Suturing assembly, puncture core assembly and puncture device having the same

Abstract

A suturing assembly for suturing a hole comprises a suturing needle, a suture carrier and a suture; the end of the suture is fixedly connected to the suture carrier, and the suturing needle comprises a first matching portion; the suture carrier has a second matching portion; after the suturing needle penetrates the tissue on the opposite side of the hole, the first matching portion engages with the second matching portion, so that the suturing needle is fixedly connected to the suture carrier, and the suturing needle drives the suture carrier and the end of the suture to penetrate the tissue on the opposite side of the hole again, thereby achieving suturing of the hole; the trajectory of the penetration is the same as the trajectory of the second penetration, and the direction of the penetration is opposite to the direction of the second penetration. The suturing assembly can be applied to a puncture core assembly and a puncture device, so that the puncture device can achieve both puncture and suturing functions.

Description

Technical Field

[0001] The invention relates to a surgical instrument, in particular to a suturing assembly and a puncture core assembly and a puncture device having the same, and belongs to the field of medical equipment. Background Art

[0002] Laparoscopic surgery has been widely accepted in surgical operations. Compared with traditional open surgery, laparoscopic surgery has many advantages, including reduced damage, faster healing, and reduced risk of infection. In abdominal examinations, abdominal surgery, and other minimally invasive or surgical operations, trocars are indispensable surgical instruments. The trocar can establish an access channel in the chest wall or abdominal wall of the human body to allow staplers or other surgical instruments (such as endoscopes, scissors, guide wires, catheters, filters, stents, etc.) to enter the body cavity including the chest and abdominal cavities, and provide a channel for gas to enter and exit to control the pneumoperitoneum required for surgery for inspection or surgical operations. The trocar is a surgical instrument used to establish an artificial channel into the body cavity during laparoscopic surgery, usually consisting of a sealing sleeve assembly and a puncture core assembly. The general clinical usage is: first make a small incision on the patient's skin, then align the puncture end of the puncture device with the small incision and move the puncture device downward while rotating it back and forth. After the puncture device enters the body cavity, the puncture core assembly can be removed, leaving the sealing sleeve assembly as a passage for the stapler or other surgical instruments to enter and exit the body cavity. The existing puncture core assembly only plays a puncture role, and is discarded after guiding the sealing sleeve assembly from the incision in the abdomen of the human body into the patient's body.

[0003] After the lesion is removed, the sealing sleeve assembly is taken out and the operation is completed. The puncture wound is generally not sutured, and the patient is left to heal automatically; because the puncture hole in minimally invasive surgery is small and deep, especially for obese patients with thick abdominal walls, the suture field is small, and only the skin on the surface of the patient is sutured after the operation, and it is difficult to suture the peritoneum on the inner side of the abdominal wall. In this way, patients are prone to serious complications such as puncture hernia after surgery and require further treatment. When the patient's puncture hole must be sutured, especially the puncture hole of obese patients, only a special suturer for puncture holes can be used, but this requires additional surgical instruments, the suturing cost is high, and the surgical instruments are numerous and inconvenient to operate; in addition, the suturer specially used to suture the puncture hole has a complex structure and is inconvenient to use. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention aims to provide a suturing assembly and a puncture core assembly and a puncture device having the same, wherein the suturing assembly can realize the suturing function; the puncture core assembly and the puncture device having the suturing assembly not only have no puncture function, but also have a suturing function. The present invention is achieved through the following technical solutions:

[0005] A suturing assembly for suturing a hole comprises a suturing needle, a suture carrier and a suture; the end of the suture is fixedly connected to the suture carrier, and the suture needle comprises a first matching portion; the suture carrier has a second matching portion; after the suture needle penetrates the tissue on the opposite side of the hole, the first matching portion and the second matching portion cooperate with each other, so that the suture needle is fixedly connected to the suture carrier, and the suture needle drives the suture carrier and the end of the suture to penetrate the tissue on the opposite side of the hole again, thereby achieving suturing of the suture hole; the trajectory of the penetration is the same as the trajectory of the re-penetration, and the direction along which the penetration is taken is opposite to the direction along which the re-penetration is taken.

[0006] Preferably, the first matching part is a connecting part, and the suturing needle includes a needle tip, and the needle tip is connected to one end of the connecting part. Preferably, the suturing needle further includes a main body, and the other end of the connecting part is arranged on the main body; the diameter of the connection between the needle tip and the connecting part is larger than the diameter of the rest of the connecting part, and the diameter of the rest of the connecting part is smaller than the diameter of the main body.

[0007] Preferably, the main body is curved.

[0008] Preferably, the second matching portion is a limiting member, the suture carrier comprises an axial through hole and a deformation piece, the deformation piece is the limiting member, and the deformation piece is located at one end of the axial through hole.

[0009] Preferably, the suture carrier comprises a plurality of deformable sheets, and a clearance groove is provided between every two of the deformable sheets.

[0010] Preferably, one end of the deformable sheet is arranged on the inner surface of the wall of the axial through hole, and the other end of the deformable sheet faces the central axis of the axial through hole.

[0011] Preferably, the suture carrier comprises radial through holes, and the radial through holes are used to fix the ends of the suture.

[0012] Preferably, the first matching portion is a guide groove, the suturing needle comprises a needle tip, a guide groove and a main body, the needle tip is located at the distal end of the main body, and the guide groove is located in the distal end region of the main body.

[0013] Preferably, the guide groove comprises a blocking portion, a retaining groove and an inlet end face, the inlet end face is an inclined surface, the retaining groove is located between the blocking portion and the central axis of the main body, and an inlet space is formed between the inlet end face and the blocking portion.

[0014] Preferably, the suture carrier is in a grid shape, including four peripheral edges, a plurality of longitudinal edges and a plurality of transverse edges, and the second matching portion is any one of the longitudinal edges or the transverse edges.

[0015] Preferably, the end of the suture is fixed to any longitudinal edge or transverse edge by knotting.

[0016] Preferably, the suture carrier is made of elastic material.

[0017] Preferably, the suturing assembly comprises two suturing needles and two suture carriers, and two ends of the suture are fixedly connected to the two suture carriers respectively.

[0018] Preferably, when the two suturing needles are in the first position, the distance between the needle tips of the two suturing needles is D1; ​​when the two suturing needles are in the second position, the distance between the needle tips of the two suturing needles is D2, and D1<D2.

[0019] Preferably, the first position is an initial position, and the second position is a suturing position.

