Double-needle blood vessel suturing device

Abstract

The invention provides a double-needle blood vessel suturing device which comprises a needle handle, a main shell, a wrench and a suturing assembly. One end of the suturing assembly is connected with a sheathing canal assembly. A thread pin is arranged in the sewing assembly, and a solid needle and a hollow needle tube are arranged at one end, connected with a wrench, of a needle handle; a hanging hole is formed in one end, connected with the sheathing canal assembly, of the suturing assembly; second clamping grooves are formed in the two ends of the wire leg, needle sleeves are arranged in the two second clamping grooves, and a gap bridge wire is connected between the two needle sleeves and penetrates through the hanging hole; the hollow needle tube comprises a first needle head and a second tip, a secondary needle head sleeve is connected between the first needle head and the second tip, and the first needle head and the second tip are each connected with a suture. A connecting tube is arranged at one end of the secondary needle sleeve; according to the blood vessel wound surface suture device, a double-needle suture mode is adopted, four penetrating holes are formed in the periphery of a blood vessel wound hole at the same time, surface suture of a blood vessel wound surface can be completed through a single suture device, the cost can be greatly saved, and the operation efficiency can be greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of interventional surgical instruments and equipment, in particular to a double-needle blood vessel suturing device. Background Art

[0002] Interventional surgery has the advantages of less trauma, high efficiency, precise treatment and safety. The main difficulty in its application in clinical medicine is to stop bleeding of the blood vessels after puncture. The traditional method of hemostasis is manual pressure hemostasis, which has many inconveniences such as low efficiency, poor treatment effect, easy to detect, difficult to rupture, and difficulty for patients to remain still. Therefore, it is necessary to suture the blood vessel wounds with vascular suturing medical equipment. The cost of vascular suturing equipment is high. When used clinically, more than two perforation and suturing actions have to be used each time, which requires the consumption of multiple suturing equipment, resulting in a large medical burden. This type of suturing equipment is highly dependent on usage requirements and is difficult to control costs.

[0003] To achieve the above objectives, the present invention provides a double-needle vascular suturing device, which can solve the problems raised in the above background technology. Summary of the invention

[0004] The present invention adopts the following technical solutions to achieve:

[0005] A double-needle blood vessel suturing device comprises a needle handle, a main housing, a wrench, and a suturing assembly, one end of the suturing assembly being connected to a sheath assembly;

[0006] The suturing assembly is provided with a thread foot inside, and the thread foot is connected to the wrench. One end of the needle handle is provided with a solid needle and a hollow needle tube;

[0007] One end of the suturing assembly connected to the sheath assembly is provided with a hanging hole;

[0008] Both ends of the line foot are provided with a second card slot, and the two second card slots are provided with a needle sleeve, and a bridge wire is connected between the two needle sleeves, and the bridge wire passes through the hanging hole;

[0009] The hollow needle tube comprises a needle head 1 and a pointed head 2, a secondary needle head cover is connected between the needle head 1 and the pointed head 2, and a suture is connected to the tail ends of the needle head 1 and the pointed head 2;

[0010] The end of the secondary needle cover close to the hollow needle tube is provided with a connecting tube;

[0011] The outer sleeve of the solid needle is provided with a preset fisherman's knot.

[0012] Preferably, the second card slot includes a lateral slot and a needle sleeve placement area, the needle sleeve is located inside the needle sleeve placement area, and both ends of the needle sleeve placement area are respectively provided with a guide slope and a needle sleeve outlet hole, and the guide slope is a frustum-like table surface.

[0013] Preferably, the outlet hole of the needle sleeve is an opening that shrinks toward the outside, and the two outlet holes of the needle sleeve are sleeved on the outside of the bridge line;

[0014] A pressing sheet is provided on the peripheral side of the needle sleeve, and the pressing sheet is folded toward the inside of the needle sleeve and fixed to the bridge wire by squeezing.

[0015] Preferably, a side groove is provided on one side of the secondary needle cover, one end of the suture passes through the side groove and is connected to the needle head 1, the pointed tip 2 is located inside the secondary needle cover, and the other suture connected to the pointed tip 2 is connected to the pointed tip 2 through the side perforation of the hollow needle tube.

[0016] Preferably, an inner groove is provided at one end of the connecting tube close to the hollow needle tube, the inner groove matches the second pointed tip, and the other end of the connecting tube is detachably connected to the secondary needle cover.

