Infusion monitoring device

Abstract

The utility model discloses an infusion monitoring device, which relates to the technical field of infusion alarms and comprises a shell component consisting of a rear-end shell and a front-end shell, and a limiting cut-off component. By arranging the limiting cut-off assembly, when liquid in an infusion tube runs out, the capacitance value can change, the detector main board controls to be connected with an electromagnetic block power source, the electromagnetic block is powered on to generate magnetic attraction force, the magnetic attraction force of the electromagnetic block attracts the L-shaped lock catch so that the L-shaped lock catch can release limiting of the stress plate, and the stress plate can be prevented from being damaged. The stress plate and the closure block rapidly move under the elastic action of the compression spring, the closure block rapidly pops up to the interior of the infusion tube groove and extrudes the conveying tube, then closure of the conveying tube is achieved, the blood return phenomenon of the conveying tube is effectively avoided, and meanwhile the safety of the conveying tube is improved. Opening of the L-shaped limiting plate and contraction of the cut-off block can be achieved at the same time by pressing the cross-shaped unlocking button, the overall structure is simple, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of infusion alarms, in particular to an infusion monitoring device. Background Art

[0002] An infusion alarm is a device used to monitor the infusion process. It usually sounds an alarm when the infusion is completed to alert medical staff or patients.

[0003] The working principles of infusion detectors are mainly as follows:

[0004] 1. Capacitive induction detection: The infusion detector determines whether there is liquid in the tube by detecting the change in capacitance of the infusion tube. When the infusion tube is full of liquid, the capacitance value is large; when the liquid is exhausted, the capacitance value will change. The circuit inside the detector will monitor the capacitance value in real time and send an alarm signal when the liquid is missing.

[0005] 2. Transmittance or reflectance detection: Some infusion detectors may work by measuring the transmittance or reflectance of the infusion tube. When there is liquid in the tube, the transmittance or reflectance will change. The detector determines whether there is liquid by detecting these changes;

[0006] 3. Some infusion detectors may use other principles, such as pressure sensors, photoelectric sensors, etc. These detectors will detect relevant parameters during the infusion process based on different principles and issue alarms when necessary.

[0007] Most of the infusion detectors based on capacitive induction detection on the market currently have only an alarm function when in use, and do not have the function of intercepting the flow of the infusion tube. In actual use, after the infusion detector sends an alarm signal, there are cases where medical staff are too busy to come and deal with it in time. At this time, the infusion tube continues to infuse, and when the solution in the infusion tube is delivered, blood back will occur. In order to avoid this situation, an infusion monitoring device is provided. Utility Model Content

[0008] The purpose of the present invention is to provide an infusion monitoring device in order to solve the above-mentioned problems.

[0009] To achieve the above-mentioned object, the present invention provides the following technical solutions: an infusion monitoring device, comprising a shell assembly consisting of a rear end shell and a front end shell, a detector mainboard and a battery being installed on the inner side of the rear end shell, the front end shell being symmetrically installed with the rear end shell, and an infusion tube groove being formed in the middle of one end of the front end shell away from the rear end shell, a flip groove being formed on one side of the middle of the infusion tube groove of the front end shell, a horizontal limit seat being formed on one side of the bottom of the infusion tube groove of the front end shell, a limiting cutoff assembly being distributed on the inner side of the rear end shell, the front end shell and the outer side of the front end shell, the limiting cutoff assembly being used to limit the infusion tube placed inside the infusion tube groove, and at the same time realizing the cutoff operation of the infusion tube when the infusion is completed;

[0010] The position limiting and flow intercepting assembly includes a position limiting unit, a flow intercepting unit, a transmission unit and a self-locking unit;

[0011] The limiting unit is used to limit the position of the infusion tube placed inside the infusion tube groove;

[0012] The intercepting unit in the contracted state is used to not interfere with the infusion operation of the infusion tube, and the intercepting unit in the extended state is used to implement the intercepting operation of the infusion tube when the infusion is completed;

[0013] The transmission unit is used to transmit the unlocking power of the limiting unit to the intercepting unit, so as to release the interception of the infusion tube by the intercepting unit;

[0014] The self-locking unit is used to provide self-locking for the contracted state of the intercepting unit, and at the same time, the intercepting unit is released by the self-locking unit to realize the expansion and release of the intercepting unit.

