Liquid hose securement clamp, medical fluid monitoring device, method of assembly and method of use

Abstract

The application discloses a liquid pipeline fixing clamp, which comprises an upper stepped hole, which is divided into upper and lower hole sections by a step, a upper clamp plate is connected to the lower wall of the upper stepped hole through a bolt, the bottom surface of the upper clamp plate is concave upward and provided with front upper and rear upper grooves, a pressing shaft is arranged in the upper stepped hole, a reset spring is arranged between the upper end of the pressing shaft and the step, the lower end of the pressing shaft extends out of the upper clamp plate and is fixedly connected with a lower clamp plate, the upper surface of the lower clamp plate is provided with front lower and rear lower grooves, the front upper and front lower grooves form a front clamping hole, and the rear upper and rear lower grooves form a rear clamping hole, the diameter of the liquid hose is D, the front clamping hole and the rear clamping hole are both in the shape of an ellipse, the short axis of the two is 0.6D to 0.8D, and the long axis of the two is 1.2D to 1.6D. The application further discloses a corresponding medical liquid quantity monitor, an assembling method and a using method. The application realizes that the swing force is blocked through clamping and the influence of clamping on fluid flow is minimized, so that the influence of clamping force on the normal flow of liquid can be ignored.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a liquid volume monitoring device. BACKGROUND

[0002] In the medical field, infusion, blood transfusion and urine volume monitoring all have the need to monitor the volume of liquid, and therefore require the use of a liquid volume monitor. The liquid to be monitored needs to flow through the liquid volume monitor, which requires the liquid hose to be fixed at the liquid volume monitor. The existing fixing method is to connect the liquid hose to the liquid inlet and outlet of the liquid volume monitor in an interference fit. The defect is that the liquid hose is long and is easily affected by external forces, causing it to swing. This may cause the liquid hose and the liquid volume monitor to become loose and leak, or even cause the liquid hose to fall off the liquid volume monitor.

[0003] The applicant designed a structure that adds a pipe clamp to the medical liquid volume monitor, but found that the effect was not very good. If the clamping force of the pipe clamp is too large, it can easily clamp the liquid hose almost to the point of blocking the liquid flow, affecting its medical efficacy. If the clamping force of the pipe clamp is too small, it can not effectively constrain the swinging of the liquid hose, causing the liquid hose to leak or even come loose when it is swung by external forces. SUMMARY

[0004] The purpose of the present application is to provide a liquid hose fixing clamp that can both exert a large clamping force on the liquid hose to block the influence of the swinging of the liquid hose on the interface, and avoid excessive clamping force that can cause the liquid in the liquid hose to flow poorly.

[0005] To achieve the above-mentioned purpose, the liquid pipe fixing clamp of the present application includes an upper stepped hole provided on a mounting structure. The upper stepped hole segment above the step is an upper hole segment, and the upper stepped hole below the step is a lower hole segment. The diameter of the upper hole segment is larger than the diameter of the lower hole segment.

[0006] The lower surface of the upper stepped hole wall is provided with an upper clamp plate fixing hole. The upper clamp plate fixing hole is connected to an upper clamp plate by a bolt. The bottom surface of the upper clamp plate is recessed upward to form a front upper recess and a rear upper recess. The middle part of the upper clamp plate is provided with a central hole corresponding to the upper stepped hole.

[0007] A compression shaft is arranged in the upper stepped hole. A return spring is arranged between the upper end of the compression shaft and the step of the upper stepped hole. The lower end of the compression shaft extends downward through the central hole of the upper clamp plate and is fixedly connected to a lower clamp plate. The upper surface of the lower clamp plate is provided with a front lower recess and a rear lower recess corresponding to the front upper recess and the rear upper recess.

[0008] The lower clamping plate is tightly pressed on the upper clamping plate under the elastic force of the reset spring, the front upper groove and the front lower groove enclose a front clamping hole, and the rear upper groove and the rear lower groove enclose a rear clamping hole; the diameter of the liquid hose is D, the front clamping hole and the rear clamping hole are both in an elliptical shape, the short axis of the two is 0.6D to 0.8D, and the long axis of the two is 1.2D to 1.6D; the front clamping hole and the rear clamping hole are both used for penetrating through the liquid hose and clamping the liquid hose.

