Implants and implant systems

Abstract

This invention relates to an implant and an implant system. The implant is used to be embedded in a target site in the body. The implant includes a stent (100). The stent (100) is placed in a target site and used to improve the physiological function of the body. The stent (100) includes a cylindrical body (110) made of a metal material, and an opening (130) is provided on the circumferential surface of the cylindrical body (110), and the opening (130) extends and is distributed within a length range of at least a portion of the cylindrical body (110). This implant contributes to the smooth transmission of wireless signals.

Description

[Technical Field]

[0001] The present invention 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 functions. The main symptoms of heart failure include dyspnea, fatigue, and fluid retention (pulmonary congestion, systemic circulation congestion, and peripheral edema). Heart failure is divided into three types: 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 patients with chronic heart failure with reduced ejection fraction, persistent elevation of left atrial pressure is the main cause of pulmonary congestion, which causes 90% of heart failure patients to be hospitalized for treatment.

[0003] Atrial shunting is one of the means to improve high pressure in the left atrium. By creating a hole in the atrial septum to guide the blood flow of the left atrium to shunt to the right atrium, the load on the left atrium is reduced. Atrial shunting can be divided into implant-based shunting and non-implant-based shunting. Implant-based shunting requires fixing the implant in the artificially formed hole of the atrial septum to keep the hole from closing. At present, the creation of the atrial septal hole and fixation of the implant are generally performed by means of vascular intervention. The specific procedure is that the instrument or shunt is accommodated in a catheter, and the instrument or shunt is passed together with the catheter through the artery or vein of the human body and delivered to the lesion site of the heart for operation. Since the diameter of the blood vessel is limited, the diameter of the corresponding catheter is also limited. Therefore, the shunt needs to be maintained in a compressed state in the catheter first, and after being delivered to the target site, it needs to expand to a predetermined size automatically or passively after being released from the catheter.

[0004] Aside from the shunts used in heart failure patients as described above, there are other types of stent implants suitable for placement within the heart or blood vessels in patients with cardiovascular disease. For example, some patients may need occlusion devices in their hearts or blood vessels to complete cardiovascular function, and patients with vascular stenosis may need vascular stents implanted. However, in addition to treating related symptoms with implants, other elements that need to communicate wirelessly with the outside world may need to be implanted in the patient's body. For example, this could be a wireless monitoring device that monitors the hemodynamic parameters of the patient's cardiovascular system. For heart failure patients, monitoring atrial pressure is a very important health management measure in addition to surgical treatment. Therefore, a wireless pressure monitoring device may be placed in the atrial septum if certain conditions are met. However, since stents are usually a mesh structure made of woven metal wires or cut tubular material, this mesh structure interferes with and shields the transmission of wireless signals from wireless communication elements. On the other hand, if a pressure monitoring device is installed along the axial direction at the proximal or distal end of the stent, it increases the overall length of the structure, obstructs normal blood flow, affects the size of the stent ends, and creates a risk of stenosis in the long term. [Overview of the project] [Problems that the invention aims to solve]

[0005] In view of this, the present invention provides an implant and an implant system for solving at least some of the aforementioned problems. [Means for solving the problem]

[0006] In a first embodiment, an implant for implantation in a target site within a living organism is provided. The implant includes a stent. The stent is placed at a target site and used to improve the physiological function of the living organism, and the stent includes a tubular body made of a metal material, and the circumferential surface of the tubular body is provided with openings that extend and are distributed within a length range of at least a portion of the tubular body.

[0007] In one possible embodiment, the opening has at least a first open end.

[0008] In conjunction with the possible implementations described above, in one possible embodiment, the openings are distributed over the length of the cylindrical body and further have a second open end.

[0009] In conjunction with the possible implementations described above, in one possible embodiment, the opening extends in a spiral, linear, or wavy manner on the circumferential surface of the cylindrical body.

[0010] In conjunction with the possible implementations described above, in one possible embodiment, if the opening extends in a spiral manner on the circumferential surface of the cylindrical body, it extends at least twice on the circumferential surface of the cylindrical body.

[0011] In conjunction with the possible implementations described above, in one possible embodiment, the cylindrical body is made up of elastic curved segments wound in a spiral manner, with the gap between two adjacent turns of the elastic curved segments forming an opening.

[0012] In conjunction with the possible implementations described above, in one possible embodiment, the elastic curve segment is a metal wire or a metal strip obtained by cutting a metal member.

[0013] In conjunction with the possible implementations described above, in one possible embodiment, the elastic curve segment is formed by extending it in an annular manner around the circumference from the starting position, then extending it upward in a spiral manner one or more times, and then extending it in an annular manner one more time.

[0014] In conjunction with the possible implementations described above, in one possible embodiment, the elastic curved segment is a corrugated metal segment.

[0015] In conjunction with the possible implementations described above, in one possible embodiment, the opening divides the cylindrical body into an open annular structure having a C-shaped axial contour projection plane, the open annular structure having opposing first and second ends.

[0016] In connection with the possible implementations described above, in one possible embodiment, the first end and the second end are either not in contact or are offset in the circumferential or radial direction.

[0017] In connection with the above possible implementations, in one possible embodiment, the cylindrical body has a mesh structure, the mesh structure is made of woven metal wires or cut metal members.

[0018] In conjunction with the possible implementations described above, in one possible embodiment, when the open annular structure is compressed, it becomes a laminated structure having a helical axial contour projection plane, with the first end being wound inward from the inside of the second end towards the center.

[0019] In conjunction with the possible implementations described above, one possible embodiment further includes a wireless sensor, the wireless sensor including a sensing element used to acquire a target physiological parameter and a wireless signal transmission element used to transmit the target physiological parameter acquired by the sensing element to the outside of the living organism.

[0020] In conjunction with the above possible implementations, in one possible embodiment, in the operating state, the wireless sensor is located outside the cylindrical body, and when the cylindrical body is compressed, the wireless sensor is located in parallel outside the cylindrical body.

[0021] In conjunction with the above possible implementations, in one possible embodiment, in the operating 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.

[0022] In conjunction with the above-described possible implementations, in one possible embodiment, the wireless sensor further includes a case, the detection element being located at one end of the case and protruding a predetermined distance from the cylindrical body along the longitudinal direction of the case.

[0023] In connection with the above possible implementation, in one possible embodiment, the stent further comprises a group of clamping arms, the group of clamping arms 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 circumference of the cylindrical main body at intervals along the axial direction of the cylindrical main body, and each form a cantilever protruding from the outer circumference of the cylindrical main body.

