Implantable blood pressure detection device

Abstract

The invention relates to the technical field of medical equipment, in particular to an implantable blood pressure detection device. The implantable blood pressure detection device comprises an expandable support and a blood pressure detector, a clamping structure is arranged on the inner side of the expandable support, and the blood pressure detector and the clamping structure are detachably assembled. The blood pressure detector has the advantages that the structural design is simple and reasonable, the blood pressure detector and the expandable support are conveniently and detachably assembled, and the blood pressure detector can be conveniently taken out.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to an implantable blood pressure detection device. Background Art

[0002] When monitoring a patient's body today, medical devices are usually implanted in the patient's body to monitor one or more physiological parameters and / or provide therapeutic functions. For example, sensors or transmitters can be placed in the body to monitor various characteristics, such as temperature, blood pressure, deformation, fluid flow, chemical properties, electrical properties, magnetic properties, etc. In addition, medical devices can be implanted to implement one or more therapeutic functions, such as drug delivery, cardiac pacing, cardiac defibrillation, electrical stimulation, etc.

[0003] Blood pressure is a particularly important parameter for the average patient. One or more implantable pressure sensing modules may be connected to a cardiac rhythm management (CRM) device to facilitate optimization of the CRM device settings. In such a system, the pressure sensing module is delivered intravenously to a target vessel (e.g., the pulmonary artery) and secured within the vessel using a variety of fixation techniques. Precise placement of the sensing module is an important factor in accurately and reliably measuring the desired parameter.

[0004] However, existing implantable sensors usually cannot be removed from the patient's body, and long-term use may cause problems such as blood vessel blockage.

[0005] Based on this, it is necessary to develop a removable implantable blood pressure detection device to overcome the above technical problems. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide an implantable blood pressure detection device, which effectively overcomes the defects of the prior art.

[0007] The technical solution of the present invention to solve the above technical problems is as follows:

[0008] An implantable blood pressure detection device comprises an expandable stent and a blood pressure detector. A clamping structure is provided on the inner side of the expandable stent, and the blood pressure detector and the clamping structure are detachably assembled.

[0009] Based on the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, the expandable stent is a medical alloy wire braided stent.

[0011] Furthermore, the expandable stent is a stent woven from degradable silk threads.

[0012] Furthermore, the clamping structure includes a C-shaped and elastic clamping body, both ends of the clamping body are respectively provided with extrusion connection parts close to each other, both ends of the blood pressure detector are respectively provided with clamping grooves adapted to the two ends of the clamping body, the blood pressure detector is inserted into the clamping body between the extrusion connection parts, the two ends of the clamping body are respectively embedded in the clamping grooves at the two ends of the blood pressure detector, and clamp the blood pressure detector, and the extrusion connection parts can be relatively separated under the action of external force, so that the two ends of the clamping body are opened, thereby facilitating the removal of the blood pressure detector.

[0013] Furthermore, the clamping body is formed by bending a degradable wire strip, and the extruded connecting portion is formed by bending the end of the wire strip into a return shape or a hole shape.

[0014] Furthermore, the blood pressure detector is provided with a connecting ring at a position corresponding to the opening end of the clamping structure for facilitating its removal.

[0015] Furthermore, it also includes a recovery device, which includes a catheter, a pull rod and an operating handle. One end of the catheter is provided with an opening structure that can be opened or closed. The pull rod passes through both ends of the catheter. One end of the pull rod is provided with a hook portion that is adapted to the connecting ring. The other end of the pull rod is connected to the operating handle. The pull rod can move relative to the catheter. The opening structure of the recovery device extends between the two extrusion connecting portions, and after the opening structure is operated to open, the two ends of the clamping body are opened. The pull rod is used to hang the connecting ring through the hook, and pull the blood pressure detector out of the clamping body under external force.

[0016] Furthermore, a hand-held portion is provided at the other end of the catheter.

[0017] Furthermore, the above-mentioned expansion structure includes a fixed plate and a movable plate, both of which are long strips. The above-mentioned fixed plate is integrally connected to one side of one end of the above-mentioned catheter, and the above-mentioned movable plate is hinged to the other side of the one end of the above-mentioned catheter. The above-mentioned movable plate is externally connected to a pulling wire, and the above-mentioned pulling wire passes through a pulling channel adapted inside the side wall of the above-mentioned catheter and passes out from the other end of the above-mentioned catheter.

[0018] Furthermore, the blood pressure detector is a blood pressure sensor.