[0009] The compression shaft member comprises a compression shaft and a compression plate, the upper part of the compression shaft is provided with a threaded hole with an open top end, and the lower part of the compression shaft is provided with a threaded hole with an open bottom end;

[0010] The compression plate has a central hole, the compression plate covers the compression shaft, the upper bolt penetrates through the central hole of the compression plate and is screwed into the threaded hole at the top of the compression shaft in a downward direction, the diameter of the compression plate is larger than that of the compression shaft, the compression plate on the outer side of the compression shaft forms a top pressing part, and the reset spring is arranged between the top pressing part and the step of the upper stepped hole.

[0011] The middle part of the lower clamping plate is provided with a central hole corresponding to the compression shaft, and the lower part of the lower clamping plate is provided with a handle for pulling the compression shaft member downward by hand, and the handle is provided with a lower stepped hole penetrating upward and downward.

[0012] The bottom part of the compression shaft is provided with a lower threaded hole, the lower stepped hole and the central hole of the lower clamping plate are provided with a lower bolt, the lower bolt is screwed into the lower threaded hole in an upward direction, and the head of the lower bolt is tightly pressed on the step of the lower stepped hole and fixes the handle on the bottom surface of the lower clamping plate.

[0013] The upper clamping plates on the left and right sides of the upper stepped hole are fixedly connected with the upper clamping plate fixed hole 4 through the left bolt and the right bolt through threaded cooperation.

[0014] The application further discloses a medical liquid quantity monitor comprising a shell body and adopting the liquid pipeline fixing clamp.

[0015] The application further discloses an assembling method of the liquid pipeline fixing clamp, which is performed according to the following steps.

[0016] The first step is to install the upper clamping plate, the left bolt and the right bolt are penetrated through the upper clamping plate and screwed into the corresponding threaded holes in the hole wall of the upper stepped hole in an upward direction, the left bolt and the right bolt are screwed tightly, and the upper clamping plate is tightly fixed on the hole wall of the upper stepped hole;

[0017] The second step is to assemble the compression shaft, the lower clamping plate and the handle, the lower end of the compression shaft is inserted into the central hole of the lower clamping plate, and the two are temporarily fixed by friction force, the lower stepped hole of the handle is aligned with the central hole of the lower clamping plate from the bottom to the top, the lower bolt is penetrated into the lower stepped hole of the handle from the bottom to the top and screwed into the threaded hole at the lower part of the compression shaft, the lower bolt is screwed tightly, the bolt head of the lower bolt tightly fixes the handle on the bottom surface of the lower clamping plate through the step of the lower stepped hole, and the compression shaft, the lower clamping plate and the handle are fixed together.

[0018] The third step is to install the compression shaft into the upper stepped hole and assemble the return spring;

[0019] The compression shaft is inserted into the upper stepped hole from the bottom to the top, the return spring is put into the upper stepped hole from the top to the bottom and is sleeved on the compression shaft, the bottom end of the return spring is pressed on the step of the upper stepped hole, then the pressing plate is placed on the top end of the compression shaft, the upper bolt passes through the center hole of the pressing plate and is screwed with the threaded hole at the top of the compression shaft, the upper bolt tightly fixes the pressing plate on the top of the compression shaft, the top pressing part of the pressing plate limits the return spring between the top pressing part and the step of the upper stepped hole, and the assembly process is completed.

[0020] The application also discloses a use method of the liquid pipeline fixing clamp, which is performed according to the following steps:

[0021] The first step is to install the liquid hoses; two liquid hoses are connected with the liquid inlet and the liquid outlet of the medical liquid quantity monitor respectively;

[0022] The second step is to clamp the liquid hoses;

[0023] Specifically, one hand of the user pulls down the handle, the handle drives the lower pressing plate, the compression shaft and the pressing plate to move downwards, and in this process, the return spring is compressed by the pressing plate; after the lower pressing plate moves downwards and leaves the upper pressing plate, the other hand of the user places the two liquid hoses between the front upper groove and the front lower groove and between the rear upper groove and the rear lower groove respectively; then the handle is released, the return spring drives the pressing plate, the compression shaft and the lower pressing plate to move upwards, so that the lower pressing plate is tightly pressed on the upper pressing plate, at this time, the front upper groove and the front lower groove form the front clamping hole, the rear upper groove and the rear lower groove form the rear clamping hole, and the two liquid hoses are tightly pressed in the front clamping hole and the rear clamping hole respectively;

