A puncture core assembly and a puncture device having the puncture core assembly

Abstract

The present invention provides a puncture core assembly, comprising an operating assembly, a puncture core rod and a puncture tip for puncturing human tissue to form a puncture port, wherein the operating assembly is manipulated to generate a driving force, and the puncture core rod comprises a transmission assembly and an execution assembly, wherein the transmission assembly transmits the driving force, and the execution assembly comprises a suturing execution mechanism, a positioning assembly, a suturing assembly, a suture thread releasing assembly, and a suture needle fixing mechanism, which are respectively used for performing positioning, suturing needle removal, suture thread release, and receiving and clamping of the suture needle when suturing the puncture port, so that the puncture device having the above-mentioned puncture core assembly becomes a suturing puncture device with complete functions and less layout space.

Description

Technical Field

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

[0002] In minimally invasive surgical procedures such as abdominal surgery and thoracic surgery, the puncture device can establish an access channel in the body's cavity wall to allow 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 for inspection or surgical operations.

[0003] The puncture device includes a puncture core assembly and a cannula assembly. During the operation, the doctor generally makes a small incision on the patient's body tissue, then aligns the puncture tip of the puncture core assembly with the small incision and moves the puncture device downward while rotating it back and forth, 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 plays a puncture role, and is discarded after guiding the cannula assembly into the patient's body from the incision in the abdomen of the human body.

[0004] At the end of the operation, the cannula assembly is removed from the puncture port and the puncture port is sutured. Because the puncture port of minimally invasive surgery is small and deep, especially for obese patients whose body tissue is thicker, if the suturing is not done properly, the patient is prone to complications such as puncture port hernia after the operation. Special suturing instruments can be used to suturing the puncture port to reduce the above complications, but this requires additional surgical instruments, the suturing cost is high, and the surgical instruments are numerous and inconvenient to operate; in addition, the suturing instrument specifically used to suturing the puncture port has a complex structure and is inconvenient to use. Therefore, a puncture instrument with suturing function can be used.

[0005] In order to achieve accurate suturing, the puncture device with suturing function should first position the human tissue on both sides of the puncture before suturing, so a device capable of positioning is required in the puncture device. However, the existing suturing puncture device has inaccurate positioning, the positioning device is inconvenient to operate, 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 puncture device has become a technical problem that needs to be solved by those skilled in the art.

[0006] After performing the positioning action, the needle withdrawal action is performed to suture the puncture port. In actual operation, there are two ways to sew the puncture port. The first sew method is: the suture needle drives the suture thread to enter the puncture port from the outside of the puncture port, and then penetrates from the side of the puncture port and comes out from the human tissue on both sides of the puncture port. When using this sew method, the suture thread does not need to be sent into the body in advance, but the suture needle will apply a thrust to the side of the puncture port when penetrating from the side of the puncture port, thereby expanding the puncture port, the sew effect is not ideal, and the fascia layer cannot be sutured; the second sew method is: sew the puncture port from the inside to the outside or from the outside to the inside, and the sew track is a straight line. This sew method cannot achieve accurate positioning or clamping of the tissue, and it is easy to cause sew failure. The following sew method is more ideal: the suture needle drives the suture thread to penetrate from the bottom layer of the tissue on both sides of the puncture port (i.e., the fascia layer) and come out from the side of the puncture port, so that the fascia layer can be sutured relatively well. However, the implementation of this suturing method requires corresponding suturing drive devices and suturing execution devices, and the sutures need to be delivered into the body before suturing. What kind of structure the suturing drive device and the suturing execution device adopt to achieve the corresponding functions has become a technical problem that needs to be solved. It is a feasible way to place the suture in the puncture core assembly and let the suture follow the puncture core assembly into the puncture port, but how to place the suture in the puncture core assembly, how to release the suture and cooperate with the suturing needle have become technical problems that need to be solved when using the above-mentioned suturing method. In addition, in the limited accommodation space of the puncture device, how to arrange the suture drive device, suture execution device, drive device and execution device that release the suture function has also become a technical problem that needs to be further solved by those skilled in the art.

[0007] In some existing sutureable puncture devices, the suture assembly used for suturing includes a suture arm and a suture needle located at the end of the suture arm, and the suture needle is tied with a suture thread. After suturing, the suture needle needs to be separated from the suture arm to leave the suture thread carried by the suture needle. However, the suture needle and the suture arm require a large external force to separate the two. The needle receiving assembly used to leave 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 of the suture needle to reduce the probability of failure to separate the suture arm and the suture needle has become a technical problem that needs to be solved by those skilled in the art.

[0008] Existing suturing puncture instruments do not have a device for preventing misoperation. In addition, arranging a device with a function of preventing doctors from misoperating will occupy the accommodating space of the puncture instrument, and the accommodating space of the puncture instrument is very limited. Summary of the invention

[0009] In order to solve the above problems, the present invention provides a positioning mechanism for a puncture core assembly.

[0010] A positioning mechanism for a puncture core assembly comprises a positioning operation assembly and a positioning assembly. The positioning assembly is driven by the positioning operation assembly to rotate with a first axial direction of the puncture core assembly as a central axis.

[0011] Furthermore, the positioning operation assembly includes a toggle member, which is applied with a force along the circumference of the puncture core assembly, thereby driving the positioning operation assembly to rotate with the second axial direction of the puncture core assembly as the central axis to drive the positioning assembly; the first axial direction is parallel to the second axial direction but not coaxial.

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

[0013] Furthermore, the positioning mechanism further includes a positioning transmission assembly, the proximal end of the positioning transmission assembly is fixedly connected to the toggle member, and the distal end of the positioning transmission assembly is drivably connected to the proximal end of the positioning assembly.

[0014] Furthermore, the distal end of the positioning transmission assembly includes a protruding portion, and the proximal end of the positioning assembly includes a receiving groove; the protruding portion is movably received in the receiving groove to form the drivable connection.

[0015] Furthermore, the accommodating groove is a waist-shaped groove.

[0016] Furthermore, the positioning assembly includes a positioning blade, and after the positioning blade rotates, the suturing channel of the puncture core assembly is exposed.

[0017] Furthermore, the distal end of the positioning transmission assembly is a rotating ring, and the protruding portion is formed by protruding from the upper surface or the lower surface of the rotating ring.

[0018] Furthermore, the positioning assembly includes an auxiliary arm, a pivot shaft and a positioning blade, the auxiliary arm extends laterally from the proximal end of the pivot shaft, the auxiliary arm includes the accommodating groove, and the positioning blade is located at the distal end of the pivot shaft.

[0019] Furthermore, the puncture core assembly also includes a suturing mechanism and a suture releasing mechanism.

[0020] Furthermore, the positioning component has a closed state and an open state; the conversion between the closed state and the open state is achieved by the positioning component rotating with the first axial direction as the central axis.

[0021] Furthermore, the positioning assembly includes a positioning blade; in the closed state, the positioning blade is flush with the outer surface of the puncture core assembly; in the open state, the positioning blade protrudes from the outer surface of the puncture core assembly.

[0022] Furthermore, the positioning blade has an upper surface, and the upper surface is perpendicular to the central axis of the puncture core assembly; in the open state, the upper surface of the positioning blade contacts the tissue formation surface.

[0023] A suture release mechanism for a puncture core assembly, the suture release mechanism comprising a first wall shell and a second wall shell; the suture release mechanism has an initial state and a terminal state, in the initial state, the first wall shell and the second wall shell are closed, in the terminal state, the first wall shell and the second wall shell are separated; when the first wall shell and the second wall shell are closed, they surround each other to form an inner cavity, and the inner cavity is used to accommodate the suture.

[0024] Furthermore, the first wall shell and the second wall shell are different in size.

[0025] Furthermore, the first wall shell and the second wall shell are relatively pivoted to achieve the conversion between the initial state and the final state.

[0026] Further, one of the first wall shell and the second wall shell is provided with a toothed member; or, both the first wall shell and the second wall shell are provided with a toothed member.