[0020] The embodiment of the present invention also provides a puncture core assembly. The puncture core assembly includes a puncture assembly and any one of the suturing assemblies described above, wherein the puncture assembly includes a puncture rod assembly and a puncture end assembly, wherein the puncture rod assembly includes a suture needle channel for accommodating the suture needle and serving as a movement track for the suture needle, wherein the suture needle has a first matching portion, and the suture carrier has a second matching portion; wherein the puncture end assembly includes a puncture element, wherein the puncture element includes a receiving portion and a puncture tip, wherein the receiving portion is used to accommodate the suture carrier, and the puncture tip is used to puncture tissue; during suturing, after the suture needle extends from the suture needle channel and penetrates the tissue on the opposite side of the hole, the first matching portion and the second matching portion cooperate with each other, so that the suture needle is fixedly connected to the suture carrier, and the suture needle drives the suture carrier and the end of the suture to penetrate the tissue on the opposite side of the hole again, thereby achieving suturing of the hole.

[0021] The embodiment of the present invention further provides a puncture device, comprising a puncture sleeve assembly and the puncture core assembly as described above, wherein the puncture core assembly can extend into the puncture sleeve assembly.

[0022] According to the suturing assembly and the puncture core assembly and puncture device having the same, there is no need to enlarge the puncture hole or add additional surgical instruments. The puncture function can be achieved to establish a channel for the stapler or other surgical instruments to enter the patient's body; and the suturing of the puncture hole can be achieved in a narrow puncture hole, thereby effectively avoiding puncture hole hernia caused by the puncture hole in minimally invasive surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of a puncture core assembly according to a first embodiment of the present invention;

[0024] Figure 2 is a cross-sectional view of an initial state of a puncture core assembly according to a first embodiment of the present invention;

[0025] Figure 3 is a schematic structural diagram of a puncture rod assembly according to a first embodiment of the present invention;

[0026] Figure 4a-4b is a schematic structural diagram of a first inner rod assembly according to a first embodiment of the present invention;

[0027] Figure 5 is a schematic structural diagram of a second inner rod assembly according to a first embodiment of the present invention;

[0028] Figure 6 is a schematic structural diagram of a knob according to a first embodiment of the present invention;

[0029] Figure 7 is a schematic structural diagram of a fixing block according to a first embodiment of the present invention;

[0030] Figure 8 is a schematic structural diagram of a first inner rod body according to a first embodiment of the present invention;

[0031] Fig. 9 is a schematic structural diagram of a transmission rod according to a first embodiment of the present invention;

[0032] Figure 10a-10b is a schematic diagram of the structure of a suture channel according to a first embodiment of the present invention;

[0033] Fig.11 is a schematic structural diagram of a puncture tip assembly according to a first embodiment of the present invention;

[0034] Fig.12 is a schematic structural diagram of a suture needle according to a first embodiment of the present invention;

[0035] Fig.13 is a schematic structural diagram of a suture carrier according to a first embodiment of the present invention;

[0036] Fig.14 is a schematic diagram of an initial state of a puncture core assembly according to a first embodiment of the present invention;

[0037] Figures 15a-15d is a schematic diagram of a suturing process of a puncture core assembly according to a first embodiment of the present invention;

[0038] Fig.16 is a schematic diagram of the state of the suture line when the puncture core assembly is taken out after suturing according to the first embodiment of the present invention;

[0039] Fig.17is a schematic structural diagram of a trocar according to a first embodiment of the present invention;

[0040] Fig.18 is a schematic structural diagram of a puncture tip assembly according to a second embodiment of the present invention;

[0041] Fig.19 is a schematic structural diagram of a suture needle according to a second embodiment of the present invention;

[0042] Fig.19a is an enlarged schematic diagram of a guide groove and a needle tip of a suture needle according to an embodiment of the present invention;

[0043] Fig. 20 is a schematic structural diagram of a suture carrier according to a second embodiment of the present invention;

[0044] Fig.21 is a schematic diagram of an initial state of a puncture core assembly according to a second embodiment of the present invention;

[0045] Figures 22a-22d is a schematic diagram of a suturing process of a puncture core assembly according to a second embodiment of the present invention;

[0046] Fig.23 is a schematic diagram of the state of the suture line when the puncture core assembly is taken out after suturing according to the second embodiment of the present invention;

[0047] Fig.24 2 is a schematic structural diagram of a trocar according to a second embodiment of the present invention. DETAILED DESCRIPTION

[0048] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0049] The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention. Figure 1 As shown, the puncture core assembly 100 of the embodiment of the present invention includes a puncture end assembly 1, a puncture rod assembly 2, a knob 31 and a suturing button 41. In order to facilitate the description of the present invention and simplify the description, in the embodiment of the present invention, the end close to the clinician is called "proximal end" or "upper end", and the end away from the clinician, that is, the end close to the patient's body is called "distal end" or "lower end". Figure 1In the orientation or position relationship shown, the end close to the suturing button 41 is regarded as the "proximal end" or "upper end", and the end close to the puncture end 1 is regarded as the "distal end" or "lower end"; the axial direction of the puncture core assembly 100 is referred to as the "height" direction, and the radial direction of the puncture core assembly 100 is referred to as the "width" direction; the direction close to the central axis of the puncture core assembly 100 is regarded as the "inside", and the direction away from the central axis of the puncture core assembly 100 is regarded as the "outside".

[0050] Figures 1 to 17 It is a structural diagram of the first embodiment of the present invention.

[0051] like Figure 1 As shown, the puncture core assembly 100 includes a puncture rod assembly 2, a puncture end assembly 1 disposed at the distal end of the puncture rod assembly 2, a knob 31 disposed at the proximal end of the puncture rod assembly 2, and a suturing button 41. Figures 2 to 5 As shown, the puncture core assembly 100 also includes a first inner rod assembly 3 and a second inner rod assembly 4. Figure 2 It is a cross-sectional view of the puncture core assembly 100 of an embodiment of the present invention, which depicts the composition and assembly relationship of the puncture core assembly 100. The puncture core assembly 100 is composed of the second inner rod assembly 4, the first inner rod assembly 3 and the puncture rod assembly 2 from the inside to the outside. At least a portion of the second inner rod assembly 4 is located in the first inner rod assembly 3, and at least a portion of the first inner rod assembly 3 is located in the puncture rod assembly 2; and the central axis of the second inner rod body 40, the central axis of the first inner rod body 30 and the central axis of the puncture rod body 20 all coincide. At least a portion of the second inner rod assembly 4 is located in the first inner rod assembly 3, which refers to the positional relationship between the two, not that all components of the second inner rod assembly 4 are located in the first inner rod assembly 3.

