Positioning mechanism for puncture core assembly, puncture core assembly and puncture outfit capable of being sutured

Abstract

The invention provides a positioning mechanism for a puncture core assembly, the puncture core assembly and a suturable puncture outfit, the positioning mechanism comprises a positioning operation assembly and a positioning assembly, and the positioning operation assembly is configured to drive the positioning assembly to rotate with the first axial direction of the puncture core assembly as the central axis; the positioning assembly comprises a positioning blade, and the positioning blade is rotatably arranged; the positioning blade has an open state and a closed state, and in response to the switching of the positioning blade from the closed state to the open state, at least part of the positioning blade protrudes outwards to abut against tissues on the two sides of the puncture opening, so that the puncture outfit with the puncture core assembly becomes the puncture outfit which is complete in function and occupies a small layout space and can be sutured.

Description

Technical Field

[0001] The present invention relates to surgical instruments, and more particularly to a positioning mechanism for a puncture core assembly, a puncture core assembly, and a suturing trocar. Background Art

[0002] In minimally invasive surgical operations such as abdominal surgery and thoracic surgery, a trocar can establish an access channel in the body wall of a human body for a stapler or other surgical instruments (such as an endoscope, etc.) to enter the body cavity, and provide a channel for gas to enter and exit, so as to perform inspections or surgical operations.

[0003] The trocar includes a puncture core assembly and a cannula assembly. During the operation, a doctor generally makes a small incision on the patient's body tissue first, and then while aligning the puncture tip of the puncture core assembly with the small incision and reciprocatingly rotating it left and right, moves the trocar downward, so that the puncture core assembly guides the cannula assembly to pass through the cortex of the patient's body tissue; then the puncture core assembly is pulled out, and the stapler or other surgical instruments can enter and exit the patient's body cavity through the cannula assembly for operation. The existing puncture core assembly only functions as puncturing. After guiding the cannula assembly to enter the patient's body from the incision in the abdomen of the human body, it is discarded.

[0004] At the end of the operation, the cannula assembly is removed from the puncture opening, and the puncture opening is sutured. Because the puncture opening of the minimally invasive surgery is small and deep, especially for obese patients with thicker body tissues, if sutured improperly, the patient is prone to complications such as incisional hernia after the operation. A special suturing instrument can be used to suture the puncture opening to reduce the above complications, but this requires additional surgical instruments, the suturing cost is relatively high, and there are many surgical instruments and the operation is inconvenient; moreover, the structure of the stapler for specifically suturing the puncture opening is complex and inconvenient to use. Therefore, a trocar with a suturing function can be used.

[0005] In order to achieve accurate suturing, the trocar with a suturing function should first position the body tissues on both sides of the puncture opening before suturing. Therefore, a device capable of achieving positioning needs to be equipped in the trocar. However, the existing suturing trocars have inaccurate positioning, the positioning device is inconvenient to operate, and in the limited accommodation space of the trocar, how to arrange the device for driving the positioning action and the device for performing the positioning action has become a technical problem that needs to be solved by those skilled in the art.

[0006] After performing the positioning action, a needle - exiting action is performed to suture the puncture opening. In actual operation, there are two ways to suture the puncture opening. The first suture method is as follows: after the suture needle drives the suture thread to enter the puncture opening from the outside of the puncture opening, it then penetrates into the puncture opening from the side and exits through the human tissue on both sides of the puncture opening. Using this suture method, it is not necessary to send the suture thread into the body in advance. However, when the suture needle penetrates into the puncture opening from the side, it will exert a thrust on the side of the puncture opening, which will cause the puncture opening to expand, resulting in an unsatisfactory suture effect and the inability to suture the fascia layer. The second suture method is to suture the puncture opening from the inside out or from the outside in, and the suture trajectory is a straight line. This suture method cannot achieve accurate positioning or clamping of tissues and is prone to suture failure. The following suture method is relatively ideal: the suture needle drives the suture thread to penetrate from the lowest layer (i.e., the fascia layer) of the tissues on both sides of the puncture opening and exit from the side of the puncture opening, so that the fascia layer can be sutured relatively well. However, the implementation of this suture method requires corresponding suture driving devices and suture execution devices, and the suture thread needs to be sent into the body before suture. How the suture driving device and the suture execution device are structured to achieve the corresponding functions has become a technical problem to be solved. Placing the suture thread in the puncture core assembly and making the suture thread follow the puncture core assembly into the puncture opening is a feasible way. However, how to place the suture thread in the puncture core assembly, how to release the suture thread and cooperate with the suture needle - exiting have become technical problems to be solved when using the above - mentioned suture method. In addition, within the limited accommodation space of the puncture device, how to layout the suture driving device, the suture execution device, the driving device and the execution device for the function of releasing the suture thread has also become a technical problem that those skilled in the art need to further solve.

[0007] In some existing suture - capable puncture devices, the suture assembly for suture includes a suture arm and a suture needle located at the end of the suture arm. The suture needle is tied with a suture thread. After suture, it is necessary to separate the suture needle from the suture arm to leave the suture thread carried by the suture needle. However, a relatively large external force is required to separate the suture needle and the suture arm. The needle receiving assembly for leaving the suture needle in the prior art has a poor fixing effect on the suture needle and cannot effectively separate the suture needle from the suture arm. Therefore, how to improve the fixing effect on the suture needle to reduce the probability of failure in separating the suture arm and the suture needle has become a technical problem that those skilled in the art need to solve.

[0008] Existing suture - capable puncture devices do not have a device to prevent misoperation. In addition, arranging a device with the function of preventing doctors from misoperating will occupy the accommodation space of the puncture device, and the accommodation space of the puncture device is very limited. Summary of the Invention

[0009] To solve the above problems, the present invention provides a positioning mechanism for a puncture core assembly, a puncture core assembly, and a suture - capable puncture device.

[0010] To achieve the above object, according to one aspect of the present invention, a positioning mechanism for a puncture core assembly is provided. The positioning mechanism includes a positioning operation component and a positioning component. The positioning operation component is configured to drive the positioning component to rotate about the first axial direction of the puncture core assembly as the central axis; the positioning component includes positioning blades, and the positioning blades are rotatably arranged; the positioning blades have an open state and a closed state. In response to the positioning blades being switched from the closed state to the open state, at least a part of the positioning blades protrudes outward to abut against the tissues on both sides of the puncture opening.

[0011] Further, the positioning operation component includes a toggling member. In response to a force being applied to the toggling member along the circumferential direction of the puncture core assembly, the positioning operation component rotates about the second axial direction of the puncture core assembly as the central axis, thereby driving the positioning component to rotate; the first axial direction and the second axial direction are parallel to each other.

[0012] Further, the second axial direction is the central axis of the puncture core assembly.

[0013] Further, the positioning mechanism further includes a positioning transmission component. The proximal end of the positioning transmission component is fixedly connected to the toggling member, and the distal end of the positioning transmission component is drivingly connected to the proximal end of the positioning component.

[0014] Further, the distal end of the positioning transmission component includes a protruding portion, and the proximal end of the positioning component includes a receiving groove; the protruding portion is movably received in the receiving groove so that the distal end of the positioning transmission component is drivingly connected to the proximal end.

[0015] Further, the receiving groove is a kidney-shaped groove.

[0016] Further, when the positioning blades are in the open state, the suture channel of the puncture core assembly is exposed.

[0017] Further, the distal end of the positioning transmission component is a rotating ring, and the protruding portion protrudes outward from the upper surface or the lower surface of the rotating ring.

[0018] Further, the positioning component further includes an assisting arm and a pivot shaft. The assisting arm extends laterally from the proximal end of the pivot shaft. The assisting arm includes a receiving groove, and the positioning blades are located at the distal end of the pivot shaft.

[0019] Further, the puncture core assembly further includes a suture mechanism and a suture release mechanism.

[0020] Further, when the positioning blades are in the open state, the suture channel of the puncture core assembly is exposed.

[0021] Further, the positioning component rotates about the first axial direction as the central axis to realize the conversion between the closed state and the open state.

[0022] Further, when the positioning component is in the closed state, the positioning blade is flush with the outer surface of the puncture core component; when the positioning component is in the open state, the positioning blade protrudes from the outer surface of the puncture core component.

[0023] Further, the positioning blade has an upper surface which is perpendicular to the central axis of the puncture core component; when the positioning component is in the open state, a surface contact is formed between the upper surface of the positioning blade and the tissue.

[0024] According to another aspect of the present invention, there is provided a puncture core component, comprising a suturing mechanism and a positioning mechanism, the positioning mechanism being the above-mentioned positioning mechanism, the suturing mechanism comprising two suturing members, each suturing member comprising a suturing arm and a suturing needle, and the end of the suturing thread being fixed to the suturing needle; the two suturing members are adapted to be driven to rotate to effect needle suturing.