[0019] The beneficial effects of the present invention are: the structural design is simple and reasonable, the blood pressure detector is convenient to be assembled with the expandable bracket, and the two are detachably assembled, which also facilitates the removal of the blood pressure detector. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the implantable blood pressure detection device of the present invention;

[0021] Figure 2It is a structural schematic diagram of the implantable blood pressure detection device of the present invention from another perspective;

[0022] Figure 3 It is a schematic diagram of the structure decomposition of the implantable blood pressure detection device of the present invention;

[0023] Figure 4 A schematic diagram of the structure of an implantable blood pressure detection device of the present invention equipped with a recovery device;

[0024] Figure 5 It is a structural cross-sectional view of the recovery device in the implantable blood pressure detection device of the present invention;

[0025] Figure 6 The use state of the recovery device in the implantable blood pressure detection device of the present invention Figure 1 ;

[0026] Figure 7 The use state of the recovery device in the implantable blood pressure detection device of the present invention Figure 2 .

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 1. Expandable stent; 2. Blood pressure detector; 3. Retrieval device; 11. Clamping structure; 21. Clamping groove; 22. Connecting ring; 31. Catheter; 32. Pull rod; 33. Operating handle; 34. Expanding structure; 111. Clamping body; 112. Extrusion connection part; 341. Fixed plate; 342. Movable plate. DETAILED DESCRIPTION

[0029] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0030] Example

[0031] like Figure 1 , 2 As shown in Figure 3, the implantable blood pressure detection device of this embodiment includes an expandable stent 1 and a blood pressure detector 2. A clamping structure 11 is provided on the inner side of the expandable stent 1, and the blood pressure detector 2 and the clamping structure 11 are detachably assembled.

[0032] In the implantable blood pressure detection device of the present embodiment, the expandable stent 1 adopts a conventional intravascular expandable stent (self-expanding type), and a clamping structure 11 adapted to the blood pressure detector 2 is arranged on the inner side of the expandable stent 1. The blood pressure detector 2 is clamped and mounted at the clamping structure 11, and then the entire device is placed in the target position in the blood vessel. Since the blood pressure detector 2 and the clamping structure 11 are detachable clamping assemblies, the blood pressure detector 2 and the clamping structure 11 can be peeled off and removed by using matching recovery equipment. The overall structural design is simple and reasonable, and the blood pressure detector is convenient to assemble with the expandable stent. The detachable assembly of the two also facilitates the removal of the blood pressure detector.

[0033] Of course, the blood pressure detector 2 can also be replaced by an existing miniature detection device with other functions, such as an implantable product for detecting temperature and the like.

[0034] In this embodiment, the expandable stent 1 can be a conventional medical alloy wire braided stent, such as a mesh stent braided with nickel-titanium alloy wire.

[0035] Of course, the expandable stent 1 may also be a stent woven from degradable silk threads. After the blood pressure monitoring task is completed for a period of time, the blood pressure detector 2 is taken out, and the entire expandable stent 1 can subsequently degrade by itself without the need to be taken out.

[0036] As a preferred embodiment, Figure 1 , 2 As shown in Figure 3, the clamping structure 11 includes a C-shaped and elastic clamping body 111, and the two ends of the clamping body 111 are respectively provided with extrusion connecting parts 112 close to each other, and the two ends of the blood pressure detector 2 are respectively provided with clamping grooves 21 adapted to the two ends of the clamping body 111. The blood pressure detector 2 is inserted into the clamping body 111 between the extrusion connecting parts 112, and the two ends of the clamping body 111 are respectively embedded in the clamping grooves 21 at the two ends of the blood pressure detector 2 and clamp the blood pressure detector 2. The extrusion connecting parts 112 can be relatively separated under the action of external force, so that the two ends of the clamping body 111 are opened, thereby facilitating the removal of the blood pressure detector 2.

[0037] In the above-mentioned implementation scheme, in the initial state, in fact, the distance between the two ends of the clamping body 111 is smaller than the width dimension between the two ends of the blood pressure detector 2. When clamping, the two ends of the clamping body 111 need to be stretched open. After the blood pressure detector 2 is placed, the two ends of the clamping body 111 are respectively embedded in the clamping grooves 21 at the two ends of the blood pressure detector 2 to clamp the blood pressure detector 2. At the same time, the clamping grooves 21 are used to limit the position so that it will not detach. At the same time, the two extruded connecting parts 112 are located on one side of the blood pressure detector 2, and the distance between the two is smaller than the distance between the two ends of the clamping body 111. The purpose of such a design is that the two extruded connecting parts 112 are located on one side of the blood pressure detector 2 to limit the blood pressure detector 2 so that it will not detach through one side of the clamping body 111. When it needs to be taken out, the two extruded connecting parts 112 are stretched open (away from each other, such as Figure 5 As shown in FIG. 1 , the two ends of the clamping body 111 can be driven to separate and open, and at this time, the blood pressure detector 2 can be pulled out from the opening on one side of the clamping body 111 (that is, between the two extrusion connection parts 112). The overall design is relatively simple, and the clamping body 111 clamps the blood pressure detector 2 relatively firmly.

