Suture line releasing mechanism, puncture core assembly and puncture outfit capable of being sutured

Abstract

The invention provides a suture line releasing mechanism, a puncture core assembly and a suturing puncture outfit. The suture line releasing mechanism comprises a first wall shell and a second wall shell; the suture line releasing mechanism has an initial state and a termination state, in the initial state, the first wall shell and the second wall shell are folded to define an inner cavity, and the inner cavity is used for containing a suture line; and in the termination state, the first wall shell is separated from the second wall shell, so that the puncture outfit with the puncture core assembly becomes a suturable puncture outfit which is complete in function and occupies less layout space.

Description

Technical Field

[0001] The present invention relates to surgical instruments, and more particularly, to a suture release mechanism, a puncture core assembly, and a suture-capable 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 to allow an anastomosis device or other surgical instruments (such as an endoscope) 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 a surgery, a doctor generally makes a small incision in the human tissue of a patient first, and then while aligning the puncture tip of the puncture core assembly with the made small incision and moving the trocar downward while reciprocally rotating it left and right, guides the cannula assembly through the cortex of the patient's human tissue by the puncture core assembly; then the puncture core assembly is pulled out, and an anastomosis device or other surgical instruments can enter and exit the patient's body cavity through the cannula assembly for operations. The existing puncture core assembly only serves for puncturing, and is discarded after guiding the cannula assembly to enter the patient's body from the incision in the human abdomen.

[0004] At the end of the surgery, the cannula assembly is taken out from the puncture opening, and the puncture opening is sutured. Since the puncture opening of minimally invasive surgery is small and deep, especially for obese patients with relatively thick human tissue, if sutured improperly, the patient is prone to complications such as incisional hernia after the surgery. Special suture instruments can be used to suture the puncture opening to reduce the above complications, but this requires additional surgical instruments, with a high suture cost, and there are many surgical instruments and inconvenient operations; moreover, the suture device for specifically suturing the puncture opening has a complex structure and is inconvenient to use. Therefore, a trocar with a suture function can be used.

[0005] To achieve accurate suturing, a trocar with a suture function should first position the human 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 suture-capable trocars have inaccurate positioning, inconvenient operation of the positioning device, and how to arrange the device for driving the positioning action and the device for performing the positioning action within the limited accommodation space of the trocar has become a technical problem 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 line to enter the puncture opening from the outside of the puncture opening, it then penetrates into the puncture opening from the side, and exits from the human tissues on both sides of the puncture opening. Using this suture method, it is not necessary to send the suture line 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, thereby expanding the puncture opening, resulting in an unsatisfactory suture effect and being unable 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 line to penetrate from the lowest layer (i.e., the fascia layer) of the tissues on both sides of the puncture opening, and exits 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 line needs to be sent into the body before suturing. How the suture driving device and the suture execution device adopt a structure to achieve the corresponding functions has become a technical problem to be solved. Placing the suture line in the puncture core assembly and making the suture line follow the puncture core assembly into the puncture opening is a feasible way. However, how to place the suture line in the puncture core assembly, how to release the suture line and cooperate with the needle - exiting for suture have become technical problems to be solved when using the above - mentioned suture method. In addition, within the limited accommodation space of the trocar, 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 line has also become a technical problem that those skilled in the art need to further solve.

[0007] In some existing suturable trocars, the suture assembly for suturing includes a suture arm and a suture needle located at the end of the suture arm. The suture needle is tied with a suture line. After suturing, it is necessary to separate the suture needle from the suture arm to leave the suture line 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 suturable trocars 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 trocar, and the accommodation space of the trocar is very limited. Summary of the Invention

[0009] To solve the above problems, the present invention provides a suture - releasing mechanism, a puncture core assembly, and a suturable trocar.

[0010] To achieve the above object, according to one aspect of the present invention, a suture release mechanism is provided. The suture release mechanism includes a first wall shell and a second wall shell; the suture release mechanism has an initial state and a termination state. In the initial state, the first wall shell and the second wall shell are closed to enclose an inner cavity for accommodating sutures; in the termination state, the first wall shell and the second wall shell are separated.