[0025] According to another aspect of the present invention, there is provided a sutureable puncture device, comprising a puncture core component and a cannula component, the cannula component comprising a cannula, and the puncture core component being removably sleeved in the cannula; the puncture core component is the above-mentioned puncture core component. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which form a part of this application, are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0027] Figure 1 is a schematic structural view of the puncture device provided by the present invention;

[0028] Figure 2 is a schematic structural view of the puncture core component provided by the present invention;

[0029] Figure 3 is Figure 2 an exploded view of

[0030] Figure 4 is a schematic structural view of the components required for positioning when positioning is not performed;

[0031] Figure 5 is a schematic connection view of the swivel and the positioning member;

[0032] Figure 6 is a schematic structural view of the components required for positioning after positioning is performed;

[0033] Figure 7 is a schematic structural view of the component driven by the gland;

[0034] Figure 8 is a schematic view of an angle of the gland;

[0035] Figure 9Yes Figure 8 Another perspective structural schematic diagram;

[0036] Figure 10 It is a structural schematic diagram of the adjustment frame and the adjustment block;

[0037] Figure 11 It is a schematic diagram of the suture assembly when the needle is not ejected;

[0038] Figure 12 It is a structural schematic diagram of the receiving part;

[0039] Figure 13 It is a schematic diagram of the puncture core assembly when the needle receiving action, the needle fixing action, and the suture releasing action are completed;

[0040] Figure 14 It is the puncture core assembly at Figure 12 The cross-sectional view in the state of;

[0041] Figure 15 It is a structural schematic diagram of the components required to implement the needle receiving action and the needle fixing action;

[0042] Figure 16 It is a structural schematic diagram when the driving pressure plate is in the second position;

[0043] Figure 17 It is a structural schematic diagram of the needle fixing assembly when the needle fixing is completed;

[0044] Figure 18 It is a structural schematic diagram of the puncture core assembly after the suture assembly is reset.

[0045] Among them, the above-mentioned drawings include the following reference numerals:

[0046] 1. Operating assembly;

[0047] 11. Turntable; 111. Lower housing; 112. Dial arm; 113. Stop piece; 113a. First guiding inclined surface;

[0048] 12. Pressure cover; 121. Pressing plate; 122. Notch; 122a. Slit; 1221. Rib plate group; 123. Circumferential wall; 124. Pushing foot; 1241. Pushing foot plate;

[0049] 2. Abutting plate; 21. Central through hole;

[0050] 3. Rod wall tube; 31. Window; 32. Deformation piece;

[0051] 4. Transmission assembly;

[0052] 41. First transmission assembly; 411. First transmission tube; 412. Transmission arm; 413. Rotating ring;

[0053] 42, second transmission assembly; 421, adjustment frame; 4212, guide groove; 422, adjustment block; 422a, second guide slope; 4221, guide convex block; 4222, anti-sway convex strip; 423, elastic member; 424, transmission rod; 424a, proximal end; 424b, distal end; 425, rack; 425a, upper tooth segment; 425b, lower tooth segment;

[0054] 43. third transmission assembly; 431. upper transmission ring; 432. connecting rod; 433. third transmission tube; 434. lower transmission ring; 435. booster arm;

[0055] 5, support assembly; 5', upper part; 5", lower part; 51, first support member; 511, clearance space; 52, second support member; 53, suture channel; 54, clearance groove; 541, 542, groove wall; 55, accommodation hole;

[0056] 6. Execution components;

[0057] 61, positioning assembly; 611, auxiliary arm; 6111, waist-shaped groove; 612, pivot shaft; 613, positioning blade; 614, protruding portion;

[0058] 62, suturing assembly; 621, 622, suturing pieces; 623, gear; 624, rotating shaft; 625, first suturing arm; 626, second suturing arm; 627, suturing needle;

[0059] 63, receiving assembly; 631, 632, receiving member; 6311, receiving portion; 6312, holding portion; 6313, receiving sheet; 6314, blocking arm;

[0060] 64, needle fixing assembly; 641, 642, movable parts; 641a, limiting slit;

[0061] 7, puncture tip; 71, first wall shell; 72, second wall shell; 711; 721, toothed member; 7111, first limit convex block; 712, first support shaft; 722, second support shaft; 73, protrusion;

[0062] 8. Insert block assembly; 81. Button; 82. Hook; 83. Spring;

[0063] 9. Cover body; 91. Circumferential hole; 92. Circumferential through hole. DETAILED DESCRIPTION

[0064] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0065] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0066] In the present invention, unless otherwise specified, the directional words used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0067] Please refer to Figure 1 The present invention provides a puncture device, which includes a sleeve assembly (not numbered) and a puncture core assembly partially sleeved in the sleeve assembly. Figure 2 and Figure 3 The puncture core assembly includes an operating assembly 1, an abutment disk 2, a rod wall tube 3, a transmission assembly 4, a support assembly 5, an execution assembly 6, a puncture tip 7, an insert assembly 8 and a cover body 9. The cover body 9 covers the upper surface of the abutment disk 2 to prevent foreign matter from falling into the abutment disk 2 and affecting the realization of the function of the puncture core assembly. A cylinder 91 is arranged in the center of the cover body 9, and the cylinder 91 is sleeved on the outside of the operating assembly 1. The part of the operating assembly 1 exposed to the cylinder 91 can be manipulated by the doctor. Inside the cylinder 91, the operating assembly 1 is connected to the transmission assembly 4. A central through hole 21 coaxial with the cylinder 91 is provided in the center of the abutment disk 2, and the transmission assembly 4 is penetrated in the central through hole 21. Below the transmission assembly 4 is the support assembly 5, which is used to support and protect the execution assembly 6. The support assembly 5 includes two support members with the same structure, namely a first support member 51 and a second support member 52. A rod wall tube 3 is sleeved on the outside of the transmission assembly 4. The proximal end of the rod wall tube 3 is connected to the lower surface of the abutment disk 2 and the rod wall tube 3 is coaxial with the central through hole 21. The distal end of the rod wall tube 3 surrounds the upper half 5' of the support assembly 5 and is fixedly connected to the upper half 5'. The lower half 5" of the support assembly 5 is exposed between the rod wall tube 3 and the puncture tip 7, and the outer surface of the lower half 5" is flush with the outer surface of the rod wall tube 3, so that the puncture core assembly can enter and exit the puncture port unimpeded. The outer surface of the rod wall tube 3 is the outer surface of the puncture core assembly. The end surface of the distal end of the rod wall tube 3 extends downward to form two symmetrical deformation sheets 32, and a yield groove 54 is provided at the junction of the upper half 5' and the lower half 5", as shown in FIG. Figure 4 and Figure 6As shown, the groove wall 541 of the relief groove 54 is located between the end face of the distal end of the deformation piece 32 and the end face of the distal end of the rod wall tube 3. After the upper half part 5' is sleeved with the rod wall tube 3, the relief groove 54 has a space for the deformation piece 32 to be bent. A deformation tool is used to bend the deformation piece 32 inward to form a hook (not shown), and the hook is abutted against the groove wall 541. In this way, the groove wall 541 prevents the axial movement of the hook, thereby preventing the axial movement of the rod wall tube 3. Moreover, at least one first pin hole (not shown) is provided on the rod wall tube 3, and at least one second pin hole (not shown) is provided on the upper half part of the support assembly 5. After the rod wall tube 3 is sleeved on the outside of the upper half part of the support assembly 5, the first pin hole and the second pin hole are coaxially arranged. A fixing pin (not shown) is used to sequentially insert into the coaxial first pin hole and the second pin hole, so that the rod wall tube 3 is fixed to the upper half part of the support assembly 5, and further the rod wall tube 3 is connected to the support assembly 5. A sleeve assembly is sleeved on the outside of the rod wall tube 3, and the proximal end of the sleeve assembly is detachably connected to the lower surface of the abutting disc 2. The insert block assembly 8 is used to achieve the detachable connection. The insert block assembly 8 includes two symmetric insert block members (not labeled). Each insert block member includes a button 81, a hook 82 and a spring 83. The button 81 is movably connected above the abutting disc 2. The hook 82 is fixedly connected to the button 81 and extends from the button 81 to the lower part of the abutting disc 2. The spring 83 is located in the cover body 9, one end of which abuts against the button 81, and the other end abuts against the vertical part of the abutting disc 2. The hook 82 can be engaged with the sleeve assembly. The button 81 and the spring 83 are used to move the hook 82 so that the hook 82 is disengaged from the sleeve assembly, and further the proximal end of the abutting disc 2 is separated from the sleeve assembly. The insert block assembly 8 is a prior art and will not be elaborated. In the present invention, based on the Figure 2 As shown in the positional relationship, the end where the puncture tip 7 in the puncture core assembly is located is referred to as the distal end or the lower end, and the end where the operation assembly 1 in the puncture core assembly is located is referred to as the proximal end or the upper end. The side close to the central axis of the rod wall tube 3 is referred to as the inner side, and the side far from the central axis of the rod wall tube 3 is referred to as the outer side. The radial direction of the rod wall tube 3 is referred to as the radial direction, the direction of the central axis of the rod wall tube 3 is referred to as the axial direction, and the direction perpendicular to the axial direction is referred to as the transverse direction. The transverse direction includes the radial direction. The direction perpendicular to the central axis of the rod wall tube 3 and parallel to the circumference of the rod wall tube 3 is defined as the circumferential direction, and the plane parallel to the circumferential direction is defined as the circumferential plane. The central axis of the rod wall tube 3 is the central axis of the puncture core assembly. The above-mentioned various directions of the rod wall tube 3 are the corresponding various directions of the puncture core assembly, and the above-mentioned various planes of the rod wall tube 3 are the corresponding various planes of the puncture core assembly. The outer surface of the puncture core assembly refers to the outer surface of the rod wall tube 3.

