Interventional conveying sheath

Abstract

The utility model relates to the technical field of medical instruments, in particular to an intervention conveying sheath. The intervention conveying sheath comprises a bending adjusting handle used for adjusting the bending degree of a sheath tube; clamping structures are arranged at the two ends of the connecting piece, and the connecting piece is movably connected with the end, away from the sheathing canal, of the bending adjusting handle; the connecting valve body is arranged at one end, far away from the bending adjusting handle, of the connecting piece; in addition, the other end, away from the splicing piece, of the connecting valve body is provided with two connecting ports, and the connecting ports are provided with clamping structures. According to the embodiment, according to the intervention conveying sheath, the bending of the sheath tube is adjusted through the bending adjusting handle, the connecting piece is connected with the connecting valve body at the end of the bending adjusting handle, and the connecting valve body is provided with two connecting ports. The two connectors of the connecting valve body are provided with detachable connecting structures, different functional assemblies can be replaced and connected according to requirements, functions under different conditions can be provided for a user, assembling or disassembling can be achieved, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an interventional delivery sheath and. Background Art

[0002] Interventional therapy is a minimally invasive treatment using modern high-tech means. Under the guidance of medical imaging equipment, special catheters, guidewires and other precision medical devices are introduced into the human body to diagnose and locally treat lesions in the human body. Interventional surgery causes little trauma to the human body, is less invasive, has a fast recovery and good effect. It is a medical technology that has rapidly emerged and been widely promoted in recent years.

[0003] At present, interventional surgery usually requires the use of interventional diagnostic sheaths (such as guide catheters, delivery sheaths, guide sheaths, etc.) to establish a channel between the lesion site in the patient's body and the external operating end, so as to introduce various diagnostic and therapeutic instruments, drugs, implantable devices, etc. to the patient's lesion site, so as to avoid the use of surgical operations to reach the lesion site. Interventional diagnostic sheaths are generally composed of a tube body and a handle. The tube body is usually long and has an inner cavity used as a channel. The tube body has a distal end and a proximal end. The distal end can easily enter the human body cavity (such as a blood vessel), and the proximal end is used to connect the handle for professional medical staff to use.

[0004] In the process of realizing the present invention, the inventors of the present invention found that: currently, the assembly of the interventional delivery sheath is difficult, the user experience is not good, and the interventional delivery sheath is not easy to connect during operation. Summary of the invention

[0005] In view of the above-mentioned defects of the prior art, the main purpose of the present invention is to provide an interventional delivery sheath, comprising:

[0006] Bending handle, used to adjust the sheath;

[0007] A splicing piece, arranged at one end of the bending adjustment handle away from the sheath tube;

[0008] A connecting valve body is arranged at an end of the splicing piece away from the bending adjustment handle;

[0009] Furthermore, two connection ports are arranged at the other end of the connecting valve body away from the splicing piece.

[0010] Furthermore, the bending adjustment handle comprises: an adjustment body, and two ends of the adjustment body are respectively provided with a first connection structure and a second connection structure;

[0011] A sliding member, which is arranged on the outer surface of the adjusting body and can move linearly on the outer surface of the adjusting body;

[0012] A connecting member, provided at one end of the adjusting body and movably connected to the first connecting structure;

[0013] a protective member, disposed on the outer surface of the connecting member; and

[0014] An adjusting shell, one end of which is arranged between the connecting piece and the protecting piece, and an inner wall of which is threadedly connected to the outer surface of the sliding piece.

[0015] Furthermore, the regulating body comprises a first tube body, one end of the first tube body is provided with a first connecting structure, and an outer surface of the first tube body is provided with a limiting groove;

[0016] A stopper, disposed at the other end of the first tube body, and connected to the adjustment housing;

[0017] The second tube body is arranged on a side of the blocking member away from the first tube body, and the second tube body is connected to the first tube body. A second connecting structure is arranged at the end of the second tube body.

[0018] Furthermore, a first sealing member is provided at a position of the baffle plate close to the regulating housing.

[0019] Furthermore, the outer surface of the sliding member is provided with threads;

[0020] a limiting protrusion, which is arranged on the inner wall of the sliding member and cooperates with the limiting groove; and,

[0021] The fixing member is arranged on one side of the sliding member, is used for fixing and installing the bending wire, and moves with the sliding member.

[0022] Further, the connecting valve body comprises: a first connecting body, one end of the first connecting member is connected to the connecting member, and has a through hole inside;

[0023] A second connector is disposed on a side of the first connector and is internally connected to the through hole; and

[0024] The reinforcement member is arranged between the first connector and the second connector.

