CN216168097U - Diastole auxiliary instrument - Google Patents
Diastole auxiliary instrument Download PDFInfo
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- CN216168097U CN216168097U CN202122445183.6U CN202122445183U CN216168097U CN 216168097 U CN216168097 U CN 216168097U CN 202122445183 U CN202122445183 U CN 202122445183U CN 216168097 U CN216168097 U CN 216168097U
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Abstract
The utility model discloses a diastole auxiliary instrument, which is provided with an elastic spring structure; the elastic spring structure consists of an upper supporting spring wire, a lower supporting spring wire and a plurality of main spring wires connected between the upper supporting spring wire and the lower supporting spring wire, wherein the main spring wires protrude outwards relative to the upper supporting spring wire and the lower supporting spring wire, and the overall appearance of the elastic spring structure in a natural state is similar to the shape of a left ventricle of a heart; the elastic spring structure contracts to store elastic energy when being extruded by external force, and rebounds outwards to tend to a natural state when the external force disappears. The instrument made of the spring wire can be compressed and implanted into a heart chamber through a small incision on the wall of the heart chamber, so that the cardiac wound during operation can be reduced, and the injury to a patient is reduced, thereby being beneficial to shortening the recovery period of the patient; the upper and lower support spring wires are bent outwards to store elastic energy when the main spring wire is pressed, and then rebound along with the main spring wire when rebounding, so that the reinforcing auxiliary effect can be achieved, and the supporting effect on the main spring wire can also be achieved.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a diastole auxiliary instrument.
Background
Diastolic heart failure can cause a series of symptoms such as pulmonary venous congestion, dyspnea, tired palpitation, edema, cardiogenic shock and the like to a patient with ventricular diastolic dysfunction, and the life quality and life safety of the patient are seriously affected. The heterogeneity of the diastolic heart failure is very strong, and the diastolic heart failure can only be treated by drugs at present, mainly by using neurohormonal antagonists, but the treatment effect is not clear and the prognosis difference is large. Therefore, the utility model of the auxiliary diastolic device for diastolic heart failure therapy has important significance in replacing drug therapy.
Diastolic heart failure is the phenomenon that the relaxation function of cardiac muscle is weakened to weaken the filling of ventricles, the diastolic function of the heart is expected to be rapidly enhanced through the assistance of the apparatus, a series of symptoms such as dyspnea, tired palpitation, edema, cardiogenic shock and the like caused by the diastolic heart failure are rapidly relieved, and the diastolic function of the heart can be gradually restored to be normal after the auxiliary apparatus is used for a long time.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a diastole auxiliary device which is suitable for assisting diastole.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a diastole auxiliary apparatus has an elastic spring structure; the elastic spring structure consists of an upper supporting spring wire, a lower supporting spring wire and a plurality of main spring wires connected between the upper supporting spring wire and the lower supporting spring wire, wherein the main spring wires protrude outwards relative to the upper supporting spring wire and the lower supporting spring wire, and the overall appearance of the elastic spring structure in a natural state is similar to the shape of a left ventricle of a heart; the elastic spring structure contracts to store elastic energy when being extruded by external force, and rebounds outwards to tend to a natural state when the external force disappears.
Preferably, the outer diameter of the elastic spring structure in the natural state is slightly larger than the diameter of the inner wall of the ventricle at the corresponding position when the volume of the ventricle is maximum.
Preferably, the upper support spring wire and the lower support spring wire are respectively composed of spring wire segments connected between two adjacent main spring wires. Preferably, the spring wire section is arc-shaped.
Preferably, the shape defined by the main spring wire in the elastic spring structure is a trumpet shape.
Preferably, the diameters of the upper support spring wire, the lower support spring wire and the main spring wire are the same. Preferably, the diameters of the spring wires of the upper support spring wire, the lower support spring wire and the main spring wire are 0.5mm-2 mm.
Preferably, the number of the main spring wires is 4-8, and the main spring wires are uniformly arranged between the upper support spring wire and the lower support spring wire.