[0068] During the operation, the doctor first makes a small incision in the patient's abdomen, uses the puncture tip 7 of the puncture core assembly provided by the present invention to puncture the human tissue to form a puncture opening, inserts the lower part of the cannula assembly into the human body, separates the puncture core assembly from the cannula by pressing the insertion block assembly 8, and pulls out the puncture core assembly from the cannula. Then, the surgical instrument is inserted into the cannula for the operation. After the operation is completed, the surgical instrument is taken out, the puncture core assembly is reinserted into the cannula, and the puncture core assembly and the cannula assembly are re-locked through the insertion block assembly 8, and the suture operation is started. According to the operation sequence, the suture operation process using the puncture core assembly provided by the present invention includes the following actions or steps: positioning, forming a suture channel, needle exiting and suturing, releasing the suture thread, receiving the needle tip, fixing the needle tip, and resetting. Further, after the puncture core assembly is reset, the doctor can pull out the puncture core assembly and tie the suture thread. Among them, the operations of needle exiting and suturing and releasing the suture thread start to be executed synchronously, and the operation of releasing the suture thread is completed prior to the operation of needle exiting and suturing.

[0069] Please refer to Figure 3, the doctor manipulates the operation component 1 to generate a driving force, which is transmitted by the transmission component 4 to the execution component 6 and the puncture tip 7, so that the execution component 6 and the puncture tip 7 perform the suturing operation. The operation component 1 includes a gland 12 and a turntable 11 from top to bottom. The transmission component 4 includes a second transmission component 42, a first transmission component 41, and a third transmission component 43 sleeved from inside to outside. The execution component 6 includes a positioning component 61, a suturing component 62, a receiving component 63, and a needle fixing component 64. Specifically, by manipulating the turntable 11 to rotate, the rotation of the turntable 11 drives the first transmission component 41 to rotate, and the first transmission component 41 drives the positioning component 61 to rotate. The positioning component 61 rotates to perform the positioning action and form a suture channel, so that the positioning action and the formation of the suture channel are carried out synchronously; by manipulating the gland 12 to move, the movement of the gland 12 drives the second transmission component 42 and the third transmission component 43 to move. The movement of the second transmission component 42 synchronously drives the suturing component 62 to act and drives the puncture tip 7 to open. The suturing component 62 acts to perform the needle-out suturing action, and the puncture tip 7 opens to perform the suture thread release action, so that the needle-out action and the suture thread release action are carried out synchronously; the needle receiving component 63 does not need to be driven, and the needle receiving component 63 performs the needle receiving action; the third transmission component 43 moves to drive the needle fixing component 64 to move, and the needle fixing component 64 moves to perform the needle fixing action; reset refers to the reset of the positioning component 61, the suturing component 62, and the puncture tip 7. The positioning operation component includes the turntable 11, and the suturing operation component, the suture thread release operation component, or the suture needle fixing operation component all includes the gland 12. The positioning component includes a positioning execution component. The suturing component includes a suturing execution component, and the suturing execution component includes a suture needle. The puncture tip can be called a suture thread release execution component. The first transmission component can also be called a positioning transmission component, the second transmission component can also be called a suturing transmission component and a suture thread release transmission component, and the third transmission component can also be called a suture needle fixing transmission component.

[0070] Reference Figure 4 , 6 , the turntable 11 is an integrally formed part, which includes a housing 111 and a dial arm 112. The housing 111 covers above the abutment disk 2 and is used to protect the transmission component 4 above the central through hole 21. The cover 9 covers the housing 111. The outer end of the dial arm 112 is located outside the cover 9. The dial arm 112 sequentially passes through the circumferential through hole 92 of the cover 9 and the housing 111, and the inner end of the dial arm 112 is located inside the housing 111. Please refer to Figure 3 , the circumferential through hole 92 has a space for the circumferential movement of the dial arm 112. Please continue to refer to Figure 4, the outer end of the dialing arm 112 is the operating end, and the inner end is clamped to the first transmission tube 411 of the first transmission assembly 41. The first transmission assembly 41 is sleeved in the rod wall tube 3. The first transmission assembly 41 successively includes the first transmission tube 411, two symmetric transmission arms 412, and a rotating ring 413 from top to bottom. The first transmission tube 411 is a hollow tube extending along the axis. The proximal end of the first transmission tube 411 is located above the central through hole 21 and is clamped to the inner end of the dialing arm 112. The distal end of the first transmission tube 411 is fixedly connected to the proximal end of the transmission arm 412. The two symmetric transmission arms 412 both extend along the axis. The proximal end of the transmission arm 412 is fixed to the outside of the first transmission tube 411, and the distal end of the transmission arm 412 is integrally formed with the rotating ring 413. The rotating ring 413 is located between the first support member 51 and the second support member 52, and the rotating ring 413 is drivingly connected to the positioning assembly 61.

[0071] The positioning assembly 61 includes two symmetrically arranged positioning members (not labeled) with the same structure. One of the positioning members is pivotally connected to the first support member 51, and the other positioning member is pivotally connected to the second support member 52. The upper end of each positioning member has a protrusion 614 extending axially upward, and the lower end has a protrusion 614 extending axially downward. Both the first support member 51 and the second support member 52 have accommodation holes 55 formed by extending axially upward and axially downward. The protrusion 614 is accommodated in the corresponding accommodation hole 55 and can rotate in the accommodation hole 55, thereby realizing the pivotal connection of one positioning member to the first support member 51 and the pivotal connection of the other positioning member to the second support member 52. For the sake of concise description, only the positioning member pivotally connected to the first support member 51 will be introduced below. The positioning member includes an assisting arm 611, a pivot shaft 612, and a positioning blade 613. The pivot shaft 612 extends along the axis. The assisting arm 611 is perpendicular to the pivot shaft 612 and the assisting arm 611 is drivingly connected to the rotating ring 413, thereby realizing the rotation of the rotating ring 413 to drive the assisting arm 611 to rotate about the line connecting the two protrusions 614 above and below (i.e., the axis where the pivot shaft 612 is located), and further realizing the rotation of the rotating ring 413 to drive the positioning member to rotate about the pivot shaft 612. The so-called "drivingly connected" means that the rotation of the rotating ring 413 can drive the assisting arm 611 to rotate. Specifically, the rotating ring 413 is provided with a protrusion (also called an assisting body) protruding upward (not shown), such as Figure 5As shown, the assisting arm 611 has an elongated slot 6111, and the assisting body is accommodated in the elongated slot 6111 and can move within the elongated slot 6111. When the swivel ring 413 rotates circumferentially, the assisting body also rotates circumferentially. The circumferential rotation of the assisting body causes it to move within the elongated slot 6111 and drives the elongated slot 6111 to rotate about the pivot axis 612. The assisting arm 611 where the elongated slot 6111 is located also rotates about the pivot axis 612, thereby causing the positioning blade 613 to rotate outward and inward about the pivot axis 612. The first support member 51 includes a relief space 511. The assisting arm 611 is located within the relief space 511, and one end of the assisting arm 611 is integrally formed with the proximal end of the pivot axis 612. The pivot axis 612 extends axially, and the positioning blade 613 is integrally formed at the distal end of the pivot axis 612. When the positioning blade 613 does not rotate (i.e., in the closed state), the positioning blade 613 is flush with the outer surfaces of the rod wall tube 3 and the first support member 51; when the positioning blade 613 rotates (i.e., in the open state), the positioning blade 613 protrudes from the outer surfaces of the rod wall tube 3 and the first support member 51. Therefore, after the two positioning blades 613 rotate, they protrude from the outer surface of the rod wall tube 3 and abut against the tissues on both sides of the puncture opening, thereby realizing the positioning function. At this time, the suture assembly 62 is in a sutureable position. Since the upper surface of the positioning blade 613 forms a surface contact with the tissue and the upper surface is perpendicular to the axis of the puncture core assembly, the positioning is relatively accurate. Since the positioning blade 613 rotates about an axial center axis of the puncture core assembly, the contact area between the positioning blade 613 and the tissue is not affected by the position of the positioning blade 613 after rotation. The upper surface of the positioning blade 613 forms a surface contact rather than a point contact with the tissue, so the positioning is relatively accurate.

