CN215182668U - Atrial fibrillation demonstration model - Google Patents
Atrial fibrillation demonstration model Download PDFInfo
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- CN215182668U CN215182668U CN202120352797.7U CN202120352797U CN215182668U CN 215182668 U CN215182668 U CN 215182668U CN 202120352797 U CN202120352797 U CN 202120352797U CN 215182668 U CN215182668 U CN 215182668U
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Abstract
The utility model discloses an atrial fibrillation demonstration model in the technical field of heart beating models, which comprises a ventricular chamber cover, a closed cavity with a ventricular shape at the outside, a plurality of ventricular elastic strips which are uniformly and fixedly connected with the inner wall, and a ventricular spacing shaft which is fixed inside, wherein a ventricular tension wheel is rotatably arranged on the ventricular spacing shaft, and the other ends of the ventricular elastic strips are fixedly connected with the ventricular tension wheel, so that the rhythm of the heart beat can be simulated and the contraction and relaxation of the heart chamber and the atrium of the heart beat can be displayed, the manufacturing is simpler, the display is more visual, and the carrying is more convenient.
Description
Technical Field
The utility model relates to a heart model technical field that beats especially relates to an atrial fibrillation demonstration model.
Background
The heart's primary function is to provide the motive force for blood flow to the various parts of the body. The human heart is located in the lower left part of the chest, and has a volume about equivalent to the size of a fist and a weight of about 250 g. The heart of a woman is generally smaller and lighter than the heart of a man.
The human heart is shaped like a peach, is positioned above the diaphragm and between the two lungs, is slightly left, is in the middle of the chest cavity, is slightly lower left, is conical, has the size approximately equal to that of a fist of the user, is internally provided with four cavities, and has an atrium at the upper part and a ventricle at the lower part. The relaxation and contraction of the atria and ventricles push the blood circulation through the body.
The heart contracts and relaxes once, called a cardiac cycle, which includes four processes of atrial contraction, atrial relaxation, ventricular contraction and ventricular relaxation, and the normal heart beat is of a fixed rhythm and order.
The heart beat (heartbeat), as the name suggests, is the beat of the heart, and the venous blood of the whole body is accomodate to the right atrium, pumps from the pulmonary artery through the right ventricle, and what flow in the pulmonary artery is venous blood at this moment, through the gas exchange in the lung, becomes the arterial blood that contains abundant oxygen, sends to the left atrium to the pulmonary vein, and each tissue organ of the whole body is in order to satisfy its needs of normal physiological activity to rethread left ventricle's aortic pump.
When the heart is in diastole, the internal pressure is reduced, the vena cava blood flows back into the heart, when the heart is in systole, the internal pressure is increased, the blood is pumped to the artery, and each contraction and diastole of the heart forms a cardiac cycle. The first in a cardiac cycle is a two-atrial contraction, in which the right atrium contracts slightly before the left atrium; the two ventricles contract after the atria begin to relax, while the contraction of the left ventricle is slightly earlier than that of the right ventricle, then the ventricles relax, and the atria begin to contract again at the late stage of the diastole of the ventricles; the heartbeat sequence is thus: atrial contraction, atrial relaxation, ventricular contraction, ventricular relaxation, which is the normal cardiac cycle of the heart beat.
While some people's heart beat rhythm is abnormal, there is currently no good way to demonstrate such beats.
Based on this, the utility model designs an atrium shakes demonstration model to solve above-mentioned problem.
Disclosure of Invention
An object of the utility model is to provide an atrium shakes demonstration model, can simulate the rhythm of heartbeat, and demonstrate the ventricle of heartbeat and the contraction relaxation of atrium, this device is exclusively used in and demonstrates the rhythm that the atrium shakes, be used for simulating the heartbeat of different rhythms, can shake to the atrium and make audio-visual simulation show, can simulate the condition that the ventricle beats too fast, and can demonstrate the heartbeat rhythm when the rhythm is uneven with atrium and ventricle that multiple difference beats the rhythm, the simulation of beating can also be carried out with the proportion of different atria and ventricles simultaneously, and this device is complete mechanical structure, do not need the power supply, do not have cardiovascular simulation yet, only demonstrate the heartbeat rhythm, consequently, the preparation is simpler, it is more convenient to carry, can be convenient to carry and show people in different places, it is also more convenient to use.