[0052] Figure 3 1 is a schematic diagram of the structure of the puncture rod assembly 2 according to an embodiment of the present invention. In order to clearly show the structure and assembly relationship, some parts are omitted in the figure. The puncture rod assembly 2 includes a puncture rod body 20 and a suture track 6. The puncture rod body 20 is an elongated hollow cylinder, and includes a first channel 23 that runs through it from top to bottom. The first inner rod body 30 is located in the first channel 23 and can move up and down relative to the first channel 23. The proximal end of the puncture rod body 20 is provided with a blocking surface 26 extending along its radial direction, and a handle 24 is provided above the blocking surface 26. The diameter of the handle 24 is larger than the diameter of the puncture rod body 20. The handle 24 is a hollow cylinder, and the diameter of the blocking surface 26 is larger than the diameter of the handle 24. Two limiting protrusions 25 are symmetrically provided on the outer wall of the handle 24. In addition, the distal end of the puncture rod body 20 is also provided with a first mounting hole 22 for fixed connection with the suture track 6, and the puncture end assembly 1 is rotatably connected to the suture track 6. The maximum diameter of the proximal end of the puncture end assembly 1 is substantially equal to the diameter of the puncture rod body 20, and the distal end thereof is the puncture tip.

[0053] Figure 4a is a schematic structural diagram of a first inner rod assembly 3 according to an embodiment of the present invention, Figure 4b The first inner rod assembly 3 includes a first inner rod body 30, a fixed block 32 fixedly connected to the proximal end of the first inner rod body 30, and a knob 31 rotatably connected to the fixed block 32; the first inner rod assembly 3 also includes a first elastic element 33, a transmission rod 5 and a transmission block 9, the first elastic element 33 is sleeved on the outer wall of the first inner rod body 30, its proximal end abuts against the distal end of the fixed block 32, and its distal end abuts against the upper surface of the blocking surface 26 of the puncture rod body 20; the distal end of the first inner rod body 30 is fixedly connected to the proximal end of the transmission rod 5, and the distal end of the transmission rod 5 is fixedly connected to the transmission block 9. The interior of the first inner rod body 30 forms a second channel 34 that runs through from top to bottom, and the second inner rod body 40 is located in the second channel 34 and can move up and down in the second channel 34. Further, the central axis of the first inner rod body 30 coincides with the central axis of the puncture rod body 20.

[0054] like Figure 5 As shown, the second inner rod assembly 4 includes a second inner rod body 40, a suturing button 41 fixedly connected to the proximal end of the second inner rod body 40, and two waist-shaped holes 42 are symmetrically arranged at the proximal end of the second inner rod body 40. The pin (not shown) passes through the waist-shaped hole 42 and is fixedly connected to the first inner rod body 30 and the fixing block 32 in sequence. The slot width of the waist-shaped hole 42 is slightly larger than the diameter of the pin, and the pin can only move up and down in the waist-shaped hole 42; in this way, the pin limits the second inner rod body 40 to move up and down in the first inner rod body 30, and cannot rotate in the circumferential direction. The distal end of the second inner rod body 40 includes a second through hole 45 that cooperates with the suturing needle 7, and the two waist-shaped holes 42 and the two suturing needles 7 are located in the same plane. The second inner rod body 40 includes a first rod body 43 and a second rod body 44 from near to far, and the cross-sectional area of ​​the second rod body 44 is smaller than the cross-sectional area of ​​the first rod body 43. The second rod body 44 is a cylinder or a cuboid, and its cross-sectional area is smaller than the cross-sectional area of ​​the puncture rod body 20; when it is a cylinder, its diameter is smaller than the diameter of the puncture rod body 20, and when it is a cuboid, its width and length are both smaller than the diameter of the puncture rod body 20. Preferably, the second rod body 44 is a cuboid, and a second elastic element 46 is further provided outside the second rod body 44, the proximal end of the second elastic element 46 abuts against the distal end of the first rod body 43, and the distal end thereof abuts against the proximal end of the suture channel 6; further, the central axis of the second inner rod body 40, the central axis of the first inner rod body 30 and the central axis of the puncture rod body 20 all coincide.

[0055] refer to Figure 6The knob 31 is a hollow cylindrical shell, and a limiting groove 311 is provided on its side wall. The limiting protrusion 25 of the puncture rod assembly 2 can move in the limiting groove 311, and two limiting grooves 311 are provided on the side wall of the knob 31 corresponding to the two limiting protrusions 25. Each limiting groove 311 includes a first section 311a, a second section 311b and a third section 311c from bottom to top, wherein the first section 311a and the third section 311c are linear, and the second section 311b in the middle is curved, and the three sections of the limiting groove 311 are smoothly connected in sequence, and the whole is roughly "S" shaped. The first section 311a of the limiting groove 31 is the initial position, and the inner side of the groove is provided with a first positioning key 3111. The second section 311b is the adjustment stroke position, and the third section 311c is the end position, and the inner side of the groove is provided with a second positioning key 3112. When the limiting protrusion 25 is located at the initial position or the end position, the first positioning key 3111 or the second positioning key 3112 is used to fix the limiting protrusion 25 to prevent unexpected movement. The first positioning key 3111 and the second positioning key 3112 are protrusions with a smaller height. In order to facilitate the rotation of the knob 31, its outer surface is provided with anti-skid patterns 312 to increase friction and thus play an anti-skid role. The knob 31 is also provided with an annular hole wall 313, which surrounds the rotating shaft 321 of the fixed block 32, and the lower surface of the annular hole wall 313 abuts against the upper surface of the first step 322 of the fixed block 32.

[0056] like Figure 2 or Figure 7 As shown, the fixing block 32 includes a rotating shaft 321, a groove 323 located above the rotating shaft 321, and a first step 322 located below the rotating shaft 321, and the diameters of the groove 323, the rotating shaft 321, and the first step 322 are increased in sequence; the fixing block 32 also includes a first through hole 325 that runs through from top to bottom. The proximal end of the first inner rod body 30 is symmetrically provided with a first mounting hole (not shown), and the outer wall below the first step 322 is symmetrically provided with a second mounting hole (not shown), and the pin (not shown) passes through the waist-shaped hole 42 of the second inner rod body 40 and is fixedly connected with the first mounting hole (not shown) of the first inner rod body 30 and the second mounting hole (not shown) of the fixing block 32 in sequence. The proximal end of the first inner rod body 30 is located in the first through hole 325 of the fixing block 32, and the second inner rod body 40 is at least partially located in the first inner rod body 30. Preferably, the central axis of the fixing block 32 coincides with the central axis of the second inner rod body 40. Preferably, a blocking block is provided on the main body structure of the fixing block 32 to prevent the knob 31 from moving upward relative to the fixing block 32 .