[0015] As a further solution of the present invention: the limiting unit includes an L-shaped limiting plate, a cross-shaped unlocking button, a push rod, and a reset spring;

[0016] The L-shaped limiting plate is rotatably mounted on the inner side of the infusion pipe groove, and the horizontal transverse portion of the L-shaped limiting plate extends to the inner side of the infusion pipe groove, so as to limit the infusion pipe inside the infusion pipe groove;

[0017] The cross-shaped unlocking button is horizontally limited and slidably connected to one side of the rear end housing and the front end housing, the push rod is fixed to one side of the cross-shaped unlocking button, the horizontal longitudinal part of the L-shaped limiting plate is located on the inner side of the front end housing, and the side of the push rod away from the cross-shaped unlocking button is in contact with the horizontal longitudinal part of the L-shaped limiting plate. When the cross-shaped unlocking button is pressed, the push rod squeezes the horizontal longitudinal part of the L-shaped limiting plate to realize the flipping of the L-shaped limiting plate and rotates the horizontal transverse part of the L-shaped limiting plate to open;

[0018] The reset spring piece is adhesively fixed to one side of the protruding portion at the top of the cross-shaped unlocking button, and the inner side of the front end shell is fixedly connected to a first fixed block for supporting and limiting the reset spring piece. When the cross-shaped unlocking button is pressed and moved, the reset spring piece is squeezed and contracted, and the contracted reset spring piece is used to provide power for resetting the cross-shaped unlocking button.

[0019] As a further solution of the present invention: the intercepting unit includes an intercepting block, a force-bearing plate, and a compression spring;

[0020] The intercepting block is slidably connected to the inner side of the horizontal limit seat. A sliding groove is formed on the inner side of the horizontal limit seat for the intercepting block to slide horizontally, and the sliding groove extends to the other side of the inner wall of the infusion tube groove. When the intercepting block slides to the inner side of the infusion tube groove through the sliding groove, the infusion tube is squeezed and intercepted.

[0021] The force-bearing plate is distributed on the inner side of the front end shell and is fixedly connected to one end of the cut-off block. The compression spring is attached to the side of the force-bearing plate away from the cut-off block. The inner side of the front end shell is fixedly connected to a second fixed block for limiting and supporting the compression spring. The compression spring in the contracted state is used to provide thrust for the cut-off block to squeeze the infusion tube.

[0022] As a further solution of the present invention: the self-locking unit includes a fixed cylinder, an L-shaped lock, a return spring, and an electromagnetic block;

[0023] The fixed cylinder is fixed to a position near the bottom of the inner side of the rear end shell, and the L-shaped lock is slidably connected to the inner side of the fixed cylinder. The horizontal part of the L-shaped lock passes through one end of the L-shaped lock and extends to the inner side of the front end shell, and the horizontal part of the L-shaped lock is located on the moving track of the force-bearing plate. The side of the horizontal part of the L-shaped lock close to the horizontal limit seat has an arc structure;

[0024] The vertical portion of the L-shaped lock penetrates above the fixed cylinder, and the return spring is bonded and fixed between the vertical portion of the L-shaped lock and the end face of the inner wall of the rear end shell. When the intercepting block contracts and moves, the force-bearing plate squeezes the arc surface of the horizontal portion of the L-shaped lock to realize the contraction of the L-shaped lock. After the force-bearing plate passes through the horizontal portion of the L-shaped lock, the L-shaped lock is reset under the elastic force of the return spring to limit the position of the force-bearing plate.

