Implant and implant system

Abstract

The invention provides an implant and an implant system. The implant is used for being implanted into a target part in a living body. The implant includes a stent. The stent is used for being arranged at a target part to improve the physiological function of an organism, the stent comprises a cylindrical main body made of a metal material, an opening is formed in the circumferential surface of the cylindrical main body, and the opening is distributed in at least part of the length range of the cylindrical main body in an extending mode and at least provided with a first open end. The implant provided by the present disclosure contributes to smooth transmission of wireless signals.

Description

Technical Field

[0001] The present disclosure relates to the field of medical devices, and in particular, to an implant and an implant system. Background Art

[0002] Heart failure is a clinical syndrome caused by abnormal ventricular filling and ejection function. The main manifestations of heart failure are dyspnea, fatigue and fluid retention (pulmonary congestion, systemic congestion and peripheral edema). Heart failure can be divided into three categories, namely heart failure with reduced ejection fraction, heart failure with mildly reduced ejection fraction and heart failure with preserved ejection fraction. In patients with chronic heart failure with preserved ejection fraction and reduced ejection fraction, persistently elevated left atrial pressure is the main cause of pulmonary congestion, and 90% of heart failure patients are hospitalized for this reason.

[0003] Atrial shunt surgery is a means of improving left atrial hypertension. It guides the blood flow from the left atrium to the right atrium by making a hole in the atrial septum, thereby reducing the load on the left atrium. Atrial shunt surgery is divided into implant shunt and non-implant shunt. Implant shunt requires the implant to be fixed in the artificially formed atrial septum hole to keep the hole open. Currently, atrial septum puncture and implant fixation are generally performed through vascular intervention. The specific process is to accommodate the device or shunt in the catheter, and send the device or shunt with the catheter through the human artery or vein to the site of the heart disease for operation. Due to the limited diameter of the blood vessel, the corresponding catheter diameter is also limited, so the shunt needs to be kept in a compressed state in the catheter first, and then automatically or passively expand to a predetermined size after it is removed from the catheter when it reaches the target site.

[0004] In addition to the shunts suitable for patients with heart failure mentioned above, there are other stent-type implants suitable for setting in the heart or blood vessels for patients with cardiovascular diseases. For example, some patients need to set occluders in their hearts or blood vessels to improve cardiovascular function, and patients with vascular stenosis may need to implant vascular stents. However, in addition to treating related symptoms through implants, other components that need to communicate wirelessly with the outside world may also need to be implanted in the patient's body, such as wireless monitoring devices that monitor the hemodynamic parameters of the patient's cardiovascular system. For patients with heart failure, in addition to surgical treatment, atrial pressure monitoring is also an important health management method. Therefore, under certain conditions, a wireless pressure monitoring device will be installed on the atrial septum. However, since stents are usually mesh structures made of metal wires woven or cut from pipes, the mesh structure will interfere with or even shield the wireless signal transmission of wireless communication components. On the other hand, if the pressure monitoring device is set axially at the proximal or distal end of the stent, the pressure monitoring device will increase the overall structural length, hinder the normal flow of blood, affect the size of the stent port, and create a risk of long-term stenosis. Summary of the invention

[0005] In view of this, the present disclosure provides an implant and an implant system for solving at least part of the aforementioned problems.

[0006] In a first aspect, an implant is provided for implantation into a target site in a living body. The implant includes a stent. The stent is used to be arranged at the target site to improve the physiological function of the living body, and the stent includes a cylindrical body made of a metal material, and an opening is arranged on the circumference of the cylindrical body, and the opening extends and is distributed over at least a part of the length of the cylindrical body and has at least a first open end.

[0007] In a possible implementation, the openings are distributed over the entire length of the cylindrical body and also have a second open end.

[0008] In combination with the above possible implementations, in another possible implementation, the opening extends in a spiral, straight or wavy form on the circumferential surface of the cylindrical body.

[0009] In combination with the above possible implementations, in another possible implementation, when the opening extends in a spiral form on the circumference of the cylindrical body, it extends at least twice on the circumference of the cylindrical body.

[0010] In combination with the above possible implementations, in another possible implementation, the cylindrical body is formed by spirally winding an elastic curved segment, and the gap between two adjacent turns of the elastic curved segment forms an opening; the elastic curved segment is a metal wire or a metal strip cut from a metal piece.

[0011] In combination with the above possible implementation methods, the elastic curve segment extends one circle in a ring form in the circumferential direction from the starting position, then extends one or more circles upward in a spiral form, and then extends one circle in a ring form, thereby forming the cylindrical body; in another possible implementation method, the elastic curve segment is a wavy metal segment.

[0012] In combination with the above possible implementations, in another possible implementation, the opening divides the cylindrical body into an open-loop structure having a C-shaped axial profile projection surface, and the open-loop structure has a first end and a second end opposite to each other.

[0013] In combination with the above possible implementation manner, in another possible implementation manner, the first end portion and the second end portion are not in contact with each other, or are staggered in the circumferential direction or radial direction.

[0014] In combination with the above possible implementations, in another possible implementation, the cylindrical body has a mesh structure, and the mesh structure is woven from metal wires or cut from metal parts.

[0015] In combination with the above possible implementations, in another possible implementation, when the open-loop structure is compressed, a stacked structure having a spiral axial profile projection surface is formed, and the first end is wound from the inner side of the second end toward the center.

[0016] In combination with the above possible implementation methods, in another possible implementation method, it also includes a wireless sensor, which includes a detection element and a wireless signal transmission element. The detection element is used to obtain the target physiological parameters, and the wireless signal transmission element is used to transmit the target physiological parameters obtained by the detection element to the outside of the biological body.

[0017] In combination with the above possible implementations, in another possible implementation, in a working state, the wireless sensor is located outside the cylindrical body, and when the cylindrical body is compressed, the wireless sensors are located side by side outside the cylindrical body; or, in a working state, the wireless sensor is located inside the cylindrical body, and when the cylindrical body is compressed, the wireless sensor is located inside the cylindrical body.

[0018] In combination with the above possible implementations, in another possible implementation, the wireless sensor further includes a shell, and the detection element is located at one end of the shell and protrudes a predetermined distance relative to the cylindrical body along the length direction of the shell.

[0019] In combination with the above possible implementations, in another possible implementation, the bracket also includes a clamping arm group, the clamping arm group includes at least a first clamping arm and a second clamping arm, the first clamping arm and the second clamping arm are distributed on the outer periphery of the cylindrical body at intervals along the axial direction of the cylindrical body, and the first clamping arm and the second clamping arm each form a cantilever protruding from the outer periphery of the cylindrical body.