[0072] When the rotating disk 11 is not rotating but in the initial position, the lever arm 112 is located at one end of the circumferential through hole 92 . The doctor moves the push arm 112 along the first circumferential direction, and the push arm 112 rotates along the first circumferential direction in the circumferential through hole 92. The push arm 112 drives the first transmission assembly 41 to rotate along the first circumferential direction, the first transmission tube 411 rotates along the first circumferential direction, the first transmission tube 411 drives the transmission arm 412 to move along the first circumferential direction, the transmission arm 412 drives the swivel 413 to rotate along the first circumferential direction, the swivel 413 drives the two symmetrical auxiliary arms 611 of the positioning assembly 61 to rotate, the two symmetrical auxiliary arms 611 respectively drive the two pivot shafts 612 to rotate, and the two pivot shafts 612 respectively drive the two positioning blades 613 to pivot outward, so that the two positioning blades 613 change from a state flush with the outer surface of the rod wall tube 3 to a state protruding from the outer surface of the rod wall tube 3, that is, from a closed state to an open state, the two positioning blades 613 protrude from the outer surface of the rod wall tube 3, and can abut against the tissues on both sides of the puncture port, thereby realizing the positioning function. When the lever arm 112 rotates to the other end of the circumferential through hole 92, the hole wall of the circumferential through hole 92 blocks the lever arm 112 from continuing to rotate along the first circumferential direction, so that the positioning blade 613 stops rotating, and the turntable 11 is at the end position. When the positioning assembly 61 performs the reset action, the lever arm 112 is moved along the second circumferential direction, and the first circumferential direction and the second circumferential direction are opposite. According to the above-mentioned action transmission relationship, the first transmission assembly 41 rotates along the second circumferential direction and drives the two pivot shafts 612 to rotate in the opposite direction. The two pivot shafts 612 respectively drive the two positioning blades 613 to pivot inward, so that the two positioning blades 613 are restored from the state of protruding from the outer surface of the rod wall tube 3 to the state of being flush with the outer surface of the rod wall tube 3, that is, from the open state to the closed state, and the positioning assembly 61 is reset.

[0073] There is a space between the first support member 51 and the second support member 52, and the space is defined as an accommodating space A, and the accommodating space A is used to accommodate the suturing assembly 62. When the positioning blade does not rotate, the positioning blade closes the part of the accommodating space A where the suturing assembly 62 is located; when the positioning blade rotates, the part of the accommodating space A where the suturing assembly 62 is located is exposed, exposing the suturing channel 53. The suturing assembly 62 can move through the suturing channel 53 to the outside of the rod wall tube 3, thereby performing the needle removal action.

[0074] Please refer to Figures 7 - 9, the gland 12 includes a pressing plate 121, a circumferential wall 123, and two symmetric pushing feet 124. The pressing plate 121 is exposed outside the cover body 9. The proximal ends of the circumferential wall 123 and the two pushing feet 124 are integrally formed on the lower surface of the pressing plate 121 and extend axially. The circumferential wall has two symmetric notches 122, and both notches 122 are formed after removing a part of the circumferential wall 123. The notch 122 includes two axially extending slits 122a. On both sides inside each slit 122a, two rib plates protrude radially inward. The above two rib plates are called a group of rib plates, and each group of rib plates is defined as a rib plate group 1221. The two rib plate groups 1221 and the two pushing feet 124 are arranged staggeredly. The axial length of each pushing foot 124 is greater than the axial length of the circumferential wall 123, and the distal end of the pushing foot 124 protrudes radially inward to form a pushing foot plate 1241. When the gland 12 is not pressed and is in the first position, each rib plate group 1221 abuts against the adjusting block 422 of the second transmission assembly 42. Press the gland 12, and the rib plate group 1221 presses down the adjusting block 422, so that the second transmission assembly 42 where the adjusting block 422 is located moves downward. As Figures 11 - 13 shown, the second transmission assembly 42 moves downward to drive the suture assembly 62 to perform a needle-out action and the puncture tip 7 to perform a suture release action. After the needle-out suture action is completed, as Figure 14 shown, the gland 12 moves to the second position. Continue to press the gland 12. After the gland 12 moves a dead travel, the two pushing foot plates 1241 abut against the upper transmission ring 431 of the third transmission assembly 43. Continue to press the gland 12 to make the pushing foot plate 1241 press down the upper transmission ring 431, so that the third transmission assembly 43 where the upper transmission ring 431 is located moves downward. As Figures 15 - 17 shown, the third transmission assembly 43 moves downward to drive the needle fixing assembly 64 to perform a needle fixing action. After the needle fixing action is completed, the gland 12 moves to the third position. The suture assembly, the puncture tip, and the needle fixing assembly share the gland 12 for operation, reducing the number of operating components and improving the convenience of operation.

[0075] Please refer to Figure 7 , the second transmission assembly 42 includes an adjusting portion (not labeled), a transmission rod 424, and a rack 425. Refer to Figure 10, the adjusting part includes an elastic member 423, an adjusting frame 421, and two symmetrical adjusting blocks 422. The elastic member 423 is a spring, and the elastic member 423 is located between the two adjusting blocks 422. Each adjusting block 422 is arranged such that a part of it can move radially between the inside and outside of the adjusting frame 421. The middle part of the adjusting frame 421 is received between the two pushing feet 124. When the gland 12 is in the first position and the second position, and during the process of moving from the first position to the second position, due to the elastic force of the elastic member 423, a certain distance is maintained between the two adjusting blocks 422, and the adjusting blocks 422 partially protrude from the adjusting frame 421. The adjusting part is in the first state, and each rib plate group 1221 abuts against the adjusting block 422 on the same side. When the gland 12 moves downward from the second position to the third position, the elastic member 423 contracts, and the adjusting blocks 422 are received inside the adjusting frame 421, and the adjusting part is in the second state. The cylindrical part of the adjusting frame 421 extending downward is fixedly connected to the proximal end 424a of the transmission rod 424. The proximal end 424a of the transmission rod 424 is located above the two push foot plates 1241, and the radial distance between the two push foot plates 1241 is smaller than the width of the proximal end 424a. Thus, when the gland 12 is lifted, the push foot plates 1241 abut against the proximal end 424a of the transmission rod 424, thereby pulling the second transmission assembly 42 where the proximal end 424a is located to move upward. The upward movement of the second transmission assembly 42 drives the suture assembly 62 and the puncture tip 7 to perform a reset action. The transmission rod 424 extends axially downward and forms a distal end 424b after passing through the first transmission assembly 41. The distal end 424b is connected to the rack 425. Teeth are provided on both sides of the rack 425. The teeth on both sides are divided into two sections from top to bottom, namely an upper tooth section 425a and a lower tooth section 425b. Teeth are symmetrically provided on both sides of the upper tooth section 425a. The upper tooth section 425a transmits a driving force to the suture assembly 62 to drive the suture assembly 62 to perform a needle-out suturing action. Teeth are provided on at least one side of the lower tooth section 425b. The lower tooth section 425b transmits a driving force to the puncture tip 7 to drive the puncture tip 7 to perform a suture thread releasing action.

