A conveying system

Abstract

The present invention belongs to the field of medical device technology, and specifically relates to a delivery system, including a sheath tube and a sealing device connected to the sheath tube, the sealing device including a sealing end connected to the sheath tube and a sealing mechanism provided on the sealing end head; the sealing mechanism including a rotating part and a sealing ring, the rotating part rotatably connected to the sealing end head, the sealing ring including a fixed end, a rotating end and a sealing part located between the fixed end and the rotating end, the fixed end being fixedly connected to the sealing end head, and the rotating end being fixedly connected to the rotating part; the rotating part can drive the sealing ring to rotate, so that the opening of the sealing part shrinks. The present application drives the sealing ring to rotate by the rotating part, so that the opening of the sealing part shrinks from the periphery to the center. Therefore, compared with the existing sealing gasket, after the interventional instrument is inserted, there is no cracking phenomenon caused by the incision being pushed open, and the sealing part can completely fit the interventional instrument during the shrinkage process to achieve sealing of the interventional instrument and avoid the occurrence of bleeding.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular relates to a delivery system. Background Art

[0002] Currently, medical sheaths are widely used in minimally invasive interventional diagnostic and therapeutic procedures, for clinical operations such as establishing access channels, delivering and retrieving interventional instruments, administering drugs, and removing body fluids. The sealing properties of sheaths are particularly important in minimally invasive interventional diagnostic and therapeutic procedures, minimizing bleeding that can lead to fainting and other problems in patients.

[0003] The existing sheath sealing structure is basically a sealing gasket. The sealing method using the sealing gasket is usually to cut a cross or a rice-shaped incision on the sealing gasket. During the insertion of the instrument, the incision on the sealing gasket is pushed open, so that the instrument can be inserted into the sheath. Figure 12 As shown, although the existing sealing gasket has a simple structure, the incision of the sealing gasket will be pushed open during the insertion of the instrument, and it is difficult to avoid bleeding at the cracked position of the incision.

[0004] Therefore, a new technical means is needed to solve the above-mentioned problems of the prior art. Summary of the Invention

[0005] The purpose of the present invention is to at least solve the problem that the cracked portion of the existing sheath sealing structure is prone to bleeding during the insertion of an interventional instrument.

[0006] The present invention proposes a conveying system, comprising a sheath tube and a sealing device connected to the sheath tube, wherein the sealing device comprises a sealing end head connected to the sheath tube and a sealing mechanism arranged on the sealing end head; the sealing mechanism comprises a rotating part and a sealing ring, the rotating part is rotatably connected to the sealing end head, the sealing ring comprises a fixed end, a rotating end and a sealing part located between the fixed end and the rotating end, the fixed end is fixedly connected to the sealing end head, and the rotating end is fixedly connected to the rotating part; the rotating part can drive the sealing ring to rotate, so that the opening of the sealing part shrinks.

[0007] The conveying system in the present invention drives the sealing ring to rotate through the rotating part, so that the opening of the sealing part shrinks from the periphery to the center. Therefore, compared with the existing sealing gasket, after the interventional instrument is inserted, there is no cracking caused by the incision. The sealing part can completely fit the interventional instrument during the shrinkage process to achieve sealing of the interventional instrument.

[0008] In addition, the conveying system according to the present invention may also have the following additional technical features:

[0009] In some embodiments of the present invention, an elastic member is provided between the sealing end and the rotating part, and the elastic member is used to drive the rotating part to rotate relative to the sheath tube, so as to drive the sealing ring to twist with the axis of the sheath tube as the rotation center, so that the opening of the sealing part shrinks toward the rotation center.

[0010] In some embodiments of the present invention, the sealing end is further provided with an outer cover and a linkage assembly connected to the outer cover, and the linkage assembly is used to drive the rotating part to rotate when the interventional instrument penetrates the sealing mechanism, so that the opening of the sealing part opens in a direction away from the rotation center.

[0011] In some embodiments of the present invention, the outer cover and the sealing end head are fixed by a snap assembly; an inner ring fixing piece is provided on the inner side of the sealing end head, and the fixed end is fixedly connected between the inner ring fixing piece and the sealing end head.

[0012] In some embodiments of the present invention, an assembly hole is provided in the middle of the rotating part, the assembly hole is coaxially arranged with the outer cover, an assembly part is provided in the middle of the outer cover and is plugged into the assembly hole, and the linkage component is provided between the assembly part and the rotating part; the linkage component includes a steering slide, a guide rod and a guide hole, the steering slide is provided on the rotating part, and the steering slide is connected to the assembly hole; the guide hole is provided on the assembly part, the guide hole is provided along the radial direction of the outer cover, the guide rod is slidably connected to the guide hole, and one end of the guide rod abuts against the bottom of the steering slide, and the bottom of the steering slide is arc-shaped.

[0013] In some embodiments of the present invention, a plurality of linkage components are provided on the sealing end head, a plug hole is provided in the middle of the assembly portion, the plug hole is coaxially arranged with the outer cover, one end of the plurality of guide rods is respectively abutted against the corresponding plurality of steering grooves, and the other ends of the plurality of guide rods are respectively located in the plug hole, and the guide rod is provided with a guide portion at one end thereof provided inside the plug hole, and the guide portion is used to drive the guide rod to slide along the guide hole toward the bottom of the steering groove when the interventional instrument penetrates the sealing mechanism.

