Multi-lumen vascular puncture sheath

Abstract

The utility model belongs to the technical field of medical apparatus and instruments, and particularly relates to a multi-channel vascular puncture sheath for solving the problem that an existing single-channel puncture sheath cannot simultaneously release multiple embolism protectors. The puncture sheath comprises a multi-channel connecting piece, a puncture sheath tube, a thread hanging device, a puncture sheath elbow, a pressure extension tube and a tee joint; the multi-channel connecting piece is communicated with the tee joint through the pressure extension tube, the distal end thereof is fixed to the proximal end of the puncture sheath tube, at least two independent instrument channels are formed, and the puncture sheath tube and the embolism protector are used for conveying; the thread hanging device is arranged outside the puncture sheath tube, and the inner side of the thread hanging device is provided with a silica gel pad for providing damping to stabilize the position; the puncture sheath elbow is integrally formed with the puncture sheath tube. The utility model can realize embolism protection of multiple branch blood vessels through one-time puncture under the guidance of ultrasound, reduces the injury of a patient, and is especially suitable for cardiac surgery.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and more specifically, to a multi-pathway puncture sheath. Background Technology

[0002] During the treatment of cardiovascular diseases, embolic material may dislodge during surgery, potentially leading to stroke and other brain injury events. To prevent brain injury, doctors need to place embolization protectors in the left and right carotid arteries (or brachiocephalic trunk) to contain, capture, and remove embolic material during surgery.

[0003] Currently, in the field of cardiovascular interventional surgery, there are several intraoperative embolization protection devices, all of which employ interventional techniques, require X-ray angiography guidance, and are all single-channel designs, releasing only one embolization protector at a time. Existing technology, such as the domestic utility model patent for a vascular puncture sheath (patent number CN222285570U), discloses a vascular puncture sheath comprising an outer sheath, a hemostatic valve, a three-way valve, a suture setter, and a dilator. The suture setter abuts against the vessel wall to prevent excessive insertion of the outer sheath, and the suture hole is used to fix the suture for anchoring, solving the problem of the sheath being easily pushed out by blood pressure or accidentally dislodged during large artery puncture. In some embodiments, the distal end of the outer sheath of this puncture sheath has a bend and its circumferential position is adjustable to adapt to the direction of vascular branches. However, this technology still has significant limitations and cannot meet the special needs of cardiac surgery. Only one device channel is formed through the outer sheath, which can only deliver one device (such as a dilator or a single embolization protector) at a time. However, in cardiac surgery, embolization protectors need to be delivered to both the brachiocephalic trunk of the ascending aorta and the left carotid artery at the same time to comprehensively prevent cerebral embolism. This single-channel structure cannot achieve simultaneous delivery of multiple devices, and if two punctures are used, it will increase the risk of vascular injury to the patient.

[0004] In the field of cardiac surgery, intraoperative embolism is also a common complication. However, cardiac surgery operating rooms do not have X-ray machines, so interventional embolism protectors cannot be used. Currently, there are no embolism protector products available for cardiac surgery. Utility Model Content

[0005] This invention provides a multi-pathway puncture sheath suitable for puncture of large veins and arteries, especially large arteries. The sheath can be used under ultrasound guidance, exhibiting excellent ultrasound guidance. Its multi-pathway design allows for simultaneous release of an embolization protector in the left and right carotid arteries (or brachiocephalic trunk). Specifically, it is suitable for ultrasound-guided aortic puncture to establish pathways from the ascending aorta to the brachiocephalic trunk and from the ascending aorta to the left carotid artery, facilitating subsequent delivery of the sheath and embolization protector.

[0006] The purpose of this invention is to provide a multi-pathway vascular puncture sheath to solve the above-mentioned problems.

[0007] To achieve the above-mentioned objectives of this utility model, the following technical solution is adopted:

[0008] This application provides a multi-access vascular puncture sheath, including a multi-access connector, a puncture sheath tube, a hanger, a puncture sheath elbow, a pressure extension tube, and a tee.

[0009] The multi-channel connector is connected to the tee via the pressure extension tube;

[0010] The distal end of the multi-channel connector is fixedly connected to the proximal end of the puncture sheath, so that the puncture sheath can form at least two independent instrument channels for the delivery of the sheath and embolization protector.

[0011] The hanging device is sleeved on the puncture sheath.

[0012] According to some embodiments of this application, the multi-channel connector is an integral or separate structure.