The utility model discloses a realize like this: an atrial fibrillation presentation model comprising:
the outer part of the ventricular cavity cover is a closed cavity in the shape of a ventricle, the inner wall of the ventricular cavity cover is uniformly and fixedly connected with a plurality of ventricular elastic strips, a ventricular limiting shaft is fixed in the ventricular cavity cover, a ventricular tension wheel is rotatably arranged on the ventricular limiting shaft, and the other ends of the ventricular elastic strips are fixedly connected with the ventricular tension wheel;
the atrium chamber cover is a closed chamber body with an atrium shape, the inner wall of the atrium chamber cover is uniformly and fixedly connected with a plurality of atrium elastic strips, an atrium limiting shaft is further fixed in the atrium chamber cover, an atrium tension wheel is rotatably arranged on the atrium limiting shaft, and the other ends of the atrium elastic strips are fixedly connected with the atrium tension wheel;
the fixed shaft is a straight shaft and is fixedly arranged between the ventricular cavity cover and the atrial cavity cover;
the adjusting rod is a loop bar, can be rotatably sleeved on the fixed shaft, can be inserted and drawn out and is arranged between the ventricular chamber cover and the atrial chamber cover in a sliding manner, one end of the adjusting rod is arranged outside the ventricular chamber cover and the atrial chamber cover, the other end of the adjusting rod is telescopically arranged on the fixed shaft of the ventricular chamber cover and the atrial chamber cover in a sliding manner, a plurality of groups of ventricular rotating rods and a plurality of groups of atrial rotating rods are arranged on the adjusting rod, and the plurality of groups of ventricular rotating rods and the plurality of groups of atrial rotating rods are arranged in the inner cavities of the ventricular chamber cover and the atrial chamber cover;
the ventricle rotating rod and the atrium rotating rod are long rods of which the outer ends are gears,
the ventricle contraction and expansion wheel and the atrium contraction and expansion wheel are gears;
each ventricle rotating rod is meshed with the tooth of the ventricle contraction and expansion wheel in a separable way, and each atrium rotating rod is meshed with the tooth of the atrium contraction and expansion wheel in a separable way;
when the atrial tension wheels at the corresponding positions of each group block the rotation paths of one group of atrial rotation rods, the ventricular tension wheels at the corresponding positions block the rotation paths of the corresponding group of ventricular rotation rods;
the different groups the quantity proportion diverse of ventricle dwang and atrium dwang, just the irregular ring of ventricle dwang and atrium dwang angle is on the body of rod of adjusting the pole.
Furthermore, the number of the ventricle rotating rods and the atrium rotating rods corresponding to the positions is not less than 3 groups, and the number proportion of the ventricle rotating rods and the atrium rotating rods in each group is fixed;
the number of the ventricle rotating rods in different groups is different, and the number of the ventricle rotating rods in each group is not less than one;
and the number of the ventricle rotating rods and the atrium rotating rods in any group is different.
Further, the number of the ventricle rotating rods and the atrium rotating rods in each group is not fixed, and the number ratio of the ventricle rotating rods to the atrium rotating rods in different groups is different from that of the atrium rotating rods in different groups.
Furthermore, the ventricle rotating rods in the same group are intermittently and alternately positioned on the arc surface of the adjusting rod among the atrium rotating rods;
and the number of ventricular rotation rods of the same group is less than the number of atrial rotation rods.
Furthermore, the plurality of ventricular elastic strips are tensioned and fixed on the inner wall of the ventricular cavity cover, and are tensioned between all jumping positions of the ventricles and the ventricular tension wheel;
the atrium elastic strips are tightly fixed on the inner wall of the atrium chamber cover, and the atrium elastic strips are tightly arranged between the full-beating position of the atrium and the atrium tension wheel.
Further, the ventricular elastic strip and the atrial elastic strip are strip-shaped spring strips.
Furthermore, the atrium contracting and expanding wheel is arranged on the atrium limiting shaft in a non-sliding mode through a bearing, and the ventricle contracting and expanding wheel is arranged on the ventricle limiting shaft in a non-sliding mode through a bearing.
Furthermore, the adjusting rod is in transition fit with the fixed shaft.
Furthermore, the ventricular chamber cover and the atrial chamber cover are integrally closed cavities made of rubber, and stainless steel reinforcing ribs are arranged at the joints between the ventricular chamber cover and the atrial chamber cover.
Furthermore, the adjusting rod is arranged at one end outside the ventricular chamber cover and the atrial chamber cover and is further fixed with a rotating handle which is of a sheet structure, the adjusting rod outside the ventricular chamber cover and the atrial chamber cover is also etched with a heart rhythm mark, and the mark of the heart rhythm mark corresponds to the ratio of each group of ventricular rotating rods and each group of atrial rotating rods one to one.
The utility model has the advantages that: 1. the utility model does not use electronic products, has high reliability, convenient use and carrying, more applicable environments, and can adjust different heart beat rhythms only by shaking hands;
2. the device ensures that the ventricle rotating rods and the atrium rotating rods of different groups are matched by pulling and pulling the adjusting rods, so as to adjust different beating rhythms of the ventricle cavity cover and the atrium cavity cover, simulate the beating rhythms of different proportions of an atrium and a ventricle, further simulate the irregular beating state of the whole atrium and ventricle, and further achieve the aim of displaying atrial fibrillation;
3. the device controls the fixed quantity of the atrium rotating rods for controlling the atrium to beat, so that a plurality of beating rhythm changes of the ventricle when the atrium rhythm is fixed can be simulated, the atrium rhythm is matched only by using different ventricle rotating rods, the atrial rhythm is finished only by pulling the adjusting rods, the operation is simple, the atrium rotating rods and the ventricle rotating rods do not have fixed proportion, and the atrial fibrillation state is simulated more vividly;
4. this device has used the strip spring leaf as ventricle elastic strip and atrium elastic strip for ventricle receipts stretch out wheel and atrium receipts stretch out wheel after the atress shrink, because lose external force and elasticity is relaxed again and is opened, the simulation heartbeat is more lifelike, and need not operate once more, only need rotate the regulation pole and can accomplish the beat of heart irregularity, easy operation.