[0020] In combination with the above possible implementations, in another possible implementation, the first clamping arm and / or the second clamping arm is formed by bending an elastic metal wire or a metal strip, and / or the first clamping arm and / or the second clamping arm has a U-shaped or V-shaped structure formed by the elastic metal wire or metal strip extending radially a predetermined distance and then folding back.

[0021] In combination with the above possible implementation manner, in another possible implementation manner, the first clamping arm and / or the second clamping arm are integrally formed with the cylindrical body.

[0022] In combination with the above possible implementations, in another possible implementation, the stent further includes a coating, which is applied on the inner side and / or outer side of the cylindrical body, and the coating is made of an insulating material.

[0023] In a second aspect, an implant system is provided, comprising a delivery catheter and an implant. The implant is any implant described in the first aspect, and when the implant is disposed in the catheter, it is in a compressed state, and the implant can extend from the catheter.

[0024] In a possible implementation, the cylindrical body is compressed into a structure whose axial contour projection surface is C-shaped, spiral-shaped, or wavy closed loop; when the cylindrical body is compressed into a structure whose axial contour projection surface is C-shaped, the outer surface of the compressed cylindrical body at least partially surrounds the wireless sensor; when the cylindrical body is compressed into a structure whose axial contour projection surface is spiral-shaped, the wireless sensors are located side by side outside the cylindrical body, or the wireless sensors are located inside the cylindrical body; when the cylindrical body is compressed into a structure whose axial contour projection surface is a wavy closed loop, the wireless sensor is located inside the cylindrical body.

[0025] In combination with the above possible implementation manner, in another possible implementation manner, a signal receiving device is further included, and the signal receiving device is used to transmit signals to the wireless sensor in the implant.

[0026] The implant provided by the present disclosure includes a cylindrical body made of metal material. The opening arranged on the circumference of the cylindrical body has at least a first open end, and the first open end makes the entity structure enclosing the opening have no circumferential closed loop structure in at least one axial region, thereby reducing the interference of the cylindrical body made of metal material to the wireless signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments are briefly introduced below.

[0028] It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and should not be viewed as limiting the scope.

[0029] It should also be understood that the same or similar reference numerals are used in the drawings to represent the same or similar elements.

[0030] It should also be understood that the drawings are merely schematic and that the sizes and proportions of elements in the drawings are not necessarily accurate.

[0031] Figure 1 is a schematic structural diagram of a target site m1 in a living body according to an embodiment of the present disclosure.

[0032] Figure 2 Schematic diagram of the structure of an implant according to an embodiment of the present disclosure.

[0033] Figure 3 yes Figure 2 Schematic diagram of the structure of the implant without the covering.

[0034] Figure 4 yes Figure 2 Schematic diagram of the structure of the elastic curve section of the cylindrical body of the implant.

[0035] Figure 5 yes Figure 2 Schematic diagram of the structure of the implant after omitting the wireless sensor.

[0036] Figure 6 It is an enlarged schematic diagram of the junction between the upper and lower sections of the rear cylindrical body with the sensor omitted.

[0037] Figure 7 FIG. 4 is a schematic diagram of a compressed state of the implant according to the aforementioned embodiment when it is located in a delivery tube.

[0038] Figure 8 for Figure 7 Schematic diagram of the axial profile projection of the delivery tube and implant.

[0039] Fig. 9 is a schematic diagram of the delivery tube containing the implant when it reaches the target site.

[0040] Fig.10 It is a schematic diagram of an implant extending one end from a delivery tube and a first clamping arm.

[0041] Fig.11 It is a schematic diagram of withdrawing the delivery tube so that the first clamping arm of the implant reaches the surface of the atrial septum.

[0042] Fig.12 It is a schematic diagram of the implant being installed at the target site after the delivery tube is removed.

[0043] Fig.13 is a schematic structural diagram of an implant according to another embodiment of the present disclosure.

[0044] Fig.14 yes Fig.13 Schematic diagram of the axial profile projection structure of the implant located in the delivery tube.

[0045] Fig.15 is a schematic structural diagram of an implant according to another embodiment of the present disclosure.

[0046] Fig.16 yes Fig.15 Schematic diagram of the axial profile projection structure of the implant located in the delivery tube.

[0047] Fig.17 is a schematic structural diagram of an implant according to another embodiment of the present disclosure.

[0048] Fig.18 yes Fig.17 Schematic diagram of the structure of the stent after the wireless sensor is omitted in the implant.

[0049] Fig.19 yes Fig.18Schematic diagram of the axial profile projection surface structure of the middle bracket in the first state.

[0050] Fig. 20 yes Fig.18 Schematic diagram of the axial profile projection surface structure of the middle bracket in the second state.

[0051] Fig.21 yes Fig.17 Schematic diagram of the axial profile projection structure of the implant when it is located in the delivery tube.

[0052] Fig. 22 It is a schematic diagram of the axial profile projection surface structure of the implant when it is located in the delivery tube in an optional embodiment.

[0053] Fig.23 It is a schematic structural diagram of a cylindrical body of an implant according to another embodiment of the present disclosure.

[0054] Fig.24a The figure is a schematic diagram of the longitudinal profile projection surface shape of the cylindrical body in an optional implementation manner.

[0055] Figure 24b It is a schematic diagram of the longitudinal profile projection surface shape of the cylindrical body in another optional implementation manner.

[0056] Fig.24c It is a schematic diagram of the longitudinal profile projection surface shape of the cylindrical body in another optional implementation manner.

[0057] Fig.24d It is a schematic diagram of the longitudinal profile projection surface shape of the cylindrical body in another optional implementation manner.

[0058] Fig.24e It is a schematic diagram of the longitudinal profile projection surface shape of the cylindrical body in another optional implementation manner. DETAILED DESCRIPTION

[0059] The following is an exemplary description of the embodiments of the present disclosure in conjunction with the accompanying drawings. It should be understood that the present disclosure can be implemented in a variety of ways and should not be construed as being limited to the embodiments described here. The embodiments described here are only for a more thorough and complete understanding of the present disclosure.

[0060] It should be understood that the term "including" and its variations used in the present disclosure are open inclusions, that is, "including but not limited to." The term "based on" means "at least in part based on", and the term "plurality" means "two or more".

[0061] It should be understood that although the terms “first” or “second” etc. are used in the present disclosure to describe various elements, these elements are not limited by these terms, and these terms are only used to distinguish one element from another.

