CN109036062A - A kind of vasopressors simulation system - Google Patents

Abstract

The invention discloses a blood vessel pressurization simulation system, which includes a pressurization system, a soft rubber tube, a blood vessel and a bracket. The pressurization system includes a fixed press plate, a movable press plate, a push-pull electromagnet, a spring and a limit mechanism, and the fixed press plate and the movable press plate The left and right are opposite, the fixed pressure plate is fixed on the bracket, the movable pressure plate is fixed on the traction bar at the left end of the push-pull electromagnet, the push-pull electromagnet is slidingly connected with the bracket, the push-pull electromagnet can slide left and right, and the spring is fixed on the right end of the pull-type electromagnet Between the moving iron core and the limiting mechanism, the spring is in a state of natural elongation, the limiting mechanism is fixed on the bracket, and the soft rubber tube is pressed between the fixed pressing plate and the movable pressing plate; the invention imitates blood through liquid to fill it with Blood vessels and soft rubber tubes; through the left and right relative movement of the fixed platen and the movable platen, pressure is applied to the soft rubber tubes, and the blood vessels pressurize the environment.

Description

A vasopressor simulation system

technical field

The invention belongs to the technical field of medical equipment, and in particular relates to a blood vessel pressurization simulation system.

Background technique

In the field of drug research and development, in vitro blood vessel experiments are often used to study the effects of drugs entering blood vessels. However, in the current marketed drug equipment for research on blood vessels, high-level water columns are generally used to apply static pressure, and the vascular pressurized environment , and the size of the static pressure cannot be adjusted; in reality, the pressurized environment of the blood vessel itself is formed by diastolic pressure and systolic pressure, and the environment is complex. Therefore, the pressurized environment of the blood vessel with only static pressure is different from the actual situation in the body Larger, the reliability of the research results is greatly reduced.

Contents of the invention

In view of this, the purpose of the present invention is to provide a blood vessel pressurization simulation system, which simulates diastolic pressure through elastic retraction of springs and simulates systolic pressure through electromagnetic attraction, so that the simulated blood vessel pressurization environment matches the actual situation.

In order to achieve the above object, a blood vessel pressurization simulation system of the present invention includes a pressurization system, a soft rubber tube, a blood vessel and a bracket. Opposite to the left and right of the movable pressure plate, the fixed pressure plate is fixed on the bracket, the movable pressure plate is fixed on the traction bar at the left end of the push-pull electromagnet, the push-pull type electromagnet is slidingly connected with the bracket, the push-pull type electromagnet can slide left and right, and the spring is fixed on the pull type Between the moving iron core at the right end of the electromagnet and the limit mechanism, the spring is in a state of natural elongation, the limit mechanism is fixed on the bracket, the soft rubber tube is pressed between the fixed pressure plate and the movable pressure plate, and the two ends of the blood vessel are connected with the soft rubber tube respectively. The lower end communicates and forms a loop, and the blood vessels and soft rubber tubes are filled with liquid.

Further, the limit mechanism includes a fixed cylinder and a moving rod, the fixed cylinder is fixed on the bracket, the left end of the moving rod is movably connected with the fixed cylinder and can move left and right along the fixed cylinder, and the right end of the spring is movably fitted in the fixed cylinder and fixed on the moving rod On the left end, the left end of the spring is fixed on the right end of the moving iron core.

Further, the surface of the left end of the moving rod is provided with an external thread, and the surface of the fixed cylinder is provided with an internal thread matching the thread of the external thread.

Further, the pressurization system also includes limit rods. There are two limit rods and they are respectively arranged on the front and rear sides of the soft rubber hose. There is a gap between the limit rods and the soft rubber hose to allow the deformation of the soft rubber hose. On the fixed platen, the right end of the limit rod moves through the through hole provided on the surface of the movable platen.

Further, the bracket is provided with a chute extending in the left-right direction, a slider is slidably connected to the chute, and the lower end of the slider passes through the chute and is fixed to the upper end of the push-pull electromagnet.

