Support

Abstract

The utility model relates to the technical field of medical instruments, and discloses a support which comprises a plurality of annular bodies, a supporting unit and a sensing unit, and the annular bodies are arranged at intervals in the axis direction. The supporting units are connected to the annular body. The support unit is arranged on the annular body, so that the stress stability of the annular body in the expansion process can be improved by the support unit, and compared with an annular support in the related technology, the support provided by the embodiment of the utility model is provided with the support unit, so that the stress in the support can be re-distributed, and the stability of the support is improved. Stress in the support is dispersed, the situation that the use of the support is affected due to breakage of the support caused by stress concentration on the support is avoided, and therefore the technical effect of prolonging the service life of the support is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, concretely relates to support. BACKGROUND

[0002] One of the means of treating blood vessel stenosis is to place an annular support at the position of blood vessel stenosis to increase the size of the stenosis position and ensure smooth blood flow. However, the annular support is a foreign body to the human body, which can cause inflammation of the human body, fibrin deposition, and restenosis in the blood vessel corresponding to the annular support. In severe cases, the stenosis position can block the flow of blood, leading to acute ischemia and endangering human health.

[0003] To avoid restenosis in the annular support, a sensor is provided on the existing annular support, the sensor is wirelessly connected to an external receiver, and the annular support and the sensor cooperate to send the blood flow rate to the external receiver wirelessly, so that medical staff can determine whether restenosis occurs in the annular support according to the blood flow rate.

[0004] However, the annular support is in a contracted state before being placed at the required position of the blood vessel. When the annular support is placed at the required position of the blood vessel, the annular support is expanded by external force. However, the annular support cannot effectively disperse stress during the expansion and deformation process, causing the stress on part of the support to be too large, which can easily cause the support body to break, reducing the service life of the support body. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides a support to solve the problem of cracking caused by excessive local stress of the existing annular support.

[0006] The utility model provides a support, which comprises:

[0007] A plurality of annular bodies are arranged at intervals along the axial direction.

[0008] A support unit is connected to the annular body.

[0009] A sensing unit is connected to the annular body.

[0010] Advantages: By arranging the support unit on the annular body, the support unit can increase the stability of the annular body during expansion. Compared with the annular support in the related art, the support in the utility model can redistribute the stress in the support to disperse the stress in the support, avoid stress concentration on the support, prevent the support from breaking, and affect the use of the support, thereby achieving the technical effect of improving the service life of the support.

[0011] In an alternative embodiment, each of the annular bodies is connected with a plurality of the support units, and the plurality of the support units are arranged at intervals along the circumferential direction of each of the annular bodies.

[0012] Alternatively, the support units on the adjacent two annular bodies are arranged at intervals.

[0013] Alternatively, each of the annular bodies comprises a plurality of support units connected end to end, and the support units are connected between the adjacent two support units.

[0014] Beneficial effects: By arranging a plurality of support units, the reliability of the support units supporting the annular body can be improved, and the uniformity of the stress distribution of the support can be improved.

[0015] By arranging the support units on the adjacent two annular bodies at intervals, the variety of the vertical arrangement of the support units can be improved, and when the support is expanded under external force, the position of the support units can make the support expand uniformly and disperse the stress uniformly, thereby improving the uniformity of the stress dispersion.

[0016] By arranging a plurality of support units connected end to end to form an annular body, the shape of the support unit can be adjusted to improve the uniformity of the stress distribution of the annular body.

[0017] In an alternative embodiment, the support units have a conductive function, one of the adjacent two annular bodies is connected with one end of the support unit, and the other end of the support unit is arranged at intervals from the other annular body.

[0018] Alternatively, the support units have a non-conductive function, and each of the support units is connected with one of the annular bodies at one end and / or the other end.

[0019] Beneficial effects: By arranging the support units to have a conductive function, the support units, the annular body, and the connecting unit can be integrally formed, so that no additional fixing points are needed between the support units, the annular body, and the connecting unit, thereby improving the reliability of the support structure. Meanwhile, one of the adjacent two annular bodies is connected with one end of the support unit, and the other end of the support unit is arranged at intervals from the other annular body. Based on this, the support unit can be avoided as a signal transmission path, thereby improving the signal strength transmitted to the sensing unit.