[0062] The present disclosure provides an implant for implantation into a target part in a living body to improve the physiological function of the living body and obtain target physiological parameters. The implant includes a stent, which can specifically be a mesh structure such as a shunt, an occluder or a vascular stent. The stent is used to be arranged at the target part. The stent includes a cylindrical main body made of a metal material, and the circumference of the cylindrical main body is provided with an opening, and the opening extends and is distributed over at least a part of the length of the cylindrical main body and has at least a first open end. The opening provided on the circumference of the cylindrical main body has at least a first open end, and the first open end makes the physical structure of the stent forming the opening have no metal closed-loop structure at any circumferential surface position, thereby reducing the interference of the cylindrical main body made of metal material to the wireless signal.

[0063] Figure 1 It is a schematic diagram of the structure of the target part m1 in a biological body according to an embodiment of the present disclosure. Specifically, the target part m1 is a hole on the atrial septum m2 between the left atrium and the right atrium. The hole can be an unclosed foramen ovale or an artificial hole. For some patients with heart failure, the hole can reduce the pressure in the left atrium and relieve the symptoms of heart failure. The stent provided in the embodiment of the present disclosure is a shunt, which can be arranged in the hole to maintain the shape of the hole and guide blood to flow from the left atrium to the right atrium.

[0064] In this embodiment, the implant may further include a wireless sensor, the wireless sensor including an electrically connected detection element and a wireless signal transmission element, the detection element is used to obtain a target physiological parameter, and the wireless signal transmission element is used to transmit the target physiological parameter obtained by the detection element to the outside of the biological body. At least a portion of the wireless sensor may be disposed inside or outside the cylindrical body, and both may transmit wireless signals.

[0065] Preferably, the wireless sensor is arranged at the middle position of the outer peripheral surface of the shunt, so when the implant in this embodiment is arranged on the atrial septum m2, the wireless sensor and the bracket are arranged together in the target part m1 and are close to the target part. Further, two detection elements can be arranged at both ends of the wireless sensor to obtain the pressure data of the left atrium and the right atrium at the same time, or only one detection element can be arranged at one end to obtain the pressure data of the left atrium only.

[0066] refer to Figures 2 to 5 , Figures 2 to 5 Schematic diagram of the structure of an implant according to an embodiment of the present disclosure. Figure 2 Schematic diagram of the structure of an implant according to an embodiment of the present disclosure. Figure 3 yes Figure 2 FIG. 1 is a schematic diagram of the structure of the implant without the covering film 120. FIG. Figure 4 yes Figure 2 Schematic diagram of the structure of the elastic curve section 101 of the cylindrical body 110 of the implant. Figure 5 yes Figure 2 FIG. 1 is a schematic diagram of the structure of the implant without the wireless sensor 200. FIG.

[0067] The implant includes a bracket 100, a wireless sensor 200 and a connector 300. The bracket 100 and the wireless sensor 200 are arranged side by side, and the connector 300 connects the two into one. It should be understood that the "side by side" in the present invention is not limited to parallel arrangement, and the bracket 100 and the wireless sensor can also be in a positional relationship with a predetermined angle (but not a vertical positional relationship). The "side by side" in the present invention is not limited to the outer surfaces of the two being against each other, and the wireless sensor can also be arranged in the bracket 100, and the outer surface of the wireless sensor is against the inner surface of the bracket 100. Of course, preferably, the bracket 100 and the wireless sensor 200 are arranged in parallel, and when the main body of the bracket is a cylindrical structure and the wireless sensor 200 is also a cylindrical structure, under the action of the joint section of the connector and the bracket, the wireless sensor 200 and the bracket 100 present an externally cut shape. Such a design, compared with other methods of setting the sensor 200 outside the stent 100, can make the implant have a smaller radial dimension during the delivery process, so as to be easier to be pressed and gripped in the delivery device. Compared with the method of setting the sensor 200 inside the stent 100, it can avoid the sensor 200 interfering with the blood flow in the stent 100.

[0068] In this embodiment, the stent 100 includes a cylindrical body 110, a first clamping arm 112, a second clamping arm 113 and a coating 120. The cylindrical body 110 is a cylindrical structure in which an elastic curved segment 101 is spirally wound, and is roughly cylindrical. The elastic curved segment 101 is a metal wire. The elastic curved segment 101 is wound in a spiral form for multiple turns to form a hollow cylindrical structure. In this embodiment, the elastic curved segment 101 is wound five times along the spiral winding path 160 to form a first coil 1011, a second coil 1012, a third coil 1013, a fourth coil 1014 and a fifth coil 1015. An opening 130 is formed between two adjacent coils to connect the inside and outside of the cylindrical structure in the radial direction. In other words, the opening 130 is an irregular strip-shaped hollow portion that extends spirally on the circumferential surface of the cylindrical structure, and along the extension direction, the two ends of the hollow portion are respectively a first open end 131 and a second open end 132. In this way, it is equivalent to that the opening 130 is distributed over the entire length of the cylindrical body 110, and the two ends of the opening 130 are not closed, so that there is no closed metal ring structure in the entire cylindrical body. In some optional embodiments, the opening 130 can be closed at one end, such as the end of the metal wire at the first open end 131 is closed by contacting the fifth coil 1015. Since the opening 130 does not form any metal ring structure forming a closed loop in the entire cylindrical body, no matter whether the wireless sensor 200 is arranged inside or outside the cylindrical body 110, its signal transmission will not be affected by the cylindrical body 110. Compared with the prior art, when the wireless sensor 200 is arranged inside the cylindrical body 110, the performance of signal transmission can be significantly improved, and when the wireless sensor 200 is arranged outside the cylindrical body 110, the interference of the cylindrical body 110 on signal transmission can also be reduced.

[0069] The first clamping arm 112 and the second clamping arm 113 extend radially outward from the surface of the tubular body 110 to form a cantilever structure. The first clamping arm 112 and the second clamping arm 113 form at least one clamping arm group, which are used to be distributed on both sides of the atrial septum m2 to clamp the atrial septum m2. Preferably, the tubular body 110, the first clamping arm 112 and the second clamping arm 113 are all formed by winding and bending the elastic curve segment 101.