Drawings
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall external structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the ventricular chamber cover and the atrial chamber cover according to the present invention;
FIG. 3 is a schematic view of the structure of the adjusting lever of the present invention;
FIG. 4 is a schematic view of the adjusting lever of the present invention cooperating with the ventricular contraction and expansion wheel and the atrial contraction and expansion wheel;
FIG. 5 is a schematic view of the inner structure of the ventricular chamber cover and the atrial chamber cover with the adjustment rod removed;
fig. 6 is a schematic diagram of the poking fit of the ventricular rotating rod and the atrial rotating rod of different groups of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-ventricular chamber cover, 11-ventricular contraction wheel, 12-ventricular elastic strip, 13-ventricular limiting shaft, 2-atrial chamber cover, 21-atrial contraction wheel, 22-atrial elastic strip, 23-atrial limiting shaft, 3-adjusting rod, 31-ventricular rotating rod, 32-atrial rotating rod, 33-rotating handle, 34-heart rhythm mark and 4-fixing shaft.
Detailed Description
Referring to fig. 1 to 6, the present invention provides a technical solution: an atrial fibrillation presentation model comprising:
the ventricular cavity cover 1 is provided with a closed cavity in the shape of a ventricle on the outside, a plurality of ventricular elastic strips 12 are uniformly and fixedly connected on the inner wall, a ventricular limiting shaft 13 is fixed in the ventricular cavity cover 1, a ventricular tension wheel 11 is rotatably arranged on the ventricular limiting shaft 13, and the other ends of the ventricular elastic strips 12 are fixedly connected with the ventricular tension wheel 11;
the atrium chamber cover 2, the outside is the closed cavity of the atrium shape, the homogeneous fixed connection of inner wall has a plurality of atrium elastic strips 22, the inside has fixed a atrium spacing axle 23, the ones that can rotate on the said atrium spacing axle 23 have installed an atrium and contracted the tension wheel 21, another end of a plurality of said atrium elastic strips 22 all fixedly connects with atrium and contracts the tension wheel 21;
the fixed shaft 4 is a straight shaft and is fixedly arranged between the ventricular cavity cover 1 and the atrial cavity cover 2;
the adjusting rod 3 is a loop bar, can be rotatably sleeved on the fixing shaft 4, can be inserted and drawn out and is arranged between the ventricular chamber cover 1 and the atrial chamber cover 2 in a sliding manner, one end of the adjusting rod is arranged outside the ventricular chamber cover 1 and the atrial chamber cover 2, the other end of the adjusting rod is telescopically arranged on the fixing shaft 4 of the ventricular chamber cover 1 and the atrial chamber cover 2 in a sliding manner, a plurality of groups of ventricular rotating rods 31 and a plurality of groups of atrial rotating rods 32 are arranged on the adjusting rod, and the plurality of groups of ventricular rotating rods 31 and the plurality of groups of atrial rotating rods 32 are arranged in the inner cavities of the ventricular chamber cover 1 and the atrial chamber cover 2;
the ventricle rotating rod 31 and the atrium rotating rod 32 are long rods with gears at the outer ends,
the ventricle contraction and expansion wheel 11 and the atrium contraction and expansion wheel 21 are gears;
each ventricle rotating rod 31 is detachably meshed with the tooth of the ventricle contraction wheel 11, and each atrium rotating rod 32 is detachably meshed with the tooth of the atrium contraction wheel 21;
the positions of each group of the ventricle rotating rods 31 and each group of the atrium rotating rods 32 are in one-to-one correspondence, the number proportion of the ventricle rotating rods 31 and the atrium rotating rods 32 in different groups is different, and when the atrium tension wheel 21 in the corresponding position of each group is blocked on the rotating path of one group of the atrium rotating rods 32, the ventricle tension wheel 11 in the corresponding position is blocked on the rotating path of the group of the ventricle rotating rods 31 in the corresponding position;
different groups the quantity proportion diverse of ventricle dwang 31 and atrium dwang 32, just ventricle dwang 31 and atrium dwang 32 irregular angle encircle on adjusting the body of rod of pole 3, can simulate the rhythm of heartbeat, and demonstrate the ventricular of heartbeat and the contraction and relaxation of atrium, this device is exclusively used in and demonstrates the rhythm of atrial fibrillation, be used for simulating the heartbeat of different rhythms, can make audio-visual simulation show to atrial fibrillation, can simulate the condition that the ventricle beats too fast, and can demonstrate the heartbeat rhythm when the rhythm is different with the atrium of multiple differences and the ventricular rhythm of beating, can also beat the simulation with the atrium of difference and the proportion of ventricle simultaneously, and this device is complete mechanical structure, does not need the power supply, does not have cardiovascular simulation yet, only demonstrates the heartbeat rhythm, therefore the preparation is simpler, the portable multifunctional table is more convenient to carry, can be conveniently carried to show people in different places, and is more convenient to use.
