Flow guide device for blood diversion and blood pressure monitoring

Abstract

The invention relates to a flow guiding device for blood flow turning and blood pressure monitoring. The flow guiding device comprises a first sheath tube, a second sheath tube, a connecting mechanism arranged on the first sheath tube and the second sheath tube, an expansion mechanism arranged on the first sheath tube and a flow guiding mechanism arranged on the first sheath tube. The first sheathing canal comprises a first sheathing canal seat, a first hose fixedly arranged on the first sheathing canal seat, a second hose fixedly arranged on the first hose, a third hose fixedly arranged on the first hose and a mounting seat fixedly arranged on the first hose; the expansion mechanism comprises a first sliding groove formed in the first sheath tube seat, a second sliding groove fixedly formed in the first sheath tube seat, a driving assembly arranged on the first sliding groove and the second sliding groove, and a fixing assembly arranged on the installation seat.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a flow diversion device for blood circulation and blood pressure monitoring. Background Art

[0002] Carotid artery disease typically manifests itself in the form of plaque deposits in the blood vessels, which narrow the junction between the common and internal carotid arteries. These plaque deposits increase the risk of embolic particles being generated and entering the brain's vasculature, leading to neurological consequences such as transient ischemic attacks, ischemic strokes, or death. Furthermore, if the narrowing becomes severe, blood flow to the brain is impeded, with serious, sometimes fatal, consequences.

[0003] The existing treatment method is to insert a covered stent in the aortic arch. Since the covered stent will cause blockage of the left common carotid artery and the left subclavian artery, preventing blood supply, a blood diversion device is also required to open windows at the contact points between the covered stent and the left common carotid artery and the left subclavian artery. The sheath in the existing blood diversion device is fixed with a balloon at the head. However, after the balloon is inflated and fixed, plaques and some stent debris detached from the blood vessels will accumulate on the surface of the balloon, unable to enter the sheath and be filtered by the filter. Summary of the Invention

[0004] The content of this application is used to briefly introduce concepts that will be described in detail in the detailed description section below. The content of this application is not intended to identify key features or essential features of the technical solution for which protection is sought, nor is it intended to limit the scope of the technical solution for which protection is sought.

[0005] In order to solve the technical problems mentioned in the above background technology section, some embodiments of the present application provide a diversion device for blood circulation and blood pressure monitoring, including a first sheath tube, a second sheath tube, a connecting mechanism provided on the first sheath tube and the second sheath tube, an expansion mechanism provided on the first sheath tube, and a diversion mechanism provided on the first sheath tube; the first sheath tube includes a first sheath tube seat, a first hose fixed on the first sheath tube seat, a second hose fixed on the first hose, a third hose fixed on the first hose, and a mounting seat fixed on the first hose; the expansion mechanism includes a first slide groove provided on the first sheath tube seat, a second slide groove fixed on the first sheath tube seat, a driving component provided on the first slide groove and the second slide groove, and a fixing component provided on the mounting seat.

[0006] Specifically, the driving assembly includes a driving ring slidably arranged on the first sliding groove and the second sliding groove, a first mounting groove fixedly arranged on the first sheath seat, a first pressure plate slidably arranged on the first mounting groove, a first connecting rod with one end fixed on the first pressure plate and the other end fixed on the driving ring, and a first locking assembly symmetrically arranged on the driving ring and the first sheath seat.

[0007] Specifically, the first locking assembly includes a third slide groove fixed on the drive ring, a plurality of first racks fixed on the first sheath seat, a first pressing seat slidably arranged on the third slide groove, and a first spring with one end fixed on the first pressing seat and the other end fixed on the first sheath seat.

[0008] Specifically, the fixing assembly includes a first airbag with one end fixed on the first mounting groove and the other end fixed on the first pressure plate, a first balloon arranged on the mounting seat, and a fourth hose with one end connected to the first airbag and the other end connected to the first balloon.

[0009] Specifically, the diversion mechanism includes an unlocking component symmetrically arranged on the first sheath seat, a sealing component symmetrically arranged on the first sheath seat, and a plurality of rotating components arranged on the mounting seat.

[0010] Specifically, the unlocking assembly includes a fourth slide groove fixed on the first sheath seat, an unlocking ring slidably arranged on the fourth slide groove, a fifth slide groove fixed on the first sheath seat, a second pressing seat slidably arranged on the fifth slide groove, a plurality of second racks fixed on the first sheath seat, and a second spring with one end fixed on the second pressing seat and the other end fixed on the first sheath seat.