[0020] Alternatively, by supporting the unit has a non-conductive function, also can avoid the support unit as a way of signal transmission, so as to enhance the transmission to the sensor unit signal strength technical effect.

[0021] In an alternative embodiment, the bracket comprises a connecting unit, two ends are electrically connected to the adjacent two annular body.

[0022] Beneficial effect: through the connecting unit can be adjacent to two annular body electrical connection, in order to signal through multiple annular body transmission to the position of the sensor unit.

[0023] In an alternative embodiment, each adjacent two annular body is provided with a connecting unit.

[0024] Beneficial effect: by limiting each adjacent two annular body is provided with a connecting unit, so that the signal is only along a connecting unit transmission to the sensor unit, namely the transmission path of the signal is only one, that is, the signal in a ring body is only along a connecting unit transmission to the next annular body, can improve the strength of the signal into the sensor unit, so as to improve the reliability of wireless data acquisition device for signal detection technical effect.

[0025] In an alternative embodiment, the connecting unit on the adjacent two annular body is staggered;

[0026] And / or, the two sides of the connecting unit are respectively provided with a supporting unit;

[0027] And / or, the connecting unit and the annular body are integrally formed.

[0028] Beneficial effect: by limiting the connecting unit on the adjacent two annular body is staggered, can adjust the position of the connecting unit on the two annular body according to the need to ensure that the stress distribution of the bracket is uniform, so as to improve the uniformity of the stress distribution in the bracket technical effect.

[0029] By limiting the two sides of the connecting unit are respectively provided with a supporting unit, can further improve the uniformity of the distance between the connecting unit and its two sides of the supporting unit, so as to improve the uniformity of the stress distribution in the bracket technical effect.

[0030] By limiting the annular body and the connecting unit can be integrally formed, so that the annular body and the connecting unit do not need to be additionally provided with a fixed point, so as to improve the reliability of the bracket structure.

[0031] In an alternative embodiment, the distance between adjacent support units along the circumferential direction of the annular body is equal to the distance between the support units and the connecting units on each of the annular bodies.

[0032] Beneficial effects: By limiting the distance between adjacent support units to be equal to the distance between the support units and the connecting units, the uniformity of the distribution of the support units and the connecting units on the annular stent can be further improved, thereby achieving the technical effect of improving the uniformity of the stress distribution of the support units.

[0033] In an alternative embodiment, the surface of the annular body is provided with a first coating layer for reducing the impedance of the annular body.

[0034] And / or, the surface of the connecting unit is provided with a second coating layer for increasing the smoothness of the connecting unit.

[0035] Beneficial effects: By providing the surface of the annular body with a first coating layer for reducing the impedance of the annular body, the loss of signal transmission in the annular body can be reduced, thereby achieving the technical effect of improving the stability of signal transmission. By providing the surface of the connecting unit with a second coating layer for increasing the smoothness of the connecting unit, the friction between the stent and the blood vessel can be reduced, and the smoothness of the stent entering the blood vessel can be improved, thereby achieving the technical effect of improving the convenience of placing the stent into the patient's body.

[0036] In an alternative embodiment, the first coating layer is a gold coating layer.

[0037] And / or, the second coating layer is a paclitaxel coating layer.

[0038] In an alternative embodiment, the sensing unit is a passive wireless sensor.

[0039] Beneficial effects: By limiting the sensing unit to be a wireless passive sensor, no battery is required, which can save energy and avoid the leakage of electrolyte in the battery from harming human health, thereby achieving the technical effect of improving the safety of the stent. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0041] Figure 1A structure diagram of a stent in the embodiment;

[0042] Figure 2 A structure diagram of a restenosis in the stent in the embodiment;

[0043] Figure 3 A structure diagram of a part of the stent in the embodiment;

[0044] Figure 4 A signal frequency curve diagram of a normal state and a stenosis state in the stent in the embodiment.

