Delivery device and artificial blood vessel system

Abstract

The invention relates to a conveying device and an artificial blood vessel system.The conveying device is characterized in that a guide component is used for forming a guide rail, a supporting assembly is arranged at the far end of the guide component and used for sleeving a supporting ring, the supporting assembly has an outward supporting state and an inward retracting state, the outward supporting state of the supporting assembly is used for locking the supporting ring, and the inward retracting state of the supporting assembly is used for releasing the supporting ring; the driving component is movably assembled relative to the guiding component along the guiding track, a driving part of the driving component is used for being in driving fit with the supporting assembly, the guiding track of the guiding component is provided with a track locking section and a track releasing section, and the driving part of the driving component moves to the track locking section to drive the supporting assembly to be in an outer supporting state. And the driving part of the driving part moves to the release track section to drive the supporting assembly to be in an inward contraction state. The increase of the outer supporting volume and the decrease of the inner shrinkage volume of the supporting assembly are within a preset change range, and the supporting assembly can adapt to supporting rings in various size ranges.

Description

Technical Field

[0001] The present application relates to the field of medical device technology, and in particular to a delivery device and an artificial blood vessel system. Background Art

[0002] In the treatment of aortic-related diseases, such as aortic dissection, when replacing the aortic arch blood vessels, the surgeon will be affected by the surgical field of view. In order to ensure the convenience of the surgical operation, the blood circulation of the lower limb organs is generally stopped during the anastomosis operation between the artificial blood vessels and the aortic arch blood vessels. However, as the circulatory arrest time increases, the degree of damage to the patient's organs will also increase.

[0003] For the anastomosis operation between artificial blood vessels and aortic arch blood vessels, different surgeons have different suturing speeds and suturing qualities. If the suturing quality is poor, it is easy to cause anastomotic bleeding. Once anastomotic bleeding occurs, it is necessary to continue to stop the bleeding at the anastomotic bleeding point. On the one hand, the hemostasis process will greatly prolong the patient's extracorporeal blood supply time, and on the other hand, it is also very easy to cause the existing anastomosis to tear, which will cause greater harm to the patient. According to the survey, when a skilled surgeon replaces the aortic arch blood vessel, it also takes 10-15 minutes to anastomose the distal end of the aortic arch blood vessel. In the case of poor suturing quality, if the anastomosis leaks and bleeds, the time for the stitch supplement can sometimes be as long as 30 minutes or more. Therefore, in order to reduce the damage to the patient's organs caused by the operation, this type of operation can generally only be performed by surgeons who are very skilled in suturing techniques and have rich experience.

[0004] At present, the mainstream way to reduce the time of stopping blood circulation in lower limb organs during surgery is to shorten the anastomosis operation time of artificial blood vessels and aortic arch vessels by suturing-free during surgery. In the suture-free operation during surgery, it is generally necessary to implant a support ring that can provide support force inside the aortic arch vessel. For example, the artificial blood vessel is first delivered to the target position of the aortic arch vessel, and then the support ring is delivered between the artificial blood vessel and the aortic arch vessel, and the support ring is fixed by the relevant suture-free structure. However, the aortic arch vessels of different patients have different sizes, so the support rings also need to form more matches in size. Therefore, when the support ring is delivered by a delivery device, the delivery device needs to match more sizes of support rings. Therefore, it is difficult for the same delivery device to form a good match for the inner diameter and processing tolerance of support rings of different sizes, which easily leads to the situation that the support ring is not delivered in place, and the safe and reliable release of the support ring cannot be ensured. Summary of the invention

[0005] Based on this, it is necessary to provide a delivery device and an artificial blood vessel system to address the above-mentioned technical problems.

[0006] The present application provides a conveying device, the conveying device comprising:

[0007] A guide component, wherein the guide component is used to form a guide track;

[0008] A support assembly, the support assembly is arranged at the distal end of the guide component and is used to fit the support ring; wherein the support assembly has an outward supporting state and an inward retracted state, the outward supporting state of the support assembly is used to lock the support ring, and the inward retracted state of the support assembly is used to release the support ring;

[0009] A driving component, wherein the driving component is movably assembled relative to the guide component along the guide track, the driving portion of the driving component is used to cooperate with the driving of the support assembly, the guide track of the guide component includes a locking track section and a releasing track section, the driving portion of the driving component moves to the locking track section of the guide track to drive the support assembly to the outward supporting state, and the driving portion of the driving component moves to the releasing track section of the guide track to drive the support assembly to the retracted state.

[0010] In one embodiment, the support assembly comprises:

[0011] A support sleeve, the support sleeve is used to cover the support ring, and the side wall of the support sleeve is provided with an external support through hole communicating with the inner cavity thereof;

[0012] A supporting element, wherein the supporting element is movably assembled in the inner cavity of the supporting sleeve, and an external supporting terminal is arranged on the supporting element, and the external supporting terminal is movably passed through the external supporting through hole; the driving portion of the driving component is in driving contact with the supporting element, and is used to drive the supporting element to move in the inner cavity of the supporting sleeve, thereby driving the external supporting terminal to extend from the external supporting through hole to the outside of the supporting sleeve, thereby forming the external supporting state.

