Load-carrying conveying device and proximal anastomosis auxiliary system

Abstract

The present invention relates to the field of medical device technology, and discloses a carrier conveying device and a proximal anastomosis auxiliary system. The carrier upper shell of the carrier is covered with the carrier base, and the conveying tube of the conveyor can be fixed and buckled in the carrier. The carrier base has two guide reinforcement ribs symmetrically arranged in an "eight-shaped" shape, with one end facing the guide groove being a trumpet-shaped opening to accurately guide the conveying tube; the space between the other end of the guide reinforcement rib and the positioning portion is used to place a hemostatic parasol; the two guide reinforcement ribs effectively prevent excessive deformation of the carrier base during the injection molding cooling process to improve the flatness; two curling petals are flexibly connected by a hinge section and engage with relative motion, so that the curling surfaces are relatively close to each other, pushing the hemostatic parasol toward the center and curling it into shape; the conveying tube slides relative to the guide groove to extend from between the two guide reinforcement ribs and be placed outside the hemostatic parasol. After the hemostatic parasol is retracted in the conveying tube, the conveyor is inserted through the channel on the blood vessel and the hemostatic parasol is delivered into the blood vessel for occlusion.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a load-carrying and conveying device and a proximal anastomosis auxiliary system. Background Art

[0002] Proximal vascular anastomosis surgery is mainly used in coronary artery bypass surgery. Its main advantage is that the bypass surgery can be completed without stopping the heart, thereby improving surgical efficiency and reducing patient pain.

[0003] Ancillary equipment for anastomosis surgery primarily includes a punch, a delivery tube, and a hemostatic parachute assembly. The punch's primary function is to perforate the vessel wall. The delivery tube's primary functions include: delivering the curled hemostatic parachute into the delivery tube without damaging the parachute structure; and finally, delivering the parachute into the vessel along the hole created by the punch. The hemostatic parachute assembly primarily provides temporary occlusion at the vessel opening to prevent blood splattering while providing space for bypass suturing.

[0004] Currently, the technical difficulty lies in how to better curl the hemostatic parachute into shape, and it is difficult to accurately control the relative movement of the delivery tube and the hemostatic parachute, and the efficiency of curling the hemostatic parachute into shape is low. Summary of the Invention

[0005] The purpose of the present invention is to provide a load-carrying conveying device and a proximal anastomosis auxiliary system.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] The load-carrying conveying device comprises:

[0008] A conveyor, the conveyor comprising a conveying pipe;

[0009] The carrier comprises a carrier upper shell, a carrier base and a curling switch; the carrier base is provided with a positioning portion, a guide groove and two guide reinforcement ribs, the two guide reinforcement ribs are symmetrically arranged in an "eight-shaped" shape, and the two guide reinforcement ribs are trumpet-shaped openings at one end facing the guide groove, and the other end of the guide reinforcement rib is spaced apart from the positioning portion; the conveying tube is selectively placed in the guide groove, and the end of the conveying tube is clamped between the two guide reinforcement ribs; the curling switch is clamped to the carrier base, and the curling switch comprises an integral hinge section and two curling petals, the two curling petals are flexibly connected by the hinge section, the two curling petals are symmetrically arranged, and the curling petals are provided with curling surfaces, and the curling petals can move relative to each other to make the curling surfaces relatively close to or away from each other; the carrier upper shell covers the carrier base to fix the conveyor and the carrier.

[0010] As an optional technical solution for the load-carrying and conveying device, the curled petal is provided with a limiting portion, and the limiting portion selectively abuts against the relative outer side of the guide reinforcement rib.

[0011] As an optional technical solution for the load-carrying and conveying device, one end of the guide reinforcement rib close to the positioning portion is protruded from the conveying pipe.

[0012] As an optional technical solution for the carrying and conveying device, the part of the guide reinforcement rib protruding from the conveying pipe is provided with a convergence slope, and the two convergence slopes are inclined toward the end of the conveying pipe so that the end of the two convergence slopes facing the positioning part is a trumpet-shaped opening.