[0045] Explanation of reference signs:

[0046] 1, annular body; 101, stent unit;

[0047] 2, connecting unit; 3, supporting unit; 4, sensing unit; 5, thrombus. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0049] The embodiments of the utility model will be described in combination with Figures 1 to 4

[0050] According to the embodiments of the utility model, a stent is provided, which comprises:

[0051] A plurality of annular bodies 1 are arranged at intervals along the axial direction;

[0052] A supporting unit 3 is connected to the annular body 1;

[0053] A sensing unit 4 is connected to the annular body 1.

[0054] In the stent in the embodiment, the supporting unit 3 is arranged on the annular body 1, so that the supporting unit 3 can increase the stability of the annular body 1 under stress during expansion. Compared with the annular stent in the related art, the stent in the embodiment can redistribute the stress in the stent by arranging the supporting unit 3, so as to disperse the stress in the stent and avoid the fracture of the stent caused by the stress concentration on the stent, thereby affecting the use of the stent, so as to achieve the technical effect of improving the service life of the stent.

[0055] ​Each annular body 1 includes multiple support units 101 connected end to end, and a support unit 3 is connected between two adjacent support units 101. By setting multiple support units 101 connected end to end to form an annular body 1, the stress distribution uniformity of the annular body 1 can be improved by adjusting the shape of the support units 101.

[0056] Furthermore, the support unit 101 is made of metal, such as nickel-titanium alloy, and can be in the shape of a sine wave. The sine wave shape reduces the sharpness of the internal structure of the annular body 1, further preventing stress concentration within the annular body 1, thereby improving the reliability of the support. Alternatively, the support unit 101 can be made of cobalt-chromium alloy.

[0057] Of course, in other embodiments, the material of the support unit 101 can be adjusted as needed.

[0058] In other embodiments, the shape of the support unit 101 can be adjusted as needed.

[0059] In addition, in this embodiment, a wireless data acquisition device is installed on the outside of the bracket. This wireless data acquisition device is communicatively connected to the sensing unit 4 and can receive signals emitted by the sensing unit 4. The wireless data acquisition device is a mature technology and will not be described in detail here.

[0060] In addition, combined Figure 3 As shown, in this embodiment, the bracket includes a connecting unit 2, along... Figure 3 The two ends in the vertical direction shown are electrically connected to two adjacent annular bodies 1 respectively. The two adjacent annular bodies 1 can be electrically connected through the connecting unit 2 so that the signal can be transmitted to the position of the sensing unit 4 through multiple annular bodies 1.

[0061] Preferably, a connecting unit 2 is provided between every two adjacent ring bodies 1. Based on this, the signal flows only unidirectionally to the location of the sensing unit 4. Compared to related technologies that use multiple connecting units 2, this embodiment avoids the increased signal transmission paths and reduced signal strength along each path, leading to signal transmission instability. In this embodiment, the signal is transmitted to the sensing unit 4 along only one connecting unit 2, meaning there is only one signal transmission path. This increases the signal strength entering the sensing unit 4, thereby improving the reliability of signal detection by the wireless data collector. Alternatively, multiple connecting units 2 can be provided between every two adjacent ring bodies 1.

[0062] In addition, in combination with Figure 3 As shown in the drawings, in the embodiment, each annular body 1 is connected with a plurality of support units 3, and the plurality of support units 3 are arranged at intervals along the circumferential direction of each annular body 1. By arranging the plurality of support units 3, the support force of the support unit 3 on the annular body 1 can be increased, thereby improving the reliability of supporting the annular body 1, and the uniformity of the stress distribution in the bracket can also be improved. As an alternative embodiment, each annular body 1 can be connected with one support unit 3.

