Electromagnetic drive blood vessel stitching instrument

Abstract

The invention belongs to the field of medical instruments, and discloses an electromagnetic drive blood vessel stitching instrument which comprises a guide rod, and one end of the guide rod is rotationally sleeved with a shell sleeve; the end, away from the shell sleeve, of the guide rod is connected with a first disc and a second disc which are coaxial with the guide rod. The first disc is located at the end, close to the shell sleeve, of the second disc. Needle cylinders are fixed on the first disc and the second disc, the two needle cylinders are coaxially arranged, the central axes of the needle cylinders are parallel to the central axis of the guide rod, a fixed offset distance is kept between the central axes of the needle cylinders and the central axis of the guide rod, the ends, close to each other, of the two needle cylinders are open, a suture needle coaxially arranged with the guide rod is arranged between the two needle cylinders, and the two axial ends of the suture needle are conical; through the arrangement of the guide rod, the first disc, the second disc and the electromagnetic driving mechanism and the cooperation of the design that the two axial ends of the suture needle are conical, a circular or oval blood vessel wound can be sutured conveniently, so that the purpose of rapidly and accurately suturing the blood vessel wall wound is achieved, and the suturing work efficiency is effectively improved.

Description

Technical Field

[0001] The present invention belongs to the field of medical devices, and particularly relates to an electromagnetic-driven vascular suture device. Background Art

[0002] Vascular suture is a key technique in surgical operations and is widely used in fields such as cardiovascular surgery, trauma repair, and organ transplantation. In clinical practice, many surgical operations (such as vascular puncture, arteriotomy, or vascular anastomosis) often form circular or oval wounds on the blood vessel wall; when dealing with such wounds of regular shapes, the traditional manual suture method has problems of cumbersome operation and low suture efficiency. The surgeon usually needs to repeatedly puncture the blood vessel wall and manually adjust the suture tension, which not only prolongs the operation time, but also the manual suture operation often causes the puncture opening to expand, affecting the sealing of the suture and increasing the risk of blood vessel leakage; especially in the case of a thin or fragile blood vessel wall, repeated punctures are likely to damage the blood vessel and even cause tearing, thus affecting the suture effect; therefore, there is a problem in the prior art that it is not convenient to suture circular or oval vascular wounds. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide an electromagnetic-driven vascular suture device, which solves the problem in the prior art that it is not convenient to suture circular or oval vascular wounds.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] An electromagnetic-driven vascular suture device includes a guide rod, and one end of the guide rod is rotatably sleeved with a housing sleeve;

[0006] The end of the guide rod far from the housing sleeve is connected with a first disc and a second disc which are coaxially placed with the guide rod, and the first disc is located at one end of the second disc close to the housing sleeve;

[0007] Needle cylinders are fixed on both the first disc and the second disc, the two needle cylinders are coaxially placed, the central axis of the needle cylinder is parallel to the central axis of the guide rod and maintains a fixed offset distance, both ends of the two needle cylinders close to each other are open, a suture needle coaxially placed with the guide rod is arranged between the two needle cylinders, both axial ends of the suture needle are conical, and the suture needle contains ferromagnetic material;

[0008] A wire groove for placing a suture is opened in the guide rod, one end of the wire groove passes through the peripheral wall of the guide rod between the first disc and the second disc, and one end of the suture passes through the wire groove and is fixed to the middle section of the suture needle;

[0009] An electromagnetic driving mechanism is arranged on the housing sleeve, the electromagnetic driving mechanism includes an electromagnetic part and a control circuit connected to the electromagnetic part, the electromagnetic part is used to generate a magnetic field after being energized, the control circuit is used to switch the direction of the current input to the electromagnetic part, and the electromagnetic driving mechanism is used to drive the suture needle to move axially along the guide rod;

[0010] A locking part for locking the suture needle is provided inside the syringe barrel;

[0011] The second disc is fixedly sleeved on the peripheral wall of the guide rod, the first disc is slidably sleeved on the guide rod, and an adjusting part for connecting the first disc is provided on the housing sleeve. The adjusting part is used to drive the first disc to move along the axial direction of the guide rod;

[0012] The adjusting part includes a first card slot opened on the peripheral wall of the guide rod. The first card slot is arranged along the axial direction of the guide rod, and a first slider slidably connected in the first card slot is fixed on the inner side wall of the first disc;