[0017] Preferably, the outer wall of the hollow needle tube is provided with a clamping point, the peripheral side of the secondary needle cover is provided with a clamping track, and the clamping point is located in the clamping track for sliding connection;

[0018] The outer diameter of the hollow needle tube matches the inner diameter of the secondary needle cover;

[0019] When the connecting tube is removed, the hollow needle tube is pushed to move toward the needle sleeve, and at this time, the secondary needle sleeve is sleeved on the outer wall of the hollow needle tube.

[0020] Preferably, the needle handle is connected to one end of the main housing, and the needle handle includes a push pin, a connecting piece, and a fixing piece;

[0021] A suture arm is provided inside the main housing, and one end of the suture arm away from the sheath assembly is connected to the needle handle.

[0022] The wrench is connected to the outside of the main shell, and a slot one is provided inside the main shell. The wrench includes a pull-foot line, which is located inside the suture arm and connected to the suture foot, and the pull-foot line is located inside the slot one.

[0023] Preferably, the suturing assembly further comprises a distal groove, which is a parallel hollowed-out groove inside the suture arm, and the pull-leg wire rotates inside the distal groove.

[0024] Preferably, the preset fisherman's knot is located inside the suture arm.

[0025] Preferably, a marking cavity is provided inside the main shell, and one end of the marking cavity extends out of the main shell.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The invention operates a wrench to unfold the thread legs to press against the blood vessel walls on both sides of the puncture point after the sheath of the vascular suture device enters the blood vessel cavity; two ends of the thread legs are provided with two needle sleeves connected by a bridge line, and a pre-set fisherman's knot is provided on the push needle; the needle handle is pushed to connect the solid needle and the needle head with the two needle sleeves as a whole, and then the needle is pulled out to make the suture pass through the pre-set fisherman's knot, the suture device is rotated and the suture arm is pulled out, a secondary bridge line is set up, the connecting tube is removed, and the secondary suture is brought into the bridge line by using the pointed tip, and then the thread legs are retracted, the vascular suture device is removed, and finally the sutures left on both sides of the puncture point of the blood vessel wall are pushed, locked and cut, so that one suture device can suture two needles in the operation to form a four-hole blood vessel side puncture, thereby saving the usage of the suture device and reducing the cost;

[0028] The double-needle suturing method can complete the two entry points on both sides of the vascular wound through a single needle hole insertion. The replaceable secondary overlap bridge line makes it possible to suturing the wound with only one vascular suturing device to produce four-way punctures around the wound. When tightening the fisherman's knot, the wound surface knot can be formed more quickly, which can simplify the subsequent knot-pushing process. It can save suturing devices and improve work efficiency at the same time, which can help patients recover faster and reduce the length of time they are restricted from moving their bodies. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic cross-sectional view of a part of the structure of the suturing assembly of the present invention;

[0030] Figure 2 It is a schematic diagram of the double needle position structure at the front end of the hollow needle tube of the present invention;

[0031] Figure 3 For the present invention Figure 2 A side cross-sectional view of

[0032] Figure 4 It is a schematic structural diagram of the suturing device of the present invention;

[0033] Figure 5 It is a structural stereogram of the needle handle of the present invention.

[0034] In the figure: 1. needle handle; 11. push needle; 12. connecting piece; 13. fixing piece; 131. solid needle; 132. hollow needle tube; 1322. side groove; 2. main shell; 3. wrench; 4. marking cavity; 5. suture assembly; 52. suture arm; 521. distal groove; 522. hanging hole; 53. thread foot 531. card slot one; 532. card slot two; 5321. needle sleeve placement area; 5322. guide slope; 5323. needle sleeve outlet hole; 5324. lateral groove; 54. pull foot line; 55. needle sleeve; 553. pressing sheet; 56. bridge line; 57. needle head one; 571. secondary needle sleeve; 572. pointed head two; 58. suture; 581. preset fisherman's knot 6. sheath assembly. DETAILED DESCRIPTION

[0035] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0036] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this article includes any and all combinations of one or more related listed items.