[0011] Specifically, the sealing assembly includes a second mounting groove fixedly provided on the first sheath seat, a third mounting groove fixedly provided on the first sheath seat and connected to the second mounting groove, a first sealing plate slidably provided on the second mounting groove, a second sealing plate slidably provided on the third mounting groove, a second connecting rod fixedly provided on the first sealing plate and the second sealing plate and fixedly connected to the unlocking ring, and a third spring with one end fixedly provided on the second sealing plate and the other end fixedly provided on the first sheath seat.

[0012] Specifically, the rotating assembly includes a guide port fixed on the mounting seat, a guide plate rotatably mounted on the mounting seat, and a traction line with one end fixed on the guide plate and the other end fixed on the second sealing plate.

[0013] Specifically, the connecting mechanism includes a first connecting pipe, a first three-way valve switch, a second connecting pipe, a filter, a third connecting pipe, a flow regulator, a second three-way valve switch, and a fourth connecting pipe.

[0014] The beneficial effects of the present invention are: (1) A diversion mechanism is provided; since the first balloon is at a certain distance from the head of the first sheath, plaques and stent debris that have fallen off from some blood vessels accumulate on the surface of the first balloon and cannot be diverted, a rotating assembly and an unlocking assembly are required to divert these plaques and debris to the connecting mechanism for filtration; if no diversion and filtration is performed, these plaques and debris will directly enter the cerebral blood vessels after the first balloon contracts, causing blood vessel blockage; when in use, the second pressing seat on both sides is pressed, the second pressing seat slides on the fifth slide, the second spring is compressed, and the second pressing seat is disengaged from the second rack, and the unlocking ring is moved downward to the bottom of the fourth slide, the second pressing seat is released, and the second spring pushes the second pressing seat to reset and engage with the second rack to achieve fixation. After the unlocking ring moves downward, the traction line is in a relaxed state, the torsion spring drives the guide plate to rotate and tilt, and pushes the first balloon to deform, the diversion port is opened, and the traction line is in a tight state again; the plaques and stent debris that have fallen off from the blood vessels can enter the first hose through the diversion port and enter the connecting mechanism for filtration.

[0015] (2) A fixing assembly is provided. When in use, the first pressing seats on both sides are pressed to make the first pressing seats slide on the third slide groove, the first spring is compressed, the first pressing seat is disengaged from the first rack, and then the driving ring is pushed to make the fixing assembly work to fix. After the fixation is completed, the first pressing seat is released, and the first spring pushes the first pressing seat to reset. The first pressing seat and the first rack are re-engaged. When the first pressure plate slides downward on the first mounting groove, it squeezes the first airbag, so that the gas enters the first balloon through the first hose, causing the first balloon to expand. The outer side of the first balloon fits the inner wall of the blood vessel, and the blood vessel will press the first balloon in reverse, fixing it through pressure and friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of this application are used to provide a further understanding of this application and make other features, purposes and advantages of this application more apparent. The drawings and descriptions of the exemplary embodiments of this application are used to explain this application and do not constitute an improper limitation on this application.

[0017] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the elements and components are not necessarily drawn to scale.

[0018] In the attached figure: Figure 1 It is a structural schematic diagram of the present invention; Figure 2 is a bottom view of the first sheath; Figure 3 for Figure 2 Partial line section of AA; Figure 4 for Figure 3A partial enlarged view of point B in the middle; Figure 5 for Figure 3 A partial enlarged view of point C in the middle; Figure 6 for Figure 3 Linear section of the middle DD; Figure 7 for Figure 6 A partial enlarged view of point E in the middle; Figure 8 for Figure 2 Partial line section of the FF; Figure 9 for Figure 8 A partial enlarged view of point G in the middle; Figure 10 for Figure 8 A partial enlarged view of the H in the middle; Figure 11 for Figure 8 Linear section of II; Figure 12 This is a schematic diagram of the present invention when it is working. DETAILED DESCRIPTION

[0019] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of protection of the present disclosure.

[0020] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0021] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0022] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, they should be understood as "one or more".

