of the second height H2 is deformed to be bent from the circular surface toward the tube 32 of the second height H2 as it is in contact with the outer periphery of the operation knob 20, The tube 32 of the second tube H2 is closed by the leaf spring 52 of the second height H2 so that the chemical solution flows out from the junction tube 66 at a flow rate of 2 mL / h.

8, the plate spring 51 of the first height H1 is rotated in the counterclockwise direction by an additional 90 degrees when the operating member 20 is rotated from the top, The tube 31 of the first height H1 is held at the first height H1 by the leaf spring 51 of the first height H1 being released And the leaf spring 52 of the second height H2 is restored to the original state in the bent state as it enters the first recessed portion 54B of the second height H2, The tube 32 of the second tube H2 is released from the pressurization by the leaf spring 52 of the second height H2 so that the chemical liquid flows out from the confluent tube 66 at a flow rate of 3 mL / h.

Table 1 summarizes the operations as described above.

[Table 1]

O: open, X: closed

The chemical liquid flow rate control apparatus according to the first embodiment of the present invention, which operates in this way, can be very usefully used as follows.

In the case of the surgical patients, there is a difference in the degree of pain depending on the type of operation or individual difference, but most of them feel very severe pain at the beginning of the operation, and the pain gradually decreases with time, It is alleviated. 8, when the drug solution is administered to the patient for the purpose of pain management, the drug delivery lines 30A and 30B are all opened in the initial stage of the operation, and then the dose of the drug solution is gradually increased As shown in FIG.

In the case of terminal cancer patients, the pain felt gradually increases with time, as opposed to the operation patients, so the dose of the drug solution can be increased step by step.

In the chemical liquid flow rate control apparatus according to the first embodiment of the present invention, the tubes 31 and 32 and the leaf springs 51 and 52 are not sprayed to a plurality of positions, It is possible to further simplify the arrangement structure of the chemical liquid transfer lines 30A and 30B and the installation structure of the leaf springs 51 and 52 so as to achieve compactness, There is an advantageous effect in terms of

Reference numeral 15, which is not described above, is a directive. The instruction unit 15 is provided on the upper side of the second case 10B so as to be positioned on one side of the periphery of the knob opening 12 and can be seen from the outside, and on the upper side of the operation knob 20, (0 mL / h, 1 mL / h, 2 mL / h, 3 mL / h) or modes (0, A, B, and C) indicated by the indicator 15 every time the knob 20 is rotated in 90- ) Is displayed.

[Chemical fluid flow control device of the second embodiment]

A chemical liquid flow rate control apparatus according to a second embodiment of the present invention is shown in Figs. 12 to 20. Fig.

The chemical liquid flow rate control device according to the second embodiment of the present invention is configured to selectively open and close two chemical liquid transfer lines to adjust the chemical liquid flow rate, so that compared with the chemical liquid flow control device of the first embodiment having a two- Channel structure except that the other structures and operations are all the same. This is explained as follows.

The chemical liquid flow rate control apparatus according to the second embodiment of the present invention includes chemical liquid transfer lines 130A, 130B and 130C, leaf springs 151, 152 and 153, flow control tubes 162A, 162B and 162C, And a branch pipe 167 are provided in each case, and 12 recesses are provided.

The chemical liquid transfer lines 130A, 130B and 130C are arranged such that the tubes 131, 132 and 133 are arranged at the outer sides of the operation knob 120 at different first, second and third heights H11, H12 and H13 . Of course, the tubes 131, 132 and 133 on the respective heights H11, H12 and H13 are individually placed in the three tube receiving grooves provided in the tube supporting member 140, and the chemical solution transfer lines 130A, 130B, 130C are connected to both ends of the flow rate control pipes 162A, 162B, 162C and the branch pipe 167, respectively.

The leaf springs 151, 152 and 153 are disposed at positions corresponding to the heights H11 and H12 of the tubes 131, 132 and 133 so as to be positioned between the outer periphery of the operation knob 120 and the tubes 131, H12, and H13, respectively.

Four recesses are provided on the respective heights H11, H12 and H13 corresponding to the leaf springs 151, 152 and 153 at the outer periphery of the operation knob 120, and the leaf springs 151, 152 and 153 130B, and 130C or both of the chemical liquid transfer lines 130A, 130B, and 130C by selectively pressing or releasing the compression of the tubes 131, 132, and 133 by the combined action of the chemical liquid transfer lines 130A, , And 130C, respectively.