[0013] The adjusting part further includes a pair of symmetrically placed turntables. The central axes of the two turntables are both vertically placed with respect to the central axis of the guide rod. The turntables are both located between the inner wall of the housing sleeve and the peripheral wall of the guide rod, and the turntables are both rotatably connected to the housing sleeve. The two turntables are respectively located on both sides of the guide rod. A connecting rod is provided between each turntable and the guide rod. The connecting rods are both placed coaxially with the guide rod. An annular card slot placed coaxially is opened at the end of the first disc close to the housing sleeve. One end of the connecting rod slides through the housing sleeve and is slidably connected in the annular card slot. The connecting rods can all slide along their own axial directions. A pin shaft facing the corresponding side connecting rod is fixed on each turntable. The pin shaft is placed coaxially with the turntable and is close to the peripheral side edge of the turntable. A pin slot is opened on the peripheral wall of each connecting rod. The central axis of the pin slot is vertically placed with respect to the central axis of the connecting rod. The end of the pin shaft away from the turntable is slidably connected in the pin slot. A pair of symmetrically placed first knobs are rotatably connected to the outer side wall of the housing sleeve. The two first knobs are respectively fixed to the two turntables;

[0014] A pair of symmetrically placed first limit discs are fixedly sleeved on the guide rod. The radius of the first limit disc is smaller than the distance between the syringe barrel and the central axis of the guide rod. The two first limit discs are respectively located on both sides of the first disc;

[0015] The electromagnetic driving mechanism includes an annular electromagnet sleeved on the outer side of the housing sleeve, and the annular electromagnet is placed coaxially with the guide rod;

[0016] The electromagnetic driving mechanism further includes a plurality of second card slots opened on the peripheral wall of the housing sleeve. The second card slots are all placed coaxially with the guide rod. A sliding sleeve placed coaxially is provided on the outer side of the guide rod. A second slider is slidably connected in each second card slot. One end of each second slider is fixed to the sliding sleeve, and the other end of each second slider is fixed to the annular electromagnet. A sliding strip placed coaxially with the guide rod is fixed on the inner wall of the sliding sleeve. A stopper adapted to the sliding strip is fixedly installed on the outer side wall of the guide rod. The stopper is used to clamp or release the sliding strip;

[0017] A pair of symmetrically placed second limit discs are fixed on the guide rod. The sliding strip is located between the two second limit discs;

[0018] A second knob is rotatably connected to the end of the housing sleeve away from the second disc. The second knob and the guide rod are coaxially arranged, and one end of the guide rod is fixed to the second knob.

[0019] A guide tube made of an elastic material is fixed to the end of the guide rod close to the second disc. Both ends of the guide tube are open.

[0020] Advantages of the present invention:

[0021] 1. In this application, through the arrangement of the guide rod, the first disc, the second disc and the electromagnetic drive mechanism, and in cooperation with the design that both ends of the suture needle in the axial direction are conical, and by controlling the reciprocating switching of the magnetic field direction of the control circuit, it is convenient to drive the suture needle to puncture the blood vessel wall, so that the suture needle drives the suture thread to shuttle back and forth on both sides inside and outside the blood vessel wall; at the same time, through the rotation adjustment function of the guide rod, the suture needle can move flexibly along the circumference of the blood vessel wound, so as to facilitate the suture operation on circular or oval blood vessel wounds, thus achieving the purpose of quickly and accurately suturing the wound on the blood vessel wall, effectively improving the suture work efficiency.

[0022] Moreover, through the cooperative setting of the syringe barrel and the locking part, when the magnetic field direction is switched, the suture needle can be effectively retracted into the syringe barrel and clamped and limited, avoiding the accidental sliding out of the suture needle from the syringe barrel during the switching of the magnetic field, preventing problems such as the suture needle scratching the blood vessel, and effectively improving the stability and safety during the suture puncture process.

[0023] 2. Through the setting of the adjusting part of this application, without interfering with the synchronous rotation of the first disc and the second disc along with the guide rod, it is convenient to control the distance between the first disc and the second disc, so that the suture device of this application can be applicable to blood vessel walls of different thicknesses, and at the same time can also be applicable to various suture needles of different length specifications, improving the adaptability of the suture device.