[0013] In one embodiment, the support assembly comprises:

[0014] An elastic element is arranged in the inner cavity of the support sleeve, and the elastic element is elastically connected to the support element, and is used to elastically drive the support element to move in the inner cavity of the support sleeve, thereby driving the external support terminal to retract from the external support through hole to the inner cavity of the support sleeve, forming the retracted state.

[0015] In one embodiment, a radial track is provided in the inner cavity of the support sleeve, and the support element is radially movably assembled in the inner cavity of the support sleeve along the radial track, driving the external support terminal to movably penetrate in the external support through hole; and / or,

[0016] The distal end of the support sleeve has a guide tip; and / or,

[0017] A sleeve end cover is arranged at the proximal end of the support sleeve, and the outer surface of the sleeve end cover is a smooth transition surface.

[0018] In one embodiment, a limit terminal is provided at the proximal end of the support element, and the limit terminal is used to contact with the support ring to limit the movement of the support ring relative to the support sleeve toward the proximal direction; and / or,

[0019] The number of the supporting elements and the number of the external supporting through holes are at least two, the elastic element is an elastic ring body, and the elastic ring body is sleeved between at least two supporting elements to elastically drive at least two supporting elements to approach each other, driving the external supporting terminal to retract from the external supporting through hole to the inner cavity of the supporting sleeve; and / or,

[0020] The supporting element is provided with a supporting inclined surface, and the driving portion of the driving component is used for slidingly cooperating with the supporting inclined surface of the supporting element.

[0021] In one embodiment, a side wall of the support sleeve is provided with a position-limiting through hole communicating with the inner cavity thereof, and the position-limiting terminal is movably arranged in the position-limiting through hole;

[0022] And / or, a first fixing structure is provided on the supporting element, and the elastic ring body is fixedly connected to the supporting element via the first fixing structure.

[0023] In one embodiment, the guide member is a guide tube; and / or,

[0024] The driving component is a driving pipe having an axially penetrating catheter lumen. The driving pipe is movably sleeved on the outside of the guiding component and moves along the guiding track of the guiding component.

[0025] In one embodiment, the distal end of the driving member constitutes the driving portion of the driving member; and / or,

[0026] The driving part of the driving component is provided with a driving terminal, and the driving terminal has an axially penetrating terminal inner cavity, the terminal inner cavity is connected with the catheter inner cavity, the driving pipe and the driving terminal are movably sleeved on the outside of the guide component, and the driving part is indirectly driven and contacted with the supporting element through the driving terminal.

[0027] In one embodiment, the driving terminal has a driving inclined surface, and the driving inclined surface is used for driving contact with the supporting element.

[0028] In one embodiment, the delivery device comprises:

[0029] An elastic component is disposed in the inner cavity of the supporting sleeve, and is used for elastically contacting the driving component, thereby elastically driving the driving portion of the driving component to move toward the release track section.

[0030] In one of the embodiments, a second fixing structure is provided in the inner cavity of the supporting sleeve, the elastic component is installed in the second fixing structure, and the driving portion of the driving component is in elastic contact with the elastic component.

[0031] In one embodiment, the delivery device comprises:

[0032] A locking assembly is arranged on the driving component, and is used to lock or release the movement of the driving component relative to the guide component.

[0033] In one embodiment, the locking assembly includes:

[0034] A locking base, wherein the locking base is arranged on the driving component;

[0035] A locking element is movably mounted on the locking base, a first locking hole is formed on the guide component, and a second locking hole is formed on the drive component. The locking element is used to penetrate the first locking hole and the second locking hole at the same time to lock the movement of the drive component relative to the guide component.

[0036] The present application provides an artificial blood vessel system, the artificial blood vessel system comprising:

[0037] An artificial blood vessel, which is used for anastomosis with an autologous blood vessel;

[0038] A support ring, used for supporting the artificial blood vessel and the autologous blood vessel;

[0039] The delivery device is used to deliver the support ring into the artificial blood vessel and the autologous blood vessel.

[0040] In the above-mentioned delivery device and artificial blood vessel system, the operator can control the locking and releasing of the support ring by using the movement of the driving component relative to the guide component during the operation of the delivery device. Before the support ring is delivered to the target position in the body, the delivery device is kept locked on the support ring so that the support ring can be delivered to the target position in the body along with the delivery device. When the support ring reaches the target position in the body, the delivery device is controlled to release the support ring. In the process of locking and releasing the support ring, the delivery device adopts a method in which the outer support volume of the support component increases and the inner shrinkage volume decreases. Therefore, when the size of the support ring changes, it is only necessary to adjust the degree of increase in the outer support volume of the support component and the degree of decrease in the inner shrinkage volume. The increase in the outer support volume and the decrease in the inner shrinkage volume of the support component are within a predetermined range of variation. Therefore, the support component can adapt to support rings of various size ranges, and the delivery of multi-size support rings can be achieved using one delivery device. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 An exploded view of a conveying device provided in one embodiment of the present application.

[0042] Figure 2 This is a schematic diagram of the use status of the conveying device provided in one embodiment of the present application.

[0043] Figure 3 A three-dimensional view of a support sleeve provided in one embodiment of the present application.

[0044] Figure 4 A cross-sectional view of a support sleeve provided in one embodiment of the present application.