[0024] In connection with the above possible implementation, in one possible embodiment, the first clamping arm and / or the second clamping arm is formed by bending an elastic metal wire or metal strip, and has a U-shaped or V-shaped structure formed by folding back the elastic metal wire or metal strip after it extends a predetermined distance along the radial direction.

[0025] In connection with the above possible implementation, in one possible embodiment, the first clamping arm and / or the second clamping arm is integrally formed with the cylindrical main body.

[0026] In connection with the above possible implementation, in one possible embodiment, the stent further comprises a coating layer laid on the inside and / or outside of the cylindrical main body and made of an insulating material.

[0027] In connection with the above possible implementation, in one possible embodiment, the implant further comprises a wireless sensor and a connecting member, the stent and the wireless sensor are arranged parallel to each other, the wireless sensor is connected to a joining segment of the stent via the connecting member, and the joining segment is integrally formed with the cylindrical main body.

[0028] In connection with the above possible implementation, in one possible embodiment, the joining segment includes a first joining segment and a second joining segment, the connecting member includes a first connecting portion and a second connecting portion, the first connecting portion is connected to the wireless sensor, and the second connecting portion includes a sheet material portion clamped by the first joining segment and the second joining segment.

[0029] In combination with the above possible implementation, in one possible embodiment, the first joining segment and the second joining segment have opposite orientation directions of their free ends.

[0030] In a second aspect, there is provided an implant system comprising a delivery catheter and an implant. The implant is the implant described in any one of the first aspect, and when disposed within the catheter, it is in a compressed state and is detachable from the catheter.

[0031] In one possible embodiment, the cylindrical body is compressed into a structure whose axial contour projection surface presents a C-shape, a spiral shape, or a wavy closed ring.

[0032] In one possible embodiment, when the cylindrical body is compressed into a structure whose axial contour projection surface presents a C-shape, the outer surface of the compressed cylindrical body at least partially surrounds the wireless sensor.

[0033] In one possible embodiment, when the cylindrical body is compressed into a structure whose axial contour projection surface presents a spiral shape, the wireless sensor is located in parallel outside the cylindrical body or inside the cylindrical body.

[0034] In one possible embodiment, when the cylindrical body is compressed into a structure whose axial contour projection surface presents a wavy closed ring, the wireless sensor is located inside the cylindrical body.

[0035] In combination with the above possible implementation, in one possible embodiment, the system further comprises a signal receiving device, which is used for transmitting signals with the wireless sensor on the implant. Effects of the Invention

[0036] In the implant according to the present invention, the implant stent includes a cylindrical body made of metal. The opening provided on the circumferential surface of the cylindrical body has at least a first open end, and the physical structure that surrounds and forms the opening with the first open end does not have any circumferentially closed annular structures within at least a portion of the axial region, thus reducing interference to wireless signals caused by the cylindrical body made of metal. [Brief explanation of the drawing]

[0037] To more clearly explain the technical concept of the embodiments of the present invention, the drawings necessary for use in the embodiments are briefly introduced below.

[0038] The following drawings illustrate only a few embodiments of the present invention and should not be considered limiting in scope.

[0039] Furthermore, it should be understood that the same or similar reference numerals are used in drawings to indicate the same or similar elements.

[0040] Furthermore, it should be understood that drawings are only schematic representations, and the sizes and proportions of elements in them are not necessarily precise.

[0041] [Figure 1] This is a schematic diagram of the structure of a target site m1 in a living organism according to one embodiment of the present invention. [Figure 2] This is a schematic diagram of the structure of an implant according to one embodiment of the present invention. [Figure 3] This is a schematic diagram of the implant structure after the capsule in Figure 2 has been omitted. [Figure 4] Figure 2 shows a schematic diagram of the elastic curved segment of the tubular body of the implant. [Figure 5] Figure 2 is a schematic diagram of the implant structure after the wireless sensor has been omitted. [Figure 6] This is an enlarged schematic diagram of the boundary area between the upper and lower sections of the cylindrical body after the wireless sensor has been omitted. [Figure 7]This is a schematic diagram of the compressed state when the implant according to the above embodiment is positioned within the delivery catheter. [Figure 8] Figure 7 is a schematic diagram of the axial contour projection of the delivery catheter and implant. [Figure 9] This is a schematic diagram showing the delivery catheter containing the implant reaching the target site. [Figure 10] This is a schematic diagram showing the implant with one end and the first clamping arm protruding from the delivery catheter. [Figure 11] This is a schematic diagram showing the moment when the first clamping arm of the implant reaches the surface of the atrial septum due to the withdrawal of the delivery catheter. [Figure 12] This is a schematic diagram illustrating the process of implant placement at the target site after the removal of the delivery catheter. [Figure 13] This is a schematic diagram of the structure of an implant according to another embodiment of the present invention. [Figure 14] Figure 13 is a schematic diagram of the axial contour projection of the implant located within the delivery catheter. [Figure 15] This is a schematic diagram of the structure of an implant according to another embodiment of the present invention. [Figure 16] Figure 15 is a schematic diagram of the axial contour projection of the implant located within the delivery catheter. [Figure 17] This is a schematic diagram of the structure of an implant according to another embodiment of the present invention. [Figure 18] This is a schematic diagram of the stent structure after the wireless sensor of the implant in Figure 17 has been omitted. [Figure 19] Figure 18 shows a schematic diagram of the axial contour projection of the stent in its first state. [Figure 20] Figure 18 shows a schematic diagram of the axial contour projection of the stent in its second state. [Figure 21] Figure 17 is a schematic diagram of the axial contour projection of the implant when it is positioned within the delivery catheter. [Figure 22]This is a schematic diagram of the axial contour projection of the implant when it is positioned within the delivery catheter in one of the selectable embodiments. [Figure 23] This is a schematic diagram of the structure of the cylindrical body of an implant according to another embodiment of the present invention. [Figure 24a] This is a schematic diagram of the longitudinal contour projection shape of the cylindrical body in a selectable embodiment. [Figure 24b] This is a schematic diagram of the longitudinal contour projection shape of the cylindrical body in another selectable embodiment. [Figure 24c] This is a schematic diagram of the longitudinal contour projection shape of the cylindrical body in another selectable embodiment. [Figure 24d] This is a schematic diagram of the longitudinal contour projection shape of the cylindrical body in another selectable embodiment. [Figure 24e] This is a schematic diagram of the longitudinal contour projection shape of the cylindrical body in another selectable embodiment. [Modes for carrying out the invention]

[0042] Hereinafter, embodiments of the present invention will be described illustratively with reference to the drawings. There may be multiple ways in which the present invention can be realized, and it should not be interpreted as being limited to the embodiments described herein. Rather, it should be understood that the embodiments described herein are merely for the purpose of providing a clearer and more complete understanding of the present invention.