[0014] In some embodiments of the present invention, when the guide rod moves radially in a direction away from the center, the guide rod drives the rotating part to rotate in a direction opposite to the elastic force of the elastic member through the steering slot.

[0015] In some embodiments of the present invention, the guide portion is configured as a conical structure, or the guide portion is configured as an inclined structure arranged toward the outside of the outer cover; a pressure ring is provided in the plug-in hole, and the opening size of the pressure ring gradually decreases from the outside to the inside.

[0016] In some embodiments of the present invention, the rotating part includes a knob fixing part and an outer ring fixing part, the knob fixing part is sleeved on the outside of the outer ring fixing part, and the rotating end is fixedly connected between the knob fixing part and the outer ring fixing part; the assembly hole and the steering groove are both provided on the outer ring fixing part.

[0017] In some embodiments of the present invention, a limiting groove is provided on the sealing end head, the limiting groove is arranged along the circumference of the sealing end head, and a slider adapted to the limiting groove is provided on the outer ring fixing member. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the overall structure of the conveying system in Example 1 of the present invention;

[0019] Figure 2 This is a front view of the conveying system in Example 1 of the present invention;

[0020] Figure 3 In the first embodiment of the present invention Figure 2 Cross-section at AA;

[0021] Figure 4 In the first embodiment of the present invention Figure 2 Cross-section at the middle BB;

[0022] Figure 5 In the first embodiment of the present invention Figure 2 Cross-section at CC;

[0023] Figure 6 This is an assembly diagram of the bending adjustment assembly in Example 1 of the present invention;

[0024] Figure 7 This is an assembly diagram of the direction adjustment mechanism in Example 1 of the present invention;

[0025] Figure 8 Schematic diagram of the structure of the guide member in the first embodiment of the present invention;

[0026] Figure 9 Schematic diagram of the structure of the curved track in the first embodiment of the present invention;

[0027] Figure 10 1 is a schematic structural diagram of a bending slider in a first embodiment of the present invention;

[0028] Figure 11Schematic diagram of the structure of the bending knob in the first embodiment of the present invention;

[0029] Figure 12 It is a structural diagram of a sealing gasket in the prior art;

[0030] Figure 13 Schematic diagram of the overall structure of the sealing structure in the second embodiment of the present invention;

[0031] Figure 14 This is a schematic diagram of the assembly structure of the outer cover in the second embodiment of the present invention;

[0032] Figure 15 This is an exploded view of the sealing structure in the second embodiment of the present invention;

[0033] Figure 16 Schematic diagram of the assembly structure of the elastic member in the second embodiment of the present invention;

[0034] Figure 17 This is a cross-sectional view of the sealing structure when the sealing portion is locked in the second embodiment of the present invention;

[0035] Figure 18 Schematic diagram of the linkage assembly when the sealing portion is locked in embodiment 2 of the present invention;

[0036] Figure 19 This is a cross-sectional view of the sealing structure when the sealing portion is opened in the second embodiment of the present invention;

[0037] Figure 20 is a schematic diagram of the linkage assembly when the sealing portion is opened in the second embodiment of the present invention;

[0038] Figure 21 Schematic diagram of the structure of the sealing end head in the second embodiment of the present invention;

[0039] Figure 22 Schematic diagram of the structure of the outer ring fixing member in the second embodiment of the present invention;

[0040] Figure 23 This is a schematic structural diagram of a knob fixing member in a second embodiment of the present invention;

[0041] Figure 24 This is a front view of the knob fixing member in the second embodiment of the present invention;

[0042] Figure 25 is a schematic structural diagram of the outer cover in the second embodiment of the present invention;

[0043] Figure 26 It is a cross-sectional view of the outer cover in the second embodiment of the present invention.

[0044] Reference numerals

[0045] 10. Conveying system; 20. Sealing device; 100. Sheath; 101. Connecting cavity; 102. Assembly platform; 110. Sealing end; 111. End groove; 112. Driving groove; 113. Inner ring fixing member; 114. Sealing cavity; 115. Fixing groove; 116. Limiting slide groove; 120. Sealing mechanism; 200. Handle body; 210. Grip; 220. Proximal housing; 230. Distal housing; 300. Bending mechanism; 310, bending knob; 311, internal thread; 320, bending assembly; 321, bending track; 322, bending slider; 323, external thread; 324, abutment portion; 325, connecting hole; 330, guide member; 331, guide groove; 332, shaft hole; 333, guide block; 340, driving member; 350, proximal end cap; 351, proximal slot; 360, distal end cap; 362, distal slot; 400, direction adjustment mechanism; 410, control assembly; 411, adjustment shaft; 412, shaft; 413, protrusion; 414, lock key; 415, adjustment knob; 416, keyway; 417, main cavity; 420, locking assembly; 421, locking slider; 422, positioning groove; 423, locking groove; 500, rotating part; 510, elastic member; 520, knob fixing member; 521, driving block; 522, connecting groove; 523, assembly hole; 530, Outer ring fixing part; 531, slider; 532, connecting block; 600, sealing ring; 610, fixed end; 620, rotating end; 630, sealing part; 700, outer cover; 710, assembly part; 711, plug hole; 712, pressure ring; 720, snap assembly; 800, linkage assembly; 810, steering slide; 811, slide bottom wall; 812, slide side wall; 820, guide rod; 821, guide part; 830, guide hole. DETAILED DESCRIPTION

[0046] The following describes exemplary embodiments of the present application in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Instead, these embodiments are provided to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0047] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "a," "an," and "the" as used herein may also be meant to include plural forms. Although the terms first, second, third, etc. may be used herein to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may only be used to distinguish one element, component, region, layer, or section from another region, layer, or section.