The flow rate control pipe 162A connected to the chemical liquid transfer line 130A having the tube 131 on the first height H11 has a flow rate of the chemical liquid of 4 mL / h And the flow rate control pipe 162B connected to the chemical liquid transfer line 130B having the tube 132 on the second height H12 flows at a flow rate of 2 mL / h and flows through the tube When the chemical liquid is configured to flow at a flow rate of 1 mL / h, one of a total of eight modes is selected to control the amount of chemical solution to be administered to the subject Can be adjusted.

The first springs 154A and 154B of the first to third heights H11, H12 and H13 arranged in the same straight line in the up-and-down direction, as shown in Fig. 13, , The operation knob 120 is rotated in the counterclockwise direction by 45 degrees (rotated clockwise by 45 degrees depending on the arrangement structure of the concave portions) when viewed from above, The leaf springs 151, 152 and 153 are convexly bent toward the tubes 131, 132 and 133 in contact with the outer periphery of the operation knob 120, 133 are all closed by the leaf springs 151, 152, 153. This is an off (0 mL / h) mode.

15, the leaf springs 151 and 152 of the first and second heights H11 and H12 are rotated about the outer periphery of the operation knob 120, And the leaf spring 153 of the third height H13 enters the second recess 155C of the third height H13. The tubes 131 and 132 at the first and second heights H11 and H12 are closed and the tube 133 at the third height H13 is closed by the plate spring 133 at the third height H13 153 is restored to the original state, the third height H13 is released from the pressurization by the leaf spring 153, so that the chemical liquid flows out from the confluent pipe 166 at a flow rate of 1 mL / h.

16, the leaf springs 151 and 153 of the first and third heights H11 and H13 are moved in the same direction as that of the operation knob 120, And the plate spring 152 of the second height H12 enters the second recess 155B of the second height H12. Therefore, the tubes 131 and 133 of the first and third heights H11 and H13 are in the closed state and the tube 132 of the second height H12 is in the open state, Flow out at a flow rate of 2 mL / h.

17, the plate spring 151 of the first height H11 is brought into contact with the outer periphery of the operation knob 120, and the second wiper The leaf springs 152 and 153 of the three heights H12 and H13 enter the third recesses 156B and 156C of the second and third heights H12 and H13, respectively. Therefore, the tubes 131 of the first height H11 are in the closed state and the tubes 132 and 133 of the second and third heights H12 and H13 are in the open state. From the confluent tube 166, At a flow rate of 3 mL / h.

18, the leaf springs 152 and 153 of the second and third heights H12 and H13 are moved in the same direction as the operating knob 120, And the leaf spring 151 of the first height H11 enters the second recess 155A of the first height H11. Therefore, the tubes 132 and 133 of the second and third heights H12 and H13 are in the closed state and the tube 131 of the first height H11 is in the open state, Flows out at a flow rate of 4 mL / h.

19, the plate spring 152 of the second height H12 is brought into contact with the outer periphery of the operation knob 120, and when the operation knob 120 is further rotated by 45 degrees, The leaf springs 151 and 153 of the three heights H11 and H13 enter the third concave portion 156A of the first height H11 and the fourth concave portion 157C of the third height H13. Therefore, the tubes 132 of the second height H12 are in the closed state and the tubes 131 and 133 of the first and third heights H11 and H13 are in the open state. From the joining tube 166, Lt; RTI ID = 0.0 > mL / h. ≪ / RTI >

20, the leaf spring 153 of the third height H13 is brought into contact with the outer periphery of the operation knob 120, and when the operation knob 120 is further rotated by 45 degrees, The leaf springs 151 and 152 of the second heights H11 and H12 enter the fourth recesses 157A and 157B of the first and second heights H11 and H12. The tube 133 of the third height H13 is in the closed state and the tubes 131 and 132 of the first and second heights H11 and H12 are in the open state, The drug solution flows out at a flow rate of 6 mL / h.

Next, when the operation knob 120 is further rotated by 45 degrees and one rotation is completed, the leaf springs 151, 152, 153 are moved to the first concave portions 154A, 154B, 154C Respectively. At this time, the tubes 131, 132, and 133 are both opened, and the chemical liquid flows out from the confluent pipe 166 at a flow rate of 7 mL / h.