[0076] Please refer to Figure 11, the suture assembly 62 includes suture members 621 and 622 with the same structure. For the sake of brevity in description, only the suture member 621 will be introduced below. The suture member 621 includes a gear 623, a rotating shaft 624, a first suture arm 625, a second suture arm 626, and a suture needle 627. The teeth on one side of the upper tooth segment 425a are engaged with the gear 623. The gear 623 is sleeved and fixed on the rotating shaft 624. One end of the rotating shaft 624 is rotatably connected to the first support member 51, and the other end is rotatably connected to the second support member 52. The rotating shaft 624 is fixed to one end of the first suture arm 625. The first suture arm 625 is an arm with a relief bend for making way for the rotating shaft of the suture member 622, so that the rotating shaft of the suture member 622 and the rotating shaft 624 of the suture member 621 are located in the same transverse plane. The other end of the first suture arm 625 is fixed to one end of the second suture arm 626. The second suture arm 626 is a bent arm, and the other end of the second suture arm 626 is detachably connected to the suture needle 627; one end of the suture thread is tethered to the suture needle 627, and the other end of the suture thread is tethered to the suture needle of the suture member 622. When the rack 425 moves axially downward, the teeth on one side of the upper tooth segment 425a drive the gear 623 to rotate. The rotation of the gear 623 drives the rotating shaft 624 to rotate self - clockwise in the first direction. The rotating shaft 624 drives the first suture arm 625, the second suture arm 626, and the suture needle 627 to rotate in the first direction. When the suture needle 627 rotates in the first direction, it drives one end of the suture thread to rotate out of the puncture core assembly and through the human tissue on one side of the puncture opening. The teeth on the other side of the upper rack 425a drive the suture member 622 to rotate in the second direction in the same way, so that the other end of the suture thread also rotates out of the puncture core assembly and through the human tissue on the other side of the puncture opening. The first direction is opposite to the second direction.

[0077] Please refer to Figure 12, after the suture needle drives the end of the suture thread through the human tissue around the puncture port, it is received by the receiving assembly 63. The receiving assembly 63 is arranged in the upper half 5' of the support assembly 5. The receiving assembly 63 includes two receiving members 631 and 632 with the same structure. For the sake of concise description, only the receiving member 631 will be introduced below. The receiving member 631 includes a receiving portion 6311, clamping portions 6312 located on both sides of the receiving portion 6311, and a receiving piece 6313 located at the center of the receiving portion 6311. The receiving portion 6311 and the clamping portions 6312 are integrally formed. The clamping portions 6312 have a bent shape. The support assembly 5 is provided with a receiving space matching the shape of the clamping portions 6312. The first support member 51 fixes one side of the clamping portion 6312, and the second support member 52 fixes the other side of the clamping portion 6312, so that the receiving portion 6311 is located above the accommodation space A, and thus the receiving portion 6311 is located in the rotation path of the suture member 621. Through the two receiving members 631 and 632 with the same structure, the first support member 51 is connected to the second support member 52. The receiving piece 6313 is arranged on the receiving portion 6311. The receiving piece 6313 is an elastic mesh piece or an elastic hollowed-out piece with a hollowed-out structure. The mesh of the elastic mesh piece or the hollowed-out structure of the elastic hollowed-out piece is used to clamp the suture needle 627. A window 31 is opened in the rod wall tube 3. The receiving piece 6313 is located within the window 31. After the suture needle 627 passes through the human tissue on one side of the puncture port, it passes through the window 31 and is clamped by the receiving piece 6313. The suture needle of the suture member 622 is synchronously clamped by the receiving piece of the receiving member 632 in the same way, so as to realize the reception of the suture needle, as Figure 13 shown.

[0078] In the present invention, the puncture opening is regarded as a hole. The upper part of the hole is outside the body, the lower part of the hole is inside the body, and the tissue around the hole is the body cavity wall tissue of the human body. The side of the puncture opening refers to the side wall of the hole, and the human tissues on both sides of the puncture opening refer to the body cavity wall tissue of the human body around the hole. The present invention selects to suture the puncture opening from the inside out, that is, the suture needle drives the suture to penetrate from the lowermost layer (i.e., the fascia layer) of the tissues on both sides of the puncture opening and exit from the side of the puncture opening, so that the fascia layer can be better sutured. Since in the puncture core assembly provided by the present invention, the two end portions of the suture are respectively tied to the suture needles of the suturing members 621 and 622, when using the above suturing method, there will be a problem of how to send the part of the suture other than the two end portions into the body cavity before the suture exits the needle. For the sake of concise description, the part of the suture other than the two end portions is defined as the release part. To solve the above problem, the present invention makes the release part follow the lower half of the puncture core assembly through the puncture opening into the body cavity. Specifically: the release part of the suture is accommodated in the puncture tip 7, so that the release part follows the puncture tip 7 through the puncture opening into the body cavity. After the release part follows the puncture tip 7 into the puncture opening, when performing the suturing operation, it is necessary to release the suture so that the suture has enough length. In the present invention, the action of releasing the suture is performed by the puncture tip 7.