[0025] The electromagnetic block is fixedly installed on the inner side of the fixed cylinder and protrudes to the top of the fixed cylinder. The electromagnetic block is distributed between the vertical part of the L-shaped lock and the end face of the inner wall of the rear end shell. The electromagnetic block is energized to generate magnetic attraction to adsorb and move the vertical part of the L-shaped lock, thereby realizing the release of the interception unit.

[0026] As a further solution of the present invention: the transmission unit includes a V-shaped shift block;

[0027] A fixed boss is fixedly connected to the inner side of the front end shell between the horizontal limit seat and the flip groove, and the V-shaped shift block is rotatably sleeved on the outer side of the fixed boss. The two ends of the V-shaped shift block extend to the horizontal longitudinal rotation area of ​​the L-shaped limit plate and the horizontal movement area of ​​the force plate respectively;

[0028] The L-shaped limiting plate rotates at its horizontal longitudinal position to squeeze one end of the V-shaped shift block to realize the rotation of the V-shaped shift block, and the other end of the V-shaped shift block rotates to squeeze and push the force plate to realize the backward movement and contraction of the intercepting block.

[0029] As a further solution of the present invention: a hole groove corresponding to the indicator light and control button on the detector main board is opened at one end of the front end shell away from the rear end shell, and a through groove corresponding to the sensing part on the detector main board is opened on the inner end surface of the infusion tube groove.

[0030] Compared with the prior art, the beneficial effects of the present invention are:

[0031] By setting a limit and interception component, when the liquid in the infusion tube flows out, the capacitance value will change, and the detector main board controls the power supply of the electromagnetic block, so that the electromagnetic block generates magnetic attraction when it is energized. The magnetic attraction of the electromagnetic block adsorbs the L-shaped lock to release the limit on the force plate. The force plate and the interception block move rapidly under the elastic force of the compression spring. The interception block quickly pops out into the infusion tube groove and squeezes the delivery tube, thereby realizing the interception of the delivery tube and effectively avoiding the blood backflow phenomenon in the delivery tube. At the same time, by pressing the cross-shaped unlocking button, the L-shaped limit plate can be opened and the interception block can be retracted at the same time. The overall structure is simple and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Fig. 1 It is a structural diagram of the utility model;

[0033] Fig. 2 This is a schematic diagram of the disassembly of the rear end housing and the front end housing of the present invention;

[0034] Fig. 3 Another perspective view of the rear end housing and the front end housing of the present invention being separated;

[0035] Fig. 4 This is a schematic diagram of the internal structure of the front end housing of the present invention;

[0036] Fig. 5 This is a schematic diagram of the disassembly of some parts of the position-limiting and flow-cutting assembly and the front-end housing of the present invention;

[0037] Fig. 6 It is a structural schematic diagram of the front end housing of the present utility model.

[0038] In the figure: 1. Shell assembly; 101. Rear end shell; 102. Front end shell; 103. Infusion tube slot; 104. Flip slot; 105. Horizontal limit seat; 106. First fixed block; 107. Fixed boss; 108. Second fixed block; 2. Limit and cutoff assembly; 201. L-shaped limit plate; 202. Cross-shaped unlocking button; 203. Push rod; 204. Reset spring; 205. Cutoff block; 206. Force plate; 207. Compression spring; 208. V-shaped shift block; 209. Self-locking unit; 2091. Fixed cylinder; 2092. L-shaped lock buckle; 2093. Reset spring; 2094. Electromagnetic block; 3. Detector main board; 4. Battery. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] See also Figs. 1-6 In an embodiment of the present invention, an infusion monitoring device includes a shell assembly 1 consisting of a rear end shell 101 and a front end shell 102. A detector mainboard 3 and a battery 4 are installed inside the rear end shell 101. The front end shell 102 is symmetrically installed with the rear end shell 101, and an infusion tube groove 103 is formed in the middle of the end of the front end shell 102 away from the rear end shell 101. A flip groove 104 is formed on one side of the middle of the infusion tube groove 103 of the front end shell 102. A horizontal limit seat 105 is formed on one side of the bottom of the infusion tube groove 103 of the front end shell 102. A limiting cutoff component 2 is distributed on the inner side of the rear end shell 101 and the inner side of the front end shell 102 and the outer side of the front end shell 102. The limiting cutoff component 2 is used to limit the infusion tube placed inside the infusion tube groove 103, and at the same time, realize the cutoff operation of the infusion tube when the infusion is completed.

