CN111374722A - Suture assembly, puncture core assembly with suture assembly and puncture device - Google Patents
Suture assembly, puncture core assembly with suture assembly and puncture device Download PDFInfo
- Publication number
- CN111374722A CN111374722A CN201910182582.2A CN201910182582A CN111374722A CN 111374722 A CN111374722 A CN 111374722A CN 201910182582 A CN201910182582 A CN 201910182582A CN 111374722 A CN111374722 A CN 111374722A
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- suture
- assembly
- suturing
- puncture
- needle
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- 230000013011 mating Effects 0.000 claims abstract description 11
- 230000035515 penetration Effects 0.000 claims abstract description 8
- 230000033001 locomotion Effects 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 239000013013 elastic material Substances 0.000 claims description 4
- 239000000969 carrier Substances 0.000 claims description 3
- 239000000306 component Substances 0.000 abstract description 7
- 239000008358 core component Substances 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 38
- 210000001519 tissue Anatomy 0.000 description 21
- 238000000034 method Methods 0.000 description 13
- 230000000903 blocking effect Effects 0.000 description 11
- 210000003195 fascia Anatomy 0.000 description 10
- 230000000149 penetrating effect Effects 0.000 description 7
- 206010019909 Hernia Diseases 0.000 description 5
- 210000000683 abdominal cavity Anatomy 0.000 description 5
- 238000001356 surgical procedure Methods 0.000 description 5
- 210000004207 dermis Anatomy 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 4
- 206010033675 panniculitis Diseases 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 210000003491 skin Anatomy 0.000 description 4
- 210000004304 subcutaneous tissue Anatomy 0.000 description 4
- 210000003815 abdominal wall Anatomy 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 3
- 238000002324 minimally invasive surgery Methods 0.000 description 3
- 238000009958 sewing Methods 0.000 description 3
- 238000002674 endoscopic surgery Methods 0.000 description 2
- 210000002615 epidermis Anatomy 0.000 description 2
- 208000005646 Pneumoperitoneum Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000004303 peritoneum Anatomy 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000000115 thoracic cavity Anatomy 0.000 description 1
- 210000000779 thoracic wall Anatomy 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0469—Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B17/3421—Cannulas
Abstract
A suturing assembly for suturing a hole includes 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 is clamped with the second matching part, 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 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. The stitching component can be applied to the puncture core component and the puncture outfit, so that the puncture outfit can realize both the puncture function and the stitching function.
Description
Technical Field
The invention relates to a surgical instrument, in particular to a suture assembly, a puncture core assembly with the suture assembly and a puncture outfit with the suture assembly, and belongs to the field of medical equipment.
Background
Endoscopic surgery has become widely accepted in surgical procedures and has many advantages over traditional open surgery, including reduced trauma, faster healing, and reduced risk of infection. In abdominal cavity examination, abdominal cavity operation and other minimally invasive or surgical operations, a puncture outfit is an indispensable surgical instrument. The puncture instrument may establish an access channel in the chest or abdominal wall of the body for the entry of a stapler or other surgical instrument (e.g., endoscope, scissors, guide wire, catheter, filter, stent, etc.) into the body cavity, including the thoracic and abdominal cavities, and provide a passage for the ingress and egress of gas to control the pneumoperitoneum required for the procedure to be performed for the examination or surgical procedure. The puncture instrument is a surgical instrument used for establishing a manual passage into a body cavity in endoscopic surgery, and generally consists of a sealing sleeve assembly and a puncture core assembly. The general clinical use mode is as follows: firstly, a small opening is cut on the skin of a patient, then the puncture end of the puncture outfit is aligned with the small cut which is cut, the puncture outfit is moved downwards while rotating left and right in a reciprocating way, after the puncture outfit enters a body cavity, the puncture core component can be taken away, and the sealing sleeve component is left to be used as a passage for the anastomat or other surgical instruments to enter and exit the body cavity. The existing puncture core assembly only plays a role in puncture, and is discarded after a guide sealing sleeve assembly enters a patient body from an incision of the human abdomen.
And (4) removing the focus, taking out the sealing sleeve component assembly, and finishing the operation. The punctured wound is generally not sutured and is automatically healed only by the patient; because the puncture hole of the minimally invasive surgery is small and deep, particularly, the abdominal wall of an obese patient is thick, the visual field of the suture is small, the skin on the surface of the patient is only sutured after the surgery, and the peritoneum on the inner side of the abdominal wall is difficult to suture. Such patients are prone to serious complications such as hernia in the puncture hole after surgery, and require further treatment. When the puncture holes of patients need to be sutured, especially the puncture holes of fat patients, only a suturing device special for suturing the puncture holes can be used, but surgical instruments are additionally added, the suturing cost is high, the surgical instruments are multiple, and the operation is inconvenient; in addition, the suturing device specially used for suturing the puncture hole has a complex structure and is inconvenient to use.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a suturing assembly, a puncture core assembly with the same and a puncture outfit with the same, wherein the suturing assembly can realize the suturing function; the puncture core assembly and the puncture outfit with the suture assembly have not only no puncture function but also suture function. The invention is realized by the following technical scheme:
a suturing assembly for suturing a hole includes 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.
Preferably, the first matching part is a connecting part, and the suture needle comprises a needle tip connected with one end of the connecting part. Preferably, the suture needle further comprises a body portion, and the other end of the connecting portion is provided 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.
Preferably, the body portion is curvilinear.
Preferably, the second matching portion is a limiting part, the suture thread carrier comprises an axial through hole and a deformation piece, the deformation piece is the limiting part, and the deformation piece is located at one end of the axial through hole.
Preferably, the suture line carrier comprises a plurality of deformation pieces, and a yielding groove is respectively arranged between every two deformation pieces.