[0079] Please refer to Figure 13 and 14, the puncture tip 7 is conical. The puncture tip 7 has a tip inner cavity therein, and the release portion of the suture is accommodated in the tip inner cavity. When the puncture tip 7 is opened, the release portion of the suture unfolds to form a curved segment below the puncture tip 7 due to gravity and its own elasticity, realizing the function of releasing the suture. To enable the puncture tip 7 to be opened, the puncture tip 7 includes a first wall shell 71 and a second wall shell 72 that can be separated from each other. The tip inner cavity is formed after the first wall shell 71 and the second wall shell 72 are closed. The first wall shell 71 and the second wall shell 72 can be snap-fitted to each other to make their closure stable. Specifically, a groove (not shown) is provided on the side surface of one of the first wall shell 71 and the second wall shell 72, and a protrusion 73 is provided on the side surface of the other. The protrusion 73 is clamped in the groove to make the first wall shell 71 and the second wall shell 72 snap-fitted. The snap-fitting can prevent the first wall shell 71 and the second wall shell 72 from separating during puncture. The second transmission component 42 moving axially can release the snap-fitting between the first wall shell 71 and the second wall shell 72 and separate the first wall shell 71 and the second wall shell 72. The first wall shell 71 and the second wall shell 72 pivot respectively to achieve their separation from each other. The pivoting means that the first wall shell 71 and / or the second wall shell 72 pivots relative to the support assembly 5. To achieve the pivoting of the first wall shell 71 relative to the support assembly 5, a toothed member 711 is provided on the first wall shell 71. The toothed member 711 is sleeved on the first support shaft 712 through the first support hole. One end of the first support shaft 712 is fixed to the first support member 51, and the other end is fixed to the second support member 52, so that the first support shaft 712 is fixed to the support assembly 5, and the first wall shell 71 can pivot around the first support shaft 712; a toothed member 721 is provided on the second wall shell 72, and the toothed member 722 is sleeved on the second support shaft 722 through the second support hole. One end of the second support shaft 722 is fixed to the first support member 51, and the other end is fixed to the second support member 52, so that the second support shaft 722 is fixed to the support assembly 5, and the second wall shell 72 can pivot around the second support shaft 722. To drive the first wall shell 71 to pivot around the first support shaft 711 and the second wall shell 72 to pivot around the second support shaft 722, the toothed members 711 and 721 are provided with a plurality of teeth, and the plurality of teeth are selectively engaged with the teeth of the lower tooth segment 425b of the rack 425. Thus, the relative pivoting between the first wall shell 71 and the second wall shell 72 and the rotation of the suturing members 621 and 622 can be synchronously driven by the rack 425. The relative pivoting includes both the first wall shell 71 and the second wall shell 72 pivoting, and one of the first wall shell 71 and the second wall shell 72 pivoting while the other remains stationary. When only one of the first wall shell 71 and the second wall shell 72 needs to pivot, teeth can be provided on one side of the lower tooth segment 425b of the rack 425 and not on the other side. For the sake of simplicity in description, only the case where both the first wall shell 71 and the second wall shell 72 pivot is introduced below: When the puncture tip 7 is in the initial state (i.e., not opened), the lower tooth segment 425b of the rack 425 is engaged with the toothed members 711 and 721.When the rack 425 moves downward, the teeth on one side of the upper tooth section 425a drive the gear 623 to rotate in the first direction. The rotation of the gear 623 in the first direction drives the rotary shaft 624, the first suture arm 625, the second suture arm 626, and the suture needle 627 to rotate in the first direction. The teeth on one side of the lower tooth section 425b drive the toothed member 711 to rotate in the first direction, and the toothed member 711 drives the first wall shell 71 to pivot in the first direction. At the same time, the teeth on the other side of the upper tooth section 425a drive the suture member 622 to rotate in the second direction, and the teeth on the other side of the lower tooth section 425b drive the toothed member 721 to rotate in the second direction. The toothed member 721 drives the second wall shell 72 to pivot in the second direction, so that both the first wall shell 71 and the second wall shell 72 pivot, the puncture tip 7 is opened, and the suture thread is released. At this time, the puncture tip 7 is in the termination state. Since the present invention stitches the puncture opening from the inside to the outside, the movement trajectory of the suture needle of each suture member is: rotating from inside the puncture core assembly to outside the puncture core assembly and passing through the human tissue on one side of the puncture opening. This section of the movement trajectory requires each suture member to rotate 180 degrees. Therefore, the rack 425 needs to move downward by a sufficient length so that the suture members 621 and 622 can rotate 180 degrees.However, considering the maximum pivoting angle of the first wall shell 71 and the second wall shell 72 and the length of the downward movement of the rack 425, after the first wall shell 71 and / or the second wall shell 72 are pivoted to the maximum angle, the rack 425 still needs to move downward, and then the toothed member 711 and the toothed member 721 no longer engage with the lower tooth segment 425b. At this time, it is necessary to keep the puncture tip 7 in the terminated state to wait to be driven by the lower tooth segment 425b to reset. To achieve the above purpose, a side surface of the toothed member 711 protrudes transversely to form a first limiting protrusion 7111, and the inner surface of the first support member 51 or the second support member 52 has a first limiting groove (not shown) for the first limiting protrusion 7111 to slide. The size of a part of the first limiting groove is reduced so as to be in interference fit with the first limiting protrusion 7111. The said part of the first limiting groove corresponds to the position where the first limiting protrusion 7111 is located in the first limiting groove when the first wall shell 71 is pivoted to the maximum angle. When the first wall shell 71 pivots along the first direction, the first limiting protrusion 7111 rotates along the first direction following the toothed member 711. During the rotation process, the first limiting protrusion 7111 enters the first limiting groove and slides in the first limiting groove. After the first wall shell 71 is pivoted to the maximum angle, the first limiting protrusion 7111 is clamped in the first limiting groove, so that the toothed member 711 where the first limiting protrusion 7111 is located maintains its position. The toothed member 711 maintaining its position makes the first wall shell 71 maintain the open state; and / or, an end surface of the toothed member 721 protrudes transversely outward to form a second limiting protrusion (not labeled), and the inner surface of the first support member 51 or the second support member 52 has a second limiting groove (not shown) for the second limiting protrusion to slide. The size of a part of the second limiting groove is reduced so as to be in interference fit with the second limiting protrusion. The said part of the second limiting groove corresponds to the position where the second limiting protrusion is located in the second limiting groove when the second wall shell 72 is pivoted to the maximum angle. When the second wall shell 72 pivots along the second direction, the second limiting protrusion rotates along the second direction following the toothed member 711. During the rotation process, the second limiting protrusion enters the second limiting groove and slides in the second limiting groove. After the second wall shell 72 is pivoted to the maximum angle, the second limiting protrusion is clamped in the second limiting groove, so that the toothed member 721 where the second limiting protrusion is located maintains its position. The toothed member 721 maintaining its position makes the second wall shell 72 maintain the open state. The first wall shell 71 and / or the second wall shell 72 maintaining the open state makes the puncture tip 7 maintain the terminated state. After the suture members 621 and 622 are rotated 180 degrees and the suture needle is received by the receiving assembly 63 and fixed by the needle fixing assembly 64, the suture assembly 62 and the first wall shell 71 and / or the second wall shell 72 can perform the reset action.Lift the pressing cover 12 upward so that the push foot plate 1241 abuts against the proximal end 424a of the transmission rod 424. The push foot plate 1241 lifts the transmission rod 424, causing the second transmission assembly 42 where the transmission rod 424 is located to move upward. As a result, the rack 425 moves upward. The teeth on one side of the upper tooth section 425a of the rack 425 drive the gear 623 to rotate in the second direction. The rotation of the gear 623 in the second direction drives the rotating shaft 624, the first stitching arm 625, the second stitching arm 626, and the stitching needle 627 to rotate in the second direction. After the rack 425 moves upward a certain distance, the teeth on one side of the lower tooth section 425b encounter the toothed part 711 and mesh with the toothed part 711, thereby driving the toothed part 711 to rotate in the second direction. The toothed part 711 drives the first wall shell 71 to pivot in the second direction. At the same time, the teeth on the other side of the upper tooth section 425a drive the stitching member 622 to rotate in the first direction, and the teeth on the other side of the lower tooth section 425b drive the toothed part 721 to rotate in the first direction. The toothed part 721 drives the second wall shell 72 to pivot in the first direction, causing the first wall shell 71 and the second wall shell 72 to pivot towards each other until the first wall shell 71 and the second wall shell 72 close to form the puncture tip 7. At this time, the puncture tip 7 returns to its initial state, thus realizing the reset action of the stitching assembly 62 and the first wall shell 71 and the second wall shell 72 synchronously. It should be noted that the first wall shell 71 and the second wall shell 72 are two asymmetrical structures. In this embodiment, the first wall shell 71 is smaller than the second wall shell 72, so that the puncture force is concentrated on the second wall shell 72, avoiding the unexpected separation of the first wall shell 71 and the second wall shell 72 under the reaction force of the human tissue on the puncture force concentration point during puncture. The stitching assembly 62 and the puncture tip 7 share a rack drive, realizing their synchronous movement, meeting the action logic relationship between them, and saving the layout space of the puncture device.

[0080] Please refer to Figures 14 - 15, the third transmission assembly 43 includes, from top to bottom, an upper transmission ring 431, two symmetric connecting rods 432, a third transmission tube 433, a lower transmission ring 434, and two symmetric boosting arms 435. The upper transmission ring 431, the third transmission tube 433, and the lower transmission ring 434 are coaxial and have the same outer diameter. The upper transmission ring 431 is fixed to the proximal ends of the connecting rods 432. The pick-up arm 112 passes between the two connecting rods 432 and is clamped to the first transmission tube 411. The distal ends of the connecting rods 432 are fixed to the proximal end of the third transmission tube 433. The third transmission tube 433 extends axially between the rod wall tube 3 and the first transmission tube 411. The distal end of the third transmission tube 433 is fixed to the lower transmission ring 434. The lower transmission ring 434 is fixed to the proximal ends of the boosting arms 435. The boosting arms 435 are located between the first support member 51 and the second support member 52. Thus, the rotation of the boosting arms 435 in the third transmission assembly 43 is blocked by the first support member 51 and the second support member 52, so that the rotation of the third transmission assembly 43 is blocked. Further, the outer surface of the first limiting portion 56 and / or the second limiting portion 57 has bumps (not shown), and the inner wall of the lower transmission ring 434 has depressions (not shown). The bumps are received in the depressions, so as to prevent the lower transmission ring 434 from moving axially downward due to gravity, and further prevent the third transmission assembly 43 where the lower transmission ring 434 is located from moving when not pressed by the gland 12.

[0081] When the gland 12 is pressed and moves downward from the second position to the third position, the push foot plate 1241 of the gland 12 abuts against the upper transmission ring 431 and pushes the third transmission assembly 43 to move downward, causing the lower transmission ring 434 to move against the resistance of the bumps. The downward movement of the lower transmission ring 434 causes the boosting arms 435 to move axially downward between the first support member 51 and the second support member 52, thereby driving the needle fixing assembly 64 to perform the needle fixing action. The end surface where the receiving hole 55 is located is the upper end surfaces of the first support member 51 and the second support member 52.

[0082] It should be noted that since the gland 12 needs to move downward by a sufficient displacement to rotate each suture member by 180 degrees, that is, after the suture needle is received by the receiving assembly 63, the needle fixing action can be performed. The above-mentioned sufficient displacement is defined as h. When the gland 12 is in the first position, the axial distance between the upper transmission ring 434 of the third transmission assembly 43 and the push foot plate 1241 is greater than h. When the gland 12 is pressed and moves downward from the first position, each suture member rotates and the third transmission assembly 43 remains fixed until the gland 12 moves downward by the displacement h. At this time, each suture member has rotated 180 degrees. At this time, the second transmission assembly 42 is fixed and no longer drives the suture assembly 62 to act. The push foot plate 1241 needs to move downward by a dead stroke before it can abut against the upper transmission ring 434, thereby driving the needle fixing assembly 64 to perform the needle fixing action.