[0027] Furthermore, the suture release mechanism also includes a suture release operating component and a suture release transmission component. The suture release operating component is pressed or pulled 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.

[0028] Furthermore, the suture releasing operating assembly abuts against the suture releasing transmission assembly to drive the suture transmission assembly.

[0029] Furthermore, the suture release transmission assembly includes a rack.

[0030] Further, parts of two opposite side surfaces of the rack are both provided with teeth, and the parts of the two side surfaces are symmetrical to each other; or, parts of one side surface of the rack are provided with teeth.

[0031] Furthermore, in the initial state, the first wall shell and the second wall shell are closed together to form a puncture tip, and the inner cavity is the inner cavity of the puncture tip.

[0032] Furthermore, the puncture core assembly also includes a suturing mechanism, which includes a suturing operation assembly, a suturing transmission assembly and a suturing execution assembly. The suturing operation assembly drives the suturing execution assembly through the suturing transmission assembly, and the suturing execution assembly includes a suturing needle; the suturing transmission assembly and the suture thread release transmission assembly both include racks, and the racks are the same.

[0033] Furthermore, the suture needle fixing mechanism includes a movable member, and the movable member includes a slit extending from an end of the movable member, and the slit is used to clamp the suture needle.

[0034] Furthermore, the suture needle fixing mechanism also includes a suture needle fixing transmission assembly, the movable part is fixedly connected to the suture needle fixing transmission assembly, and the suture needle fixing transmission assembly drives the movable part to move linearly.

[0035] Furthermore, the suture needle fixed transmission assembly comprises, from top to bottom, an upper transmission ring, a connecting rod, a transmission tube, a lower transmission ring and two symmetrical booster arms. There are two connecting rods and they are symmetrically arranged with each other. The upper transmission ring is fixedly connected to the proximal ends of the two connecting rods, the distal ends of the two connecting rods are fixedly connected to the proximal ends of the transmission tube, the distal end of the transmission tube is fixedly connected to the lower transmission ring, the lower transmission ring is fixedly connected to the proximal ends of the two booster arms, and there are two movable parts, which are fixedly connected to the booster arms in a one-to-one correspondence.

[0036] Furthermore, the suture needle fixing mechanism also includes a suture needle fixing operating component, which, when pressed, abuts against the suture needle fixing transmission component to drive the suture needle fixing transmission component to move linearly, and the suture needle fixing operating component is separated from the suture needle fixing transmission component after being pulled.

[0037] Furthermore, the puncture core assembly also includes a suturing mechanism and a suture releasing mechanism, the suturing mechanism includes a suturing operating assembly, the suture releasing mechanism includes a suture releasing operating assembly, and the suturing needle fixing operating assembly, the suturing operating assembly, and the suture releasing operating assembly are the same operating assembly.

[0038] Furthermore, the same operating component includes a pressure cover, and the pressure cover is pressed or pulled to make the same operating component move downward or upward.

[0039] Furthermore, the suture needle fixing mechanism also includes a blocking arm, and the blocking arm is used to block the movable part that clamps the suture needle.

[0040] Furthermore, the suture needle fixing mechanism also includes a receiving component, and the receiving component includes a receiving sheet, and the receiving sheet is an elastic mesh sheet or an elastic hollow sheet for holding the suture needle.

[0041] A suturing mechanism for a puncture core assembly, the suturing mechanism comprising two suturing pieces, each of which comprises a suturing arm and a suturing needle, the suturing needle being detachably connected to the suturing arm, and the end of the suture thread being fixed to the suturing needle; the two suturing pieces are used to be driven to rotate to achieve needle removal suturing.

[0042] Furthermore, each of the suturing members further comprises a gear; the suturing mechanism further comprises a suturing transmission assembly, the suturing transmission assembly comprises a rack, and the gear is meshed with the rack.

[0043] Furthermore, the suturing mechanism also includes a suturing operation component, and the suturing operation component drives the suturing transmission component to move linearly.

[0044] Furthermore, the puncture core assembly also includes a suture release mechanism, and the suture release mechanism includes a suture release transmission assembly; the suture transmission assembly and the suture release transmission assembly both include a rack, and the rack is the same.

[0045] Furthermore, the puncture core assembly also includes a suture needle fixing mechanism and a suture release mechanism, the suture needle fixing mechanism includes a suture needle fixing operating assembly, the suture release mechanism includes a suture release operating assembly, and the suture needle fixing operating assembly, the suture operating assembly, and the suture release operating assembly are the same operating assembly.

[0046] Furthermore, the same operating component includes a pressure cover, and the pressure cover is pressed or pulled to make the same operating component move downward or upward.

[0047] A mechanism for preventing misoperation, wherein a first component comprises a wall, and a second component comprises a blocking portion; the mechanism for preventing misoperation comprises the wall and the blocking portion; in an initial position, the blocking portion abuts against the wall to prevent the first component from being misoperated and moving relative to the second component; the wall comprises a notch, and when the first component is rotated and located at another position, the notch accommodates the blocking portion, so that the first component is operated to move relative to the second component.

[0048] A mechanism for preventing misoperation, wherein a first component comprises an adjusting block and a spring, one end of the spring abuts against the adjusting block, and the other end abuts against other parts of the first component except the adjusting block, and the elastic force of the spring prevents the adjusting block from moving relative to the other parts; a second component comprises a blocking portion; the mechanism for preventing misoperation comprises the adjusting block, the spring and the blocking portion; the blocking portion has a first guiding slope, and the adjusting block has a second guiding slope; in an initial position, the first guiding slope abuts against the second guiding slope, when the force of misoperating the first component is insufficient to overcome the elastic force of the spring, the blocking portion abuts against the adjusting block to prevent the first component from being misoperated and moving relative to the second component; when the operating force is increased, the force overcomes the elastic force of the spring so that the adjusting block moves along the guiding slope toward the other parts of the second component, and when the adjusting block is disengaged from the blocking portion, the first component is operated to move relative to the second component.

[0049] Furthermore, the first component further includes another adjusting block, and the other end of the spring abuts against the other adjusting block.

[0050] Further, the first component includes a guiding groove, and the adjusting block includes a convex portion, and the convex portion is movably accommodated in the guiding groove.

[0051] A puncture core assembly comprises a suturing mechanism, wherein the suturing mechanism is a suturing mechanism for a puncture core assembly according to any one of the above-described suturing mechanisms.

[0052] Furthermore, the puncture core assembly further comprises a positioning mechanism, and the positioning mechanism is a positioning mechanism for the puncture core assembly according to any of the above-described positioning mechanisms.

[0053] Furthermore, the puncture core assembly further comprises a suture release mechanism, and the suture release mechanism is a suture release mechanism for the puncture core assembly according to any one of the above-described suture release mechanisms.

[0054] Furthermore, the puncture core assembly further comprises a suture needle fixing mechanism, and the suture needle fixing mechanism is a suture needle fixing mechanism for a puncture core assembly according to any of the above-described suture needle fixing mechanisms.

[0055] Furthermore, the puncture core assembly further includes a misoperation prevention mechanism, and the misoperation prevention mechanism is any one of the misoperation prevention mechanisms described above.

[0056] A sutureable puncture device comprises a puncture core assembly and a sleeve assembly, wherein the puncture core assembly is removably sleeved on the sleeve assembly; the puncture core assembly is any one of the puncture core assemblies described above.

[0057] A method for using a sutureable puncture device, the sutureable puncture device comprising a puncture core assembly and a sleeve assembly, the puncture core assembly being removably sleeved on the sleeve assembly, the puncture core assembly comprising a first operating assembly, a second operating assembly, a third operating assembly, a positioning blade, a rod wall tube, a suture piece, a suture thread release mechanism, and a suture thread, the suture piece comprising a suture needle; the method for using the suture device comprising the following steps:

[0058] (1) operating the first operating assembly so that the positioning blade rotates outward and the positioning blade protrudes from the outer surface of the rod wall tube;

[0059] (2) pulling the puncture core assembly or the sutureable puncture device upward, and the positioning blade realizes positioning;

[0060] (3) operating the second operating component to rotate the suturing element;

[0061] (4) operating the third operating component so that the suture releasing mechanism is opened, and the suture contained in the suture releasing mechanism is released;

[0062] (5) The suture piece is rotated into place and the suture needle is fixed;

[0063] (6) the suture needle is further fixed;

[0064] (7) operating the second operating component to return the suture piece;

[0065] (8) operating the third operating component to close the suture release mechanism;

[0066] (9) operating the first operating assembly to rotate the positioning blade inward;

[0067] (10) Pull up the puncture core assembly or the sutureable puncture device.