The number of the ventricle rotating rods 31 and the atrium rotating rods 32 corresponding to the positions is not less than 3 groups, and the number ratio of the ventricle rotating rods 31 to the atrium rotating rods 32 in each group is fixed;
the number of the ventricle rotating rods 31 in different groups is different, and the number of the ventricle rotating rods 31 in each group is not less than one;
the number of the ventricle rotating rods 31 and the atrium rotating rods 32 in any group is different, contraction and relaxation rhythms of the ventricle cavity cover 1 and the atrium cavity cover 2 are completed by matching the ventricle rotating rods 31 and the atrium rotating rods 32 with different proportions, and therefore atrial fibrillation with different heartbeat rhythms is simulated, and the ventricle rotating rods 31 and the atrium rotating rods 32 in any group of the device are shown as irregular heartbeats;
the number of the ventricle rotating rods 31 and the atrium rotating rods 32 in each group is not fixed, and the number ratio of the ventricle rotating rods 31 to the atrium rotating rods 32 in different groups is different, so that the ventricular beat rhythm of the device is irregular, and the atrial rhythm is conveniently adjusted to simulate the heartbeat in the atrial fibrillation state for display;
the ventricle rotating rods 31 in the same group are intermittently and alternately positioned on the arc surface of the adjusting rod 3 among the atrium rotating rods 32;
the number of the ventricle rotating rods 31 in the same group is less than that of the atrium rotating rods 32, so that the ventricle rotating rods 31 are convenient to pull and elastically restore to the original state, the heart can be stimulated to relax immediately after contraction, the atrium and the ventricle beat irregularly, the atrium does not beat again after the ventricle beats, the device alternately or continuously beats irregularly, atrial fibrillation with different rhythms is stimulated, and the atrium and the ventricle are regulated and rotated by the regulating rods 3;
the ventricular elastic strips 12 are tensioned and fixed on the inner wall of the ventricular cavity cover 1, and the ventricular elastic strips 12 are tensioned between the full-beating position of the ventricle and the ventricular tension wheel 11;
the plurality of the atrium elastic strips 22 are tightly fixed on the inner wall of the atrium chamber cover 2, the plurality of the atrium elastic strips 22 are tightly arranged between the full beating position of the atrium and the atrium tension wheel 21, and the ventricle chamber cover 1 and the atrium chamber cover 2 are pulled through the elastic ventricle elastic strips 12 and the atrium elastic strips 22 for simulating the beating of the heart;
the ventricular elastic strip 12 and the atrial elastic strip 22 are strip-shaped spring strips, so that the ventricular elastic strip and the atrial elastic strip are convenient to pull and elastically restore, and the contraction and immediate relaxation of the heart are simulated;
the atrium tension wheel 21 is arranged on the atrium limiting shaft 23 in a non-sliding way through a bearing, the ventricle tension wheel 11 is arranged on the ventricle limiting shaft 13 in a non-sliding way through a bearing, so that the atrium tension wheel 21 and the ventricle tension wheel 11 can rotationally pull the ventricle elastic strip 12 and the atrium elastic strip 22 to contract the ventricle cavity cover 1 and the atrium cavity cover 2;
the adjusting rod 3 is in transition fit with the fixed shaft 4, so that the adjusting rod 3 can be telescopically adjusted on the fixed shaft 4, and the adjusting rod 3 can also rotate by taking the fixed shaft 4 as an axis, so that the ventricle rotating rod 31 and the atrium rotating rod 32 can be conveniently pulled during rotation;
the ventricular cavity cover 1 and the atrial cavity cover 2 are integrally closed cavities made of rubber, and stainless steel reinforcing ribs are arranged at the joint between the ventricular cavity cover 1 and the atrial cavity cover 2 and used for stably fixing the adjusting rod 3 and the fixing shaft 4 and playing a role in reinforcing the integral structure;
adjust pole 3 and set up in one of ventricular chamber cover 1 and the atrium chamber cover 2 outside and still fixed turning handle 33, turning handle 33 is sheet structure, ventricular chamber cover 1 and atrium chamber cover 2 outside adjust pole 3 on still be carved with rhythm of the heart mark 34, the mark of rhythm of the heart mark 34 and every position one-to-one of group's ventricle dwang 31 and atrium dwang 32 are convenient for externally just can accurate judgement be that the ventricle dwang 31 and the atrium dwang 32 of that a set of proportion receive a wheel 21 and a ventricle and receive a wheel 11 at the atrium, the different atrium of the regulation of being convenient for accurately quiver the rhythm to show, ensure simultaneously that the heartbeat show is irregular beat.