The utility model has the beneficial effects that:
the instrument made of the spring wire can be compressed and implanted into a heart chamber through a small incision on the wall of the heart chamber, so that the cardiac wound during operation can be reduced, and the injury to a patient is reduced, thereby being beneficial to shortening the recovery period of the patient; the upper and lower support spring wires are bent outwards to store elastic energy when the main spring wire is pressed, and then rebound along with the main spring wire when the main spring wire rebounds, so that the main spring wire can play a role in strengthening assistance, can also play a role in supporting the main spring wire, and is favorable for avoiding the rebound resilience from weakening or generating deformation after the main spring wire is fatigued; the main spring wire is still compressed to a certain extent when the heart is in the maximum volume, so that the apparatus can be well attached to the inner wall of the heart chamber in the whole cardiac cycle; the main spring wire is in a horn shape and is similar to the shape in the ventricle, so that good fit and reduction of damage to the ventricle wall during instrument action are facilitated; the instrument utilizes the self resilience to assist the diastole, does not generate strong shearing force for damaging blood, does not need a power source and has high reliability; compared with the medicine treatment, the diastolic function of the heart can be immediately enhanced after the apparatus is implanted, a series of symptoms brought to a patient by the diastolic heart failure are quickly relieved, and the diastolic function of the heart is gradually restored to be normal.
Drawings
Fig. 1 is a schematic structural view of a diastolic auxiliary device of the present invention.
Fig. 2 is a schematic view of the diastolic assistance device in fig. 1 in a compressed state.
Figure 3 is a schematic top view of the diastolic aid device of the present invention in its natural (a) and compressed (b) states.
Fig. 4 is a schematic structural view of the diastolic auxiliary device of the present invention installed in a heart chamber during diastole.
FIG. 5 is a schematic view of the diastolic auxiliary device of the present invention installed in a heart chamber during systole.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the diastole auxiliary device of the present invention has an elastic spring structure; the elastic spring structure is composed of an upper support spring wire 1, a lower support spring wire 3 and a plurality of main spring wires 2 connected between the upper support spring wire 1 and the lower support spring wire 3, wherein the upper support spring wire 1 and the lower support spring wire 3 are respectively composed of spring wire sections connected between two adjacent main spring wires 2. Each spring wire section is arc-shaped. A plurality of main spring wires 2 project outwardly with respect to the upper and lower support spring wires 1 and 3. In the natural spring structure shown in fig. 1, the main spring wire 2 defines a trumpet shape, and the overall shape of the spring structure is similar to the shape of the left ventricle of the heart. As shown in fig. 2 and 3 (b), the elastic spring structure is contracted inward to store elastic energy when external force is applied, for example, when the heart of a person contracts; when the external force becomes small or disappears, for example, when the heart relaxes, the outward spring back tends to the natural state shown in fig. 1 and 3 (a).
In the diastolic auxiliary device according to an embodiment of the present invention, the upper support spring wire 1 is connected to the upper ends of the main spring wires 2, and the lower support spring wire is connected to the lower ends of the main spring wires 2. Wherein the spring wire section forming the upper support spring wire 1 is in an upward convex arc shape, and the spring wire section forming the lower support spring wire 3 is in a downward convex arc shape. When the spring structure is compressed by external force, the main spring wire 2 in the spring structure deforms inwards, the upper support spring wire 1 deforms upwards, and the lower support spring wire 3 deforms downwards, so that the spring structure is integrally contracted and elastic energy is stored. When the external force disappears, under the action of the stored elastic energy, the main spring wire 2 in the elastic spring structure expands and deforms outwards, the upper support spring wire 1 deforms downwards, the lower support spring wire 3 deforms upwards, and the elastic spring structure integrally expands to a natural state. The diameter of the outer diameter of the elastic spring structure in a natural state is slightly larger than the diameter of the inner wall of the ventricle when the volume of the ventricle is maximum, namely, the outer diameter determined by the main spring wire 2 is slightly larger than the inner diameter of the inner wall of the ventricle at the corresponding position when the volume of the ventricle is maximum in diastole (end diastole). By "slightly larger" is meant that the resilient spring structure is minimally ensured to conform closely to the inner wall of the ventricle throughout the cardiac cycle.
In the diastole auxiliary equipment of the utility model, the diameters of the upper supporting spring wire 1, the lower supporting spring wire 3 and the main spring wire 2 are the same, and the diameter of the spring wire is preferably 0.5mm-2 mm. The number of the main spring wires 2 is 4-8. The spring wire may be made of titanium alloy, 316L stainless steel, or the like, which has high blood compatibility.
The diastolic aid of the present invention is applied by compressing it beforehand and then implanting it into the ventricle through a small incision in the wall of the ventricle. The main spring wire 2 of many evaginations of evenly arranging after implanting supports the laminating in the heart room inner wall, goes up support spring wire 1 and is close to the valve, and lower support spring wire 3 is close to the apex of the heart, sews up to the ventricular wall through the operation line on lower support spring wire 3 and plays the fixed action, avoids the heart motion to cause the apparatus to shift. The structure of the diastolic assistance device of the present invention mounted in the ventricle is shown in fig. 4 and 5. The positions of the left ventricle 4, right ventricle 5, right atrium 6, left atrium 7 in the heart are simply indicated in the figure. As shown in fig. 4, the spring structure in the left ventricle 4 is in a natural state, in which the left ventricle 4 is in an end-diastole state, in which the ventricular volume is maximum. As shown in fig. 5, when the ventricle contracts, the main spring wire 2 contracts inward by being pressed by the ventricular inner wall, and stores elastic energy. When the ventricles are expanded in a relaxation mode, the main spring wire 2 springs outwards, the upper support spring wire 1 springs downwards, and the lower support spring wire 3 springs upwards simultaneously, and the elastic energy is released together to assist the diastole of the ventricles, so that the state shown in fig. 4 is presented.
