CN111374722A - A suture assembly and puncture core assembly and puncture device having the same - Google Patents

Abstract

A suture assembly for a suture hole includes a suture needle, a suture carrier and a suture; an end of the suture is fixedly connected to the suture carrier, the suture needle includes a first matching portion; the suture The carrier has a second matching part; after the suture needle penetrates the tissue on the opposite side of the hole, the first matching part is engaged with the second matching part, so that the suture needle and the suture thread carrier are fixed connected, 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, so as to realize the suture of the hole; the trajectory of the penetration is the same as the re-penetration The trajectory of the penetration is the same, the penetration is in the opposite direction to the re-penetration. The suture assembly can be applied to the puncture core assembly and the puncture device, so that the puncture device can realize both the puncturing function and the suturing function.

Description

A suture assembly and puncture core assembly and puncture device having the same

technical field

The invention relates to a surgical instrument, in particular to a suture assembly, a puncture core assembly and a puncture device having the same, and belongs to the field of medical equipment.

Background technique

Laparoscopic surgery has become widely accepted in surgical procedures and offers many advantages over traditional open surgery, including less injury, faster healing, and a reduced risk of infection. In abdominal examination, abdominal surgery and other minimally invasive or surgical procedures, the trocar is an essential surgical instrument. The trocar can establish an access channel in the chest wall or abdominal wall of the human body, so that staplers or other surgical instruments (such as endoscopes, scissors, guide wires, catheters, filters, stents, etc.) can enter the body cavity including the thoracic cavity and the abdominal cavity, and Provides passage of gas in and out to control the pneumoperitoneum required for surgery for examination or surgical procedures. A trocar is a surgical instrument used to establish an artificial channel into a body cavity in endoscopic surgery, and usually consists of a sealing sleeve assembly and a puncture core assembly. The general clinical use method is as follows: first make a small incision on the skin of the patient, then align the puncture end of the puncture device with the small incision and move the puncture device downward while reciprocating left and right. After the puncture device enters the body cavity, the puncture core The assembly can then be removed, leaving the sealing sleeve assembly as a passageway for the stapler or other surgical instrument to enter and exit the body cavity. The existing puncture core assembly only plays the role of puncturing, and is discarded after guiding the sealing sleeve assembly from the incision in the abdomen of the human body into the patient's body.

After the lesion is removed, the sealing sleeve assembly is taken out, and the operation is over. The puncture wound is generally not sutured, and only depends on the patient to heal automatically; because the puncture hole of the minimally invasive surgery is small and deep, especially the abdominal wall of the obese patient is thick and the suture field is small, only the skin on the patient's surface is sutured after the operation. Difficulty suturing the peritoneum inside the abdominal wall. In this way, patients are prone to serious complications such as puncture hernia after surgery, and further treatment is required. When the puncture hole of the patient must be sutured, especially the puncture hole of the obese patient, only a suture device specially designed to suture the puncture hole can be used, but this requires additional surgical instruments, the suture cost is high, and the surgical instruments are numerous and inconvenient to operate; In addition, the suturing device for suturing the puncture hole is complicated in structure and inconvenient to use.

SUMMARY OF THE INVENTION

In view of the deficiencies of the prior art, the present invention aims to provide a suture assembly and a puncture core assembly and a puncture device having the same, the suture assembly can realize the suture function; the puncture core assembly and the puncture device with the suture assembly not only have no puncture function , also has a stitching function. The present invention is achieved through the following technical solutions:

A suture assembly for a suture hole includes a suture needle, a suture carrier and a suture; an end of the suture is fixedly connected to the suture carrier, the suture needle includes a first matching portion; the suture The carrier has a second matching part; after the suture needle penetrates the tissue on the opposite side of the hole, the first matching part and the second matching part cooperate with each other, so that the suture needle and the suture carrier are fixed connected, 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, so as to realize the suture of the suture hole; the trajectory of the penetration is the same as that of the suture The trajectory of the re-penetration is the same, and the direction of the penetration is opposite to the direction of the re-penetration.

Preferably, the first matching portion is a connecting portion, the suture needle includes a needle tip, and the needle tip is connected to one end of the connecting portion. Preferably, the suture needle further comprises a main body part, and the other end of the connection part is disposed on the main body part; the diameter of the connection between the needle tip and the connection part is larger than the diameter of the rest of the connection part, so The diameter of the remaining portion of the connecting portion is smaller than the diameter of the main body portion.

Preferably, the body portion is curvilinear.

Preferably, the second matching part is a stopper, the suture carrier includes an axial through hole and a deformation piece, the deformation piece is the stopper, and the deformation piece is located in the axial through hole one end.

Preferably, the suture carrier includes a plurality of deformable pieces, and each two of the deformable pieces is provided with an escape groove.

Preferably, one end of the deformation piece is disposed 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.

Preferably, the suture carrier includes radial through holes for securing the ends of the suture.

Preferably, the first matching portion is a guide groove, the suture needle includes a needle tip, a guide groove and a body portion, the needle tip is located at the distal end of the body portion, and the guide groove is located at the distal end of the body portion area.

Preferably, the guide groove includes 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 portion, the inlet end face and the blocking portion An entrance space is formed in between.

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.

Preferably, the end of the suture is fixed on any longitudinal edge or transverse edge in a knotted manner.

Preferably, the suture carrier is made of elastic material.

Preferably, the suture assembly includes two of the suture needles and two of the suture carriers, and two ends of the suture are fixedly connected to the two suture carriers, respectively.

Preferably, 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 two suture needles The distance between the needle tips is D2, and D1<D2.

Preferably, the first position is an initial position, and the second position is a suture position.