[0013] According to some embodiments of this application, the integrated multi-channel connector is an integrated hemostatic valve, including a self-sealing silicone pad, a hemostatic valve cap, a hemostatic valve body, and a gasket.

[0014] The integrated multi-channel connector has two or more channels. The proximal end of the puncture sheath is connected to the integrated multi-channel connector to form two or more instrument channels. The gasket has two independent openings that are respectively connected to the instrument channels.

[0015] According to some embodiments of this application, the split-type multi-channel connector includes a hemostatic valve and a connector, wherein the connector is Y-shaped, U-shaped, V-shaped or W-shaped, and both ends of the connector are respectively connected to the proximal end of the puncture sheath and two or more hemostatic valves to form two or more instrument channels.

[0016] According to some embodiments of this application, both the hemostatic valve and the connector are made of medical-grade plastics, including polycarbonate or polypropylene. The hemostatic valve includes a self-sealing silicone gasket with a Shore hardness of 40–60.

[0017] According to some embodiments of this application, the proximal end of the puncture sheath is connected to an integrated hemostatic valve having two or more access channels via the integral multi-channel connector, forming two or more instrument access channels. Alternatively,

[0018] The two ends of the connector are respectively connected to the proximal end of the puncture sheath and two or more hemostatic valves, forming two or more instrument access routes.

[0019] The multi-channel connector is connected to the puncture sheath by thread, adhesive, or integral injection molding.

[0020] Both the integrated multi-channel connector and the split multi-channel connector include a self-sealing silicone pad.

[0021] According to some embodiments of this application, the number of self-sealing silicone pads is at least one, and the self-sealing silicone pads are provided with slits, the number of which can be one or more.

[0022] The slit is configured to open as the instrument passes through, wrap around the instrument surface to prevent blood backflow, and close after the instrument is withdrawn.

[0023] The integrated multi-channel connector includes at least two self-sealing silicone pads, and the self-sealing silicone pads include at least two seams.

[0024] According to some embodiments of this application, the upper and / or lower surfaces of the self-sealing silicone pad are provided with grooves, and the corresponding hemostatic valve body or gasket in contact with the self-sealing silicone pad is provided with a boss, thereby stabilizing the self-sealing silicone pad.

[0025] The hemostatic valve on the split-type multi-channel connector includes at least one of the self-sealing silicone pads, the self-sealing silicone pads including a slit.

[0026] According to some embodiments of this application, the connector is provided with at least two independent instrument channels, the distance between the independent instrument channels is 0.5cm to 1.5cm, and the gasket in the integrated multi-channel connector is provided with two independent openings, which are respectively connected to the two independent instrument channels.

[0027] The seam of the self-sealing silicone pad is connected to the instrument channel within the multi-channel connector.

[0028] The hemostatic valve cap and the hemostatic valve body are connected by threads. The self-sealing gasket and the gasket are pressed onto the hemostatic valve body by the inner boss of the hemostatic valve cap, so as to realize the function of a multi-channel connector.

[0029] The Y-shaped connector of the split-type multi-channel connector has an included angle of 0° to 70° between its two independent instrument channels.

[0030] The two independent instrument channels of the split-type multi-channel connector are symmetrically distributed on both sides of the main channel, with a length of 1cm to 3cm.

[0031] The puncture sheath is made of pure polymer material or multi-layer braided tubing, such as high-density polyethylene or Pebax tubing.

[0032] According to some embodiments of this application, the puncture sheath is made of pure polymer material or multi-layer braided tube, and the outer diameter of the puncture sheath is 5Fr to 12Fr.

[0033] The end of the puncture sheath is chamfered at an angle of 15° to 45°, and the diameter of the end of the puncture sheath is reduced, with the reduced diameter being slightly smaller than that of the sheath body and having a smooth transition.

[0034] The puncture sheath bend is located at the end of the puncture sheath tube and is manufactured using an integral molding process with the puncture sheath tube. The length of the puncture sheath bend is 0.5cm to 2cm, the angle is 10° to 60°, and the inner wall is a smooth arc shape.

[0035] According to some embodiments of this application, the multi-access vascular puncture sheath further includes a direction indicator for indicating the orientation of the puncture sheath bend within the blood vessel, the direction indicator comprising any one or a combination of the following:

[0036] A directional marker is provided on the proximal end of the puncture sheath, the integrated multi-channel connector, or the split multi-channel connector. The shape, color, or position of the directional marker indicates the orientation of the puncture sheath bend.