[0041] The limiting and intercepting assembly 2 includes a limiting unit, an intercepting unit, a transmission unit and a self-locking unit 209;

[0042] The limiting unit is used to limit the infusion tube placed inside the infusion tube groove 103;

[0043] The intercepting unit in the contracted state is used to not interfere with the infusion operation of the infusion tube, and the intercepting unit in the extended state is used to realize the intercepting operation of the infusion tube when the infusion is completed;

[0044] The transmission unit is used to transmit the unlocking power of the limit unit to the interception unit, so as to release the interception of the infusion tube by the interception unit;

[0045] The self-locking unit 209 is used to provide self-locking for the contracted state of the intercepting unit, and at the same time, the intercepting unit is released by the self-locking unit 209 to realize the expansion and release of the intercepting unit;

[0046] The limiting unit includes an L-shaped limiting plate 201, a cross-shaped unlocking button 202, a push rod 203, and a reset spring 204;

[0047] The L-shaped limiting plate 201 is rotatably mounted on the inner side of the infusion tube groove 103 and the horizontal portion of the L-shaped limiting plate 201 extends to the inner side of the infusion tube groove 103 to limit the infusion tube inside the infusion tube groove 103;

[0048] The cross-shaped unlocking button 202 is horizontally limited and slidably connected to one side of the rear end housing 101 and the front end housing 102. The push rod 203 is fixed to one side of the cross-shaped unlocking button 202. The horizontal longitudinal part of the L-shaped limiting plate 201 is located on the inner side of the front end housing 102. The side of the push rod 203 away from the cross-shaped unlocking button 202 is in contact with the horizontal longitudinal part of the L-shaped limiting plate 201. When the cross-shaped unlocking button 202 is pressed, the push rod 203 squeezes the horizontal longitudinal part of the L-shaped limiting plate 201, so as to realize the flipping of the L-shaped limiting plate 201 and rotate the horizontal transverse part of the L-shaped limiting plate 201 to open.

[0049] The reset spring 204 is bonded and fixed to one side of the protruding portion of the top of the cross-shaped unlocking button 202. The inner side of the front housing 102 is fixedly connected to the first fixing block 106 for supporting and limiting the reset spring 204. When the cross-shaped unlocking button 202 is pressed and moved, the reset spring 204 is squeezed and contracted. The contracted reset spring 204 is used to provide power for resetting the cross-shaped unlocking button 202.

[0050] The intercepting unit includes an intercepting block 205, a force-bearing plate 206, and a compression spring 207;

[0051] The intercepting block 205 is slidably connected to the inner side of the horizontal limit seat 105. A sliding groove is formed on the inner side of the horizontal limit seat 105 for the intercepting block 205 to slide horizontally. The sliding groove extends to the other side of the inner wall of the infusion tube groove 103. When the intercepting block 205 slides to the inner side of the infusion tube groove 103 through the sliding groove, it squeezes and intercepts the infusion tube.

[0052] The force-bearing plate 206 is distributed on the inner side of the front end housing 102 and is fixedly connected to one end of the cut-off block 205. The compression spring 207 is attached to the side of the force-bearing plate 206 away from the cut-off block 205. The inner side of the front end housing 102 is fixedly connected to a second fixed block 108 for limiting and supporting the compression spring 207. The compression spring 207 in the contracted state is used to provide thrust for the cut-off block 205 to squeeze the infusion tube.

[0053] The self-locking unit 209 comprises a fixed cylinder 2091, an L-shaped lock 2092, a reset spring 2093 and an electromagnetic block 2094.