An embodiment of the present invention also provides a puncture core assembly. The puncture core assembly includes a puncture assembly and any one of the above-mentioned suture assemblies, the puncture assembly includes a puncture rod assembly and a puncture end assembly, and the puncture rod assembly includes a puncture needle for accommodating the suture needle and a suture The suture needle channel of the needle movement track, the suture needle has a first matching portion, and the suture thread carrier has a second matching portion; the puncture end assembly includes a puncture element, and the puncture element includes a receiving portion and a puncture tip, the The accommodating portion is used for accommodating the suture carrier, and the puncturing tip is used for puncturing the tissue; when the suture is performed, after the suture needle protrudes from the suture needle channel and penetrates the tissue on the opposite side of the hole, The first matching part and the second matching part cooperate with each other, so that the suture needle is fixedly connected with the suture thread carrier, and the suture needle drives the suture thread carrier and the end of the suture thread to penetrate the suture thread again. The tissue on the opposite side of the hole is sutured.

An embodiment of the present invention further provides a puncture device including a puncture cannula assembly and the above-mentioned puncture core assembly, wherein the puncture core assembly can extend into the puncture cannula assembly.

According to the suturing assembly and the puncture core assembly and puncture device having the same of the present invention, there is no need to enlarge the puncture hole, nor to add additional surgical instruments, and can achieve the function of puncturing to establish a channel for staplers or other surgical instruments. It can enter the patient's body; it can also realize the suturing of the puncture hole in the narrow puncture hole, so as to effectively avoid the puncture hole hernia caused by the puncture hole in the minimally invasive operation.

Description of drawings

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

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

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

4a-4b are schematic structural diagrams of the first inner rod assembly according to the first embodiment of the present invention;

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

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

7 is a schematic structural diagram of a fixed block according to the first embodiment of the present invention;

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

9 is a schematic structural diagram of a transmission rod according to the first embodiment of the present invention;

10a-10b are schematic diagrams of the structure of the suture channel according to the first embodiment of the present invention;

11 is a schematic structural diagram of the puncture end assembly according to the first embodiment of the present invention;

12 is a schematic structural diagram of a suture needle according to the first embodiment of the present invention;

13 is a schematic structural diagram of a suture carrier according to the first embodiment of the present invention;

14 is a schematic diagram of the initial state of the puncture core assembly according to the first embodiment of the present invention;

15a-15d are schematic diagrams of the suturing process of the puncture core assembly according to the first embodiment of the present invention;

16 is a schematic diagram of the state of the suture thread when the puncture core assembly is taken out after being sutured according to the first embodiment of the present invention;

17 is a schematic structural diagram of a trocar according to the first embodiment of the present invention;

18 is a schematic structural diagram of a puncture end assembly according to a second embodiment of the present invention;

19 is a schematic structural diagram of a suture needle according to a second embodiment of the present invention;

19a is an enlarged schematic view of a guide groove and a needle tip of a suture needle according to an embodiment of the present invention;

20 is a schematic structural diagram of a suture carrier according to a second embodiment of the present invention;

21 is a schematic diagram of the initial state of the puncture core assembly according to the second embodiment of the present invention;

22a-22d are schematic diagrams of the suturing process of the puncture core assembly according to the second embodiment of the present invention;

23 is a schematic diagram of the state of the suture thread when the puncture core assembly is taken out after being sutured according to the second embodiment of the present invention;

24 is a schematic structural diagram of a trocar according to a second embodiment of the present invention.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings. In the description of the present invention, the terms "first" and "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention. As shown in FIG. 1 , the puncture core assembly 100 according to the embodiment of the present invention includes a puncture end assembly 1 , a puncture rod assembly 2 , a knob 31 and a suture 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 referred to as the "proximal end" or "upper", and the end away from the clinician, that is, the end close to the patient's body is referred to as the "distal end" or "below". Based on the orientation or positional relationship shown in FIG. 1, the end close to the suture button 41 is regarded as the “proximal end” or “above”, and the end close to the puncture end 1 is regarded as the “distal end” or “below”; The axial direction of the 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 of the central axis of the assembly 100 is considered "outside".

1 to 17 are structural diagrams of the first embodiment of the present invention.

As shown in FIG. 1 , 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 and a suture button 41 disposed at the proximal end of the puncture rod assembly 2 . As shown in FIGS. 2 to 5 , the puncture core assembly 100 further includes a first inner rod assembly 3 and a second inner rod assembly 4 , and FIG. 2 is a cross-sectional view of the puncture core assembly 100 according to the embodiment of the present invention, which depicts the puncture core assembly 100 composition and assembly relationships. The puncture core assembly 100 is sequentially composed of a second inner rod assembly 4 , a first inner rod assembly 3 and a puncture rod assembly 2 from the inside to the outside. At least a part of the second inner rod assembly 4 is located in the first inner rod assembly 3, and at least a part 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 first inner rod body The central axis of 30 and the central axis of the puncture rod body 20 are both coincident. At least a part 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 all the components of the second inner rod assembly 4 are located in the first inner rod assembly 3 .

FIG. 3 is a schematic structural diagram 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 components 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 the interior of the puncture rod body 20 includes a first channel 23 that penetrates up and down, and 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, 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 blocking surface The diameter of 26 is greater than the diameter of handle 24 . Two limiting protrusions 25 are symmetrically arranged on the outer wall of the handle 24 . In addition, the distal end of the puncture rod body 20 is further provided with a first installation hole 22 for fixed connection with the suture track 6 , and the puncture end assembly 1 is rotatably connected with the suture track 6 . The maximum diameter of the proximal end of the puncture end assembly 1 is approximately equal to the diameter of the puncture rod body 20, and the distal end thereof is the puncture tip.