Further, it also includes a metal pipe, a valve and a funnel. The lower end of the funnel is a mouth, and the upper end of the soft rubber tube communicates with the mouth through a metal pipe. A valve for controlling the on-off of the metal pipe is installed on the metal pipe, and the metal pipe is fixed on the bracket.

Further, it also includes a pagoda joint and an "eight" shaped needle tube. The upper end of the "eight" shaped needle tube has a main interface, and the lower end of the "eight" shaped needle tube has two side-by-side branch interfaces. The lower end of the soft rubber tube communicates with the main interface through the pagoda joint. The sub-ports communicate with the two ends of the blood vessel respectively.

The beneficial effects of the present invention are:

1. The vascular pressurization simulation system of the present invention highly restores the actual environment of vascular pressurization; the liquid simulates blood to fill the blood vessels and soft rubber tubes; through the left-right relative movement of the fixed platen and the movable platen, pressure is applied to the soft rubber tubes , through the fluidity of the liquid, the pressure is transmitted to the blood vessel, and the blood vessel pressurizes the environment; the pressurization principle is specifically that when the heart relaxes, the pressure generated by the elastic retraction of the arterial blood vessel is the diastolic pressure. Here, through the elasticity of the spring The retraction simulates the diastolic pressure; through the current control of the push-pull electromagnet, the traction rod pushes the movable platen to move to the fixed platen, and the pressure of the soft rubber tube increases to simulate the systolic pressure; in addition, the push-pull electromagnet adopts the principle of electromagnetic attraction, its high sensitivity.

2. A blood vessel pressurization simulation system of the present invention further improves the authenticity of the simulation; since the moving rod can move left and right along the fixed cylinder, the moving rod drives the push-pull electromagnet to move through the spring, thereby changing the relative relationship between the fixed pressing plate and the movable pressing plate. Adjust the distance between the fixed platen and the movable platen to squeeze the soft hose, so as to adjust the systolic pressure.

3. A vascular pressurization simulation system of the present invention can limit the range of motion of the soft rubber hose; during the process of the traction rod pushing the movable platen to the fixed platen, the front and rear movement of the soft rubber hose is limited by the limit rod to avoid deviation of the soft rubber hose, thereby ensuring The pressure soft hose is pressed between the fixed platen and the movable platen to ensure the stability of the simulation process.

Description of drawings

In order to make the purpose, technical scheme and beneficial effect of the present invention clearer, the present invention provides the following drawings for illustration:

Fig. 1 is a perspective view of a vascular pressurization simulation system of the present invention;

Fig. 2 is the enlarged schematic diagram of the structure at B in Fig. 1;

Fig. 3 is a top view of a vascular pressurization simulation system of the present invention;

Fig. 4 is a cross-sectional view at A-A in Fig. 3 .

Reference signs: 1-pressurization system; 2-soft rubber tube; 3-blood vessel; 4-stent; 5-metal tube; 6-valve; 7-funnel; 8-pagoda joint; -fixed pressure plate; 12-movable pressure plate; 13-push-pull electromagnet; 14-spring; 15-limit mechanism; 16-limit rod; 41-chute; pole.