[0057] The distal end of the puncture rod body 20 is symmetrically provided with two through grooves, the lower ends of which extend to the lower end of the puncture rod body 20 and are roughly "U"-shaped, forming a second receiving portion (not shown), which constitutes a part of the track for the movement of the suture needle 7. Figure 83 is a schematic diagram of the structure of the first inner rod body 30 according to an embodiment of the present invention. The second channel 34 is a substantially rectangular groove at the distal end of the first inner rod body 30. The second rod body 44 of the second inner rod body 40 is located in the rectangular groove. The distal end of the first inner rod body 30 also includes a blind hole 36. Preferably, the blind holes 36 are symmetrically arranged on both sides of the second channel 34 for connecting with the transmission rod 5. Fig. 9 The proximal end of the transmission rod 5 includes a transmission rod body 52 and a mounting end 51, preferably, including two mounting ends 51; the two mounting ends 51 are symmetrically arranged at the proximal end of the transmission rod body 52, and the two mounting ends 51 of the transmission rod 5 are respectively mounted and fixed in the two blind holes 36 of the first inner rod body 30, and the distal end of the transmission rod body 52 is fixedly connected to the transmission block 9. Preferably, the transmission rod 5 is integrally formed.

[0058] Figure 10a-Figure 10b Schematic diagram of the structure of the suturing track 6. The suturing track 6 is fixedly connected to the distal end of the puncture rod body 20, and is used to provide a movement channel for the suturing needle 7. The suturing track 6 includes a third receiving portion 63 and a receiving space 64. The receiving space 64 is located between the distal end of the suturing needle channel 61 and the third receiving portion 63, and is used to receive and fix the target tissue to be sutured. The puncture end assembly 1 is rotatably connected to the third receiving portion 63. In one embodiment of the present invention, reference Fig.10b , a suture needle channel 61 and a transmission channel 62 are provided inside the suture track 6; the transmission channel 62 is formed along the central axis of the suture track 6 and penetrates the suture track 6, including a transmission rod channel 621 and a transmission block channel 622 that are interconnected, the transmission rod body 52 is located in the transmission rod channel 621 and can move up and down in the transmission rod channel 621, and the transmission block 9 is located in the transmission block channel 622 and can move up and down in the transmission block channel 622. Preferably, the two suture needle channels 61 are symmetrically arranged along the transmission channel 621; correspondingly, the suture track 6 includes two third receiving portions 63 and two accommodating spaces 64. The suture needle channel 61 extends in a curve, and further, in an arc; preferably, in a circular arc. The suture needle channel 61 extends from the upper end of the suture track 6 to its side, and is located above the accommodating space 64.

[0059] like Fig.11 and Figure 3As shown, the puncture end assembly 1 includes a first puncture element 11 and a second puncture element 12. The first puncture element 11 includes a puncture tip 13. The puncture tip 13 is generally conical. Generally conical means that the puncture tip 13 is conical or quasi-conical, that is, the generatrix of the puncture tip 13 can be a straight line, a convex curve or a concave curve. The second puncture element 12 can be accommodated in the first puncture element 11. The portion of the puncture end assembly 1 other than the puncture tip 13 is a cylinder, and the diameter of the cylinder is the same as the diameter D1 of the puncture rod assembly 2. The puncture tip 13 is arranged on one puncture element instead of being formed by two puncture elements together, which can improve the strength of the portion where the puncture tip 13 is located, which is conducive to applying force to the tip and thus facilitating puncture. The first puncture element 11 and the second puncture element 12 are both provided with a rotating shaft 17 at their proximal ends. The guide surface 18 of the rotating shaft 17 is an arc surface. Preferably, the guide surface 18 is a circular arc surface. Furthermore, the guide surface 18 is a quarter circular arc surface. The junction of the first puncture element 11 and the guide surface 18 is a first end surface 112, and the junction of the second puncture element 12 and the guide surface 18 is a second end surface 122. Fig.11 As shown, when the first puncture element 11 and the second puncture element 12 are in the open state, the first end surface 112 and the second end surface 122 face each other. Figure 3 As shown, when the first puncture element 11 and the second puncture element 12 are in a closed state, the first end surface 112 and the second end surface 122 are parallel and in the same horizontal plane. The upper end surface of the puncture tip 13 is the first plane 113, and the lower end surface of the second puncture element 12 is the second plane 123. The second plane 123 has the same shape and size as the first plane 113. Figure 3 As shown, when the first puncture element 11 and the second puncture element 12 are in the closed state, the second plane 123 is located above the first plane 113. The guide surface 18 is used to abut and cooperate with the transmission block 9.

[0060] A first receiving portion 116 is provided on the side wall of the first puncture element 11, which is used to receive the first end of the suture carrier 8 and the suture 88, and allows the needle tip 71 of the suture needle 7 to enter and exit. A second receiving portion 126 is provided on the side wall of the second puncture element 12, which is used to receive the second end of the suture carrier 8 and the suture 88, and allows the needle tip 71 of another suture needle 7 to enter and exit. The first receiving portion 116 and the second receiving portion 126 have the same shape, structure and function. For the sake of simplicity and clarity, the present invention only describes the connection relationship between the first receiving portion 116 and the suture carrier 8 and the suture 88. Continue to refer to Fig.15a The puncture tip 13 also includes a receiving groove 118 for receiving the main body of the suture 88. The receiving groove 118 is at least connected to a portion of the first plane 113. A connecting channel 117 is provided between the first receiving portion 116 and the receiving groove 118, and the connecting channel 117 is used to receive the suture 88 of the seam portion.

[0061] Fig.12 : is a schematic diagram of the structure of a suture needle 7 according to an embodiment of the present invention. The suture needle 7 includes a needle tip 71, a main body 72, a connecting portion 73 and an end portion 74. The connecting portion 73 may also be referred to as a first matching portion, which is used to fix the suture needle 7 to the suture carrier 8. The needle tip 71 is connected to one end of the connecting portion 73, and the other end of the connecting portion 73 is arranged on the main body 72. The diameter of the connecting portion 73 connected to the needle tip 71 is larger than the diameter of the rest of the connecting portion 73, and the diameter of the rest of the connecting portion 73 is smaller than the diameter of the main body 72. The connecting portion 73 is specifically a connecting column. The main body 72 is curved, further arc-shaped, and specifically circular arc-shaped. The shape of the main body 72 is consistent with the suture needle channel 61 of the suture track 6, and the suture needle 7 is accommodated and moves in the suture needle channel 61. Preferably, the channel diameter of the suture needle channel 61 is larger than the diameter of the main body 72 of the suture needle 7 and larger than the diameter of the suture thread carrier 8, thereby reducing the resistance encountered by the suture needle 71 when moving in the suture needle channel 61 and allowing the suture needle 7 to enter the suture needle channel 61 with the suture thread carrier 8. The movement trajectory of the needle tip 71 is a curve. The distal end of the second inner rod body 40 of the second inner rod assembly 4 includes a second through hole 45 that cooperates with the end 74 of the suture needle 7, and the end 74 is rotatably connected to the second inner rod assembly 4.