[0054] The fixed cylinder 2091 is fixed to the position close to the bottom of the inner side of the rear end shell 101, the L-shaped lock 2092 is slidingly connected to the inner side of the fixed cylinder 2091, the horizontal part of the L-shaped lock 2092 penetrates one end of the L-shaped lock 2092 and extends to the inner side of the front end shell 102, and the horizontal part of the L-shaped lock 2092 is located on the moving track of the stress plate 206, and the side of the horizontal part of the L-shaped lock 2092 close to the horizontal limiting seat 105 is arc-shaped.

[0055] The vertical part of the L-shaped lock 2092 penetrates to the upper side of the fixed cylinder 2091, the reset spring 2093 is adhesively fixed between the vertical part of the L-shaped lock 2092 and the end face of the inner wall of the rear end shell 101, when the cutoff block 205 is contracted and moved, the stress plate 206 extrudes the arc-shaped horizontal part of the L-shaped lock 2092 to realize the contraction of the L-shaped lock 2092, and after the stress plate 206 passes through the horizontal part of the L-shaped lock 2092, the L-shaped lock 2092 is reset under the elastic force of the reset spring 2093 to realize the limiting of the stress plate 206;

[0056] The electromagnetic block 2094 is fixedly installed on the inner side of the fixed cylinder 2091 and protrudes to the top of the fixed cylinder 2091, the electromagnetic block 2094 is distributed between the vertical part of the L-shaped lock 2092 and the end face of the inner wall of the rear end shell 101, the electromagnetic block 2094 generates magnetic attraction force when connected to electricity to adsorb and move the vertical part of the L-shaped lock 2092, so as to realize the release of the cutoff unit;

[0057] The end of the front end shell 102 away from the rear end shell 101 is provided with a hole slot corresponding to the indicator light and the control button on the detector mainboard 3, and the inner end face of the infusion tube slot 103 is provided with a through slot corresponding to the sensing part on the detector mainboard 3.

[0058] In the embodiment, it needs to be supplemented that the sensing part of the detector mainboard 3 is usually two electrodes, which contact the infusion tube through the through slot, when the infusion tube is filled with liquid, the capacitance formed by the liquid can keep the capacitance value between the electrodes stable, and when the liquid in the infusion tube gradually decreases or flows out, the capacitance value will change, so as to achieve the function of monitoring the infusion;

[0059] When the device is installed with the infusion tube, the operation steps are as follows:

[0060] By pressing the cross-shaped unlocking button 202 to retract it inward, the cross-shaped unlocking button 202 squeezes the horizontal longitudinal part of the L-shaped limiting plate 201 through the push rod 203, causing the L-shaped limiting plate 201 to rotate, and the horizontal transverse part of the L-shaped limiting plate 201 rotates away from the infusion tank 103. At this time, the infusion tube can be clamped to the outside of the infusion tube through the infusion tank 103 (it should be noted that at this time, the pressure on the cross-shaped unlocking button 202 can be released, and the cross-shaped unlocking button 202 will be reset under the elastic force of the reset spring 204, and the L-shaped limiting plate 201 remains flipped. State), then manually press and cover the horizontal transverse part of the L-shaped limiting plate 201, so that the horizontal transverse part of the L-shaped limiting plate 201 is pressed against the inner side of the infusion groove 103, thereby clamping the infusion tube, and then completing the connection between the device and the infusion tube (it should be noted that the side surface of the horizontal transverse part of the L-shaped limiting plate 201 and the inner side of the infusion groove 103 are interference fit, which can achieve the L-shaped limiting plate 201 to firmly clamp the infusion tube. In addition, the intercepting block 205 is in the retracted state by default, and its L-shaped lock buckle 2092 is in a limit locking state against the force plate 206);