[0013] As an optional technical solution for the load-carrying and conveying device, the curling surface is slidably placed on the curling petal, and the curling switch has an initial state and an in-place state. When the curling switch is in the initial state, the two curling petals are set at a preset angle; when the curling switch is in the in-place state, the sliding directions of the two curling surfaces are parallel, and the axial direction of the conveying tube coincides with the symmetry line of the two curling petals.

[0014] As an optional technical solution of the carrying and conveying device, the curling surface is fixed to the curling petal along the sliding direction by an elastic member.

[0015] As an optional technical solution for the carrying and conveying device, control grooves are provided on the relatively outer sides of the curled petals.

[0016] As an optional technical solution of the carrying and conveying device, the curling switch is detachably connected to the carrying base.

[0017] A proximal anastomosis assist system comprises a carrying and conveying device as described in any one of the above items, and further comprises a hemostatic parachute, wherein the hemostatic parachute is abutted and placed between the guide reinforcement rib and the positioning portion. When the curling switch is in the initial state, a gap is provided between the two curling surfaces and the hemostatic parachute; when the curling switch is converted to the in-position state, the curling surfaces push the hemostatic parachute to curl and retract, and the conveying tube slides relative to the guide groove to extend from between the two guide reinforcement ribs and be sleeved outside the hemostatic parachute.

[0018] As an optional technical solution for the proximal anastomosis auxiliary system, the proximal anastomosis auxiliary system also includes a puncher, which includes a handle, a punch knife and a puncture needle unit. The punch knife can be retractably placed in the handle, and the puncture needle unit is coaxially placed in the punch knife. The puncture needle unit includes a needle rod and a spring needle head, and the spring needle head is selectively exposed from the punch knife; the spring needle head is provided with two or more spring sliding links, and the spring sliding links are arranged at intervals along the circumference of the needle rod, and the spring sliding links include a sliding section, an inverted angle section and an inverted angle section two, and the inverted angle section two is rotatably connected to the spring needle head and extends distally. The cam is bent in the direction away from the needle rod, and the sliding section is connected to the needle rod for sliding along the axial direction of the needle rod. One end of the inverted angle section is rotatably connected to the sliding section and bent in the direction away from the needle rod. The other end of the inverted angle section is rotatably connected to the inverted angle section 2, and the acute angle sandwiched between the inverted angle section 1 and the inverted angle section 2 is an inverted angle, and the inverted angle faces in the direction opposite to the punching direction for piercing punching fragments; when the punch knife extends out of the handle, the shrapnel needle contacts the blood vessel, so that the inverted angle section 2 moves closer to the needle rod; when the punch knife retracts the handle, the inverted angle section 2 is unfolded away from the needle rod.

[0019] Beneficial effects of the present invention:

[0020] The carrying and conveying device provided by the present invention includes a conveyor and a carrier. The carrier's upper shell is covered by a carrier base, capable of securing and fastening the conveying tube of the conveyor within the carrier. The carrier base has two guide ribs symmetrically arranged in an "eight-shaped" pattern. The ends of the two guide ribs facing the guide groove are trumpet-shaped, allowing for precise guidance of the conveying tube. The other ends of the guide ribs are spaced apart from the positioning portion, with the space between them being used to place a hemostatic parachute. The two guide ribs can also effectively prevent the area where the hemostatic parachute is placed from excessive shrinkage and deformation during the injection molding cooling process, thereby improving flatness. The two curling petals of the curling switch are flexibly connected by a hinge section. Curling surfaces are provided on opposite sides of the two curling petals, and the curling petals can move relative to each other to engage and move the curling surfaces closer or further apart. In order to curl and shape the hemostatic parachute, the two curling surfaces approach each other, gradually pushing the parachute toward the center and curling it.