[0025] Furthermore, the two connecting ports of the connecting valve body are respectively provided with a first connecting head and a second connecting head.

[0026] Furthermore, sealing rings are provided at the positions where the connecting valve body is connected to the splicing piece and the expander respectively.

[0027] Furthermore, the interventional delivery sheath also includes a sheath tube, one end of which passes through the bending adjustment handle and the splicing piece and is connected to the connecting valve body, and the bending adjustment wire of the sheath tube is connected to the bending adjustment handle.

[0028] In one aspect, an embodiment further discloses an interventional device, which includes any one of the interventional delivery sheaths described.

[0029] The beneficial effects of the above technical solution provided by the embodiment of the present invention include at least:

[0030] In the embodiment, the interventional delivery sheath has the function of a bending handle, through which the bending handle is used to adjust the bending of the sheath tube, and the end of the bending handle is connected to the connecting valve body through a splicing piece, and the connecting valve body is provided with two connection ports, for example, a dilator can be connected. In addition, the two interfaces of the connecting valve body are provided with a detachable connection structure, and different functional components can be replaced and connected according to needs, which can provide users with functions in different situations, can be assembled or disassembled, and is easy to operate.

[0031] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0032] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0034] Figure 1 It is an exploded view of an interventional delivery sheath according to an embodiment of the utility model;

[0035] Figure 2 It is a schematic diagram of an interventional delivery sheath according to an embodiment of the utility model;

[0036] Figure 3 This utility model Figure 5 AA section view;

[0037] Figure 4 It is a schematic diagram of the interventional delivery sheath of the utility model;

[0038] Figure 5 It is an exploded view of the schematic diagram of the utility model;

[0039] Figure 6 This utility model Figure 5 An exploded view of another state of

[0040] Figure 7 It is a schematic diagram of an adjusting body according to an embodiment of the utility model.

[0041] Reference numerals:

[0042] 1. Adjust the handle;

[0043] 10. Adjustment body; 11. Protection member; 12. Adjustment housing; 13. Sliding member; 14. Splicing member; 15. First sealing member; 16. Second sealing member;

[0044] 100, first tube body; 101, second tube body; 102, stopper; 103, second connection structure; 104, limiting groove; 105, first connection structure; 120, anti-slip protrusion;

[0045] 130, thread; 131, limiting protrusion; 132, fixing piece; 133, mounting hole;

[0046] 2. Connector; 20. First connector; 21. Second connector;

[0047] 3. Connect the valve body;

[0048] 30. First connecting member; 31. Second connecting body; 32. Reinforcement member;

[0049] 4. Sheath. DETAILED DESCRIPTION

[0050] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0051] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0052] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0053] In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, "plurality" means more than two, unless otherwise clearly and specifically defined.

[0054] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0055] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0056] In the prior art, adjustable sheaths are used to establish access channels for vascular interventional surgeries, assist other instruments in entering and exiting blood vessels, and effectively reduce damage to the vessel wall caused by the instruments, while reducing blood flow loss. Adjustable sheaths are required in almost all vascular interventional surgeries.

[0057] Please refer to the attached Figure 4 and 5 , an interventional delivery sheath, comprising:

[0058] Bending handle, used to adjust the sheath;

[0059] A connecting member 2, provided at one end of the bending adjustment handle away from the sheath tube;

[0060] A connecting valve body 3 is provided at an end of the connecting member 2 away from the bending adjustment handle;

[0061] In addition, two connection ports are arranged at the other end of the connecting valve body 3 away from the splicing piece.

[0062] At present, the interventional delivery sheath is difficult to assemble, and the user experience is not good. At the same time, the interventional delivery sheath is not easy to connect when the connection function is operated. In an embodiment, the bending adjustment handle is movably connected to the connecting valve body 3 by a connecting piece 2, and the connecting valve body 3 is provided with at least three connection ports, one of which is used for the movably connected bending adjustment handle, and the other connection ports are used for the movably connected other functional components. The detachable structure between the bending adjustment handle and the connecting valve body 3 can realize rapid disassembly and assembly, realize rapid assembly and disassembly of the equipment, facilitate the storage and transportation of the equipment, and can also realize rapid assembly during use, increase the combination between the various functional components, and ensure that the interventional delivery sheath forms a suitable delivery sheath under various use environments, making the scope of application wider.