Fig. 4a is a schematic structural diagram of the first inner rod assembly 3 according to an embodiment of the present invention, and Fig. 4b is an exploded schematic diagram thereof. The first inner rod assembly 3 includes a first inner rod body 30, a fixing block 32 fixedly connected with the proximal end of the first inner rod body 30, and a knob 31 rotatably connected with the fixing block 32; the first inner rod assembly 3 also includes a first inner rod assembly 3. An 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 is in contact with the distal end of the fixing block 32, and its distal end is in contact with the puncture rod body The upper surface of the blocking surface 26 of 20 abuts; the distal end of the first inner rod body 30 is fixedly connected with the proximal end of the transmission rod 5 , and the distal end of the transmission rod 5 is fixedly connected with the transmission block 9 . The inside of the first inner rod body 30 forms a second channel 34 that penetrates up and down. 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 .

As shown in FIG. 5 , the second inner rod assembly 4 includes a second inner rod body 40 and a suture button 41 fixedly connected to the proximal end of the second inner rod body 40 . The proximal end of the second inner rod body 40 is also symmetrically provided with two There are waist-shaped holes 42, and the pin shaft (not shown) penetrates through the waist-shaped holes 42 and is then 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 shaft, and the pin shaft can only move up and down in the waist-shaped hole 42; thus, the pin shaft restricts the second inner rod body 40 to the first inner rod body only It can move up and down within 30, but cannot rotate circumferentially. The distal end of the second inner rod body 40 includes a second through hole 45 that cooperates with the suture needle 7 , and the two waist-shaped holes 42 and the two suture 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 in sequence from near to far. The cross-sectional area of the second rod body 44 is smaller than that 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 that of the puncture rod body 20; when it is a cylinder, its diameter is smaller than that of the puncture rod body 20, and when it is a rectangular parallelepiped, its width and The lengths are all smaller than the diameter of the puncture rod body 20 . Preferably, the second rod body 44 is a rectangular parallelepiped, and a second elastic element 46 is provided outside the second rod body 44 . The proximal end abuts; 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 are all coincident.

Referring to FIG. 6 , the knob 31 is a hollow cylindrical shell, and a limiting groove 311 is provided on the side wall thereof. The limiting protrusion 25 of the puncture rod assembly 2 can move in the limiting groove 311 . Corresponding to the two limiting protrusions 25 , two limiting grooves 311 are provided on the side wall of the knob 31 . Each limiting slot 311 includes a first segment 311a, a second segment 311b and a third segment 311c in sequence from bottom to top, wherein the first segment 311a and the third segment 311c are linear, and the second segment 311b in the middle is curvilinear , the three sections of the limiting groove 311 are smoothly connected in sequence, and the overall shape is roughly "S". The first section 311a of the limiting groove 31 is the initial position, the inner side of the groove is provided with a first positioning key 3111, the second section 311b is the adjustment stroke position, 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 at the initial position or the end position, the first positioning key 3111 or the second positioning key 3112 are respectively used to fix the limiting protrusion 25 to prevent unintended movement, the first positioning key 3111 and The second positioning key 3112 is a protrusion with a smaller height. In order to facilitate the rotation of the knob 31, the outer surface of the knob 31 is provided with anti-skid lines 312 to increase the frictional force and thus play a role of anti-skid. The knob 31 is further provided with an annular hole wall 313 , the annular hole wall 313 surrounds the rotating shaft 321 of the fixing block 32 , and the lower surface of the annular hole wall 313 abuts the upper surface of the first step 322 of the fixing block 32 .

As shown in FIG. 2 or FIG. 7 , 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 diameter of the groove 323 , the diameter of the rotating shaft 321 , the first step The diameters of the 322 increase in sequence; the fixing block 32 further includes a first through hole 325 penetrating up and down. The proximal end of the first inner rod body 30 is symmetrically provided with a first installation hole (not shown), the outer wall below the first step 322 is symmetrically provided with a second installation hole (not shown), and the pin (not shown) After passing through the waist-shaped hole 42 of the second inner rod body 40 , it is fixedly connected to the first installation hole (not shown) of the first inner rod body 30 and the second installation 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 . The central axes of the inner rod bodies 40 coincide. Preferably, a blocking block is provided on the body structure of the fixing block 32 to prevent the knob 31 from moving upward relative to the fixing block 32 .

The distal end of the puncture rod body 20 is symmetrically provided with two through grooves, and the lower end of the through grooves extends to the lower end of the puncture rod body 20 and is roughly in a "U" shape, forming a second receiving portion (not shown), the second receiving The part forms part of the trajectory of the movement of the suture needle 7 . 8 is a schematic structural diagram of the first inner rod body 30 according to an embodiment of the present invention, the second channel 34 is not a substantially rectangular groove at the distal end of the first inner rod body 30 , and the second rod body of the second inner rod body 40 44 is located in the rectangular groove, and the distal end of the first inner rod body 30 further includes a blind hole 36 . Preferably, blind holes 36 are symmetrically provided on both sides of the second passage 34 for connecting with the transmission rod 5 . Referring to FIG. 9 , the proximal end of the transmission rod 5 includes a transmission rod body 52 and a mounting end 51 , preferably, includes two mounting ends 51 ; the two mounting ends 51 are symmetrically arranged at the proximal end of the transmission rod body 52 . The two installation ends 51 are respectively installed 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 with the transmission block 9 . Preferably, the transmission rod 5 is integrally formed.