[0038] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0039] Please refer to the attached Figure 1-3 , comprising a needle handle 1, a main housing 2, a wrench 3, and a suturing assembly 5, one end of the suturing assembly 5 being connected to a sheath assembly 6;

[0040] The suture assembly 5 is provided with a thread foot 53 inside, and the thread foot 53 is connected to the wrench 3. One end of the needle handle 1 is provided with a solid needle 131 and a hollow needle tube 132;

[0041] One end of the suture assembly 5 connected to the sheath assembly 6 is provided with a hanging hole 522;

[0042] Both ends of the thread foot 53 are provided with a second card slot 532 , and both of the second card slots 532 are provided with a needle sleeve 55 , and a bridge wire 56 is connected between the two needle sleeves 55 , and the bridge wire 56 passes through the hanging hole 522 ;

[0043] The hollow needle tube 132 includes a needle head 57 and a pointed head 572. A secondary needle head cover 571 is connected between the needle head 57 and the pointed head 572. A suture 58 is connected to the tail ends of the needle head 57 and the pointed head 572.

[0044] The end of the secondary needle cover 571 close to the hollow needle tube 132 is provided with a connecting tube 574;

[0045] The outer sleeve of the solid needle 131 is provided with a preset fisherman's knot 581;

[0046] The second card slot 532 includes a lateral slot 5324 and a needle sleeve placement area 5321. The needle sleeve 55 is located inside the needle sleeve placement area 5321. Both ends of the needle sleeve placement area 5321 are respectively provided with a guide slope 5322 and a needle sleeve 55 outlet hole 5323. The guide slope 5322 is a quasi-frustum table surface.

[0047] The exit hole of the needle sleeve 55 is an opening that shrinks toward the outside, and the two exit holes 5323 of the needle sleeve 55 are sleeved on the outside of the bridge line 56;

[0048] A pressing sheet 553 is provided on the circumference of the needle sleeve 55 . The pressing sheet 553 is folded toward the inside of the needle sleeve 55 and fixed to the bridge wire 56 by squeezing.

[0049] Please refer to Figure 1 , Figure 3-5 , a side groove 1322 is provided on one side of the secondary needle cover 571, one end of the suture 58 passes through the side groove 1322 and is connected to the needle 1 57, the pointed tip 2 572 is located inside the secondary needle cover 571, and the other suture 58 connected to the pointed tip 2 572 is connected to the pointed tip 2 572 through the side perforation of the hollow needle tube 132; an inner groove is provided at one end of the connecting tube 574 close to the hollow needle tube 132, the inner groove matches the pointed tip 2 572, and the other end of the connecting tube 574 is detachably connected to the secondary needle cover 571;

[0050] The outer wall of the hollow needle tube 132 is provided with a clamping point 575, and the peripheral side of the secondary needle cover 571 is provided with a clamping track 573, and the clamping point 575 is located in the clamping track 573 for sliding connection;

[0051] The outer diameter of the hollow needle tube 132 matches the inner diameter of the secondary needle cover 571;

[0052] When the connecting tube 574 is removed, the hollow needle tube 132 is pushed to move toward the needle sleeve 55 , and at this time, the secondary needle sleeve 571 is sleeved on the outer wall of the hollow needle tube 132 .

[0053] Please pay attention to Figure 1-3 The needle handle 1 is connected to one end of the main housing 2, and the needle handle 1 includes a push pin 11, a connecting member 12, and a fixing member 13;

[0054] A suture arm 52 is disposed inside the main housing 2, and one end of the suture arm 52 away from the sheath assembly 6 is connected to the needle handle 1.

[0055] The wrench 3 is connected to the outside of the main housing 2. A card slot 531 is provided inside the main housing 2. The wrench 3 includes a foot pull line 54. The foot pull line 54 is located inside the suture arm 52 and connected to the suture foot 53. The foot pull line 54 is located inside the card slot 531.

[0056] The suturing assembly 5 also includes a distal groove 521, which is a parallel hollowed-out groove inside the suture arm 52. The pull line 54 rotates inside the distal groove 521. The preset fisherman's knot 581 is located inside the suture arm 52. A marking cavity 4 is provided inside the main shell 2, and one end of the marking cavity 4 extends out of the main shell 2.