[0068] Furthermore, in the step (1), the operation is rotation.

[0069] Furthermore, the first operating component includes a turntable; the step (1) further includes: rotating the turntable, the turntable rotates along a first circumferential direction to drive the first transmission component to rotate, and the first transmission component drives the positioning blade to rotate outward.

[0070] Furthermore, the step (1) further includes: after the positioning blade is rotated outward, the suture channel is exposed.

[0071] Furthermore, in step (3) and step (4), the operation is pressing.

[0072] Furthermore, in step (3) and step (4), the second operating component and the third operating component are the same operating component.

[0073] Furthermore, the puncture core assembly includes a suturing assembly, the suturing assembly includes the suturing piece, and the suturing piece also includes a gear; the second operating assembly includes a pressure cover; the step (3) further includes: pressing the pressure cover to move it downward, the pressure cover moving downward drives the second transmission assembly to move downward, the rack of the second transmission assembly moves downward to drive the gear to rotate and thereby cause the suturing piece to rotate.

[0074] Furthermore, the third operating component includes a pressure cover; the step (4) further includes: pressing the pressure cover to move it downward, and the downward movement of the pressure cover drives the transmission component to move downward; the rack of the transmission component moves downward to drive the toothed part of the suture release mechanism to rotate, thereby opening the suture release mechanism.

[0075] Furthermore, the third operating component includes a pressure cover; the step (4) further includes: pressing the pressure cover to move it downward, and the downward movement of the pressure cover drives the transmission component to move downward; the rack of the transmission component moves downward to drive the toothed part of the suture release mechanism to rotate, thereby opening the suture release mechanism; the second transmission component in the step (3) and the transmission component in the step (4) are the same transmission component, the rack in the step (3) and the rack in the step (4) are the same rack, and the rotation of the suture needle and the opening of the suture release mechanism are performed synchronously.

[0076] Furthermore, the step (5) further includes that the suture needle is clamped and fixed by a receiving member.

[0077] Furthermore, the step (6) further includes: pressing the second operating component, the second operating component includes a pressure cover, the pressure cover pushes the third transmission component downward, the third transmission component pushes the movable part to move downward, and the slit of the movable part clamps the suture needle.

[0078] Furthermore, in step (7) and step (8), the operation is pulling.

[0079] Furthermore, in step (7) and step (8), the second operating component and the third operating component are the same operating component.

[0080] Furthermore, the second operating component includes a pressing cover; the step (7) further includes: pulling the pressing cover to move it upward, the pressing cover moving upward drives the second transmission component to move upward, the rack of the second transmission component moves upward to drive the gear of the suturing component to rotate, and then the suturing piece rotates back.

[0081] Furthermore, the third operating component includes a pressure cover; the step (8) further includes: lifting the pressure cover to move it upward, and the upward movement of the pressure cover drives the transmission component to move upward; the rack of the transmission component moves upward to drive the toothed part of the suture release mechanism to rotate, thereby closing the suture release mechanism.

[0082] Furthermore, in step (9), the operation is rotation.

[0083] Furthermore, the first operating component includes a turntable; the step (9) further includes: rotating the turntable, the turntable rotates along the second circumferential direction to drive the first transmission component to rotate, and the first transmission component drives the positioning blade to rotate inward.

[0084] Furthermore, in step (3) and step (4), the second operating component and the third operating component are the same operating component, and the third operating component includes a pressure cover; step (4) further includes: pressing the pressure cover to move it downward, and the downward movement of the pressure cover drives the transmission component to move downward; the rack of the transmission component moves downward to drive the toothed part of the suture release mechanism to rotate so as to open the suture release mechanism, the second transmission component in step (3) and the transmission component in step (4) are the same transmission component, the rack in step (3) and the rack in step (4) are the same rack, and steps (3) and (4) are started synchronously. BRIEF DESCRIPTION OF THE DRAWINGS

[0085] Figure 1 It is a schematic diagram of the structure of the puncture device provided by the present invention;

[0086] Figure 2 It is a structural schematic diagram of the puncture core assembly provided by the present invention;

[0087] Figure 3 yes Figure 2 Exploded diagram of

[0088] Figure 4 It is a schematic diagram of the structure of components required to achieve positioning when positioning is not performed;

[0089] Figure 5 It is a schematic diagram of the connection between the swivel and the positioning member;

[0090] Figure 6 It is a schematic diagram of the structure of components required to achieve positioning after positioning is performed;

[0091] Figure 7 It is a schematic diagram of the structure of the components that are driven to move by the gland;

[0092] Figure 8 It is a schematic diagram of the structure of the gland at an angle;

[0093] Fig. 9 yes Figure 8 Another angle structural diagram;

[0094] Fig.10 It is a schematic diagram of the structure of the adjustment frame and the adjustment block;

[0095] Fig.11 is a schematic diagram of the suturing assembly when the needle is not removed;

[0096] Fig.12 is a schematic diagram of the receiving component structure;

[0097] Fig.13 It is a schematic diagram of the puncture core assembly when the needle withdrawal action, the needle receiving action, and the suture release action are completed;

[0098] Fig.14 The puncture core assembly is Fig.12 A cross-sectional view of the state;

[0099] Fig.15 It is a schematic diagram of the structure of the components required to realize the needle receiving action and the needle fixing action;

[0100] Fig.16 is a structural schematic diagram when the driving pressure plate is in the second position;

[0101] Fig.17 is a schematic diagram of the structure of the suture needle fixing mechanism when the needle fixing is completed;

[0102] Fig.18 It is a schematic diagram of the structure of the puncture core component after the suturing component is repositioned.

[0103] Reference numerals

[0104] 1- Operational components,

[0105] 11-turntable, 111-lower housing, 112-moving arm, 113-blocking sheet, 113a-first guiding slope,

[0106] 12-pressing cover, 121-pressing plate, 122-notch, 122a-slit, 1221-rib plate group, 123-circumferential wall, 124-pushing foot, 1241-pushing foot plate,

[0107] 2-abutment plate, 21-central through hole,

[0108] 3-rod wall tube, 31-window, 32-deformation sheet,

[0109] 4- Transmission components,

[0110] 41-first transmission assembly, 411-first transmission tube, 412-transmission arm, 413-swivel,

[0111] 42-second transmission assembly, 421-adjusting frame, 4212-guide groove, 422-adjusting block, 422a-second guide slope, 4221-guide protrusion, 4222-anti-shake protrusion, 423-elastic member, 424-transmission rod, 424a-proximal end, 424b-distal end, 425-tooth bar, 425a-upper tooth segment, 425b-lower tooth segment,

[0112] 43-third transmission assembly, 431-upper transmission ring, 432-connecting rod, 433-third transmission tube, 434-lower transmission ring, 435-boost arm,

[0113] 5-support assembly, 5'-upper part, 5"-lower part, 51-first support member, 511-allowance space, 52-second support member, 53-suture channel, 54-allowance groove, 541, 542-groove wall, 55-accommodation hole,

[0114] 6-Execution component,

[0115] 61-positioning assembly, 611-assisting arm, 6111-waist-shaped groove, 612-pivot shaft, 613-positioning blade, 614-protrusion,

[0116] 62- suture assembly, 621, 622- suture pieces, 623- gear, 624- rotating shaft, 625- first suture arm, 626- second suture arm, 627- suture needle,

[0117] 63-receiving assembly, 631, 632-receiving parts, 6311-receiving part, 6312-holding part, 6313-receiving sheet, 6314-blocking arm,

[0118] 64- suture needle fixing mechanism, 641, 642- movable parts, 641a- limiting slit,

[0119] 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,

[0120] 8-insert block assembly, 81-button, 82-hook, 83-spring,

[0121] 9-cover body, 91-circumferential hole, 92-circumferential through hole. DETAILED DESCRIPTION

[0122] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. In the description of the present invention, the meaning of "several" is at least one, unless otherwise clearly and specifically defined.