[0024] 3. Through the cooperative setting of the annular electromagnet, the second card slot, the sliding sleeve, the second slider, the sliding bar and the stopper, it is convenient to move and adjust the annular electromagnet along the axis of the guide rod, convenient to control and adjust the driving force of the electromagnetic drive mechanism on the suture needle, and further effectively control the puncture depth during the suture process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a partial structure schematic diagram of the adjusting part of the present invention.

[0028] Figure 3 is the partial enlarged structural schematic diagram of part A in the present invention; Figure 2 in the figure;

[0029] Figure 4 is the partial structural schematic diagram of the first disc and the second disc of the present invention;

[0030] Figure 5 is the partial structural sectional schematic diagram of the toroidal electromagnet of the present invention;

[0031] Figure 6 is the partial structural schematic diagram of the slide bar of the present invention;

[0032] Figure 7 is the internal structural schematic diagram of the syringe in the second embodiment of the present invention;

[0033] Figure 8 is the attachment of the present invention; Figure 7 the partial enlarged structural schematic diagram of part B in the figure;

[0034] Figure 9 is the self-locking track structural schematic diagram of the present invention;

[0035] Figure 10 is the suture needle structural schematic diagram of the present invention;

[0036] Figure 11 is the suture process schematic diagram of the present invention.

[0037] In the figure, 100, guide rod; 101, wire groove; 102, guiding channel; 103, indicating pipe; 104, second knob;

[0038] 200, housing sleeve;

[0039] 300, first disc;

[0040] 400, second disc;

[0041] 500, syringe; 501, gear; 502, self-locking slider; 503, sliding seat; 504, self-locking track; 505, hinged rod; 506, locking piece; 507, return spring; 508, flow guiding member;

[0042] 600, suture needle; 601, connecting groove; 602, tooth groove;

[0043] 700, electromagnetic part; 701, toroidal electromagnet; 702, second card slot; 703, sliding sleeve; 704, second slider; 705, slide bar; 706, limiter; 707, second limiting disc;

[0044] 800, Adjusting part; 801, First card slot; 802, First slider; 803, Turntable; 804, Connecting rod; 805, Ring card slot; 806, Pin shaft; 807, Pin slot; 808, First knob; 809, First limiting disc; 810, Annular track; 811, Roller;

[0045] 900, Guide tube. Detailed implementation manner

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0047] As Figures 1 to 11 shown, an electromagnetic drive vascular suture device includes a guide rod 100, and one end of the guide rod 100 is rotatably sleeved with a housing sleeve 200;

[0048] The end of the guide rod 100 away from the housing sleeve 200 is connected with a first disc 300 and a second disc 400 that are coaxially placed with the guide rod 100, and the first disc 300 is located at one end of the second disc 400 close to the housing sleeve 200;

[0049] Needle cylinders 500 are fixed on both the first disc 300 and the second disc 400. The two needle cylinders 500 are coaxially placed. The central axis of the needle cylinder 500 is parallel to the central axis of the guide rod 100 and maintains a fixed offset distance. The mutually close ends of the two needle cylinders 500 are both open. A suture needle 600 that is coaxially placed with the guide rod 100 is provided between the two needle cylinders 500. Both axial ends of the suture needle 600 are conical, and the suture needle 600 contains ferromagnetic material;

[0050] A wire groove 101 for placing a suture is opened in the guide rod 100. One end of the wire groove 101 passes through the peripheral wall of the guide rod 100 between the first disc 300 and the second disc 400. One end of the suture passes through the wire groove 101 and is fixed to the middle section of the suture needle 600;

[0051] An electromagnetic drive mechanism is provided on the housing sleeve 200. The electromagnetic drive mechanism includes an electromagnetic part 700 and a control circuit connected to the electromagnetic part 700. The electromagnetic part 700 is used to generate a magnetic field after being energized, and the control circuit is used to switch the current direction input to the electromagnetic part 700. The electromagnetic drive mechanism is used to drive the suture needle 600 to move axially along the guide rod 100;

[0052] Locking parts for locking the suture needle 600 are provided in both needle cylinders 500;

[0053] Preferably, a tension controller is provided in the wire groove 101. One end of the suture away from the suture needle 600 is fixed in the wire groove, and the suture passes through the tension controller, which is used to control the tension of the suture during the suturing process.