[0045] Figure 5 A plan view of a support sleeve provided in one embodiment of the present application.

[0046] Figure 6 This is a three-dimensional view of a support element provided in one embodiment of the present application.

[0047] Figure 7 This is a plan view of a supporting element provided in one embodiment of the present application.

[0048] Figure 8 A cross-sectional view of a driving terminal provided in one embodiment of the present application.

[0049] Fig. 9 This is a three-dimensional view of a locking base provided in one embodiment of the present application.

[0050] Fig.10 A cross-sectional view of a locking base provided in one embodiment of the present application.

[0051] Fig.11 It is a three-dimensional view of a locking element provided in one embodiment of the present application.

[0052] Fig.12 A plan view of a locking element provided in one embodiment of the present application.

[0053] Figure Number:

[0054] 100, support ring; 200, artificial blood vessel; 300, autologous blood vessel;

[0055] 1000, guide component; 2000, support component; 3000, drive component; 4000, elastic component; 5000, locking component;

[0056] 1100, holding component; 1000a, guide track;

[0057] 2100, support sleeve; 2200, support element; 2300, elastic element; 2400, radial track; 2500, guide end; 2600, sleeve end cover;

[0058] 2100a, external support through hole; 2100b, position limiting through hole; 2100c, second fixing structure;

[0059] 2200a, external support terminal; 2200b, limit terminal; 2200c, support slope; 2200d, first fixed structure;

[0060] 3100, driving terminal; 3000a, driving inclined plane; 3000b, limiting track;

[0061] 5100, locking base; 5200, locking element; 5000a, first locking hole; 5000b, second locking hole; 5200a, locking terminal. DETAILED DESCRIPTION

[0062] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0063] In the description of the present application, it should be understood that if 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. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0064] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0065] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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 this application can be understood according to the specific circumstances.

[0066] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the 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. The first feature being "below", "below" and "below" the 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.

[0067] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0068] In order to more clearly describe the structure of the delivery device, the term "distal end" is defined herein to mean the end away from the operator during the surgical operation, i.e. Figure 1 and Figure 2 The left side of the figure shows that the "proximal end" refers to the end closer to the operator during the surgical operation, i.e. Figure 1 and Figure 2 Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application. The terms used in this application in the specification are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0069] See also Figure 1 and Figure 2 As shown, a conveying device provided by one embodiment of the present application includes a guide component 1000, a support assembly 2000 and a driving component 3000. The guide component 1000 is used to form a guide track 1000a. The support assembly 2000 is arranged at the far end of the guide component 1000. The support assembly 2000 can be used to set the support ring 100 as a preliminary preparation for conveying the support ring 100. Among them, the support component 2000 has an outward support state and an inward retracted state. The outward support state of the support component 2000 is used to lock the support ring 100, and the inward retracted state of the support component 2000 is used to release the support ring 100. The driving component 3000 is movably assembled relative to the guide component 1000 along the guide track 1000a. The driving part of the driving component 3000 is used to cooperate with the driving of the support component 2000. The guide track 1000a of the guide component 1000 has a locking track section and a releasing track section. The driving part of the driving component 3000 moves to the locking track section to drive the support component 2000 to be in the outward support state, and the driving part of the driving component 3000 moves to the releasing track section to drive the support component 2000 to be in the inward retracted state.

[0070] The outward-supporting state and the inward-retracting state of the support assembly 2000 are relative states during the operation of the support assembly 2000, wherein the outward-supporting state is mainly manifested as at least a part of the structural volume of the support assembly 2000 being relatively expanded to a relatively large state, and correspondingly, the inward-retracting state is mainly manifested as at least a part of the structural volume of the support assembly 2000 being relatively retracted to a relatively small state. When the support assembly 2000 is in the outward-supporting state, the support assembly 2000 can use the expanded larger volume to form an outward support for the support ring 100 from the inside of the support ring 100, and at this time, the support assembly 2000 will apply a supporting force to the support ring 100 from the inside of the support ring 100, and this supporting force will increase the friction between the support assembly 2000 and the support ring 100, and then lock the support ring 100 on the support assembly 2000 through the outward-supporting action.

[0071] When the driving part of the driving component 3000 moves along the guide component 1000 to the locking track section of the guide track 1000a, the driving part of the driving component 3000 will drive the support assembly 2000, and in this case, the support assembly 2000 is driven to be in an outward-supported state. When the driving part of the driving component 3000 moves along the guide component 1000 to the releasing track section of the guide track 1000a, the driving part of the driving component 3000 will also drive the support assembly 2000, and in this case, the support assembly 2000 is driven to be in a retracted state. Therefore, the outward-supported state and the retracted state of the support assembly 2000 can be converted by utilizing the movement of the driving component 3000 relative to the guide component 1000, so that the outward-supported state and the retracted state of the support assembly 2000 can be actively controlled and transformed according to needs.