[0070] The cylindrical body 110 is divided into an upper tube 10 and a lower tube 20. The number of the first clamping arm 112 and the second clamping arm 113 are both 3. The 3 first clamping arms 112 are evenly distributed on the surface of the upper tube 10. The 3 second clamping arms 113 are evenly distributed on the surface of the lower tube 20. A part of the elastic curve segment 101 extends in a wave-like manner in the axial direction and at the same time spirals and extends as a whole in the circumferential direction to form a mesh cylinder; another part of the elastic curve segment 101 extends radially outward from the surface of the mesh cylinder and then folds back to the surface of the cylinder to form a U-shaped clamping arm. Specifically, in the process of spirally extending in the circumferential direction to form a mesh cylinder, the elastic curve segment 101 also extends radially outward from the surface of the mesh cylinder and then folds back to the surface of the cylinder to form a roughly U-shaped clamping arm.

[0071] In other embodiments, the opening 130 may also exist only in a section of the cylindrical body, such as the upper section 10 of the cylindrical body, and the wireless sensor 200 is disposed inside or outside the upper section 10. The cylindrical body 110 may also include a plurality of elastic curve segments 101 that are not directly connected, and these elastic curve segments 101 may be kept in a relative position unchanged by the coating 120 to achieve indirect connection. The cylindrical body 110 may also be cut from a metal piece, and the elastic curve segment 101 and / or the clamping arm group are metal strips cut from a metal piece, and the metal piece may be a metal tube or a metal sheet; when the metal piece is a metal sheet, the cylindrical body 110 is formed by cutting and winding the metal sheet, and the elastic curve segment and the clamping arm group are integrally formed.

[0072] Furthermore, the three first clamping arms 112 and the three second clamping arms 113 form three clamping arm groups. The first clamping arm 112 and the second clamping arm 113 of each clamping arm group are spaced apart in the axial direction. The first clamping arm 112 is connected to the first end ( Figure 2 The second clamping arm 113 and the second end ( Figure 2The first clamping arm 112 and the second clamping arm 113 have a second predetermined spacing. The free end of the first clamping arm 112 overlaps with the free end of the second clamping arm 113 in the axial projection, and the fixed end of the first clamping arm 112 and the fixed end of the second clamping arm 113 are staggered in the axial projection, so as to achieve a larger clamping area (the area of ​​the clamping area formed by the first clamping arm 112 and the second clamping arm 113), and obtain a better clamping effect. Among them, the fixed end of the first clamping arm 112 and the fixed end of the second clamping arm 113 are the ends of the two that are connected to the cylindrical body 110. The upper tube 10 and the lower tube 20 are coaxially distributed, and the two can be connected by a coating 120 and / or an elastic curve segment. The elastic curve segment of the lower tube 20 extends in a circular form in the circumferential direction at the starting position, and then extends upward in a spiral form. The elastic curve segment of the upper tube 10 extends upward in a spiral form in the circumferential direction at the starting position, and the last circle extends in a circular form. In the above embodiment, the axial distance between the upper and lower clamping arms is 3mm. The optional range of the axial distance is greater than 0 mm and less than or equal to 5 mm. In the above embodiment, the elastic metal wire constituting the clamping arm and the elastic curved section of the cylinder to which the base of the clamping arm is attached are the same elastic metal wire or metal strip. In some optional embodiments, the clamping arm can be a separate U-shaped or V-shaped part, which is welded to the elastic curved section of the cylinder by welding. The elastic curved section of the upper cylinder 10 and the elastic curved section of the lower cylinder 20 are continuous curved sections.

[0073] The clamping arm design in this embodiment is different from the waist-shaped or flange-shaped anchoring design in the prior art. It can effectively reduce the volume of the shunt device in the cavity and the contact area with the anchoring point to avoid adverse effects on blood flow, and can firmly anchor the main body in the target area.

[0074] The coating 120 is applied to the inner surface of the tubular body 110. In the present embodiment, the length of the coating 120 is equal to the sum of the lengths of the upper tube and the lower end tube. Since the coating 120 is a tubular structure with a certain strength, it can also strengthen the strength of the tubular body 110 and the connection strength between the upper tube and the lower end tube when it is applied to the inner / outer surface of the tubular body 110, and can maintain the preset shape of the elastic curve segment, thereby maintaining the shape of the tubular body 110. The coating 120 is usually made of a polymer material, which can make the inner cavity of the cylinder smooth, prevent the hyperplasia of the atrial septum tissue from blocking the cylinder cavity, and maintain the smooth flow of the cylinder cavity. The material of the coating 120 can be a polymer material or a biomaterial, not limited to polyester, polytetrafluoroethylene, animal pericardium, etc. The surface of the coating 120 can be provided with a coating to improve the surface finish, so as to improve the long-term patency rate. In some optional embodiments, the coating 120 can also be provided on the outer surface of the tubular body 110. In other optional embodiments, a layer of coating 120 may be provided on both the inner surface and the outer surface of the cylindrical body 110. Another beneficial effect of the coating 120 is to produce an insulating effect, which can isolate the cylindrical body 110 and the wireless sensor 200 to a certain extent to avoid signal interference. The coating 120 and the cylindrical body 110 can be connected by heat pressing or sewing. In order to more clearly distinguish the coating 120 from the cylindrical body 110, the thickness of the coating 120 is deliberately enlarged and the coating 120 is drawn on the inner surface of the cylindrical body 110, and the actual thickness is smaller than the size shown.

[0075] Those skilled in the art can understand that, although in the present embodiment, the bracket 100 is connected to the wireless sensor 200 via the connector 300 , in other embodiments, the bracket 100 can also be used as an independent diverter.

[0076] In this embodiment, the joint segment includes a first joint segment and a second joint segment, which are respectively formed integrally with a portion of the two elastic curve segments. In other words, the first joint segment is formed by a natural extension of a portion of the elastic curve segment, and the second joint segment is formed by a natural extension of a portion of the other elastic curve segment. Figure 6 , the enlarged schematic diagram of the junction of the upper tube 10 and the lower tube 20 after the sensor is omitted. In the middle of the cylindrical body 110, the initial section (upper part) of the elastic curve section of the lower tube 20 forms a first joint section 114, and the terminal section (lower part) of the elastic curve section of the upper tube 10 forms a second joint section 115.