[0057] In one embodiment of the present invention: In one embodiment of the present invention: The operation mode of the double-needle suture four-point is to insert the sheath assembly 6, hang two bridge wires 56 through the hanging hole 522, connect the two ends of one of them to the outlet end of the needle sleeve 55, and keep the other end point and put it outside the thigh. After pushing the needle handle 1, drive the suture arm 52 to flip the thread foot 53 to resist the buckle, set the safety mechanism, push the push needle 11 so that the hollow needle tube 132 and the solid needle 131 are respectively connected to the first bridge wire 56. At this time, two perforations are generated on the vascular wound surface, and the solid needle 131 leads the needle head 56 through the bridge wire 56. 7 and suture 58, then release the safety and flip the thread foot 53 to pull out the thread foot 53 to connect the secondary bridge line 56 and the needle sleeve 55, remove the connecting tube 574, connect the front end of the hollow needle tube 132 to cooperate with the secondary needle sleeve 571, after turning the angle, insert the sheath tube assembly 6 to a deeper level again, push the front end of the hollow needle tube 132 when pushing the needle 11 into one end of the needle sleeve 55, and at the same time combine the pointed head 572, suture 58, and bridge line 56, and then take away the connecting line of the suture 58 and the bridge line 56 through one end of the solid needle 131, and then perform the fisherman's knot locking. At this time, the locking of the four holes is completed and the suturing is completed.

[0058] In one embodiment of the present invention: the present invention mainly comprises an outer tube, a suture arm 52, a thread foot 53, a pull-foot line 54, a needle sleeve 55, a bridge line 56, a needle head, and a suture 58. A safety device may be provided inside to prevent the user from operating incorrectly and causing the needle handle 1 to be directly pulled out from the inside of the suture device without being connected to the needle sleeve 55, causing the suture device to be scrapped. This safety device must first push the needle handle 1 to allow the solid needle 131 and the needle head to be connected to the needle sleeve 55, and then the safety will be automatically released. After the safety is released, the needle handle 1 can be pulled out from the inside of the suture device. This structure adopts a slide rail design, and the bottom surface is provided with an inclined surface, so that the needle handle 1 can only be pushed forward and cannot be pulled out in the opposite direction. At the same time, when it is pushed to a certain distance, the device will release the connection with the needle handle 1; a cylindrical mechanism is provided on the side of the device. In order to fix the movement trajectory of the device, the thread foot 53 is connected to the wrench 3 through the pull-foot line 54 and the internal connection mechanism. The thread foot 53 can be opened and closed by rotating the wrench 3.

[0059] In another embodiment of the present invention: the needle sleeve 55 is generally made of metal, with a top and a bottom. The needle sleeve 55 has a through hole running through both ends, and the through hole is used to insert the bridge wire 56. The bottom end is the end connected to the end of the bridge wire 56, and the top end is the end not connected to the end of the bridge wire 56. The bottom end of the needle sleeve 55 can be conical or straight. The top of the needle sleeve 55 is generally straight. The bottom end of the needle sleeve 55 in this embodiment is conical. The outer diameter of the needle sleeve 55 is 0.4-0.6mm, the wall thickness is 0.03mm-0.08mm, and the height is 1mm-1.5mm. One or more pressing sheets 553 are provided on the side wall near the top of the needle sleeve 55. The pressing sheet 553 can be pressed into the through hole of the needle sleeve 55. The shape of the pressing sheet 553 can be rectangular, trapezoidal, triangular or any other shape.

[0060] The two ends of the bridge wire 56 are respectively connected to the bottom end of the needle sleeve 55. The bridge wire 56 is generally made of polytetrafluoroethylene material, or other materials, with a diameter of about 0.2-0.5mm. The end of the bridge wire 56 inside the needle sleeve 55 is generally a tight thick head, and the length of the thick head is generally 0.2-0.5mm. The needle sleeve 55 and the bridge wire 56 can be connected by stamping, heating, barbs or other methods;