[0054] This application is applicable to dealing with vascular injuries in the shape of circles, ellipses, etc.

[0055] During use, one end of the suture is placed in the wire groove, the other end of the suture passes through the wire groove 101 and is fixed to the middle section of the suture needle 600, and the suture needle 600 is retracted and locked in the corresponding syringe 500 of the second disc 400; then hold the shell 200 by hand, pass the second disc 400 through the wound and into the inner side of the blood vessel, so that the first disc 300 and the second disc 400 are respectively located on both sides of the inner side of the blood vessel wall at the wound.

[0056] It should be noted that when the wound area is small, the edge contour of the wound is small, and the contour passed by the rotation of the suture needle 600 driven by the rotating guide rod 100 can completely cover the wound, during the suturing of such wounds, hold the shell 200 by hand and rotate the rotating guide rod 100 to perform the suturing work; when the wound area is large and the contour passed by the rotation of the suture needle 600 driven by the rotating guide rod 100 cannot cover the wound, during the suturing of such wounds, the guide rod 100 needs to be moved along the edge contour of the wound and cooperate with the rotation of the guide rod 100 to drive the suture needle 600 to suture along the wound contour; and because the blood vessel wall has a certain flexibility, even if the wound area is smaller than the second disc 400, the second disc 400 can still pass through the wound.

[0057] For the convenience of description, the magnetic field generated by the electromagnetic part 700 for driving the suture needle 600 to move from the first disc 300 to the second disc 400 is defined as the first magnetic field, and the magnetic field generated by the electromagnetic part 700 for driving the suture needle 600 to move from the second disc 400 to the first disc 300 is defined as the second magnetic field.

[0058] After the second disc 400 is inserted into the inner side of the blood vessel, taking the suturing process where the wound area is small and the rotation trajectory of the suture needle 600 can cover the wound contour by simply rotating the guide rod 100 as an example, the specific suturing steps are as follows:

[0059] Step 1: The control circuit energizes the electromagnetic part 700.

[0060] Step 2: Control the direction of the current input to the electromagnetic part 700 through the control circuit, so that the electromagnetic part 700 generates the second magnetic field.

[0061] Step 3: The locking part in the syringe 500 corresponding to the second disc 400 releases the locking of the suture needle 600. Under the action of the second magnetic field, the suture needle 600 moves towards the first disc 300 end. During the movement, the suture needle 600 pierces the blood vessel wall, and the end of the suture extends into the outer side of the blood vessel along with the suture needle 600.

[0062] Step Four: When the suture needle 600 enters the syringe barrel 500 corresponding to the first disc 300, activate the locking part in the syringe barrel 500 corresponding to the first disc 300, and lock the suture needle 600 through the locking part;

[0063] Step Five: Rotate the guide rod 100, and the guide rod 100 drives the first disc 300, the second disc 400, the syringe barrel 500 and the suture needle 600 to rotate around the axis of the guide rod 100 to adjust the position of the syringe barrel 500;

[0064] Step Six: After the position of the syringe barrel 500 is adjusted, switch the current direction of the input electromagnetic part 700 through the control circuit to make the electromagnetic part 700 generate a first magnetic field;

[0065] Step Seven: The locking part in the syringe barrel 500 corresponding to the first disc 300 releases the lock on the suture needle 600. Under the action of the first magnetic field, the suture needle 600 moves towards the second disc 400. During the movement, the suture needle 600 pierces the blood vessel wall, and the end of the suture passes through to the inside of the blood vessel along with the suture needle 600;

[0066] Step Eight: When the suture needle 600 enters the syringe barrel 500 corresponding to the second disc 400, activate the locking part in the syringe barrel 500 corresponding to the second disc 400, and lock the suture needle 600 through the locking part;

[0067] Step Nine: Rotate the guide rod 100, and the guide rod 100 drives the first disc 300, the second disc 400, the syringe barrel 500 and the suture needle 600 to rotate around the axis of the guide rod 100 to adjust the position of the syringe barrel 500;

[0068] Step Ten: Repeat Steps Two to Nine to make the suture needle 600 suture around the wound edge for one week;