[0037] The hemostatic valve is marked with different colors on the split multi-channel connector, and the position of the different color marks corresponds to the orientation of the puncture sheath bend.

[0038] According to some embodiments of this application, the hanging device is sleeved on the outside of the puncture sheath and includes a disc body;

[0039] The inner side of the disc is provided with a damping structure, which is made of silicone pads;

[0040] The disk body is provided with hanging holes, the diameter of which is 1mm to 4mm, and there are 2 or 4 hanging holes symmetrically distributed on the disk body.

[0041] The pressure extension tube is made of transparent medical PVC or thermoplastic polyurethane tubing, with an outer diameter of 3mm to 5mm and a length of 10cm to 30cm.

[0042] The tee consists of a valve body and a valve core. The valve body is a polycarbonate "T" shaped structure. The valve core can rotate 360° and is coated with medical grease. The gap between the valve core and the valve body is ≤0.05mm, and a silicone sealing ring is provided on the contact surface.

[0043] According to some embodiments of this application, the multi-channel connector is made of polycarbonate or polypropylene material;

[0044] The main channel length of the multi-channel connector is 1cm to 3cm;

[0045] Two independent instrument channels are symmetrically distributed on both sides of the main channel, with a length of 1cm to 3cm.

[0046] The technical solution of this utility model has the following advantages:

[0047] 1) The puncture sheath has a curved design at the end, which makes it easy for doctors to guide the puncture sheath towards the brachiocephalic branch of the aorta or the left carotid artery branch under ultrasound guidance. It has excellent ultrasound guidance and facilitates the subsequent delivery of the sheath and embolization protector to the corresponding position under ultrasound guidance.

[0048] 2) The puncture sheath adopts a multi-pathway design, which can achieve multiple pathways through a single puncture sheath tube and release multiple embolization protectors at the same time, avoiding excessive harm to the patient.

[0049] 3) The puncture sheath bend adopts a one-piece molded smooth arc-shaped inner wall, combined with the low ultrasound reflection characteristics of Pebax material, which can reduce ultrasound signal scattering, allowing doctors to clearly identify the direction of the bend in the ultrasound image, accurately align it with the brachiocephalic trunk of the aorta or the left carotid artery branch, and achieve precise positioning in the absence of an X-ray machine. Attached Figure Description

[0050] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this specification and, together with the description, serve to explain the principles of this specification.

[0051] Figure 1 This is a schematic diagram of the structure of Example 1 of the multi-pathway vascular puncture sheath;

[0052] Figure 2 This is a schematic diagram of the structure of Example 2 of the multi-pathway vascular puncture sheath;

[0053] Figure 3 Cross-sectional view of the hemostatic valve cap.

[0054] Figure 4 Cross-sectional view of the hemostasis valve body.

[0055] Figure 5 This is a cross-sectional view of a self-sealing gasket.

[0056] Explanation of reference numerals in the attached figures:

[0057] 1-Multi-channel connector, 11-Hemostatic valve, 111-Self-sealing gasket, 1111-Self-sealing gasket groove, 1112-Seal, 112-Hemostatic valve cap, 1121-Hemostatic valve cap boss, 113-Hemostatic valve body, 1131-Hemostatic valve body boss, 114-Gasket, 1141-Gasket boss, 115-Directional indicator, 12-Connector, 2-Puncture sheath, 3-Hanger, 4-Puncture sheath elbow, 5-Pressure extension tube, 6-Tee, 7-Proximal end, 8-Distal end. Detailed Implementation

[0058] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore detailed descriptions of them will be omitted. Furthermore, the drawings are merely illustrative of this disclosure and are not necessarily drawn to scale.

[0059] Although relative terms such as "up" and "down" are used in this specification to describe the relative relationship of one component of an icon to another, these terms are used only for convenience, such as according to the orientation of the examples shown in the accompanying drawings. It is understood that if the device of the icon is flipped upside down, the component described as "up" will become the component described as "down." When a structure is "up" of another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.

[0060] The terms “a,” “one,” “the,” “the,” and “at least one” are used to indicate the presence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms “first,” “second,” and “third,” etc., are used only as markers and are not a limitation on the number of objects.

[0061] In this disclosure, terms such as "perpendicular" and "equal" refer to perpendicularity and equality within the range of process error, not absolute perpendicularity and equality. Process error can be within ±10% or ±5%. For example, perpendicularity between the horizontal direction and the second direction can be understood as the angle between the horizontal direction and the second direction being 90°±5°.