10a-10b are schematic diagrams of the structure of the suture track 6 . The suture track 6 is fixedly connected with the distal end of the puncture rod body 20 for providing a movement channel of the suture needle 7 . The suturing track 6 includes a third accommodating portion 63 and an accommodating space 64. The accommodating space 64 is located between the distal end of the suture needle channel 61 and the third accommodating portion 63, and is used for accommodating and fixing the target tissue to be sutured. The puncture end assembly 1 is rotatably connected in the third receiving portion 63 . In one embodiment of the present invention, referring to FIG. 10b , the interior of the suture track 6 is provided with a suture needle channel 61 and a transmission channel 62; Rod channel 621 and transmission block channel 622, 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, 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 passages 61 are symmetrically arranged along the transmission passage 621 ; correspondingly, the suture track 6 includes two third accommodating portions 63 and two accommodating spaces 64 . The suture needle channel 61 extends in a curve, 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 the side thereof, and is located above the accommodating space 64 .

As shown in FIG. 11 and FIG. 3 , 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 , and the puncture tip 13 is generally conical. The puncture tip 13 is in a conical shape or similar to a conical shape, that is, the generatrix of the puncture tip 13 may be a straight line, a convex curve or a concave curve. The second puncturing element 12 can be accommodated in the first puncturing element 11 . The part 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 . Disposing the puncturing tip 13 on one puncturing element instead of forming the tip jointly by two puncturing elements can improve the strength of the part where the puncturing tip 13 is located, which is beneficial to exert force on the tip and thus facilitate puncturing. The proximal ends of the first puncture element 11 and the second puncture element 12 are both provided with a rotating shaft 17, and the guide surface 18 of the rotating shaft 17 is an arc surface, preferably, the guide surface 18 is a circular arc surface; further, the guide surface 18 It is a quarter arc surface. The junction between the first puncturing element 11 and the guide surface 18 is the first end surface 112 , and the junction between the second puncturing element 12 and the guide surface 18 is the second end surface 122 . As shown in FIG. 11 , when the first piercing element 11 and the second piercing element 12 are in an open state, the first end surface 112 and the second end surface 122 face each other. As shown in FIG. 3 , when the first piercing element 11 and the second piercing element 12 are in a closed state, the first end surface 112 and the second end surface 122 are juxtaposed and at the same level. The upper end surface of the puncturing tip 13 is the first plane 113 , and the lower end surface of the second puncturing element 12 is the second plane 123 . The second plane 123 has the same shape and size as the first plane 113 . As shown in FIG. 3 , when the first piercing element 11 and the second piercing element 12 are in the closed state, the second plane 123 is located above the first plane 113 . The guide surface 18 is used for abutting and matching with the transmission block 9 .

The side wall of the first piercing element 11 is provided with a first receiving portion 116 for receiving the suture carrier 8 and the first end of the suture 88 and allowing 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 piercing element 12 for receiving the suture carrier 8 and the second end of the suture 88 and allowing the needle tip 71 of another suture needle 7 to enter and exit. The first accommodating portion 116 and the second accommodating portion 126 have the same shape, structure and function. For the sake of brevity and clarity, the present invention only describes the connection between the first accommodating portion 116 and the suture carrier 8 and the suture 88 . With continued reference to FIG. 15a , the piercing tip 13 also includes a receiving slot 118 that receives the body of the suture 88 . The accommodating groove 118 communicates with at least a part of the first plane 113 . A connecting channel 117 is formed between the first accommodating portion 116 and the accommodating groove 118 , and the connecting channel 117 is used for accommodating the suture line 88 of the seam portion.

FIG. 12 is a schematic structural diagram of the suture needle 7 according to an embodiment of the present invention. The suture needle 7 includes a needle tip 71 , a main body portion 72 , a connecting portion 73 and an end portion 74 . The connecting portion 73 may also be referred to as a first matching portion for the fixed connection of the suture needle 7 and 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 provided on the main body portion 72 . The diameter of the connecting portion of the connecting portion 73 connected to the needle tip 71 is larger than that of the rest of the connecting portion 73 , and the diameter of the remaining portion of the connecting portion 73 is smaller than the diameter of the main body portion 72 . The connection portion 73 is specifically a connection post. The main body portion 72 is in a curved shape, further in an arc shape, specifically in a circular arc shape. The shape of the body portion 72 conforms to the suture needle channel 61 of the suture track 6 in which the suture needle 7 is accommodated and moved. Preferably, the channel diameter of the suture needle channel 61 is larger than the diameter of the body portion 72 of the suture needle 7 and the diameter of the suture carrier 8, thereby reducing the resistance to movement of the suture needle 71 within the suture needle channel 61 and allowing the suture needle 7 into the suture needle channel 61 with the suture 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 .

FIG. 13 is a schematic structural diagram of a suture carrier 8 according to an embodiment of the present invention. The suture carrier 8 is substantially cylindrical, and the shape of the suture carrier 8 is consistent with the shape of the first accommodating portion 116 (or the second accommodating portion 126 ). The suture carrier 8 includes an axial through hole 85 , a plurality of deformable pieces 81 , a plurality of escape slots 82 and a radial through hole 83 . Axial through hole 85 is used to allow passage of suture needle 7 and to accommodate suture thread 88 . There is an escape slot 82 between each two deformation pieces 81 . The deformation piece 81 and the escape 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 deformation piece 81 also includes an inclined surface 810 , the inclined surface 810 is located at one end of the deformation piece 81 close to the central axis of the axial through hole 85 , and the other end of the deformation piece 81 is disposed 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 deformation piece 81 is flat, which is easy to catch the connecting part 73 of the suture needle 7 . Thus, the deformable piece 81 constitutes a stopper for limiting the suture needle 7 . The limiting member 81 may also be referred to as a second matching portion, and is used to cooperate with the first matching portion of the suture needle 7 , so that the suture needle 7 and the suture thread carrier 8 are fixedly connected. The accommodating grooves 82 on both sides of the deformation piece 81 effectively provide the elastic margin and deformation space required during the deformation process of the deformation piece 81 . The radial through holes 83 are used to secure either the first end or the second end of the suture 88 .