[0063] In the embodiment, the interventional delivery sheath has the function of a bending handle 1, through which the bending handle is used to adjust the bending of the sheath tube, and the end of the bending handle is connected to a connecting valve body 3 through a connecting member 2, and two connecting ports are provided on the connecting valve body 3, for example, a dilator can be connected. In addition, the two interfaces of the connecting valve body 3 are provided with a detachable connection structure, and different functional components can be replaced and connected according to needs, which can provide users with functions in different situations, can be assembled or disassembled, and is easy to operate.

[0064] Please refer to the attached Figure 6 and 7 , In a further embodiment, the bending adjustment handle comprises: an adjustment body 10, and two ends of the adjustment body 10 are respectively provided with a first connection structure 105 and a second connection structure 103;

[0065] The sliding member 13 is provided on the outer surface of the adjusting body 10 and can move linearly on the outer surface of the adjusting body 10;

[0066] A connecting member 2, provided at one end of the adjusting body 10, and movably connected to the first connecting structure 105;

[0067] A protective member 11 is provided on the outer surface of the connecting member 2; and

[0068] The adjusting housing 12 has one end disposed between the connecting member 2 and the protecting member 11 , and the inner wall of the adjusting housing 12 is connected to the outer surface of the sliding member 13 by a thread 130 .

[0069] It can be understood that the sliding member 13 of this embodiment is used on the bending handle 1 for operating the adjustable bending sheath tube, and the sliding member 13 is set as a slider with an annular structure, and can also be considered as a tubular structure. In the embodiment, the sliding member 13 is sleeved on the adjustment body 10, so in order to enable the sliding member 13 to move relative to the adjustment body 10, a thread 130 is set on the outer surface of the sliding member 13.

[0070] In the embodiment, the connection member 2 and the protection member 11 cooperate with each other, so that the adjustment housing 12 can rotate radially around the adjustment body 10. At the same time, the inner wall of the adjustment housing 12 cooperates with the sliding member 13, so that the sliding member 13 can move along the axial direction of the adjustment body 10 when the adjustment housing 12 is rotated. That is, the installation of the adjustment housing 12 is achieved through the cooperation between the adjustment body 10 and the protection member 11. In this way, the movable installation of the adjustment housing 12 is effectively guaranteed, and the adjustment of the bending sheath can be achieved through the cooperation of the adjustment housing 12 with the sliding member 13. In the embodiment, the structure of the adjustment body 10 and the sliding member 13 is simpler, and the disassembly and assembly are more convenient, which is conducive to production and maintenance.

[0071] Please refer to the attached Figure 7 In a further embodiment, the regulating body 10 comprises a first tube body 100, a first connecting structure 105 is provided at one end of the first tube body 100, and a limiting groove 104 is provided on the outer surface of the first tube body 100;

[0072] A stopper 102 is provided at the other end of the first tube body 100 and is connected to the adjustment housing 12;

[0073] The second tube body 101 is disposed on a side of the stopper 102 away from the first tube body 100 , and the second tube body 101 is connected to the first tube body 100 . A second connection structure 103 is disposed at the end of the second tube body 101 .

[0074] It can be understood that in order to ensure that the bending shell only rotates in the radial direction when it needs to be bent, a stopper 102 of a limiting structure is required on the first tube body 100, and the stopper 102 can limit the axial movement of the bending shell at this end, while the other end of the first tube body 100 is provided with a connecting member 2 and a protective member 11, and the axial movement is limited at this end by the connecting member 2 and the protective member 11, so that the bending shell can only rotate in the radial direction. In the embodiment, the convenience of operation is improved through such cooperation, and the structure is simpler.

[0075] The ends of the first tube body 100 and the second tube body 101 are respectively provided with a first connection structure 105 and a second connection structure 103, which are used to detachably connect other parts. For example, the first connection structure 105 is used to detachably connect the connector 2. In an actual embodiment, the first connection structure 105 can be a thread 130 or a clamping structure.

[0076] The limiting groove 104 is arranged along the axial direction of the first tube body 100 and is used to limit the moving direction of the sliding member 13 , that is, the sliding member 13 can only move along the limiting groove 104 .

[0077] Please refer to the attached Figure 6 In a further embodiment, a first sealing member 15 is provided at a position of the baffle plate close to the regulating housing 12 .

[0078] In order to ensure the sealing of the bending handle 1, it can be understood that the first sealing member 15 is arranged on the adjustment body 10, and is arranged on the side of the baffle close to the adjustment housing 12, and cooperates with the inner wall of the adjustment housing 12 to achieve the sealing of the bending handle 1. At the same time, a second sealing member 16 is also arranged on the connecting member 2, and the second sealing member 16 cooperates with the inner wall of the protective member 11 to achieve a sealing effect.