[0038] As a preferred embodiment, the clamping body 111 is formed by bending a degradable wire strip, and the extrusion connection portion 112 is formed by bending the end of the wire strip into a loop shape or a hole shape.

[0039] In the above embodiment, the clamping body 111 is made of a bent degradable material strip. After the blood pressure detector 2 is taken out, the clamping body 111 can be degraded after a certain period of time and does not need to be dismantled.

[0040] In this embodiment, the clamping structure 11 can be woven integrally with the expandable stent 1 , or can be added on the inner side of the expandable stent 1 (woven).

[0041] As a preferred embodiment, the blood pressure detector 2 is provided with a connecting ring 22 at a position corresponding to the opening end of the clamping structure 11 for facilitating its removal.

[0042] In the above embodiment, the design of the connecting ring 22 is convenient for pulling out the blood pressure detector 2 through the connecting ring 22 using a recovery device or a tool.

[0043] As a preferred embodiment, Figure 4 , 5As shown in , 6 and 7, it also includes a recovery device 3, the recovery device 3 includes a catheter 31, a pull rod 32 and an operating handle 33, one end of the catheter 31 is provided with a support structure 34 that can be opened or closed, the pull rod 32 passes through both ends of the catheter 31, one end of the pull rod 32 is provided with a hook portion a adapted to the connecting ring 22, the other end of the pull rod 32 is connected to the operating handle 33, the pull rod 32 can move relative to the catheter 31, the support structure 34 of the recovery device 3 extends between the two extrusion connecting portions 112, and after the support structure 34 is operated to open, the two ends of the clamping body 111 are opened, the pull rod 32 is used to hang the connecting ring 22 through the hook, and pull the blood pressure detector 2 out of the clamping body 111 under external force.

[0044] In the above embodiment, when it is necessary to remove, one end of the conduit 31 (with the expansion structure 34) of the recovery device 3 enters close to the clamping body 111, and then the expansion structure 34 is aligned and extended between the two extrusion connection parts 112, and the expansion structure 34 is expanded, so that the two extrusion connection parts 112 are opened and separated (such as Figure 5 As shown), the two extrusion connecting parts 112 can drive the two ends of the clamping body 111 to open. Next, the pull rod 32 is pushed inward by the operating handle 33 so that the pull rod 32 extends out of the port of the catheter 31, and then hooked with the connecting ring 22 through the hook part a of the pull rod 32. Next, the operating handle 33 is pulled outward to pull the blood pressure detector 2 outward for a certain distance. Finally, when the catheter 31 is withdrawn, the blood pressure detector 2 is pulled out together. The operation is relatively simple and convenient.

[0045] In this embodiment, the other end of the catheter 31 is provided with a hand-grip portion b for easy holding.

[0046] As a preferred embodiment, the above-mentioned expansion structure 34 includes a fixed plate 341 and a movable plate 342, both of which are long strips. The above-mentioned fixed plate 341 is integrally connected to one side of one end of the above-mentioned catheter 31, and the above-mentioned movable plate 342 is hinged to the other side of one end of the above-mentioned catheter 31. The above-mentioned movable plate 342 is externally connected with a pulling wire, and the above-mentioned pulling wire passes through the pulling channel adapted inside the side wall of the above-mentioned catheter 31 and passes through the other end of the above-mentioned catheter 31.

[0047] In the above embodiment, the fixed sheet 341 remains stationary and extends along the long axis direction of the catheter 31 , and the movable sheet 342 can be opened by pulling the pulling wire from the outside.

[0048] Of course, the assembly of the movable plate 342 and the fixed plate 341 at one end of the catheter 31 can also refer to the existing biopsy forceps head design (such as patent: CN114795307A a biopsy forceps that can display the position of the forceps body in real time), and the opening and closing of the forceps head can be operated in vitro.