In a specific embodiment of the present invention:
the embodiment of the utility model provides a through providing an atrium vibrates demonstration model, the utility model provides a technical problem be: 1. the existing heartbeat model is not available and is basically a fixed model with a blood vessel flow direction; 2. the existing heart model is only fixed, cannot beat, cannot completely display the heart rate and beat rhythm, and does not have a model convenient to display.
The realized technical effects are as follows: 1. the utility model does not use electronic products, has high reliability, convenient use and carrying, more applicable environments, and can adjust different heart beat rhythms only by shaking hands;
2. the device ensures that the ventricle rotating rods 31 and the atrium rotating rods 32 of different groups are matched by pulling the adjusting rod 3, so as to adjust different beating rhythms of the ventricle cavity cover 1 and the atrium cavity cover 2, simulate the beating frequency of an atrium and a ventricle in different proportions, further simulate the whole atrium and ventricle to be in an irregular beating state, and achieve the purpose of displaying atrial fibrillation;
3. the device controls the fixed quantity of the ventricle rotating rod 31 and the atrium rotating rod 32 which are in atrial beating, so that a plurality of irregular beating rhythm changes of an atrium and a ventricle can be simulated, the atrial beating rhythm changes can be completed only by matching different ventricle rotating rods 31 and only by pulling the adjusting rod 3, the operation is simple, the atrium rotating rod 32 and the ventricle rotating rod 31 are not in fixed proportion, and the atrial fibrillation state is simulated more vividly;
4. this device has used strip spring leaf as ventricle elastic strip 12 and atrium elastic strip 22 for ventricle receipts stretch wheel 11 and atrium receive stretch wheel 21 after the atress shrink, because lose external force and elasticity is relaxed again and is opened, the simulation heartbeat is more lifelike, and need not operate once more, only need rotate regulation pole 3 can accomplish the irregular beating of heart, easy operation.
The embodiment of the utility model provides an in technical scheme for solving above-mentioned problem, the general thinking is as follows:
for better understanding of the above technical solutions, the following detailed descriptions will be provided in conjunction with the drawings and the detailed description of the embodiments.
When the utility model is manufactured and installed, the adjusting rod 3 and the fixing shaft 4 are firstly manufactured, the adjusting rod 3 and the fixing shaft 4 are both made of stainless steel structures, then reinforcing ribs are manufactured at the joint between the ventricular chamber cover 1 and the atrial chamber cover 2, the reinforcing ribs are also reinforced by the stainless steel, the joint between the ventricular chamber cover 1 and the atrial chamber cover 2 does not need to be shrunk or stretched in a relaxation way, and is a stable stainless steel frame, and then the fixing shaft 4 is fixed on the reinforcing ribs between the ventricular chamber cover 1 and the atrial chamber cover 2; preferably, the ventricular cavity cover 1 and the atrial cavity cover 2 can be mutually assembled, and when in use, the ventricular cavity cover 1 and the atrial cavity cover 2 can be disassembled through the reinforcing ribs, and the adjusting rod 3 can be replaced;
the method is characterized in that two hollow rubber capsule bodies are made of rubber with moderate hardness and good toughness, the outer shape of each rubber capsule body is made into the shape of the heart of an adult, the inner part of each rubber capsule body is hollow, one rubber capsule body is made into the shape of a ventricle cover 1, the other rubber capsule body is made into the shape of an atrium, and the other rubber capsule body is made into the shape of an atrium cover 2, and after all parts are assembled, the ventricle cover 1 and the atrium cover 2 are stably spliced and fixed into an integral structure;
the heart in the ventricular cavity cover 1 can beat and contract or can be relaxed to fix the ventricular elastic strip 12, then a ventricular limiting shaft 13 is fixedly inserted into the ventricular cavity cover 1, the ventricular limiting shaft 13 does not rotate, a ventricular tension wheel 11 is installed on the ventricular limiting shaft 13, the ventricular tension wheel 11 can be rotatably installed on the ventricular limiting shaft 13 through a bearing, but the ventricular tension wheel 11 cannot slide on the ventricular limiting shaft 13 and can only be fixed on a specific position and rotate along the axis of the ventricular limiting shaft 13, then the ventricular elastic strip 12 is tightened between the inner wall of the ventricular cavity cover 1 and the ventricular tension wheel 11, so that the ventricular elastic strip 12 is in the ventricular relaxation state when not stressed, and the ventricular tension wheel 11 is shown in fig. 4, and the ventricular tension wheel 11 is a gear and can be meshed with the ventricular adjusting rod 31 to rotate;