[0048] For ease of description, spatially relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "below," "above," and the like. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.

[0049] For ease of description, the following description uses the terms "proximal" and "distal", where "proximal" refers to the end close to the operator and "distal" refers to the end away from the operator. The phrase "axial direction" should be understood in this patent to mean the direction in which the interventional element is pushed in and out, and the direction perpendicular to the "axial direction" is defined as the "radial direction".

[0050] Embodiment 1: Embodiment 1 of the present invention provides a conveying system 10, wherein, Figures 1 to 3 As shown, the handle body 200 includes a sheath tube 100 connected to the handle body 200. The handle body 200 is provided with a bending mechanism 300 and a direction adjustment mechanism 400. The bending mechanism 300 includes a bending knob 310 and a plurality of bending components 320. The plurality of bending components 320 can be selectively connected to the bending knob 310, so that the bending knob 310 can selectively control one of the plurality of bending components 320. The direction adjustment mechanism 400 is used to selectively control one of the plurality of bending components 320 to be connected to or separated from the bending knob 310.

[0051] The above-described technical solution of the present application enables multi-directional bending of the sheath 100 by providing multiple bending adjustment assemblies 320. Furthermore, by providing a direction adjustment mechanism 400 on the handle body 200, independent bending in each direction is achieved, thereby combining multiple angles for three-dimensional bending, thereby improving surgical efficiency. Compared with the prior art, if the sheath bending direction is misaligned, there is no need to rotate the sheath, thus avoiding secondary damage caused by sheath rotation within the blood vessel.

[0052] Combine Figure 4As shown, multiple bending adjustment assemblies 320 are circumferentially spaced within the bending knob 310. The bending adjustment assemblies 320 include a bending adjustment track 321 and a bending adjustment slider 322 slidably connected to the bending adjustment track 321. The bending adjustment track 321 is arranged axially along the bending knob 310. The bending adjustment slider 322 is connected to the bending knob 310. A bending adjustment wire (not shown) is connected between the bending adjustment slider 322 and the sheath tube 100. One end of the bending adjustment wire is connected to the bending adjustment slider 322, and the other end of the bending adjustment wire is connected to the bending adjustment section (not shown) at the distal end of the sheath tube 100. The bending adjustment slider 322 can be connected to or separated from the bending adjustment knob 310 under the action of the direction adjustment mechanism 400.

[0053] When the bending track 321 is raised by the direction adjustment mechanism 400, the bending slider 322 is connected to the bending knob 310. By operating the bending knob 310, the bending slider 322 slides on the bending track 321. The bending slider 322 is provided with a connection hole 325, and the bending wire is fixedly connected to the connection hole 325 of the bending slider 322. When the bending slider 322 moves along the bending track 321, it can drive the bending wire to move, thereby pulling the bending section at the distal end of the sheath tube 100, causing the distal end of the sheath tube 100 to bend under force, thereby realizing the bending function of the sheath tube 100.

[0054] In this embodiment, combined with Figure 10 and Figure 11 As shown, the bending knob 310 is cylindrical, with an internal thread 311 provided on its inner wall. The bending slider 322 is provided with an external thread 323. When the bending slider 322 is connected to the bending knob 310, the internal thread 311 engages with the external thread 323. When the bending knob 310 is rotated, the bending knob 310, through the threaded connection, drives the bending slider 322 to move linearly along the bending track 321, thereby driving the bending wire to move, thereby achieving the bending function.

[0055] like Figures 3 to 6 As shown, the bending mechanism 300 further includes a guide member 330 disposed within the bending knob 310. The guide member 330 is disposed along the axial direction of the bending knob 310. A guide groove 331 is axially provided on the guide member 330. A bending track 321 is disposed within the guide groove 331. The bending track 321 is slidably connected to the guide groove 331 along the radial direction of the bending knob 310. In other words, the bending track 321 can slide within the guide groove 331 along the radial direction of the bending knob 310 to threadably connect the bending slider 322 to the bending knob 310 or to separate the bending slider 322 from the bending knob 310.

[0056] A driving member 340 is provided between the bending adjustment track 321 and the guide groove 331. The driving member 340 is used to drive the bending adjustment track 321 to slide toward the bottom of the guide groove 331 so that the bending adjustment slider 322 is separated from the bending adjustment knob 310. Therefore, when there is no need to bend the sheath tube 100, in a natural state, the bending adjustment track 321 is driven away from the bending adjustment knob 310 by the elastic force of the driving member 340, so that the bending adjustment slider 322 is separated from the bending adjustment knob 310. Then, when the bending adjustment knob 310 is rotated, the sheath tube 100 will not be bent, which can effectively avoid accidental touch.

[0057] The direction adjustment mechanism is used to drive the bending rail 321 to slide away from the bottom of the guide groove 331, so that the bending slider 322 is connected to the bending knob 310. The driving member 340 is a spring.

[0058] As described above, when the direction adjustment mechanism does not drive the bending adjustment track 321 to slide away from the bottom of the guide groove 331, the bending adjustment track 321, driven by the driving member 340, disengages the bending adjustment slider 322 from the bending adjustment knob 310. At this time, rotating the bending adjustment knob 310 cannot drive the bending adjustment slider 322 to move. When the direction adjustment mechanism selectively drives one of the multiple bending adjustment assemblies 320 to connect to the bending adjustment knob 310, the sheath tube 100 can be bent by rotating the bending adjustment knob 310.