[0083] Please refer to Figure 13And Figure 15 , the needle fixing assembly 64 is disposed above the needle receiving assembly 63. The needle fixing assembly 64 includes two symmetrical movable members 641 and 642. The movable member 641 is located above the axis of the receiving member 631, and the movable member 642 is located above the axis of the receiving member 632. For the sake of simplicity of description, only the movable member 641 will be introduced below. The proximal end of the movable member 641 is fixed to the outside of the boosting arm 435. The distal end of the movable member 641 is an open end, which is realized by opening a limiting slit 641a. The limiting slit 641a is used to further hold the suture needle 627 that has been held by the receiving piece 6313. When the gland 12 is in the second position, pressing the gland 12 causes the gland 12 to move downward, driving the third transmission assembly 43 to move downward. The third transmission assembly 43 drives the movable member 641 to move downward. The downward movement of the movable member 641 causes the suture needle 627 to enter the limiting slit 641a substantially vertically until the suture needle 627 has been caught in the proximal end of the limiting slit 641a. The suture needle 627 prevents the proximal end of the limiting slit 641a from continuing to move downward, so that neither the movable member 641 nor the third transmission assembly 43 can continue to move downward, and further the gland 12 cannot continue to move downward. At this time, the gland 12 is in the third position, as shown in Figure 17As shown. At this time, the distal end of the movable member 641 is radially located between the receiving member 631 and the blocking arm 6314, and the blocking arm 6314 extends outward from the clamping portion 6312 to the outside of the receiving portion 6311. When the gland 12 is in the third position, lift the gland 12, and the push foot plate 1241 moves upward to abut against the proximal end 424a of the transmission rod 424. The distance that the push foot plate 1241 moves upward to abut against the proximal end 424a of the transmission rod 424 is equal to the distance that the gland 12 moves from the third position to the second position. The push foot plate 1241 pulls the transmission rod 424 and then pulls the second transmission assembly 42 to move upward as a whole. The second transmission assembly 42 drives the suture assembly 62 to perform reset. When the suture assembly 62 performs reset, the rack 425 moves axially. The teeth on one side of the upper tooth section 425a drive the gear 623 to rotate. The rotation of the gear 623 drives the rotating shaft 624 to rotate self - clockwise along the second direction. The rotating shaft 624 drives the first suture arm 625 and the second suture arm 626 to rotate along the second direction. When the second suture arm 626 rotates, it attempts to drive the suture needle 627 to move, but the movement of the suture needle 627 is blocked by the receiving piece 6313 and the movable member 641. During this process, the suture needle 627 gives a reaction force to the receiving piece 6313 and the movable member 641. This reaction force causes the movable member 641 to tilt, but the tilt is blocked by the inner surface of the blocking arm 6314, so that the movable member 641 maintains the clamping of the suture needle 627. Therefore, the suture needle 627 is clamped and separated from the second suture arm 626. After separation, the first suture arm 625 and the second suture arm 626 rotate back from outside the puncture core assembly into the accommodation space A. The suture needle 627 continues to be clamped in the receiving member 631, thus realizing the fixation of the suture needle 627. Since one end of the suture thread is tethered to the suture needle 627, this end of the suture thread is also fixed in the receiving member 631 and the movable member 641. After the puncture core assembly is lifted out of the body, this end of the suture thread is also brought out of the body. By using the same method as above, the suture needle of the suture member 622 is fixed by the movable member 642, so that the other end of the suture thread is also fixed in the receiving member 632 and the movable member 641, and can also be brought out of the body by the puncture core assembly. The movable member 641 can maintain the fixation of the suture needle. The movable member 641 can cooperate with the blocking arm 6314.

[0084] In the present invention, the suture assembly 62 performing the needle - out action, the puncture tip 7 performing the suture - line release action, and the needle fixing assembly 64 performing the needle - fixing action can be prevented from being mis - executed, and the prevention of mis - execution is achieved by preventing mis - driving. Among them, preventing the needle - out action and the suture - line release action from being mis - driven is achieved by the turntable 11 preventing the gland 12 from being mis - pressed when in the first position, and preventing the needle - fixing action from being mis - driven is achieved by the turntable 11 preventing the gland 12 from being mis - pressed when in the second position.

[0085] The turntable 11 preventing the gland 12 from being mis - pressed when in the first position means: Please continue to refer toFigure 4 and Figure 6 The turntable 11 also includes two symmetrical blocking wings (not labeled), each of which includes a blocking wing body and a blocking sheet 113. The outer surface of the upper portion of the housing 111 protrudes radially outward to form a strip-shaped blocking wing body (not labeled), and the top of the blocking wing body protrudes axially upward beyond the upper end surface of the housing 111 to form the blocking sheet 113. Figure 4 As shown, when the rotating disk 11 is in the initial position, the blocking sheet 113 abuts against the circumferential wall 123 of the pressing cover 12, so that the blocking sheet 113 prevents the pressing cover 12 from being pressed by mistake when in the first position, thereby preventing the needle removal action and the suture release action from being driven by mistake. Figure 6 As shown, when the turntable 11 rotates from the initial position to the terminal position, the turntable 11 rotates along the first circumferential direction until the blocking sheet 113 is staggered with the circumferential wall 123 and aligned with the notch 122, and the blocking sheet 113 no longer blocks the downward movement of the pressure cover 12, thereby allowing the pressure cover 12 to move downward from the first position to the second position, thereby driving the suturing assembly 62 to perform the needle removal action and driving the puncture tip 7 to perform the suture release action.

[0086] The turntable 11 prevents the cover 12 from being pressed by mistake when it is in the second position: Please continue to refer to Figure 14 and Figure 16 The tops of the two blocking sheets 113 are both provided with a first guiding slope 113a, and the adjusting block 422 has a second guiding slope 422a extending between the bottom surface and the side surface, and the first guiding slope 113a matches the second guiding slope 422a. Figure 14As shown, when the gland 12 is in the second position, the first guiding inclined surface 113a abuts against the second guiding inclined surface 422a. The first guiding inclined surface 113a prevents the adjusting block 422 from moving downward, and the adjusting block 422 in turn prevents the rib plate group 1221 from moving downward. The rib plate group 1221 being prevented from moving downward causes the gland 12 to be prevented from being accidentally pressed when in the second position, thereby avoiding the accidental actuation of the fixed needle operation. Increasing the pressing force on the gland 12 causes the pressure of the rib plate group 1221 on the adjusting block 422 to increase. The increase in the pressure of the rib plate group 1221 on the adjusting block 422 causes the pressure of the second guiding inclined surface 422a on the first guiding inclined surface 113a to increase. The increase in the pressure of the second guiding inclined surface 422a on the first guiding inclined surface 113a causes the reaction force of the first guiding inclined surface 113a on the second guiding inclined surface 422a to increase. This reaction force is decomposed by the second guiding inclined surface 422a to form a radial force and an axial force. The radial force acts radially inward, causing the two adjusting blocks 422 to approach each other, and thus causing the elastic member 423 to contract. The two adjusting blocks 422 approaching each other causes the adjusting block 422 to move from being partially exposed outside the adjusting frame 421 to being completely received within the adjusting frame 421. The first guiding inclined surface 113a and the second guiding inclined surface 422a no longer abut against each other, and the adjusting portion changes from the first state to the second state. In the second state, the radial length of the adjusting portion decreases, and the adjusting block 422 no longer obstructs the downward movement of the rib plate group 1221. The preset inclination angles of the first guiding inclined surface 113a and the second guiding inclined surface 422a enable the adjusting block 422 to move against the pressure exerted on it by the rib plate group 1221. Continuing to press the gland 12, since the radial length of the adjusting frame 421 is less than the radial distance between the two blocking pieces 113, the adjusting frame 421 is received between the two blocking pieces 113. At this time, the two adjusting blocks 422 are respectively abutted against the inner surface of one of the two blocking pieces 113 under the elastic force of the elastic member 423, so that the adjusting frame 421 is fixed between the two blocking pieces 113. Since the adjusting block no longer obstructs the downward movement of the rib plate group 1221, when the gland 12 continues to move downward, the blocking piece 113 enters the slit 122a and moves relative to the slit 122a. During this process, the gland 12 does not contact the adjusting portion, so that the second transmission assembly 42 where the adjusting portion is located is not driven by a driving force and remains fixed. At the same time, after the push foot plate 1241 of the gland 12 moves downward by a dead stroke, it touches the upper transmission ring 431, and then pushes the upper transmission ring 431, and further causes the entire third transmission assembly 43 to move downward. The downward movement of the third transmission assembly 43 drives the needle fixing assembly 64 to perform the needle fixing operation. After the needle fixing operation is completed, the gland 12 is in the third position, as Figure 15 shown.

[0087] Preferably, in order to prevent the adjusting block 422 from being completely ejected from the adjusting frame 421 by the elastic member 423 during rest or movement, and to avoid the problem of severe shaking caused by the mutual friction between the adjusting block 422 and the adjusting frame 421 during the movement of the adjusting block 422, as Figure 10 and Figure 16 shown, a guiding convex block 4221 protrudes outward from the side surface of the adjusting block 422, and a guiding groove 4212 for the radial movement of the guiding convex block 4221 is provided on the adjusting frame 421. When the adjusting block 422 is at rest, the guiding convex block 4221 is located in the guiding groove 4212, and the guiding groove 4212 can limit the adjusting block 422 to prevent the adjusting block 422 from being completely ejected from the adjusting frame 421; when the adjusting block 422 moves, the guiding convex block 4221 moves in the guiding groove 4212, and the guiding groove 4212 can reduce the shaking amplitude of the adjusting block 422 during movement. In order to further enhance the stability of the movement of the adjusting block 422, anti-shaking convex strips 4222 are provided on the surface of the adjusting block 422, and the anti-shaking convex strips 4222 reduce the contact area between the adjusting block 422 and the adjusting frame 421, thereby reducing the friction force between the two.