[0049] It should be noted that the blood pressure detector 2 is a flat block, and its thickness is close to the spacing between the fixed plate 341 and the movable plate 342 in the normal state. After hooking the connecting ring 22 of the blood pressure detector 2 with the hook of the pull rod 32, pull it outward, and then operate the support structure 34 to disengage the two extruded connecting parts 112 (in this state, part of the blood pressure detector 2 is still located between the two extruded connecting parts 112). Next, rotate the catheter 31 at a certain angle so that the fixed plate 341 and the movable plate 342 can be located on both sides of the thickness direction of the blood pressure detector 2. Slightly move the catheter 31 (or pull the pull rod 32) so that the edge of the blood pressure detector 2 is embedded between the fixed plate 341 and the movable plate 342 (such as Figure 6 As shown), the catheter 31 is then withdrawn. During this process, the fixed sheet 341 and the movable sheet 342 play a certain degree of "clamping and limiting" role on the blood pressure detector 2, thereby ensuring that the blood pressure detector 2 will not be skewed during the withdrawal process, thereby ensuring that it is well removed.

[0050] In this embodiment, the blood pressure detector 2 may be a conventional medical blood pressure sensor (miniature). The specific model is adapted according to actual needs, and a square-shaped box body is the best product appearance design.

[0051] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0056] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. An implantable blood pressure detection device, characterized in that: It comprises an expandable stent (1) and a blood pressure detector (2); a clamping structure (11) is provided on the inner side of the expandable stent (1); and the blood pressure detector (2) and the clamping structure (11) are detachably assembled.

2. An implantable blood pressure detection device according to claim 1, characterized in that: The expandable stent (1) is a medical alloy wire braided stent.

3. The implantable blood pressure detection device according to claim 1, characterized in that: The expandable stent (1) is a stent woven from degradable silk threads.

4. An implantable blood pressure detection device according to any one of claims 1 to 3, characterized in that: The clamping structure (11) comprises a C-shaped and elastic clamping body (111), the two ends of the clamping body (111) are respectively provided with mutually close extrusion connection parts (112), the two ends of the blood pressure detector (2) are respectively provided with clamping grooves (21) adapted to the two ends of the clamping body (111), the blood pressure detector (2) is inserted into the clamping body (111) between the extrusion connection parts (112), the two ends of the clamping body (111) are respectively embedded in the clamping grooves (21) at the two ends of the blood pressure detector (2), and the blood pressure detector (2) is clamped, and the extrusion connection parts (112) can be relatively separated under the action of external force, so that the two ends of the clamping body (111) are opened, thereby facilitating the removal of the blood pressure detector (2).

5. An implantable blood pressure detection device according to claim 4, characterized in that: The clamping body (111) is formed by bending a degradable wire strip, and the extrusion connection portion (112) is formed by bending the end of the wire strip into a loop shape or a hole shape.

6. The implantable blood pressure detection device according to claim 4, characterized in that: The blood pressure detector (2) is provided with a connecting ring (22) at a position corresponding to the opening end of the clamping structure (11) for facilitating its removal.

7. An implantable blood pressure detection device according to claim 6, characterized in that: It also includes a recovery device (3), which includes a catheter (31), a pull rod (32) and an operating handle (33). One end of the catheter (31) is provided with an opening structure (34) that can be opened or closed. The pull rod (32) passes through both ends of the catheter (31). One end of the pull rod (32) is provided with a hook portion that is compatible with the connecting ring (22). The other end of the pull rod (32) is connected to the operating handle (33). The pull rod (32) can move relative to the catheter (31). The opening structure (34) of the recovery device (3) extends between the two extrusion connecting parts (112), and after the opening structure (34) is operated to open, the two ends of the clamping body (111) are opened. The pull rod (32) is used to hang the connecting ring (22) through the hook portion, and pull the blood pressure detector (2) out of the clamping body (111) under external force.

8. An implantable blood pressure detection device according to claim 7, characterized in that: The other end of the catheter (31) is provided with a hand-held portion.

9. The implantable blood pressure detection device according to claim 7, characterized in that: The support structure (34) includes a fixed plate (341) and a movable plate (342), both of which are long strips. The fixed plate (341) is integrally connected to one side of one end of the catheter (31), and the movable plate (342) is hinged to the other side of one end of the catheter (31). A pulling wire is connected to the outside of the movable plate (342), and the pulling wire passes through a pulling channel adapted inside the side wall of the catheter (31) and passes out from the other end of the catheter (31).

10. The implantable blood pressure detection device according to claim 4, characterized in that: The blood pressure detector (2) is a blood pressure sensor.

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