[0059] In other embodiments, the driving member 340 may also be an elastic structural member such as a rubber gasket. Any driving member 340 that can drive the bending rail 321 to slide toward the bottom of the guide groove 331 is within the protection scope of this application.

[0060] In this embodiment, if Figures 5 to 7As shown, the steering mechanism includes a control component 410 and a locking component 420. An axial hole 332 is coaxially provided in the middle of the guide member 330. The control component 410 includes a steering shaft 411 and a steering knob 415. The steering shaft 411 passes through the axial hole 332. The steering knob 415 is coaxially provided with the steering shaft 411. The steering knob 415 is provided at the proximal end of the bending mechanism 300. The steering shaft 411 can be driven to rotate by rotating the steering knob 415. The steering shaft 411 includes a shaft 412 and a protrusion 413. The protrusion 413 is axially disposed on the shaft 412 and is configured to selectively abut against the plurality of bending rails 321. When the steering shaft 411 is rotated so that the protrusion 413 abuts against one of the plurality of bending rails 321, the protrusion 413 can drive the bending rail 321 to overcome the elastic force of the driving member 340, causing it to slide radially away from the shaft 412, thereby connecting the bending slider 322 to the bending knob 310. When the bending slider 322 is threadedly connected to the bending knob 310, rotating the bending knob 310 can drive the bending slider 322 to slide along the bending rail 321, thereby controlling the bending wire connected to the bending slider 322 to pull the sheath tube 100, thereby bending the sheath tube 100.

[0061] Combine Figure 9 As shown, the bending adjustment track 321 is provided with an abutment portion 324, which is arranged toward the shaft 412. The bending adjustment track 321 is adapted to the protrusion 413 via the abutment portion 324. In a natural state, that is, when the bending adjustment track 321 is driven by the driving member 340 and is located on the side close to the shaft 412, the abutment portion 324 passes through the guide member 330 and its end is located in the shaft hole 332, thereby being adapted to the protrusion 413. During the rotation of the protrusion 413, the bending adjustment track 321 is driven to move via the abutment portion 324.

[0062] The end of the abutment portion 324 is set to be arc-shaped, so that during the rotation of the protrusion 413, the contact with the abutment portion 324 can be smoother, making the movement process of the protrusion 413 and the abutment portion 324 smoother, and can reduce the friction generated during the contact process, reducing the force required by the doctor to operate the bending adjustment knob 310 to rotate.

[0063] The bending adjustment assembly 320 further includes a proximal end cap 350 and a distal end cap 360 respectively provided at both ends of the bending adjustment assembly 320. The guide member 330 is fixed between the proximal end cap 350 and the distal end cap 360. The bending adjustment knob 310 is rotatably connected to the proximal end cap 350 and the distal end cap 360. The proximal end cap 350 is provided with a proximal slot 351, and the distal end cap 360 is provided with a distal slot 362. The guide member 330 is fixed between the proximal slot 351 and the distal slot 362. Figure 1The present application fixes the bending adjustment assembly 320 by using the proximal end cap 350 and the distal end cap 360, making the assembly and disassembly of the bending adjustment assembly 320 more convenient, thereby improving production efficiency and reducing maintenance difficulty.

[0064] Among them, combined Figures 6 to 8 As shown, the guide member 330 includes a plurality of circumferentially spaced guide blocks 333. The number of guide blocks 333 is the same as the number of the bending adjustment mechanism 300. The two ends of each guide block 333 are respectively engaged with the proximal engaging groove 351 and the distal engaging groove 362. Adjacent guide blocks 333 form a guide groove 331. The bending adjustment track 321 is disposed between two adjacent guide blocks 333.

[0065] In this embodiment, the guide member 330 includes four guide blocks 333 arranged at 90 degrees along the circumferential direction, and four bending adjustment mechanisms 300 respectively arranged between two adjacent guide blocks 333, so that it can realize unidirectional bending of the sheath 100 in four separate directions, or realize three-dimensional bending in space by multiple manipulations of different bending adjustment components 320.

[0066] In other embodiments, two or three groups of bending components 320 may be provided in the bending knob 310 to achieve bidirectional or tridirectional bending of the sheath 100. The number of bending components 320 is not limited in this application and may be selected according to actual needs.

[0067] The locking assembly 420 includes a locking slider 421 arranged on the proximal end cover 350 and a positioning groove 422 arranged on the adjustment knob 415. The locking slider 421 is axially slidably connected to the proximal end cover 350, and the adjustment knob 415 is arranged on the proximal side of the proximal end cover 350. The locking slider 421 is plugged into the positioning groove 422.

[0068] In this embodiment, the number of positioning grooves 422 is the same as the number of bending adjustment components 320, and the circumferential spacing angles of the plurality of positioning grooves 422 and the plurality of bending adjustment components 320 are the same. For example, when four bending adjustment components 320 are arranged at 90 degrees in the circumferential direction, the number of positioning grooves 422 is also four, and the four positioning grooves 422 are also arranged at 90 degrees in the circumferential direction, so that the plurality of positioning grooves 422 correspond one-to-one to the plurality of bending adjustment components 320. When the protrusion 413 is adapted to one of the bending adjustment components 320, the locking slider 421 can be plugged into the corresponding positioning groove 422. After the bending adjustment component 320 drives the sheath 100 to bend, the doctor can drive the locking slider 421 to plug into the positioning groove 422, thereby positioning the sheath 100 in the bending state, so that the doctor will not release the bending state due to accidental touch when operating other components.