[0021] The proximal anastomosis assist system provided by the present invention includes the aforementioned carrying and conveying device, as well as a hemostatic parasol. The hemostatic parasol is positioned abuttingly between the guide reinforcement ribs and the positioning portion. When the curling switch is in the initial state, a gap is formed between the two curling surfaces and the parasol. When the curling switch is switched to the in-position state, the curling surfaces push the parasol to curl and retract, and the conveying tube slides relative to the guide groove to extend from between the two guide reinforcement ribs and fit over the parasol. The parasol is curled and formed to a predetermined size. Without damaging the parasol structure, the carrier and conveyor cooperate to deliver the formed parasol into the conveying tube. After the parasol is collapsed within the conveying tube, the conveyor is removed from the carrying and conveying device. Finally, the conveyor is inserted through the orifice of the blood vessel and delivers the parasol into the blood vessel for occlusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a load-carrying and conveying device provided in a specific embodiment of the present invention;

[0023] Figure 2 It is a front view of the carrying and conveying device (with the carrying upper shell hidden) provided in a specific embodiment of the present invention;

[0024] Figure 3 It is a structural schematic diagram of a conveyor of a load-carrying conveying device provided in a specific embodiment of the present invention;

[0025] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0026] Figure 5 It is a structural schematic diagram of a carrying base of a carrying and conveying device provided in a specific embodiment of the present invention;

[0027] Figure 6 2 is a schematic structural diagram of a curling switch of a load-carrying conveyor device provided in a specific embodiment of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the puncher (with the handle partially hidden) of the proximal anastomosis auxiliary system provided in a specific embodiment of the present invention.

[0029] Figure 8 Schematic diagram of the structure of the puncture needle unit of the proximal anastomosis auxiliary system provided by a specific embodiment of the present invention;

[0030] Figure 9 yes Figure 8 Enlarged view of point B in the middle;

[0031] In the picture:

[0032] 100, conveyor; 110, conveying pipe;

[0033] 200, carrier; 210, carrier upper shell; 220, carrier base; 221, positioning portion; 222, guide groove; 223, guide reinforcement rib; 2231, gathering slope;

[0034] 230, curling switch; 231, hinge section; 232, curling flap; 2321, curling surface; 2322, elastic member; 2323, limiting portion; 2324, control slot;

[0035] 10. Carrying and conveying device; 20. Hemostatic parachute;

[0036] 30. Punch; 310. Handle; 320. Punch knife; 330. Punch needle unit; 331. Needle rod; 332. Shrapnel needle; 333. Shrapnel sliding connecting rod; 3331. Sliding section; 3332. Inverted hanging angle section 1; 3333. Inverted hanging angle section 2. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0038] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0039] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0040] In the description of this embodiment, terms such as "upper," "lower," "right," and "left" are used to refer to positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0041] like Figures 1 to 9 As shown, the present invention discloses a carrier delivery device 10, comprising a conveyor 100 and a carrier 200. The conveyor 100 includes a delivery tube 110; the carrier 200 includes a carrier upper shell 210, a carrier base 220, and a curling switch 230. The carrier upper shell 210 and the carrier base 220 cover and secure the conveyor 100 and the carrier 200. The main functions of the carrier delivery device 10 include using the carrier 200 and the conveyor 100 to place a hemostatic parachute 20 into the delivery tube 110. The conveyor 100 is used to insert the hemostatic parachute 20 into the perforated hole and deliver it into the blood vessel for occlusion.

[0042] The supporting base 220 itself has a guide groove 222 for placing the conveying tube 110. In order to enable the supporting conveying device 10 to achieve better overall use effect and control the cost of production and improvement, only two guide reinforcement ribs 223 are added to the supporting base 220 to meet the four excellent effects of precise assembly, strengthened structure, output consistency and high efficiency.

[0043] The two guide reinforcement ribs 223 are symmetrically arranged in an "eight-shaped" configuration. The ends of the two guide reinforcement ribs 223 facing the guide groove 222 are trumpet-shaped openings, which can achieve precise guidance of the delivery tube 110. In this embodiment, there are two limit fixing clamping points within the guide groove 222 to determine the movement mode of the delivery tube 110. However, considering that the delivery tube 110 is generally a hollow, thin-walled member, the centering may deviate during movement. Therefore, an "eight-shaped" structure is designed at the farthest end of the delivery tube 110 where it enters the guide groove 222 - two guide reinforcement ribs 223. The delivery tube 110 is selectively placed within the guide groove 222, and the end of the delivery tube 110 is clamped between the two guide reinforcement ribs 223, which can further ensure the precise guidance of the delivery tube 110.