Preferably, one end of the deformation sheet is arranged on the inner surface of the wall of the axial through hole, and the other end of the deformation sheet faces the central axis of the axial through hole.
Preferably, the suture carrier comprises a radial through hole for fixing an end of the suture.
Preferably, the first matching part is a guide groove, the suture needle comprises a needle tip, a guide groove and a main body part, the needle tip is positioned at the distal end of the main body part, and the guide groove is positioned at the distal end area of the main body part.
Preferably, the guide groove includes a blocking portion, a retention groove and an inlet end surface, the inlet end surface is an inclined surface, the retention groove is located between the blocking portion and the central axis of the main body portion, and an inlet space is formed between the inlet end surface and the blocking portion.
Preferably, the suture line carrier is in a grid shape and comprises a peripheral edge, a plurality of longitudinal edges and a plurality of transverse edges, and the second matching part is any one of the longitudinal edges or the transverse edges.
Preferably, the ends of the suture thread are fixed to any one of the longitudinal ribs or the transverse ribs by means of knotting.
Preferably, the suture carrier is made of an elastic material.
Preferably, the suture assembly comprises two suture needles and two suture carriers, and two ends of the suture are fixedly connected with the two suture carriers respectively.
Preferably, when the two suture needles are in the first position, the distance between the needlepoints of the two suture needles 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.
Preferably, the first position is an initial position and the second position is a suture position.
The embodiment of the invention also discloses a puncture core assembly. The puncture core assembly comprises a puncture assembly and any one suture assembly as described above, the puncture assembly comprises a puncture rod assembly and a puncture end assembly, the puncture rod assembly comprises a suture needle channel used for accommodating the suture needle and serving as a motion track of the suture needle, the suture needle is provided with a first matching part, and the suture carrier is provided with a second matching part; 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.
The embodiment of the invention also provides a puncture outfit, which comprises a puncture cannula assembly and the puncture core assembly, wherein the puncture core assembly can extend into the puncture cannula assembly.
According to the suturing assembly, the puncture core assembly with the suturing assembly and the puncture outfit with the suturing assembly, a puncture hole does not need to be enlarged, and an additional surgical instrument does not need to be added, so that a channel can be established under the puncture effect, and an anastomat or other surgical instruments can enter a patient body; and the suture of the puncture hole can be realized in the narrow puncture hole, so that the hernia of the puncture hole caused by the puncture hole of the minimally invasive surgery can be effectively avoided.
Drawings
FIG. 1 is a schematic structural view of a piercing core assembly according to a first embodiment of the present invention;
FIG. 2 is a sectional view showing an initial state of the puncture core assembly according to the first embodiment of the present invention;
FIG. 3 is a schematic structural view of the puncture rod assembly according to the first embodiment of the present invention;
figures 4a-4b are schematic structural illustrations of a first inner rod assembly in accordance with a first embodiment of the present invention;
figure 5 is a schematic structural view of a second inner rod assembly in accordance with the first embodiment of the present invention;
FIG. 6 is a schematic structural view of a knob according to a first embodiment of the present invention;
fig. 7 is a schematic structural view of a fixing block according to a first embodiment of the present invention;
figure 8 is a schematic structural view of a first inner rod body according to a first embodiment of the present invention;
FIG. 9 is a schematic structural view of a transmission rod according to a first embodiment of the present invention;
FIGS. 10a-10b are schematic views of a suture channel configuration according to a first embodiment of the present invention;
FIG. 11 is a schematic structural view of a piercing end assembly according to a first embodiment of the present invention;
FIG. 12 is a schematic structural view of a suture needle according to a first embodiment of the present invention;
FIG. 13 is a schematic structural view of a suture carrier according to a first embodiment of the present invention;
FIG. 14 is a schematic view of an initial state of the puncture core assembly according to the first embodiment of the present invention;
FIGS. 15a-15d are schematic views of a puncture core assembly suturing process in accordance with a first embodiment of the present invention;
FIG. 16 is a schematic view of the state of the suture thread upon post-suture removal of the puncture core assembly according to the first embodiment of the present invention;
fig. 17 is a schematic structural view of a puncture instrument according to a first embodiment of the present invention;
FIG. 18 is a schematic structural view of a piercing end assembly according to a second embodiment of the present invention;
FIG. 19 is a schematic structural view of a suturing needle in accordance with a second embodiment of the present invention;
FIG. 19a is an enlarged view of the guide groove and the needle tip of the suture needle according to the embodiment of the present invention;
FIG. 20 is a schematic structural view of a suture carrier according to a second embodiment of the present invention;
FIG. 21 is a schematic view of an initial state of the puncture core assembly according to the second embodiment of the present invention;
FIGS. 22a-22d are schematic views of a puncture core assembly suturing process in accordance with a second embodiment of the present invention;
FIG. 23 is a schematic representation of the suture thread state upon post-suture removal of the core piercing assembly according to the second embodiment of the present invention;
fig. 24 is a schematic structural view of a puncture instrument according to a second embodiment of the present invention.
Detailed Description
Reference will now be made in detail to 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 used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. As shown in FIG. 1, the puncture core assembly 100 of the present embodiment includes a puncture tip assembly 1, a puncture rod assembly 2, a knob 31, and a suture key 41. For ease of describing the invention and to simplify the description, in embodiments of the invention the end closer to the clinician is "proximal" or "above" and the end further from the clinician, i.e. closer to the patient's body, is "distal" or "below". Based on the orientation or position relationship shown in fig. 1, the end close to the suture key 41 is regarded as "proximal end" or "upper", and the end close to the puncture end 1 is regarded as "distal end" or "lower"; 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 "inner side", and the direction away from the central axis of the puncture core assembly 100 is regarded as "outer side".