The operation of the chemical liquid flow rate control apparatus according to the second embodiment of the present invention is summarized in Table 2 below.

[Table 2]

O: open, X: closed

Reference numerals 110A and 110B, which are not described in FIG. 12, refer to a first case on the lower side and a second case on the upper side, and reference numeral 112 denotes a knob opening.

[Chemical Solution Flow Control Apparatus of Third Embodiment]

A chemical liquid flow rate control apparatus according to a third embodiment of the present invention is shown in Fig. As shown in Fig. 21, the chemical liquid flow rate control apparatus according to the third embodiment of the present invention is a chemical liquid flow rate control apparatus of the first embodiment (or the second embodiment) having a two-channel (or three- In comparison with the device, the other configurations and functions are the same except that they are configured to have a four-channel structure.

In the chemical liquid flow rate control apparatus according to the third embodiment of the present invention, the flow rate control tube connected to the chemical liquid transfer line 230A having the tube on the first height flows at a flow rate of 8 mL / h, The flow rate control tube connected to the chemical liquid transfer line 230B having the first height flows at a flow rate of 4 mL / h, and the flow rate control tube connected to the chemical liquid transfer line 230C having the tube at the second height, And the flow rate control tube connected to the chemical liquid transfer line 230D having the tube on the fourth height is configured so that when the chemical liquid flows at a flow rate of 1 mL / h, the operation knob 220 is rotated at an angle interval of 22.5 degrees, Mode can be selected to control the amount of the drug solution to be administered to the subject to be administered. Table 3 summarizes these.

[Table 3]

O: open, X: closed

Although the chemical liquid flow rate control apparatus according to the present invention has a two-channel, three-channel or four-channel structure, the chemical liquid flow rate control apparatus according to the present invention is not limited thereto. And the number of the plate springs, the flow rate control pipes, the branch pipes, and the like can be appropriately increased. Also, the number of the recesses provided for each height can be appropriately increased, and the arrangement structure of the recesses for each height can be appropriately changed.

In the chemical liquid flow rate control apparatus according to the present invention, the flow rate control pipes are set such that the chemical liquid flow rate is set to 1 mL / h, 2 mL / h or 1 mL / h, 2 mL / h, 4 mL / h, h, 1.0 mL / h or 0.5 mL / h, 1.0 mL / h, 2 mL / h, and the like.

[An example of a chemical injector]

An example of a chemical liquid injector including a chemical liquid flow rate control apparatus according to the present invention is shown in FIGS. 22 to 24. FIG.

As shown in FIGS. 22 to 24, an example of a chemical liquid injector includes a three-channel chemical liquid flow rate control device (reference numerals 120, 130A, and 130B) for regulating the amount of chemical liquid to be continuously administered to an administration subject, 130B, 130C, 140, etc.) and a bolus apparatus (see reference numerals 81, 82, etc.) for instantaneously increasing the amount of the chemical solution to be administered to the administration subject according to the operation of the user are applied. Of course, the chemical liquid flow rate control device may be applied to two or more channels, rather than three channels.

The chemical liquid flow rate control device and the bolus device are installed in a case including a lower first case and an upper second case which are coupled to each other.

The chemical liquid flow rate control device is configured to be the same as or similar to the chemical liquid flow rate control device of the three-channel structure according to the second embodiment. Accordingly, in describing the chemical liquid flow rate control device, the same reference numerals are assigned to the same components as those of the chemical liquid flow rate control device of the second embodiment.

The chemical liquid flow rate control device includes an operation knob 120, three first chemical liquid transfer lines 130A, 130B, and 130C, a tube support member 140, and first channel opening / closing means (plate springs and concave portions). When the operation knob 120 is rotated, the first chemical liquid transfer lines 130A, 130B, and 130C supported by the tube supporting member 140 are rotated by the first pipeline opening / closing means according to the rotation angle of the operation knob 120 And is selectively opened and closed. Since these are substantially the same as those of the chemical liquid flow rate control apparatus according to the second embodiment, detailed description thereof will be omitted.