[0044] The support base 220 is also provided with a positioning portion 221. The other end of a guide reinforcement rib 223 is spaced apart from the positioning portion 221. The space between the guide reinforcement rib 223 and the positioning portion 221 is used to place the hemostatic parasol 20. The area on the support base 220 where the hemostatic parasol 20 is placed is a relatively large flat surface. During the injection molding cooling process, due to differences in cooling speeds in areas of different thicknesses, this area may not meet the required flatness, thereby affecting the curling operation of the hemostatic parasol 20 and causing curling failure. To address this issue, two guide reinforcement ribs 223 forming an "eight-shaped" structure are provided in this area of ​​the support base 220 to improve flatness and effectively prevent excessive shrinkage and deformation in this area.

[0045] To curl and reshape the hemostatic parachute 20, a curling switch 230 is mounted on the supporting base 220. The curling switch 230 includes an integral hinge section 231 and two curling petals 232. The two curling petals 232 are flexibly connected by the hinge section 231. The two curling petals 232 are symmetrically arranged and can rotate relative to each other. Curling surfaces 2321 are provided on opposite sides of the two curling petals 232. The curling petals 232 can move relative to each other and engage to move the curling surfaces 2321 closer or further apart. When the curling surfaces 2321 move closer, they gradually push the hemostatic parachute 20 toward the center, causing it to curl.

[0046] In this embodiment, the curled petals 232 are provided with limiting portions 2323, which can selectively abut the opposite outer sides of the guide reinforcement rib 223. When the curled petals 232 are relatively close and engaged, the curled surfaces 2321 gradually move closer together until the limiting portions 2323 abut the outer sides of the guide reinforcement rib 223. At this point, the pushing directions of the two curled petals 232 are opposite and perpendicular to the axial direction of the delivery tube 110, and the hemostatic parachute 20 has a nearly helical tubular structure. When the curling switch 230 is used to curl the hemostatic parachute 20, the force pushing the edge of the hemostatic parachute 20 to curl inward may not be completely consistent due to individual differences between people. To prevent the hemostatic parachute 20 from over-curling and causing failure, it is necessary to design such an "eight-shaped" structure at the extreme position of the movement engagement of the curling switch 230. Therefore, the cooperation of the limit portion 2323 and the guide reinforcement rib 223 can effectively limit the curling switch 230 and prevent the hemostatic parachute 20 from over-curling, thereby ensuring the precise position of the curling switch 230 each time it is operated.

[0047] Specifically, one end of the guide reinforcement rib 223 near the positioning portion 221 is protruded from the delivery tube 110. During the process of curling the unfolded hemostatic parachute 20 into a spiral tube shape, the delivery tube 110 carrying the delivery device 10 always maintains its end portion sunken into the relative position of the two guide reinforcement ribs 223. This arrangement ensures that the relative positioning of the hemostatic parachute 20 to the guide reinforcement rib 223 and the positioning portion 221 is not affected, and the edge of the hemostatic parachute 20 with an arc shape after unfolding will not interfere with the delivery tube 110, thereby preventing the hemostatic parachute 20 from being deformed by force near the edge of the delivery tube 110. During the curling process, the hemostatic parachute 20 tends to move back and forth along the curling center. However, a positioning portion 221 is provided at one end of the hemostatic parachute 20 to restrict movement in one direction. Therefore, the hemostatic parachute 20 will only move toward the end closest to the delivery tube 110. Since the delivery tube 110 is thin-walled and has a small contact area with the hemostatic parachute 20, if the hemostatic parachute 20 deforms upon contact with the delivery tube 110 before it is successfully curled, it will be difficult to successfully curl the hemostatic parachute 20. Therefore, it is necessary to design an "eight-shaped" structure with two guide reinforcement ribs 223 protruding from the delivery tube 110 to prevent the hemostatic parachute 20 from contacting the delivery tube 110 prematurely. This effectively prevents the hemostatic parachute 20 from excessively moving toward the delivery tube 110 during the curling process, thereby ensuring efficient curling of the hemostatic parachute 20.