[0061] Afterwards, the detector main board 3 can be started by the control button to monitor the infusion tube. When the liquid in the infusion tube is exhausted, the capacitance value will change, and the detector main board 3 will control the indicator light to flash and the alarm to sound an alarm (it should be noted that the indicator light and alarm structure are commonly used in the prior art, so they are not described in detail). At the same time, the detector main board 3 controls the power supply of the electromagnetic block 2094 to connect the electromagnetic block 2094 to generate magnetic attraction. The magnetic attraction of the electromagnetic block 2094 forms an adsorption on the L-shaped lock buckle 2092, and the L-shaped lock buckle 2092 moves to squeeze the reset spring 2093. The L-shaped lock buckle 2092 moves and separates from the force-bearing plate 206, thereby releasing the limit on the force-bearing plate 206. At this time, the force-bearing plate 206 and the intercepting block 205 move rapidly under the elastic force of the compression spring 207. The intercepting block 205 quickly pops out into the infusion tube groove 103 and squeezes the delivery tube, thereby realizing the interception of the delivery tube and effectively avoiding the blood return phenomenon in the delivery tube (it should be noted that the compression spring 207 is always in a compressed state, that is, after the intercepting block 205 pops out, the compression spring 207 still provides a thrust for the intercepting block 205, thereby ensuring the stable interception of the delivery tube).

[0062] Please refer to Figs. 2-5 , the transmission unit includes a V-shaped shift block 208;

[0063] A fixed boss 107 is fixedly connected to the inner side of the front housing 102 between the horizontal limit seat 105 and the flip groove 104. A V-shaped shift block 208 is rotatably sleeved on the outer side of the fixed boss 107. The two ends of the V-shaped shift block 208 extend to the horizontal longitudinal rotation area of ​​the L-shaped limit plate 201 and the horizontal movement area of ​​the force-bearing plate 206 respectively.

[0064] The L-shaped limiting plate 201 rotates horizontally and longitudinally to squeeze one end of the V-shaped shift block 208 to realize the rotation of the V-shaped shift block 208, and the other end of the V-shaped shift block 208 rotates to squeeze and push the force plate 206 to realize the backward movement and contraction of the intercepting block 205.

[0065] In this embodiment, when the intercepting block 205 intercepts the infusion tube, the force-bearing block 206 moves to squeeze the bottom end of the V-shaped shift block 208, causing the V-shaped shift block 208 to rotate around the fixed boss 207, and the top end of the horizontal longitudinal portion of the L-shaped limiting plate 201 rotates close to the horizontal longitudinal portion of the L-shaped limiting plate 201.

[0066] When it is necessary to remove the infusion monitoring device and the infusion tube, it is only necessary to press the cross unlocking button 202. The cross unlocking button 202 squeezes the horizontal longitudinal part of the L-shaped limit plate 201 through the push rod 203 to rotate it, thereby realizing the L-shaped limit plate 201 limiting the infusion tube. At the same time, the horizontal longitudinal part of the L-shaped limit plate 201 pushes the top end of the horizontal longitudinal part of the L-shaped limit plate 201 to rotate, so that the bottom end of the V-shaped shift block 208 rotates to squeeze the force block 206, so that the force block 206 is forced to move and squeeze the compression spring 207 to further contract, thereby realizing the contraction of the cut-off block 205, thereby releasing the squeezing of the infusion tube, and the device can be easily removed.

[0067] At the same time, during the movement of the force-bearing block 206, it will contact and squeeze the arc surface of the horizontal part of the L-shaped lock buckle 2092, causing the L-shaped lock buckle 209 to contract and squeeze the return spring 2093 to contract, so that the force-bearing block 206 can pass smoothly through the area where the horizontal part of the L-shaped lock buckle 2092 is located. When the force-bearing block 206 completely passes through the end of the horizontal part of the L-shaped lock buckle 2092, the horizontal part of the L-shaped lock buckle 2092 loses the squeezing force. At this time, the L-shaped lock buckle 2092 is reset under the elastic force of the return spring 2093, and the straight surface of the horizontal part of the L-shaped lock buckle 2092 is in contact with the force-bearing block 206, realizing the limitation of the force-bearing block 206, thereby realizing the fixation of the contracted state of the diversion block 205, which is convenient for subsequent secondary use (it should be noted that: during this operation, the electromagnetic block 2094 is in a power-off state, and the electromagnetic block 2094 has no magnetic attraction at this time).