[0062] The robotic arm of the robot and the various parts of the humanoid robot including it provided in the embodiments of this disclosure will now be described in detail with reference to the accompanying drawings:

[0063] It should be noted that, for ease of description, this application defines the end of the puncture sheath 2 on which the multi-channel connector 1 is installed as the proximal end, and the end of the puncture sheath 2 away from the multi-channel connector 1 as the distal end.

[0064] Example 1:

[0065] like Figure 1As shown, Embodiment 1 of this application includes: a multi-channel connector 1, a hemostatic valve 11, a self-sealing silicone pad 111, a connector 12, a puncture sheath 2, a hanging device 3, a puncture sheath elbow 4, a pressure extension tube 5, and a tee 6.

[0066] Specifically, the multi-channel connector 1 is connected to the tee 6 via the pressure extension pipe 5.

[0067] The distal end of the multi-channel connector 1 is fixedly connected to the proximal end of the puncture sheath 2, so that the vascular puncture sheath can form two independent instrument channels for the delivery of the sheath and the embolization protector.

[0068] The hanging device 3 is set on the puncture sheath 2.

[0069] The multi-channel connector 1 is a split type, consisting of a hemostatic valve 11 and a connector 12. The connector 12 can be Y-type, U-type, V-type or W-type, etc., preferably a Y-type connector. The multi-channel connector 1 connects two hemostatic valves 11 through the connector 12.

[0070] Both the hemostatic valve 11 and the connector 12 are made of medical-grade plastics, including polycarbonate or polypropylene. The hemostatic valve 11 includes a self-sealing silicone gasket 111.

[0071] The two ends of the split-type multi-channel connector 1 are connected to the proximal end of the puncture sheath 2 and the two hemostatic valves 11, respectively, forming two independent instrument channels.

[0072] The multi-channel connector 1 and the puncture sheath 2 are connected by adhesive bonding.

[0073] The self-sealing silicone pad 111 has a slit that communicates with an independent instrument channel within the multi-channel connector 1. It is configured to open as an instrument passes through, wrap around the instrument surface to prevent blood backflow, and close after the instrument is withdrawn.

[0074] The connector 12 is Y-shaped, with an included angle of 0° to 70° between its two independent instrument channels, and the two independent instrument channels are symmetrically distributed on both sides of the main channel, with a length of 1cm to 3cm.

[0075] In this embodiment, the hemostatic valves on the multi-channel connector 1 are marked with different colors: the left hemostatic valve is blue and the right hemostatic valve is green. At this time, the puncture sheath bend is facing the aortic branch.

[0076] The puncture sheath 2 is made of Pebax material, and the end of the puncture sheath 2 is chamfered with an angle of 15° to 45°, preferably 30°. The end of the puncture sheath 2 is also tapered, with the tapered diameter being slightly smaller than that of the sheath body and having a smooth transition.

[0077] The outer diameter of the puncture sheath 2 is 5Fr to 12Fr, preferably 10Fr. "Fr" stands for "French Gauge", which is a special unit of measurement used in the field of medical devices (especially vascular interventional devices) to mark the outer diameter of tubular instruments.

[0078] The puncture sheath bend 4 is located at the end of the puncture sheath tube 2 and is manufactured in one piece with the puncture sheath tube 3. The length of the puncture sheath bend 4 is 0.5cm to 2cm, preferably 1cm, and the angle is 10° to 60°, preferably 30°. The inner wall is a smooth arc shape.

[0079] The hanging device 3 is set outside the puncture sheath 2, including a disc body and a silicone pad inside the disc body. The silicone pad has a Shore hardness of 40 to 60 degrees. The disc body of the hanging device 3 is provided with hanging holes with a diameter of 1 mm to 4 mm. There are 2 hanging holes, which are symmetrically distributed on the disc body.

[0080] The pressure extension tube 5 is made of transparent medical PVC tubing with an outer diameter of 3mm to 5mm and a length of 10cm to 30cm.

[0081] The tee consists of a valve body and a valve core. The valve body is a polycarbonate "T" shaped structure, and the valve core can rotate 360°. The surface is coated with medical grease, and the clearance between the valve core and the valve body is ≤0.05mm. A silicone sealing ring is provided on the contact surface.