[0077] Please refer to Figure 2, the wireless sensor 200 includes a detection element 210 and a wireless signal transmission element 220. The detection element 210 can be a pressure detection element, which can measure, for example, the pressure of blood flow. The detection element 210 is arranged at one end of the wireless sensor 200 to monitor the pressure of the left atrium. The wireless signal transmission element 220 is used to transmit the signal collected by the detection element 210 to the outside of the human body in the form of electromagnetic waves. The detection element 210 and the wireless signal transmission element 220 are packaged as a whole by a sealing structure. In other embodiments, two detection elements 210 can also be arranged at the two ends of the wireless sensor 200 to detect the pressure of the left atrium and the right atrium, and the wireless signal transmission element 220 is arranged between the two detection elements 210. Preferably, the wireless sensor 200 also includes a shell, and the detection element 210 is located at one end of the shell, and protrudes a predetermined distance relative to the cylindrical body 110 in the length direction of the shell, that is, at the end where the detection element 210 is located, the sensing surface of the wireless sensor 200 protrudes relative to the cylindrical body 110 to prevent the sensing surface of the detection element 210 from intimal hyperplasia.

[0078] In this embodiment, the connecting member 300 is an annular sleeve, and a partial section of the annular sleeve slightly protrudes outward to form a second connecting portion 320, and the other parts except the second connecting portion 320 are the first connecting portion 310. The outward protrusion of the second connecting portion 320 can be formed by the pulling of the bracket 100 and the wireless sensor 200 after the connecting member 300 connects the bracket 100 and the wireless sensor 200, or it can be a permanent protrusion set during manufacturing. The first connecting portion 310 is arranged around the middle of the wireless sensor 200. The second connecting portion 320 is a thin sheet structure as a whole, including a sheet portion 321. The sheet portion 321 is roughly rectangular. The sheet portion 321 has two parallel edges, namely an upper edge and a lower edge perpendicular to the axis of the annular sleeve. The upper edge and at least a portion of the area adjacent to it form an edge portion 322, and the lower edge and at least a portion of the area adjacent to it form another edge portion 322. The two edge portions 322 are used to be clamped by the first engaging section 114 and the second engaging section 115 , that is, the two edge portions 322 form a clamped portion 323 .

[0079] In this embodiment, the width (dimension in the axial direction) of the annular sleeve is small, while the length of the first engaging section 114 and the second engaging section 115 is large, so the first engaging section 114 and the second engaging section 115 each clamp two edge portions 322, that is, the first engaging section 114 and the second engaging section 115 clamp the entire axial direction area of ​​the sheet portion 321. In some optional embodiments, the axial dimension of the sheet portion 321 is large, and / or the length of the first engaging section 114 and / or the second engaging section 115 is small, the first engaging section 114 can only clamp the edge portion 322 corresponding to the lower edge, and the second engaging section 115 only clamps the edge portion 322 corresponding to the upper edge. Relative to the overall size of the connector, the height of the protrusion of the second connecting portion 320 is very small. In some optional embodiments, the first connecting portion can also be a complete cylindrical structure, and the second connecting portion 320 can be regarded as a structure arranged to fit the outer contour of the first connecting portion 310, so that the radial size of the part where the second connecting portion 320 and the first connecting portion 310 fit will not increase significantly. The bonding referred to here may be that the two adjacent surfaces are in contact with each other (but can be separated by external force, such as being separated by the insertion of the joining section), or that the two adjacent surfaces have a very small distance so that the first joining section can be inserted.

[0080] Through the above connection method, the second connection part 320 of the connector 300 is clamped between the first joint section 114, the second joint section 115 and the coating 120, which is equivalent to pressing the second connection part 320 on the surface of the cylindrical body 110; the bracket 100 and the wireless sensor 200 are connected together in parallel and circumferential. In addition, the first joint section 114 and the second joint section 115 are also clamped between the wireless sensor 200 and the second connection part 320. Such a connection is simple and reliable, which is convenient for the assembly and connection of small components such as shunts. In addition, the free ends of the first joint section 114 and the second joint section 115 point in opposite directions, which can also prevent the second connection part 320 from falling off in the axial direction. The connection method in which the joint section on the surface of the bracket 100 clamps the sheet structure on the surface of the wireless sensor 200 has a very small radial size, so it can allow the wireless sensor 200 to be tightly connected to the bracket 100 without causing the radial size of the implant to be too large.

[0081] The shape of the connector 300 is not limited to the structure described in the above embodiment, as long as the first connector 310 can be fixedly connected to the wireless sensor 200 and the second connector 320 connects the first connector to the joint section of the cylindrical body 110. Therefore, the first connector 310 can also be a ring-shaped structure with an opening, which can clamp the wireless sensor 200; or a closed or open box-shaped structure adapted to the shape of the wireless sensor 200, which can accommodate the wireless sensor 200; or a structure adapted to the connected part of the wireless sensor 200, such as a structure with a buckle, a thread or an adhesive surface (of course, the wireless sensor itself needs to be provided with a corresponding matching structure such as a slot, a thread or an adhesive surface); and the second connector 320 can be an arched structure or a cantilever structure that can be clamped by the joint section.

[0082] Preferably, the connector 300 is a sleeve, a part of which is the first connecting portion, and the other part is the second connecting portion. When the connector 300 and the wireless signal transmission element 220 overlap at least partially in the axial direction, the connector 300 is a non-metallic sleeve, and the cross section of the non-metallic sleeve is a closed structure (for example, an O-shaped structure) or an unclosed structure (for example, a C-shaped structure), so that the connector 300 itself can be prevented from affecting the signal transmission; or the annular sleeve is a metal sleeve, and the cross section of the metal sleeve is an unclosed structure, which can also avoid the connector 300 itself from affecting the signal transmission; when the connector 300 and the wireless signal transmission element 220 do not overlap at all in the axial direction, there is no restriction on the material of the connector 300.

[0083] refer to Fig.12, which shows the implant when installed in the target part. The target part m1 is a hole connecting the left atrium and the right atrium. The implant is inserted into the hole as a whole, and is clamped on the atrial septum tissue by the first clamping arm 112 and the second clamping arm 113 to prevent the implant from axially falling out of the target part m1. The detection element 210 is located in the left atrium and can detect the blood pressure of the left atrium. When the left atrium contracts, the blood flow therein not only enters the left ventricle, but also enters the right atrium through the lumen of the stent 100. The wireless sensor 200 is arranged side by side on the outside of the stent 100, so the wireless sensor 200 will not hinder the blood flow in the lumen or at both ends of the stent 100; and the stent 100 does not surround the wireless sensor 200, and the physical structure enclosing the opening 130 has no circumferential closed loop structure in at least one axial region, so it will not hinder the transmission of wireless signals, and the wireless sensor 200 can be installed in the atrial septum hole side by side with the stent 100, and will not occupy too much atrial space like the traditional axial series mode. The connector 300 is tightly connected to the joint section of the stent 100, so that the stent 100 and the wireless sensor 200 are tightly against each other, which can not only enhance the connection strength between the two, but also reduce the radial size of the two, which is beneficial to the operation of transvascular interventional implantation.