[0048] Furthermore, the portion of the guide reinforcement rib 223 protruding from the delivery tube 110 is provided with a gathering slope 2231. The two gathering slopes 2231 are inclined toward the end of the delivery tube 110, so that the ends of the two gathering slopes 2231 facing the positioning portion 221 are open in a trumpet shape. This arrangement guides the hemostatic parachute 20 to curl and tighten toward the middle, and can further enable the curling switch 230 to efficiently curl the hemostatic parachute 20 into shape.

[0049] The present invention discloses a proximal anastomosis assist system, comprising the aforementioned carrying and conveying device 10 and a hemostatic parachute 20. The hemostatic parachute 20 is positioned between a guide reinforcement rib 223 and a positioning portion 221. When the curling switch 230 is in its initial state, a gap is formed between the two curling surfaces 2321 and the hemostatic parachute 20. When the curling switch 230 is switched to its in-position state, the curling surfaces 2321 push the hemostatic parachute 20 to curl and collapse, and the delivery tube 110 slides relative to the guide groove 222, extending from between the two guide reinforcement ribs 223 and sheathed over the hemostatic parachute 20. The hemostatic parachute 20 is curled and formed to a predetermined size. Without damaging the structure of the hemostatic parachute 20, the formed hemostatic parachute 20 is introduced into the delivery tube 110. After the hemostatic parachute 20 is collapsed within the delivery tube 110, the delivery device 100 is removed from the carrying and conveying device 10. Finally, the delivery device 100 is inserted through the orifice of the blood vessel and delivers the hemostatic parachute 20 into the blood vessel.

[0050] In this embodiment, the curling surface 2321 slides onto the curling petals 232. The curling switch 230 has an initial state and a fully engaged state. When the curling switch 230 is in the initial state, the two curling petals 232 are arranged at a predetermined angle. When the curling switch 230 is in the fully engaged state, the sliding directions of the two curling surfaces 2321 are parallel and axially aligned with the delivery tube 110, resulting in a more standardized curling effect for the hemostatic parasol 20. Furthermore, the axial direction of the delivery tube 110 coincides with the symmetry line of the two curling petals 232, allowing the two curling petals 232 to move and engage in position. Theoretically, to curl the hemostatic parasol 20 into a perfect spindle shape, the curling surface 2321 of the curling switch 230 should cover the center of the parasol 20. To ensure that the curled parasol 20 can be effectively inserted into the delivery tube 110 and stably held by the delivery tube 110, the front end of the delivery tube 110 should also extend past the center of the parasol 20. However, if the curling petal 232 is removed, the hemostatic paraffin 20 will deform or fall apart. If the delivery tube 110 fails to fit halfway around the hemostatic paraffin 20, there is no guarantee that the hemostatic paraffin 20 can continue to stably enter the delivery tube 110. To resolve this contradiction, the curling surface 2321 is designed to be movable. While ensuring efficient curling, the curling surface 2321 and the delivery tube 110 move forward and backward together, avoiding the loss of the deformable freedom of the already curled hemostatic paraffin 20 and ensuring that the curled hemostatic paraffin 20 can be effectively loaded into the delivery tube 110.

[0051] Furthermore, the curling surface 2321 is fixed to the curling flap 232 along the sliding direction by the elastic member 2322 , which can keep the two linked while ensuring the mobility of the curling surface 2321 relative to the curling flap 232 , thereby achieving automatic resetting of the curling surface 2321 .

[0052] Illustratively, a control slot 2324 is provided on the relative outer side of the curling petal 232 , and the control slot 2324 facilitates the operator to hold the curling switch 230 , contact the control slot 2324 and control the movement engagement process of the curling switch 230 .

[0053] In this embodiment, the curling switch 230 is detachably connected to the carrying base 220 . This design can improve the assembly flexibility of the carrying and conveying device 10 and facilitate local maintenance and replacement.