[0063] Further, the support units 3 on the adjacent two annular bodies 1 are arranged staggered. Of course, in other embodiments, the support units 3 on the adjacent two annular bodies 1 can be arranged opposite. Compared with other embodiments, the arrangement of the support units 3 on the adjacent two annular bodies 1 in the embodiment can increase the variety of the vertical arrangement positions of the support units 3, and when the bracket is expanded under external force, the position of the support unit 3 in the embodiment can make the bracket expand uniformly and realize uniform dispersion of stress, thereby improving the uniformity of stress dispersion. Figure 3 Further, the support units 3 on the adjacent two annular bodies 1 are arranged staggered. Of course, in other embodiments, the support units 3 on the adjacent two annular bodies 1 can be arranged opposite. Compared with other embodiments, the arrangement of the support units 3 on the adjacent two annular bodies 1 in the embodiment can increase the variety of the vertical arrangement positions of the support units 3, and when the bracket is expanded under external force, the position of the support unit 3 in the embodiment can make the bracket expand uniformly and realize uniform dispersion of stress, thereby improving the uniformity of stress dispersion.

[0064] Of course, in other embodiments, according to the design of the bracket, only the following can be limited: each annular body 1 is connected with a plurality of support units 3, and the plurality of support units 3 are arranged at intervals along the circumferential direction of each annular body 1; or only the support units 3 on the adjacent two annular bodies 1 are arranged staggered; or only each annular body 1 includes a plurality of bracket units 101 connected end to end, and the support unit 3 is connected between the adjacent two bracket units 101.

[0065] In other embodiments, the following combinations of any two structures can also be used: each annular body 1 is connected with a plurality of support units 3, and the plurality of support units 3 are arranged at intervals along the circumferential direction of each annular body 1; the support units 3 on the adjacent two annular bodies 1 are arranged staggered; and each annular body 1 includes a plurality of bracket units 101 connected end to end, and the support unit 3 is connected between the adjacent two bracket units 101.

[0066] In addition, in the embodiment, the support unit 3 has a conductive function, at this time, the support unit 3, the annular body 1 and the connecting unit 2 can be integrally formed, so that no additional fixing position needs to be arranged between the support unit 3, the annular body 1 and the connecting unit 2, thereby improving the reliability of the bracket structure.

[0067] Further, one of the two adjacent annular bodies 1 is connected with one end of the support unit 3, and the other end of the support unit 3 is arranged apart from the other one of the two adjacent annular bodies 1. Based on this, the support unit 3 can be avoided as a signal transmission path, so as to achieve the technical effect of improving the signal strength transmitted to the sensing unit 4.

[0068] Of course, in other embodiments, the support unit 3 has a non-conductive function, for example, the material of the support unit 3 can be ceramic or plastic, and one end of each support unit 3 is connected with one annular body 1, and the other end of each support unit 3 is connected with the other annular body 1, and the same can be achieved. The signal is transmitted only along one annular body 1 and one connecting unit 2 to the other annular body 1, and then to the position of the sensing unit 4. Among them, only the connecting unit 2 is integrally formed with the annular body 1.

[0069] As a variable implementation, the support unit 3 can also have a non-conductive function, and one end of each support unit 3 is connected with one annular body 1, and the other end of each support unit 3 is arranged apart from the other annular body 1.

[0070] In addition, in combination with Figure 3 As shown in the figure, the connecting units 2 on the two adjacent annular bodies 1 are staggered, based on which the positions of the connecting units 2 on the two adjacent annular bodies 1 can be adjusted as needed to ensure that the stress distribution on the bracket is uniform, thereby achieving the technical effect of improving the uniformity of stress distribution in the bracket.

[0071] Further, one support unit 3 is symmetrically arranged on both sides of the connecting unit 2, which can further improve the uniformity of the distance between the connecting unit 2 and the support units 3 on both sides thereof, thereby achieving the technical effect of improving the uniformity of stress distribution in the bracket.

[0072] Of course, in other embodiments, according to different designs of the bracket, only the connecting units 2 on the two adjacent annular bodies 1 can be staggered, or only one support unit 3 can be symmetrically arranged on both sides of the connecting unit 2, or only the connecting unit 2 can be integrally formed with the annular body 1.