[0011] Further, the first wall shell and the second wall shell are of different sizes.

[0012] Further, the first wall shell and the second wall shell pivot relative to each other to realize the conversion between the initial state and the termination state.

[0013] Further, a toothed member is provided on one of the first wall shell and the second wall shell; alternatively, toothed members are provided on both the first wall shell and the second wall shell.

[0014] Further, the suture release mechanism further includes a suture release operation component and a suture release transmission component. The suture release operation component is pressed or lifted to drive the suture release transmission component to move linearly, and the suture release transmission component drives the first wall shell and the second wall shell to pivot relative to each other.

[0015] Further, the suture release operation component abuts against the suture release transmission component to drive the suture release transmission component.

[0016] Further, the suture release transmission component includes a rack.

[0017] Further, teeth are provided on partial regions of two opposite sides of the rack, and the partial regions on the two sides are symmetric to each other; alternatively, teeth are provided on a partial region of one side of the rack.

[0018] Further, in the initial state, after the first wall shell and the second wall shell are closed, a puncture tip is formed, and the inner cavity is the inner cavity of the puncture tip.

[0019] Further, the puncture core assembly further includes a suture mechanism. The suture mechanism includes a suture operation component, a suture transmission component, and a suture execution component. The suture operation component drives the suture execution component through the suture transmission component. The suture execution component includes a suture needle; both the suture transmission component and the suture release transmission component include racks, and the racks are the same one.

[0020] According to another aspect of the present invention, a puncture core assembly is provided, which includes a suture mechanism and a suture release mechanism. The suture release mechanism is the above-mentioned suture release mechanism. The suture mechanism includes two suture members, and each suture member includes a suture arm and a suture needle tip. The end of the suture is fixed to the suture needle tip; the two suture members are driven to rotate to realize needle - out suturing.

[0021] According to another aspect of the present invention, there is provided a sutureable trocar, including a trocar core assembly and a cannula assembly. The cannula assembly includes a cannula, and the trocar core assembly is removably sleeved on the cannula; the trocar core assembly is the above-mentioned trocar core assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0023] Figure 1 is a schematic structural diagram of the trocar provided by the present invention;

[0024] Figure 2 is a schematic structural diagram of the trocar core assembly provided by the present invention;

[0025] Figure 3 is Figure 2 an exploded view of;

[0026] Figure 4 is a schematic structural diagram of the components required for positioning when positioning is not performed;

[0027] Figure 5 is a schematic connection diagram of the swivel and the positioning member;

[0028] Figure 6 is a schematic structural diagram of the components required for positioning after positioning is performed;

[0029] Figure 7 is a schematic structural diagram of the component driven by the gland;

[0030] Figure 8 is a schematic structural diagram of an angle of the gland;

[0031] Figure 9 is Figure 8 a schematic structural diagram of another angle;

[0032] Figure 10 is a schematic structural diagram of the adjustment frame and the adjustment block;

[0033] Figure 11 is a schematic diagram of the suture assembly when needle ejection is not performed;

[0034] Figure 12 is a schematic structural diagram of the receiving member;

[0035] Figure 13 is a schematic structural diagram of the trocar core assembly when the needle ejection action, the needle receiving action, and the suture release action are completed;

[0036] Figure 14 The trocar core assembly is at Figure 12A cross-sectional view of the state;

[0037] Figure 15 It is a schematic diagram of the structure of the components required to realize the needle receiving action and the needle fixing action;

[0038] Figure 16 is a structural schematic diagram when the driving pressure plate is in the second position;

[0039] Figure 17 is a schematic diagram of the structure of the needle fixing assembly when the needle fixing is completed;

[0040] Figure 18 It is a schematic diagram of the structure of the puncture core component after the suturing component is repositioned.