[0072] The guide track 1000a formed by the guide component 1000 can form a track for the driving component 3000 to move. The track can be a straight track or a curved track, and those skilled in the art can define it according to actual needs. Among them, the locking track section and the releasing track section contained in the guide track 1000a are partial sections of the overall section of the guide track 1000a, and the locking track section and the releasing track section do not overlap in the guide track 1000a. The locking track section and the releasing track section are respectively different sections in the guide track 1000a. When the driving component 3000 moves along the guide track 1000a of the guide component 1000, it can reach the locking track section or the releasing track section during the movement. Therefore, as long as the driving component 3000 moves along the guide track 1000a of the guide component 1000, it can travel back and forth between the locking track section and the releasing track section. For example, taking the guiding part on the guide component 1000 as a reference, the guiding part is controlled to travel back and forth between the locking track section and the releasing track section. Figure 1 and Figure 2As shown, the locking track section is located at the distal end region of the guide track 1000a, i.e. Figure 1 and Figure 2 The release track section is located at the proximal region of the guide track 1000a, i.e. Figure 1 and Figure 2 The guide member 1000 moves toward the distal end so that the support assembly 2000 is in an outwardly supported state, and the guide member 1000 withdraws toward the proximal end so that the support assembly 2000 is in a retracted state.

[0073] Therefore, when the operator manipulates the delivery device, the operator can use the movement of the driving component 3000 relative to the guide component 1000 to control the locking and releasing of the support ring 100. Before the support ring 100 is delivered to the target position in the body, the delivery device is kept locked on the support ring 100, so that the support ring 100 can be delivered to the target position in the body along with the delivery device. When the support ring 100 reaches the target position in the body, the delivery device is controlled to release the support ring 100. In the process of locking and releasing the support ring 100, the delivery device adopts the method of increasing the external support volume of the support component 2000 and decreasing the internal shrinkage volume. Therefore, when the size of the support ring 100 changes, it is only necessary to adjust the increase in the external support volume of the support component 2000 and the decrease in the internal shrinkage volume. The increase in the external support volume and the decrease in the internal shrinkage volume of the support component 2000 are within the predetermined range of variation. Therefore, the support component 2000 can adapt to support rings 100 of various sizes, and the delivery of multi-size support rings 100 can be achieved by using one delivery device.

[0074] The support component 2000 can adopt a variety of structures. For example, the support component 2000 can adopt a mechanical arm structure, an airbag structure, and any other variable volume structure that can expand the external support volume and shrink the internal volume. The expansion of the external support volume and the reduction of the internal support volume of the support component 2000 can be manifested as an increase or decrease in the overall structure, or as an increase or decrease in a partial structure. As long as the support component 2000 can lock the support ring 100 in the external support state and release the lock of the support ring 100 in the internal retracted state (i.e., release the support ring 100), there is no limitation on this.

[0075] See also Figures 1 to 7As shown, in one embodiment, the support assembly 2000 includes a support sleeve 2100 and a support element 2200. The support sleeve 2100 is used to fit the support ring 100. Therefore, the support sleeve 2100 can be a cylindrical or cylindrical structure similar to a cylindrical structure. However, the support sleeve 2100 is not limited to a prismatic cylinder or other irregular cylindrical shapes. There is no limitation on this. The side wall of the support sleeve 2100 is provided with an external support through hole 2100a connected to the inner cavity thereof, the support element 2200 is movably assembled in the inner cavity of the support sleeve 2100, and the support element 2200 is provided with an external support terminal 2200a, which is movably passed through the external support through hole 2100a from the inside to the outside. When the support element 2200 moves in the inner cavity of the support sleeve 2100, the external support terminal 2200a passes through the external support through hole 2100a and is exposed on the outer wall of the support sleeve 2100, which means that the volume of the support component 2000 increases, forming an external support state. Figure 2 As shown, at this time, the outer support terminal 2200a can support and fix the support ring 100 from the inner wall of the support ring 100, thereby forming a locking state.

[0076] The external support terminal 2200a can be made of a plastic material with a certain elasticity, so that the external support terminal 2200a has the ability to deform. When the external support terminal 2200a passes through the external support through hole 2100a and is exposed on the outer wall of the support sleeve 2100, the external support terminal 2200a can form a relative force with the inner wall of the support ring 100. At this time, the deformation ability of the external support terminal 2200a can adapt to the reverse force applied by the support ring 100 to the external support terminal 2200a, and the external support terminal 2200a adapts to the change of the inner diameter of the support ring 100 by deformation.

[0077] The driving cooperation between the driving component 3000 and the supporting assembly 2000 can be carried out in a variety of ways, such as mechanical control or electronic control, which is not limited. For example, the driving component 3000 can be defined with a driving part, and the driving part of the driving component 3000 is used to drive the supporting element 2200 to contact, so that the driving part can drive the supporting element 2200 to move in the inner cavity of the supporting sleeve 2100, and the movement of the supporting element 2200 can drive the external supporting terminal 2200a to extend from the external supporting through hole 2100a to the outside of the supporting sleeve 2100, forming an external supporting state. Those skilled in the art can select a suitable driving cooperation method according to needs, which is not limited.