[0084] refer to Figure 7 and Figure 8 . Figure 7 FIG. 4 is a schematic diagram of a compressed state of the implant according to the aforementioned embodiment when it is located in a delivery tube. Figure 8 for Figure 7 Schematic diagram of the axial profile projection of the delivery tube and the implant. The stent 100 of the implant is formed by elastic curve segments, so that the whole can be deformed under external force compression and restore its original shape after the external force is removed. The implant and the delivery tube used for interventional surgery form an implant system.

[0085] In the implant, the elastic curve segment forms the main body of the stent 100, so that the stent 100 is elastic as a whole. When the wireless sensor 200 applies pressure to the stent 100 along the center line of the wireless sensor 200 and the stent 100, the stent 100 can be compressed, that is, the stent 100 is resiliently deformed along the first radial direction in the restricted space (the radial dimension in the force direction is reduced, and the radial dimension perpendicular to the force direction is enlarged, and the "first radial direction" here refers to the radial direction consistent with the force direction), and the wireless sensor 200 can be partially embedded in the recessed area of ​​the stent 100. After the external force disappears, the stent 100 will return to its original shape and restore its positional relationship with the wireless sensor 200. During the process of placing the implant into the delivery tube 400, the wall of the delivery tube 400 exerts pressure on the stent 100 and the wireless sensor 200 in the direction of the center line connecting the wireless sensor 200 and the stent 100 and in the first radial direction perpendicular to the direction, so that the stent 100 is compressed along the second radial direction into a state where the axial contour projection surface is C-shaped, and the wireless sensor 200 is partially embedded in the recessed part of the stent 100, where the "axial contour projection surface" refers to the contour image obtained by projecting from the axial direction of the object. In addition, the first clamping arm 112 and the second clamping arm 113 are pressed down along the longitudinal section to approach the surface of the stent 100, that is, the free ends of the first clamping arm 112 and the second clamping arm 113 are respectively approached to the extension direction of the two ends of the stent 100. After being placed in the delivery tube 400, the overall radial dimension of the implant is compressed; because the form of its compression deformation is that the cylinder is flattened and the circumference of the cylinder remains unchanged. Instead of achieving radial dimension reduction by axial elongation, the axial dimension of the implant does not change significantly. An implant with a shorter length is more conducive to the bending of the delivery tube 400, which is beneficial to the convenience of the implantation process.

[0086] For reference Figures 9 to 12 , which shows the surgical procedure of implanting a shunt at a target site via an interventional catheter. Fig. 9 4 is a schematic diagram showing when the delivery tube 400 containing the implant reaches the target site m1. Fig.10 It is a schematic diagram of an implant extending one end from a delivery tube 400 and a first clamping arm 112 . Fig.11 It is a schematic diagram when the delivery tube 400 is withdrawn to allow the first clamping arm 112 of the implant to reach the surface of the atrial septum m2. Fig.12 It is a schematic diagram when the delivery tube 400 is removed and the implant is installed in the target site m1.

[0087] One end of the delivery tube 400 containing the implant enters the right atrium through the thicker blood vessels of the human body, and enters the left atrium through the hole of the atrial septum m2. At this position, one end of the implant is extended from the end of the delivery tube 400 by withdrawing the delivery tube or pushing the implant outward, and the first clamping arm 112 is unfolded into a cantilever state. After the first clamping arm 112 is unfolded, the overall radial size of the implant is greater than the diameter of the hole on the atrial septum m2. The delivery tube is withdrawn again, and the implant moves with the catheter until the first clamping arm 112 contacts the atrial septum m2. The delivery tube 400 is further withdrawn, and due to the obstruction of the atrial septum m2, the implant will remain in this position and will not be withdrawn with the delivery tube 400. After the implant is completely separated from the delivery tube 400, the second clamping arm 113 will also be unfolded, and the second clamping arm 113 and the first clamping arm 112 will keep the stent 100 and the wireless sensor 200 in the hole of the atrial septum m2. The stent 100 returns to its original shape in the radial direction, and its lumen allows blood flow from the left atrium to enter the right atrium. After the stent 100 is in place, the detection element 210 of the wireless sensor 200 can monitor the blood pressure of the left atrium in real time and transmit the relevant information to an external receiving device through the wireless signal transmission element 220.

[0088] refer to Fig.13 and Fig.14 . Fig.13 is a schematic structural diagram of an implant according to another embodiment of the present disclosure. Fig.14 yes Fig.13 Schematic diagram of the axial profile projection surface structure of the implant in the delivery tube. In this embodiment, the cylindrical body 110a of the implant has the same structure as the cylindrical body 110 in the previous embodiment, and the wireless sensor 200a is located inside the cylindrical body 110a and inscribed with the cylindrical body 110a. When the implant is compressed in the delivery tube 400, a part of the cylindrical body 110a completely covers the wireless sensor 200a, and the remaining part is folded around the outside of the wireless sensor 200a.

[0089] It is understandable that although Figures 2 to 6 The wireless sensor 200 is set outside the cylindrical body 110 as an example, but when the wireless sensor 200 is set inside the cylindrical body 110, it can also be used. Figures 2 to 6 The connecting piece and the joint section fix the wireless sensor 200 and the cylindrical body 110. The coating 120 can be arranged on the outside of the cylindrical body 110 or on the inside and outside of the cylindrical body 110 at the same time. When a part of the coating 120 is arranged on the inside of the cylindrical body 110, the joint section can pass through the coating 120 and connect with the connecting piece.

[0090] refer to Fig.15 and Fig.16 . Fig.15 is a schematic structural diagram of an implant according to another embodiment of the present disclosure. Fig.16 yes Fig.15 Schematic diagram of the axial profile projection surface structure of the implant in the delivery tube. In the present embodiment, the cylindrical body 110b of the implant has the same structure as the cylindrical body 110 in the aforementioned embodiment, and the wireless sensor 200b is located inside the cylindrical body 110b and is coaxially arranged with the cylindrical body 110b. The wireless sensor 200b is connected to the cylindrical body 110b by a plurality of limiting wires 300b. The limiting wire 300b can be made of metal or polymer. The limiting wire 300b can be combined with the cylindrical body 110b in the form of knotting, bonding or spot welding. The limiting wire 300b can also be combined with the pressure monitoring device 200b in the above manner, but the combination method is not limited to the above examples. When the implant is compressed in the delivery tube 400, the cylindrical body 110b is squeezed between the delivery tube 400 and the wireless sensor 200b to form a structure with a wavy annular axial profile projection surface.