Fig. 1 to 17 are structural drawings of a first embodiment of the present invention.
As shown in fig. 1, the puncture core assembly 100 includes a puncture rod assembly 2, a puncture tip assembly 1 disposed at a distal end of the puncture rod assembly 2, a knob 31 disposed at a proximal end of the puncture rod assembly 2, and a suture key 41. As shown in fig. 2-5, the puncture core assembly 100 further comprises a first inner rod assembly 3 and a second inner rod assembly 4, fig. 2 is a cross-sectional view of the puncture core assembly 100 depicting the composition and assembly relationship of the puncture core assembly 100 according to an embodiment of the present invention. The puncture core assembly 100 comprises a second inner rod assembly 4, a first inner rod assembly 3 and a puncture rod assembly 2 from inside to outside in sequence. At least a portion of the second inner rod assembly 4 is located within the first inner rod assembly 3, and at least a portion of the first inner rod assembly 3 is located within 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 are all coincident. At least a part of the second inner rod assembly 4 is located in the first inner rod assembly 3, which means the position relationship between the two, and 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 view of the puncture rod assembly 2 according to the embodiment of the present invention, and parts of the components are omitted for clarity of the structure and the assembly relationship. The puncture rod assembly 2 comprises a puncture rod body 20 and a suture track 6, wherein the puncture rod body 20 is an elongated hollow cylinder, the interior of the puncture rod body 20 comprises a first channel 23 which penetrates up and down, and the first inner rod body 30 is positioned 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 formed by extending along the radial direction of the puncture rod body, a handle 24 is arranged above the blocking surface 26, the diameter of the handle 24 is larger than that of the puncture rod body 20, the handle 24 is a hollow cylinder, and the diameter of the blocking surface 26 is larger than that of the handle 24. Two limiting bulges 25 are symmetrically arranged on the outer wall of the handle 24. In addition, the distal end of the puncture rod body 20 is provided with a first mounting hole 22 for fixedly connecting with the suture track 6, and the puncture tip assembly 1 is rotatably connected with the suture track 6. The maximum diameter of the proximal end of the piercing tip assembly 1 is approximately equal to the diameter of the piercing shaft body 20, and the distal end thereof is the piercing tip.
Fig. 4a is a schematic structural view of the first inner rod assembly 3 according to the embodiment of the present invention, and fig. 4b is an exploded schematic view thereof. The first inner rod component 3 comprises a first inner rod body 30, a fixing block 32 fixedly connected with the near end of the first inner rod body 30 and a knob 31 rotatably connected with the fixing block 32; the first inner rod component 3 further comprises a first elastic element 33, a transmission rod 5 and a transmission block 9, wherein the first elastic element 33 is sleeved on the outer wall of the first inner rod body 30, the proximal end of the first elastic element is abutted against the distal end of the fixed block 32, and the distal end of the first elastic element is abutted against the upper surface of the blocking surface 26 of the puncture rod body 20; the far end of the first inner rod body 30 is fixedly connected with the near end of the transmission rod 5, and the far end of the transmission rod 5 is fixedly connected with the transmission block 9. The first inside rod body 30 has a second channel 34 formed therein and extending vertically therethrough, and the second inside rod body 40 is located in the second channel 34 and is movable vertically 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 key 41 fixedly connected to the proximal end of the second inner rod body 40, two waist-shaped holes 42 are symmetrically formed in the proximal end of the second inner rod body 40, and a 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 groove 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 restricts the second inner rod body 40 from moving up and down and not rotating circumferentially within the first inner rod body 30. The distal end of the second inner rod body 40 comprises a second through hole 45 which is matched with the suture needle 7, and the two kidney-shaped holes 42 and the two suture needles 7 are positioned in the same plane. The second inside lever body 40 includes a first lever 43 and a second lever 44 in sequence from near to far, and the cross-sectional area of the second lever 44 is smaller than that of the first lever 43. The second rod 44 is a cylinder or a cuboid, and the cross-sectional area of the second rod is smaller than that 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 rectangular parallelepiped, its width and length are both smaller than the diameter of the puncture rod body 20. Preferably, the second shaft 44 is a rectangular parallelepiped, a second elastic element 46 is further disposed outside the second shaft 44, a proximal end of the second elastic element 46 abuts against a distal end of the first shaft 43, and a distal end thereof abuts against a proximal end of the suture passage 6; further, the central axis of the second stem body 40, the central axis of the first stem 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 housing, and a limit groove 311 is formed on a side wall thereof. The limit protrusion 25 of the puncture rod assembly 2 can move in the limit groove 311, and the side wall of the knob 31 is provided with two limit grooves 311 corresponding to the two limit protrusions 25. Each limiting groove 311 comprises a first section 311a, a second section 311b and a third section 311c from bottom to top in sequence, wherein the first section 311a and the third section 311c are linear, the middle second section 311b is curved, the three sections of the limiting groove 311 are connected in sequence smoothly, and the whole limiting groove 311 is approximately in an S shape. The first section 311a of the limiting groove 31 is an initial position, the inner side of the groove is provided with a first positioning key 3111, the second section 311b is a stroke position, the third section 311c is a final position, 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 final position, the first positioning key 3111 or the second positioning key 3112 is respectively used for fixing the limiting protrusion 25 to prevent unexpected movement, and the first positioning key 3111 and the second positioning key 3112 are protrusions with small height. In order to facilitate the rotation of the knob 31, the outer surface thereof is provided with anti-slip threads 312 to increase friction and thus to prevent slipping. The knob 31 further has a ring-shaped hole wall 313, the ring-shaped hole wall 313 surrounds the rotating shaft 321 of the fixing block 32, and the lower surface of the ring-shaped hole wall 313 abuts against 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 a diameter of the groove 323, a diameter of the rotating shaft 321, and a diameter of the first step 322 are sequentially increased; the fixing block 32 further includes a first through hole 325 penetrating up and down. First mounting holes (not shown) are symmetrically formed in the proximal end of the first inner rod body 30, second mounting holes (not shown) are symmetrically formed in the outer wall below the first step 322, and a pin shaft (not shown) penetrates through the waist-shaped hole 42 of the second inner rod body 40 and then is fixedly connected with the first mounting holes (not shown) of the first inner rod body 30 and the second mounting holes (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 fixation block 32 and the second inner rod body 40 is at least partially located in the first inner rod body 30, preferably with the central axis of the fixation block 32 coinciding with the central axis of the second inner rod body 40. Preferably, a stopper is provided on the body structure of the fixing block 32 for preventing the knob 31 from moving upward with respect to the fixing block 32.