[0062] Fig.13 : is a schematic diagram of the structure of a suture carrier 8 according to an embodiment of the present invention. The suture carrier 8 is roughly cylindrical, and the shape of the suture carrier 8 is consistent with the shape of the first receiving portion 116 (or the second receiving portion 126). The suture carrier 8 includes an axial through hole 85, a plurality of deformable sheets 81, a plurality of clearance grooves 82 and a radial through hole 83. The axial through hole 85 is used to allow the suture needle 7 to pass through and to accommodate the suture 88. A clearance groove 82 is provided between each two deformable sheets 81. The deformable sheet 81 and the clearance groove 82 are located at the first end 851 of the axial through hole 85. The suture needle 7 enters the axial through hole 85 from the direction of the first end 851. The deformable sheet 81 also includes an inclined surface 810, which is located at one end of the deformable sheet 81 close to the central axis of the axial through hole 85, and the other end of the deformable sheet 81 is arranged on the inner surface of the wall of the axial through hole 85. The inclined surface 810 makes it easy for the suture needle 7 to enter the axial through hole 85, and the bottom surface of the deformable sheet 81 is a plane, which is easy to clamp the connecting portion 73 of the suture needle 7. Thus, the deformable sheet 81 constitutes a limiting member for limiting the suture needle 7. The limiting member 81 can also be called a second matching portion, which is used to cooperate with the first matching portion of the suture needle 7 so that the suture needle 7 is fixedly connected to the suture carrier 8. The clearance grooves 82 on both sides of the deformable sheet 81 effectively provide the elastic margin and deformation space required during the deformation of the deformable sheet 81. The radial through hole 83 is used to fix the first end or the second end of the suture 88.

[0063] Fig.14 1 is a schematic diagram of the initial state (i.e., closed state) of the puncture tip assembly according to an embodiment of the present invention. At this time, the first puncture element 11 and the second puncture element 12 are in the closed state, the first end of the first suture 88 is fixedly connected to the suture carrier 8 located in the first receiving portion 116, the second end of the suture 88 is fixedly connected to the suture carrier 8 located in the second receiving portion 126, and the main body of the suture 88 is located in the receiving groove 118 of the puncture tip 13. Figure 2 As shown, the two suture needles 7 are respectively located in their respective suture needle channels 61 and are in a state of not piercing tissue. It is defined that the suture needles 7 are at the first position, i.e., the initial position, and the distance between the needle tips 71 of the two suture needles 7 is the first distance D1. The first distance D1 is exactly the diameter of the puncture end assembly 1 (equivalent to the diameter of the puncture hole).

[0064] Fig.15a The first puncture element 11 and the second puncture element 12 of the puncture end assembly 1 are in an open state. Fig.14 The puncture end assembly 1 is in the closed state Fig.15a The puncture end assembly 1 is in the open state, and the operator rotates the knob 31 so that the protrusion 25 moves along the path of the limiting groove 311, and the knob 31 is rotated from Fig.14 The handle 24 is shown in its initial position and moves to Fig.15a As shown, it is located at the end position of the handle 24. During the movement of the protrusion 25 along the path of the limiting groove 311, the transmission rod 5 and the transmission block 9 are pushed downward, and the transmission block 9 pushes the first puncture element 11 and the second puncture element 12 to open radially outward. After the first puncture element 11 and the second puncture element 12 are opened, the main body of the suture 88 originally located in the receiving groove 118 falls out of the receiving groove 118. The operator lifts the puncture core assembly 100 upward as a whole until the first puncture element 11 and the second puncture element 12 directly contact the fascia layer of the tissue.

[0065] Fig.15b is a schematic diagram of a state where two suture needles 7 enter the first receiving portion 116 and the second receiving portion 126 respectively, Fig.15c for Fig.15b From Fig.15a The puncture end assembly 1 is opened to Fig.15b When the suture needle 7 enters the receiving portion, the operator presses the button 41, which pushes the second inner rod assembly 4 downward and compresses the second elastic element 46 downward. During the downward movement of the second inner rod assembly 4, the suture needle 7 is driven to extend radially outward along the suture needle channel 61 of the suture track 6. Fig.16As shown, when the suture needle 7 is ejected from the suture needle channel 61, the suture needle 7 penetrates the tissue fascia layer located at the movement trajectory of the suture needle 7. In the process of the suture needle 7 extending toward the radial outer end, the needle tip 71 of the suture needle 7 extends into the axial through hole 85 of the suture carrier 8 located in the first receiving portion 116 and the second receiving portion 126 respectively. The connecting portion 73 of the suture needle 7 is stuck by the stopper of the suture carrier 8. Fig.15c As shown, the suture needle 7 is in a state of penetrating the tissue, and it is defined that the suture needle 7 is in the second position, i.e., the suture position, and the distance between the needle tips 71 of the two suture needles 7 is the second distance D2. Among them, the first distance D1 is smaller than the second distance D2. The second distance D2 is the end distance of the suture needle penetrating the tissue fascia layer, and the end distance is greater than the diameter of the puncture end assembly (equivalent to the diameter of the puncture hole), which is beneficial to the suture thread during the tightening process. There is no risk of scratching the tissue to be sutured due to being too close to the puncture hole, resulting in suture failure.

[0066] When the operator releases the button 41, the second inner rod assembly 4 moves upward under the restoring force of the second elastic element 46, driving the suture needle 7 to move radially inward along the suture needle channel 61 of the suture track 6 and retract into the suture needle channel 61. Since the connecting portion 73 is stuck by the limiting portion 810 of the suture thread carrier 8, when the suture needle 7 is retracted, the suture needle 7 drives the suture thread carrier 8 to enter the suture needle channel 61 together. Fig.16 As shown, the first end or the second end of the suture 88 is fixed on the radial through hole 83 of the suture carrier 8. After the suture carrier 8 enters the suture needle channel 61, part of the suture 88 passes through the fascia layer channel formed by the suture needle 7 puncturing the fascia layer.

[0067] Fig.15d Schematic diagram of the puncture core assembly returning to the initial state (i.e., closed state). When the operator releases the button 41, the suture needle 7 and the suture thread carrier 8 enter the suture channel 61, and the operator reversely rotates the knob 31. During the reverse movement of the protrusion 25 along the path of the limit groove 311, the transmission rod 5 and the transmission block 9 are pulled upward, and the transmission block 9 drives the first puncture element 11 and the second puncture element 12 to retract toward the radial inner end, and return to the initial state (i.e., closed state).

[0068] refer to Fig.16As shown, the operator pulls the puncture core assembly 100 out of the puncture hole as a whole, and the first and second ends of the suture 88 are moved out of the body cavity along with the puncture core assembly 100. After the puncture core assembly 100 is removed from the patient's body, the first and second ends of the suture 88 are tightened and knotted, and then the excess suture 88 is removed to complete the suturing of the puncture hole. As long as the subcutaneous tissue at the patient's puncture hole is sutured, the occurrence of puncture hole hernia can be effectively prevented; preferably, the knot is tied in the patient's dermis, so that the knot is located in the puncture hole and does not leak out of the patient's skin to prevent the knot from being touched after surgery. Because the fascia layer at the patient's subcutaneous tissue has been sutured, the puncture hole will not open, and the epidermis or dermis is easy to heal automatically. Preferably, the suture 88 is a suture that can be absorbed by the human body.