[0024] The third step is that after the liquid delivery task is completed, one hand of the user pulls down the handle to separate the upper pressing plate and the lower pressing plate, and the other hand of the user takes out the two liquid hoses from between the upper pressing plate and the lower pressing plate and separates the two liquid hoses from the liquid inlet and the liquid outlet of the medical liquid quantity monitor, and the use process is completed.

[0025] The application has the following advantages:

[0026] The liquid hoses connected with the medical liquid quantity monitor include the liquid inlet hose and the liquid outlet hose, the front clamping hole and the rear clamping hole correspond to the liquid inlet hose and the liquid outlet hose one by one; the front clamping hole and the rear clamping hole are collectively referred to as the clamping hole;

[0027] When the liquid hose passes through the clamping hole, it is clamped between the upper clamping plate and the lower clamping plate, and the clamping force is the elastic force of the spring, so that the clamping hole can be clamped tightly enough to block the swing of the end of the clamping hole away from the medical liquid quantity monitor (the liquid hose outside this end is easily disturbed by external force, such as when the liquid hose is touched when the quilt is lifted), so as to not affect the end of the liquid hose connected to the interface of the medical liquid quantity monitor, thereby preventing the liquid hose from being affected by external force and causing leakage or even falling off at the interface with the medical liquid quantity monitor. At the same time, the maximum contraction of the front clamping hole and the rear clamping hole is 0.6D to 0.8D (reduced flow area), which avoids blocking the flow of liquid in the liquid hose; at the same time, when the liquid hose is clamped in the clamping hole, the major axis of the clamping hole is 1.2D to 1.6D, thereby providing space for the liquid hose to stretch and deform in the major axis direction, so that the liquid hose does not shrink to a diameter of 0.6D to 0.8D, but forms an oval shape, and the liquid hose is in an expanded state in the major axis direction of the clamping hole (increased flow area), so that the liquid hose has a smaller flow area after being clamped, so that the present application provides a larger flow area while providing sufficient pressure on the liquid hose, so that the influence of the clamping force on the liquid flow is minimized, and the influence of the clamping force on the normal flow of the liquid can be ignored.

[0028] The compression shaft has a simple structure and is convenient to install at the mounting structure and to provide upward compression reset function to the lower clamping plate.

[0029] The handle is provided to facilitate the operation of pulling down the lower clamping plate and loading the liquid hose into the clamping hole (the front clamping hole and the rear clamping hole).

[0030] The components of the present application are reasonably divided, the structure is convenient to assemble, and the assembly process is simple and convenient.

[0031] The use process of the present application is very simple, and one person can operate without the cooperation of two people. It is convenient for nurses to operate the handle with one hand and the liquid hose with the other hand, and it is convenient and reliable to prevent the liquid hose from swinging to cause loosening or even falling off of the interface with the medical liquid quantity monitor, and to not significantly affect the flow of liquid. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a front view structural schematic diagram of the medical liquid quantity monitor of the present application;

[0033] Figure 2 is Figure 1 B-B sectional view of

[0034] Figure 3is a schematic diagram of a three-dimensional structure of a medical liquid quantity monitor;

[0035] Figure 4 is Figure 1 a top view;

[0036] Figure 5 is Figure 4 a C-C sectional view of

[0037] Figure 6 is Figure 2 an enlarged view of A in

[0038] Figure 7 is Figure 5 an enlarged view of B in DETAILED DESCRIPTION

[0039] As shown in Figures 1 to 7 , the liquid pipeline fixing clamp of the present application comprises an upper stepped hole 2 arranged on a mounting structure 1, the upper stepped hole 2 segment above a step 3 (here, the step specifically refers to the step of the upper stepped hole 2) is an upper hole segment, and the upper stepped hole 2 below the step 3 is a lower hole segment; the diameter of the upper hole segment is greater than the diameter of the lower hole segment;