[0082] Example 2:

[0083] like Figures 2-5 As shown, Embodiment 2 of this application comprises: 1-multi-channel connector, 11-hemostatic valve, 111-self-sealing gasket, 1111-self-sealing gasket groove, 1112-slit, 112-hemostatic valve cap, 1121-hemostatic valve cap boss, 113-hemostatic valve body, 1131-hemostatic valve body boss, 114-gasket, 1141-gasket boss, 115-direction indicator, 2-puncture sheath, 3-hanger, 4-puncture sheath elbow, 5-pressure extension tube, and 6-tee.

[0084] Specifically, the multi-channel connector 1 is connected to the tee 6 via the pressure extension pipe 5.

[0085] The distal end of the multi-channel connector 1 is fixedly connected to the proximal end of the puncture sheath 2, so that the vascular puncture sheath can form two independent instrument channels for the delivery of the sheath and the embolization protector.

[0086] The hanging device 3 is set on the puncture sheath 2.

[0087] The multi-channel connector 1 is an integrated hemostatic valve, comprising a self-sealing silicone gasket 111, a hemostatic valve cap 112, a hemostatic valve body 113, a gasket 114, and a direction indicator 115. The multi-channel connector 1 has two channels.

[0088] The hemostatic valve cap 112, hemostatic valve body 113, and gasket 114 are all made of medical plastics, including polycarbonate or polypropylene, etc. The self-sealing silicone gasket 111 is made of medical silicone with a Shore hardness of 40 to 60.

[0089] The proximal end of the puncture sheath 2 is connected to an integrated hemostatic valve with two access channels via an integral multi-access connector 1, forming two instrument access channels.

[0090] The multi-channel connector 1 and the puncture sheath 2 are connected by adhesive bonding.

[0091] The multi-channel connector 1 includes a self-sealing silicone pad 111 with two slits 1112. These slits 1112 are configured to open when an instrument passes through, covering the instrument surface to prevent blood backflow, and close after the instrument is removed. The upper and / or lower surfaces of the self-sealing silicone pad are provided with grooves 1111. Correspondingly, the hemostatic valve body 113 and gasket 114, which contact the silicone pad, are provided with a hemostatic valve body boss 1131 and a gasket boss 1141 to ensure stable installation of the self-sealing silicone pad.

[0092] The multi-channel connector 1 has two independent instrument channels, the distance between the two independent instrument channels is 0.5cm to 1.5cm, and the length of the instrument channel of the multi-channel connector 1 is 1cm to 3cm.

[0093] like Figure 5 As shown, the gasket 114 inside the multi-channel connector 1 has two independent ports, which are respectively connected to two independent instrument channels.

[0094] The seam of the self-sealing silicone pad 111 is connected to the instrument channel within the multi-channel connector 1.

[0095] The hemostatic valve cap 112 and the hemostatic valve body 113 are connected by threads. The two self-sealing gaskets 111 and two gaskets 114 are pressed onto the hemostatic valve body by the inner boss 1121 of the hemostatic valve cap 112, so as to realize the function of the multi-channel connector 1.

[0096] The directional marker 115, located on the multi-access connector, indicates the orientation of the puncture sheath bend toward the aortic branch.

[0097] The puncture sheath 2 is made of Pebax material, and the end of the puncture sheath 2 is chamfered with an angle of 15° to 45°, preferably 30°. The end of the puncture sheath 2 is also tapered, with the tapered diameter being slightly smaller than that of the sheath body and having a smooth transition.

[0098] The puncture sheath bend 4 is located at the end of the puncture sheath tube 2 and is manufactured integrally with the puncture sheath tube 2. The length of the puncture sheath bend 4 is 0.5cm to 2cm, preferably 1cm, and the angle is 10° to 60°, preferably 30°. The inner wall is a smooth arc shape. The outer diameter of the puncture sheath tube 2 is 5Fr to 12Fr, preferably 10Fr.

[0099] The hanging device 3 is set outside the puncture sheath 2, including a disc body and a silicone pad inside the disc body. The silicone pad has a Shore hardness of 40 to 60 degrees. The disc body of the hanging device 3 is provided with hanging holes with a diameter of 1 mm to 4 mm. There are 2 hanging holes, which are symmetrically distributed on the disc body.

[0100] The pressure extension tube 5 is made of transparent medical PVC tubing with an outer diameter of 3mm to 5mm and a length of 10cm to 30cm.

[0101] The tee consists of a valve body and a valve core. The valve body is a polycarbonate "T" shaped structure, and the valve core can rotate 360°. The surface is coated with medical grease, and the clearance between the valve core and the valve body is ≤0.05mm. A silicone sealing ring is provided on the contact surface.