[0041] The above drawings include the following reference numerals:

[0042] 1. Operation components;

[0043] 11, turntable; 111, lower cover; 112, lever arm; 113, blocking sheet; 113a, first guiding slope;

[0044] 12, gland; 121, pressing plate; 122, notch; 122a, slit; 1221, rib plate group; 123, circumferential wall; 124, push foot; 1241, push foot plate;

[0045] 2. abutment plate; 21. central through hole;

[0046] 3. Rod wall tube; 31. Window; 32. Deformation sheet;

[0047] 4. Transmission components;

[0048] 41. first transmission assembly; 411. first transmission tube; 412. transmission arm; 413. swivel;

[0049] 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;

[0050] 43. third transmission assembly; 431. upper transmission ring; 432. connecting rod; 433. third transmission tube; 434. lower transmission ring; 435. booster arm;

[0051] 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;

[0052] 6. Execution component;

[0053] 61. Positioning component; 611. Auxiliary driving arm; 6111. Kidney-shaped groove; 612. Pivot shaft; 613. Positioning blade; 614. Protrusion;

[0054] 62. Suture component; 621, 622. Suture parts; 623. Gear; 624. Rotating shaft; 625. First suture arm; 626. Second suture arm; 627. Suture needle;

[0055] 63. Receiving component; 631, 632. Receiving parts; 6311. Receiving part; 6312. Clamping part; 6313. Receiving piece; 6314. Blocking arm;

[0056] 64. Needle fixing component; 641, 642. Movable parts; 641a. Limiting slit;

[0057] 7. Puncture tip; 71. First wall shell; 72. Second wall shell; 711; 721. Toothed parts; 7111. First limiting protrusion; 712. First support shaft; 722. Second support shaft; 73. Protrusion;

[0058] 8. Insert block component; 81. Button; 82. Hook; 83. Spring;

[0059] 9. Cover body; 91. Round hole; 92. Circumferential through hole. Detailed implementation manners

[0060] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0061] It should be pointed out that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0062] In the present invention, unless otherwise stated, the orientation terms such as "upper, lower" are usually in the directions shown in the drawings, or in the vertical, perpendicular or gravitational directions; similarly, for the convenience of understanding and description, "left, right" are usually in the left and right shown in the drawings; "inside, outside" refer to the inside and outside relative to the contours of the respective components, but the above orientation terms do not limit the present invention.

[0063] Please refer to Figure 1 , the present invention provides a puncture device, which includes a cannula assembly (not labeled) and a puncture core assembly partially sleeved in the cannula assembly. Please refer to Figure 2 and Figure 3, the puncture core assembly includes an operating assembly 1, an abutting disc 2, a rod wall tube 3, a transmission assembly 4, a support assembly 5, an execution assembly 6, a puncture tip 7, an insertion block assembly 8, and a cover body 9. The cover body 9 covers the upper surface of the abutting disc 2 to prevent foreign objects from falling into the abutting disc 2 and affecting the realization of the functions of the puncture core assembly. A cylinder 91 is provided in the center of the cover body 9. The cylinder 91 is sleeved outside the operating assembly 1. The part of the operating assembly 1 exposed outside the cylinder 91 can be manipulated by a 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 opened in the center of the abutting disc 2. The transmission assembly 4 passes through the central through hole 21. Below the transmission assembly 4 is the support assembly 5. The support assembly 5 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 outside the transmission assembly 4. The proximal end of the rod wall tube 3 is connected to the lower surface of the abutting disc 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 unobstructed. The outer surface of the rod wall tube 3 is the outer surface of the puncture core assembly. The end face of the distal end of the rod wall tube 3 extends downward to form two symmetric deformation pieces 32. A relief groove 54 is provided at the junction of the upper half 5' and the lower half 5'', as 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 bend. 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 as to fix the rod wall tube 3 to the upper half part of the support assembly 5, and further connect the rod wall tube 3 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 separably connected to the lower surface of the abutting disc 2. The insert block assembly 8 is used to achieve the separable 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 below 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 here. In the present invention, based on the attached Figure 2 In the shown positional relationship, the end of the puncture tip 7 in the puncture core assembly where it is located is called the distal end or the lower end, the end of the operation assembly 1 in the puncture core assembly where it is located is called the proximal end or the upper end, the side close to the central axis of the rod wall tube 3 is called the inner side, the side far from the central axis of the rod wall tube 3 is called the outer side, the radial direction of the rod wall tube 3 is called the radial direction, the direction of the central axis of the rod wall tube 3 is called the axial direction, the direction perpendicular to the axial direction is called 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.