[0069] The locking assembly 420 also includes a locking groove 423 provided on the direction adjustment knob 415. When the locking slider 421 is plugged and fixed into the locking groove 423, the direction adjustment knob 415 cannot rotate because it is locked circumferentially, thereby preventing the doctor from accidentally touching the sheath 100 before performing the bending work, thereby increasing the success rate of the operation.

[0070] A lock key 414 is provided on the steering shaft 411, and a keyway 416 is provided on the steering knob 415. The steering shaft 411 and the steering knob 415 are connected through the lock key 414 and the keyway 416. The steering shaft 411 is provided with a main cavity 417 along the axial direction, and the sheath tube 100 passes through the main cavity 417. The proximal end of the sheath tube 100 is provided with a sealing device 20, which includes a sealing end 110 connected to the sheath tube 100. Figure 3 and Figure 14 As shown. Figure 1 and Figure 3 The handle body 200 also includes a proximal shell 220 and a distal shell 230. The bending adjustment mechanism 300 and the direction adjustment mechanism 400 are respectively arranged between the proximal shell 220 and the distal shell 230. The sealing device 20 is arranged in the proximal shell 220 to seal the sheath 100 and prevent blood leakage.

[0071] A handle 210 is provided between the proximal housing 220 and the proximal end cap 350. The handle 210 connects the proximal end cap 350 and the proximal housing 220. On the other hand, the doctor can hold the handle 210 and rotate the bending knob 310 or the direction knob 415 during operation to adjust the sheath 100.

[0072] During operation, the raised portion 413 on the shaft 412 can lift the bending track 321 via the protruding point to achieve the bending function. At the position of the shaft 412 not on the raised portion 413, the bending track 321 and the bending slider 322 in the remaining bending assembly 320, under the elastic force of the driving member 340, disengage the bending slider 322 from the bending knob 310 and keep it stationary. After completing the bending step in one direction, the direction adjustment knob 415 is rotated to rotate the raised portion 413 to the position required for the next direction, causing the raised portion 413 to lift another bending track 321, achieving another bending step based on the original bending, ultimately achieving three-dimensional bending.

[0073] In summary, the conveying system 10 of the present application has a plurality of circumferentially spaced bend adjustment components 320, which can realize independent bending in multiple directions. The conveying system 10 also has a direction adjustment mechanism, which can selectively and independently control one of the plurality of bend adjustment components 320 to bend the sheath 100, and realize three-dimensional bending in space through a combination of multiple bending directions. It is thus suitable for curved blood vessels and branch blood vessels of various shapes. When the one-way bending cannot be aligned with the branch blood vessel, the bending direction of the sheath 100 can be compensated by the bending components 320 in other directions, so that the sheath 100 is aligned with the branch blood vessel without rotating the sheath 100. It effectively avoids damage to the inner wall of the blood vessel caused by the rotation of the sheath 100.

[0074] Embodiment 2: Embodiment 2 of the present invention proposes a conveying system 10, wherein, in combination with Figure 3 as well as Figures 13 to 15 As shown, the device includes a sheath 100 and a sealing device 20 connected to the sheath. The sealing device 20 includes a sealing end 110 connected to the sheath 100 and a sealing mechanism 120 disposed on the sealing end 110. The sealing mechanism 120 is used to seal the interventional instrument inserted into the sheath 100. The interventional instrument inserted into the sheath 100 includes, but is not limited to, an inner tube, a puncture device, a dilator, etc. The sealing mechanism 120 includes a rotating portion 500 and a sealing ring 600. The rotating portion 500 is rotatably connected to the sealing end 110.

[0075] Combine Figures 17 to 20 As shown, the sealing ring 600 includes a fixed end 610 , a rotating end 620 and a sealing portion 630 located between the fixed end 610 and the rotating end 620 . The fixed end 610 is fixedly connected to the sealing end head 110 , and the rotating end 620 is fixedly connected to the rotating portion 500 .

[0076] The sealing end 110 is provided with an annular terminal groove 111. The rotating portion 500 is sleeved within the terminal groove 111. The rotating portion 500 drives the sealing ring 600 to rotate, causing the opening of the sealing portion 630 to contract. The sealing ring 600 is a resilient annular structure and can be made of a rubber ring or silicone ring. During the twisting process, the edge of the sealing portion 630 is gradually stretched and gradually contracts toward the center of the twist, eventually converging at the twisting center point to achieve the sealing function.

[0077] Through the above-mentioned technical solution of the present application, the rotating part 500 drives the sealing ring 600 to rotate, so that the sealing ring 600 generates torsional deformation during the rotation process, so that the opening of the sealing part 630 shrinks from the periphery to the center. Therefore, compared with the existing sealing gasket, after the interventional instrument is inserted, there is no cracking caused by the incision. Therefore, the sealing part 630 can completely fit the edge of the interventional instrument during the contraction process to achieve sealing of the interventional instrument.

[0078] like Figure 16 As shown, an elastic member 510 is provided between the sealing end 110 and the rotating part 500. The elastic member 510 is used to drive the rotating part 500 to rotate relative to the sheath tube 100, so as to drive the sealing ring 600 to twist with the axis of the sheath tube 100 as the rotation center, so that the opening of the sealing part 630 shrinks toward the rotation center.