[0040] The lower surface of the hole wall of the upper stepped hole 2 is concave upward to provide an upper clamp plate fixing hole 4, the upper clamp plate fixing hole 4 is connected with an upper clamp plate 5 through a bolt (i.e. left bolt 18 and right bolt 19 hereinafter), the bottom surface of the upper clamp plate 5 is concave upward to provide a front upper groove 6 and a rear upper groove 7; the middle part of the upper clamp plate 5 is provided with a center hole corresponding to the upper stepped hole 2;

[0041] A compression shaft member is arranged in the upper stepped hole 2, a return spring 10 is arranged between the upper end of the compression shaft member and the step of the upper stepped hole 2, the lower end of the compression shaft member extends downward through the center hole of the upper clamp plate 5 and is fixedly connected with a lower clamp plate 11, and the upper surface of the lower clamp plate 11 is provided with a front lower groove 8 and a rear lower groove 9 corresponding to the front upper groove 6 and the rear upper groove 7;

[0042] The lower clamp plate 11 is tightly pressed on the upper clamp plate 5 under the elastic force of the return spring 10, the front upper groove 6 and the front lower groove 8 enclose a front clamping hole, and the rear upper groove 7 and the rear lower groove 9 enclose a rear clamping hole; the diameter of the liquid hose is D millimeters, the front clamping hole and the rear clamping hole are both in an elliptical shape, and the minor axis (here, the minor axis and the major axis refer to the minor axis and the major axis of the elliptical geometric shape) of both is 0.6D to 0.8D, and the major axis of both is 1.2D to 1.6D; the front clamping hole and the rear clamping hole are both used for penetrating through the liquid hose and clamping the liquid hose.

[0043] The liquid hose connected with the medical liquid quantity monitor comprises an inlet liquid hose and an outlet liquid hose, and the front clamping hole and the rear clamping hole correspond to the inlet liquid hose and the outlet liquid hose one by one; the front clamping hole and the rear clamping hole are collectively referred to as a clamping hole;

[0044] When the liquid hose passes through the clamping hole, it is clamped between the upper clamping plate 5 and the lower clamping plate 11, and the clamping force is the elastic force of the spring, so it can be clamped tightly enough to block the swing of the end of the clamping hole away from the medical liquid quantity monitor (the liquid hose at this end is easily disturbed by external force, such as when the liquid hose is touched when the bedclothes is lifted), which cannot affect the end of the liquid hose connected to the interface of the medical liquid quantity monitor, thereby preventing the liquid hose from being affected by external force and causing leakage or even falling off at the interface with the medical liquid quantity monitor. At the same time, the maximum contraction of the front and rear clamping holes is 0.6D to 0.8D (reduced flow area), which avoids blocking the flow of liquid in the liquid hose; at the same time, when the liquid hose is clamped in the clamping hole, the major axis of the clamping hole is 1.2D to 1.6D, thereby providing space for the liquid hose to stretch and deform in the major axis direction, so that the liquid hose does not shrink to a diameter of 0.6D to 0.8D, but forms an oval shape, and the liquid hose is in an expanded state (increased flow area) in the major axis direction of the clamping hole, so that the flow area of the liquid hose is reduced less after being clamped, so that the present application provides the largest possible flow area while providing sufficient pressure on the liquid hose, so that the influence of the clamping force on the liquid flow is minimized, achieving both blocking the swing force (preventing the liquid hose from loosening or even falling off from the interface of the medical liquid quantity monitor) and minimizing the influence of clamping on fluid flow, so that the influence of the clamping force on the normal flow of the liquid can be ignored.

[0045] The compression shaft member includes a compression shaft 12 and a compression plate 13, the upper part of the compression shaft 12 is provided with a threaded hole with an open top, and the lower part of the compression shaft 12 is provided with a threaded hole with an open bottom;

[0046] The compression plate 13 has a central hole, the compression plate 13 covers the compression shaft 12, the upper bolt 14 passes through the central hole of the compression plate 13 downwardly and is threadedly connected with the threaded hole at the top of the compression shaft 12, the diameter of the compression plate 13 is larger than that of the compression shaft 12, the compression plate 13 on the outer side of the compression shaft 12 forms a top pressing part, the top pressing part serves as the upper end of the compression shaft 12, and the reset spring 10 is arranged between the top pressing part and the step of the upper step hole 2. The compression shaft 12 has a simple structure and is convenient to install at the mounting structure 1 and forms an upward pressing reset function for the lower clamping plate 11.