14 is a schematic diagram of the initial state (ie, the closed state) of the puncture end 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 a 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 , and the second end of the suture 88 is connected to the suture carrier 8 . The suture thread carrier 8 located in the second receiving portion 126 is fixedly connected, and the main body of the suture thread 88 is located in the receiving groove 118 of the puncture tip 13 . Referring to FIG. 2 , the two suture needles 7 are respectively located in their respective suture needle channels 61 and are in a state of not piercing the tissue. It is defined that the suture needle 7 at this time is in the first position, that is, 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 just the diameter of the puncture end assembly 1 (equivalent to the diameter of the puncture hole).

Figure 15a shows the first piercing element 11 and the second piercing element 12 of the piercing end assembly 1 in an open state. From the closed state of the puncture end assembly 1 in FIG. 14 to the open state of the puncture end assembly 1 in FIG. 15a, the operator rotates the knob 31 so that the protrusion 25 moves along the path of the limiting groove 311. The initial position of the handle 24 is moved to the end position at the handle 24 shown in Figure 15a. 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 down to move downward, and the transmission block 9 pushes the first puncture element 11 and the second puncture element 12 to stretch toward the radially outer ends respectively. open. After the first piercing element 11 and the second piercing element 12 are opened, the main body of the suture 88 originally located in the accommodating groove 118 falls out of the accommodating groove 118 . The operator lifts the piercing core assembly 100 upward as a whole until the first piercing element 11 and the second piercing element 12 directly contact the fascia layer of the tissue.

FIG. 15b is a schematic diagram of the state in which the two suture needles 7 enter the first accommodating portion 116 and the second accommodating portion 126 respectively, and FIG. 15c is a cross-sectional view of FIG. 15b . From the open state of the puncture end assembly 1 in FIG. 15 a to the state in which the suture needle 7 enters the receiving portion in FIG. 15 b , the operator presses the button 41 , and the button 41 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 protrude toward the radially outer end along the suture needle channel 61 of the suture track 6 . With reference to FIG. 16 , 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 track of the suture needle 7 . When the suture needle 7 protrudes toward the radially outer end, the needle tip 71 of the suture needle 7 protrudes into the axial through holes 85 of the suture thread 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 caught by the stopper of the suture carrier 8 . 15c, the suture needle 7 is in the state of penetrating the tissue, it is defined that the suture needle 7 is in the second position, namely the suture position, and the distance between the needle tips 71 of the two suture needles 7 is the second distance D2. Wherein, the first distance D1 is smaller than the second distance D2. The second distance D2 is the distance from the end of the suture needle penetrating the tissue fascia layer, and the distance from the end is greater than the diameter of the puncture end component (equivalent to the diameter of the puncture hole), which is beneficial for the suture thread to not be too close to the puncture hole during the tensioning process. There is a risk of cutting the tissue to be sutured, resulting in failure of the suture.

When the operator releases the button 41 , under the action of the restoring force of the second elastic element 46 , the second inner rod assembly 4 moves upward, driving the suture needle 7 along the suture needle channel 61 of the suture track 6 toward the radially inner end Move and retract into needle channel 61 again. Since the connecting portion 73 is caught by the limiting portion 810 of the suture carrier 8 , when the suture needle 7 is retracted, the suture needle 7 drives the suture carrier 8 into the suture needle channel 61 together. 16, the radial through hole 83 of the suture carrier 8 is fixed with the first end or the second end of the suture 88. After the suture carrier 8 enters the suture needle channel 61, part of the suture 88 passes through The fascia layer channel is formed by puncturing the fascia layer by the suture needle 7 .

Fig. 15d is a schematic view of the puncture core assembly returning to the initial state (ie, the closed state) again. After the operator releases the button 41, after the suture needle 7 and the suture thread carrier 8 enter the suture channel 61, the operator reversely rotates the knob 31, and the protrusion 25 moves in the reverse direction along the path of the limiting groove 311, and pulls the transmission rod. 5 and the transmission block 9 move upward, and the transmission block 9 drives the first piercing element 11 and the second piercing element 12 to retract toward the radial inner end and restore to the initial state (ie, the closed state) again.

Referring to FIG. 16 , 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 move out of the body cavity along with the puncture core assembly 100 . After the puncture core assembly 100 is separated from the patient's body, the first end and the second end of the suture thread 88 are tightened and knotted, and the redundant suture thread 88 is removed, that is, the suturing of the puncture hole is completed. As long as the subcutaneous tissue at the puncture hole of the patient is sutured, the occurrence of the puncture hole hernia can be effectively prevented; After encountering the knot, because the fascia layer at the subcutaneous tissue of the patient has been sutured, the puncture hole will not be opened, and the epidermis or dermis will heal automatically. Preferably, the suture 88 is a human absorbable suture.

Based on the puncture core assembly 100 as described above, the present invention also provides a puncture device 300 . Referring to FIG. 17 , the trocar 300 further includes a cannula assembly 200. During puncturing, the puncture core assembly 100 is inserted into the puncture cannula assembly 200 and guides the cannula assembly 200 into the abdominal cavity of the patient for other surgical instruments to enter the patient's body. In the operation, after the cutting and suturing operation, the puncture device 300 of the present invention can also sew the puncture hole.

18 to 24 are drawings of the second embodiment of the present invention. Since the puncture rod assembly of the puncture core rod assembly 100 according to the second embodiment of the present invention, the knob and the suture button disposed at the proximal end of the puncture rod assembly are the same as the structures described in FIG. 1 to FIG. 10b of the first embodiment of the present invention, this It is not repeated here. Only the puncture end assembly 1 in the second embodiment and the entire suturing process will be described in detail herein.