[0069] After suturing around the wound edge for one week, the suture needle 600 is retracted into the syringe barrel 500 corresponding to the first disc 300 or the second disc 400, and the suture needle 600 is locked through the locking part. Then, pull the guide rod 100 to move the second disc 400 out of the inside of the blood vessel; at this time, the suture extending into the first disc 300 and the second disc 400 can be cut, and the connection between the suture and the suture needle 600 can be cut. Subsequently, the medical staff tightens the two thread ends to pull the wound to contract and close;

[0070] In this application, through the arrangement of the guide rod 100, the first disc 300, the second disc 400 and the electromagnetic drive mechanism, and in cooperation with the design that both axial ends of the suture needle 600 are conical, and by controlling the circuit to reciprocally switch the direction of the magnetic field, it is thus convenient to drive the suture needle 600 to puncture the blood vessel wall, so that the suture needle 600 drives the suture to shuttle back and forth on both the inner and outer sides of the blood vessel wall; at the same time, through the rotation adjustment function of the guide rod 100, the suture needle 600 can move flexibly along the circumference of the blood vessel wound, thereby achieving the purpose of facilitating the rapid and precise suture of the blood vessel wall wound, effectively improving the suture work efficiency;

[0071] Moreover, through the cooperative setting of the syringe barrel 500 and the locking part, when the direction of the magnetic field is switched, the suture needle 600 can be effectively contracted into the syringe barrel 500 and clamped and limited, avoiding the accidental sliding out of the suture needle 600 from the syringe barrel 500 during the switching of the magnetic field, and preventing problems such as scratches on the blood vessel caused by the suture needle 600, effectively improving the stability and safety during the suture puncture process;

[0072] Preferably, the ferromagnetic material in the suture needle 600 is made of one or several materials among iron, nickel, and cobalt;

[0073] Preferably, hydrophilic lubricating coatings are coated on the surfaces at both ends of the suture needle 600, which are used to reduce the friction during the puncture process and reduce the damage to the blood vessel wall;

[0074] Preferably, a connecting groove 601 for connecting the suture is provided in the middle section of the suture needle 600, so as to facilitate tying and fixing the suture to the middle section of the suture needle 600.

[0075] The second disc 400 is fixedly sleeved on the peripheral wall of the guide rod 100, the first disc 300 is slidably sleeved on the guide rod 100, and an adjusting part 800 for connecting the first disc 300 is provided on the housing sleeve 200, and the adjusting part 800 is used to drive the first disc 300 to move along the axial direction of the guide rod 100;

[0076] Through the setting of the adjusting part 800, controlling and adjusting the distance between the first disc 300 and the second disc 400 can not only be applicable to blood vessel walls of different thicknesses, but also be applicable to various suture needles 600 of different length specifications, improving the adaptability.

[0077] The adjusting part 800 includes a first card slot 801 opened on the peripheral wall of the guide rod 100, the first card slot 801 is arranged along the axial direction of the guide rod 100, and a first slider 802 slidably connected in the first card slot 801 is fixed on the inner side wall of the first disc 300; on the premise of ensuring no interference with the axial movement of the first disc 300 along the guide rod 100, it can also ensure that the first disc 300 can rotate synchronously with the guide rod 100.

[0078] The adjusting part 800 further includes a pair of symmetrically placed turntables 803. The central axes of the two turntables 803 are both perpendicular to the central axis of the guide rod 100. The turntables 803 are both located between the inner wall of the housing sleeve 200 and the peripheral wall of the guide rod 100, and the turntables 803 are both rotatably connected to the housing sleeve 200. The two turntables 803 are respectively located on both sides of the guide rod 100. Connecting rods 804 are provided between the turntables 803 and the guide rod 100. The connecting rods 804 are both arranged coaxially with the guide rod 100. A circular ring slot 805 placed coaxially is opened at the end of the first disc 300 close to the housing sleeve 200. One end of the connecting rod 804 slides through the housing sleeve 200 and is slidably connected in the circular ring slot 805. The connecting rods 804 can all slide along their own axial directions. Pins 806 facing the corresponding side connecting rods 804 are fixed on the turntables 803. The pins 806 are arranged coaxially with the turntables 803, and the pins 806 are close to the peripheral side edge of the turntables 803. Pin slots 807 are opened on the peripheral walls of the connecting rods 804. The central axes of the pin slots 807 are both perpendicular to the central axis of the connecting rods 804. The ends of the pins 806 away from the turntables 803 are all slidably connected in the pin slots 807. A pair of symmetrically placed first knobs 808 are rotatably connected to the outer side wall of the housing sleeve 200. The two first knobs 808 are respectively fixed to the two turntables 803;