[0064] 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 insert 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 insert 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 out for suture, releasing the suture, receiving the needle, fixing the needle, and resetting. Further, after the puncture core assembly is reset, the doctor can pull out the puncture core assembly and tie the suture. Among them, the operations of needle out for suture and releasing the suture start to be executed synchronously, and the operation of releasing the suture is completed prior to the operation of needle out for suture.

[0065] 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, enabling the execution component 6 and the puncture tip 7 to perform a 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 a positioning action and form a suturing channel, such that the positioning action and the formation of the suturing 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 actuate and drives the puncture tip 7 to open. The suturing component 62 actuates to perform a needle-out suturing action, and the puncture tip 7 opens to perform a suture thread release action, such 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 a 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 a needle fixing action; resetting refers to the resetting 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 suturing needle. The puncture tip can be referred to as a suture thread release execution component. The first transmission component can also be referred to as a positioning transmission component, the second transmission component can also be referred to as a suturing transmission component and a suture thread release transmission component, and the third transmission component can also be referred to as a suture needle fixing transmission component.

[0066] 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 with 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 symmetrical transmission arms 412, and a swivel 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 with 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 symmetrical 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 swivel ring 413. The swivel ring 413 is located between the first support member 51 and the second support member 52, and the swivel ring 413 is drivingly connected to the positioning assembly 61.

[0067] The positioning assembly 61 includes two symmetrically arranged and structurally identical positioning members (not labeled). 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. Each positioning member has a protruding portion 614 extending axially upward at the upper end and a protruding portion 614 extending axially downward at the lower end. 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 protruding portion 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 simplicity of 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 swivel ring 413, thereby realizing the rotation of the swivel ring 413 to drive the assisting arm 611 to rotate about the axis of the line connecting the two protruding portions 614 (i.e., the axis where the pivot shaft 612 is located), and further realizing the rotation of the swivel 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 swivel ring 413 can drive the assisting arm 611 to rotate. Specifically, the swivel ring 413 is provided with a protruding portion (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, and the assisting arm 611 is located within the relief space 511. 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.

[0068] When the turntable 11 is not rotating and is in the initial position, the dial arm 112 is located at one end of the circumferential through hole 92. The doctor rotates the dial arm 112 in the first circumferential direction. The dial arm 112 rotates in the first circumferential direction within the circumferential through hole 92. The dial arm 112 drives the first transmission assembly 41 to rotate in the first circumferential direction. The first transmission tube 411 rotates in the first circumferential direction. The first transmission tube 411 drives the transmission arm 412 to move in the first circumferential direction. The transmission arm 412 drives the rotating ring 413 to rotate in the first circumferential direction. The rotating ring 413 drives the two symmetrical assisting arms 611 of the positioning assembly 61 to rotate. The two symmetrical assisting arms 611 respectively drive the two pivot shafts 612 to rotate self. The two pivot shafts 612 respectively drive the two positioning vanes 613 to pivot outwards, so that the two positioning vanes 613 change from the state flush with the outer surface of the rod wall tube 3 to the state protruding from the outer surface of the rod wall tube 3, that is, change from the closed state to the open state. The two positioning vanes 613 protrude from the outer surface of the rod wall tube 3 and can abut against the tissues on both sides of the puncture opening, thereby realizing the positioning function. When the dial arm 112 rotates to the other end of the circumferential through hole 92, the hole wall of the circumferential through hole 92 blocks the dial arm 112 from continuing to rotate in the first circumferential direction, so that the positioning vane 613 stops rotating. At this time, the turntable 11 is in the termination position. When the positioning assembly 61 performs the reset action, the dial arm 112 is rotated in the second circumferential direction. The first circumferential direction and the second circumferential direction are opposite. According to the above action transmission relationship, the first transmission assembly 41 rotates in the second circumferential direction and drives the two pivot shafts 612 to rotate reversely self. The two pivot shafts 612 respectively drive the two positioning vanes 613 to pivot inwards, so that the two positioning vanes 613 return from the state protruding from the outer surface of the rod wall tube 3 to the state flush with the outer surface of the rod wall tube 3, that is, return from the open state to the closed state, realizing the reset of the positioning assembly 61.