the atrial chamber cover 2 has the same internal structure as the ventricular chamber cover 1, as shown in fig. 2, and the structures of the atrial tension wheel 21, the atrial elastic strip 22 and the atrial limiting shaft 23 are also the same as the internal structure of the ventricular chamber cover 1, so that the atrium is in a diastolic state when the atrial elastic strip 22 is free from external force, and the outside of the atrial chamber cover 2 is in a contracted state when the atrial elastic strip 22 is pulled by force;
then a fixed shaft 4 is inserted and fixed between the ventricular cavity cover 1 and the atrial cavity cover 2, one end of the fixed shaft is fixed inside the ventricular cavity cover 1 and the atrial cavity cover 2, the other end of the fixed shaft is suspended, an adjusting rod 3 is inserted through the suspended end of the fixed shaft 4, the adjusting rod 3 is a loop bar, the adjusting rod 3 can slide along the axis of the fixed shaft 4, and meanwhile, the adjusting rod 3 can also rotate along the fixed shaft 4;
the adjusting rod 3 is provided with 4 groups of ventricle rotating rods 31 and atrium rotating rods 32, the positions of each group of ventricle rotating rods 31 and atrium rotating rods 32 are fixed, when the same group of ventricle rotating rods 31 and the ventricle tension wheels 11 are in butt joint and can be rotatably meshed with each other, the atrium rotating rods 32 in the same group of positions just correspond to the positions of the atrium tension wheels 21, at this time, the atrium rotating rods 32 and the atrium tension wheels 21 can be mutually hooked and separated, as shown in fig. 2 and 5, the ventricle rotating rods 31 and the atrium rotating rods 32 in different groups are respectively in mutual hooking transmission with the ventricle tension wheels 11 and the atrium tension wheels 21;
and the number ratio of the ventricular rotation rods 31 to the atrial rotation rods 32 of different groups is different, as shown in fig. 3, the number of the ventricular rotation rods 31 of the first leftmost group is 1, and the number of the atrial rotation rods 32 of the first group is also 2; the ventricular rods 31 of the second group are 2 and the atrial rods 32 of the second group are 5 in number; the ventricular rods 31 of the third group are 3 and the atrial rods 32 of the third group are 7 in number; not shown in this figure, 4 ventricular rotation rods 31 and 9 atrial rotation rods 32 may be added to the fourth group; therefore, the rotating speeds of different proportions can be achieved by adjusting different groups of the ventricle rotating rod 31 and the atrium rotating rod 32 to be matched with the ventricle tension wheel 11 and the atrium tension wheel 21, and the atrial fibrillation of different frequencies of the heart can be achieved, and the number of the ventricle rotating rods 31 is always smaller than that of the atrium rotating rods 32, the atrial chamber cover 2 has to beat for a circle each time the adjusting rod 3 rotates for one circle, and the beat frequency of the ventricle chamber cover 1 is larger than that of the atrium chamber cover 2, the device needs to adjust the position of the rod 3 to achieve the purpose that the ventricular chamber cover 1 and the atrial chamber cover 2 do irregular beating, can visually display the irregular beating of the ventricles and the atria, meanwhile, the ventricle jumps much slower than the atrium, and the difference of the ventricular and atrial jump speeds is completed through the number ratio of the ventricle rotating rod 31 to the atrium rotating rod 32 during manufacturing;
one end of the adjusting rod 3 is inserted into the fixed shaft 3 and all the ventricular rotating rods 31 and the atrial rotating rods 32 are positioned inside the ventricular chamber cover 1 and the atrial chamber cover 2, the other end of the adjusting rod 3 is positioned outside the ventricular chamber cover 1 and the atrial chamber cover 2 and is used for manually rotating and drawing the adjusting rod 3, a rotating handle 33 is also arranged at one end of the adjusting rod 3 outside the ventricular chamber cover 1 and the atrial chamber cover 2, heart rhythm marks 34 with different proportions are also cut on the outer end of the adjusting rod 3, and each heart rate marker corresponds one-to-one to the position of each set of ventricular pivot rods 31 and atrial pivot rods 32, such as when the third set of ventricular pivot rods 31 and atrial pivot rods 32 are intermeshed with the ventricular tension wheel 11 and the atrial tension wheel 21, while the third heart rhythm marker 34 is exactly aligned with the outer edges of the ventricular chamber cover 1 and the atrial chamber cover 2, as shown in fig. 2;
similarly, when the first set of ventricular rotation rods 31 and atrial rotation rods 32 are engaged in abutment, the first heart rate mark 34 is aligned with the outer edge of the ventricular chamber cover 1 and the atrial chamber cover 2, and all the heart rate marks 34 are marked by scales, and the ventricular rotation rods 31 and the atrial rotation rods 32 are engaged with the ventricular contraction wheel 11 and the atrial contraction wheel 21 respectively and can rotate.