[0091] refer to Figures 17 to 21 . Fig.17 is a schematic structural diagram of an implant according to another embodiment of the present disclosure. Fig.18 yes Fig.17 Schematic diagram of the structure of the stent after the wireless sensor is omitted in the implant. Fig.19 yes Fig.17 Schematic diagram of the axial profile projection surface structure of the middle bracket in the first state. Fig. 20 yes Fig.17 Schematic diagram of the axial profile projection structure of the implant in the second state. Fig.21 yes Fig.17 Schematic diagram of the axial profile projection structure of the implant when it is located in the delivery tube.

[0092] In this embodiment, the support of the implant includes a cylindrical body 110c, a first clamping arm 112c and a second clamping arm 113c. The cylindrical body 110c is an open-loop cylindrical structure with a C-shaped axial profile projection surface formed by winding a mesh formed by weaving metal wire. The unfolded form of the mesh is rectangular, and its two opposite edge portions are a first end 133c and a second end 134c. The first end 133c and the second end 134c of the mesh are not joined, and an opening 130c is formed between the two. The two ends of the opening 130c are a first open end 131c and a second open end 132c, that is, the opening 130c can be regarded as a straight-line gap that runs through the circumferential surface of the cylindrical body 110c in a direction parallel to the axial direction.

[0093] When the cylindrical body 110c is compressed, the first end 133c can be wound into the inside of the cylindrical body from the inside of the second end 134c, so that the cylindrical body 110c has a smaller compressed volume. The diameter of the cylindrical body 110c in the working state can be adjusted according to the size of the target part m1. For example, taking the target part as the atrial septum foramen as an example: when the aperture is small, the diameter of the cylindrical body 110c can also be expanded or self-expanded to the aperture size, such as Fig.19 As shown, at this time, the first end 133c and the second end 134c are staggered in the radial direction, and the second end 134c overlaps with other parts of the cylindrical body 110c. In this case, the coating 120 is arranged on the inner and outer sides of the cylindrical body 110c so that the second end 134c and other parts of the cylindrical body 110c are insulated from each other; when the aperture is large, the diameter of the cylindrical body 110c can also be expanded or self-expanded to the aperture size, such as Fig. 20 As shown, the first end and the second end are staggered in the circumferential direction and have a certain distance. When a ball-expandable structure is used to implement this embodiment, the cylindrical body 110c and the tissue of the target site m1 can be expanded to the desired diameter simultaneously by balloon post-expansion. When a self-expandable structure is used to implement this embodiment, the tissue of the target site can be pre-expanded with a balloon, and then the cylindrical body 110c can be placed and expanded to the expected size.

[0094] like Fig.21 As shown, during compression, the mesh can be rolled and compressed in a reel form, that is, the first end 133c of the mesh enters the cylinder from the inside of the second end 134c and is rolled several times around the center. At this time, the wireless sensor 200c is located outside the rolled cylindrical body 110c and the two are located side by side in the delivery tube 400.

[0095] refer to Fig. 22 , Fig. 22 1 is a schematic diagram of the axial profile projection surface structure of the implant in the delivery tube in an optional embodiment. In this embodiment, the wireless sensor 200d is located inside the cylindrical body 110d in the stent, and the two are in an inscribed relationship. Fig.17 The cylindrical body 110d shown has the same structure. When compressing the implant, the mesh can be rolled and compressed in a reel form, that is, the first end 133d of the mesh enters the cylinder from the inside of the second end 134d and is wound around the center for several turns. And the wireless sensor 200d is wound in the cylinder, so that the wound cylinder and the wireless sensor 200d are basically coaxially arranged.

[0096] refer to Fig.23 , Fig.231 is a schematic diagram of the structure of the cylindrical body of the implant according to another embodiment of the present disclosure. In this embodiment, the cylindrical body 110e is a cylindrical body formed by winding a mesh formed by weaving metal wires. The cylindrical body is an open-loop cylindrical structure with a C-shaped axial profile projection surface. The first end 133e and the second end 134e of the mesh are not joined, and there is an opening 130e between the two. The edges of the first end 133e and the second end 134e are curved, so the opening 130e is a wave-shaped gap that runs through the circumferential surface of the cylindrical body 110e in the axial direction.

[0097] It can be understood that in other embodiments, the opening 130c may not be parallel to the axial direction of the cylindrical body 110c. For example, the unfolded shape of the mesh is a parallelogram rather than a rectangle. In other embodiments, the cylindrical body 110c can be directly woven out of metal wire through a weaving process or the cylindrical body 110c can be directly cut out of a metal tube through a cutting process, and an opening can be reserved. The opening extends along the cylindrical wall of the cylindrical body 110c but does not penetrate the cylindrical body 110c. As long as the sensor is arranged in the area where the opening is located, the signal interference of the cylindrical body 110c to the sensor can also be reduced.

[0098] In the above-mentioned embodiment, the cylindrical body has a cylindrical structure. In other embodiments, the cylindrical body may also have other structures. Figures 24a to 24e , the cylindrical body in this embodiment shows some optional implementations of the cylindrical body of the bracket.

[0099] Fig.24a This is a schematic diagram of the longitudinal profile projection surface shape of the bracket in an optional embodiment. In this embodiment, the diameter of the middle part of the bracket is smaller than the diameter of the two ends, forming an X-shaped projection surface shape. Figure 24b Schematic diagram of the longitudinal profile projection surface shape of the bracket in another optional embodiment. In this embodiment, the upper section of the bracket is trumpet-shaped, and the lower section is straight-cylindrical, forming a Y-shaped projection surface shape. Fig.24c It is a schematic diagram of the longitudinal profile projection surface shape of the bracket in another optional embodiment. In this embodiment, the diameter of one end of the bracket is larger than the diameter of the other end, and the diameter of the cylinder changes linearly in the axial direction, forming a V-shaped projection surface shape. Fig.24d It is a schematic diagram of the longitudinal profile projection surface shape of the bracket in another optional implementation. In this implementation, the diameter at both ends of the bracket is different from the diameter in the middle, and the centers of the two ends are not coaxial with the center of the middle, and the bracket has a K-shaped projection surface shape. Fig.24e It is a schematic diagram of the longitudinal profile projection surface shape of the bracket in another optional implementation manner. In this implementation manner, the bracket is in a Z shape as a whole. The "longitudinal profile projection surface" refers to the profile image obtained by projecting from the longitudinal direction of the object.