[0123] The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0124] For ease of description, in the embodiments of the present invention, the end of all components close to the doctor is defined as the "proximal end" or "upper end", and the end away from the doctor, i.e., the end close to the patient's body, is defined as the "distal end" or "lower end". Connection includes direct connection and indirect connection. Connection includes fixed connection, movable connection, detachable connection, etc., unless otherwise clearly defined.

[0125] 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 clearance groove 54 is located between the end surface of the distal end of the deformation piece 32 and the end surface of the distal end of the rod wall tube 3. When the rod wall tube 3 is placed on the outer surface of the upper half 5', the clearance groove 54 has a space for the deformation piece 32 to bend. The deformation piece 32 is bent inwardly by a deformation tool 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 hook from moving axially, thereby preventing the rod wall tube 3 from moving axially. In addition, 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 of the support assembly 5. When the rod wall tube 3 is placed on the outer side of the upper half of the support assembly 5, the first pin hole and the second pin hole are made coaxial, and a fixing pin (not shown) is sequentially inserted into the coaxial first pin hole and the second pin hole, so that the rod wall tube 3 is fixed to the upper half of the support assembly 5, and then 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 abutment disk 2. The plug-in block assembly 8 is used to realize the detachable connection. The plug-in block assembly 8 includes two symmetrical plug-in blocks (not numbered), each of which includes a button 81, a hook 82 and a spring 83. The button 81 is movably connected to the top of the abutment disk 2, and the hook 82 is fixedly connected to the button 81 and extends from the button 81 to the bottom of the abutment disk 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 abutment disk 2. The hook 82 can be engaged with the sleeve assembly, and 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, thereby separating the abutment disk 2 from the proximal end of the sleeve assembly. The plug-in block assembly 8 is a prior art and will not be described in detail. In the present invention, based on the attached Figure 2 As shown in the positional relationship, the end where the puncture tip 7 in the puncture core assembly is located is called the distal end or the lower end, the end where the operating assembly 1 in the puncture core assembly is located is called the proximal end or the upper end, and the side close to the central axis of the rod wall tube 3 is called the inner side, and the side away 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, and the direction perpendicular to the axial direction is called the transverse direction, which 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 surface parallel to the circumferential direction is defined as the circumferential surface. The central axis of the rod wall tube 3 is the central axis of the puncture core assembly. The above-mentioned directions of the rod wall tube 3 are the corresponding directions of the puncture core assembly, and the above-mentioned surfaces of the rod wall tube 3 are the corresponding surfaces of the puncture core assembly. The outer surface of the puncture core assembly refers to the outer surface of the rod wall tube 3.

[0126] During the operation, the doctor first makes a small incision on 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 port, and inserts the lower end of the cannula assembly into the human body, separates the puncture core assembly from the cannula by pressing the plug assembly 8, and pulls out the puncture core assembly from the cannula, then inserts the surgical instrument into the cannula to perform the operation, and after the operation is completed, removes the surgical instrument, reinserts the puncture core assembly into the cannula, and re-engages the puncture core assembly and the cannula assembly through the plug assembly 8 to start the suturing operation. According to the operation sequence, the suturing operation process using the puncture core assembly provided by the present invention includes the following actions or steps: positioning, forming a suturing channel, removing the needle for suturing, 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 operation of removing the needle for suturing and the operation of releasing the suture are started simultaneously, and the operation of releasing the suture is completed before the operation of removing the needle for suturing.

[0127] Please refer to Figure 3The doctor manipulates the operating assembly 1 to generate a driving force, which is transmitted from the transmission assembly 4 to the actuator assembly 6 and the puncture tip 7, so that the actuator assembly 6 and the puncture tip 7 perform a suturing operation. The operating assembly 1 includes a gland 12 and a turntable 11 from top to bottom, the transmission assembly 4 includes a second transmission assembly 42, a first transmission assembly 41 and a third transmission assembly 43 arranged from inside to outside, and the actuator assembly 6 includes a positioning assembly 61, a suturing assembly 62, a receiving assembly 63 and a suturing needle fixing mechanism 64. Specifically, the turntable 11 is operated to rotate, and the rotation of the turntable 11 drives the first transmission assembly 41 to rotate, and the first transmission assembly 41 drives the positioning assembly 61 to rotate, and the positioning assembly 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 performed synchronously; the pressure cover 12 is operated to move, and the movement of the pressure cover 12 drives the second transmission assembly 42 and the third transmission assembly 43 to move, and the movement of the second transmission assembly 42 synchronously drives the suture assembly 62 to move and drives the puncture tip 7 to open, the suture assembly 62 moves to perform the needle removal suture action, and the puncture tip 7 opens to perform the suture line release action, so that the needle removal action and the suture line release action are performed synchronously; the needle receiving assembly 63 does not need to be driven, and the needle receiving assembly 63 performs the needle receiving action; the third transmission assembly 43 moves to drive the suture needle fixing mechanism 64 to move, and the suture needle fixing mechanism 64 moves to perform the needle fixing action; resetting refers to the resetting of the positioning assembly 61, the suture assembly 62 and the puncture tip 7. The positioning operation assembly includes a turntable 11, the suturing operation assembly, the suture release operation assembly or the suture needle fixing operation assembly all include a gland 12, and the positioning assembly includes a positioning execution assembly. The suturing assembly includes a suturing execution assembly, and the suturing execution assembly includes a suturing needle. The puncture tip can be called a suture release execution assembly. The first transmission assembly can also be called a positioning transmission assembly, the second transmission assembly can also be called a suturing transmission assembly, a suture release transmission assembly, and the third transmission assembly can also be called a suture needle fixing transmission assembly.

[0128] refer to Figure 4 , 6 The turntable 11 is an integrally formed part, which includes a cover 111 and a lever arm 112. The cover 111 is disposed above the contact plate 2 to protect the transmission assembly 4 above the central through hole 21. The cover 111 is disposed on the cover body 9. The outer end of the lever arm 112 is located outside the cover body 9, and the lever arm 112 passes through the circumferential through hole 92 of the cover body 9 and the cover 111 in sequence, and the inner end of the lever arm 112 is located inside the cover 111. Please refer to Figure 3 The circumferential through hole 92 has space for the lever arm 112 to move circumferentially. Figure 4, the outer end of the lever 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, and the first transmission assembly 41 includes the first transmission tube 411, two symmetrical transmission arms 412, and a swivel 413 from top to bottom. The first transmission tube 411 is a hollow tube extending axially, and 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 lever arm 112, and 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 axially, and the proximal ends of the transmission arms 412 are fixed to the outer side of the first transmission tube 411, and the distal ends of the transmission arms 412 are integrally formed with the swivel 413. The swivel 413 is located between the first support member 51 and the second support member 52, and the swivel 413 is drivably connected to the positioning assembly 61.