[0069] Based on the puncture core assembly 100 described above, the present invention further provides a puncture device 300. Fig.17 The puncture device 300 also includes a sleeve assembly 200. During puncture, the puncture core assembly 100 is inserted into the puncture sleeve assembly 200 and guides the sleeve assembly 200 into the patient's abdominal cavity to allow other surgical instruments to enter the patient's body for surgical operations. After the cutting and suturing operation is completed, the puncture device 300 of the present invention can also suture the puncture hole.

[0070] Figures 18 to 24 FIG. 1 is a drawing of the second embodiment of the present invention. The puncture rod assembly, the knob and the suturing button arranged at the proximal end of the puncture rod assembly of the second embodiment of the present invention are different from those of the first embodiment of the present invention. Figures 1 to 10b The structure described in the second embodiment is the same and will not be described again. This article only describes in detail the puncture end assembly 1 and the entire suturing process in the second embodiment.

[0071] like Fig.18As shown, the puncture end assembly 1 includes a first puncture element 11 and a second puncture element 12. The first puncture element 11 includes a puncture tip 13. The puncture tip 13 is generally conical. Generally conical means that the puncture tip 13 is conical or quasi-conical, that is, the generatrix of the puncture tip 13 can be a straight line, a convex curve or a concave curve. The second puncture element 12 can be accommodated in the first puncture element 11. The portion of the puncture end assembly 1 other than the puncture tip 13 is a cylinder, and the diameter of the cylinder is the same as the diameter D1 of the puncture rod assembly 2. The puncture tip 13 is arranged on one puncture element instead of being formed by two puncture elements together, which can improve the strength of the portion where the puncture tip 13 is located, which is conducive to applying force to the tip and thus facilitating puncture. The first puncture element 11 and the second puncture element 12 are both provided with a rotating shaft 17 at their proximal ends. The guide surface 18 of the rotating shaft 17 is an arc surface. Preferably, the guide surface 18 is a circular arc surface. Furthermore, the guide surface 18 is a quarter circular arc surface. The junction of the first puncture element 11 and the guide surface 18 is a first end surface 112, and the junction of the second puncture element 12 and the guide surface 18 is a second end surface 122. Fig.11 As shown, when the first puncture element 11 and the second puncture element 12 are in the open state, the first end surface 112 and the second end surface 122 face each other. Figure 3 As shown, when the first puncture element 11 and the second puncture element 12 are in the closed state, the first end surface 112 and the second end surface 122 are parallel and in the same horizontal plane. The upper end surface of the puncture tip 13 is the first plane 113, and the lower end surface of the second puncture element 12 is the second plane 123. The second plane 123 has the same shape and size as the first plane 113. Figure 3 As shown, when the first puncture element 11 and the second puncture element 12 are in the closed state, the second plane 123 is located above the first plane 113. The guide surface 18 is used to abut and cooperate with the transmission block 9.

[0072] A first receiving portion 116 is provided on the side wall of the first puncture element 11, which is used to receive the first end of the suture carrier 8 and the suture 88, and allows the needle tip 71 of the suture needle 7 to enter and exit. A second receiving portion 126 is provided on the side wall of the second puncture element 12, which is used to receive the second end of the suture carrier 8 and the suture 88, and allows the needle tip 71 of another suture needle 7 to enter and exit. A fixing unit 116a for fixing the suture carrier 8 is provided at the entrance of the first receiving portion 116. The fixing unit 116a can specifically be a groove and a protrusion with the same grid spacing as the suture carrier 8. When the suture carrier 8 is not subjected to external force, the grid end of the suture carrier 8 is fixed at the entrance of the first receiving portion 116 by the cooperation of the groove and the protrusion; when the suture carrier 8 is subjected to external force from the inside of the first receiving portion 116 to the outside, the suture carrier 8 is detached from the entrance of the first receiving portion 116. The first receiving portion 116 and the second receiving portion 126 have the same shape, structure and function. For the sake of simplicity and clarity, the present invention only describes the connection relationship between the first receiving portion 116 and the suture carrier 8 and the suture 88. Fig.15a The puncture tip 13 also includes a receiving groove 118 for receiving the main body of the suture 88. The receiving groove 118 is at least connected to a portion of the first plane 113. A connecting channel 117 is provided between the first receiving portion 116 and the receiving groove 118, and the connecting channel 117 is used to receive the suture 88 of the seam portion.

[0073] Fig.19 : is a schematic diagram of the structure of a suture needle 7 according to an embodiment of the present invention. The suture needle 7 includes a needle tip 71, a main body 72, a guide groove 73 and an end 74. The needle tip 71 is located at one end of the main body 72, and the main body 72 is provided with a guide groove 73. The main body 72 is curved, further arc-shaped, specifically circular arc-shaped. The shape of the main body 72 is consistent with the suture needle channel 61 of the suture track 6, and the suture needle 7 is accommodated and moved in the suture needle channel 61. The channel diameter of the suture needle channel 61 is larger than the diameter of the main body 72 of the suture needle 7, thereby reducing the resistance encountered by the suture needle 71 in the suture needle channel 61. The channel diameter of the suture needle channel 61 is also larger than the size of the suture thread carrier 8 after contraction. The movement trajectory of the needle tip 71 is the same as that of the main body 72. The distal end of the second inner rod body 40 of the second inner rod assembly 4 includes a second through hole 45 that cooperates with the end 74 of the suture needle 7, and the end 74 is rotatably connected to the second inner rod assembly 4.

[0074] Continue to refer Fig.19aThe guide groove 73 includes a blocking portion 733, a retention groove 735 and an entrance end face 731. The entrance end face 731 is a surface formed by obliquely cutting into the main body 72 from the outer peripheral surface of the main body 72 toward the needle tip 71 and the central axis of the main body 72, and then cutting out the retention groove 735 in the main body 72 along the central axis direction thereof, and a blocking portion 733 is left between the retention groove 735 and the outer peripheral surface of the main body 72, and an entrance space 737 is formed between the blocking portion 733 and the entrance end face 731. The retention groove 735 is used to retain the connection portion of the suture carrier 8. The entrance end face 731 is an inclined surface, which facilitates the connection portion of the suture carrier 8 to enter the retention groove 735. The guide groove 73 can also be called a first matching portion.