[0078] The driving portion of the driving component 3000 is driven to contact with the supporting element 2200 to realize the external support state. Accordingly, if the driving portion of the driving component 3000 is not in driving contact with the supporting element 2200, it cannot drive the external support terminal 2200a to extend from the external support through hole 2100a to the outside of the supporting sleeve 2100, thereby maintaining the retracted state. Whether the driving portion is driven to contact with the supporting element 2200 can be achieved by controlling the movement of the driving component 3000, or it can be achieved in other ways. For example, in one embodiment, the supporting assembly 2000 may include an elastic element 2300, and the elastic element 2300 is arranged in the inner cavity of the supporting sleeve 2100. The elastic element 2300 is elastically connected to the supporting element 2200. The elastic force generated by the elastic element 2300 can be used to elastically drive the supporting element 2200 to move in the inner cavity of the supporting sleeve 2100, thereby driving the external support terminal 2200a to retract from the external support through hole 2100a to the inner cavity of the supporting sleeve 2100, forming a retracted state.

[0079] The movement of the support element 2200 in the inner cavity of the support sleeve 2100 is mainly used to drive the outer support terminal 2200a to be movably inserted in the outer support through hole 2100a. Therefore, according to factors such as the position and shape of the outer support through hole 2100a and the position and shape of the outer support terminal 2200a, the support element 2200 can move in the inner cavity of the support sleeve 2100 according to different movement trajectories. In one embodiment, a radial track 2400 is provided in the inner cavity of the support sleeve 2100, and the radial track 2400 is used to define the movement trajectory of the support element 2200. Therefore, the support element 2200 can be radially movably assembled in the inner cavity of the support sleeve 2100 along the radial track 2400, and have expected regular movement in the inner cavity of the support sleeve 2100 along the movement trajectory formed by the radial track 2400, thereby stably driving the outer support terminal 2200a to be movably inserted in the outer support through hole 2100a.

[0080] The distal end of the support sleeve 2100 has a guide end 2500, which can be a conical head or other structure with a guiding function and convenient for shuttling in the blood vessel, for example, to facilitate the introduction of the artificial blood vessel 200. The proximal end of the support sleeve 2100 is provided with a sleeve end cap 2600, the outer surface of which is a smooth transition surface, which facilitates the delivery and withdrawal of the delivery device and avoids interference or jamming with the tissue in the blood vessel.

[0081] See also Figure 6 and Figure 7As shown, in one embodiment, a limiting terminal 2200b is provided at the proximal end of the support element 2200, and the limiting terminal 2200b is used to limit the contact with the support ring 100, and the limiting terminal 2200b is used to limit the movement of the support ring 100 relative to the support sleeve 2100 toward the proximal direction, so as to prevent the support ring 100 from being separated from the support sleeve 2100 from the proximal direction. The limiting terminal 2200b can be exposed from the proximal end of the support sleeve 2100, or the side wall of the support sleeve 2100 is provided with a limiting through hole 2100b connected to its inner cavity, and the limiting terminal 2200b is movably arranged in the limiting through hole 2100b, and then similar to the exposure and retraction of the external support terminal 2200a from the support through hole, the limiting terminal 2200b can be exposed and retracted from the limiting through hole 2100b.

[0082] The number of the support element 2200 and the external support through hole 2100a can be one or more, that is, as long as there is an external support terminal 2200a of the support element 2200 that is movably inserted into the external support through hole 2100a, it means that the support assembly 2000 can be switched between the external support state and the retracted state. In one embodiment, the number of the support element 2200 and the external support through hole 2100a can be set to at least two, for example, the number of both is three, four, etc., and they are distributed along the circumferential direction, so that the external support terminal 2200a of the support element 2200 can evenly support and lock the support ring 100 from the circumferential direction of the support ring 100.

[0083] The elastic element 2300 is an elastic ring body, which is sleeved between at least two supporting elements 2200. For example, when there are multiple supporting elements 2200, the elastic ring body can be sleeved on some of the multiple supporting elements 2200 or on all of the supporting elements 2200. The elastic force generated by the elastic ring is used to elastically drive some of the multiple supporting elements 2200 or all of the supporting elements 2200 to approach each other, that is, drive the multiple supporting elements 2200 to move radially toward the center of the supporting sleeve 2100, drive the external support terminal 2200a to retract from the external support through hole 2100a to the inner cavity of the supporting sleeve 2100, and use the elastic force to keep the support assembly 2000 in a retracted state. A first fixing structure 2200d is provided on the supporting element 2200, and the elastic ring body is fixedly connected to the supporting element 2200 via the first fixing structure 2200d. The first fixing structure 2200d can be a groove structure, a clamping structure, an adhesive structure, etc., which is not limited.

[0084] The support element 2200 has a support slope 2200c, and the support slope 2200c gradually tilts along the radial direction of the support sleeve 2100 toward the inside of the support sleeve 2100 from the proximal end to the distal end. The driving part of the driving component 3000 is used to slide with the support slope 2200c of the support element 2200. Figure 2 As shown, during the movement of the driving portion toward the distal end, the driving portion will gradually slide along the supporting inclined surface 2200c, and then drive the supporting element 2200 to move radially outward with the help of the supporting inclined surface 2200c, so that the external support terminal 2200a extends from the external support through hole 2100a to the outside of the supporting sleeve 2100.