The bolus device is provided on a single second liquid delivering line 81 and a second liquid delivering line 81 so that the liquid medicines from the second liquid delivering line 81 are stored therein and the stored liquid medicines are fed And a chemical solution feeding unit 82 for feeding the chemical solution.

The chemical fluid feeding unit 82 includes a bolus bag 83 in which the chemical liquid from the second chemical liquid feeding line 81 is stored and a push button 83 for applying an external force to the bolus bag 83 during the pressing operation And a second pipeline opening / closing means 85 for opening / closing the pipeline of the second chemical liquid transfer line 81 according to the operation of the push button 84. When the push button 84 is pressed, the chemical liquid stored in the bolus bag 83 is sent to the outflow side. The second channel opening and closing means 85 opens the channel of the second chemical liquid transporting line 81 when the push button 84 is pressed and conversely releases the pushing operation of the push button 84, As shown in Fig. Since these are disclosed in Korean Patent Publication No. 1126213, detailed description thereof will be omitted.

Reference numeral 160 denotes a chemical liquid flow branching mechanism; 165, a chemical liquid confluence mechanism; and 90, a chemical liquid flow continuous device.

The chemical liquid branching mechanism 160 may be constituted by a single inflow pipe 161 and a single flow control pipe 162 branched from the inflow pipe 161 and three branch pipes 163. In the liquid medicine branching mechanism 160, the chemical liquid inflow hose 2 is connected to the inflow pipe 161, one end of the second chemical liquid transfer line 81 is connected to the flow control pipe 162, One end of each of the first chemical liquid transfer lines 130A, 130B, and 130C may be connected to the second chemical liquid transfer line 163, respectively.

The chemical liquid confluence mechanism 165 may be constituted by a single confluent pipe 166 and a single branch pipe 167 branched from the confluent pipe 166 and three flow control pipes 168. In the chemical liquid confluence mechanism 165, the chemical liquid outflow hose 4 is connected to the confluent pipe 166, the other end of the second chemical liquid transfer line 81 is connected to the branch pipe 167, The other ends of the first chemical liquid transfer lines 130A, 130B, and 130C may be connected to the second liquid transfer lines 168A and 168B.

The liquid chemical branching mechanism 160 and the chemical liquid confluence mechanism 165 are arranged in such a manner that the chemical liquid is supplied to the first chemical liquid conveying lines 130A, 130B, and 130C when compared with the chemical liquid flow control apparatus according to the second embodiment. And the second chemical liquid transfer line 81 and merge the chemical fluids discharged from the first chemical liquid transfer lines 130A, 130B and 130C and the second chemical liquid transfer line 81 into a single flow, Other configurations and actions are the same or similar.

The chemical solution continuation device 90 is installed on the chemical solution outflow hose 4 and disposed outside the case. The chemical solution outflow sustaining device 90 is configured to temporarily store the chemical solution to be fed from the second chemical solution feed line 81 during the pushing operation of the push button 84 and continuously discharge the temporarily stored chemical solution to the chemical solution outflow hose 4 . The chemical solution continuation device 90 includes a balloon that is inflated by the pressure of the chemical liquid pumped from the bolus bag 83 and a backflow prevention mechanism that prevents the chemical liquid flowing out during contraction of the inflated balloon from flowing backward do. Since this is disclosed in Korean Patent Publication No. 1126213, detailed description thereof will be omitted.

According to one example of such a chemical liquid injector, the chemical liquid from the chemical liquid inlet hose 2 is branched from the chemical liquid branching mechanism 160 and is supplied to the first chemical liquid transfer lines 130A, 130B, and 130C and the second chemical liquid transfer line 81, Respectively.

If the chemical liquid flow rate control apparatus is not set to the OFF (0 mL / h) mode, the chemical liquids supplied to the first chemical liquid transfer lines 130A, 130B, and 130C are supplied to the chemical liquid flow combining apparatus 165 ≪ / RTI > The chemical solution provided in the second chemical liquid feed line 81 is stored in the bolus bag 83 but the channel of the second chemical liquid feed line 81 is opened only by pressing the push button 84, The chemical liquid stored in the chemical liquid confluence mechanism 165 does not flow out to the chemical liquid confluence mechanism 165. According to this, the chemical liquid is continuously administered to the administration subject at a flow rate set by the chemical liquid flow rate control device.