[0061] When the needle and the needle sleeve 55 are docked in the present invention, the thread foot 53 is located in the distal groove 521 of the suture arm 52. The middle part of the thread foot 53 has a slot for placing the pull-foot line 54. The thread foot 53 and the wrench 3 are connected by the pull-foot line 54 and the related connecting piece 12. The operation of the wrench 3 can control the thread foot 53 to expand and close in the distal groove 521 of the suture arm 52. The thread foot 53 is generally made of plastic. The left and right ends of the thread foot 53 have a slot that passes through the proximal and distal ends of the thread foot 53, respectively. The middle of the slot is a needle sleeve placement area 5321, which is used to accommodate the needle sleeve 55. The needle sleeve placement area 5321 can be cylindrical, V-groove or other shapes. The proximal end of the needle sleeve placement area 5321 is connected to the guide slope 5322. The guide slope 5322 is generally an opening that expands toward the proximal end and can be conical or other shapes, which is used to increase the allowable range of the needle and needle sleeve 55 docking and improve the docking accuracy of the needle and needle sleeve 55. The distal end of the needle sleeve placement area 5321 is connected to the outlet hole of the needle sleeve 55 to form an inward step. The diameter of the outlet hole 5323 of the needle sleeve 55 is usually smaller than the outer diameter of the needle sleeve 55, and can be cylindrical, V-groove or other shapes. The card slot has a lateral groove 5324 that passes through the stitch foot 53 in the longitudinal direction and opens toward the outer sides of the left and right ends of the stitch foot 53. The lateral groove 5324 is used to provide deformation of the stitch foot 53 to expand outward when the needle sleeve 55 is pushed out of the stitch foot 53 after the needle and the needle sleeve 55 are connected, so that the needle sleeve 55 can be smoothly pushed out of the stitch foot 53. Two needle sleeves 55 connected by the bridge line 56 are respectively placed in the needle sleeve placement area 5321, and one end of the two needle sleeves 55 connected to the bridge line 56 faces the needle sleeve 55 exit hole 5323 of the stitch foot 53. The bridge line 56 on the needle sleeve 55 connected to the solid needle 131 passes through the bottom step and goes back to the stitch foot 53, and passes through the bridge line 56 hanging hole 522 on the suture arm 52 and the needle sleeve 55 exit hole 5323 at the other end of the stitch foot 53, and is connected to the needle sleeve 55 connected to the needle head.

[0062] In another embodiment of the present invention: the pull hole locking method of the needle and the internal structure of the hollow needle tube 132 in the present invention, the distal end of the solid needle 131 has a prefabricated fisherman's knot, and the suture 58 is passed through the prefabricated fisherman's knot and tightened to achieve the suturing and knotting of the puncture port, one end of the fisherman's knot extends through the instrument body to the proximal end of the handle shell, and the other end of the fisherman's knot is connected to the needle and placed on the head end of the hollow needle tube 132, and the distal end of the needle has a head and neck with a similar structure to the distal end of the solid needle 131, and the outer diameter of the tail of the needle matches the inner diameter of the hollow tube, and the tail of the needle is connected to the suture 58, which can be connected by gluing, hot melting, riveting or other methods. The suture 58 at the tail of the needle can pass through the groove on the side of the distal end of the hollow needle tube 132. The front end of the tail of the needle has a step, which contacts the distal end of the hollow needle tube 132. When the needle handle 1 assembly is pushed, the hollow needle tube 132 can push the needle forward, and the push needle 11 in the hollow needle tube 132 can push the needle off the hollow needle tube 132. The distal end of the push needle 11 can be flat, oblique or any other shape.

[0063] During the vascular suturing operation, the device is conveyed along the guide wire until the guide wire outlet end of the sheath is just above the skin line, and the guide wire is removed. The device is continued to be advanced until a clear pulsed blood flow just appears in the marked lumen. The device is positioned according to the angle of degrees. The thread foot 53 is unfolded by rotating the wrench 3. The device is slowly pulled back so that the thread foot 53 is against the anterior wall of the blood vessel. The needle handle 1 assembly is pushed until the needle handle 1 collar contacts the proximal end of the housing, so that the solid needle 131 and the needle head are respectively docked with the needle sleeves 55 at both ends of the thread foot 53, and the needle handle 1 assembly is pulled back until the needle handle 1 and the needle head are completely removed from the device body and the suture 58 is tightened. The needle handle 1 assembly connected with the suture 58 is wound around the quick scissor mouth on the handle to cut off the distal suture 58 at the front of the needle head, the wrench 3 is reset to close the thread foot 53, and the vascular suturing device is removed until the guide wire port is moved out of the skin line, the end of the suture 58 is pulled back, and the vascular suturing device is removed. The thread cutting device attached to the device is used to push the knot and cut the thread to complete the suturing.