[0079] In this embodiment, the elastic member 510 is a compression spring. Figure 16 、 Figure 21 and Figure 23 As shown, the sealing end head 110 is provided with a driving groove 112, which is provided at the distal end of the terminal groove 111. The elastic member 510 is provided in the driving groove 112. The rotating portion 500 is provided with a driving block 521, which is slidably connected to the driving groove 112. The elastic member 510 drives the rotating portion 500 to rotate by abutting the driving block 521. That is, the direction of the thrust F of the elastic member 510 on the driving block is as shown in FIG. Figure 16 As shown, the rotating portion 500 drives the sealing ring 600 to twist, thereby driving the opening of the sealing portion 630 to shrink toward the rotation center, thereby sealing the interventional instrument inserted therein.

[0080] like Figure 14 As shown, the sealing end 110 is also provided with an outer cover 700 and a linkage assembly 800 connected to the outer cover 700. The linkage assembly 800 is used to drive the rotating part 500 to rotate when the interventional instrument penetrates the sealing mechanism 120, so that the opening of the sealing part 630 opens in a direction away from the rotation center, so as to reduce the torsional force of the sealing ring 600, thereby facilitating the interventional instrument to pass through the sealing part 630 of the sealing ring 600.

[0081] Combine Figure 17 、 Figure 19 and Figure 25As shown, the outer cover 700 and the sealing end head 110 are fixedly connected by a snap assembly 720, that is, there is no relative displacement between the outer cover 700 and the sealing end head 110. An inner ring fixing member 113 is provided on the inner side of the sealing end head 110, and the fixing end 610 is fixedly connected between the inner ring fixing member 113 and the sealing end head 110. In this embodiment, a sealing cavity 114 is provided inside the sealing end head 110. The sealing cavity 114 has a circular cross-section and an inner diameter greater than the inner diameter of the inner lumen of the sheath tube 100. The sealing cavity 114 and the inner lumen of the sheath tube 100 are connected by a connecting cavity 101. The connecting cavity 101 is tapered. An assembly platform 102 is provided at the connection between the connecting cavity 101 and the sealing cavity 114, and one end of the inner ring fixing member 113 is fixedly connected to the assembly platform 102. A fixing groove 115 is provided at the other end of the sealing end head 110 relative to the connecting cavity 101, and the fixing end 610 is fixedly connected between the inner ring fixing part 113 and the fixing groove 115, wherein the fixing end 610 of the sealing ring 600 is interference fit with the inner ring fixing part 113 and the fixing groove 115.

[0082] Combine Figure 17 、 Figure 22 and Figure 23 As shown, the rotating portion 500 includes a knob fixing member 520 and an outer ring fixing member 530. The knob fixing member 520 is sleeved on the outside of the outer ring fixing member 530, and the rotating end 620 is fixedly connected between the knob fixing member 520 and the outer ring fixing member 530. Specifically, the rotating end 620 of the sealing ring 600 is fixed between the knob fixing member 520 and the outer ring fixing member 530 by an interference fit. The driving block 521 is specifically provided on the distal side of the knob fixing member 520.

[0083] In this embodiment, a connecting groove 522 is provided on the knob fixing member 520, and a connecting block 532 is provided on the outer ring fixing member 530. The connecting groove 522 and the connecting block 532 are respectively arranged along the axial direction of the knob fixing member 520 and the outer ring fixing member 530. When the knob fixing member 520 and the outer ring fixing member 530 are sleeved together, the connecting block 532 is inserted into the connecting groove 522, thereby preventing relative rotation between the knob fixing member 520 and the outer ring fixing member 530. This compresses and secures the rotating end 620 of the sealing ring 600, preventing relative sliding.

[0084] Combine Figure 17 、 Figure 21 and Figure 22As shown, the sealing end head 110 is provided with a limiting sliding groove 116, which is arranged on the side wall of the terminal groove 111. The limiting sliding groove 116 is a through groove arranged along the circumference of the sealing end head 110. The outer ring fixing member 530 is provided with a slider 531 adapted to the limiting sliding groove 116. Therefore, the outer ring fixing member 530, the rotating end 620 of the sealing ring 600, and the knob fixing member 520 can rotate along the sealing end head 110 as a whole, but cannot move axially along the sealing end head 110.

[0085] Combine Figure 17 、 Figure 24 and Figure 26 As shown, the central portion of the rotating portion 500 is provided with an assembly hole 523, which is coaxially arranged with the outer housing 700. In this embodiment, the assembly hole 523 is formed on the outer ring fixing member 530 and is coaxially arranged with the outer ring fixing member 530. The central portion of the outer housing 700 is provided with an assembly portion 710 that plugs into the assembly hole 523, and the linkage assembly 800 is disposed between the assembly portion 710 and the rotating portion 500.

[0086] Combine Figure 19 、 Figure 24 and Figure 26 As shown, the linkage assembly 800 includes a steering groove 810, a guide rod 820, and a guide hole 830. The steering groove 810 is provided on the rotating portion 500 and is connected to the assembly hole 523. Specifically, the steering groove 810 is provided on the outer ring fixing member 530 and is connected to the assembly hole 523. When the guide rod 820 slides radially away from the center, the guide rod 820, through the steering groove 810, drives the rotating portion 500 to rotate in a direction opposite to the elastic force of the elastic member 510. That is, when the guide rod 820 slides radially away from the center, the driving force exerted by the linkage assembly 800 on the rotating portion 500 is opposite to the driving force exerted by the elastic member 510 on the rotating portion 500, thereby offsetting the tightening force of the sealing ring 600 and reducing the thrust required for insertion of the interventional instrument.