[0043] It should be understood that the terms "including" and their variations used in this invention are open inclusions, meaning "including, but not limited to." The term "based on" means "based at least partially," and the term "plural" means "two or more."

[0044] The terms "first" or "second," etc., are used in this invention to describe various elements, but it should be understood that these elements are not limited by these terms, and these terms are merely used to distinguish one element from another.

[0045] The present invention provides an implant used to be implanted in a target site in a living organism for the purpose of improving the physiological function of the organism and obtaining target physiological parameters. The implant includes a stent, which may specifically be a mesh structure such as a shunt, occlusion device, or vascular stent. The stent is used to be placed at a target site. The stent includes a tubular body made of metal, with openings provided on the circumferential surface of the tubular body, the openings extending and distributed within a length range of at least a portion of the tubular body, and having at least a first open end. The openings provided on the circumferential surface of the tubular body have at least a first open end, and because the physical structure of the stent forming the opening does not have a metal closed annular structure at any position on the circumferential surface, interference to wireless signals by the tubular body made of metal can be reduced.

[0046] Figure 1 is a schematic diagram of the structure of a target site m1 in vivo according to one embodiment of the present invention. Specifically, the target site m1 is a hole located in the atrial septum m2 between the left and right atria. This hole may be an open foramen ovale or an artificially created hole. For some heart failure patients, this hole can reduce left atrial pressure and alleviate heart failure symptoms. The stent according to the embodiment of the present invention is a shunt, which is placed in this hole to maintain its shape and guide blood to flow from the left atrium to the right atrium.

[0047] In this embodiment, the implant may further include a wireless sensor comprising an electrically connected detection element and a wireless signal transmission element, wherein the detection element is used to acquire target physiological parameters, and the wireless signal transmission element is used to transmit the target physiological parameters acquired by the detection element to the outside of the living body. At least a portion of the wireless sensor may be provided inside or outside the cylindrical body, and in either case, it can transmit wireless signals.

[0048] Preferably, the wireless sensor is positioned midway along the outer surface of the shunt. Therefore, when the implant in this embodiment is placed in the atrial septum m2, the wireless sensor is placed within the target site m1 together with the stent and positioned at the target site. Furthermore, by providing two detection elements at both ends of the wireless sensor, pressure data from the left and right atria may be acquired simultaneously, or by providing only one detection element at one end, pressure data from the left atrium may be acquired.

[0049] Referring to Figures 2 to 5, Figures 2 to 5 are schematic diagrams of the structure of an implant according to one embodiment of the present invention. Specifically, Figure 2 is a schematic diagram of the structure of an implant according to one embodiment of the present invention. Figure 3 is a schematic diagram of the structure of the implant after the coating 120 of Figure 2 has been omitted. Figure 4 is a schematic diagram of the structure of the elastic curve segment 101 of the cylindrical body 110 of the implant in Figure 2. Figure 5 is a schematic diagram of the structure of the implant after the wireless sensor 200 of Figure 2 has been omitted.

[0050] The implant includes a stent 100, a wireless sensor 200, and a connecting member 300. The stent 100 and the wireless sensor 200 are arranged in parallel, and the connecting member 300 connects the two together. In this invention, "parallel" is not limited to being arranged in parallel, and the stent 100 and the wireless sensor may be in a positional relationship with a predetermined angle (but not perpendicular). Furthermore, in this invention, "parallel" is not limited to the outer surfaces of the two being aligned with each other, and the wireless sensor may be provided inside the stent 100, with the outer surface of the wireless sensor aligned with the inner surface of the stent 100. Preferably, the stent 100 and the wireless sensor 200 are arranged parallel to each other, the wireless sensor 200 is connected to the bonding segment of the stent via the connecting member, and preferably the bonding segment is integrally molded with the elastic curve segment. When the stent body has a cylindrical structure and the wireless sensor 200 also has a cylindrical structure, the wireless sensor 200 and the stent 100 are in an externally tangent configuration due to the action of the connecting member and the stent's joining segment. This design allows the implant to have a smaller radial dimension during transport and be more easily pressed and grasped within the transport device compared to other methods in which the sensor 200 is placed outside the stent 100, and it avoids interference with blood flow within the stent 100 by the sensor 200 compared to methods in which the sensor 200 is placed inside the stent 100.

[0051] 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 elastic curve segments 101 are wound spirally, and is substantially cylindrical in shape. The elastic curve segments 101 are metal wires. The elastic curve segments 101 are wound spirally multiple times to form a perforated cylindrical structure. In this embodiment, the elastic curve segments 101 are wound five times along a 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. Between two adjacent coils, an opening 130 is formed that connects the inside and outside of the cylindrical structure in the radial direction. In other words, the opening 130 is an irregular, band-shaped perforation that extends spirally across the circumferential surface of the cylindrical structure, and along its extension direction, both ends of this perforation are a first open end 131 and a second open end 132, respectively. Thus, the opening 130 is distributed over the length range of the cylindrical body 110, and since both ends of the opening 130 are not closed, there are no closed metal annular structures on the entire cylindrical body. On the other hand, in some optional embodiments, the opening 130 may be closed at one end, for example, by the end of a metal wire at the first open end 131 contacting the fifth coil 1015 to close it. Because the opening 130 does not create any metal annular structures that form a closed ring on the entire cylindrical body, the transmission of the signal of the wireless sensor 200 is not affected by the cylindrical body 110, regardless of whether the wireless sensor 200 is located inside or outside the cylindrical body 110. Compared to conventional technology, when the wireless sensor 200 is installed inside the cylindrical body 110, the signal transmission performance can be significantly improved, and when the wireless sensor 200 is installed outside the cylindrical body 110, interference to signal transmission by the cylindrical body 110 can be reduced.

[0052] The first clamping arm 112 and the second clamping arm 113 extend radially outward from the surface of the cylindrical 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 is distributed on both sides of the atrial septum m2 and used to clamp the atrial septum m2. Preferably, the cylindrical body 110, the first clamping arm 112, and the second clamping arm 113 are all made by winding and bending an elastic curved segment 101.