[0069] There is an interval space between the first support member 51 and the second support member 52. This interval space is defined as the accommodation space A. The accommodation space A is used to accommodate the suture assembly 62. When the positioning vane does not rotate, the positioning vane closes the part of the accommodation space A where the suture assembly 62 is located; when the positioning vane rotates, the part of the accommodation space A where the suture assembly 62 is located is exposed, exposing the suture channel 53. The suture assembly 62 can move through the suture channel 53 to the outside of the rod wall tube 3, thereby performing the needle-out action.

[0070] Please refer to Figures 7 - 9, the gland 12 includes a pressing plate 121, a circumferential wall 123, and two symmetrical 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 symmetrical notches 122, and both of the two 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. 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 and 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 stroke, 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.

[0071] Please refer to Figure 7 , the second transmission assembly 42 includes an adjusting part (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 symmetric 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 push 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. 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, passes through the first transmission assembly 41, and then forms a distal end 424b, and the distal end 424b is connected to the rack 425. Teeth are provided on both sides of the rack 425, and the teeth on both sides are divided into two sections from top to bottom, namely the upper tooth section 425a and the lower tooth section 425b. The upper tooth section 425a is symmetrically provided with teeth on both sides. 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. The lower tooth section 425b is provided with teeth on at least one side. 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.

[0072] Please refer to Figure 11, the suture assembly 62 includes sutures 621 and 622 with the same structure. For the sake of brevity in description, only the suture 621 will be introduced below. The suture 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 622, so that the rotating shaft of the suture 622 and the rotating shaft 624 of the suture 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 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 pass 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 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 passes through the human tissue on the other side of the puncture opening. The first direction is opposite to the second direction.

[0073] Please refer to Figure 12, after the suture needle drives the end of the suture thread through the human tissue around the puncture opening, 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 accommodating 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 meshes of the elastic mesh piece or the hollowed-out structure of the elastic hollowed-out piece are used to clamp the suture needle 627. A window 31 is opened in the rod wall tube 3. The receiving piece 6313 is located in the window 31. After the suture needle 627 passes through the human tissue on one side of the puncture opening, 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.

[0074] In the present invention, the puncture opening is regarded as a hole. Above the hole is the outside of the body, below the hole is the inside of the body, and 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 sutured better. 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, 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.