The distal end of the puncture rod body 20 is symmetrically provided with two through grooves, the lower ends of the through grooves extend to the lower end of the puncture rod body 20, the through grooves are approximately U-shaped, and form a second accommodating part (not shown), and the second accommodating part forms a part of a track for the movement of the suture needle 7. Fig. 8 is a schematic structural view 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, the second rod 44 of the second inner rod body 40 is located in the rectangular groove, and the distal end of the first inner rod body 30 further includes the blind hole 36. Preferably, blind holes 36 are symmetrically provided on both sides of the second channel 34 for connection with the transmission rod 5. Referring to fig. 9, the proximal end of the transmission rod 5 includes a transmission rod body 52 and mounting ends 51, preferably two mounting ends 51; the two mounting ends 51 are symmetrically arranged at the proximal end of the transmission rod body 52, 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 with the transmission block 9. Preferably, the transmission rod 5 is integrally formed.
Fig. 10a-10b are schematic structural views of the suture track 6. The suture track 6 is fixedly connected with the distal end of the puncture rod body 20 and is used for providing a motion channel of the suture needle 7. The suture track 6 includes a third receiving portion 63 and an accommodating space 64, and the accommodating space 64 is located between the distal end of the suture needle channel 61 and the third receiving portion 63, and is used for accommodating and fixing a target tissue to be sutured. The lancet assembly 1 is rotatably connected within the third receiving portion 63. In one embodiment of the present invention, referring to FIG. 10b, the suture track 6 is internally provided with a suture needle channel 61 and a transmission channel 62; the transmission channel 62 is formed through the sewing track 6 along the central axis of the sewing track 6, and includes a transmission rod channel 621 and a transmission block channel 622 which are communicated with each other, 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, two suture needle channels 61 are symmetrically disposed along the drive channel 621; correspondingly, the sewing track 6 comprises two third housing parts 63 and two housing spaces 64. The needle channel 61 extends in a curve, and further, in an arc; preferably, it extends in the shape of a circular arc. The 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 3, the piercing tip assembly 1 includes a first piercing member 11 and a second piercing member 12, the first piercing member 11 includes a piercing tip 13, and the piercing tip 13 is generally conical, which means that the piercing tip 13 is conical or similar conical, i.e., the generatrix of the piercing tip 13 may be straight, convex or concave. The second piercing element 12 is receivable in the first piercing element 11. The portion of the piercing tip assembly 1 other than the piercing tip 13 is cylindrical with a diameter identical to the diameter D1 of the piercing rod assembly 2. By providing the piercing tip 13 on one piercing element rather than two piercing elements forming the tip together, the strength of the portion of the piercing tip 13 can be increased, facilitating the application of force to the tip and thus facilitating piercing. The proximal ends of the first puncture element 11 and the second puncture element 12 are both provided with a rotating shaft 17, a guide surface 18 of the rotating shaft 17 is an arc surface, and preferably, the guide surface 18 is an arc surface; further, the guide surface 18 is a quarter circular arc surface. The junction of the first piercing member 11 and the guide surface 18 is a first end surface 112, and the junction of the second piercing member 12 and the guide surface 18 is a second end surface 122. As shown in fig. 11, the first end surface 112 and the second end surface 122 are in face-to-face opposition when the first puncture element 11 and the second puncture element 12 are in the open state. As shown in fig. 3, 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 juxtaposed and at the same level. The upper end surface of the piercing tip 13 is a first plane 113, and the lower end surface of the second piercing member 12 is a second plane 123. The second plane 123 is the same shape and size as the first plane 113. As shown in fig. 3, 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 intended to abut and cooperate with the transmission block 9.
The first puncture element 11 is provided with a first receiving portion 116 on a side wall thereof for receiving the suture thread carrier 8 and the first end portion of the suture thread 88 and allowing the needlepoint 71 of the suture needle 7 to enter and exit. The second puncture element 12 is provided with a second receiving portion 126 on a side wall thereof for receiving the suture thread carrier 8 and the second end portion of the suture thread 88 and allowing the needlepoint 71 of the other suture needle 7 to come in and out. The first receiving portion 116 and the second receiving portion 126 have the same shape and structure and function, and for the sake of brevity and clarity, only the connection relationship between the first receiving portion 116 and the suture carrier 8 and the suture 88 will be described. With continued reference to FIG. 15a, piercing tip 13 also includes receiving slot 118 for receiving the body of suture 88. The receiving groove 118 communicates with at least a portion of the first plane 113. A connecting channel 117 is formed between the first receiving portion 116 and the receiving groove 118, and the connecting channel 117 is used for receiving the seam 88.