[0085] The guide component 1000 and the driving component 3000 can be in various structures, such as a slender structure that meets the conveying requirements. Figure 1 As shown, the guide component 1000 can be a guide tube or a guide rod. A gripping component 1100 can be provided at the proximal end of the guide component 1000 for the operator to hold, such as a handle, etc. The gripping component 1100 is, for example, an injection molded part, and the gripping component 1100 can be connected to the guide component 1000 by means of threading, gluing, injection molding, etc. The driving component 3000 is a driving tube, which has an axially penetrating catheter lumen. The driving tube is movably sleeved on the outside of the guide component 1000 and moves along the guide track 1000a of the guide component 1000. At this time, the outer diameter of the guide tube and the inner diameter of the driving tube can be used as a clearance fit. Therefore, the guide track 1000a formed on the guide component 1000 can be mainly composed of the tube body itself or the rod body itself. As long as the driving pipe is mounted on the guide component 1000, it can move along the guide component 1000, or a separate guide track 1000a such as a guide groove or a guide protrusion can be set on the guide component 1000, and there is no limitation on this.

[0086] Continue reading Figure 1 As shown, a limiting track 3000b is provided on the driving component 3000, and the limiting track 3000b is used to form a match with the guide track 1000a of the guide component 1000, which not only makes it possible for the driving component 3000 to move only along the guide track 1000a of the guide component 1000, but also, when the guide component 1000 is used as a guide pipe and the driving component 3000 is used as a driving pipe, the driving pipe is movably sleeved on the outside of the guide pipe, and the limiting track 3000b can also be used to form a limiting guide matching relationship with the guide track 1000a, so as to prevent the driving pipe from rotating in the circumferential direction relative to the guide pipe, thereby ensuring the stability of assembly and operation between the driving pipe and the guide pipe. For example, the guide track 1000a and the limiting track 3000b are respectively grooves and protrusions that match each other, and this is not limited.

[0087] In one embodiment, the distal end of the driving component 3000 constitutes the driving part of the driving component 3000, that is, the distal end of the driving component 3000 is directly driven and matched with the supporting element 2200. Alternatively, the driving part of the driving component 3000 is provided with a driving terminal 3100, and the driving terminal 3100 and the driving component 3000 can be connected by means of thread, adhesive, injection molding, etc. The driving terminal 3100 has an axially through terminal inner cavity, the terminal inner cavity is connected with the catheter inner cavity, the driving pipe and the driving terminal 3100 are movably mounted on the outside of the guide component 1000, and the driving part is indirectly driven and contacted with the supporting element 2200 through the driving terminal 3100.

[0088] See also Figure 8 As shown, the driving terminal 3100 has a driving bevel 3000a, and the driving bevel 3000a gradually tilts toward the inside of the driving terminal 3100 along the radial direction of the driving terminal 3100 from the proximal end to the distal end, and the driving bevel 3000a is used to drive the contact with the support element 2200. When the driving terminal 3100 moves toward the distal end with the driving component 3000, the driving terminal 3100 will slide with the support element 2200 using the driving bevel 3000a, for example, slide with the support bevel 2200c of the support element 2200, and then drive the support element 2200 to move radially outward with the help of the driving bevel 3000a, so that the external support terminal 2200a extends from the external support through hole 2100a to the outside of the support sleeve 2100.

[0089] In one embodiment, the conveying device includes an elastic component 4000, which is disposed in the inner cavity of the support sleeve 2100. The elastic force generated by the elastic component 4000 can be used to elastically contact the driving component 3000, so that the driving component 3000 generates an elastic tendency to move toward the proximal direction, and then elastically drives the driving part of the driving component 3000 to move toward the proximal end to the release track section, switching the support assembly 2000 from the outward support state to the inward retracted state. In one embodiment, a second fixed structure 2100c is disposed in the inner cavity of the support sleeve 2100, and the elastic component 4000 is installed in the second fixed structure 2100c. The driving part of the driving component 3000 is in elastic contact with the elastic component 4000. The second fixed structure 2100c can be a groove structure, a clamping structure, an adhesive structure, etc., which is not limited.

[0090] Continue reading Figure 1 and Figure 2As shown, in one embodiment, the conveying device includes a locking assembly 5000, which can be selectively arranged on the guide component 1000 or the driving component 3000 according to the needs and the specific structural form. The locking assembly 5000 is used to lock or release the movement of the driving component 3000 relative to the guide component 1000. The locking of the driving component 3000 by the locking assembly 5000 is manifested as the driving component 3000 cannot move relative to the guide component 1000, and the release of the driving component 3000 by the locking assembly 5000 is manifested as the driving component 3000 can move relative to the guide component 1000. Figures 9 to 12 As shown, in one embodiment, the locking assembly 5000 includes a locking base 5100 and a locking element 5200. The locking base 5100 can be selectively arranged on the guide component 1000 or the driving component 3000 according to the requirements. For example, when the locking base 5100 is arranged on the driving component 3000, the locking base 5100 can move with the driving component 3000. The locking element 5200 is movably assembled on the locking base 5100. The guide component 1000 is provided with a first locking hole 5000a. The driving component 3000 A second locking hole 5000b is opened on it, and the locking element 5200 is used to be simultaneously penetrated in the first locking hole 5000a and the second locking hole 5000b. When the locking element 5200 is simultaneously penetrated in the first locking hole 5000a and the second locking hole 5000b, the movement of the driving component 3000 relative to the guide component 1000 can be locked. When the locking element 5200 is not simultaneously penetrated in the first locking hole 5000a and the second locking hole 5000b, the movement of the driving component 3000 relative to the guide component 1000 can be released.