[0088] In summary, please refer to Figures 2 - 18The puncture core assembly provided by the present invention has components for driving, transmitting, and performing suturing operations. During suturing, a portion of the puncture core assembly and the sleeve assembly are located outside the puncture port, and a portion is located inside the puncture port. When starting the suturing operation, first move the lever arm 112 of the turntable 11 along the first circumferential direction, and the lever arm 112 rotates along the first circumferential direction to drive the first transmission assembly 41 to rotate. The first transmission assembly 41 drives the positioning blade of the positioning assembly 61 to rotate outward. After the positioning blade pivots outward, it protrudes from the outer surface of the rod wall tube 3, and the puncture core assembly is pulled upward, so that the upper end of the positioning blade abuts against the fascia layer on both sides of the puncture port to achieve positioning; after the positioning blade pivots, the space where the suturing assembly 62 is located in the accommodating space A is exposed, and the space where the suturing assembly 62 is located is the suturing channel 53. Pressing the gland 12 downward causes the gland 12 to move downward, and the gland 12 moves downward to drive the second transmission assembly 42 to move downward, and the upper tooth segment 425a of the rack 425 of the second transmission assembly 42 moves downward to drive the suture assembly 62 to rotate, and the suture piece 621 in the suture assembly 62 rotates along the first direction, and the suture piece 622 rotates along the second direction, so as to achieve needle removal and suture. After the two suture needles rotate, they enter the receiving assembly 63, and the suture needle 627 of the suture piece 621 is received by the receiving piece 631, and the suture needle of the suture piece 622 is received by the receiving piece 632. The lower tooth segment 425b of the rack 425 moves downward to drive the first wall shell 71 and the second wall shell 72 to pivot relative to each other, thereby opening the tip inner cavity, and the suture thread release part in the tip inner cavity is separated from the inner cavity under the action of gravity and the elastic force of the suture thread itself and unfolds to form a curved segment, so as to achieve the release of the suture thread. Continue to press the cover 12 downward, so that the cover 12 moves an empty stroke. At this time, the second transmission assembly 42 and the suturing assembly 62 remain fixed, and the push foot 124 pushes the third transmission assembly 43 downward. The third transmission assembly 43 pushes the movable members 641 and 642 to move downward. The limiting slit 641a of the movable member 641 clamps the suturing needle 627, and the limiting slit of the movable member 642 clamps the suturing needle of the suturing member 622, so that the needle is fixed. Pull the cover 12 upward, and the cover 12 moves upward to move the second transmission assembly 42 upward. The upper tooth segment 425a of the rack 425 of the second transmission assembly 42 causes the suturing assembly 62 to rotate in the opposite direction. The two second suturing arms of the suturing assembly 62 are separated from the suturing needles connected to them, and the first suturing arm and the second suturing arm rotate back to the accommodating space A, so that the suturing assembly 62 is reset. The lower tooth segment 425b of the rack 425 causes the first wall shell 71 and the second wall shell 72 to pivot relative to each other, and the first wall shell 71 and the second wall shell 72 are closed again, so as to realize the reset of the puncture tip 7. In the process of pulling the pressure cover 12 upward, the push foot 124 is away from the third transmission assembly 43, and the third transmission assembly 43 and the needle fixing assembly 64 remain stationary.After lifting the gland 12 to the first position, the dialing arm 112 is dialed in the second circumferential direction. The rotation of the dialing arm 112 in the second circumferential direction drives the first transmission component 41 to rotate in the second circumferential direction. The first transmission component 41 drives the positioning vane to pivot inward, and the positioning vane changes from the open state to the closed state, realizing the reset of the positioning component 61, as. Figure 18 As shown. Then, the entire puncture device is lifted upward, and the two ends of the suture are brought out of the puncture port by the puncture core assembly. The suture is cut so that each end of the suture is separated from the rest of the suture. The suture is twitched out of the puncture port, causing the puncture port to tighten, and the suture is knotted to complete the suturing operation.

[0089] The "sutureable position" described in the present invention means that when the puncture core assembly is in this position, the suture assembly 62 is driven, and the suture needle of the suture assembly 62 can rotate to penetrate into the tissue around the puncture port, penetrate out from the side of the puncture port and enter the needle receiving assembly 63.

[0090] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0091] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0092] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0093] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0094] The above are only the preferred embodiments of the present invention, and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A positioning mechanism for a puncture core assembly, characterized in that, The positioning mechanism includes a positioning operation component and a positioning component. The positioning operation component is configured to drive the positioning component to rotate about the first axial direction of the puncture core component as the central axis. The positioning component includes positioning blades which are rotatably arranged. The positioning blades have an open state and a closed state. In response to the positioning blades switching from the closed state to the open state, at least part of the positioning blades protrudes outwards to abut against the tissues on both sides of the puncture opening.

2. The positioning mechanism for a puncture core assembly according to claim 1, characterized in that, The positioning operation component includes a toggling member. In response to a force being applied to the toggling member along the circumferential direction of the puncture core component, the positioning operation component rotates about the second axial direction of the puncture core component as the central axis, thereby driving the positioning component to rotate. The first axial direction and the second axial direction are parallel to each other.

3. The positioning mechanism for the puncture core assembly according to claim 2, characterized in that, The second axial direction is the central axis of the puncture core component.

4. The positioning mechanism for a puncture core assembly according to claim 2 or 3, characterized in that, The positioning mechanism further includes a positioning transmission component. The proximal end of the positioning transmission component is fixedly connected to the toggling member, and the distal end of the positioning transmission component is drivingly connected to the proximal end of the positioning component.

5. The positioning mechanism for the puncture core assembly according to claim 4, characterized in that, The distal end of the positioning transmission component includes a protruding portion, and the proximal end of the positioning component includes a receiving groove. The protruding portion is movably received in the receiving groove so that the distal end and the proximal end of the positioning transmission component are drivingly connected.

6. The positioning mechanism for the puncture core assembly according to claim 5, characterized in that, The receiving groove is a kidney-shaped groove.

7. The positioning mechanism for a puncture core assembly according to claim 5, wherein, The distal end of the positioning transmission component is a rotating ring, and the protruding portion is formed by protruding outwards from the upper surface or the lower surface of the rotating ring.

8. The positioning mechanism for the puncture core assembly according to claim 5, wherein The positioning component further includes an assisting arm and a pivot shaft. The assisting arm extends laterally from the proximal end of the pivot shaft. The assisting arm includes the receiving groove, and the positioning blades are located at the distal end of the pivot shaft.

9. The positioning mechanism for the puncture core assembly according to claim 1, wherein, The puncture core component further includes a suturing mechanism and a suture releasing mechanism.

10. The positioning mechanism for a puncture core assembly according to claim 1, wherein, When the positioning blades are in the open state, the suture channel of the puncture core component is exposed.

11. The positioning mechanism for the puncture core assembly according to claim 1, characterized in that, The positioning component rotates about the first axial direction as the central axis to realize the conversion between the closed state and the open state.

12. The positioning mechanism for the puncture core assembly according to claim 11, wherein, When the positioning component is in the closed state, the positioning blades are flush with the outer surface of the puncture core component. When the positioning component is in the open state, the positioning blades protrude from the outer surface of the puncture core component.

13. The positioning mechanism for the puncture core assembly according to claim 12, characterized in that, The positioning blades have an upper surface which is perpendicular to the central axis of the puncture core component. When the positioning component is in the open state, a surface contact is formed between the upper surface of the positioning blades and the tissues.

14. A puncture core assembly, comprising a suture mechanism and a positioning mechanism, characterized in that, The positioning mechanism is the positioning mechanism according to any one of claims 1 to 13. The suturing mechanism includes two suturing members, and each suturing member includes a suturing arm and a suturing needle. The end of the suture is fixed to the suturing needle. The two suturing members are used to be driven to rotate to perform needle suturing.

15. A sutureable trocar, comprising a trocar core assembly and a cannula assembly, the cannula assembly including a cannula, and the trocar core assembly being removably sleeved on the cannula; characterized in that, The puncture core component is the puncture core component according to claim 14.

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