[0054] like Figures 7 to 9The proximal anastomosis auxiliary system also includes a punch 30, which includes a handle 310, a punch knife 320 and a puncture needle unit 330. The punch knife 320 is retractably placed in the handle 310, and the puncture needle unit 330 is coaxially placed in the punch knife 320. The puncture needle unit 330 includes a needle rod 331 and a spring needle head 332. The spring needle head 332 is selectively exposed from the punch knife 320; the spring needle head 332 is provided with two or more spring sliding links 333, and the spring sliding links 333 are arranged at intervals along the circumference of the needle rod 331. The spring sliding links 333 include a sliding section 3331, an inverted angle The first section 3332 and the second inverted angle section 3333, the second inverted angle section 3333 is rotatably connected to the spring needle head 332 and bends in the direction away from the needle rod 331, the sliding section 3331 is slidably connected to the needle rod 331 along the axial direction of the needle rod 331, one end of the first inverted angle section 3332 is rotatably connected to the sliding section 3331 and bends in the direction away from the needle rod 331, the other end of the first inverted angle section 3332 is rotatably connected to the second inverted angle section 3333, and the acute angle sandwiched between the first inverted angle section 3332 and the second inverted angle section 3333 is an inverted angle, which faces in the opposite direction to the punching direction and is used to pierce punching fragments.

[0055] When the punch knife 320 is extended from the handle 310, the shrapnel needle 332 contacts the blood vessel and penetrates into it at the same time. In the resistance of puncturing the blood vessel, the second section 3333 of the inverted angle will be squeezed close to the needle rod 331. When the shrapnel needle 332 penetrates, the shrapnel sliding connecting rod 333 retracts to reduce the cross-sectional area of ​​penetration, making it easier for the shrapnel needle 332 to penetrate, puncturing the blood vessel with minimal puncture force, accurately punching and alleviating the patient's pain; after penetration, the shrapnel sliding connecting rod 333 naturally expands, and the second section 3333 of the inverted angle is unfolded away from the needle rod 331. After the punch knife 320 cuts and punches the blood vessel wall, the inverted angle can effectively hold the blood vessel wall fragments that fall from the hole and bring them out of the blood vessel, avoiding the risk of residual blood vessel wall fragments causing thrombosis.

[0056] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. The carrying and conveying device is characterized in that: include: A conveyor (100), wherein the conveyor (100) includes a conveying pipe (110); A carrier (200), the carrier (200) comprising a carrier upper shell (210), a carrier base (220) and a curling switch (230); The bearing base (220) is provided with a positioning portion (221), a guide groove (222) and two guide reinforcement ribs (223), the two guide reinforcement ribs (223) are symmetrically arranged in an "eight-shaped" shape, one end of the two guide reinforcement ribs (223) facing the guide groove (222) is trumpet-shaped and open, the other end of the guide reinforcement rib (223) is spaced apart from the positioning portion (221), and the hemostatic parachute (20) is placed between the guide reinforcement rib (223) and the positioning portion (221); the delivery tube (110) is selectively placed in the guide groove (222), and the end of the delivery tube (110) is placed in the guide channel between the two guide reinforcement ribs (223); The curling switch (230) is clamped to the bearing base (220), and the curling switch (230) comprises an integral hinge section (231) and two curling petals (232), the two curling petals (232) being flexibly connected via the hinge section (231), the two curling petals (232) being symmetrically arranged, the curling petals (232) being provided with a curling surface (2321), and the curling petals (232) being capable of relative movement so that the curling surface (2321) is relatively close to or away from each other; The curling surface (2321) is used to push the hemostatic parachute (20) to curl and retract, and during the curling process of the hemostatic parachute (20), the end of the guide reinforcing rib (223) close to the positioning portion (221) is used to contact the hemostatic parachute (20) to limit and guide the hemostatic parachute (20); The carrying upper shell (210) covers the carrying base (220) to fix the conveyor (100) and the carrier (200).