[0053] The cylindrical body 110 is divided into an upper cylinder 10 and a lower cylinder 20. There are three first clamping arms 112 and three second clamping arms 113. The three first clamping arms 112 are uniformly distributed on the surface of the upper cylinder 10. The three second clamping arms 113 are uniformly distributed on the surface of the lower cylinder 20. A portion of the elastic curve segment 101 stretches in a wave-like manner in the axial direction, and at the same time, as a whole, it is wound and stretched in a spiral manner in the circumferential direction to form a mesh cylinder. Another portion of the elastic curve segment 101 stretches outward radially from the surface of the mesh cylinder and then folds back onto the surface of the cylinder to form U-shaped clamping arms. Specifically, in the process of being wound and stretched in a spiral manner in the circumferential direction to form a mesh cylinder, the elastic curve segment 101 further stretches outward radially from the surface of the mesh cylinder and then folds back onto the surface of the cylinder to form substantially U-shaped clamping arms.

[0054] In other embodiments, the opening 130 may be located in only a portion of the cylindrical body, for example, only in the upper section 10 of the cylindrical body, and the wireless sensor 200 may be located inside or outside the upper section 10. The cylindrical body 110 may include a plurality of elastic curve segments 101 that are not directly connected to each other, and these elastic curve segments 101 are held in place by the coating 120 so as not to change their relative positions, thereby enabling indirect connection. The cylindrical body 110 may be made by cutting a metal member, and the elastic curve segments 101 and / or the clamping arm group may be metal strips made by cutting a metal member, and the metal member may be a metal tube or a metal piece. If the metal member is a metal piece, the cylindrical body 110 is made by winding the metal piece after cutting, and the elastic curve segments and the clamping arm group are integrally molded.

[0055] Furthermore, the three first clamping arms 112 and the three second clamping arms 113 form three clamping arm groups. The first clamping arms 112 and second clamping arms 113 of each clamping arm group are distributed with spacing in the axial direction. The first clamping arms 112 are at a first predetermined distance from the first end (upper end in Figure 2) of the cylindrical body 110. The second clamping arms 113 are at a second predetermined distance from the second end (lower end in Figure 2) of the cylindrical body 110. The free ends of the first clamping arms 112 and the free ends of the second clamping arms 113 overlap in the axial projection, while the fixed ends of the first clamping arms 112 and the fixed ends of the second clamping arms 113 are offset in the axial projection. This results in a larger clamping area (the area of ​​the clamping region jointly formed by the first clamping arms 112 and the second clamping arms 113) and a better clamping effect. Of these, the fixed ends of the first clamping arm 112 and the second clamping arm 113 are ends that are connected to the cylindrical body 110. The upper cylinder 10 and the lower cylinder 20 are distributed coaxially, and they can be connected by a coating 120 and / or elastic curved segments. The elastic curved segments of the lower cylinder 20 extend in an annular shape for one full turn in the circumferential direction at the starting position, and then extend upward in a spiral shape. The elastic curved segments of the upper cylinder 10 extend upward in a spiral shape in the circumferential direction at the starting position, and the last turn is extended in an annular shape. In the above embodiment, the axial distance between the two upper and lower clamping arms is 3 mm. The selectable range of the axial distance is greater than 0 mm and 5 mm or less. In the above embodiment, the elastic metal wire constituting the clamping arm is the same elastic metal wire or metal strip as the elastic curved segments of the cylindrical body to which the base of the clamping arm is attached. In some selectable embodiments, the clamping arm may be a single U-shaped or V-shaped part, welded to the elastic curved segment of the cylindrical body by welding. The elastic curved segment of the upper cylinder 10 and the elastic curved segment of the lower cylinder 20 are continuous curved segments.

[0056] The design of the clamping arm in this embodiment differs from the anchor designs of conventional waist-shaped or flange-shaped structures, effectively reducing the volume within the cavity of the flow diversion device and the contact area with the anchor point, thereby avoiding adverse effects on blood flow, while also allowing the main body to be firmly anchored within the target area.

[0057] The coating 120 is laid on the inner surface of the cylindrical body 110. In this embodiment, the length of the coating 120 is equal to the sum of the lengths of the upper and lower cylinders. Since the coating 120 has a cylindrical structure and possesses a certain strength, when laid on the inner / outer surface of the cylindrical body 110, it can strengthen the strength of the cylindrical body 110 and the connection strength between the upper and lower cylinders, while simultaneously maintaining the predetermined shape of the elastic curve segment and preserving the shape of the cylindrical body 110. The coating 120 is usually made of a polymer material, which smooths the lumen of the cylinder, prevents blockage of the lumen due to hyperplasia of the atrial septum tissue, and keeps the lumen open. The material of the coating 120 may be a polymer material or a biomaterial, and is not limited to polyester, polytetrafluoroethylene, animal pericardium, etc. A coating may be provided on the surface of the coating 120 to improve surface smoothness and increase the long-term patency rate. In some selectable embodiments, the coating 120 may be provided on the outer surface of the cylindrical body 110. In several other optional embodiments, a single layer of coating 120 may be provided on both the inner and outer surfaces of the cylindrical body 110. Another beneficial effect of the coating 120 is its insulating properties, which to some extent isolate the cylindrical body 110 from the wireless sensor 200 and prevent signal interference. The coating 120 and the cylindrical body 110 may be connected by thermosealing or stitching. In the drawings, the thickness dimension of the coating 120 is intentionally enlarged and the coating 120 is depicted as being on the inner surface of the cylindrical body 110 to more clearly distinguish it from the cylindrical body 110, although the actual thickness is smaller than the dimension shown.

[0058] Those skilled in the art will understand that in this embodiment, the stent 100 and the wireless sensor 200 are connected to each other via a connecting member 300, but in other embodiments, the stent 100 may be used as a single independent shunt.

[0059] In this embodiment, the joining segment includes a first joining segment and a second joining segment, each integrally molded with a portion of each of the two elastic curve segments. In other words, the first joining segment is formed by the natural stretching of a portion of an elastic curve segment, and the second joining segment is formed by the natural stretching of a portion of the other elastic curve segment. Refer to Figure 6, which is an enlarged schematic diagram of the boundary area between the upper cylinder 10 and the lower cylinder 20 after the sensor has been omitted. In the middle of the cylindrical body 110, the initial segment (upper) of the elastic curve segment of the lower cylinder 20 forms the first joining segment 114, and the end segment (lower) of the elastic curve segment of the upper cylinder 10 forms the second joining segment 115.

[0060] Referring to Figure 2, the wireless sensor 200 includes a detection element 210 and a wireless signal transmission element 220. The detection element 210 may be a pressure detection element, which can, for example, measure the pressure of blood flow. The detection element 210 is located at one end of the wireless sensor 200 and is used 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 together by a sealed structure. In other embodiments, two detection elements 210 may be located at two ends of the wireless sensor 200, thereby detecting the pressure of the left and right atria, and the wireless signal transmission element 220 is located between the two detection elements 210. Preferably, the wireless sensor 200 further includes a case, and the detection element 210 is located at one end of the case and protrudes a predetermined distance from the cylindrical body 110 along the length of the case, that is, at the end where the detection element 210 is located, the detection surface of the wireless sensor 200 protrudes from the cylindrical body 110, thereby preventing the occurrence of hyperplasia of the inner film on the detection surface of the detection element 210.