[0047] The middle part of the lower clamping plate 11 is provided with a central hole corresponding to the compression shaft 12, and the lower part of the lower clamping plate 11 is provided with a handle 15 for pulling the compression shaft 12 downwardly by hand, and the handle 15 is internally provided with a lower step hole 16 which is vertically penetrable;

[0048] The bottom of the compression shaft 12 is provided with a lower threaded hole, the lower stepped hole 16 and the central hole of the lower clamping plate 11 are provided with a lower bolt 17, the lower bolt 17 is screwed into the lower threaded hole upwards, the head of the lower bolt 17 is tightly pressed on the step of the lower stepped hole 16 and the handle 15 is fixed on the bottom surface of the lower clamping plate 11.

[0049] The handle 15 is arranged, which is more convenient for the operation of pulling the lower clamping plate 11 downwards and loading the liquid hose into the clamping hole (the front clamping hole and the rear clamping hole).

[0050] The upper clamping plate 5 on the left and right sides of the upper stepped hole 2 is fixedly connected with the upper clamping plate fixed hole 4 through the left bolt 18 and the right bolt 19 through threaded cooperation respectively.

[0051] The fixing structure of the upper clamping plate 5 is very convenient for assembly.

[0052] The application further discloses a medical liquid quantity monitor (such as a urine quantity monitor) corresponding to the liquid pipeline fixing clamp, which comprises a shell, and the mounting structure 1 is the shell of the liquid quantity monitor.

[0053] The application further discloses an assembly method of the liquid pipeline fixing clamp, which is performed according to the following steps.

[0054] The first step is to install the upper clamping plate 5; the left bolt 18 and the right bolt 19 are inserted into the corresponding threaded holes in the hole wall of the upper stepped hole 2 upwards through the upper clamping plate 5 and are screwed, the left bolt 18 and the right bolt 19 are screwed tightly, and the upper clamping plate 5 is tightly pressed and fixed on the hole wall of the upper stepped hole 2;

[0055] The second step is to assemble the compression shaft 12, the lower clamping plate 11 and the handle 15; the lower end of the compression shaft 12 is inserted into the central hole of the lower clamping plate 11, and the two are temporarily fixed by friction; the lower stepped hole 16 of the handle 15 is aligned with the central hole of the lower clamping plate 11 from below to above, the lower bolt 17 is inserted into the lower stepped hole 16 of the handle 15 from below to above and is screwed into the threaded hole in the lower part of the compression shaft 12, the lower bolt 17 is screwed tightly, the bolt head of the lower bolt 17 tightly presses and fixes the handle 15 on the bottom surface of the lower clamping plate 11, and the compression shaft 12, the lower clamping plate 11 and the handle 15 are fixed together;

[0056] The third step is to load the compression shaft 12 into the upper stepped hole 2 and assemble the reset spring 10.

[0057] Insert the compression shaft 12 from bottom to top through the upper clamping plate 5 into the upper step hole 2; open the shell of the medical liquid quantity monitor, and put the reset spring 10 into the upper step hole 2 from top to bottom and wrap it on the compression shaft 12, the bottom end of the reset spring 10 is pressed on the step of the upper step hole 2; then cover the pressing plate 13 on the top end of the compression shaft 12, and make the upper bolt 14 pass through the center hole of the pressing plate 13 and downwardly threadedly engage with the threaded hole at the top of the compression shaft 12, the upper bolt 14 tightly fixes the pressing plate 13 on the top of the compression shaft 12, and the top pressing part of the pressing plate 13 limits the reset spring 10 between the top pressing part and the step of the upper step hole 2, and the assembling process is completed.