Detailed ways

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in Figures 1 to 4; a blood vessel pressurization simulation system of the present invention includes a pressurization system 1, a soft rubber tube 2, a blood vessel 3 and a bracket 4; the pressurization system 1 includes a fixed platen 11, a movable platen 12, a push-pull Electromagnet 13, spring 14 and limit mechanism 15; Fixed pressing plate 11 is relative to movable pressing plate 12 left and right; Fixed pressing plate 11 is fixed on the support 4; Movable pressing plate 12 is fixed on the draw bar that push-pull type electromagnet 13 left ends have; Push-pull type The electromagnet 13 is slidably connected with the support 4, and the push-pull electromagnet 13 can slide left and right. Specifically, the support 4 is provided with a chute 41 extending in the left-right direction, and a sliding part 42 is slidably connected in the chute 41. The lower end of the sliding part 42 Pass through the chute 41 and be fixed on the upper end of the push-pull electromagnet 13; the spring 14 is fixed between the moving iron core at the right end of the pull electromagnet and the limit mechanism 15, and the spring 14 is in a state of natural elongation; the limit mechanism 15 is fixed on On the bracket 4; the soft rubber tube 2 is pressed between the fixed platen 11 and the movable platen 12; the two ends of the blood vessel 3 communicate with the lower end of the soft rubber tube 2 respectively and form a circuit, and the blood vessel 3 and the soft rubber tube 2 are filled with liquid; here, adjacent The fixing between parts is realized by bolt connection, which is one of the commonly used fixed connection methods, and will not be repeated here; in addition, the push-pull electromagnet 13 uses the leakage flux principle of the spiral tube, and uses the moving iron core and the static iron core The long-distance pull-in realizes the linear reciprocating motion of the drawbar, which will not be repeated here.

The blood vessel 3 and the soft rubber tube 2 are filled with liquid to simulate blood; the specific process of the pressurized environment of the blood vessel 3 is as follows: through the current control of the push-pull electromagnet 13, the traction bar pushes the movable platen 12 to move to the fixed platen 11, and the soft rubber tube 2 is squeezed and becomes larger, resulting in a larger deformation of the soft rubber hose 2. When the deformation reaches the maximum, the pressure generated by the liquid on the wall of the soft rubber hose 2 simulates the systolic pressure; due to the synchronous movement of the moving iron core and the drawbar, the spring 14 Stretching, under the elastic force of the spring 14, the spring 14 retracts, the relative distance between the movable platen 12 and the fixed platen 11 becomes larger, the extrusion force on the soft rubber tube 2 becomes smaller, and the deformation of the soft rubber tube 2 decreases. At this time, the pressure generated by the liquid on the wall of the soft rubber tube 2 simulates the diastolic pressure; through the fluidity of the liquid, the systolic pressure and the diastolic pressure are transmitted to the blood vessel 3, and the blood vessel 3 pressurizes the environment.

Preferably, the limit mechanism 15 includes a fixed cylinder 151 and a moving rod 152, the fixed cylinder 151 is fixed on the bracket 4, the left end of the moving rod 152 is movably connected with the fixed cylinder 151 and can move left and right along the fixed cylinder 151, and the right end of the spring 14 is movably sleeved on the The fixed cylinder 151 is fixed on the left end of the moving rod 152, and the left end of the spring 14 is fixed on the right end of the moving iron core; Relative distance, adjust the extrusion force of the fixed platen 11 and the movable platen 12 on the soft rubber tube 2; when the push-pull electromagnet 13 works, the maximum deformation of the soft rubber tube 2 changes, and at this time, the simulated systolic pressure occurs Variety.

On this basis, the surface of the left end of the moving rod 152 is provided with an external thread, and the surface of the fixed cylinder 151 is provided with an internal thread matching the external thread. A screw transmission is performed between the moving rod 152 and the fixed cylinder 151, which will not be repeated here.

Preferably, the pressurization system 1 further includes a limit rod 16, two limit rods 16 are respectively arranged on the front and rear sides of the soft rubber hose 2, and there is a gap between the limit rod 16 and the soft rubber hose 2 that allows the soft rubber hose 2 to deform The left end of the limit rod 16 is fixed on the fixed platen 11, and the right end of the limit rod 16 moves through the through hole provided on the surface of the movable platen 12.

Preferably, this embodiment also includes a metal pipe 5, a valve 6 and a funnel 7, the lower end of the funnel 7 is a mouth, the upper end of the soft rubber hose 2 communicates with the mouth through a metal pipe 5, and a control metal pipe 5 is installed on the metal pipe 5 The on-off valve 6 and the metal pipe 5 are fixed on the support 4 .

Fill liquid into the soft rubber tube 2 through the funnel 7, and control the on-off of the metal tube 5 through the valve 6.