FIG. 12 is a schematic view showing the structure of the suture needle 7 according to the embodiment of the present invention. The suture needle 7 includes a needle tip 71, a body portion 72, a connecting portion 73, and an end portion 74. The connecting portion 73 may also be referred to as a first mating portion for fixedly connecting the suture needle 7 with the suture thread 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 to the body portion 72. The diameter of the connecting portion 73 at the connection with the needle tip 71 is larger than the diameter of the remaining portion 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 connecting portion 73 is specifically a connecting column. The body portion 72 is curved, and further is arcuate, specifically circular. The body portion 72 has a shape conforming to the needle channel 61 of the suture track 6, and the suture needle 7 is received and moved in the needle channel 61. Preferably, the passage diameter of the needle channel 61 is greater than the diameter of the body portion 72 of the needle 7 and greater than the diameter of the suture carrier 8, thereby reducing the resistance to movement of the needle 71 within the needle channel 61 and allowing the needle 7 to enter the needle channel 61 with the suture carrier 8. The movement locus 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 comprises a second through hole 45 which is matched with the end 74 of the suture needle 7, and the end 74 is rotatably connected with the second inner rod assembly 4.
Fig. 13 is a schematic structural view of a suture carrier 8 according to an embodiment of the present invention. Suture carrier 8 is substantially cylindrical, and the shape of suture carrier 8 conforms to the shape of first receptacle 116 (or second receptacle 126). Suture carrier 8 includes an axial through bore 85, a plurality of crush tabs 81, a plurality of relief slots 82, and a radial through bore 83. The axial through hole 85 is for allowing the suture needle 7 to pass through and for accommodating a suture 88. And an abdicating groove 82 is respectively arranged between every two deformation sheets 81. The deformation plate 81 and the relief groove 82 are located at the first end 851 of the axial through hole 85. The needle 7 enters the axial through bore 85 from the direction of the first end 851. The deformation piece 81 further comprises 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, the other end of the deformation piece 81 is arranged on the inner surface of the wall of the axial through hole 85, the inclined surface 810 enables the suture needle 7 to easily enter the axial through hole 85, and the bottom surface of the deformation piece 81 is a plane and is easy to clamp the connecting part 73 of the suture needle 7. Thus, the deformable piece 81 constitutes a stopper for stopping the suture needle 7. The retaining member 81 may also be referred to as a second mating portion for cooperating with the first mating portion of the needle 7 to fixedly couple the needle 7 to the suture carrier 8. The receding grooves 82 on both sides of the deformation sheet 81 effectively provide the elastic margin and the deformation space required in the deformation process of the deformation sheet 81. The radial through bore 83 is used to secure either a first end or a second end of the suture 88.
FIG. 14 is a schematic view of an initial state (i.e., a closed state) of the lancing assembly according to an embodiment of the present invention. At this point, the first and second piercing elements 11, 12 are in a closed state, with a first end of the first suture 88 fixedly attached to the suture carrier 8 in the first receptacle 116, a second end of the suture 88 fixedly attached to the suture carrier 8 in the second receptacle 126, and the body of the suture 88 disposed within the receiving slot 118 of the piercing tip 13. Referring to FIG. 2, the two needles 7 are positioned in the needle channel 61, respectively, in a state where they are not inserted into the tissue. The first position, i.e., the initial position, of the needle 7 at this time is defined, and the distance between the needlepoints 71 of the two needles 7 is the first distance D1. The first distance D1 is just the diameter of the piercing tip assembly 1 (corresponding to the diameter of the piercing hole).
FIG. 15a shows the first piercing member 11 and the second piercing member 12 of the piercing tip assembly 1 in an open state. From the closed state of the piercing end assembly 1 of FIG. 14 to the open state of the piercing end assembly 1 of FIG. 15a, the operator rotates the knob 31 such that the projection 25 follows the path of the retaining groove 311, and the knob 31 moves from the initial position shown in FIG. 14 at the handle 24 to the end position shown in FIG. 15a at the handle 24. In the process that the protrusion 25 moves along the path of the limiting groove 311, the transmission rod 5 and the transmission block 9 are pushed to move downwards, and the transmission block 9 pushes the first puncture element 11 and the second puncture element 12 to respectively open towards the radial outer ends. After the first piercing member 11 and the second piercing member 12 are deployed, the body of the suture 88 that was originally within the receiving slot 118 falls out of the receiving slot 118. The operator lifts the puncture core assembly 100 as a whole upward until the first puncture element 11 and the second puncture element 12 directly contact the fascia layer of the tissue.
FIG. 15b is a schematic view showing a state where two needles 7 are inserted into the first receiving portion 116 and the second receiving portion 126, respectively, and FIG. 15c is a sectional view of FIG. 15 b. From the open state of the piercing tip assembly 1 of fig. 15a to the state of the suture needle 7 entering the receiving portion of fig. 15b, the operator presses the button 41, and the button 41 pushes the second inner rod assembly 4 downwards and compresses the second resilient member 46 downwards. During the downward movement of the second inner rod assembly 4, the suture needle 7 is driven to extend out along the suture needle channel 61 of the suture track 6 towards the outer end in the radial direction. As shown in connection with FIG. 16, when the suture needle 7 is ejected out of the suture needle channel 61, the suture needle 7 penetrates the tissue fascial layer at the locus of the motion of the suture needle 7. In the process of extending the needle 7 to the radial outer end, the needlepoint 71 of the needle 7 extends into the axial through hole 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 thread carrier 8. Referring to FIG. 15c, the suture needle 7 is in a state of penetrating the tissue, which defines that the suture needle 7 is in a second position, i.e., a suture position at this time, and the distance between the needlepoints 71 of the two suture needles 7 is a second distance D2. Wherein the first distance D1 is less than the second distance D2. The second distance D2 is the distance from the distal end of the needle penetrating the fascia layer of the tissue, and the distance from the distal end is greater than the diameter of the penetrating end assembly (which is equivalent to the diameter of the puncture hole), so that the suture needle is not damaged by the risk of lacerating the tissue to be sutured due to the close proximity of the puncture hole during the tensioning process, and the suture fails.