As shown in FIG. 18 , the piercing end assembly 1 includes a first piercing element 11 and a second piercing element 12 , the first piercing element 11 includes a piercing tip 13 , the piercing tip 13 is generally conical, and the generally conical shape refers to the piercing tip 13 It is conical or similar, that is, the generatrix of the puncturing tip 13 can be a straight line, a convex curve or a concave curve. The second puncturing element 12 can be accommodated in the first puncturing element 11 . The part 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 . Disposing the puncturing tip 13 on one puncturing element instead of forming the tip jointly by two puncturing elements can improve the strength of the part where the puncturing tip 13 is located, which is beneficial to exert force on the tip and thus facilitate puncturing. The proximal ends of the first puncture element 11 and the second puncture element 12 are both provided with a rotating shaft 17, and the guide surface 18 of the rotating shaft 17 is an arc surface, preferably, the guide surface 18 is a circular arc surface; further, the guide surface 18 It is a quarter arc surface. The junction between the first puncturing element 11 and the guide surface 18 is the first end surface 112 , and the junction between the second puncturing element 12 and the guide surface 18 is the second end surface 122 . As shown in FIG. 11 , when the first piercing element 11 and the second piercing element 12 are in an open state, the first end surface 112 and the second end surface 122 face each other. Referring to FIG. 3 , when the first piercing element 11 and the second piercing element 12 are in a closed state, the first end surface 112 and the second end surface 122 are juxtaposed and at the same level. The upper end surface of the puncturing tip 13 is the first plane 113 , and the lower end surface of the second puncturing element 12 is the second plane 123 . The second plane 123 has the same shape and size as the first plane 113 . Referring to FIG. 3 , when the first piercing element 11 and the second piercing element 12 are in a closed state, the second plane 123 is located above the first plane 113 . The guide surface 18 is used for abutting and matching with the transmission block 9 .

The side wall of the first piercing element 11 is provided with a first receiving portion 116 for receiving the suture carrier 8 and the first end of the suture 88 and allowing 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 piercing element 12 for receiving the suture carrier 8 and the second end of the suture 88 and allowing the needle tip 71 of another suture needle 7 to enter and exit. A fixing unit 116 a for fixing the suture carrier 8 is provided at the entrance of the first accommodating part 116 . The fixing unit 116a may specifically be a groove and a protrusion having the same grid spacing as the suture carrier 8 . When the suture carrier 8 is not subjected to external force, the end of the grid in the suture carrier 8 is fixed at the entrance of the first accommodating part 116 through the cooperation of the groove and the protrusion; When the interior of the accommodating portion 116 faces an external force, the suture carrier 8 is disengaged from the entrance of the first accommodating portion 116 . The first accommodating portion 116 and the second accommodating portion 126 have the same shape, structure and function. For the sake of brevity and clarity, the present invention only describes the connection between the first accommodating portion 116 and the suture carrier 8 and the suture 88 . With continued reference to FIG. 15a , the piercing tip 13 also includes a receiving slot 118 that receives the body of the suture 88 . The accommodating groove 118 communicates with at least a part of the first plane 113 . A connecting channel 117 is formed between the first accommodating portion 116 and the accommodating groove 118 , and the connecting channel 117 is used for accommodating the suture line 88 of the seam portion.

FIG. 19 is a schematic structural diagram 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 portion 72 , a guide groove 73 and an end portion 74 . The needle tip 71 is located at one end of the main body portion 72 , and the main body portion 72 is provided with a guide groove 73 . The main body portion 72 has a curved shape, further an arc shape, specifically a circular arc shape. The shape of the main body portion 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 to the movement of 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 carrier 8 after being collapsed. The movement trajectory of the needle tip 71 is the same as that of the main body portion 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 .

Continuing to refer to FIG. 19 a , the guide groove 73 includes a blocking portion 733 , a retention groove 735 and an inlet end face 731 . The inlet end surface 731 is a surface formed by obliquely cutting the body portion 72 from the outer peripheral surface of the body portion 72 toward the needle tip 71 and toward the central axis of the body portion 72, and then cutting out an indwelling groove 735 in the body portion 72 along the direction of the center axis. A blocking portion 733 is left between the indwelling groove 735 and the outer peripheral surface of the main body portion 72 , and an inlet space 737 is formed between the blocking portion 733 and the inlet end surface 731 . The indwelling groove 735 is used for indwelling the connecting portion of the suture carrier 8 . The inlet end surface 731 is an inclined surface, which is convenient for the connecting portion of the suture carrier 8 to enter the indwelling groove 735 . The guide groove 73 may also be referred to as a first matching portion.

FIG. 20 is a schematic structural diagram 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 substantially rectangular, and the shape of the suture carrier 8 is consistent with the shape of the first accommodating portion 116 (or the second accommodating portion 126 ). The suture carrier 8 includes four peripheral ribs 81 , a plurality of longitudinal ribs 83 and a plurality of transverse ribs 82 . The longitudinal ribs 83 and the transverse ribs 82 intersect each other. Each longitudinal edge 83 is connected to each other with the four peripheral edges 81 , and each transverse edge 82 is connected to each other with 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. Each of the longitudinal edges 83 , the transverse edges 81 and the four peripheral edges 81 form a plurality of square spaces 85 (ie, grids). Both the length and width of the checkered space 85 are slightly smaller than the diameter of the main body portion 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 accommodating portion 116 or the second accommodating portion 126 , the suture carrier 8 is in a slightly tight state. The end of the suture line 88 can be fixed on any one of the longitudinal edges 83 or the transverse edges 82, and the specific fixing method can be knotted. The respective transverse ribs 82 and longitudinal ribs 83 may collectively be referred to as a connection of the suture carrier 8 . The connecting portion may also be referred to as the second matching portion. As known to those skilled in the art, the shapes of the suture carrier 8 and the first accommodating portion 116 (or the second accommodating portion 126 ) can also be set to other shapes, such as a circle, a square, or other polygons.