[0061] In this embodiment, the connecting member 300 is an annular fitting member, and a local segment of the annular fitting member protrudes slightly outward to form a second connecting portion 320, with the portion other than the second connecting portion 320 being the first connecting portion 310. The outward protrusion of the second connecting portion 320 may be formed by pulling the connecting member 300 after the stent 100 and the wireless sensor 200 are connected, or it may be a permanent protrusion provided during manufacturing. The first connecting portion 310 is provided so as to wrap around the middle of the wireless sensor 200. The second connecting portion 320 as a whole is a thin plate structure and includes one sheet material portion 321. The sheet material portion 321 is substantially rectangular. The sheet material portion 321 has two parallel edges, namely an upper edge and a lower edge perpendicular to the axis of the annular fitting member. The upper edge and at least a portion adjacent to it form one edge portion 322, and the lower edge and at least a portion adjacent to it form another edge portion 322. The two edge portions 322 are used to be clamped by the first joining segment 114 and the second joining segment 115, that is, the two edge portions 322 form the clamped portion.

[0062] In this embodiment, the width (axial dimension) of the annular fitting member is small, and the lengths of the first joining segment 114 and the second joining segment 115 are large. Therefore, each of the first joining segment 114 and the second joining segment 115 clamps two edge portions 322, that is, the first joining segment 114 and the second joining segment 115 clamp the entire axial region of the sheet material portion 321. In some optional embodiments, if the axial dimension of the sheet material portion 321 is large and / or the lengths of the first joining segment 114 and / or the second joining segment 115 are small, the first joining segment 114 may clamp only the edge portion 322 corresponding to the lower edge, and the second joining segment 115 may clamp only the edge portion 322 corresponding to the upper edge. The height to which the second connecting portion 320 protrudes is very small relative to the overall size of the connecting member. In some selectable embodiments, the first connector may be a single complete cylindrical structure, and the second connector 320 may be considered a structure that fits against the outer contour of the first connector 310, thereby not significantly increasing the radial dimensions of the area where the second connector 320 and the first connector 310 fit together. Here, "fitting together" may mean that two adjacent surfaces are in contact with each other (but can be separated by external force, for example by insertion of a joining segment), or that two adjacent surfaces are separated by a very small distance that allows for insertion of the first joining segment.

[0063] With the connection method described above, the second connection portion 320 of the connecting member 300 is sandwiched between the first joining segment 114, the second joining segment 115 and the coating 120, which corresponds to the second connection portion 320 being pressed against the surface of the cylindrical body 110. The stent 100 and the wireless sensor 200 are connected together in parallel and externally tangent. The first joining segment 114 and the second joining segment 115 are also sandwiched between the wireless sensor 200 and the second connection portion 320. Such a connection is simple and reliable and suitable for assembling and connecting minute components such as shunts. Furthermore, because the free ends of the first joining segment 114 and the second joining segment 115 have opposite orientations, it is possible to prevent the second connection portion 320 from falling off along the axial direction. In this connection method, where the bonding segments on the surface of the stent 100 clamp the sheet material structure on the surface of the wireless sensor 200, the radial dimensions of the connection structure are very small, so the overall radial dimensions of the implant do not become excessive, allowing for a tight connection between the wireless sensor 200 and the stent 100.

[0064] The shape of the connecting member 300 is not limited to the structure described in the above embodiment, and it is sufficient that the first connecting portion 310 can fix and connect to the wireless sensor 200, and the second connecting portion 320 can connect the first connecting portion to the joining segment of the cylindrical body 110. Therefore, the first connecting portion 310 may be an annular structure with an opening, which can fasten the wireless sensor 200. Alternatively, the first connecting portion 310 may be a closed or open box-shaped structure that conforms to the shape of the wireless sensor 200, which can house the wireless sensor 200. Alternatively, the first connecting portion 310 may have a structure that conforms to the part of the wireless sensor 200 to which it is connected, such as a locking button, screw, or adhesive surface (of course, the wireless sensor itself needs to be provided with a corresponding fitting structure such as an engagement groove, screw, or adhesive surface). The second connecting portion 320 may be an arch structure or a cantilever structure that can be clamped by the joining segment.

[0065] Preferably, the connecting member 300 is a pipe fitting, with a portion being a first connection and the other portion being a second connection. If the connecting member 300 overlaps the wireless signal transmission element 220 at least partially in the axial direction, the connecting member 300 is a non-metallic pipe fitting, and the cross-section of the non-metallic pipe fitting is a closed structure (e.g., an O-shaped structure) or an open structure (e.g., a C-shaped structure), thereby avoiding any influence of the connecting member 300 itself on signal transmission. Alternatively, the annular pipe fitting is a metal pipe fitting, and the cross-section of the metal pipe fitting is an open structure, similarly avoiding any influence of the connecting member 300 itself on signal transmission. If the connecting member 300 does not overlap the wireless signal transmission element 220 at all in the axial direction, there are no restrictions on the material of the connecting member 300.

[0066] Refer to Figure 12, which shows the implant when it is attached to the target site. The target site m1 is the opening that connects the left and right atria. The implant as a whole is inserted into the opening and is clamped to the tissue of the atrial septum by the first clamping arm 112 and the second clamping arm 113, thereby preventing the implant from dislodgeping from the target site m1 along the axial direction. The detection element 210 is located in the left atrium and can detect the blood pressure in the left atrium. When the left atrium contracts, some of the blood flow enters the left ventricle, while other parts pass through the lumen of the stent 100 into the right atrium. The wireless sensor 200 is mounted in parallel outside the stent 100 so as not to obstruct the blood flow in the lumen of the stent 100 or at both ends. On the other hand, the stent 100 does not surround the wireless sensor 200, and the physical structure that surrounds it and forms the opening 130 does not have any circumferentially closed annular structures within at least some axial regions, so it does not interfere with the transmission of wireless signals, and the wireless sensor 200 can be installed in parallel with the stent 100 in the opening of the atrial septum, without excessively occupying the space in the atrium as in the conventional axial series method. The connecting member 300 is tightly connected to the joining segment of the stent 100, causing the stent 100 and the wireless sensor 200 to come into close contact with each other, which not only strengthens the connection strength between the two but also reduces the radial dimensions of the two, which is advantageous for implantation operations by vascular intervention.