When the operator releases the button 41, the second inner rod assembly 4 moves upward under the restoring force of the second elastic member 46, and drives the suture needle 7 to move along the suture needle channel 61 of the suture track 6 toward the radial inner end and retract into the suture needle channel 61 again. Since the connecting portion 73 is caught by the stopper portion 810 of the suture thread carrier 8, when the suture needle 7 is retracted, the suture needle 7 takes the suture thread carrier 8 into the suture needle passage 61 together. As shown in connection with FIG. 16, the radial bore 83 of the suture carrier 8 has secured thereto either a first end or a second end of a suture 88, and after the suture carrier 8 is inserted into the suture needle channel 61, a portion of the suture 88 is passed through the fascia layer channel formed by the penetration of the needle 7 into the fascia layer.
Fig. 15d is a schematic view of the puncture core assembly being restored to the original state (i.e., closed state) again. When the operator releases the button 41, and the suturing needle 7 and the suturing thread carrier 8 enter the suturing channel 61, the operator rotates the knob 31 in the reverse direction, and the protrusion 25 pulls the transmission rod 5 and the transmission block 9 to move upwards in the process of moving in the reverse direction along the path of the limiting groove 311, and the transmission block 9 drives the first puncturing element 11 and the second puncturing element 12 to retract towards the inner ends in the radial direction, and then returns to the initial state (i.e., the closed state).
Referring to fig. 16, the operator pulls the puncture core assembly 100 out of the puncture 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 core assembly 100 is removed from the patient's body, the first and second ends of the suture 88 are pulled tight and tied off, and the excess suture 88 is removed, thereby completing the puncture. The occurrence of puncture hernia can be effectively prevented only by suturing the subcutaneous tissue at the puncture hole of the patient; preferably, the knot is tied in the dermis of the patient so that the knot is positioned in the puncture hole and does not leak out of the skin of the patient, so that the knot is prevented from being touched after the operation, and the puncture hole is not opened because the fascia layer at the subcutaneous tissue of the patient is sutured, and the epidermis layer or the dermis layer is easy to heal automatically. Preferably, suture 88 is a human absorbable suture.
The invention also provides a puncture outfit 300 based on the puncture core assembly 100. Referring to FIG. 17, puncture instrument 300 further includes cannula assembly 200, and during puncturing, puncture core assembly 100 is inserted into puncture cannula assembly 200 and guides cannula assembly 200 into the abdominal cavity of a patient for other surgical instruments to enter the patient for performing a surgical operation, and after the cutting and suturing operation is completed, the puncture instrument 300 of the present invention can suture the puncture hole.
Fig. 18 to 24 are drawings showing a second embodiment of the present invention. Since the piercing rod assembly of the piercing mandrel assembly 100 of the second embodiment of the present invention, the knob and the suture key provided at the proximal end of the piercing rod assembly are the same as those described in fig. 1 to 10b of the first embodiment of the present invention, detailed description thereof will be omitted. Only the piercing tip assembly 1 and the entire suturing process of the second embodiment will be described in detail herein.
As shown in fig. 18, the piercing tip assembly 1 comprises a first piercing element 11 and a second piercing element 12, the first piercing element 11 comprises a piercing tip 13, and the piercing tip 13 is substantially conical, which means that the piercing tip 13 is conical or similar conical, i.e. the generatrix of the piercing tip 13 may be straight, convex or concave. The second piercing element 12 is receivable in the first piercing element 11. The portion of the piercing tip assembly 1 other than the piercing tip 13 is cylindrical with a diameter identical to the diameter D1 of the piercing rod assembly 2. By providing the piercing tip 13 on one piercing element rather than two piercing elements forming the tip together, the strength of the portion of the piercing tip 13 can be increased, facilitating the application of force to the tip and thus facilitating piercing. The proximal ends of the first puncture element 11 and the second puncture element 12 are both provided with a rotating shaft 17, a guide surface 18 of the rotating shaft 17 is an arc surface, and preferably, the guide surface 18 is an arc surface; further, the guide surface 18 is a quarter circular arc surface. The junction of the first piercing member 11 and the guide surface 18 is a first end surface 112, and the junction of the second piercing member 12 and the guide surface 18 is a second end surface 122. As shown in fig. 11, the first end surface 112 and the second end surface 122 are in face-to-face opposition when the first puncture element 11 and the second puncture element 12 are in the open state. Referring to fig. 3, 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 juxtaposed and located at the same horizontal plane. The upper end surface of the piercing tip 13 is a first plane 113, and the lower end surface of the second piercing member 12 is a second plane 123. The second plane 123 is the same shape and size as the first plane 113. Referring to fig. 3, 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 intended to abut and cooperate with the transmission block 9.
The first puncture element 11 is provided with a first receiving portion 116 on a side wall thereof for receiving the suture thread carrier 8 and the first end portion of the suture thread 88 and allowing the needlepoint 71 of the suture needle 7 to enter and exit. The second puncture element 12 is provided with a second receiving portion 126 on a side wall thereof for receiving the suture thread carrier 8 and the second end portion of the suture thread 88 and allowing the needlepoint 71 of the other suture needle 7 to come in and out. A fixing unit 116a for fixing the suture thread carrier 8 is provided at an entrance of the first accommodation part 116. The fixing elements 116a may in particular be recesses and projections with the same pitch as the grid of the suture thread carrier 8. When the suture line carrier 8 is not subjected to external force, the grid end part in the suture line carrier 8 is fixed at the inlet of the first accommodating part 116 through the matching of the groove and the protrusion; when the suture thread carrier 8 is subjected to an external force along the direction from the inside toward the outside of the first accommodation portion 116, the suture thread carrier 8 is detached from the entrance of the first accommodation portion 116. The first receiving portion 116 and the second receiving portion 126 have the same shape and structure and function, and for the sake of brevity and clarity, only the connection relationship between the first receiving portion 116 and the suture carrier 8 and the suture 88 will be described. With continued reference to FIG. 15a, piercing tip 13 also includes receiving slot 118 for receiving the body of suture 88. The receiving groove 118 communicates with at least a portion of the first plane 113. A connecting channel 117 is formed between the first receiving portion 116 and the receiving groove 118, and the connecting channel 117 is used for receiving the seam 88.