[0023] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0024] Reference Figures 1-12As shown, the diversion device for blood flow and blood pressure monitoring described in the present invention includes a first sheath tube 1, a second sheath tube 2, a connecting mechanism 3 provided on the first sheath tube and the second sheath tube, an expansion mechanism 4 provided on the first sheath tube, and a diversion mechanism 5 provided on the first sheath tube; the first sheath tube includes a first sheath tube seat 11, a first hose 12 fixedly provided on the first sheath tube seat, a second hose 13 fixedly provided on the first hose, a third hose 14 fixedly provided on the first hose, and a mounting seat 15 fixedly provided on the first hose; the expansion mechanism includes a first slide 41 provided on the first sheath tube seat, a second slide 42 fixedly provided on the first sheath tube seat, a first slide and a second slide 43 provided on the first slide and the third slide. The driving component 43 on the second slide and the fixing component 44 on the mounting seat; the first sheath is inserted into the coated stent; the second sheath is inserted into the femoral vein; the connecting mechanism is the connecting part between the first sheath and the second sheath, which can filter the diverted blood, adjust the flow rate and monitor the pressure; the second hose and the third hose are arranged in the first hose, and can be inserted with a microcatheter and a puncture needle for further fixation and puncture window treatment operations; the mounting seat is made of hard material; the driving component is used to drive the fixing component to fix the first sheath; the diversion mechanism can divert blood into the first hose, and enter the second sheath through the connecting mechanism, and finally flow back to the femoral vein, realizing the blood diversion function.

[0025] Specifically, the driving assembly includes a driving ring 431 slidingly arranged on the first sliding groove and the second sliding groove, a first mounting groove 432 fixedly arranged on the first sheath seat, a first pressure plate 433 slidingly arranged on the first mounting groove, a first connecting rod 434 with one end fixedly arranged on the first pressure plate and the other end fixedly arranged on the driving ring, and a first locking assembly 435 symmetrically arranged on the driving ring and the first sheath seat; the driving ring can slide on the first sliding groove and the second sliding groove, and drive the first pressure plate to slide on the first mounting groove through the first connecting rod.

[0026] Specifically, the first locking assembly includes a third slide groove 4351 fixed on the driving ring, a plurality of first racks 4352 fixed on the first sheath seat, a first pressing seat 4353 slidably arranged on the third slide groove, and a first spring 4354 fixed at one end on the first pressing seat and fixed at the other end on the first sheath seat; two connecting rods are symmetrically provided on the first pressing seat, the connecting rods are in contact with the first rack, and teeth are provided on the contact surface, which engage with the first rack; when in use, the first pressing seats on both sides are pressed to make the first pressing seat slide on the third slide groove, the first spring is compressed, the first pressing seat is disengaged from the first rack, and then the driving ring is pushed to make the fixing assembly work and fix. After the fixing is completed, the first pressing seat is released, the first spring pushes the first pressing seat to reset, and the first pressing seat and the first rack are re-engaged to prevent the driving ring from moving and causing the fixing assembly to loosen; when in use, it is necessary to press the first pressing seats on both sides at the same time to prevent misoperation.

[0027] Specifically, the fixing assembly includes a first airbag 441, one end of which is fixed on the first mounting groove and the other end is fixed on the first pressure plate, a first balloon 442 is provided on the mounting seat, and a fourth hose 443, one end of which is connected to the first airbag and the other end is connected to the first balloon; when the first pressure plate slides downward on the first mounting groove, it will squeeze the first airbag, so that the gas enters the first balloon through the first hose, causing the first balloon to expand, and the outer side of the first balloon fits against the inner wall of the blood vessel, and the blood vessel will reversely press the first balloon, and fix it through pressure and friction.

[0028] Specifically, the diversion mechanism includes an unlocking component 51 symmetrically arranged on the first sheath seat, a sealing component 52 symmetrically arranged on the first sheath seat, and multiple rotating components 53 arranged on the mounting seat; since the first balloon is at a certain distance from the first sheath head, plaques and stent debris detached from some blood vessels accumulate on the surface of the first balloon and cannot be diverted, so it is necessary to set a rotating component and an unlocking component to divert these plaques and debris to the connecting mechanism for filtration; if no diversion and filtration are performed, when the first balloon is deflated, these plaques and debris will directly enter the brain blood vessels, causing blood vessel blockage.