[0068] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An infusion monitoring device, comprising a housing assembly (1) consisting of a rear end housing (101) and a front end housing (102), wherein a detector mainboard (3) and a battery (4) are mounted on the inner side of the rear end housing (101), the front end housing (102) and the rear end housing (101) are mounted symmetrically, and an infusion pipe groove (103) is formed in the middle of one end of the front end housing (102) away from the rear end housing (101), a flip groove (104) is formed on one side of the middle of the infusion pipe groove (103) of the front end housing (102), and a horizontal limit seat (105) is formed on one side of the bottom of the infusion pipe groove (103) of the front end housing (102), characterized in that: A limiting cutoff assembly (2) is distributed on the inner side of the rear end housing (101), the front end housing (102), and the outer side of the front end housing (102). The limiting cutoff assembly (2) is used to limit the position of the infusion tube placed inside the infusion tube groove (103), and to implement a cutoff operation on the infusion tube when the infusion is completed. The position-limiting and flow-cutting assembly (2) comprises a position-limiting unit, a flow-cutting unit, a transmission unit, and a self-locking unit (209); The limiting unit is used to limit the position of the infusion tube placed inside the infusion tube groove (103); The intercepting unit in the contracted state is used to not interfere with the infusion operation of the infusion tube, and the intercepting unit in the extended state is used to realize the intercepting operation of the infusion tube when the infusion is completed; The transmission unit is used to transmit the unlocking power of the limit unit to the interception unit, so that the interception unit releases the interception of the infusion tube; The self-locking unit (209) is used to provide self-locking for the contracted state of the intercepting unit, and at the same time, the intercepting unit is released by releasing the lock of the intercepting unit through the self-locking unit (209) to realize the expansion and release of the intercepting unit.

2. The infusion monitoring device according to claim 1, characterized in that: The limiting unit comprises an L-shaped limiting plate (201), a cross-shaped unlocking button (202), a push rod (203), and a reset spring (204); The L-shaped limiting plate (201) is rotatably mounted on the inner side of the infusion tube groove (103), and the horizontal transverse portion of the L-shaped limiting plate (201) extends to the inner side of the infusion tube groove (103), so as to limit the infusion tube inside the infusion tube groove (103); The cross-shaped unlocking button (202) is horizontally limited and slidably connected to one side of the rear end housing (101) and the front end housing (102); the push rod (203) is fixed to one side of the cross-shaped unlocking button (202); the horizontal longitudinal portion of the L-shaped limiting plate (201) is located inside the front end housing (102); the side of the push rod (203) away from the cross-shaped unlocking button (202) is attached to the horizontal longitudinal portion of the L-shaped limiting plate (201); when the cross-shaped unlocking button (202) is pressed, the push rod (203) squeezes the horizontal longitudinal portion of the L-shaped limiting plate (201), so as to realize the flipping of the L-shaped limiting plate (201) so that the horizontal transverse portion of the L-shaped limiting plate (201) rotates and opens; The reset spring piece (204) is bonded and fixed to one side of the protruding portion at the top of the cross-shaped unlocking button (202); the inner side of the front end housing (102) is fixedly connected with a first fixed block (106) for supporting and limiting the reset spring piece (204); when the cross-shaped unlocking button (202) is pressed and moved, the reset spring piece (204) is squeezed and contracted, and the contracted reset spring piece (204) is used to provide power for resetting the cross-shaped unlocking button (202).