[0087] The diverting chute 810 includes a chute bottom wall 811 and chute sidewalls 812. The chute bottom wall 811 of the diverting chute 810 is arranged in an arc shape. A guide hole 830 is provided on the assembly portion 710 and is arranged radially along the outer cover 700. A guide rod 820 is slidably connected to the guide hole 830. One end of the guide rod 820 abuts the chute bottom wall 811 of the diverting chute 810, and the other end of the guide rod 820 passes through the guide hole 830.

[0088] The steering chute 810 is arranged in a spiral diameter-changing manner. The radial depth of the chute bottom wall 811 of the steering chute 810 is arranged to gradually increase along the direction in which the elastic member 510 drives the rotating part 500 to rotate. The radial depth of the chute bottom wall 811 of the steering chute 810 is the distance between the chute bottom wall 811 and the center of the rotating part 500. The chute side wall 812 is arranged on the side with the largest radial depth of the chute bottom wall 811. Figure 18 and Figure 20 As shown, when the guide rod 820 slides toward the bottom wall 811 of the steering slot 810, that is, when the guide rod 810 moves radially away from the center, the guide rod 820 can push the knob fixing member 520 to rotate in the opposite direction of the elastic force of the elastic member 510 through the steering slot 810.

[0089] Since the sealing portion 630 needs to completely seal the opening of the sealing portion 630 when no interventional instrument is inserted to prevent blood leakage, if the sealing portion 630 is in a completely sealed state, a large amount of thrust is required to insert the interventional instrument through the sealing portion 630, which is not conducive to the doctor's clinical operation. In this embodiment, a linkage assembly 800 is provided on the sealing end 110. When an interventional instrument is inserted, the linkage assembly 800 drives the sealing ring 600 to rotate in the opposite direction to its sealing state, so that the sealing portion 630 is released from the completely tightened sealing state, thereby reducing the thrust required for the interventional instrument to pass through the sealing portion 630.

[0090] It should be noted that when an interventional instrument penetrates the sealing mechanism 120, the torsional force exerted by the linkage assembly 800 on the sealing ring 600 is in the opposite direction compared to when the instrument is sealed. The opening in the sealing portion 630, caused by the reverse torsion of the sealing ring 600, gradually increases as the guide rod 820 moves. At this point, the opening of the sealing portion 630 is smaller than the outer diameter of the interventional instrument, thereby ensuring the sealing effect of the sealing portion 630 on the interventional instrument while reducing the thrust required to penetrate the sealing portion 630. Because the sealing ring 600 achieves elastic torsional deformation through rotation, the opening of the sealing portion 630 converges toward the torsion center, eliminating the problem of bleeding from cracks in existing sealing gaskets.

[0091] Combine Figure 20 、 Figure 24 and Figure 26As shown, a plurality of linkage components 800 are provided on the sealing end head 110, a plug hole 711 is provided in the middle of the assembly portion 710, the plug hole 711 is coaxially arranged with the outer cover 700, one end of a plurality of guide rods 820 respectively abuts against the corresponding plurality of steering grooves 810, and the other ends of the plurality of guide rods 820 are respectively located in the plug hole 711 after passing through the guide hole 830, and the guide rod 820 is provided at one end thereof inside the plug hole 711 and a guide portion 821 is provided. The guide portion 821 is used to drive the guide rod 820 to slide along the guide hole 830 toward the bottom wall 811 of the steering groove 810 when the interventional instrument penetrates the sealing mechanism 120.

[0092] In this embodiment, the guide portion 821 is configured as a conical structure. Thus, when an interventional instrument abuts the conical surface of the guide portion 821, the interventional instrument can drive the guide rod 820 to slide away from the center through the guide portion 821. During this movement, the guide rod 820 squeezes the bottom wall 811 of the steering chute 810, causing the knob fixing member 520 to rotate in the direction of the opening of the sealing ring 600 under the squeezing action of the guide rod 820, and the elastic member 510 is compressed. At this time, the sealing portion 630 of the sealing ring 600 gradually opens under the drive of the knob fixing member 520, allowing the interventional instrument to penetrate the sheath 100 with less friction.

[0093] The elastic force of the elastic member 510 is always greater than the reaction force generated by the torsional deformation of the sealing ring 600. In its natural state, the elastic member 510 overcomes the reaction force generated by the torsional deformation of the sealing ring 600 through its own elastic force and drives the knob fixture 520 to rotate, causing the guide rods 820 to slide toward the center of the knob fixture 520 until the multiple guide rods 820 abut against each other and cannot move. At this point, the sealing ring 600 twists with the rotation of the knob fixture 520 until it reaches a sealed state.

[0094] like Figure 17 As shown, a pressure ring 712 is installed within the insertion hole 711, and the opening of the pressure ring 712 gradually decreases in size from the outside to the inside. The pressure ring 712 not only provides a preliminary seal for the interventional instrument, but also helps center the interventional instrument when it is inserted into the sealing mechanism 120. This provides a double guarantee against bleeding, improves the success rate of interventional instrument insertion, and enhances surgical efficiency.