[0075] Fig. 20 : is a schematic diagram of the structure of a suture carrier 8 according to an embodiment of the present invention. The suture carrier 8 is in a grid shape and the overall shape is roughly rectangular. The shape of the suture carrier 8 is consistent with the shape of the first receiving portion 116 (or the second receiving portion 126). The suture carrier 8 includes four peripheral edges 81, a plurality of longitudinal edges 83 and a plurality of transverse edges 82. The longitudinal edges 83 and the transverse edges 82 intersect with each other. Each longitudinal edge 83 is connected to the four peripheral edges 81, and each transverse edge 82 is connected to the four peripheral edges 81. The plurality of longitudinal edges 83 are parallel to each other, and the plurality of transverse edges 82 are parallel to each other. A plurality of square spaces 85 (i.e., grids) are formed between each longitudinal edge 83, the transverse edge 81 and the four peripheral edges 81. The length and width of the square space 85 are slightly smaller than the diameter of the main body 72 of the suture needle 7. The suture carrier 8 is made of elastic material. When the suture carrier 8 is fixed to the first receiving portion 116 or the second receiving portion 126, the suture carrier 8 is in a slightly tight state. The end of the suture 88 can be fixed on any longitudinal edge 83 or transverse edge 82, and the specific fixing method can be a knotting method. Each transverse edge 82 and longitudinal edge 83 can be collectively referred to as a connecting portion of the suture carrier 8. The connecting portion can also be referred to as a second matching portion. As known to those skilled in the art, the shape of the suture carrier 8 and the first receiving portion 116 (or the second receiving portion 126) can also be set to other shapes, such as round, square or other polygonal shapes.

[0076] Fig.21 1 is a schematic diagram of the initial state (i.e., closed state) of the puncture tip assembly according to an embodiment of the present invention. At this time, the first puncture element 11 and the second puncture element 12 are in the closed state, the first end of the first suture 88 is fixedly connected to the suture carrier 8 located in the first receiving portion 116, the second end of the suture 88 is fixedly connected to the suture carrier 8 located in the second receiving portion 126, and the main body of the suture 88 is located in the receiving groove 118 of the puncture tip 13. Figure 2As shown, the two suture needles 7 are respectively located in their respective suture needle channels 61 and are in a state of not piercing tissue. The suture needles 7 are defined as being in a first position, i.e., an initial position, and the distance between the needle tips 71 of the two suture needles 7 is exactly the diameter of the puncture end assembly 1, i.e., a first distance D1.

[0077] Fig.22a The first puncture element 11 and the second puncture element 12 of the puncture end assembly 1 are in an open state. Fig.21 The puncture end assembly 1 is in the closed state Fig.22a The puncture end assembly 1 is in the open state, and the operator rotates the knob 31 so that the protrusion 25 moves along the path of the limiting groove 311, and the knob 31 is rotated from Fig.21 The handle 24 is shown in its initial position and moves to Fig.22a As shown, it is located at the end position of the handle 24. During the movement of the protrusion 25 along the path of the limiting groove 311, the transmission rod 5 and the transmission block 9 are pushed downward, and the transmission block 9 pushes the first puncture element 11 and the second puncture element 12 to open radially outward. After the first puncture element 11 and the second puncture element 12 are opened, the main body of the suture 88 originally located in the receiving groove 118 falls out of the receiving groove 118. The operator lifts the puncture core assembly 100 upward as a whole until the first puncture element 11 and the second puncture element 12 directly contact the fascia layer of the tissue.

[0078] Figure 22b is a schematic diagram of a state where two suture needles 7 enter the first receiving portion 116 and the second receiving portion 126 respectively, Fig.22c for Figure 22b From Fig.22a The puncture end assembly 1 is opened to Figure 22b When the suture needle 7 enters the receiving portion, the operator presses the button 41, which pushes the second inner rod assembly 4 downward and compresses the second elastic element 46 downward. During the downward movement of the second inner rod assembly 4, the suture needle 7 is driven to extend radially outward along the suture needle channel 61 of the suture track 6. Fig.23 As shown, when the suture needle 7 extends out of the suture needle channel 61, the suture needle 7 penetrates the tissue fascia layer located at the movement track of the suture needle 7. When the suture needle 7 is ejected toward the radial outer end, the needle tip 71 of the suture needle 7 extends into the square space 85 of the suture carrier 8 located in the first receiving portion 116 and the second receiving portion 126, respectively, so that a transverse edge 82 or a longitudinal edge 83 of the suture carrier 8 enters the guide groove 73 of the suture needle 7. Fig.22cAs shown, the suture needle 7 is in a state of penetrating the tissue, and it is defined that the suture needle 7 is in the second position, i.e., the suture position, and the distance between the needle tips 71 of the two suture needles 7 is the second distance D2. Among them, the first distance D1 is smaller than the second distance D2. The second distance D2 is the end distance of the suture needle penetrating the tissue fascia layer, and the end distance is greater than the diameter of the puncture end assembly (equivalent to the diameter of the puncture hole), which is beneficial to the suture thread during the tightening process. There is no risk of scratching the tissue to be sutured due to being too close to the puncture hole, resulting in suture failure.

[0079] When the operator releases the button 41, the second inner rod assembly 4 moves upward under the action of the restoring force of the second elastic element 46, driving the suture needle 7 to move radially inward along the suture needle channel 61 of the suture track 6 and retract into the suture needle channel 61. Since a transverse edge 82 or a longitudinal edge 83 of the suture thread carrier 8 is located in the guide groove 77 and is blocked by the blocking portion 733, when the suture needle 7 is retracted, the suture needle 7 drives the suture thread carrier 8 to enter the suture needle channel 61 together. The suture thread carrier 8 is made of elastic material. When the suture thread carrier 8 is pulled out of the first receiving portion 116 or the second receiving portion 126 by the suture needle 7, the volume of the suture thread carrier 8 becomes smaller, so that it is sufficient to enter the suture needle channel 61. Fig.16 As shown, the first end or the second end of the suture 88 is fixed on the longitudinal edge or the transverse edge of the suture carrier 8. After the suture carrier 8 enters the suture needle channel 61, part of the suture 88 passes through the fascia layer channel formed by the suture needle 7 puncturing the fascia layer.

[0080] Fig.22d Schematic diagram of the puncture core assembly returning to the initial state (i.e., closed state). When the operator releases the button 41, the suture needle 7 and the suture thread carrier 8 enter the suture channel 61, and the operator reversely rotates the knob 31. During the reverse movement of the protrusion 25 along the path of the limit groove 311, the transmission rod 5 and the transmission block 9 are pulled upward, and the transmission block 9 drives the first puncture element 11 and the second puncture element 12 to retract toward the radial inner end, and return to the initial state (i.e., closed state).