3. The infusion monitoring device according to claim 2, characterized in that: The intercepting unit comprises an intercepting block (205), a force-bearing plate (206), and a compression spring (207); The intercepting block (205) is slidably connected to the inner side of the horizontal limiting seat (105), and a sliding groove for the intercepting block (205) to slide horizontally is formed on the inner side of the horizontal limiting seat (105), and the sliding groove penetrates to the other side of the inner wall of the infusion tube groove (103). When the intercepting block (205) slides to the inner side of the infusion tube groove (103) through the sliding groove, the infusion tube is squeezed and intercepted. The force-bearing plate (206) is distributed on the inner side of the front end housing (102) and is fixedly connected to one end of the cut-off block (205); the compression spring (207) is attached to the side of the force-bearing plate (206) away from the cut-off block (205); a second fixed block (108) for limiting and supporting the compression spring (207) is fixedly connected to the inner side of the front end housing (102); the compression spring (207) in a contracted state is used to provide thrust for the cut-off block (205) to squeeze the infusion tube.

4. The infusion monitoring device according to claim 3, characterized in that: The self-locking unit (209) comprises a fixed cylinder (2091), an L-shaped lock buckle (2092), a return spring (2093), and an electromagnetic block (2094); The fixed column (2091) is fixed to a position near the bottom of the inner side of the rear end housing (101), and the L-shaped lock buckle (2092) is slidably connected to the inner side of the fixed column (2091). The horizontal portion of the L-shaped lock buckle (2092) passes through one end of the L-shaped lock buckle (2092) and extends to the inner side of the front end housing (102). The horizontal portion of the L-shaped lock buckle (2092) is located on the moving track of the force-bearing plate (206), and the side of the horizontal portion of the L-shaped lock buckle (2092) close to the horizontal limit seat (105) has an arc surface structure. The vertical portion of the L-shaped lock buckle (2092) passes through the top of the fixed cylinder (2091), and the reset spring (2093) is bonded and fixed between the vertical portion of the L-shaped lock buckle (2092) and the inner wall end face of the rear end shell (101). When the intercepting block (205) contracts and moves, the force-bearing plate (206) squeezes the arc surface of the horizontal portion of the L-shaped lock buckle (2092) to realize the contraction of the L-shaped lock buckle (2092). After the force-bearing plate (206) passes through the horizontal portion of the L-shaped lock buckle (2092), the L-shaped lock buckle (2092) is reset under the elastic force of the reset spring (2093) to realize the limitation of the force-bearing plate (206); The electromagnetic block (2094) is fixedly installed on the inner side of the fixed cylinder (2091) and protrudes to the top of the fixed cylinder (2091). The electromagnetic block (2094) is distributed between the vertical part of the L-shaped lock buckle (2092) and the inner wall end face of the rear end shell (101). When the electromagnetic block (2094) is connected to electricity, it generates magnetic attraction to attract and move the vertical part of the L-shaped lock buckle (2092), thereby realizing the release of the interception unit.

5. The infusion monitoring device according to claim 3, characterized in that: The transmission unit includes a V-shaped shift block (208); A fixed boss (107) is fixedly connected to the inner side of the front end housing (102) between the horizontal limit seat (105) and the flip groove (104); the V-shaped shift block (208) is rotatably sleeved on the outer side of the fixed boss (107); and the two ends of the V-shaped shift block (208) extend to the horizontal longitudinal rotation area of ​​the L-shaped limit plate (201) and the horizontal movement area of ​​the force-bearing plate (206). The L-shaped limiting plate (201) rotates in a horizontal longitudinal position to squeeze one end of the V-shaped shifting block (208) to realize the rotation of the V-shaped shifting block (208), and the other end of the V-shaped shifting block (208) rotates to form an extrusion push on the force-bearing plate (206), so as to realize the backward movement and contraction of the intercepting block (205).

6. The infusion monitoring device according to claim 1, characterized in that: An end of the front housing (102) away from the rear housing (101) is provided with a hole slot corresponding to the indicator light and the control button on the detector main board (3), and an inner end surface of the infusion tube slot (103) is provided with a through slot corresponding to the sensing portion on the detector main board (3).

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