[0064] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A double-needle vascular suturing device, characterized in that: It comprises a needle handle (1), a main housing (2), a wrench (3), and a suturing assembly (5), wherein one end of the suturing assembly (5) is connected to a sheath assembly (6); The suturing assembly (5) is provided with a thread foot (53) inside, and the thread foot (53) is connected to the wrench (3); one end of the needle handle (1) is provided with a solid needle (131) and a hollow needle tube (132); One end of the suturing assembly (5) connected to the sheath assembly (6) is provided with a hanging hole (522); Both ends of the thread foot (53) are provided with a second card slot (532), and both of the two card slots (532) are provided with a needle sleeve (55), and a bridge wire (56) is connected between the two needle sleeves (55), and the bridge wire (56) passes through the hanging hole (522); The hollow needle tube (132) comprises a needle head 1 (57) and a pointed head 2 (572), a secondary needle head cover (571) is connected between the needle head 1 (57) and the pointed head 2 (572), and a suture (58) is connected to the tail ends of the needle head 1 (57) and the pointed head 2 (572); The end of the secondary needle cover (571) close to the hollow needle tube (132) is provided with a connecting tube (574); The outer sleeve of the solid needle (131) is provided with a preset fisherman's knot (581).

2. A double-needle vascular suturing device according to claim 1, characterized in that: The second card slot (532) includes a lateral slot (5324) and a needle sleeve placement area (5321), the needle sleeve (55) is located inside the needle sleeve placement area (5321), and the two ends of the needle sleeve placement area (5321) are respectively provided with a guiding inclined surface (5322) and a needle sleeve (55) outlet hole (5323).

3. A double-needle vascular suturing device according to claim 2, characterized in that: The exit hole of the needle sleeve (55) is an opening that shrinks toward the outside, and the two exit holes (5323) of the needle sleeve (55) are sleeved on the outside of the bridge wire (56); A pressing sheet (553) is provided on the circumferential side of the needle sleeve (55), and the pressing sheet (553) is folded toward the inside of the needle sleeve (55) and fixed to the bridge wire (56) by compression.

4. A double-needle vascular suturing device according to claim 1, characterized in that: A side groove (1322) is provided on one side of the secondary needle cover (571), one end of the suture (58) passes through the side groove (1322) and is connected to the needle head 1 (57), the pointed head 2 (572) is located inside the secondary needle cover (571), and the other suture (58) connected to the pointed head 2 (572) is connected to the pointed head 2 (572) through the side perforation of the hollow needle tube (132).

5. A double-needle vascular suturing device according to claim 4, characterized in that: An inner groove is provided at one end of the connecting tube (574) close to the hollow needle tube (132), and the inner groove matches the second pointed tip (572). The other end of the connecting tube (574) is detachably connected to the secondary needle cover (571).

6. A double-needle vascular suturing device according to claim 4, characterized in that: The outer wall of the hollow needle tube (132) is provided with a clamping point (575), the peripheral side of the secondary needle cover (571) is provided with a clamping track (573), and the clamping point (575) is slidably connected in the clamping track (573); The outer diameter of the hollow needle tube (132) matches the inner diameter of the secondary needle cover (571); When the connecting tube (574) is removed, the hollow needle tube (132) is pushed to move toward the needle sleeve (55), and at this time, the secondary needle sleeve (571) is sleeved on the outer wall of the hollow needle tube (132).

7. A double-needle vascular suturing device according to claim 1, characterized in that: The needle handle (1) is connected to one end of the main housing (2), and the needle handle (1) comprises a push needle (11), a connecting piece (12), and a fixing piece (13); A suture arm (52) is provided inside the main housing (2), and one end of the suture arm (52) away from the sheath assembly (6) is connected to the needle handle (1). The wrench (3) is connected to the outside of the main shell (2), and a card slot (531) is provided inside the main shell (2). The wrench (3) includes a pull-foot line (54), and the pull-foot line (54) is located inside the sewing arm (52) and connected to the stitch foot (53). The pull-foot line (54) is located inside the card slot (531).

8. A double-needle vascular suturing device according to claim 7, characterized in that: The suturing assembly (5) further comprises a distal groove (521), which is a parallel hollowed-out groove inside the suture arm (52), and the foot pull line (54) rotates inside the distal groove (521).

9. A double-needle vascular suturing device according to claim 7, characterized in that: The preset fisherman's knot (581) is located inside the suture arm (52).

10. A double-needle vascular suturing device according to claim 8, characterized in that: A marking cavity (4) is provided inside the main housing (2), and one end of the marking cavity (4) extends out of the main housing (2).

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