[0079] Before suturing, by manually rotating the two first knobs 808, the first knobs 808 drive the turntables 803 and the pins 806. Since the pins 806 are eccentrically placed with respect to the turntables 803, during the rotation of the turntables 803 driving the pins 806, through the cooperative setting of the pins 806 and the pin slots 807, the connecting rods 804 can be driven to move and adjust along their own axial directions. By driving the first disc 300 through the connecting rods 804, the first disc 300 can be further driven to move and adjust along the axial direction of the guide rod 100, so as to adjust the distance between the first disc 300 and the second disc 400;

[0080] Meanwhile, through the setting of the circular ring slot 805, while connecting the connecting rod 804 with the first disc 300, the interference of the connecting rod 804 in the subsequent rotation process of the first disc 300 is avoided;

[0081] Preferably, an annular track 810 is fixed in the circular ring slot 805. One end of the connecting rod 804 extends into the annular track 810, and a plurality of rollers 811 are installed at the end of the connecting rod 804 extending into the annular track 810. The rollers 811 are slidably connected to the annular track 810.

[0082] A pair of symmetrically placed first limiting discs 809 are fixedly sleeved on the guide rod 100. The radius of the first limiting discs 809 is smaller than the distance between the syringe barrel 500 and the central axis of the guide rod 100. The two first limiting discs 809 are respectively located on both sides of the first disc 300; Through the setting of the two first limiting discs 809, the moving range of the first disc 300 is effectively controlled, and the excessive movement of the first disc 300 is avoided.

[0083] The electromagnetic drive mechanism includes a toroidal electromagnet 701. The toroidal electromagnet 701 is sleeved outside the housing sleeve 200, and the toroidal electromagnet 701 and the guide rod 100 are coaxially arranged; through the setting of the toroidal electromagnet 701, the uniformity of the generated magnetic field is ensured;

[0084] Preferably, the control circuit for switching the current direction is a prior art. In this application, an optional specific embodiment is provided. The control circuit adopts a full-bridge (H-bridge) drive architecture, which is composed of four MOSFETs (Q1-Q4), and the output terminals (OUT1, OUT2) are directly connected to both ends of the toroidal electromagnet 701; the complementary conduction of the MOSFETs is controlled by a PWM signal:

[0085] When Q1 and Q4 are conducting, the current flows from OUT1 to OUT2; the electromagnetic part 700 generates a first magnetic field;

[0086] When Q2 and Q3 are conducting, the current flows from OUT2 to OUT1; the electromagnetic part 700 generates a second magnetic field;

[0087] The gates of the MOSFETs are connected to a high-speed drive chip (such as IR2104), and the switching frequency can reach the kHz level; Schottky diodes (such as SS34) are connected in parallel at both ends of the toroidal electromagnet 701 to absorb the back electromotive force and ensure the circuit safety during rapid switching.

[0088] Preferably, by controlling the current magnitude through the control circuit, the magnetic field intensity can be flexibly adjusted within the range of 10 - 300 mT to meet the requirements of different blood vessel wall hardnesses and puncture depths, ensuring the smooth movement of the suture needle 600 and the stability of the suture effect.

[0089] The electromagnetic drive mechanism further includes a plurality of second card slots 702 opened on the peripheral wall of the housing sleeve 200. The second card slots 702 are all coaxially arranged with the guide rod 100. A sliding sleeve 703 is arranged coaxially outside the guide rod 100. A second slider 704 is slidably connected in each of the second card slots 702. One end of each second slider 704 is fixed to the sliding sleeve 703, and the other end of each second slider 704 is fixed to the toroidal electromagnet 701. A sliding strip 705 coaxially arranged with the guide rod 100 is fixed on the inner wall of the sliding sleeve 703. A stopper 706 adapted to the sliding strip 705 is fixedly installed on the outer wall of the guide rod 100, and the stopper 706 is used to clamp or release the sliding strip 705;

[0090] Through the cooperative setting of the second card slots 702, the sliding sleeve 703, the second sliders 704, the sliding strip 705 and the stopper 706, it is convenient to move and adjust the toroidal electromagnet 701 along the axis of the guide rod 100, and it is convenient to control and adjust the driving force magnitude of the electromagnetic drive mechanism on the suture needle 600.