FIG. 21 is a schematic diagram of the initial state (ie, the closed state) of the piercing end 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 a 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 , and the second end of the suture 88 is connected to the suture carrier 8 . The suture thread carrier 8 located in the second receiving portion 126 is fixedly connected, and the main body of the suture thread 88 is located in the receiving groove 118 of the puncture tip 13 . Referring to Fig. 2 for reference, the two suture needles 7 are respectively located in their respective suture needle channels 61, and are in a state of not piercing the tissue. It is defined that the suture needle 7 at this time is in the first position, that is, the 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, that is, the first distance D1.

Figure 22a shows the first piercing element 11 and the second piercing element 12 of the piercing end assembly 1 in an open state. From the closed state of the puncture end assembly 1 in FIG. 21 to the open state of the puncture end assembly 1 in FIG. 22a, the operator rotates the knob 31 so that the protrusion 25 moves along the path of the limiting groove 311. The initial position of the handle 24 is moved to the end position at the handle 24 shown in Figure 22a. 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 down to move downward, and the transmission block 9 pushes the first puncture element 11 and the second puncture element 12 to stretch toward the radially outer ends respectively. open. After the first piercing element 11 and the second piercing element 12 are opened, the main body of the suture 88 originally located in the accommodating groove 118 falls out of the accommodating groove 118 . The operator lifts the piercing core assembly 100 upward as a whole until the first piercing element 11 and the second piercing element 12 directly contact the fascia layer of the tissue.

FIG. 22b is a schematic view of the state in which the two suture needles 7 enter the first accommodating portion 116 and the second accommodating portion 126 respectively, and FIG. 22c is a cross-sectional view of FIG. 22b. From the open state of the puncture end assembly 1 in Fig. 22a to the state in which the suture needle 7 enters the receiving portion in Fig. 22b, the operator presses the button 41, the button 41 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 protrude toward the radially outer end along the suture needle channel 61 of the suture track 6 . With reference to FIG. 23 , 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 radially outer end, the needle tip 71 of the suture needle 7 extends into the square space 85 of the suture thread carrier 8 located in the first receiving part 116 and the second receiving part 126 respectively, so that the suture thread A transverse edge 82 or longitudinal edge 83 of the carrier 8 enters the guide groove 73 of the suture needle 7 . Referring to Figure 22c, the suture needle 7 is in the state of penetrating the tissue, it is defined that the suture needle 7 is in the second position, namely the suture position, and the distance between the needle tips 71 of the two suture needles 7 is the second distance D2. Wherein, the first distance D1 is smaller than the second distance D2. The second distance D2 is the distance from the end of the suture needle penetrating the tissue fascia layer, and the distance from the end is greater than the diameter of the puncture end component (equivalent to the diameter of the puncture hole), which is beneficial for the suture thread to not be too close to the puncture hole during the tensioning process. There is a risk of cutting the tissue to be sutured, resulting in failure of the suture.

When the operator releases the button 41 , under the action of the restoring force of the second elastic element 46 , the second inner rod assembly 4 moves upward, driving the suture needle 7 along the suture needle channel 61 of the suture track 6 toward the radially inner end Move and retract into needle channel 61 again. Since a transverse edge 82 or longitudinal edge 83 of the suture carrier 8 is located in the guide groove 77 and blocked by the blocking portion 733 , when the suture needle 7 is retracted, the suture needle 7 drives the suture carrier 8 into the suture needle channel 61 together. The suture carrier 8 is made of elastic material. When the suture carrier 8 is pulled out of the first receiving portion 116 or the second receiving portion 126 under the pulling of the suture needle 7, the volume of the suture carrier 8 becomes smaller immediately, so as to be sufficient into the suture needle channel 61 . 16 , 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 is formed by puncturing the fascia layer by the suture needle 7 .

Fig. 22d is a schematic view of the puncture core assembly returning to the initial state (ie, the closed state) again. After the operator releases the button 41, after the suture needle 7 and the suture thread carrier 8 enter the suture channel 61, the operator reversely rotates the knob 31, and the protrusion 25 moves in the reverse direction along the path of the limiting groove 311, and pulls the transmission rod. 5 and the transmission block 9 move upward, and the transmission block 9 drives the first piercing element 11 and the second piercing element 12 to retract toward the radial inner end and restore to the initial state (ie, the closed state) again.

Referring to FIG. 23 , 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 move out of the body cavity along with the puncture core assembly 100 . After the puncture core assembly 100 is separated from the patient's body, the first end and the second end of the suture thread 88 are tightened and knotted, and the redundant suture thread 88 is removed, that is, the suturing of the puncture hole is completed. As long as the subcutaneous tissue at the puncture hole of the patient is sutured, the occurrence of the puncture hole hernia can be effectively prevented; After encountering the knot, because the fascia layer at the subcutaneous tissue of the patient has been sutured, the puncture hole will not be opened, and the epidermis or dermis will heal automatically. Preferably, the suture 88 is a human absorbable suture.

Based on the puncture core assembly 100 as described above, the present invention also provides a puncture device 300 . Referring to FIG. 24 , the trocar 300 further includes a cannula assembly 200. During puncturing, the puncture core assembly 100 is inserted into the puncture cannula assembly 200, and guides the cannula assembly 200 into the abdominal cavity of the patient, so that other surgical instruments can enter the patient's body. In the operation, after the cutting and suturing operation, the puncture device 300 of the present invention can also sew the puncture hole.