In this state, when the push button 84 is pushed, the second chemical liquid transfer line 81 is opened to the piping, and the bolus bag 83 is compressed, so that the chemical solution stored in the bolus bag 83 is fed And then flows into the chemical liquid joining mechanism 165. According to this, a large amount of drug solution (drug solution from the first drug delivery lines and drug solution from the bolus bag) is instantaneously administered to the subject to be administered. Of course, in this process, the chemical liquid flowing out of the chemical liquid confluence mechanism 165 is temporarily stored in the chemical liquid continuation device 90 and continuously supplied to the administration subject.

[Another Example of Chemical Solution Injector]

Another example of the chemical liquid injector including the chemical liquid flow rate control device according to the present invention is shown in Fig. As shown in Fig. 25, the other example of the chemical liquid injector differs from that of the chemical liquid injector only in that the other constituents and actions are the same, and only the point where the flow rate of the chemical liquid supplied to the bolus apparatus is adjusted This is different. This is explained as follows. For reference, the same reference numerals are given to the same components as those of the liquid injector.

Another example of the chemical fluid injector includes a first chemical liquid flow rate control device of a three-channel structure for regulating the amount of chemical liquid continuously administered to an administration subject according to a user's operation, an amount of a chemical liquid administered to the administration subject, (See 320, 330A, 330B, 340, etc.) of a two-channel structure for adjusting the amount of the chemical solution supplied to the bolus device according to the operation of the user do. Of course, the second chemical liquid flow control device may be configured to have a structure of three or more channels, rather than two channels.

The first chemical liquid flow rate control device includes a first operation knob 120, three first chemical liquid transfer lines 130A, 130B, and 130C, a first tube support member 140, and a first line opening / closing means.

The second chemical liquid flow rate control device includes a second operation knob 320, two second chemical solution transfer lines 330A and 330B, a second tube support member 340 and a second channel opening / closing means (plate springs and concave portions) . When the second operation knob 320 is rotated, the second chemical liquid transfer lines 330A and 330B supported by the second tube supporting member 340 are moved in the second pipe 370 in accordance with the rotation angle of the second operation knob 320, And is selectively opened and closed by the opening and closing means. Since these are substantially the same as those of the chemical liquid flow rate control apparatus according to the first embodiment, a detailed description thereof will be omitted.

Reference numeral 260 denotes a chemical liquid flow branching mechanism, 265 denotes a first chemical liquid confluence mechanism, and 365 denotes a second chemical liquid confluence mechanism.

The chemical liquid branching mechanism 260 may be composed of a single inflow pipe 261 and two flow control pipes 262 branched from the inflow pipe 261 and three branches 263. In the chemical liquid branching mechanism 260, a chemical liquid inlet hose 2 is connected to the inlet pipe 261, and one end of the second chemical liquid feed lines 330A and 330B is connected to the flow control pipes 262, And one ends of the first chemical liquid transfer lines 130A, 130B, and 130C may be connected to the branch pipes 263, respectively.

In one example, one of the flow rate control pipes 262 of the chemical liquid flow branching mechanism 260 may be configured such that the chemical liquid flows at a flow rate of 1 mL / h and the other chemical flows at a flow rate of 2 mL / h.

The first chemical liquid confluence mechanism 265 may be composed of a single confluent pipe 266 and a single branch pipe 267 branched from the confluent pipe 266 and three flow control pipes 268. The second chemical liquid confluence mechanism 365 may be composed of a single confluent pipe 366 and two branch pipes 367 branched from the confluent pipe 366.

In the first chemical liquid confluence mechanism 265, the chemical liquid outflow hose 4 is connected to the confluent pipe 266, and the flow control pipes 268 are connected to the other chemical liquid transfer lines 130A, 130B, Each end can be connected. The other ends of the second chemical liquid transfer lines 330A and 330B may be connected to the branches 367 of the second chemical liquid confluence mechanism 365, respectively.

Both ends of the confluent line 81-1 may be connected to the branch pipe 267 of the first chemical liquid confluence mechanism 265 and the confluent pipe 366 of the second chemical liquid confluence mechanism 365, respectively.

The chemical solution feeding unit 82 constituting the bolus device is provided on the merging line 81-1.

Another example of such a chemical liquid injector is that when the bolus device is not used, the second chemical liquid flow rate control device is set to the off (0 mL / h) mode and the bolus bag 83 of the chemical liquid pressure transfer unit 82 is filled with the chemical liquid Can be prevented from being influenced and stored.