[0075] Please refer to Figure 13 and 14, the puncture tip 7 is conical. The puncture tip 7 has a tip inner cavity inside, and the release part of the suture is accommodated in the tip inner cavity. When the puncture tip 7 is opened, due to gravity and its own elasticity, the release part of the suture unfolds to form a curved section below the puncture tip 7, 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. After the first wall shell 71 and the second wall shell 72 are closed, the tip inner cavity is formed. The first wall shell 71 and the second wall shell 72 can be engaged with each other to make the two closed stably. Specifically, a groove (not shown) is provided on the side of one of the first wall shell 71 and the second wall shell 72, and a protrusion 73 is provided on the side of the other. The protrusion 73 is held in the groove to engage the first wall shell 71 and the second wall shell 72. The engagement 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 engagement 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 separation from each other. The pivoting means that the first wall shell 71 and / or the second wall shell 72 pivot 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 section 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 section 425b of the rack 425 and not on the other side. For the sake of simplicity of 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 section 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 a termination state. Since the present invention stitches the puncture opening from the inside out, the movement track 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 track 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 angle of pivoting of the first wall shell 71 and the second wall shell 72 and the length of 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 are no longer engaged with the lower tooth segment 425b. At this time, it is necessary to keep the puncture tip 7 in the terminated state and 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 limit protrusion 7111. The inner surface of the first support member 51 or the second support member 52 has a first limit card slot (not shown) for the first limit protrusion 7111 to slide. The size of a part of the first limit card slot is reduced so that it can have an interference fit with the first limit protrusion 7111. The said part of the first limit card slot corresponds to the position where the first limit protrusion 7111 is located in the first limit card slot 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 limit protrusion 711 rotates along the first direction following the toothed member 711. During the rotation process, the first limit protrusion 711 enters the first limit card slot and slides in the first limit card slot. After the first wall shell 71 is pivoted to the maximum angle, the first limit protrusion 711 is clamped in the first limit card slot, so that the toothed member 711 where the first limit protrusion 711 is located keeps its position. The toothed member 711 keeping its position makes the first wall shell 71 keep the open state; and / or, an end surface of the toothed member 721 protrudes transversely outward to form a second limit protrusion (not labeled). The inner surface of the first support member 51 or the second support member 52 has a second limit card slot (not shown) for the second limit protrusion to slide. The size of a part of the second limit card slot is reduced so that it can have an interference fit with the second limit protrusion. The said part of the second limit card slot corresponds to the position where the second limit protrusion is located in the second limit card slot 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 limit protrusion rotates along the second direction following the toothed member 711. During the rotation process, the second limit protrusion enters the second limit card slot and slides in the second limit card slot. After the second wall shell 72 is pivoted to the maximum angle, the second limit protrusion is clamped in the second limit card slot, so that the toothed member 721 where the second limit protrusion is located keeps its position. The toothed member 721 keeping its position makes the second wall shell 72 keep the open state. The first wall shell 71 and / or the second wall shell 72 keeping the open state makes the puncture tip 7 keep in 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.Pull up the pressing cover 12 so that the push foot plate 1241 abuts against the proximal end 424a of the transmission rod 424. The push foot plate 1241 pulls up 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 gear 623 rotates in the second direction and drives the rotating shaft 624, the first sewing arm 625, the second sewing arm 626, and the sewing needle 627 to rotate in the second direction. When 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 sewing part 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 the initial state, thus realizing the reset action of the sewing 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 asymmetric 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 sewing assembly 62 and the puncture tip 7 share a rack drive, realizing the synchronous movement of the two, meeting the action logic relationship between the two, and saving the layout space of the puncture device.

[0076] 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 pipe 433, a lower transmission ring 434, and two symmetric boosting arms 435. The upper transmission ring 431, the third transmission pipe 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 pipe 411. The distal ends of the connecting rods 432 are fixed to the proximal end of the third transmission pipe 433. The third transmission pipe 433 extends axially between the rod wall pipe 3 and the first transmission pipe 411. The distal end of the third transmission pipe 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 surfaces of the first limiting portion 56 and / or the second limiting portion 57 have 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 make the third transmission assembly 43 where the lower transmission ring 434 is located remain stationary when not pressed by the gland 12.

[0077] When the gland 12 is pressed and moves downward from the second position to the third position, the push plate 1241 of the gland 12 abuts against the upper transmission ring 431 and pushes the third transmission assembly 43 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 face where the accommodation hole 55 is located is the upper end faces of the first support member 51 and the second support member 52.

[0078] 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 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 move. The push plate 1241 needs to move down 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.

[0079] 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 symmetric movable members 641, 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 a reset. When the suture assembly 62 performs a 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 - axially in the second direction. The rotating shaft 624 drives the first suture arm 625 and the second suture arm 626 to rotate in the second direction. When the second suture arm 626 rotates, it intends 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. The 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, and the suture needle 627 continues to be clamped in the receiving member 631, thereby realizing the fixation of the suture needle 627. Since one end of the suture is tied to the suture needle 627, this end of the suture 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 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 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.