[0129] The positioning assembly 61 includes two symmetrically arranged positioning members (not numbered) with the same structure, wherein one positioning member 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. The first support member 51 and the second support member 52 both have accommodating holes 55 extending axially upward and axially downward. The protrusion 614 is accommodated in the corresponding accommodating holes 55 and can rotate in the accommodating holes 55, thereby realizing that one positioning member is pivotally connected to the first support member 51, and the other positioning member is pivotally connected to the second support member 52. For the sake of simplicity, only the positioning member pivotally connected to the first support member 51 is introduced below. The positioning member includes an auxiliary arm 611, a pivot shaft 612 and a positioning blade 613. The pivot shaft 612 extends axially, the auxiliary arm 611 is perpendicular to the pivot shaft 612, and the auxiliary arm 611 is drivably connected to the swivel 413, thereby realizing the rotation of the swivel 413 to drive the auxiliary arm 611 to rotate around the line connecting the upper and lower protruding parts 614 as the axis (i.e., the axis where the pivot shaft 612 is located), thereby realizing the rotation of the swivel 413 to drive the positioning member to rotate around the pivot shaft 612 as the axis. The drivably connected means that the rotation of the swivel 413 can drive the auxiliary arm 611 to rotate. Specifically, the swivel 413 is provided with a protruding part (also called an auxiliary body) (not shown) protruding upward, such as Figure 5As shown, the auxiliary arm 611 has a waist-shaped groove 6111, and the auxiliary body is accommodated in the waist-shaped groove 6111, and the auxiliary body can move in the waist-shaped groove 6111. When the rotating ring 413 rotates in the circumferential direction, the auxiliary body also rotates in the circumferential direction. The auxiliary body rotates in the circumferential direction to move in the waist-shaped groove 6111 and drive the waist-shaped groove 6111 to rotate with the pivot shaft 612 as the axis. The auxiliary arm 611 where the waist-shaped groove 6111 is located also rotates with the pivot shaft 612 as the axis, thereby causing the positioning blade 613 to rotate outward and inward with the pivot shaft 612 as the axis. The first support member 51 includes a clearance space 511, and the auxiliary arm 611 is located in the clearance space 511. One end of the auxiliary arm 611 is integrally formed with the proximal end of the pivot shaft 612. The pivot shaft 612 extends in the axial direction, and the positioning blade 613 is integrally formed at the distal end of the pivot shaft 612. When the positioning blade 613 is not rotated (i.e., in the closed state), the positioning blade 613 is flush with the outer surface of the rod wall tube 3 and the first support member 51; when the positioning blade 613 is rotated (i.e., in the open state), the positioning blade 613 protrudes from the outer surface 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 port, thereby realizing the positioning function, and at this time, the suturing assembly 62 is in a suturing position. Since the upper surface of the positioning blade 613 contacts the tissue forming surface, 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 with one axial direction of the puncture core assembly as the central axis, 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 contacts the tissue forming surface rather than point contact, so the positioning is relatively accurate.

[0130] 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.

[0131] 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.

[0132] Please refer to Figures 7 to 9The pressure cover 12 includes a pressing plate 121, a circumferential wall 123 and two symmetrical push pins 124. The pressing plate 121 is exposed on the cover body 9. The proximal end of the circumferential wall 123 and the proximal ends of the two push pins 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 the two notches 122 are formed after removing a part of the circumferential wall 123. The notch 122 includes two slits 122a extending axially. The two sides of the inner side of each slit 122a protrude radially inward to form two ribs. The above two ribs are called a group of ribs, and each group of ribs is defined as a rib group 1221. The two rib groups 1221 and the two push pins 124 are arranged alternately. The axial length of each push pin 124 is greater than the axial length of the circumferential wall 123, and the distal end of the push pin 124 protrudes radially inward to form a push pin plate 1241. When the cover 12 is not pressed and is in the first position, each rib plate group 1221 abuts against the adjustment block 422 of the second transmission assembly 42. When the cover 12 is pressed, the rib plate group 1221 presses down the adjustment block 422, so that the second transmission assembly 42 where the adjustment block 422 is located moves downward. Figures 11 to 13 As shown, the second transmission assembly 42 moves downward to drive the suturing assembly 62 to perform the needle-out action and the puncture tip 7 to perform the suture line release action. Fig.14 As shown, the cover 12 moves to the second position. The cover 12 is pressed continuously, and after the cover 12 moves a certain distance, the two push-foot plates 1241 abut against the upper transmission ring 431 of the third transmission assembly 43. The cover 12 is pressed continuously so that the push-foot plates 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. Figures 15 to 17 As shown, the third transmission assembly 43 moves downward to drive the suture needle fixing mechanism 64 to perform the needle fixing action, and after the needle fixing action is completed, the pressure cover 12 moves to the third position. The suture assembly, the puncture tip and the suture needle fixing mechanism share the pressure cover 12 for operation, which reduces the number of operating components and improves the convenience of operation.

[0133] Please refer to Figure 7 The second transmission assembly 42 includes an adjustment portion (not numbered), a transmission rod 424 and a rack 425. Fig.10The 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 configured so that a part of it can move radially between the inside and outside of the adjusting frame 421, and the middle part of the adjusting frame 421 is accommodated between the two push feet 124. When the pressure cover 12 is in the first position and the second position, and in 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 are partially exposed in 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 pressure cover 12 moves downward from the second position to the third position, the elastic member 423 contracts, the adjusting block 422 is accommodated in the adjusting frame 421, and the adjusting part is in the second state. The cylindrical portion extending downward from the adjustment frame 421 is fixedly connected to the proximal end 424a of the transmission rod 424, and 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, so that when the gland 12 is pulled, 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, and the second transmission assembly 42 moves upward to drive the suturing assembly 62 and the puncture tip 7 to perform a reset action. The transmission rod 424 extends downward in the axial direction, passes through the first transmission assembly 41 to form a distal end 424b, and the distal end 424b is connected to the rack 425. Teeth are arranged on both sides of the rack 425, and 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 arranged on both sides of the upper tooth section 425a, and the upper tooth section 425a transmits a driving force to the suturing assembly 62 to drive the suturing assembly 62 to perform a needle-out suturing action. Teeth are arranged on at least one side of the lower tooth section 425b, and the lower tooth section 425b transmits a driving force to the puncture tip 7 to drive the puncture tip 7 to perform a suture line release action.

[0134] Please refer to Fig.11The suturing assembly 62 includes suturing pieces 621 and 622 of the same structure. For simplicity of description, only the suturing piece 621 is introduced below. The suturing piece 621 includes a gear 623, a rotating shaft 624, a first suturing arm 625, a second suturing arm 626 and a suturing needle 627. The teeth on one side of the upper tooth segment 425a are meshed with the gear 623, and 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 suturing arm 625. The first suturing arm 625 is an arm with a yielding bend, which is used to yield to the rotating shaft of the suturing piece 622, so that the rotating shaft of the suturing piece 622 and the rotating shaft 624 of the suturing piece 621 are located in the same transverse plane. The other end of the first suturing arm 625 is fixed to one end of the second suturing arm 626. The second suturing arm 626 is a curved arm, and the other end of the second suturing arm 626 is detachably connected to the suturing needle 627; one end of the suture is tied to the suturing needle 627, and the other end of the suture is tied to the suturing needle of the suturing piece 622. When the rack 425 moves downward in the axial direction, the teeth on one side of the upper tooth segment 425a drive the gear 623 to rotate, and the rotation of the gear 623 drives the rotating shaft 624 to rotate along the first direction, and the rotating shaft 624 drives the first suturing arm 625, the second suturing arm 626 and the suturing needle 627 to rotate along the first direction. When the suturing needle 627 rotates in the first direction, it drives one end of the suture to rotate from the inside of the puncture core assembly to the outside of the puncture core assembly and pass through the human tissue on one side of the puncture port. The teeth on the other side of the upper rack 425a drive the suturing piece 622 to rotate in the second direction in the same way, so that the other end of the suture also rotates from the inside of the puncture core assembly to the outside of the puncture core assembly and passes through the human tissue on the other side of the puncture port. The first direction is opposite to the second direction.