[0091] The hole types of the first locking hole 5000a and the second locking hole 5000b can be round holes, square holes, etc., and there is no limitation on this. A locking terminal 5200a can be provided on the locking element 5200, and the locking terminal 5200a is penetrated into the first locking hole 5000a and the second locking hole 5000b. The locking terminal 5200a can be a column or a protrusion, etc., which can be adapted to the hole types of the first locking hole 5000a and the second locking hole 5000b, and then conveniently penetrated into the first locking hole 5000a and the second locking hole 5000b, so as to realize relative locking of the driving component 3000 and the guide component 1000.

[0092] The locking base 5100 can be an injection molded part, and the locking base 5100 can be fixed on the guide component 1000 by means of thread, gluing, injection molding, etc. The locking base 5100 can be provided with an axial hole, and the locking element 5200 is provided with a rotating shaft, and the locking element 5200 is rotatably assembled on the locking base 5100 through the axial hole and the rotating shaft. An elastic member such as a compression spring can also be provided between the locking element 5200 and the locking base 5100, wherein the elastic force of the elastic member is mainly applied to the other end of the locking element 5200 relative to the locking terminal 5200a, and the elastic force generated by the compression spring drives the locking terminal 5200a of the locking element 5200 to maintain the state of being inserted into the first locking hole 5000a and the second locking hole 5000b, so as to maintain the relative locking of the driving component 3000 and the guide component 1000. When the operator presses the other end of the locking element 5200 relative to the locking terminal 5200a, the elastic force generated by the compression spring can be overcome, so that the locking terminal 5200a of the locking element 5200 can be withdrawn from the first locking hole 5000a and the second locking hole 5000b, thereby releasing the relative locking of the driving component 3000 and the guide component 1000.

[0093] Continue reading Figure 2 As shown, the present application also provides an artificial blood vessel 200 system, which includes an artificial blood vessel 200, a support ring 100 and a conveying device, wherein the artificial blood vessel 200 is used to anastomose with an autologous blood vessel 300, the support ring 100 is used to support the artificial blood vessel 200 and the autologous blood vessel 300, and the conveying device is used to convey the support ring 100 to the artificial blood vessel 200 and the autologous blood vessel 300. Among them, the artificial blood vessel 200 is mainly formed by a port being sleeved with the port of the autologous blood vessel 300, so an overlapping pipe section will be formed between the ports of the artificial blood vessel 200 and the autologous blood vessel 300, and the support ring 100 is supported by the overlapping pipe section formed between the artificial blood vessel 200 and the autologous blood vessel 300 by the conveying device.

[0094] Continue reading Figure 1 and Figure 2As shown, the support ring 100 is sleeved on the outside of the support sleeve 2100, and the operator controls the driving component 3000 to move toward the distal end, and the driving component 3000 will make driving contact with the support element 2200, pushing the support element 2200 to gradually move radially outward. When the driving component 3000 moves to a certain position, the external support terminal 2200a on the support element 2200 will pass through the external support through hole 2100a and be exposed on the outer wall of the support sleeve 2100. The external support terminal 2200a squeezes the inside of the support ring 100, so that the support ring 100 cannot be separated from the support sleeve 2100 without external force, and the limit terminal 2200b on the support element 2200 will also block the end of the support ring 100, so that the support ring 100 cannot move toward the proximal end. At this time, the locking assembly can be used to make the driving component 3000 and the guide component 100 stuck to each other. Among them, the elastic element 2300 will also continue to generate corresponding elastic force, which can make the external support terminal 2200a have a tendency to retract from the external support through hole 2100a to the inner cavity of the support sleeve 2100, forming an overall force balance with the driving force applied by the driving component 3000, and maintaining a relatively stable state.

[0095] The support ring 100 is delivered to the target position in the body by using the delivery device. After the support ring 100 is determined to be in place, the driving component 3000 and the guide component 1000 are unlocked by using the locking assembly. The driving component 3000 moves toward the proximal end to release the driving contact with the support element 2200. The support element 2200 can move radially inward under the action of the elastic force, driving the external support terminal 2200a to retract from the external support through hole 2100a to the inner cavity of the support sleeve 2100, and releasing the squeezing force on the support ring 100. The delivery device can be naturally withdrawn from the target position in the body, leaving the support ring 100 at the target position in the body, and realizing the safe and controllable release of the support ring 100. If it is necessary to remove the support ring 100 from the target position in the body, the delivery device in the retracted state can be delivered to the target position in the body, so that the support sleeve 2100 extends into the interior of the support ring 100, locks the support ring 100, and withdraws the delivery device to remove the support ring 100 from the body.

[0096] Since the specific structure, functional principle and technical effects of the conveying device shown have been described in detail in the previous text, they will not be repeated here. Any technical content related to the conveying device can refer to the previous records.