2. The carrying and conveying device according to claim 1, characterized in that: The curled petal (232) is provided with a limiting portion (2323), and the limiting portion (2323) selectively abuts against the relative outer side of the guide reinforcement rib (223).

3. The carrying and conveying device according to claim 1, characterized in that: One end of the guide reinforcement rib (223) close to the positioning portion (221) is protruded from the conveying pipe (110).

4. The carrying and conveying device according to claim 3, characterized in that: The portion of the guide reinforcement rib (223) protruding from the delivery pipe (110) is provided with a gathering slope (2231), and the two gathering slopes (2231) are inclined toward the end of the delivery pipe (110), so that one end of the two gathering slopes (2231) facing the positioning portion (221) is open in a trumpet shape.

5. The carrying and conveying device according to claim 1, characterized in that: The curling surface (2321) is slidably placed on the curling flap (232), and the curling switch (230) has an initial state and an in-position state. When the curling switch (230) is in the initial state, the two curling flaps (232) are arranged at a preset angle; when the curling switch (230) is in the in-position state, the sliding directions of the two curling surfaces (2321) are parallel, and the axial direction of the conveying tube (110) coincides with the symmetry line of the two curling flaps (232).

6. The carrying and conveying device according to claim 5, characterized in that: The curling surface (2321) is fixed to the curling flap (232) along the sliding direction via an elastic member (2322).

7. The carrying and conveying device according to claim 1, characterized in that: A control groove (2324) is provided on the relatively outer side of the curled petal (232).

8. The carrying and conveying device according to claim 1, characterized in that: The curling switch (230) is detachably connected to the supporting base (220).

9. A proximal anastomosis assisting system, characterized in that: The invention comprises a carrying and conveying device as described in any one of claims 1 to 8, and further comprises a hemostatic umbrella (20), wherein the hemostatic umbrella (20) is abutted and placed between the guide reinforcement rib (223) and the positioning portion (221); when the curling switch (230) is in an initial state, a gap is provided between the two curling surfaces (2321) and the hemostatic umbrella (20); when the curling switch (230) is converted to a rolled state, the curling surfaces (2321) push the hemostatic umbrella (20) to curl and retract, and the conveying tube (110) slides relative to the guide groove (222) to extend from between the two guide reinforcement ribs (223) and be sleeved outside the hemostatic umbrella (20).

10. The proximal anastomosis assisting system according to claim 9, characterized in that: The proximal anastomosis auxiliary system further comprises a puncher (30), the puncher (30) comprising a handle (310), a punching knife (320) and a puncture needle unit (330), the punching knife (320) being retractably disposed in the handle (310), the puncture needle unit (330) being coaxially disposed in the punching knife (320), the puncture needle unit (330) comprising a needle rod (331) and a spring-loaded needle head (332), the spring-loaded needle head (332) being selectively exposed from the punching knife (320); the spring-loaded needle head (332) being provided with two or more spring-loaded sliding links (333), the spring-loaded sliding links (333) being spaced apart along the circumference of the needle rod (331), the spring-loaded sliding links (333) comprising a sliding section (3331) , an inverted angle section (3332) and an inverted angle section (3333), the inverted angle section (3333) is rotatably connected to the spring needle head (332) and is bent in a direction away from the needle rod (331), the sliding section (3331) is slidably connected to the needle rod (331) along the axial direction of the needle rod (331), one end of the inverted angle section (3332) is rotatably connected to the sliding section (3331) and is bent in a direction away from the needle rod (331), the other end of the inverted angle section (3332) is rotatably connected to the inverted angle section (3333), and the acute angle sandwiched between the inverted angle section (3332) and the inverted angle section (3333) is an inverted angle, and the inverted angle faces in a direction opposite to the punching direction and is used to pierce punching fragments; When the punching knife (320) extends out of the handle (310), the shrapnel needle (332) contacts the blood vessel, so that the second section of the inverted angle (3333) moves closer to the needle rod (331); when the punching knife (320) retracts into the handle (310), the second section of the inverted angle (3333) spreads out away from the needle rod (331).

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