[0095] In addition, when inserting interventional instruments of different sizes, the outer diameters of the interventional instruments are different, so the movement stroke of the guide rod 820 is also different, so the opening size of the sealing portion 630 of the sealing ring 600 also changes accordingly, thereby adapting to interventional instruments of different sizes.

[0096] In other embodiments, the guide portion 821 is configured as an inclined surface structure disposed toward the outside of the outer cover 700. It should be noted that any inclined surface structure that enables the guide rod 820 to slide toward the bottom wall 811 of the steering chute 810 during the abutment and pushing process of the interventional instrument can be applied to the present invention.

[0097] In summary, the sealing device 20 of this embodiment rotates the sealing ring 600 via the rotating portion 500, causing the sealing ring 600 to twist during rotation. This causes the opening of the sealing portion 630 to contract from the periphery toward the center. Therefore, compared to existing sealing gaskets, after the interventional instrument is inserted, there is no cracking caused by the incision. The sealing portion 630 can completely conform to the edge of the interventional instrument during the contraction process, effectively sealing the interventional instrument. Furthermore, when the interventional instrument penetrates the sealing mechanism 120, the torsional force exerted by the linkage assembly 800 on the sealing ring 600 is opposite to that in the sealing state. The reverse twisting of the sealing ring 600 may cause the sealing portion 630 to open. In this case, the opening of the sealing portion 630 is smaller than the outer diameter of the interventional instrument, thereby ensuring the sealing effect of the sealing portion 630 on the interventional instrument while reducing the thrust required to penetrate the sealing portion 630. Because the sealing ring 600 achieves elastic torsional deformation through rotation, the opening of the sealing portion 630 converges toward the center of torsion, eliminating the problem of bleeding from cracks in existing sealing gaskets.

[0098] The above description is merely a preferred embodiment of the present invention, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A delivery system comprising a sheath tube and a sealing device connected to the sheath tube, characterized in that: The sealing device comprises a sealing end head connected to the sheath tube and a sealing mechanism arranged on the sealing end head; the sealing mechanism comprises a rotating part and a sealing ring, the rotating part is rotatably connected to the sealing end head, the sealing ring comprises a fixed end, a rotating end and a sealing part located between the fixed end and the rotating end, the fixed end is fixedly connected to the sealing end head, and the rotating end is fixedly connected to the rotating part; the rotating part can drive the sealing ring to rotate so that the opening of the sealing part shrinks; an elastic member is provided between the sealing end head and the rotating part, and the elastic member is used to drive the rotating part to rotate relative to the sheath tube, so as to drive the sealing ring to twist with the axis of the sheath tube as the rotation center, so that the opening of the sealing part shrinks toward the direction of the rotation center; the sealing end head is also provided with an outer cover and a sealing ring connected to The linkage component of the outer cover is used to drive the rotating part to rotate when the interventional instrument penetrates the sealing mechanism, so that the opening of the sealing part opens in the direction away from the rotation center; an assembly hole is provided in the middle of the rotating part, and the assembly hole is coaxially arranged with the outer cover, and an assembly part that is plugged into the assembly hole is provided in the middle of the outer cover, and the linkage component is arranged between the assembly part and the rotating part; the linkage component includes a steering slide, a guide rod and a guide hole, the steering slide is arranged on the rotating part, and the steering slide is connected to the assembly hole; the guide hole is arranged on the assembly part, the guide hole is arranged along the radial direction of the outer cover, the guide rod is slidably connected to the guide hole, and one end of the guide rod abuts against the bottom of the steering slide, and the bottom of the steering slide is arranged in an arc shape.

2. The conveying system according to claim 1, characterized in that The outer cover and the sealing end head are fixed by a snap-fit ​​assembly; an inner ring fixing piece is provided on the inner side of the sealing end head, and the fixed end is fixedly connected between the inner ring fixing piece and the sealing end head.

3. The conveying system according to claim 1, characterized in that A plurality of linkage components are provided on the sealing end head, a plug hole is provided in the middle of the assembly part, the plug hole is coaxially arranged with the outer cover, one end of the plurality of guide rods is respectively abutted against the corresponding plurality of steering grooves, and the other ends of the plurality of guide rods are respectively located in the plug hole, and the guide rod is provided with a guide part at one end inside the plug hole, and the guide part is used to drive the guide rod to slide along the guide hole toward the bottom of the steering groove when the interventional instrument penetrates the sealing mechanism.

4. The conveying system according to claim 3, characterized in that When the guide rod moves in a radial direction away from the center, the guide rod drives the rotating portion to rotate in a direction opposite to the elastic force of the elastic member through the deflection slot.

5. The conveying system according to claim 3, characterized in that The guide portion is configured as an inclined surface structure arranged toward the outside of the outer cover; a pressure ring is arranged in the plug hole, and the opening size of the pressure ring gradually decreases from the outside to the inside.

6. The conveying system according to claim 1, characterized in that The rotating part includes a knob fixing part and an outer ring fixing part. The knob fixing part is sleeved on the outside of the outer ring fixing part, and the rotating end is fixedly connected between the knob fixing part and the outer ring fixing part; the assembly hole and the steering groove are both provided on the outer ring fixing part.

7. The conveying system according to claim 6, characterized in that The sealing end head is provided with a limiting sliding groove, and the limiting sliding groove is arranged along the circumference of the sealing end head. The outer ring fixing piece is provided with a sliding block adapted to the limiting sliding groove.

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