[0067] Referring to Figures 7 and 8, Figure 7 is a schematic diagram of the compressed state when the implant according to the above embodiment is located within the delivery catheter. Figure 8 is a schematic diagram of the axial contour projection plane of the delivery catheter and implant in Figure 7. Since the implant stent 100 is formed by elastic curve segments, the whole can deform under compression of external force and return to its original shape when the external force is removed. The implant and the delivery catheter used in interventional surgery form an implant system.

[0068] In the implant, the stent 100 is elastic as a whole because its body is formed by elastic curve segments. When pressure is applied to the stent 100 relative to the wireless sensor 200 along the direction of the line connecting the centers of the wireless sensor 200 and the stent 100, the stent 100 is compressible, that is, it deforms resiliently along the first radial direction within the confined space (the radial dimension in the direction of the applied force becomes smaller, and the radial dimension perpendicular to the direction of the applied force becomes larger, where "first radial direction" is the radial direction that coincides with the direction of the applied force), and the wireless sensor 200 becomes partially fittable into the recessed area of ​​the stent 100. When the external force disappears, the stent 100 returns to its original shape and restores its positional relationship with the wireless sensor 200. During the process of inserting the implant into the delivery catheter 400, the tubular wall of the delivery catheter 400 generates pressure on the stent 100 and the wireless sensor 200 in both the direction along the line connecting the centers of the wireless sensor 200 and the stent 100 and in the radial direction perpendicular thereto. As a result, the stent 100 is compressed radially so that its axial contour projection plane takes on a C-shape, and the wireless sensor 200 is partially fitted into the recess of the stent 100. The "axial contour projection plane" is the contour image obtained by projecting from the axial direction of the object. The first clamping arm 112 and the second clamping arm 113 are then pushed down along the longitudinal section, approaching the surface of the stent 100, that is, the free ends of the first clamping arm 112 and the second clamping arm 113 approach the extension direction of both ends of the stent 100. After being inserted into the delivery catheter 400, the overall radial dimensions of the implant are compressed, and since the form of this compression deformation is the crushing of the cylindrical body, the circumference of the cylindrical body does not change. Since the reduction in radial dimension is not achieved by axial elongation, the axial dimension of the implant does not change significantly. Shorter implant lengths are advantageous due to the curvature of the delivery catheter 400, which is beneficial for convenience during the implantation process.

[0069] Refer to Figures 9 through 12, which illustrate the surgical process of implanting a shunt at the target site using an interventional catheter. Figure 9 is a schematic diagram of the delivery catheter 400 containing the implant reaching the target site m1. Figure 10 is a schematic diagram of one end of the implant and the first clamping arm 112 extending from the delivery catheter 400. Figure 11 is a schematic diagram of the first clamping arm 112 of the implant reaching the surface of the atrial septum m2 due to the retraction of the delivery catheter 400. Figure 12 is a schematic diagram of the implant being attached to the target site m1 after the removal of the delivery catheter 400.

[0070] One end of the delivery catheter 400, which contains the implant, enters the right atrium via a relatively large blood vessel in the human body, and then enters the left atrium through a hole in the atrial septum m2. At this position, by pulling back the delivery catheter or pushing the implant outward, one end of the implant protrudes from the end of the delivery catheter 400, and the first clamping arm 112 is deployed in a cantilever position. After the first clamping arm 112 is deployed, the overall radial dimension of the implant is larger than the diameter of the hole in the atrial septum m2. When the delivery catheter is then pulled back, the implant moves with the delivery catheter until the first clamping arm 112 contacts the atrial septum m2. If the delivery catheter 400 is subsequently pulled back, the implant is not pulled back with the delivery catheter 400 due to the obstruction of the atrial septum m2 and is held in place. After the implant has completely detached from the delivery catheter 400, the second clamping arm 113 is also deployed, and the second clamping arm 113 and the first clamping arm 112 hold the stent 100 and the wireless sensor 200 in the hole in the atrial septum m2. The stent 100 also returns to its original shape radially, and its lumen is available for left atrium blood flow 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 in the left atrium in real time and transmit the relevant information to an external receiving device via the wireless signal transmission element 220.

[0071] Refer to Figures 13 and 14. Figure 13 is a schematic diagram of the structure of an implant according to another embodiment of the present invention. Figure 14 is a schematic diagram of the structure of the axial contour projection plane in which the implant in Figure 13 is located within the delivery catheter. In this embodiment, the tubular body 110a of the implant has the same structure as the tubular body 110 in the previous embodiment, and the wireless sensor 200a is located inside the tubular body 110a and is inscribed within the tubular body 110a. When the implant is compressed in the delivery catheter 400, a portion of the tubular body 110a completely covers the wireless sensor 200a, and the remaining portion folds and surrounds the outside of the wireless sensor 200a.

[0072] Figures 2 to 6 show an example where the wireless sensor 200 is provided on the outside of the cylindrical body 110. However, it can be understood that even when the wireless sensor 200 is provided inside the cylindrical body 110, the connecting member and joining segment shown in Figures 2 to 6 can be used to fix the wireless sensor 200 and the cylindrical body 110. The coating 120 may be provided on the outside of the cylindrical body 110, or it may be provided on both the inside and outside of the cylindrical body 110 at the same time. If a part of the coating 120 is provided on the inside of the cylindrical body 110, the joining segment can pass through the coating 120 and be connected to the connecting member.

[0073] Refer to Figures 15 and 16. Figure 15 is a schematic diagram of the structure of an implant according to another embodiment of the present invention. Figure 16 is a schematic diagram of the structure of an axial contour projection plane in which the implant in Figure 15 is located within the delivery catheter. In this embodiment, the tubular body 110b of the implant has the same structure as the tubular body 110 in the previous embodiment, and the wireless sensor 200b is located inside the tubular body 110b and is provided coaxially with the tubular body 110b. The wireless sensor 200b and the tubular body 110b are connected by a plurality of position regulating wires 300b. The position regulating wires 300b may be made of metal or polymer material. The position regulating wires 300b can be joined to the tubular body 110b by knotting, bonding, or spot welding. The position regulating wires 300b may be joined to the pressure monitoring device 200b in the manner described above, but the joining method is not limited to the above example. When the implant is compressed by the delivery catheter 400, the cylindrical body 110b is pressed between the delivery catheter 400 and the wireless sensor 200b, forming a structure having a wavy, annular axial contour projection surface.