[0080] In the present invention, the suture assembly 62 performing the needle - out action, the puncture tip 7 performing the suture - releasing 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 - releasing 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.

[0081] 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.

[0082] 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. The adjusting block 422 then 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, thereby 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 fully 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 smaller 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 relatively within 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, thereby causing 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.

[0083] 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 protrusion 4221 protrudes outward from the side surface of the adjusting block 422, and a guiding groove 4212 for the radial movement of the guiding protrusion 4221 is provided on the adjusting frame 421. When the adjusting block 422 is at rest, the guiding protrusion 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 protrusion 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 ribs 4222 are provided on the surface of the adjusting block 422, and the anti-shaking ribs 4222 reduce the contact area between the adjusting block 422 and the adjusting frame 421, thereby reducing the friction force between the two.

[0084] 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 assembly 41 to rotate in the second circumferential direction. The first transmission assembly 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 assembly 61, as follows. 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, thus completing the suturing operation.

[0085] 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.

[0086] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0087] 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.

[0088] 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.

[0089] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned 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 different from those illustrated or described herein.

[0090] 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 suture release mechanism for a puncture core assembly, characterized in that, The suture release mechanism includes a first wall shell and a second wall shell; the suture release mechanism has an initial state and a termination state. In the initial state, the first wall shell and the second wall shell are closed to enclose an inner cavity for accommodating sutures; in the termination state, the first wall shell and the second wall shell are separated.

2. The suture release mechanism for a puncture core assembly according to claim 1, wherein The first wall shell and the second wall shell are of different sizes.

3. The suture release mechanism for a puncture core assembly according to claim 1, wherein, The first wall shell and the second wall shell pivot relative to each other to achieve the conversion between the initial state and the termination state.

4. The suture release mechanism for a puncture core assembly according to claim 1, wherein, One of the first wall shell and the second wall shell is provided with a toothed member; alternatively, both the first wall shell and the second wall shell are provided with toothed members.

5. The suture release mechanism for a puncture core assembly according to claim 1, characterized in that, The suture release mechanism further includes a suture release operation component and a suture release transmission component. The suture release operation component is pressed or lifted to drive the suture release transmission component to move linearly, and the suture release transmission component drives the first wall shell and the second wall shell to pivot relative to each other.

6. The suture release mechanism for a puncture core assembly according to claim 5, wherein, The suture release operation component abuts against the suture release transmission component to drive the suture release transmission component.

7. The suture release mechanism for a puncture core assembly according to claim 5, wherein, The suture release transmission component includes a rack.

8. The suture release mechanism for a puncture core assembly according to claim 7, characterized in that, Parts of two opposite sides of the rack are provided with teeth, and the parts of the two sides are symmetric to each other; alternatively, a part of one side of the rack is provided with teeth.

9. The suture release mechanism for a puncture core assembly according to claim 1, wherein, In the initial state, after the first wall shell and the second wall shell are closed, a puncture tip is formed, and the inner cavity is the inner cavity of the puncture tip.

10. The suture release mechanism for a puncture core assembly according to claim 5, characterized in that, The puncture core assembly further includes a suture mechanism, which includes a suture operation component, a suture transmission component and a suture execution component. The suture operation component drives the suture execution component through the suture transmission component, and the suture execution component includes a suture needle; both the suture transmission component and the suture release transmission component include racks, and the racks are the same one.

11. A puncture core assembly, comprising a suturing mechanism and a suture releasing mechanism, characterized in that, The suture release mechanism is the suture release mechanism according to any one of claims 1 to 10. The suture mechanism includes two suture members, each suture member includes a suture arm and a suture needle tip, and the end of the suture is fixed to the suture needle tip; the two suture members are driven to rotate to perform suture needle insertion.

12. 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 assembly is the puncture core assembly according to claim 11.

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