[0029] Specifically, the unlocking assembly includes a fourth slide groove 511 fixedly arranged on the first sheath seat, an unlocking ring 512 slidably arranged on the fourth slide groove, a fifth slide groove 513 fixedly arranged on the first sheath seat, a second pressing seat 514 slidably arranged on the fifth slide groove, a plurality of second racks 515 fixedly arranged on the first sheath seat, and a second spring 516 fixedly arranged on the second pressing seat at one end and fixedly arranged on the first sheath seat at the other end; the unlocking ring has only two fixed positions, namely the top and bottom of the fourth slide groove; two connecting rods are symmetrically provided on the second pressing seat, the connecting rods are in contact with the second rack, and teeth are provided on the contact surface to engage with the second rack; when in use, the second pressing seats on both sides are pressed, the second pressing seats slide on the fifth slide groove, and the second spring is compressed. At this time, the second pressing seat is disengaged from the second rack, and the unlocking ring is moved downward to the bottom of the fourth slide groove, the second pressing seat is released, and the second spring pushes the second pressing seat to reset and engage with the second rack to achieve fixation; when in use, it is necessary to press the second pressing seats on both sides at the same time to prevent misoperation.

[0030] Specifically, the sealing assembly includes a second mounting groove 521 fixed on the first sheath seat, a third mounting groove 522 fixed on the first sheath seat and connected to the second mounting groove, a first sealing plate 523 slidably arranged on the second mounting groove, a second sealing plate 524 slidably arranged on the third mounting groove, a second connecting rod 525 fixed on the first sealing plate and the second sealing plate and fixedly connected to the unlocking ring, and a third spring 526 with one end fixed on the second sealing plate and the other end fixed on the first sheath seat; when the unlocking ring moves downward, it will drive the first sealing plate and the second sealing plate to move downward through the second connecting rod. When the unlocking ring moves to the bottom of the fourth slide groove, the first sealing plate fits with the bottom of the second mounting groove, and the second sealing plate fits with the bottom of the third mounting groove.

[0031] Specifically, the rotating assembly includes a guide port 531 fixed on the mounting seat, a guide plate 532 rotatably arranged on the mounting seat, a traction line 533 with one end fixed on the guide plate and the other end fixed on the second sealing plate; a torsion spring is provided at the rotating connection of the guide plate; when the unlocking ring is located at the top of the fourth slide groove, the traction line is in a taut state, and when the unlocking ring moves to the bottom of the fourth slide groove, the traction line is in a relaxed state, the torsion spring drives the guide plate to rotate and tilt, and pushes the first balloon to deform, the guide port opens, and the traction line is in a taut state again; plaques and stent debris detached from the blood vessel can enter the first hose through the guide port and enter the connecting mechanism for filtration; since the traction line will pass through the first hose and the first sheath seat, a sealing assembly needs to be set for sealing.

[0032] Specifically, the connecting mechanism includes a first connecting tube 31, a first three-way valve switch 32, a second connecting tube 33, a filter 34, a third connecting tube 35, a flow regulator 36, a second three-way valve switch 37, and a fourth connecting tube 38; a pressure sensor can be set at the first connecting tube and connected to a pressure monitor using a data transmission line to detect the blood pressure in the sheath in real time; the first three-way valve switch, the second three-way valve switch, the filter and the flow regulator are all existing technologies; the filter can filter plaques that fall off in the blood vessels and debris that falls off the stent; the flow regulator can adjust the blood flow rate.

[0033] Refer to the instruction manual Figure 12 During actual use, a microcatheter and a puncture needle can be inserted into the second and third hoses respectively. The microcatheter is also provided with a fixing mechanism, which can enter the branch blood vessels with smaller diameters for fixation, thereby better fixing the first sheath; branches A, B and C are all connected to the brain blood vessels. Since the microballoon will completely block branch A after expansion, if the brain is insufficiently supplied with blood, the microballoon can be retracted to allow blood to re-enter branch A. The first balloon is always in an expanded state, so the retraction of the microballoon will not affect the fixation of the first sheath.