[0074] Refer to Figures 17 to 21. Figure 17 is a schematic diagram of the structure of an implant according to another embodiment of the present invention. Figure 18 is a schematic diagram of the structure of a stent after the wireless sensor of the implant in Figure 17 has been omitted. Figure 19 is a schematic diagram of the structure of the axial contour projection plane of the stent in the first state in Figure 17. Figure 20 is a schematic diagram of the structure of the axial contour projection plane of the stent in the second state in Figure 17. Figure 21 is a schematic diagram of the structure of the axial contour projection plane of the implant in Figure 17 when it is positioned within the delivery catheter.

[0075] In this embodiment, the implant stent includes a cylindrical body 110c, a first clamping arm 112c, and a second clamping arm 113c. The cylindrical body 110c is an open ring cylindrical structure having a C-shaped axial contour projection surface, formed by winding a mesh sheet made of woven metal wires. The unfolded form of the mesh sheet is rectangular, with two opposing edge portions being the first end 133c and the second end 134c. The first end 133c and the second end 134c of the mesh sheet are not joined, and an opening 130c is formed between them. The ends of the opening 130c are the first open end 131c and the second open end 132c, that is, the opening 130c can be considered as a linear gap penetrating the circumferential surface of the cylindrical body 110c in a direction parallel to the axial direction.

[0076] When the cylindrical body 110c is compressed, the first end 133c can be wound inside 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 its operating state can be adjusted according to the size of the target site m1. For example, if the target site is the atrial septum, and the hole diameter is small, the diameter of the cylindrical body 110c can be expanded to the hole diameter or self-expanded. As shown in Figure 19, at this time, the first end 133c and the second end 134c are offset radially, and the second end 134c overlaps with other parts of the cylindrical body 110c. In such cases, the coating 120 is provided on the inside and outside of the cylindrical body 110c to insulate the second end 134c from other parts of the cylindrical body 110c. If the hole diameter is large, the diameter of the cylindrical body 110c can also be expanded to the hole diameter or it can self-expand. As shown in Figure 20, at this time, the first end and the second end are offset from each other in the circumferential direction and maintain a certain distance. When this embodiment is realized using a balloon expansion structure, the cylindrical body 110c and the tissue of the target site m1 can be simultaneously expanded to the required diameter by post-expansion of the balloon. When this embodiment is realized using a self-expansion structure, the tissue of the target site can be pre-expanded using a balloon, and then the cylindrical body 110c can be placed and expanded to the expected dimensions.

[0077] As shown in Figure 21, when compressed, the mesh sheet is wound in a reel-like manner and can be compressed. That is, the first end 133c of the mesh sheet enters the cylindrical body from the inside of the second end 134c and is wound around the center several times. At this time, the wireless sensor 200c is located on the outside of the wound cylindrical body 110c, and the two are located in parallel inside the delivery catheter 400.

[0078] Referring to Figure 22, which is a schematic diagram of the axial contour projection of the implant when it is positioned within the delivery catheter in a selectable embodiment. In this embodiment, the wireless sensor 200d is located inside the cylindrical body 110d within the stent, and the two are in an inscribed relationship. The cylindrical body 110d has the same structure as the cylindrical body 110d shown in Figure 17. When the implant is compressed, the mesh sheet is wound in a reel form and can be compressed. That is, the first end 133d of the mesh sheet enters the cylindrical body from the inside of the second end 134d and is wound around the center several times. The wireless sensor 200d is then wound into the cylindrical body, and the wound cylindrical body is positioned approximately coaxially with the wireless sensor 200d.

[0079] Referring to Figure 23, which is a schematic diagram of the structure of the cylindrical body of an implant according to another embodiment of the present invention. In this embodiment, the cylindrical body 110e is a cylindrical body made by winding a mesh sheet made of woven metal wires. The cylindrical body is an open ring cylindrical structure having a C-shaped axial contour projection surface. Furthermore, the first end 133e and the second end 134e of the mesh sheet are not joined, and there is an opening 130e between the two. Because the edges of the first end 133e and the second end 134e are curved, the opening 130e is a wavy gap that penetrates the circumferential surface of the cylindrical body 110e in the axial direction.

[0080] In other embodiments, the opening 130c does not have to be parallel to the axial direction of the cylindrical body 110c. For example, the unfolded shape of the mesh sheet may be a parallelogram rather than a rectangle. In other embodiments, the metal wire may be directly woven into the cylindrical body 110c by a weaving process, or the metal tube may be directly cut into the cylindrical body 110c by a cutting process, and the opening may be made in advance. The opening extends along the cylindrical wall of the cylindrical body 110c but does not penetrate the cylindrical body 110c. If the sensor is located in the area where the opening is situated, it is understood that interference of the sensor signal by the cylindrical body 110c can be reduced in a similar manner.

[0081] In the above embodiment, the cylindrical body has a cylindrical structure, but in other embodiments, the cylindrical body may have other structures. Referring to Figures 24a to 24e, several selectable embodiments of the cylindrical body of the stent are shown in this embodiment.

[0082] Figure 24a is a schematic diagram of the longitudinal contour projection shape of a stent in a selectable embodiment. In this embodiment, the diameter of the stent is smaller in the middle than the diameters of both ends, forming an X-shaped projection shape. Figure 24b is a schematic diagram of the longitudinal contour projection shape of a stent in another selectable embodiment. In this embodiment, the stent has a trumpet shape at the top and a straight cylindrical shape at the bottom, forming a Y-shaped projection shape. Figure 24c is a schematic diagram of the longitudinal contour projection shape of a stent in another selectable embodiment. In this embodiment, the diameter of one end of the stent is larger than the diameter of the other end, and the diameter of the cylindrical body changes linearly in the axial direction, forming a V-shaped projection shape. Figure 24d is a schematic diagram of the longitudinal contour projection shape of a stent in another selectable embodiment. In this embodiment, the diameters of both ends are different from the diameter of the middle, and the centers of both ends are not coaxial with the center of the middle, resulting in a K-shaped projection shape. Figure 24e is a schematic diagram of the longitudinal contour projection shape of a stent in another selectable embodiment. In this embodiment, the stent exhibits an overall Z-shape. The "longitudinal contour projection plane" is a contour image obtained by projecting from the longitudinal direction of the object.

[0083] In some of the embodiments described above, it can be understood that the stent may be separated from the sensor as a single independent implant. Because it has an opening and does not form a closed annular metal structure in at least some areas, interference to radio signals by the stent can be avoided or reduced, regardless of whether the sensor or other electronic device is implanted before, after, or together with the stent near that area. In a preferred solution, the opening is distributed over the length range of the tubular body, thereby further improving the flexibility of the relative position between the sensor or other electronic device and the stent and the effect of reducing signal interference. Furthermore, if the opening divides the tubular body into an open annular structure having a C-shaped axial contour projection plane, the diameter of the tubular body can be further adaptively adjusted according to the hole diameter of the target site, thereby solving the problem in the prior art of complicated surgical procedures or poor surgical outcomes due to the shunt size not matching the target site.