FIG. 19 is a schematic view showing the structure of the suture needle 7 according to the embodiment of the present invention. The suture needle 7 includes a needle tip 71, a body portion 72, a guide groove 73, and an end portion 74. The needle tip 71 is located at one end of the body 72, and the body 72 is provided with a guide groove 73. The body portion 72 is curved, and further is arcuate, specifically circular. The body portion 72 has a shape corresponding to the needle channel 61 of the suture track 6, and the suture needle 7 is received and moved in the needle channel 61. The passage diameter of the needle channel 61 is larger than the diameter of the body portion 72 of the needle 7, thereby reducing the resistance to the movement of the needle 71 in the needle channel 61. The passage diameter of the needle passage 61 is also larger than the size of the contracted suture carrier 8. The needle tip 71 moves along the same path as the body 72. The distal end of the second inner rod body 40 of the second inner rod assembly 4 comprises a second through hole 45 which is matched with the end 74 of the suture needle 7, and the end 74 is rotatably connected with the second inner rod assembly 4.
With continued reference to fig. 19a, 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 main body portion 72 from the outer peripheral surface of the main body portion 72 toward the needlepoint 71 and toward the central axis of the main body portion 72, and further cutting a holding groove 735 in the main body portion 72 along the central axis direction thereof, wherein a blocking portion 733 is held between the holding 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 retaining groove 735 is used to retain the connecting portion of the suture carrier 8. Entry face 731 is beveled to facilitate entry of the attached portion of suture carrier 8 into retention slot 735. The guide groove 73 may also be referred to as a first mating portion.
Fig. 20 is a schematic structural view of the suture carrier 8 according to an embodiment of the present invention. Suture thread carrier 8 is in the form of a grid and has a substantially rectangular overall shape, and suture thread carrier 8 has a shape conforming to the shape of first receiving portion 116 (or second receiving portion 126). Suture carrier 8 includes a peripheral edge 81, a plurality of longitudinal edges 83, and a plurality of transverse edges 82. The longitudinal edges 83 and the transverse edges 82 intersect each other. Each longitudinal edge 83 interconnects with the peripheral edge 81 and each transverse edge 82 interconnects with the peripheral edge 81. The plurality of longitudinal ribs 83 are parallel to each other and the plurality of transverse ribs 82 are parallel to each other. Each of the longitudinal ribs 83, the transverse ribs 81, and the peripheral ribs 81 form a plurality of grid spaces 85 (i.e., a grid) therebetween. The length and width of the grid space 85 are slightly smaller than the diameter of the main body portion 72 of the needle 7. The suture carrier 8 is made of an elastic material. When suture carrier 8 is secured to first receptacle 116 or second receptacle 126, suture carrier 8 is in a slightly taut state. The ends of the suture 88 may be fixed to either of the longitudinal ribs 83 or the transverse ribs 82, and the specific fixing manner may be a knotting manner. Each transverse edge 82 and longitudinal edge 83 may be collectively referred to as a connecting portion of suture carrier 8. The connecting portion may also be referred to as a second matching portion. As will be appreciated by those skilled in the art, the shape of suture carrier 8 and first receiving portion 116 (or second receiving portion 126) may be other shapes, such as circular, square, or other polygonal shapes.
FIG. 21 is a schematic view of an initial state (i.e., closed state) of the lancing assembly according to an embodiment of the present invention. At this point, the first and second piercing elements 11, 12 are in a closed state, with a first end of the first suture 88 fixedly attached to the suture carrier 8 in the first receptacle 116, a second end of the suture 88 fixedly attached to the suture carrier 8 in the second receptacle 126, and the body of the suture 88 disposed within the receiving slot 118 of the piercing tip 13. Referring to FIG. 2, two needles 7 are disposed in the needle channel 61, respectively, in a non-tissue-piercing state. Defines that the needle 7 is in the first position, i.e., the initial position, and the distance between the needle tips 71 of the two needles 7 is just the diameter of the piercing tip assembly 1, i.e., the first distance D1.
Fig. 22a shows the first piercing member 11 and the second piercing member 12 of the piercing tip assembly 1 in an open state. From the closed state of the piercing tip assembly 1 of fig. 21 to the open state of the piercing tip assembly 1 of fig. 22a, the operator rotates the knob 31 such that the protrusion 25 moves along the path of the retaining groove 311, and the knob 31 moves from the initial position at the handle 24 shown in fig. 21 to the distal position at the handle 24 shown in fig. 22 a. In the process that the protrusion 25 moves along the path of the limiting groove 311, the transmission rod 5 and the transmission block 9 are pushed to move downwards, and the transmission block 9 pushes the first puncture element 11 and the second puncture element 12 to respectively open towards the radial outer ends. After the first piercing member 11 and the second piercing member 12 are deployed, the body of the suture 88 that was originally within the receiving slot 118 falls out of the receiving slot 118. The operator lifts the puncture core assembly 100 as a whole upward until the first puncture element 11 and the second puncture element 12 directly contact the fascia layer of the tissue.