[0135] Please refer to Fig.12, after the suture needle drives the end of the suture thread through the human tissue around the puncture hole, it is received by the receiving component 63. The receiving component 63 is arranged on the upper half 5' of the supporting component 5. The receiving component 63 includes two receiving members 631 and 632 with the same structure. In order to make the description concise, only the receiving member 631 is introduced below. The receiving member 631 includes a receiving portion 6311, a clamping portion 6312 located on both sides of the receiving portion 6311, and a receiving sheet 6313 located in the center of the receiving portion 6311. The receiving portion 6311 and the clamping portion 6312 are integrally formed, and the clamping portion 6312 has a bent shape. The supporting component 5 is provided with a receiving space matching the shape of the clamping portion 6312. The first supporting member 51 fixes the clamping portion 6312 on one side, and the second supporting member 52 fixes the clamping portion 6312 on the other side, so that the receiving portion 6311 is located above the accommodating space A, so that the receiving portion 6311 is located in the rotation path of the suture member 621. The first support member 51 is connected to the second support member 52 through two receiving members 631 and 632 with the same structure. The receiving sheet 6313 is arranged on the receiving part 6311. The receiving sheet 6313 is an elastic mesh sheet or an elastic hollow sheet with a hollow structure. The mesh of the elastic mesh sheet or the hollow structure of the elastic hollow sheet is used to clamp the suture needle 627. The rod wall tube 3 is provided with a window 31. The receiving sheet 6313 is located in 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 sheet 6313. The suture needle of the suture member 622 is synchronously clamped by the receiving sheet of the receiving member 632 in the same way, thereby realizing the reception of the suture needle. Fig.13 shown.

[0136] In the present invention, the puncture port is regarded as a hole, the part above the hole is outside the body, the part below the hole is inside the body, the part surrounding the hole is the body cavity wall tissue of the human body, the side of the puncture port refers to the side wall of the hole, and the human body tissue on both sides of the puncture port refers to the body cavity wall tissue of the human body around the hole. The present invention chooses to suture the puncture port from the inside to the outside, that is, the suture needle drives the suture thread to penetrate from the bottom layer (i.e., the fascia layer) of the tissue on both sides of the puncture port, and penetrates from the side of the puncture port, so that the fascia layer can be sutured better. Since in the puncture core assembly provided by the present invention, the two ends of the suture thread are respectively tied to the suture needles of the suture pieces 621 and 622, when using the above-mentioned suturing method, there will be a problem of how to send the part of the suture thread other than the two ends into the body cavity before the suture needle is removed. In order to make the description concise, the part of the suture thread other than the two ends is defined as the release part. In order to solve the above problems, the present invention allows the release part to follow the lower half of the puncture core assembly through the puncture port 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 port into the body cavity. After the release part follows the puncture tip 7 into the puncture port, when performing the suturing operation, the suture needs to be released so that the suture has a sufficient length. In the present invention, the action of releasing the suture is performed by the puncture tip 7.

[0137] Please refer to Fig.13 and 14, the puncture tip 7 is conical. The puncture tip 7 has a tip inner cavity inside, and the tip inner cavity accommodates the release part of the suture. When the puncture tip 7 is opened, the release part of the suture is unfolded under the puncture tip 7 to form a curved segment due to gravity and its own elasticity, thereby realizing the function of releasing the suture. In order 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 first wall shell 71 and the second wall shell 72 are closed to form a tip inner cavity. The first wall shell 71 and the second wall shell 72 can be mutually engaged so that the two are firmly closed. 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 so that the first wall shell 71 and the second wall shell 72 are engaged. The clamping connection can prevent the first wall shell 71 and the second wall shell 72 from being separated during puncture by the puncture tip, and the second transmission assembly 42 can axially move to release the clamping connection between the first wall shell 71 and the second wall shell 72 and separate the first wall shell 71 from the second wall shell 72. The first wall shell 71 and the second wall shell 72 are pivoted to separate from each other. The pivoting refers to the pivoting of the first wall shell 71 and / or the second wall shell 72 relative to the support assembly 5. In order to realize the pivoting of the first wall shell 71 relative to the support assembly 5, a toothed part 711 is arranged on the first wall shell 71, and the toothed part 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 part 721 is arranged on the second wall shell 72, and the toothed part 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. In order 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, which are selectively engaged with the teeth of the lower tooth segment 425b of the rack 425, so that the relative pivoting between the first wall shell 71 and the second wall shell 72 and the rotation of the suture members 621 and 622 can be synchronously driven by the rack 425. The relative pivoting includes the pivoting of both the first wall shell 71 and the second wall shell 72, and the pivoting of one of the first wall shell 71 and the second wall shell 72 while the other remains stationary. When only one of the first wall shell 71 and the second wall shell 72 is required to pivot, teeth can be provided on one side of the lower tooth segment 425b of the rack 425, and no teeth can be provided on the other side. To simplify the description, the following only introduces the situation where both the first wall shell 71 and the second wall shell 72 are pivoted: when the puncture tip 7 is in the initial state (ie, 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 segment 425a drive the gear 623 to rotate in the first direction, and the gear 623 rotates in the first direction to drive the rotating shaft 624, the first suturing arm 625, the second suturing arm 626 and the suturing needle 627 to rotate in the first direction, and the teeth on one side of the lower tooth segment 425b drive the toothed part 711 to rotate in the first direction, and the toothed part 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 segment 425a drive the suturing part 622 to rotate in the second direction, and the teeth on the other side of the lower tooth segment 425b drive the toothed part 721 to rotate in the second direction, and the toothed part 721 drives the second wall shell 72 to pivot in the second direction, thereby achieving the pivoting of the first wall shell 71 and the second wall shell 72, and the puncture tip 7 is opened, thereby releasing the suture thread, and the puncture tip 7 is in a terminal state. Since the present invention adopts suturing the puncture from the inside to the outside, the movement trajectory of the suturing needle of each suturing piece is: rotating from the inside of the puncture core assembly to the outside of the puncture core assembly, and passing through the human tissue on one side of the puncture hole. This movement trajectory requires each suturing piece to rotate 180 degrees, so the rack 425 needs to be moved down by a sufficient length so that the suturing pieces 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 downward moving length of the rack 425, when the first wall shell 71 and / or the second wall shell 72 pivot to the maximum angle, the rack 425 still needs to move downward, so that the toothed member 711 and the toothed member 721 no longer mesh with the lower tooth segment 425b. At this time, the puncture tip 7 needs to be kept in the terminal state to be driven by the lower tooth segment 425b to reset. In order to achieve the above purpose, one side surface of the toothed member 711 is formed with a first limiting protrusion 7111 along the lateral protrusion, and the inner surface of the first support member 51 or the second support member 52 has a first limiting protrusion 7111. The first limiting slot (not shown) in which the protrusion 7111 slides, the size of part of the first limiting slot is reduced so that it can be interference fit with the first limiting slot 7111, and the part of the first limiting slot corresponds to the position of the first limiting slot 7111 in the first limiting slot when the first wall shell 71 is pivoted to the maximum angle. When the first wall shell 71 is pivoted along the first direction, the first limiting slot 711 follows the toothed part 711 to rotate along the first direction. During the rotation process, the first limiting slot 711 enters the first limiting slot and slides in the first limiting slot. When the first wall shell 71 is pivoted to the maximum angle, the first limiting slot 711 1 is clamped in the first limiting groove, so that the toothed member 711 where the first limiting protrusion 711 is located maintains its position, and the toothed member 711 maintains its position so that the first wall shell 71 remains in an open state; and / or, one end surface of the toothed member 721 protrudes outward in the transverse direction 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, and the size of a part of the second limiting groove is reduced so that it can be interference-fitted with the second limiting protrusion, and the part of the second limiting groove corresponds to the second limiting protrusion when the second wall shell 72 is pivoted to the maximum angle. The position of the projection in the second limit slot, when the second wall shell 72 pivots in the second direction, the second limit projection follows the toothed member 711 to rotate in the second direction, during the rotation process, the second limit projection enters the second limit slot and slides in the second limit slot, when the second wall shell 72 pivots to the maximum angle, the second limit projection is clamped in the second limit slot, so that the toothed member 721 where the second limit projection is located maintains the position, the toothed member 721 maintains the position so that the second wall shell 72 remains in the open state, the first wall shell 71 and / or the second wall shell 72 remain in the open state, and the puncture tip 7 remains in the terminal state. When the suture pieces 621 and 622 rotate 180 degrees and the suture needle is received by the receiving assembly 63 and fixed by the suture needle fixing mechanism 64, the suture assembly 62 and the first wall shell 71 and / or the second wall shell 72 can perform a reset action.The pressing cover 12 is pulled upward, so that the pushing foot plate 1241 abuts against the proximal end 424a of the transmission rod 424, and the pushing foot plate 1241 pulls the transmission rod 424, so that the second transmission assembly 42 where the transmission rod 424 is located moves upward, thereby causing the rack 425 to move upward, and the teeth on one side of the upper tooth segment 425a of the rack 425 drive the gear 623 to rotate along the second direction, and the gear 623 rotates along the second direction to drive the rotating shaft 624, the first suturing arm 625, the second suturing arm 626 and the suturing needle 627 to rotate along the second direction. When the rack 425 moves upward for a distance, the teeth on one side of the lower tooth segment 425b encounter the toothed member 711 and mate with the toothed member 711. 1, thereby driving the toothed member 711 to rotate in the second direction, and the toothed member 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 segment 425a drive the suturing member 622 to rotate in the first direction, and the teeth on the other side of the lower tooth segment 425b drive the toothed member 721 to rotate in the first direction, and the toothed member 721 drives the second wall shell 72 to pivot in the first direction, so that the first wall shell 71 and the second wall shell 72 pivot toward each other until the first wall shell 71 and the second wall shell 72 are closed to form the puncture tip 7, at which time the puncture tip 7 returns to its initial state, so that the suturing assembly 62 and the first wall shell 71 and the second wall shell 72 synchronously perform the resetting action. It is worth noting 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 first wall shell 71 and the second wall shell 72 from unexpectedly separating under the reaction force of the human tissue on the puncture force concentration point during puncture. The suturing assembly 62 and the puncture tip 7 share a rack drive, which realizes the synchronous action of the two, satisfies the action logic relationship between the two, and saves the layout space of the puncture device.