[0079] Please refer to the attached Figure 6 , In a further embodiment, the outer surface of the sliding member 13 is provided with a thread 130;

[0080] The limiting protrusion 131 is provided on the inner wall of the sliding member 13 and cooperates with the limiting groove 104; and,

[0081] The fixing member 132 is disposed on one side of the sliding member 13 , and is used for fixing and installing the bending wire, and moves with the sliding member 13 .

[0082] It can be understood that in order to make the sliding member 13 only make linear movements in the axial direction, in the embodiment, at least one limiting protrusion 131 is provided on the inner wall of the sliding member 13. The limiting protrusion 131 here is installed by cooperating with the adjusting body 10, so that the sliding member 13 only makes linear movements along the adjusting body 10.

[0083] In an actual embodiment, the sliding member 13 is a structural member of an annular structure, and a limiting protrusion 131 is provided on the inner wall of the structural member. The limiting protrusion 131 cooperates with the outer surface of the adjusting body 10. The outer surface of the sliding member 13 is provided with a thread 130, and the thread 130 is connected to the inner wall thread 130 of the adjusting shell 12. The sliding member 13 can be adjusted to move axially by rotating the adjusting shell 12, and a fixing member 132 is provided on the sliding member 13. The bending adjustment wire can be installed through the mounting hole 133 of the fixing member 132. When the sliding member 13 moves axially, the bending adjustment wire can be pulled to adjust the curvature of the bending adjustment sheath.

[0084] Please refer to the attached Figure 1 , In a further embodiment, the connecting valve body 3 comprises: a first connecting body, one end of the first connecting member 302 is connected to the connecting member 2 and has a through hole inside;

[0085] A second connecting body 31 is provided on the side of the first connecting body and is internally connected to the through hole; and

[0086] The reinforcement member 32 is disposed between the first connecting body and the second connecting body 31 .

[0087] It is understandable that, since the current operating handle cannot quickly connect various functional modules when connecting various functions, or can only connect one functional module at a time, there are inconveniences in actual operation. In the embodiment, the connecting valve body 3 is provided with a plurality of connecting ports, specifically, the second connecting body 31 is connected to the middle part of the first connecting body, and the first connecting body is internally connected to the second connecting body 31, and a reinforcing member 32 is provided between the first connecting body and the second connecting body 31, and at least three connecting ports are provided through the connecting valve body 3, one of which is used for active connection of the bending handle, and the other connecting ports are used for active connection of other functional components.

[0088] Please refer to the attached Figure 1 In a further embodiment, the two connecting ports of the connecting valve body 3 are respectively provided with a first connecting head 20 and a second connecting head 21 .

[0089] It can be understood that in order to connect various functional modules more quickly, the connecting valve body 3 is provided with a first connector 20 and a second connector 21 at two other connecting ports, in addition to the connecting port for connecting the bending adjustment handle, and the two are respectively connected to the expander and the exhaust valve, etc., so as to facilitate operation and ensure rich functions.

[0090] The catheter sheath also includes a dilator, which extends along the axial direction of the catheter sheath; wherein the dilator passes through the hemostatic valve and the seal in sequence, and the outer wall of the dilator is interference fit with the through hole of the seal. In one embodiment, in order to facilitate the catheter sheath to intervene in the human blood vessel, a dilator is provided therein. The dilator penetrates from the proximal end of the catheter sheath and passes out from the distal end of the sheath tube. The dilator tube that passes out of the sheath tube is used to enlarge the small hole of the puncture needle. Since the distal end of the dilator and the distal end of the catheter sheath have a smooth transition, the catheter sheath can smoothly penetrate the small hole formed by the puncture needle on the human body along with the dilator tube, and enter the interior of the blood vessel. The dilator moves axially or rotates circumferentially relative to the catheter sheath.

[0091] If the dilator is pulled out, the emptying catheter is used to draw back the liquid and gas in the sheath. After completing the operation of the catheter sheath intervening in the human body, it is necessary to pull out the guidewire and the dilator to establish a channel in the catheter sheath, and the channel is used for the implanted device to enter. It is understandable that since the dilator occupies a certain volume in the catheter sheath, when the dilator is pulled out, the sealing liquid in the catheter sheath will be insufficient and an effective sealing effect cannot be formed. For this reason, it is necessary to draw back the liquid in the catheter sheath through the emptying catheter so that the blood and the sealing liquid are fully mixed, so that the liquid fills the interior of the catheter sheath again, especially the internal cavity of the hemostatic valve seat. The withdrawal operation can also completely discharge the gas generated by pulling out the dilator.