When the utility model is used, when the most basic atrial fibrillation rhythm needs to be displayed, the simplest atrial fibrillation is that the atrial strip is used twice, the ventricle beats once, the adjusting rod 3 is firstly pulled and pulled out until the position is shown in figure 5, and the quantity ratio of the ventricular rotating rod 31 to the atrial rotating rod 32 in the first group can be 1: 2; the adjusting rod 3 rotates continuously, the atrium rotating rod 32 engages with the gear of the atrium tension wheel 21, the atrium tension wheel 21 rotates on the atrium limiting shaft 23 to pull and drag all the atrium elastic strips 22, the atrium elastic strips 22 pull the atrium chamber cover 2 to shrink the atrium chamber cover 2, contraction is displayed from the external atrium chamber cover 2, when the adjusting rod 3 rotates continuously, the atrium rotating rod 32 and the atrium tension wheel 21 rotate excessively, the atrium elastic strips 22 recover to the original position, the atrium chamber cover 2 returns to the diastolic state, then the gear of the atrium tension wheel 21 rotates once again under the continuous engagement rotation of the second atrium rotating rod 32, and at the moment, the atrium chamber cover 2 contracts and relaxes again;
the ventricle rotating rod 31 and the atrium rotating rod 32 are respectively butted with the ventricle tension wheel 11 and the atrium tension wheel 21, then the adjusting rod 3 is rotated, the adjusting rod 3 rotates on the fixing shaft 4, when the ventricle rotating rod 31 and the ventricle tension wheel 11 are meshed to rotate, the ventricle tension wheel 11 rotates on the ventricle limiting shaft 13 by a certain radian, the ventricle elastic strip 12 can be pulled by the rotation of the ventricle limiting shaft 13, the ventricle elastic strip 12 contracts and pulls the ventricle cavity cover 1, so that the exterior of the device looks like that the ventricle cavity cover 1 contracts once, then the ventricle rotating rod 31 rotates excessively and is separated from the ventricle tension wheel 11 quickly, the ventricle elastic strip 12 is not pulled by external force, the elasticity enables the ventricle cavity cover 1 to recover the original relaxation position, and thus the device completes the contraction and relaxation of a ventricle;
this completes the contraction and relaxation of the atria twice, less than 0.2 seconds apart, and once from ventricular to systolic relaxation, thus completing the basic 1:2 atrial fibrillation display, with almost no time gaps between successive beats of the atria, and brief intervals between atrial transitions to ventricular beats.
When a more complex atrial fibrillation rhythm needs to be displayed, the atrium rotating rods 32 and the ventricle rotating rods 31 of other groups are irregularly arranged on the axis of the adjusting rod 3, as shown in fig. 3, some atrium rotating rods 32 are above and below the axis of the adjusting rod 3, and the cambered surfaces of the adjusting rods 3 on which all the ventricle rotating rods 31 are arranged are irregular;
similarly, when different sets of the ventricular rotating levers 31 and the atrial rotating levers 32 are butted against the ventricular contraction wheel 11 and the atrial contraction wheel 21, as shown in fig. 2, the ventricular rotating levers 31 and the atrial rotating levers 32 which are the third set are butted against the ventricular contraction wheel 11 and the atrial contraction wheel 21, respectively, when the adjustment lever 3 is rotated, the ventricular chamber cover 1 contracts and relaxes at least twice, and the atrial chamber cover 2 contracts and relaxes 4-5 times under the meshing rotation of four or five atrial rotating levers 32, so that a heart beat rhythm is formed in which the atrium beats 1-2 times first, the ventricle beats 1 time again, the adjustment lever 3 is rotated continuously, the atrium beats 3-4 times again, and the ventricle beats 2 times again, so that an irregular frequency is formed to show the heart rhythm in the atrial fibrillation state, and adjustment at different ratios is achieved by the ratios of the ventricular rotating levers 31 and the atrial rotating levers 32 which are different sets, thus achieving an irregular atrial fibrillation state for simulation.
Although specific embodiments of the present invention have been described, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the claims appended hereto.
Claims (10)
1. An atrial fibrillation presentation model, comprising:
the heart ventricle cavity cover (1) is provided with a closed cavity in the shape of a heart ventricle on the outside, a plurality of heart ventricle elastic strips (12) are uniformly and fixedly connected on the inner wall, a heart ventricle limiting shaft (13) is further fixed in the heart ventricle cavity cover, a heart ventricle tension wheel (11) is rotatably arranged on the heart ventricle limiting shaft (13), and the other ends of the heart ventricle elastic strips (12) are fixedly connected with the heart ventricle tension wheel (11);
the atrium chamber cover (2) is a closed chamber body with an atrium shape on the outer part, a plurality of atrium elastic strips (22) are uniformly and fixedly connected on the inner wall, an atrium limiting shaft (23) is further fixed in the atrium chamber cover, an atrium tension wheel (21) is rotatably arranged on the atrium limiting shaft (23), and the other ends of the atrium elastic strips (22) are fixedly connected with the atrium tension wheel (21);
the fixed shaft (4) is a straight shaft and is fixedly arranged between the ventricular cavity cover (1) and the atrial cavity cover (2);
the adjusting rod (3) is a loop bar, can be rotatably sleeved on the fixed shaft (4), can be inserted and drawn out and is arranged between the ventricular chamber cover (1) and the atrial chamber cover (2) in a sliding manner, one end of the adjusting rod is arranged outside the ventricular chamber cover (1) and the atrial chamber cover (2), the other end of the adjusting rod is telescopically arranged on the fixed shaft (4) of the inner cavities of the ventricular chamber cover (1) and the atrial chamber cover (2) in a sliding manner, a plurality of groups of ventricular rotating rods (31) and a plurality of groups of atrial rotating rods (32) are arranged on the adjusting rod, and the plurality of groups of ventricular rotating rods (31) and the plurality of groups of atrial rotating rods (32) are arranged in the inner cavities of the ventricular chamber cover (1) and the atrial chamber cover (2);
the ventricle rotating rod (31) and the atrium rotating rod (32) are long rods of which the outer ends are gears,
the ventricle contraction and expansion wheel (11) and the atrium contraction and expansion wheel (21) are gears;
each ventricle rotating rod (31) is detachably meshed with the tooth of the ventricle tension wheel (11), and each atrium rotating rod (32) is detachably meshed with the tooth of the atrium tension wheel (21);
the positions of the ventricle rotating rods (31) and the atrium rotating rods (32) in each group are in one-to-one correspondence, the number proportion of the ventricle rotating rods (31) to the atrium rotating rods (32) in different groups is different, and when the atrium tension wheels (21) in the corresponding positions in each group block the rotating path of one group of atrium rotating rods (32), the ventricle tension wheels (11) in the corresponding positions block the rotating path of one group of ventricle rotating rods (31) in the corresponding positions;
the quantity proportion diverse of different groups ventricle dwang (31) and atrium dwang (32), just the irregular ring of ventricle dwang (31) and atrium dwang (32) angle is on the body of rod of adjusting pole (3).