[0138] Please refer to Figures 14-15The third transmission assembly 43 includes an upper transmission ring 431, two symmetrical connecting rods 432, a third transmission tube 433, a lower transmission ring 434 and two symmetrical boosting arms 435 from top to bottom. The upper transmission ring 431, the third transmission tube 433 and the lower transmission ring 434 are coaxial and have equal outer diameters. The upper transmission ring 431 is fixed to the proximal end of the connecting rod 432. The arm 112 passes through between the two connecting rods 432 and is engaged with the first transmission tube 411. The distal end of the connecting rod 432 is 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 end of the boosting arm 435. The boost arm 435 is located between the first support member 51 and the second support member 52, so that the rotation of the boost arm 435 in the third transmission assembly 43 is blocked by the first support member 51 and the second support member 52, thereby preventing the rotation of the third transmission assembly 43. Further, the outer surface of the first limiting portion 56 and / or the second limiting portion 57 has a convex point (not shown), and the inner wall of the lower transmission ring 434 has a concave point (not shown), and the convex point is accommodated in the concave point, thereby preventing the lower transmission ring 434 from moving downward in the axial direction due to gravity, and further making the third transmission assembly 43 where the lower transmission ring 434 is located remain motionless when not pressed down by the pressure cover 12.

[0139] When the pressure cover 12 is pressed and moves downward from the second position to the third position, the push plate 1241 of the pressure cover 12 abuts against the upper transmission ring 431 and pushes the third transmission assembly 43 to move downward, so that the lower transmission ring 434 overcomes the resistance of the convex point and moves. The lower transmission ring 434 moves downward so that the booster arm 435 moves axially downward between the first support member 51 and the second support member 52, thereby driving the suture needle fixing mechanism 64 to perform the needle fixing action. The end surface where the accommodating hole 55 is located is the upper end surface of the first support member 51 and the second support member 52.

[0140] It should be noted that, since the gland 12 needs to move downward by a sufficient displacement to make each suture piece rotate 180 degrees, that is, the suture needle can only be fixed after it is received by the receiving assembly 63. The above-mentioned sufficient displacement is defined as h. When the gland 12 is located at 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, so that when the gland 12 is pressed and moved downward from the first position, each suture piece rotates, and the third transmission assembly 43 remains fixed until the gland 12 moves downward by a displacement of h, each suture piece 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-foot plate 1241 needs to move downward for a certain idle stroke before it can abut against the upper transmission ring 434, thereby driving the suture needle fixing mechanism 64 to perform the needle fixing action.

[0141] Please refer to Fig.13 and Fig.15 The suture needle fixing mechanism 64 is arranged above the needle receiving assembly 63. The suture needle fixing mechanism 64 includes two symmetrical movable members 641 and 642. The movable member 641 is located above the receiving member 631 in the axial direction, and the movable member 642 is located above the receiving member 632 in the axial direction. For the sake of simplicity, only the movable member 641 is introduced below. The proximal end of the movable member 641 is fixed to the outside of the booster arm 435, and 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 clamp the suture needle 627 clamped on the receiving piece 6313. When the pressure cover 12 is in the second position, the pressure cover 12 is pressed, and the pressure cover 12 moves downward, driving the third transmission assembly 43 to move downward, and the third transmission assembly 43 drives the movable member 641 to move downward. The movable member 641 moves downward so that the suture needle 627 and the limiting slit 641a enter the limiting slit 641a roughly vertically until the suture needle 627 is stuck in the proximal end of the limiting slit 641a. The suture needle 627 prevents the proximal end of the limiting slit 641a from moving further downward, so that the movable member 641 and the third transmission assembly 43 cannot move further downward, and thus the pressure cover 12 cannot move further downward. At this time, the pressure cover 12 is in the third position. Fig.17At 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 is formed by the clamping portion 6312 extending outward from the receiving portion 6311. When the pressure cover 12 is located at the third position, the pressure cover 12 is lifted, and the push plate 1241 moves upward to abut against the proximal end 424a of the transmission rod 424. The distance that the push plate 1241 moves upward to abut against the proximal end 424a of the transmission rod 424 is equal to the distance that the pressure cover 12 moves from the third position to the second position. The push plate 1241 pulls the transmission rod 424 and then pulls the second transmission assembly 42 upward as a whole, and the second transmission assembly 42 drives the suturing assembly 62 to perform reset. When the suturing assembly 62 is reset, the rack 425 moves upward along the axis, and 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 along the second direction. The rotating shaft 624 drives the first suturing arm 625 and the second suturing arm 626 to rotate along the second direction. When the second suturing arm 626 rotates, it is intended to drive the suturing needle 627 to move, but the movement of the suturing needle 627 is blocked by the receiving piece 6313 and the movable member 641. In this process, the suturing needle 627 gives the receiving piece 6313 a force. 313 and the reaction force of 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 keeps holding the suture needle 627, so the suture needle 627 is held and separated from the second suture arm 626. After separation, the first suture arm 625 and the second suture arm 626 rotate from the outside of the puncture core assembly back to the accommodating space A, and the suture needle 627 continues to be held in the receiving member 631, thereby achieving the fixation of the suture needle 627. Since one end of the suture thread is tied to the suture needle 627, the end of the suture thread is also fixed in the receiving member 631 and the movable member 641. After the puncture core assembly is pulled out of the body, the 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 piece 622 is fixed by the movable piece 642, so that the other end of the suture thread is also fixed in the receiving piece 632 and the movable piece 641, and can also be taken out of the body by the puncture core assembly. The movable piece 641 can keep the suture needle fixed. The movable piece 641 can cooperate with the blocking arm 6314.

[0142] In the present invention, the suture assembly 62 performs the needle-out action, the puncture tip 7 performs the suture-releasing action, and the suture needle fixing mechanism 64 performs the needle-fixing action to avoid being mistakenly executed, and the avoidance of mistaken execution is achieved by avoiding being mistakenly driven. The needle-out action and the suture-releasing action are prevented from being mistakenly driven by preventing the pressing cover 12 from being mistakenly pressed when the rotating disk 11 is in the first position, and the needle-fixing action is prevented from being mistakenly driven by preventing the pressing cover 12 from being mistakenly pressed when the rotating disk 11 is in the second position.

[0143] The turntable 11 prevents the cover 12 from being pressed by mistake when it is in the first position: Please continue to refer to Figure 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.