[0092] In a further embodiment, sealing rings are provided at the positions where the connecting valve body 3 is connected to the connecting body and the expander respectively.

[0093] Please refer to the attached Figure 3 In a further embodiment, the interventional delivery sheath also includes a sheath tube, one end of which passes through the bending adjustment handle and the connector 2 and is connected to the connecting valve body 3, and the bending adjustment wire of the sheath tube is connected to the bending adjustment handle.

[0094] In the embodiment, one end of the sheath first passes through the protective member 11 and the connecting member 2, and then enters the interior of the adjusting body 10, and the bending wire is connected to the sliding member 13. The exhaust pipe is connected to the sheath through the connecting port, and is first connected to the valve with a syringe (pump), and then physiological saline is injected to exhaust the air in the inner cavity of the sheath, that is, the inner cavity is filled with physiological saline to prevent air from entering the human body.

[0095] In the embodiment, the original state of the sheath is a long straight tube, and the distal end of the sheath has an elastic section that can be freely bent within a certain curvature range and actively restore the original state. The bending wire is arranged in the sheath, and the sheath includes a delivery lumen and a bending wire cavity. The bending wire passes through the bending wire cavity and is arranged in the middle of the tube wall of the sheath, and one end of the bending wire is connected to the sliding block. The adjusting housing 12 is adjusted near the proximal end of the sheath, so that the sliding member 13 can move linearly on the adjusting body 10. In this way, the bending wire is subjected to tension, which will cause the elastic section to bend within a certain angle range. If the tension of the bending wire is cancelled, the elastic section will return to the original state of the straight tube.

[0096] Please refer to the attached Figure 2 and 3 On the one hand, an embodiment further discloses an interventional device, which includes any one of the interventional delivery sheaths described.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it; although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and description of the utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. An interventional delivery sheath, characterized in that: include: Bending handle, used to adjust the curvature of the sheath; A splicing piece, wherein both ends of the splicing piece are provided with a clamping structure, and the splicing piece is movably connected with the bending adjustment handle; an end away from the sheath tube; and, A connecting valve body is arranged on the splicing part; an end away from the bending adjustment handle; Furthermore, two connection ports are arranged at the other end of the connecting valve body away from the splicing piece, and the connection ports are provided with a clamping structure; An adjusting body, wherein two ends of the adjusting body are respectively provided with a first connecting structure and a second connecting structure; A sliding member, which is arranged on the outer surface of the adjusting body and can move linearly on the outer surface of the adjusting body; A connecting member, provided at one end of the adjusting body and movably connected to the first connecting structure; A protective member is arranged on the outer surface of the connecting member; and an adjusting shell, one end of which is arranged between the connecting member and the protective member, and the inner wall of which is threadedly connected to the outer surface of the sliding member.

2. The interventional delivery sheath according to claim 1, wherein: The regulating body comprises a first tube body, one end of the first tube body is provided with a first connecting structure, and the outer surface of the first tube body is provided with a limiting groove; A stopper, disposed at the other end of the first tube body, and connected to the adjustment housing; The second tube body is arranged on a side of the blocking member away from the first tube body, and the second tube body is connected to the first tube body. A second connecting structure is arranged at the end of the second tube body.

3. The interventional delivery sheath according to claim 2, wherein: A first sealing member is arranged at a position of the stop member close to the adjusting housing.

4. The interventional delivery sheath according to claim 1, wherein: The outer surface of the sliding member is provided with threads; a limiting protrusion, which is arranged on the inner wall of the sliding member and cooperates with the limiting groove; and, The fixing member is arranged on one side of the sliding member, is used for fixing and installing the bending wire, and moves with the sliding member.

5. The interventional delivery sheath according to claim 1, wherein: The connecting valve body comprises: a first connecting body, one end of which is connected to the connecting piece and has a through hole inside; A second connector is disposed on a side of the first connector and is internally connected to the through hole; and The reinforcement member is arranged between the first connector and the second connector.

6. The interventional delivery sheath according to claim 5, wherein: The two connection ports of the connecting valve body are respectively provided with a quick connector and an expander.

7. The interventional delivery sheath according to claim 5, wherein: Sealing rings are provided at the positions where the connecting valve body is connected to the connecting body and the expander respectively.

8. The interventional delivery sheath according to claim 1, wherein: The interventional delivery sheath also includes a sheath tube, one end of which passes through the bending adjustment handle and the splicing piece and is connected to the connecting valve body, and the bending adjustment wire of the sheath tube is connected to the bending adjustment handle.

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