FIG. 22b is a schematic view showing a state where two suture needles 7 are respectively inserted into the first receiving portion 116 and the second receiving portion 126, and FIG. 22c is a sectional view of FIG. 22 b. From the open state of the piercing tip assembly 1 of fig. 22a to the state of the suture needle 7 entering the receiving portion of fig. 22b, the operator presses the button 41, the button 41 pushes the second inner rod assembly 4 downwards and compresses the second resilient element 46 downwards. During the downward movement of the second inner rod assembly 4, the suture needle 7 is driven to extend out along the suture needle channel 61 of the suture track 6 towards the outer end in the radial direction. As shown in connection with FIG. 23, as the needle 7 is extended out of the needle channel 61, the needle 7 penetrates the tissue fascial layer at the locus of the needle 7. During the process of the suture needle 7 being ejected towards the radial outer end, the needlepoint 71 of the suture needle 7 respectively extends into the grid space 85 of the suture thread carrier 8 positioned in the first receiving portion 116 and the second receiving portion 126, so that one transverse rib 82 or one longitudinal rib 83 of the suture thread carrier 8 enters the guide groove 73 of the suture needle 7. Referring to FIG. 22c, the suture needle 7 is in a state of penetrating the tissue, which defines that the suture needle 7 is in a second position, i.e., a suture position at this time, and the distance between the needlepoints 71 of the two suture needles 7 is a second distance D2. Wherein the first distance D1 is less than the second distance D2. The second distance D2 is the distance from the distal end of the needle penetrating the fascia layer of the tissue, and the distance from the distal end is greater than the diameter of the penetrating end assembly (which is equivalent to the diameter of the puncture hole), so that the suture needle is not damaged by the risk of lacerating the tissue to be sutured due to the close proximity of the puncture hole during the tensioning process, and the suture fails.
When the operator releases the button 41, the second inner rod assembly 4 moves upward under the restoring force of the second elastic member 46, and drives the suture needle 7 to move along the suture needle channel 61 of the suture track 6 toward the radial inner end and retract into the suture needle channel 61 again. Since one of the transverse ridges 82 or the longitudinal ridge 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 carries the suture carrier 8 together into the suture needle channel 61. The suture carrier 8 is made of an elastic material, and when the suture carrier 8 is pulled by the suture needle 7 to be separated from the first receiving portion 116 or the second receiving portion 126, the volume of the suture carrier 8 is smaller enough to enter the suture needle passage 61. As shown in connection with FIG. 16, the suture carrier 8 has a first or second end of suture 88 secured to a longitudinal or transverse edge thereof, and after the suture carrier 8 is inserted into the needle channel 61, a portion of the suture 88 is passed through the fascia layer channel formed by the penetration of the fascia layer by the needle 7.
Fig. 22d is a schematic view of the puncture core assembly being restored to the original state (i.e., closed state) again. When the operator releases the button 41, and the suturing needle 7 and the suturing thread carrier 8 enter the suturing channel 61, the operator rotates the knob 31 in the reverse direction, and the protrusion 25 pulls the transmission rod 5 and the transmission block 9 to move upwards in the process of moving in the reverse direction along the path of the limiting groove 311, and the transmission block 9 drives the first puncturing element 11 and the second puncturing element 12 to retract towards the inner ends in the radial direction, and then returns to the initial state (i.e., the closed state).
Referring to fig. 23, the operator pulls the puncture core assembly 100 out of the puncture 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 core assembly 100 is removed from the patient's body, the first and second ends of the suture 88 are pulled tight and tied off, and the excess suture 88 is removed, thereby completing the puncture. The occurrence of puncture hernia can be effectively prevented only by suturing the subcutaneous tissue at the puncture hole of the patient; preferably, the knot is tied in the dermis of the patient so that the knot is positioned in the puncture hole and does not leak out of the skin of the patient, so that the knot is prevented from being touched after the operation, and the puncture hole is not opened because the fascia layer at the subcutaneous tissue of the patient is sutured, and the epidermis layer or the dermis layer is easy to heal automatically. Preferably, suture 88 is a human absorbable suture.
The invention also provides a puncture outfit 300 based on the puncture core assembly 100. Referring to FIG. 24, puncture instrument 300 further includes cannula assembly 200, and during puncturing, puncture core assembly 100 is inserted into puncture cannula assembly 200 and guides cannula assembly 200 into the abdominal cavity of a patient for other surgical instruments to enter the patient for performing a surgical operation, and after the cutting and suturing operation is completed, puncture instrument 300 of the present invention can suture the puncture hole.
In conclusion, according to the puncture core assembly and the puncture outfit with the same, the puncture hole does not need to be enlarged, and additional surgical instruments do not need to be added, so that the puncture function can be realized to establish a channel for an anastomat or other surgical instruments to enter a patient body; the suture of the puncture hole can be realized in the narrow puncture hole, and the hernia of the puncture hole caused by the puncture hole of the minimally invasive surgery can be effectively avoided. In addition, the suture assembly, the puncture core assembly with the suture assembly and the puncture outfit with the suture assembly have different positions of the suture needle in the tissues which are not penetrated and the tissues which are penetrated, and the distance D1 between the needle points when the tissues are not penetrated is smaller than the distance D2 between the needle points when the tissues are penetrated, thereby avoiding the problem of over short distance of the suture in the prior art.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
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.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018116532548 | 2018-12-29 | ||
| CN201811653254 | 2018-12-29 |
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| CN111374722A true CN111374722A (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910182582.2A Pending CN111374722A (en) | 2018-12-29 | 2019-03-11 | Suture assembly, puncture core assembly with suture assembly and puncture device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023104045A1 (en) * | 2021-12-09 | 2023-06-15 | 江苏风和医疗器材股份有限公司 | Suture device and puncture device for use in surgical operation |
| WO2024023201A1 (en) * | 2022-07-28 | 2024-02-01 | Cilag Gmbh International | Tissue closure device and method of using same |
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