[0081] refer to Fig.23As shown, the operator pulls the puncture core assembly 100 out of the puncture hole as a whole, and the first and second ends of the suture 88 are moved out of the body cavity along with the puncture core assembly 100. After the puncture core assembly 100 is removed from the patient's body, the first and second ends of the suture 88 are tightened and knotted, and then the excess suture 88 is removed to complete the suturing of the puncture hole. As long as the subcutaneous tissue at the patient's puncture hole is sutured, the occurrence of puncture hole hernia can be effectively prevented; preferably, the knot is tied in the patient's dermis, so that the knot is located in the puncture hole and does not leak out of the patient's skin to prevent the knot from being touched after surgery. Because the fascia layer at the patient's subcutaneous tissue has been sutured, the puncture hole will not open, and the epidermis or dermis is easy to heal automatically. Preferably, the suture 88 is a suture that can be absorbed by the human body.

[0082] Based on the puncture core assembly 100 described above, the present invention further provides a puncture device 300. Fig.24 The puncture device 300 also includes a sleeve assembly 200. During puncture, the puncture core assembly 100 is inserted into the puncture sleeve assembly 200 and guides the sleeve assembly 200 into the patient's abdominal cavity to allow other surgical instruments to enter the patient's body for surgical operations. After the cutting and suturing operation is completed, the puncture device 300 of the present invention can also suture the puncture hole.

[0083] In summary, the puncture core assembly and the puncture device having the same according to the present invention do not need to expand the puncture hole or add additional surgical instruments. They can achieve the function of puncture to establish a channel for the stapler or other surgical instruments to enter the patient's body; they can also achieve suturing of the puncture hole in a narrow puncture hole, which can effectively avoid puncture hole hernia caused by the puncture hole in minimally invasive surgery. In addition, the suturing assembly and the puncture core assembly and the puncture device having the same according to the present invention have different positions of the suture needle when the suture needle does not penetrate the tissue and penetrates the tissue, and the distance D1 between the needle tips when the tissue is not penetrated is less than the distance D2 between the needle tips when the tissue is penetrated, which avoids the problem of too short suture line distance in the prior art.

[0084] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A puncture core assembly, comprising a puncture assembly and a suturing assembly, characterized in that: The suturing assembly comprises two suturing needles, two suturing thread carriers and suturing threads; the ends of the suturing threads are fixedly connected to the suturing thread carriers, the suturing needles comprise a first matching portion; the suturing thread carriers have a second matching portion; The puncture assembly includes a puncture rod assembly and a puncture end assembly, and the puncture rod assembly includes a suture needle channel for accommodating the suture needle and serving as a movement track for the suture needle; The puncture end assembly comprises a puncture element, wherein the puncture element comprises a receiving portion and a puncture tip, wherein the receiving portion is used to accommodate the suture carrier, and the puncture tip is used to puncture tissue; The puncture core assembly further includes a knob and a first inner rod assembly, wherein the first inner rod assembly includes a transmission block; in response to the rotation of the knob, the transmission block pushes the puncture element to open toward the radial outer end; The puncture core assembly also includes a second inner rod assembly and a suturing button, wherein the second inner rod assembly is at least partially located inside the puncture rod assembly; the second inner rod assembly is connected to the suturing needle, and in response to pressing the suturing button, the suturing button pushes the second inner rod assembly to move downward, and after the two suturing needles extend from the suturing needle channel and penetrate the tissue on the opposite side of the puncture hole, the first matching portion and the second matching portion cooperate with each other, so that each of the suturing needles is fixedly connected to the corresponding suture carrier; in response to the second inner rod assembly moving upward, the two suture needles are both received into the suture needle channel, and the two suture needles drive the suture carrier and the end of the suture to penetrate the tissue on the opposite side of the puncture hole again, thereby achieving suturing of the puncture hole, the penetration trajectory is the same as the re-penetration trajectory, and the penetration direction is opposite to the re-penetration direction.

2. The puncture core assembly according to claim 1, characterized in that: The first matching portion is a connecting portion, and the suturing needle comprises a needle tip, which is connected to one end of the connecting portion.

3. The puncture core assembly according to claim 2, characterized in that: The suturing needle further includes a main body, and the other end of the connecting part is arranged on the main body; the diameter of the connection between the needle tip and the connecting part is larger than the diameter of the remaining part of the connecting part, and the diameter of the remaining part of the connecting part is smaller than the diameter of the main body.

4. The puncture core assembly according to claim 3, characterized in that: The main body is in a curved shape.

5. The puncture core assembly according to claim 2, characterized in that: The second matching portion is a limiting member, and the suture carrier includes an axial through hole and a deformation piece, and the deformation piece is the limiting member, and the deformation piece is located at one end of the axial through hole.

6. The puncture core assembly according to claim 5, characterized in that: The suture carrier includes a plurality of deformable sheets, and a clearance groove is provided between each two of the deformable sheets.

7. The puncture core assembly according to claim 5, characterized in that: One end of the deformation piece is arranged on the inner surface of the wall of the axial through hole, and the other end of the deformation piece faces the central axis of the axial through hole.

8. The puncture core assembly according to claim 2, characterized in that: The suture carrier includes a radial through hole for fixing the end of the suture.

9. The puncture core assembly according to claim 1, characterized in that: The first matching part is a guide groove, and the suturing needle comprises a needle tip, a guide groove and a main body. The needle tip is located at the distal end of the main body, and the guide groove is located in the distal end region of the main body.

10. The puncture core assembly according to claim 9, characterized in that: The guide groove comprises a blocking portion, a retaining groove and an inlet end surface, wherein the inlet end surface is an inclined surface, the retaining groove is located between the blocking portion and the central axis of the main body, and an inlet space is formed between the inlet end surface and the blocking portion.

11. The puncture core assembly according to claim 9, characterized in that: The suture carrier is in a grid shape, including four peripheral edges, a plurality of longitudinal edges and a plurality of transverse edges, and the second matching portion is any one of the longitudinal edges or the transverse edges.

12. The puncture core assembly according to claim 11, characterized in that: The end of the suture thread is fixed on any longitudinal edge or transverse edge by knotting.

13. The puncture core assembly according to claim 9, characterized in that: The suture carrier is made of elastic material.

14. The puncture core assembly according to claim 1, characterized in that: The two ends of the suture are respectively fixedly connected to the two suture carriers.

15. The puncture core assembly according to claim 14, characterized in that: When the two suture needles are in the first position, the distance between the needle tips of the two suture needles is D1; ​​when the two suture needles are in the second position, the distance between the needle tips of the two suture needles is D2, and D1 <D2。 16. The puncture core assembly according to claim 15, characterized in that: The first position is an initial position, and the second position is a suturing position.

17. A puncture device, comprising a puncture sleeve assembly, characterized in that: The puncture device further comprises a puncture core assembly as claimed in claim 1, and the puncture core assembly can extend into the puncture sleeve assembly.

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