[0058] The components of the present application are reasonably divided, the structure is convenient to assemble, and the assembling process is simple and convenient. The present application also discloses a use method of the liquid pipeline fixing clamp, which is performed according to the following steps:

[0059] The first step is to install the liquid hose; two liquid hoses are connected with the liquid inlet and the liquid outlet of the medical liquid quantity monitor respectively;

[0060] The second step is to clamp the liquid hose;

[0061] Specifically, one hand of the user pulls down the handle 15, the handle 15 drives the lower pressing plate, the compression shaft 12 and the pressing plate 13 to move downward, and in this process, the reset spring 10 is compressed by the pressing plate 13; after the lower pressing plate moves downward and leaves the upper pressing plate, the other hand of the user places the two liquid hoses between the front upper groove 6 and the front lower groove 8, and between the rear upper groove 7 and the rear lower groove 9 respectively; then the handle 15 is released, the reset spring 10 drives the pressing plate 13, the compression shaft 12 and the lower pressing plate to move upward, so that the lower pressing plate tightly presses on the upper pressing plate, at this time, the front upper groove 6 and the front lower groove 8 form a front clamping hole, the rear upper groove 7 and the rear lower groove 9 form a rear clamping hole, and the two liquid hoses are tightly pressed in the front clamping hole and the rear clamping hole respectively;

[0062] The third step is that after the liquid delivery task is completed, one hand of the user pulls down the handle 15 to separate the upper pressing plate and the lower pressing plate, and the other hand of the user takes out the two liquid hoses from between the upper pressing plate and the lower pressing plate, and separates the two liquid hoses from the liquid inlet and the liquid outlet of the medical liquid quantity monitor, and the use process is completed.

[0063] The use process of the present application is very simple, and one person can operate it without the cooperation of two people, which is convenient for the nurse to operate the handle 15 with one hand and the liquid hose with the other hand, and reliably prevents the liquid hose from swinging to cause the interface of the medical liquid quantity monitor to loosen or even fall off, without obviously affecting the liquid flow.

[0064] The above examples are only used to illustrate but not to limit the technical solutions of the present application. Although the present application is described in detail with reference to the above examples, those skilled in the art should understand that the present application can be modified or equivalently replaced without departing from the spirit and scope of the present application, and any modification or partial replacement should be covered in the scope of claims of the present application.

Claims

1. A liquid line set retaining clip, characterized by: The upper stepped hole includes an upper hole section above the step and a lower hole section below the step, and the diameter of the upper hole section is larger than that of the lower hole section; A lower surface of a hole wall of the upper stepped hole is provided with an upper clamping plate fixing hole, and the upper clamping plate fixing hole is connected with an upper clamping plate through a bolt; A compression shaft is arranged in the upper stepped hole, and a reset spring is arranged between an upper end of the compression shaft and the step of the upper stepped hole; A lower end of the compression shaft extends downward through a central hole of the upper clamping plate and is fixedly connected with a lower clamping plate, and an upper surface of the lower clamping plate is provided with a front lower groove and a rear lower groove corresponding to the front upper groove and the rear upper groove; 2. The liquid line set clamp of claim 1, wherein: The lower clamping plate is tightly pressed on the upper clamping plate under the elastic force of the reset spring, and the front upper groove and the front lower groove form a front clamping hole, and the rear upper groove and the rear lower groove form a rear clamping hole; The diameter of the liquid hose is D, the front clamping hole and the rear clamping hole are both elliptical, the short axis of each of the front clamping hole and the rear clamping hole is 0.6D to 0.8D, and the long axis of each of the front clamping hole and the rear clamping hole is 1.2D to 1.6D, the front clamping hole and the rear clamping hole are used for passing through the liquid hose and clamping the liquid hose, and provide a space for the liquid hose to stretch and deform in the long axis direction, so that the liquid hose is not contracted into a circle with a diameter of 0.6D to 0.8D, and the liquid hose is in an expanded state in the long axis direction of the clamping hole, so that the flow area of the liquid hose is reduced less after being clamped.

3. The liquid line set clamp of claim 2, wherein: The compression shaft includes a compression shaft and a pressing piece, an upper portion of the compression shaft is provided with a threaded hole with an open top end, and a lower portion of the compression shaft is provided with a threaded hole with an open bottom end; The pressing piece has a central hole, the pressing piece covers the compression shaft, an upper bolt passes through the central hole of the pressing piece and is screwed into the threaded hole at the top of the compression shaft, the diameter of the pressing piece is larger than that of the compression shaft, and the pressing piece on the outer side of the compression shaft forms a top pressing portion, and the reset spring is arranged between the top pressing portion and the step of the upper stepped hole.