[0102] Finally, the above preferred embodiments are only used to illustrate the technical solutions of this application and are not restrictive. Although this application has been described in detail, those skilled in the art should understand that changes in form and detail can be made without departing from the scope defined by the claims of this application. The dimensions in the drawings are not related to the actual object; the actual object dimensions can be set according to actual needs.

[0103] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. A multi-pathway vascular puncture sheath, characterized in that, Includes multi-channel connectors, puncture sheaths, hanging devices, puncture sheath elbows, pressure extension tubes, and tees; The multi-channel connector is connected to the tee via the pressure extension tube; The distal end of the multi-channel connector is fixedly connected to the proximal end of the puncture sheath, so that the puncture sheath can form at least two independent instrument channels for the delivery of the puncture sheath and the embolization protector. The hanging device is sleeved on the puncture sheath.

2. The multi-pathway vascular puncture sheath according to claim 1, characterized in that, The multi-channel connector can be an integral or separate structure.

3. The multi-pathway vascular puncture sheath according to claim 2, characterized in that, The integrated multi-channel connector is an integrated hemostatic valve, including a self-sealing silicone pad, a hemostatic valve cap, a hemostatic valve body, and a gasket; The integrated multi-channel connector has two or more channels. The proximal end of the puncture sheath is connected to the integrated multi-channel connector to form two or more instrument channels. The gasket has two independent openings that are respectively connected to the instrument channels.

4. The multi-pathway vascular puncture sheath according to claim 2, characterized in that, The split-type multi-channel connector includes a hemostatic valve and a connector, which is Y-shaped, U-shaped, V-shaped or W-shaped. Both ends of the connector are connected to the proximal end of the puncture sheath and two or more hemostatic valves, respectively, to form two or more instrument channels.

5. The multi-pathway vascular puncture sheath according to claim 3, characterized in that, The number of self-sealing silicone pads is at least one, and the self-sealing silicone pads have slits, the number of which can be one or more.

6. The multi-pathway vascular puncture sheath according to claim 5, characterized in that, The self-sealing silicone pad has grooves on its upper and / or lower surfaces, and the corresponding hemostatic valve body or gasket that contacts the self-sealing silicone pad has protrusions, thereby stabilizing the self-sealing silicone pad.

7. The multi-pathway vascular puncture sheath according to claim 4, characterized in that, The connector has at least two independent instrument channels, the distance between the independent instrument channels is 0.5cm to 1.5cm, and the included angle is 0° to 70°.

8. The multi-pathway vascular puncture sheath according to claim 1, characterized in that, The puncture sheath is made of pure polymer material or multi-layer braided tube, and the outer diameter of the puncture sheath is 5Fr to 12Fr. The end of the puncture sheath is chamfered with an angle of 15° to 45°. The diameter of the end of the puncture sheath is reduced, with the diameter of the reduced end being slightly smaller than that of the sheath body and having a smooth transition. The puncture sheath bend is located at the end of the puncture sheath tube and is manufactured using an integral molding process with the puncture sheath tube. The length of the puncture sheath bend is 0.5cm to 2cm, the angle is 10° to 60°, and the inner wall is a smooth arc shape.

9. The multi-pathway vascular puncture sheath according to claim 4, characterized in that, It also includes a directional marker for indicating the orientation of the puncture sheath bend within the blood vessel, the directional marker comprising any one or a combination of the following: A directional marker is provided on the proximal end of the puncture sheath, the integrated multi-channel connector, or the split multi-channel connector. The shape, color, or position of the directional marker indicates the orientation of the puncture sheath bend. The hemostatic valve is marked with different colors on the split multi-channel connector, and the position of the different color marks corresponds to the orientation of the puncture sheath bend.

10. The multi-pathway vascular puncture sheath according to claim 1, characterized in that, The hanging device is sleeved on the outside of the puncture sheath, and the hanging device includes a disc body; The inner side of the disc is provided with a damping structure, which is made of silicone pads; The disk body is provided with hanging holes, the diameter of which is 1mm to 4mm, and there are 2 or 4 hanging holes symmetrically distributed on the disk body.

11. The multi-pathway vascular puncture sheath according to claim 1, characterized in that, The multi-channel connector is made of polycarbonate or polypropylene. The main channel length of the multi-channel connector is 1cm to 3cm; Two independent instrument channels are symmetrically distributed on both sides of the main channel, with a length of 1cm to 3cm.

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