[0144] The turntable 11 prevents the pressing cover 12 from being pressed by mistake when it is in the second position: Please continue to refer to Fig.14 and Fig.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. Fig.14As shown, when the pressure cover 12 is in the second position, the first guide bevel 113a abuts against the second guide bevel 422a, and the first guide bevel 113a prevents the adjustment block 422 from moving downward, and the adjustment block 422 further prevents the rib plate group 1221 from moving downward. The rib plate group 1221 is prevented from moving downward, so that the pressure cover 12 is prevented from being pressed by mistake when in the second position, thereby preventing the needle fixing action from being driven by mistake. Increasing the pressing force on the pressure cover 12 increases the pressure of the rib plate group 1221 on the adjustment block 422. The increase in the pressure of the rib plate group 1221 on the adjustment block 422 increases the pressure of the second guide bevel 422a on the first guide bevel 113a. The increase in the pressure of the second guide bevel 422a on the first guide bevel 113a increases the reaction force of the first guide bevel 113a on the second guide bevel 422a. The reaction force is decomposed by the second guide bevel 422a into radial force and axial force. The radial force moves radially inward to make the two adjustment blocks 422 approach each other, thereby causing the elastic member 423 to contract. The two adjustment blocks 422 approach each other, causing the adjustment blocks 422 to move from being partially exposed in the adjustment frame 421 to being completely contained in the adjustment frame 421. The first guide slope 113a and the second guide slope 422a no longer abut against each other, and the adjustment portion changes from the first state to the second state. In the second state, the radial length of the adjustment portion is reduced, and the adjustment block 422 no longer hinders the rib plate group 1221 from moving downward. The preset inclination angles of the first guide slope 113a and the second guide slope 422a can enable the adjustment block 422 to overcome the pressure applied to it by the rib plate group 1221 and move. Continue to press the pressure cover 12. Since the radial length of the adjustment frame 421 is less than the radial distance between the two blocking sheets 113, the adjustment frame 421 is contained between the two blocking sheets 113. At this time, the two adjustment blocks 422 are subjected to the elastic force of the elastic member 423 and are respectively abutted against the inner surface of one of the two blocking sheets 113, so that the adjustment frame 421 is fixed between the two blocking sheets 113. Since the adjustment blocks no longer hinder the downward movement of the rib plate group 1221, when the pressure cover 12 continues to move downward, the blocking sheet 113 enters the slit 122a and causes the blocking sheet 113 to move relatively in the slit 122a. In this process, the pressure cover 12 does not contact the adjustment part, so that the second transmission assembly 42 where the adjustment part is located is not subject to the driving force and remains fixed. At the same time, the push foot plate 1241 of the pressure cover 12 moves downward for an idle stroke and touches the upper transmission ring 431, thereby pushing 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 suture needle fixing mechanism 64 to perform the needle fixing action. After the needle fixing action is completed, the pressure cover 12 is located at the third position. Fig.15 shown.

[0145] Preferably, in order to prevent the elastic member 423 from completely ejecting the adjusting block 422 from the adjusting frame 421 when the adjusting block 422 is stationary or moving, and to prevent the adjusting block 422 and the adjusting frame 421 from rubbing against each other and causing severe shaking during the movement of the adjusting block 422, as shown in FIG. Fig.10 and Fig.16 As shown, the side of the adjustment block 422 protrudes outward to form a guide protrusion 4221, and the adjustment frame 421 is provided with a guide groove 4212 for the radial movement of the guide protrusion 4221. When the adjustment block 422 is stationary, the guide protrusion 4221 is located in the guide groove 4212, and the guide groove 4212 can limit the adjustment block 422 to prevent the adjustment block 422 from being completely ejected from the adjustment frame 421; when the adjustment block 422 moves, the guide protrusion 4221 moves in the guide groove 4212, and the guide groove 4212 can reduce the shaking amplitude of the adjustment block 422 when it moves. In order to further enhance the stability of the movement of the adjustment block 422, an anti-shake convex strip 4222 is provided on the surface of the adjustment block 422, and the anti-shake convex strip 4222 reduces the contact area between the adjustment block 422 and the adjustment frame 421, thereby reducing the friction between the two.

[0146] In summary, please refer to Figures 2 to 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 section 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 suture needle fixing mechanism 64 remain stationary.After the pressure cover 12 is lifted to the first position, the push arm 112 is pushed along the second circumferential direction. The push arm 112 rotates along the second circumferential direction to drive the first transmission assembly 41 to rotate along the second circumferential direction. The first transmission assembly 41 drives the positioning blade to pivot inward, and the positioning blade changes from an open state to a closed state, thereby realizing the resetting of the positioning assembly 61. Fig.18 Then, the entire puncture device is pulled upward, and the two ends of the suture are brought out of the puncture port by the puncture core assembly, the suture is cut to separate each end of the suture from the rest of the suture, and the suture is pulled out of the puncture port to tighten the puncture port, and the suture is knotted to complete the suturing operation.

[0147] The "sutureable position" mentioned in the present invention means that when the puncture core assembly is located at this position, the suturing assembly 62 is driven, and the suturing needle of the suturing assembly 62 can be rotated to penetrate the tissue around the puncture port, pass out from the side of the puncture port and enter the needle receiving assembly 63.

[0148] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A suturing mechanism for a puncture core assembly, characterized in that: The suturing mechanism comprises two suturing members, each of which comprises a suturing arm and a suturing needle, the suturing needle is detachably connected to the suturing arm, and the end of the suture thread is fixed to the suturing needle; the two suturing members are used to be driven to rotate to achieve needle-out suturing; the suturing mechanism also comprises a suturing operation assembly, a suturing transmission assembly and a suturing needle fixing mechanism; the suturing operation assembly comprises a pressure cover, and the pressure cover is connected to the suturing transmission assembly; the suturing needle fixing mechanism comprises a movable member and a suturing needle fixing transmission assembly, and the movable member comprises a slit extending from the end of the movable member, and the slit is used to clamp the suturing needle; The pressure cover is pressed to move the suturing drive assembly downward to drive the two suturing members to rotate to achieve needle suturing; In response to continuing to press the gland to move the suture needle fixing transmission assembly downward, the suture needle fixing transmission assembly drives the movable member to move downward, so that the slit of the movable member clamps the suture needle; The pressing cover is pulled to move the suture transmission assembly upward to drive the two suture members to rotate for resetting.

2. The suturing mechanism for the puncture core assembly according to claim 1, characterized in that: Each of the suturing members further comprises a gear; the suturing transmission assembly comprises a rack, and the gear is meshed with the rack.

3. The suturing mechanism for the puncture core assembly according to claim 2, characterized in that: The suturing operation component drives the suturing transmission component to move linearly.

4. The suturing mechanism for the puncture core assembly according to claim 2, characterized in that: The puncture core assembly further comprises a suture release mechanism, and the suture release mechanism comprises a suture release transmission assembly; the suture transmission assembly and the suture release transmission assembly both comprise a rack, and the rack is the same.

5. The suturing mechanism for the puncture core assembly according to claim 3, characterized in that: The puncture core assembly also includes a suture releasing mechanism, the suture needle fixing mechanism includes a suture needle fixing operating assembly, the suture releasing mechanism includes a suture releasing operating assembly, and the suture needle fixing operating assembly, the suture operating assembly, and the suture releasing operating assembly are the same operating assembly.

6. The suturing mechanism for the puncture core assembly according to claim 1, characterized in that: The pressing cover includes a pressing plate, a circumferential wall, a pushing foot plate and a rib plate, wherein the pushing foot plate and the rib plate are both connected to the circumferential wall, and the pressing plate is used to be operated to press or lift the pressing cover, and when the pressing cover is pressed, the rib plate presses down the sewing transmission assembly to move the sewing transmission assembly downward, and when the pressing cover is lifted, the pushing foot plate abuts against the sewing transmission assembly and pulls the sewing transmission assembly upward.

7. A puncture core assembly, comprising a suturing mechanism, characterized in that: The suturing mechanism is a suturing mechanism for a puncture core assembly according to any one of claims 1 to 6.

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