[0034] The above descriptions are merely some preferred embodiments of the present disclosure and illustrate the underlying technical principles. Those skilled in the art should understand that the scope of the invention encompassed by the embodiments of the present disclosure is not limited to technical solutions formed by specific combinations of the aforementioned technical features. It also encompasses other technical solutions formed by any combination of the aforementioned technical features or their equivalents, without departing from the aforementioned inventive concept. For example, a technical solution formed by replacing the aforementioned features with (but not limited to) technical features with similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A blood diversion and blood pressure monitoring device, characterized by: The invention comprises a first sheath tube (1), a second sheath tube (2), a connecting mechanism (3) provided on the first sheath tube and the second sheath tube, an expansion mechanism (4) provided on the first sheath tube, and a flow guide mechanism (5) provided on the first sheath tube; the first sheath tube comprises a first sheath tube seat (11), a first hose (12) fixedly provided on the first sheath tube seat, a second hose (13) fixedly provided on the first hose, a third hose (14) fixedly provided on the first hose, and a mounting seat (15) fixedly provided on the first hose; the expansion mechanism comprises a first slide groove (41) provided on the first sheath tube seat, a second slide groove (42) fixedly provided on the first sheath tube seat, a driving component (43) provided on the first slide groove and the second slide groove, and a fixing component (44) provided on the mounting seat.

2. A blood diversion and blood pressure monitoring device according to claim 1, characterized in that: The driving assembly includes a driving ring (431) slidably arranged on the first sliding groove and the second sliding groove, a first mounting groove (432) fixedly arranged on the first sheath tube seat, a first pressure plate (433) slidably arranged on the first mounting groove, a first connecting rod (434) with one end fixedly arranged on the first pressure plate and the other end fixedly arranged on the driving ring, and a first locking assembly (435) symmetrically arranged on the driving ring and the first sheath tube seat.

3. The blood diversion and blood pressure monitoring device according to claim 2, characterized in that: The first locking assembly includes a third slide groove (4351) fixed on the drive ring, a plurality of first racks (4352) fixed on the first sheath seat, a first pressing seat (4353) slidably arranged on the third slide groove, and a first spring (4354) with one end fixed on the first pressing seat and the other end fixed on the first sheath seat.

4. The blood diversion and blood pressure monitoring device according to claim 2, characterized in that: The fixing assembly comprises a first airbag (441) having one end fixed on the first mounting groove and the other end fixed on the first pressure plate, a first ball balloon (442) provided on the mounting seat, and a fourth hose (443) having one end in communication with the first airbag and the other end in communication with the first ball balloon.

5. The blood diversion and blood pressure monitoring device according to claim 1, characterized in that: The flow guiding mechanism comprises an unlocking component (51) symmetrically arranged on the first sheath tube seat, a sealing component (52) symmetrically arranged on the first sheath tube seat, and a plurality of rotating components (53) arranged on the mounting seat.

6. The blood diversion and blood pressure monitoring device according to claim 5, characterized in that: The unlocking assembly includes a fourth slide groove (511) fixed on the first sheath seat, an unlocking ring (512) slidably arranged on the fourth slide groove, a fifth slide groove (513) fixed on the first sheath seat, a second pressing seat (514) slidably arranged on the fifth slide groove, a plurality of second racks (515) fixed on the first sheath seat, and a second spring (516) with one end fixed on the second pressing seat and the other end fixed on the first sheath seat.

7. The blood diversion and blood pressure monitoring device according to claim 6, characterized in that: The sealing assembly includes a second mounting groove (521) fixedly arranged on the first sheath seat, a third mounting groove (522) fixedly arranged on the first sheath seat and connected to the second mounting groove, a first sealing plate (523) slidably arranged on the second mounting groove, a second sealing plate (524) slidably arranged on the third mounting groove, a second connecting rod (525) fixedly arranged on the first sealing plate and the second sealing plate and fixedly connected to the unlocking ring, and a third spring (526) with one end fixedly arranged on the second sealing plate and the other end fixedly arranged on the first sheath seat.

8. The blood diversion and blood pressure monitoring device according to claim 7, characterized in that: The rotating assembly comprises a guide port (531) fixedly arranged on the mounting seat, a guide plate (532) rotatably arranged on the mounting seat, and a traction line (533) having one end fixedly arranged on the guide plate and the other end fixedly arranged on the second sealing plate.

9. The blood diversion and blood pressure monitoring device according to claim 1, characterized in that: The connecting mechanism comprises a first connecting pipe (31), a first three-way valve switch (32), a second connecting pipe (33), a filter (34), a third connecting pipe (35), a flow regulator (36), a second three-way valve switch (37), and a fourth connecting pipe (38).

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