[0097] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0098] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A conveying device, characterized in that: The conveying device comprises: A guide component, wherein the guide component is used to form a guide track; A support assembly, the support assembly is arranged at the distal end of the guide component and is used to fit the support ring; wherein the support assembly has an outward supporting state and an inward retracted state, the outward supporting state of the support assembly is used to lock the support ring, and the inward retracted state of the support assembly is used to release the support ring; A driving component, wherein the driving component is movably assembled relative to the guide component along the guide track, the driving portion of the driving component is used to cooperate with the driving of the support assembly, the guide track of the guide component includes a locking track section and a releasing track section, the driving portion of the driving component moves to the locking track section of the guide track to drive the support assembly to the outward supporting state, and the driving portion of the driving component moves to the releasing track section of the guide track to drive the support assembly to the retracted state.

2. The conveying device according to claim 1, characterized in that The support assembly comprises: A support sleeve, the support sleeve is used to cover the support ring, and the side wall of the support sleeve is provided with an external support through hole communicating with the inner cavity thereof; A supporting element, wherein the supporting element is movably assembled in the inner cavity of the supporting sleeve, and an external supporting terminal is arranged on the supporting element, and the external supporting terminal is movably passed through the external supporting through hole; the driving portion of the driving component is in driving contact with the supporting element, and is used to drive the supporting element to move in the inner cavity of the supporting sleeve, thereby driving the external supporting terminal to extend from the external supporting through hole to the outside of the supporting sleeve, thereby forming the external supporting state.

3. The conveying device according to claim 2, characterized in that: The support assembly comprises: An elastic element is arranged in the inner cavity of the support sleeve, and the elastic element is elastically connected to the support element, and is used to elastically drive the support element to move in the inner cavity of the support sleeve, thereby driving the external support terminal to retract from the external support through hole to the inner cavity of the support sleeve, forming the retracted state.

4. The conveying device according to claim 3, characterized in that: A radial track is provided in the inner cavity of the support sleeve, and the support element is radially movable and assembled in the inner cavity of the support sleeve along the radial track, driving the outer support terminal to be movable and penetrated in the outer support through hole; and / or, The distal end of the support sleeve has a guide tip; and / or, A sleeve end cover is arranged at the proximal end of the support sleeve, and the outer surface of the sleeve end cover is a smooth transition surface.

5. The conveying device according to claim 4, characterized in that: A limit terminal is disposed at the proximal end of the support element, and the limit terminal is used to contact with the support ring to limit the movement of the support ring relative to the support sleeve toward the proximal direction; and / or, The number of the supporting elements and the number of the external supporting through holes are at least two, the elastic element is an elastic ring body, and the elastic ring body is sleeved between at least two supporting elements, and is used to elastically drive at least two supporting elements to approach each other, and drive the external supporting terminal to retract from the external supporting through hole to the inner cavity of the supporting sleeve; and / or, The supporting element is provided with a supporting inclined surface, and the driving portion of the driving component is used for slidingly cooperating with the supporting inclined surface of the supporting element.

6. The conveying device according to claim 5, characterized in that The side wall of the support sleeve is provided with a position limiting through hole communicating with the inner cavity thereof, and the position limiting terminal is movably arranged through the position limiting through hole; And / or, a first fixing structure is provided on the supporting element, and the elastic ring body is fixedly connected to the supporting element via the first fixing structure.

7. The conveying device according to claim 2, characterized in that: The guide component is a guide pipe; and / or, The driving component is a driving pipe having an axially penetrating catheter lumen. The driving pipe is movably sleeved on the outside of the guiding component and moves along the guiding track of the guiding component.

8. The conveying device according to claim 7, characterized in that The distal end of the driving member constitutes a driving portion of the driving member; and / or, The driving part of the driving component is provided with a driving terminal, and the driving terminal has an axially penetrating terminal inner cavity, the terminal inner cavity is connected with the catheter inner cavity, the driving pipe and the driving terminal are movably sleeved on the outside of the guide component, and the driving part is indirectly driven and contacted with the supporting element through the driving terminal.

9. The conveying device according to claim 8, characterized in that The driving terminal is provided with a driving inclined surface, and the driving inclined surface is used for driving contact with the supporting element.

10. The conveying device according to claim 2, characterized in that: The conveying device comprises: An elastic component is disposed in the inner cavity of the supporting sleeve, and is used for elastically contacting the driving component, thereby elastically driving the driving portion of the driving component to move toward the release track section.

11. The conveying device according to claim 10, characterized in that A second fixing structure is arranged in the inner cavity of the supporting sleeve, the elastic component is installed in the second fixing structure, and the driving part of the driving component is in elastic contact with the elastic component.

12. The conveying device according to claim 1, characterized in that The conveying device comprises: A locking assembly is arranged on the driving component, and is used to lock or release the movement of the driving component relative to the guide component.

13. The conveying device according to claim 12, characterized in that: The locking assembly comprises: A locking base, wherein the locking base is arranged on the driving component; A locking element is movably mounted on the locking base, a first locking hole is formed on the guide component, and a second locking hole is formed on the drive component. The locking element is used to penetrate the first locking hole and the second locking hole at the same time to lock the movement of the drive component relative to the guide component.

14. An artificial vascular system, characterized in that: The artificial vascular system comprises: An artificial blood vessel, which is used for anastomosis with an autologous blood vessel; A support ring, used for supporting the artificial blood vessel and the autologous blood vessel; The delivery device according to any one of claims 1 to 13, wherein the delivery device is used to deliver the support ring into the artificial blood vessel and the autologous blood vessel.

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