4. The liquid line set clamp of any one of claims 1 to 3, wherein: A central hole is arranged in the middle of the lower clamping plate corresponding to the compression shaft, and a handle is arranged below the lower clamping plate for pulling the compression shaft downward by hand, and the handle is provided with a lower stepped hole penetrating upward and downward; 5. A medical fluid monitoring apparatus comprising a housing, a fluid line securing clamp as claimed in claim 4, characterised in that: The bottom of the compression shaft is provided with a lower threaded hole, and the lower stepped hole and the central hole of the lower clamping plate are provided with a lower bolt, the lower bolt is screwed into the lower threaded hole upward, and the head of the lower bolt is tightly pressed on the step of the lower stepped hole and fixes the handle on the bottom surface of the lower clamping plate.

6. A method of assembling a liquid line set clamp according to any one of claims 1 to 3, characterised in that The upper clamping plates on the left and right sides of the upper stepped hole are fixedly connected with the upper clamping plate fixing hole through the left bolt and the right bolt through threaded connection. The mounting structure is a housing of a liquid quantity monitor. The following steps are performed: The first step is to install the upper clamping plate; the left bolt and the right bolt pass through the upper clamping plate upward and are screwed into the corresponding threaded holes in the hole wall of the upper stepped hole, the left bolt and the right bolt are tightened, and the upper clamping plate is tightly fixed on the hole wall of the upper stepped hole; The second step is to assemble the compression shaft, the lower clamping plate and the handle; the lower end of the compression shaft is inserted into the center hole of the lower clamping plate, and the two are temporarily fixed by friction; the lower stepped hole of the handle is aligned with the center hole of the lower clamping plate from bottom to top, the lower bolt is inserted into the lower stepped hole of the handle from bottom to top and screwed into the threaded hole at the lower part of the compression shaft, the lower bolt is tightened, the head of the lower bolt is pressed against the bottom surface of the lower clamping plate through the step of the lower stepped hole, so that the compression shaft, the lower clamping plate and the handle are fixed together; The third step is to assemble the reset spring; The compression shaft is inserted into the upper stepped hole from bottom to top through the upper clamping plate; the reset spring is put into the upper stepped hole from top to bottom and wrapped around the compression shaft, and the bottom end of the reset spring is pressed against the step of the upper stepped hole; then the pressing piece is placed on the top end of the compression shaft, the upper bolt is inserted through the center hole of the pressing piece and downwardly screwed into the threaded hole at the top of the compression shaft, the upper bolt tightly fixes the pressing piece on the top of the compression shaft, and the top pressing part of the pressing piece limits the reset spring between the top pressing part and the step of the upper stepped hole, completing the assembly process.

7. A method of using a liquid line set clamp according to any one of claims 1 to 3, characterized in that The following steps are taken: The first step is to install the liquid hoses; two liquid hoses are connected to the liquid inlet and outlet of the medical liquid quantity monitor respectively; The second step is to clamp the liquid hoses; Specifically, one hand of the user pulls down the handle, the handle drives the lower pressing plate, the compression shaft and the pressing piece to move downward, and in this process, the reset spring is compressed by the pressing piece; after the lower pressing plate moves downward and away from the upper pressing plate, the other hand of the user places the two liquid hoses between the front upper groove and the front lower groove, and between the rear upper groove and the rear lower groove; then the handle is released, the reset spring drives the pressing piece, the compression shaft and the lower pressing plate to move upward, so that the lower pressing plate is tightly pressed on the upper pressing plate, at this time, the front upper groove and the front lower groove form a front clamping hole, and the rear upper groove and the rear lower groove form a rear clamping hole, and the two liquid hoses are tightly pressed in the front clamping hole and the rear clamping hole respectively; The third step is that after the liquid delivery task is completed, one hand of the user pulls down the handle to separate the upper pressing plate and the lower pressing plate, and the other hand of the user takes out the two liquid hoses from between the upper pressing plate and the lower pressing plate, and separates the two liquid hoses from the liquid inlet and outlet of the medical liquid quantity monitor, completing the use process.

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