[0073] In addition, in this embodiment, on each annular body 1, the distance between adjacent support units 3 along the circumferential direction of the annular body 1 is equal to the distance between the support unit 3 and the connecting unit 2. Based on this, the uniformity of the distribution between the multiple support units 3 and the connecting unit 2 on one annular bracket can be improved, thereby achieving the technical effect of improving the uniformity of stress distribution of the support unit 3.

[0074] Of course, in other embodiments, depending on the design of the bracket, the distance between adjacent support units 3 and the distance between support unit 3 and connecting unit 2 may be different along the circumference of each annular body 1.

[0075] In addition, in this embodiment, the surface of the annular body 1 is provided with a first coating. The first coating is used to reduce the impedance of the annular body 1, which can reduce the signal transmission loss in the annular body 1, thereby achieving the technical effect of improving the stability of signal transmission.

[0076] The first coating can be a gold coating. Alternatively, the first coating can be a copper coating.

[0077] In addition, in this embodiment, the surface of the connecting unit 2 is provided with a second coating. The second coating is used to increase the smoothness of the connecting unit 2, so as to reduce the friction between the stent and the blood vessel, improve the smoothness of the stent entering the blood vessel, thereby achieving the technical effect of improving the ease of placing the stent into the patient's body.

[0078] The second coating is a Parylene C (Parylene Cyclohexane) coating. As an alternative implementation, the second coating can also be a polytetrafluoroethylene (PTFE) coating.

[0079] Of course, in other embodiments, depending on the design of the bracket, the first coating may be provided only on the surface of the annular body 1, or the second coating may be provided only on the surface of the connecting unit 2.

[0080] In this embodiment, the sensing unit 4 is a passive wireless sensor, which can be a MEMS (Micro-Electro-Mechanical System) passive wireless pressure sensor. The types of sensing units 4 and the communication connection between the wireless data acquisition device and the sensing unit 4 are mature technologies, and will not be described in detail here.

[0081] Specifically, a resonant circuit is formed between the sensing unit 4 and multiple ring-shaped bodies 1, allowing the sensing unit 4 to emit signals of different frequencies depending on the blood flow velocity. Figure 4 As shown, where Figure 4 Y-axis S 11 This refers to return loss, and the X-axis refers to frequency. Because the blood flow velocity in a normal blood vessel differs from that in a restenotic vessel, the signal frequency emitted by sensing unit 4 differs. This difference in signal frequency is used to determine whether restenosis has occurred within the stent. If restenosis is confirmed, further examination and treatment are required.

[0082] Among them, combined Figure 2As shown, restenosis refers to the case that after the stent is installed in the blood vessel, the inner wall of the blood vessel grows a thrombus 5 through the stent, which can cause the case of restenosis in the blood vessel.

[0083] Of course, in other embodiments, the types of passive wireless sensors can be replaced as needed.

[0084] In other embodiments, the sensing unit 4 can also be a wireless active sensor. Compared with other embodiments, by limiting the sensing unit 4 to be a wireless passive sensor in this embodiment, a battery does not need to be arranged, energy is saved, the case of electrolyte leakage in the battery endangering human health is avoided, and the technical effect of improving the safety of the use of the stent is achieved.

[0085] In addition, in combination with Figure 1 and Figure 2 As shown, the sensing unit 4 is connected to the annular body 1 at one end of the stent, that is, the annular body 1 is Figure 1 As shown, the sensing unit 4 is connected to the annular body 1 at the lowermost end of the stent.

[0086] Specifically, the sensing unit 4 can be welded and fixed with the annular body 1, the annular body 1 is connected to another annular body 1 along the upper side Figure 1 As shown, the sensing unit 4 is connected to another annular body 1 along the lower side Figure 1 As a transformable embodiment, it can also be that the sensing unit 4 is connected to the annular body 1 along the upper side Figure 1 As shown, the sensing unit 4 is arranged on the annular body 1 at the uppermost end of the stent.

[0087] Further, the sensing unit 4 is provided with one. As a transformable embodiment, the number of sensing units 4 can be adjusted according to the design of the stent.