[0100] It can be understood that in the above-mentioned embodiments, the stent can also be separated from the sensor as an independent implant. Since there is an opening in it, at least in a part of the area, there is no closed-loop metal ring structure. Therefore, whether the sensor or other electronic device is implanted before the stent, after the stent, or simultaneously with the stent near the area, the interference of the stent with the wireless signal can be avoided or reduced. In the preferred embodiment, the openings are distributed over the entire length of the tubular body, so as to further improve the flexibility of the relative position of the sensor or other electronic device and the stent and reduce the effect of signal interference, and when the opening divides the tubular body into an open-loop structure with a C-shaped axial profile projection surface, the diameter of the tubular body can also be adaptively adjusted according to the aperture of the target site, thereby solving the problem in the prior art that the size of the shunt does not match the target site, resulting in complicated surgical operations or poor surgical results.

[0101] The present disclosure also provides an implant system. The implant system includes a delivery catheter and an implant. The delivery catheter is used to accommodate the compressed implant and deliver the implant to the target site through an artificial or natural chamber / pipeline. The implant may include a stent and a wireless sensor. The stent may be a shunt for atrial shunt surgery as in the aforementioned embodiment, or may be an occluder or a vascular stent. The implant is in a compressed state in the delivery catheter. For the specific compression state, please refer to the illustration and description of the implant in the delivery tube in the aforementioned embodiment. When the delivery catheter delivers the implant to the target site, the implant can be pushed out of the catheter through the inner catheter.

[0102] In some optional embodiments, the implant system further includes a signal receiving device, which is used to receive signals from wireless sensors in the implant so that medical personnel can track changes in physiological parameters of the organism in real time.

[0103] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. An implant for implantation into a target site in a living body, characterized in that: include: The stent is used to be arranged at the target site to improve the physiological function of the organism. The stent includes a cylindrical body made of metal material. The circumference of the cylindrical body is provided with an opening. The opening extends and is distributed over at least a part of the length of the cylindrical body and has at least a first open end.

2. The implant according to claim 1, characterized in that The openings are distributed throughout the entire length of the cylindrical body and also have a second open end.

3. The implant according to claim 1, characterized in that The opening extends on the circumferential surface of the cylindrical body in a spiral, straight or wavy form.

4. The implant according to claim 3, characterized in that When the opening extends in a spiral form on the circumference of the cylindrical body, it extends at least twice around the circumference of the cylindrical body.

5. The implant according to claim 4, characterized in that The cylindrical body is formed by spirally winding an elastic curved segment, and the gap between two adjacent turns of the elastic curved segment forms the opening; the elastic curved segment is a metal wire or a metal strip cut from a metal piece.

6. The implant according to claim 5, characterized in that The elastic curve section extends from the starting position in a circular form in the circumferential direction for one circle, then extends upward in a spiral form for one or more circles, and then extends in a circular form for one circle, thereby forming the cylindrical body; the elastic curve section is a wavy metal section.

7. The implant according to claim 3, characterized in that The opening divides the cylindrical body into an open-loop structure having a C-shaped axial profile projection surface, and the open-loop structure has a first end and a second end opposite to each other.

8. The implant according to claim 7, characterized in that In a working state, the first end portion and the second end portion are not in contact with each other, or are offset in a circumferential direction or a radial direction.

9. The implant according to claim 8, characterized in that The cylindrical body has a mesh structure, which is woven from metal wires or cut from metal pieces.

10. The implant according to claim 7, characterized in that When the open-loop structure is compressed, a stacked structure having a spiral axial profile projection surface is formed, and the first end portion is wound from the inner side of the second end portion toward the center.

11. The implant according to claim 1, characterized in that It also includes a wireless sensor, which includes a detection element and a wireless signal transmission element. The detection element is used to obtain target physiological parameters, and the wireless signal transmission element is used to transmit the target physiological parameters obtained by the detection element to the outside of the biological body.

12. The implant according to claim 11, characterized in that In a working state, the wireless sensor is located outside the cylindrical body, and when the cylindrical body is compressed, the wireless sensors are located side by side outside the cylindrical body; or, in a working state, the wireless sensor is located inside the cylindrical body, and when the cylindrical body is compressed, the wireless sensor is located inside the cylindrical body.

13. The implant according to claim 11, characterized in that The wireless sensor further comprises a shell, wherein the detection element is located at one end of the shell and protrudes a predetermined distance relative to the cylindrical body along the length direction of the shell.

14. The implant according to any one of claims 1 to 13, characterized in that The bracket also includes a clamping arm group, which includes at least a first clamping arm and a second clamping arm. The first clamping arm and the second clamping arm are distributed on the outer periphery of the cylindrical body at intervals along the axial direction of the cylindrical body, and the first clamping arm and the second clamping arm each form a cantilever protruding from the outer periphery of the cylindrical body.

15. The implant according to claim 14, characterized in that The first clamping arm and / or the second clamping arm are formed by bending an elastic metal wire or a metal strip, and / or the first clamping arm and / or the second clamping arm have a U-shaped or V-shaped structure formed by the elastic metal wire or the metal strip extending radially for a predetermined distance and then folding back.

16. The implant according to claim 14, characterized in that The first clamping arm and / or the second clamping arm are integrally formed with the cylindrical body.

17. The implant according to any one of claims 1 to 13, characterized in that The support further comprises a coating, which is applied on the inner side and / or the outer side of the cylindrical body and is made of an insulating material.

18. An implant system, comprising a delivery catheter and an implant, characterized in that: The implant is the implant according to any one of claims 1 to 17, and is in a compressed state when disposed in the catheter, and the implant can extend from the catheter.

19. The implant system according to claim 18, characterized in that The cylindrical body is compressed into a structure in which the axial profile projection surface is C-shaped, spiral-shaped or wavy-shaped closed loop; When the cylindrical body is compressed into a C-shaped structure with an axial profile projection surface, the outer surface of the compressed cylindrical body at least partially surrounds the wireless sensor; When the cylindrical body is compressed into a structure whose axial profile projection surface is a spiral line, the wireless sensors are located side by side outside the cylindrical body, or the wireless sensors are located inside the cylindrical body; When the cylindrical body is compressed into a structure whose axial profile projection surface is a wavy closed loop, the wireless sensor is located inside the cylindrical body.

20. The implant system according to claim 18 or 19, characterized in that It also includes a signal receiving device, which is used to transmit signals to the wireless sensor in the implant.

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