Preferably, this embodiment also includes a pagoda joint 8 and an "eight" shaped needle tube 9, the upper end of the "eight" shaped needle tube 9 has a main interface, and the lower end of the "eight" shaped needle tube 9 has two side-by-side split ports, and the lower end of the soft rubber tube 2 passes through The pagoda joint 8 communicates with the main interface, and the two sub-interfaces communicate with both ends of the blood vessel 3 respectively. Here, in order to ensure the tightness, a metal sealing gasket can be arranged between the lower end of the pagoda joint 8 and the main interface, and the main interface, the metal sealing gasket, and the lower end of the pagoda joint 8 are welded in sequence.

The liquid enters the blood vessel 3 through the tap, and the air bubbles in the blood vessel 3 are discharged upward through the tap and the soft rubber tube 2 in sequence.

Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that it can be described in terms of form and Various changes may be made in the details without departing from the scope of the invention defined by the claims.

Claims (7)

1. a kind of vasopressors simulation system, it is characterised in that: including compression system, flexible rubber hose, blood vessel and bracket, compression system Including fixation clip, movable pressing board, push-pull electromagnet, spring and position-limit mechanism, fixation clip and movable pressing board or so are opposite, Fixation clip is fixed on bracket, and movable pressing board is fixed on the draw bar that push-pull electromagnet left end has, plug-type electromagnetism Iron is connect with bracket slide, and push-pull electromagnet can horizontally slip, and spring is fixed on the dynamic iron core that pull-type electromagnet right end has Between position-limit mechanism, spring is in nature elongation state, and position-limit mechanism is fixed on bracket, flexible rubber hose be pressed on fixation clip and Between movable pressing board, blood vessel both ends are connected to and are formed into a loop with flexible rubber hose lower end respectively, are each filled with liquid in blood vessel and flexible rubber hose.

2. a kind of vasopressors simulation system as described in claim 1, it is characterised in that: the position-limit mechanism includes fixed cylinder And mobile bar, fixed cylinder are fixed on bracket, mobile bar left end is flexibly connected with fixed cylinder and can move left and right along fixed cylinder, bullet Spring right end movable set in fixed cylinder and being fixed on mobile bar left end, be fixed on dynamic iron core right end by spring left end.

3. a kind of vasopressors simulation system as claimed in claim 2, it is characterised in that: mobile bar left end surface is equipped with External screw thread, fixed cylinder surface are equipped with and the matched internal screw thread of external screw thread screw thread.

4. a kind of vasopressors simulation system as claimed in claim 1 or 2, it is characterised in that: the compression system further includes Gag lever post, gag lever post is two and is separately positioned on flexible rubber hose front and rear sides, and having between gag lever post and flexible rubber hose allows flexible glue The gap of pipe deformation, gag lever post left end are fixed on fixation clip, and gag lever post right end activity passes through what movable pressing board surface was equipped with Through-hole.

5. a kind of vasopressors simulation system as claimed in claim 4, it is characterised in that: the bracket is equipped with along right and left To the sliding slot of extension, sliding part is slidably connected in sliding slot, sliding part lower end passes through sliding slot and is fixed on push-pull electromagnet upper end.

6. a kind of vasopressors simulation system as claimed in claim 1 or 2, it is characterised in that: further include metal tube, valve and Funnel, the funnel lower end are bottle neck, and flexible rubber hose upper end is connected to by metal tube with bottle neck, and control metal is equipped on metal tube The valve of pipe on-off, metal tube are fixed on bracket.

7. a kind of vasopressors simulation system as claimed in claim 1 or 2, it is characterised in that: further include pagoda connector and " eight " shape needle tubing, " eight " shape needle tubing upper end have main interface, and there are two tap mouth arranged side by side, flexible rubber hoses for " eight " shape needle tubing lower end tool Lower end is connected to by pagoda connector with main interface, and two tap mouths are connected to blood vessel both ends respectively.