[0088] Further, the length and width of the sensing unit 4 in this embodiment are both less than 2 mm, and the thickness is less than 300 μm, so that the influence of the arrangement of the sensing unit 4 on the blood flow is reduced. As a transformable embodiment, the size of the sensing unit 4 can be adjusted according to the design of the stent.

[0089] Of course, in other embodiments, the connection mode between the sensing unit 4 and the annular body 1 can be adjusted according to the design of the stent, for example, the sensing unit 4 is fixedly connected to the annular body 1 by glue.

[0090] In other embodiments, the position of the sensing unit 4 can also be adjusted according to the design of the stent, for example, the sensing unit 4 is arranged on the annular body 1 which is connected to another annular body 1 at both ends. Compared with other embodiments, the sensing unit 4 is arranged on the annular body 1 which is connected to another annular body 1 along the upper side Figure 1 Figure 1In the horizontal direction shown, there is no coincident position between the setting position of the sensing unit 4 and the setting position of the annular body 1 in the embodiment, avoiding the existence of the coincident position between the setting position of the sensing unit 4 and the setting position of the annular body 1, causing the blood flow speed to be accelerated at the coincident position of the sensing unit 4 and the annular body 1, and affecting the physical health of the patient, so as to achieve the technical effect of reducing the influence of the setting of the sensing unit 4 on the blood flow speed.

[0091] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A stent, characterized by, The application relates to a support device for a plurality of ring-shaped bodies (1) arranged along an axis, comprising: a plurality of ring-shaped bodies (1) arranged along an axis; a support unit (3) connected to the ring-shaped bodies (1); and a sensing unit (4) connected to the ring-shaped bodies (1). Each of the ring-shaped bodies (1) is connected to a plurality of support units (3), and the plurality of support units (3) are arranged along the circumferential direction of the ring-shaped bodies (1); And / or, the support units (3) on adjacent two ring-shaped bodies (1) are arranged alternately; And / or, each of the ring-shaped bodies (1) comprises a plurality of support units (101) connected end to end, and the support units (3) are connected between adjacent two support units (101).

2. The stent of claim 1, wherein The support units (3) have a conductive function, one of the adjacent two ring-shaped bodies (1) is connected to one end of the support unit (3), and the other end of the support unit (3) is arranged away from the other ring-shaped body (1); Or, the support units (3) have a non-conductive function, and one end of each of the support units (3) is connected to one of the ring-shaped bodies (1), and / or the other end of each of the support units (3) is connected to the other ring-shaped body (1). The support unit comprises a connecting unit (2), and two ends of the connecting unit (2) are electrically connected to adjacent two ring-shaped bodies (1).

3. The stent of claim 1, wherein One connecting unit (2) is arranged between each of the adjacent two ring-shaped bodies (1). The connecting units (2) on the adjacent two ring-shaped bodies (1) are arranged alternately; 4. The stent defined in any one of claims 1-3, wherein, And / or, one support unit (3) is symmetrically arranged on the two sides of the connecting unit (2); 5. The stent of claim 4, wherein, And / or, the connecting unit (2) is integrally formed with the ring-shaped body (1).

6. The stent defined in Claim 4, wherein, On each of the ring-shaped bodies (1), the distance between adjacent support units (3) along the circumferential direction of the ring-shaped body (1) is equal to the distance between the support unit (3) and the connecting unit (2). The surface of the ring-shaped body (1) is provided with a first coating, and the first coating is used for reducing the impedance of the ring-shaped body (1); And / or, the surface of the connecting unit (2) is provided with a second coating, and the second coating is used for increasing the smoothness of the connecting unit (2).

7. The stent defined in Claim 4, wherein, The first coating is a gold coating; 8. The stent defined in Claim 4, wherein, And / or, the second coating is a parylene coating. The sensing unit (4) is a passive wireless sensor.

9. The stent defined in Claim 8, wherein, ​ ​ 10. The stent defined in any one of claims 1-3, wherein, ​

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