2. A model for demonstrating atrial fibrillation according to claim 1, further comprising: the number of the ventricle rotating rods (31) and the atrium rotating rods (32) corresponding to the positions is not less than 3 groups, and the number proportion of the ventricle rotating rods (31) to the atrium rotating rods (32) in each group is fixed;
the number of the ventricle rotating rods (31) in different groups is different, and the number of the ventricle rotating rods (31) in each group is not less than one;
and the number of the ventricle rotating rods (31) and the atrium rotating rods (32) in any group is different.
3. A model for demonstrating atrial fibrillation according to claim 2, further comprising: the number of the ventricle rotating rods (31) and the atrium rotating rods (32) in each group is not fixed, and the number ratio of the ventricle rotating rods (31) to the atrium rotating rods (32) in different groups is different.
4. A model for demonstrating atrial fibrillation according to claim 1, further comprising: the ventricle rotating rods (31) in the same group are intermittently and alternately positioned on the arc surface of the adjusting rod (3) among the atrium rotating rods (32);
and the number of the ventricle rotating rods (31) in the same group is less than that of the atrium rotating rods (32).
5. A model for demonstrating atrial fibrillation according to claim 1, further comprising: the ventricular elastic strips (12) are tensioned and fixed on the inner wall of the ventricular cavity cover (1), and the ventricular elastic strips (12) are tensioned between the full beating position of the ventricle and the ventricular tension wheel (11);
the atrium elastic strips (22) are tightly fixed on the inner wall of the atrium chamber cover (2), and the atrium elastic strips (22) are tightly arranged between the full beating position of the atrium and the atrium tension wheel (21).
6. An atrial fibrillation presentation model according to claim 5, wherein: the ventricle elastic strip (12) and the atrium elastic strip (22) are strip-shaped spring strips.
7. A model for demonstrating atrial fibrillation according to claim 1, further comprising: the atrium tension wheel (21) is arranged on the atrium limit shaft (23) in a non-sliding mode through a bearing, and the ventricle tension wheel (11) is arranged on the ventricle limit shaft (13) in a non-sliding mode through a bearing.
8. A model for demonstrating atrial fibrillation according to claim 1, further comprising: the adjusting rod (3) is in transition fit with the fixed shaft (4).
9. A model for demonstrating atrial fibrillation according to claim 1, further comprising: the heart ventricle cover (1) and the heart atrium cover (2) are integrally closed cavities made of rubber, and stainless steel reinforcing ribs are arranged at the joint between the heart ventricle cover (1) and the heart atrium cover (2).
10. A model for demonstrating atrial fibrillation according to claim 2, further comprising: adjust pole (3) and set up and still fixed turning handle (33) on one end of ventricular chamber cover (1) and atrium chamber cover (2) outside, turning handle (33) are the sheet structure, still be carved with rhythm of the heart mark (34) on ventricular chamber cover (1) and atrium chamber cover (2) outside regulation pole (3), the mark of rhythm of the heart mark (34) and the proportion one-to-one of every group's ventricle dwang (31) and atrium dwang (32).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120352797.7U CN215182668U (en) | 2021-02-08 | 2021-02-08 | Atrial fibrillation demonstration model |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120352797.7U CN215182668U (en) | 2021-02-08 | 2021-02-08 | Atrial fibrillation demonstration model |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112837592A (en) * | 2021-02-08 | 2021-05-25 | 中国人民解放军联勤保障部队第九〇〇医院 | Atrial fibrillation demonstration model |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112837592A (en) * | 2021-02-08 | 2021-05-25 | 中国人民解放军联勤保障部队第九〇〇医院 | Atrial fibrillation demonstration model |
| CN112837592B (en) * | 2021-02-08 | 2024-05-03 | 中国人民解放军联勤保障部队第九〇〇医院 | Atrial fibrillation demonstration model |
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