To sum up, according to the puncture core assembly of the present invention and the puncture device having the same, there is no need to enlarge the puncture hole, nor to add additional surgical instruments, and can achieve the function of puncturing to establish a channel for staplers or other surgical The surgical instrument enters the patient's body; the puncture hole can be sutured in the narrow puncture hole, and the puncture hole hernia caused by the minimally invasive surgical puncture hole can be effectively avoided. In addition, the suture assembly of the present invention, the puncture core assembly and the puncture device with the suture needle have different positions in the unpierced tissue and the pierced tissue through the suture needle, and the distance D1 between the needle tips when the tissue is not pierced is smaller than the distance between the needle tips when the tissue is penetrated. D2, avoids the problem that the suture distance is too short in the prior art.

Although the embodiments of the present invention have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present invention. Embodiments are subject to variations, modifications, substitutions and variations.

Claims (18)

1. A suturing assembly for suturing a hole, comprising a suturing needle, a suture carrier and a suture; the end of the suture is fixedly connected with the suture carrier, and the suture needle comprises a first matching part; the suture carrier has a second mating portion; after the suture needle penetrates through the tissue on the opposite side of the hole, the first matching part and the second matching part are matched with each other, so that the suture needle is fixedly connected with the suture line carrier, and the suture needle drives the suture line carrier and the end part of the suture line to penetrate through the tissue on the opposite side of the hole again, so that the suture hole is sutured; the trajectory of the penetration is the same as the trajectory of the re-penetration, the direction in which the penetration is opposite to the direction in which the re-penetration is performed.

2. The suturing assembly for suturing a hole of claim 1, wherein the first mating portion is a connecting portion and the suturing needle includes a needle tip, the needle tip being connected to one end of the connecting portion.

3. The suturing assembly for suturing a hole of claim 2, wherein the suturing needle further comprises a body portion, the other end of the connecting portion being disposed to the body portion; the diameter of the connecting part of the needle tip and the connecting part is larger than that of the rest part of the connecting part, and the diameter of the rest part of the connecting part is smaller than that of the main body part.

4. The suturing assembly for suturing a hole of claim 3, wherein the body portion is curvilinear.

5. The suturing assembly for suturing a hole according to claim 2, wherein said second mating portion is a retainer, said suture carrier includes an axial through hole and a shape-changing tab, said shape-changing tab being said retainer, said shape-changing tab being located at one end of said axial through hole.

6. A suturing assembly for suturing a hole according to claim 5, wherein the suture carrier includes a plurality of shape-changing tabs, each of which has an offset slot disposed therebetween.

7. A suturing assembly for suturing a hole according to claim 5, wherein one end of the shape-changing strip is arranged on the inner surface of the wall of the axial through hole and the other end of the shape-changing strip is directed towards the central axis of the axial through hole.

8. A suturing assembly for suturing a hole according to claim 2, wherein the suture carrier includes a radial through hole for securing an end of the suture.

9. The suturing assembly for suturing a hole according to claim 1, wherein the first mating portion is a guide slot, the suturing needle comprising a needle tip, a guide slot and a body portion, the needle tip being located at a distal end of the body portion, the guide slot being located at a distal end region of the body portion.

10. The suturing assembly for suturing a hole of claim 9, wherein the guide slot includes a stop portion, an indwelling slot, and an entry end surface, the entry end surface being sloped, the indwelling slot being located between the stop portion and the central axis of the body portion, the entry end surface and the stop portion defining an entry space therebetween.

11. A suturing assembly for suturing a hole according to claim 9, wherein the suture thread carrier is grid-shaped, including a peripheral edge, a plurality of longitudinal edges and a plurality of transverse edges, the second mating portion being either one of the longitudinal edges or the transverse edges.

12. A suture assembly for puncture according to claim 11, wherein the ends of the suture thread are fixed to either one of the longitudinal or transverse edges by knotting.

13. A suture assembly for puncture according to claim 9, wherein the suture carrier is made of an elastic material.

14. A suturing assembly for suturing a hole according to claim 1, including two suture needles and two suture carriers, the suture being fixedly connected at each end thereof.

15. The suturing assembly for suturing a hole of claim 14, wherein the distance between the needle tips of the two suture needles when in the first position is D1; when the two suture needles are in the second position, the distance between the needlepoints of the two suture needles is D2, and D1 < D2.

16. The suturing assembly for suturing a hole of claim 15, wherein the first position is an initial position and the second position is a suturing position.

17. A puncture core assembly comprising a puncture assembly and the suture assembly of any one of claims 1 to 16, wherein the puncture assembly comprises a puncture rod assembly and a puncture tip assembly, the puncture rod assembly comprises a suture needle channel for accommodating the suture needle and serving as a motion track of the suture needle, the suture needle has a first matching portion, the suture carrier has a second matching portion;

the piercing end assembly comprises a piercing element comprising a receptacle for receiving the suture carrier and a piercing tip for piercing tissue;

when suturing is carried out, after the suture needle extends out of the suture needle channel and penetrates through tissues on the opposite side of the hole, the first matching part and the second matching part are matched with each other, so that the suture needle is fixedly connected with the suture line carrier, and the suture needle drives the suture line carrier and the end part of the suture line to penetrate through the tissues on the opposite side of the hole again, so that the hole is sutured.

18. A puncture instrument comprising a puncture cannula assembly, wherein the puncture instrument further comprises a puncture core assembly according to claim 17, which is extendable into the puncture cannula assembly.

Images