When using for the purpose of pain management, if the patient feels severe pain, the push button 84 is frequently pressed to reduce the pain. Then, the drug solution may be excessively administered to the patient. In this case, if the relatively small flow rate (for example, 1 mL / h) of the chemical liquid is set in the bolus bag 83 by the second chemical liquid flow rate control device, the bolus bag 83 is filled with the chemical liquid Because the relatively long time is required, even if the patient frequently presses the push button 84, the drug solution is not additionally administered in an amount corresponding thereto, so that the drug solution can be prevented from being excessively administered to the patient.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

2: Chemical solution inlet hose 4: Chemical solution outlet hose
10A, 10B: case 20, 320: operation knob
30A, 30B, 130A, 130B, 130C, 330A, 330B: chemical liquid transfer line
31, 32: tube 40, 340: tube supporting member
50: pipeline opening / closing means 51, 52: leaf spring
54A, 55A, 54B, 55B: concave portion 60: chemical liquid branching mechanism
65, 365: chemical liquid joining mechanism 81-1: merging line
82: Chemical liquid dispensing unit

Claims (6)

A first transfer line branched from the chemical liquid inlet line and connected to the chemical liquid outlet line;
A case having a knob opening at an upper side thereof;
An operation knob provided inside the case so as to be rotatable about an axis in a vertical direction and having an upper side exposed to the outside of the case through the knob opening;
And the tubes are arranged at different heights in the vertical direction with respect to the vertical direction on one side of the outer peripheral region of the operation knob in the interior of the case, A plurality of second transfer lines that flow at different flow rates;
A chemical liquid joining mechanism for joining the chemical liquid from the second conveyance lines and a chemical liquid joining line for providing chemical liquid from the chemical liquid joining mechanism to the chemical liquid outflow line;
A chemical liquid feed unit provided on the merging line and storing the chemical liquid from the second conveyance lines and for sending the stored chemical liquid toward the chemical liquid outlet line when an external force is applied;
A tube supporting member mounted inside the case and disposed such that the tubes positioned at different heights are interposed between the tube and the operation knob, and a receiving groove portion in which the tubes are placed is extended in a direction in which the tubes are arranged;
Both of the two groove cover portions being respectively coupled to both longitudinal ends of the tube support member to cover both ends of the receiving groove portions so as to prevent the tubes placed in the receiving groove portions from being separated from each other;
The operation knob and the tubes are disposed at respective heights corresponding to the tubes and both end portions thereof are connected to the two groove cover portions and the center portion is bent convexly toward the tubes as it is in contact with the outer periphery of the operation knob A plurality of leaf springs for urging the tube on each height so that the second transfer lines are closed;
Wherein at least one of the plate springs is provided on at least one of the plate springs at an outer circumference of the operation knob, and when the operation knob is rotated to face the plate spring on the corresponding height, And at least one of the leaf springs is restrained in a convexly bent state according to the rotation angle of the operation knob By including the recesses arranged so as to be able to be maintained,
The chemical liquid flow rate from the chemical liquid confluence mechanism to the bolus bag is adjusted while both of the second transfer lines are opened or at least one of the second transfer lines is closed according to the rotation angle of the operation knob,
Wherein the tubes, the tube support member, and the leaf springs are disposed concentrically on one side of the outer peripheral region of the operation knob,
Chemical Injector. delete The method according to claim 1,
The leaf springs,
A pressing portion is projected to a central portion of the corresponding height on the side facing the tube,
And a protruding portion that is in contact with the outer periphery of the operation knob or enters the recesses in accordance with the rotation angle of the operation knob is provided on the side facing the outer periphery of the operation knob,
Chemical Injector. delete The method according to claim 1 or 3,
Further comprising rotation angle determining means for determining a position so as to rotate the operation knob between the case and the operation knob in accordance with a predetermined angle,
Chemical Injector. The method of claim 5,
The rotation angle determination means determines,
A plurality of engagement groove portions provided at the predetermined angular intervals along the circumferential direction below the operation knob;
And a locking protrusion provided on the case so as to be fitted in at least one of the locking recesses in accordance with a rotation angle of the operation knob.
Chemical Injector.

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