More specifically, since the outer contour of the device in its natural state is slightly larger than the diameter of the inner wall of the ventricle when the volume of the ventricle is maximum, the upper support spring wire 1, the main spring wire 2, and the lower support spring wire 3 are fitted to the inner wall of the left ventricle 4 throughout the cardiac cycle. The spring structure is further compressed to store elastic energy as the ventricles contract, and releases the energy as the ventricles relax, thereby assisting in ventricular relaxation.
In general, the instrument made of the spring wire can be compressed and implanted into a heart chamber through a small incision of the heart chamber wall, so that the cardiac wound during operation can be reduced, and the injury to a patient is reduced, thereby being beneficial to shortening the recovery period of the patient; the upper and lower support spring wires are bent outwards to store elastic energy when the main spring wire is pressed, and then rebound along with the main spring wire when the main spring wire rebounds, so that the main spring wire can play a role in strengthening assistance, can also play a role in supporting the main spring wire, and is favorable for avoiding the rebound resilience from weakening or generating deformation after the main spring wire is fatigued; the main spring wire is still compressed to a certain extent when the heart is in the maximum volume, so that the apparatus can be well attached to the inner wall of the heart chamber in the whole cardiac cycle; the main spring wire is in a horn shape and is similar to the shape in the ventricle, so that good fit and reduction of damage to the ventricle wall during instrument action are facilitated; the instrument utilizes the self resilience to assist the diastole, does not generate strong shearing force for damaging blood, does not need a power source and has high reliability; compared with the medicine treatment, the diastolic function of the heart can be immediately enhanced after the apparatus is implanted, a series of symptoms brought to a patient by the diastolic heart failure are quickly relieved, and the diastolic function of the heart is gradually restored to be normal.
Finally, it should be understood that the above-mentioned embodiments are not intended to limit the present invention, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A diastolic assist device, characterized in that the diastolic assist device has an elastic spring structure; the elastic spring structure consists of an upper supporting spring wire, a lower supporting spring wire and a plurality of main spring wires connected between the upper supporting spring wire and the lower supporting spring wire, wherein the main spring wires protrude outwards relative to the upper supporting spring wire and the lower supporting spring wire, and the overall appearance of the elastic spring structure in a natural state is similar to the shape of a left ventricle of a heart; the elastic spring structure contracts to store elastic energy when being extruded by external force, and rebounds outwards to tend to a natural state when the external force disappears.
2. The diastolic aid of claim 1, wherein the outer diameter of the resilient spring structure in its natural state is slightly larger than the diameter of the inner wall of the ventricle at the corresponding position when the volume of the ventricle is maximum.
3. The diastolic aid of claim 1 or 2, wherein the upper support spring wire and the lower support spring wire are each constituted by a spring wire segment connected between two adjacent main spring wires.
4. The diastolic assistance device of claim 3, wherein the spring wire segment is arc-shaped.
5. A diastole auxiliary device as claimed in claim 1 or 2, wherein the resilient spring structure is trumpet shaped as defined by the main spring wire.
6. The diastolic aid of claim 1 or 2, wherein the spring wires of the upper support spring wire, the lower support spring wire and the main spring wire have the same diameter.
7. The diastolic aid of claim 4, wherein the upper support spring wire, the lower support spring wire and the main spring wire have a spring wire diameter of 0.5mm to 2 mm.
8. The diastole auxiliary apparatus according to claim 1 or 2, wherein the number of the main spring wires is 4-8, and the main spring wires are uniformly arranged between the upper support spring wire and the lower support spring wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122445183.6U CN216168097U (en) | 2021-10-11 | 2021-10-11 | Diastole auxiliary instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122445183.6U CN216168097U (en) | 2021-10-11 | 2021-10-11 | Diastole auxiliary instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216168097U true CN216168097U (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122445183.6U Active CN216168097U (en) | 2021-10-11 | 2021-10-11 | Diastole auxiliary instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216168097U (en) |
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2021
- 2021-10-11 CN CN202122445183.6U patent/CN216168097U/en active Active
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