[0084] The present invention further provides an implant system. The implant system includes a delivery catheter and an implant. The delivery catheter is used to house the compressed implant and to deliver the implant to a target site via an artificial or natural cavity / channel. The implant may include a stent and a wireless sensor, the stent may be a shunt used in the atrial shunt procedure described in the above embodiments, or it may be an occlusion device or a vascular stent. The implant is compressed within the delivery catheter. For a specific example of the compressed state, refer to the illustrations and descriptions of the implant positioned within the delivery catheter in the above embodiments. Once the delivery catheter has delivered the implant to the target site, the inner catheter can push the implant out of the catheter.

[0085] In some optional embodiments, the implant system further includes a signal receiver. The signal receiver is used to receive signals from wireless sensors in the implant, allowing healthcare professionals to track changes in the physiological parameters of the organism in real time.

[0086] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that a person skilled in the art could easily conceive of within the scope disclosed herein should be included within the scope of protection of the present invention. Accordingly, the scope of protection of the present invention should be in accordance with the appended claims.

Claims

1. An implant intended to be embedded in a target site within the body, A stent provided at the target site and used to improve the physiological function of the living organism, wherein the stent includes a cylindrical body made of a metal material, and the circumferential surface of the cylindrical body is provided with openings that extend and are distributed within a length range of at least a portion of the cylindrical body. An implant characterized by the following features.

2. The opening has at least a first open end, The implant according to feature 1.

3. The opening is distributed over the length range of the cylindrical body and further has a second open end. The implant according to feature 2.

4. The opening extends in a spiral, linear, or wavy manner on the circumferential surface of the cylindrical body. The implant according to any one of claims 1 to 3.

5. When the opening extends in a spiral shape on the circumferential surface of the cylindrical body, it extends at least twice on the circumferential surface of the cylindrical body. The implant according to feature 4.

6. The cylindrical body is formed by winding elastic curved segments in a spiral shape, and the gap between two adjacent turns of the elastic curved segments forms the opening. The implant according to feature 5.

7. The elastic curved segment is either a metal wire or a metal strip obtained by cutting a metal member. The implant according to feature 6.

8. The cylindrical body is formed by extending the elastic curved segment in an annular shape around the circumference from the starting position, then extending it upward in a spiral shape for one or more turns, and then extending it in an annular shape for one turn. The implant according to feature 6 or 7.

9. The elastic curve segment is wavy. The implant according to feature 8.

10. The opening divides the cylindrical body into an open annular structure having a C-shaped axial contour projection surface, and the open annular structure has opposing first and second ends. The implant according to feature 4.

11. In the operating state, the first end and the second end are not in contact, or are misaligned in the circumferential or radial direction. The implant according to feature 10.

12. The cylindrical body has a mesh structure, and the mesh structure is made by weaving metal wires together or by cutting metal members. The implant according to feature 11.

13. When the open annular structure is compressed, it becomes a laminated structure having a helical axial contour projection surface, and the first end is wound from the inside of the second end toward the center. The implant according to any one of claims 10 to 12.

14. A wireless sensor further includes a detection element used to acquire target physiological parameters and a wireless signal transmission element used to transmit the target physiological parameters acquired by the detection element to the outside of the living body, The implant according to any one of claims 1 to 13.

15. In the operating state, the wireless sensor is located outside the cylindrical body, and when the cylindrical body is compressed, the wireless sensor is located in parallel outside the cylindrical body. The implant according to feature 14.

16. In the operating 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. The implant according to feature 14.

17. The wireless sensor further includes a case, and the detection element is located at one end of the case and protrudes a predetermined distance from the cylindrical body along the length of the case. The implant according to any one of claims 14 to 16.

18. The stent further includes a group of clamping arms, the group of clamping arms including at least a first clamping arm and a second clamping arm, the first clamping arm and the second clamping arm are distributed around the outer circumference of the cylindrical body at intervals along the axial direction of the cylindrical body, and each forms a cantilever beam protruding from the outer circumference of the cylindrical body. The implant according to any one of claims 1 to 17.

19. The first clamping arm and / or the second clamping arm are made of a bent elastic metal wire or metal strip. The implant according to feature 18.

20. The first clamping arm and / or the second clamping arm have a U-shaped or V-shaped structure formed by an elastic metal wire or metal strip being extended radially for a predetermined distance and then folded back. The implant according to feature 18 or 19.

21. The first clamping arm and / or the second clamping arm are integrally molded with the cylindrical body. The implant according to any one of claims 18 to 20.

22. The stent is laid on the inside and / or outside of the cylindrical body and further includes a coating made of an insulating material. The implant according to any one of claims 1 to 21.

23. The implant further includes a wireless sensor and a connecting member, the stent and the wireless sensor are arranged parallel to each other, the wireless sensor is connected to the bonding segment of the stent via the connecting member, and the bonding segment is integrally molded with the cylindrical body. The implant according to any one of claims 1 to 21.

24. The joining segment includes a first joining segment and a second joining segment, the connecting member includes a first connecting portion and a second connecting portion, the first connecting portion is connected to the wireless sensor, and the second connecting portion includes a sheet material portion sandwiched between the first joining segment and the second joining segment. The implant according to feature 23.

25. The first and second joint segments have opposite directional directions at their free ends. The implant according to feature 24.

26. An implant system including a delivery catheter and an implant, The implant is the implant described in any one of claims 1 to 25, which is compressed when placed in the catheter and is detachable from the catheter. An implant system characterized by the following features.

27. The cylindrical body is compressed into a structure in which the axial contour projection surface exhibits a C-shape, a helical line, or a wavy closed ring. The implant system according to claim 26.

28. When the cylindrical body is compressed into a structure in which the axial contour projection plane exhibits a C-shape, the outer surface of the compressed cylindrical body surrounds the wireless sensor at least partially. The implant system according to feature 27.

29. When the cylindrical body is compressed into a structure in which the axial contour projection plane exhibits a helical shape, the wireless sensor is located either in parallel outside the cylindrical body or inside the cylindrical body. The implant system according to feature 27.

30. When the cylindrical body is compressed into a structure in which the axial contour projection surface exhibits a wavy closed ring, the wireless sensor is located inside the cylindrical body. The implant system according to feature 27.

31. The implant further includes a wireless sensor and a signal receiving device used to transmit signals, The implant system according to any one of claims 26 to 30, characterized by the following:

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