[0091] A pair of symmetrically placed second limit disks 707 are fixed on the guide rod 100, and the slide bar 705 is located between the two second limit disks 707; through the setting of the second limit disks 707, the range of position adjustment of the annular electromagnetic strip is effectively controlled, avoiding excessive adjustment of the annular electromagnet 701.

[0092] A second knob 104 is rotatably connected to the end of the housing sleeve 200 away from the second disk 400. The second knob 104 and the guide rod 100 are coaxially arranged, and one end of the guide rod 100 is fixed to the second knob 104; by rotating the second knob 104, it is convenient to drive the guide rod 100 to rotate and adjust.

[0093] A guiding tube 900 made of an elastic material is fixed to the end of the guide rod 100 close to the second disk 400. Both ends of the guiding tube 900 are open; preferably, the guiding tube 900 can be made of silica gel material. The setting of the guiding tube 900 facilitates the second disk 400 to penetrate through the damaged part and extend into the inner side of the blood vessel;

[0094] Preferably, a guiding channel 102 for guiding a guide wire to pass through is opened in the guide rod 100. One end of the guiding channel 102 penetrates through one end of the guide rod 100 close to the guiding tube 900, and the guiding channel 102 is internally connected to the guiding tube 900 in a through manner. The other end of the guiding channel 102 penetrates through the peripheral wall of the guide rod 100 close to the housing sleeve 200, and an outlet groove communicating with the guiding channel 102 is opened on the housing sleeve 200; the guide wire is guided into the guiding channel 102 through the guiding tube 900 and extends to the outside of the housing sleeve 200 through the outlet groove, so as to ensure that the guide wire can accurately guide the blood vessel suture device to the target blood vessel area; after the blood vessel suture device reaches the target position, the guide wire is withdrawn.

[0095] Preferably, a positioning Marker is provided on the guide rod 100. The positioning Marker includes an indicating pipeline 103 opened in the guide rod 100. Both ends of the indicating pipeline 103 penetrate through the peripheral wall of the guide rod 100 and communicate with the outside. One end of the indicating pipeline 103 is a liquid inlet, and the liquid inlet is located between the first disk 300 and the second disk 400 and is close to the second disk 400. The other end of the indicating pipeline 103 is a liquid outlet, and the liquid outlet is located on the peripheral wall of the guide rod 100 close to the housing sleeve 200. A marking outlet communicating with the indicating pipeline 103 is opened on the housing sleeve 200; when blood enters the indicating pipeline 103 between the first disk 300 and the second disk 400 and flows out through the marking outlet, it indicates that the blood vessel suture device has been successfully positioned and reached the predetermined blood vessel position;

[0096] Preferably, a flow guiding member 508 is provided at the open end of the syringe barrel 500. The flow guiding member 508 is hollow inside and has openings at both ends. One end of the flow guiding member 508 is connected to the syringe barrel 500 in a penetrating manner. The cross-sectional area of the inner side of the flow guiding member 508 along the axial direction of the syringe barrel 500 gradually increases from the end close to the syringe barrel 500 to the end far from the syringe barrel 500, so as to facilitate the suture needle 600 to enter the inside of the syringe barrel 500;

[0097] Two alternative embodiments of the locking portion are provided in this application for locking the suture needle 600 entering the syringe barrel 500;

[0098] Embodiment 1: The locking portion includes an electric jaw fixed inside the syringe barrel 500. A pair of symmetrically placed clamping plates are provided on the electric jaw. The central axis of the suture needle 600 is parallel to the clamping plates, and the central axis of the suture needle 600 is located in the symmetric plane of the two clamping plates; when the suture needle 600 enters the syringe barrel 500, the electric jaw can be opened to clamp and lock the suture needle 600.

[0099] Embodiment 2: As Figures 7 - 10 shown, tooth grooves 602 are provided on the circumferential walls at both ends of the suture needle 600;

[0100] The locking portion includes a pair of symmetrically placed gears 501 rotatably connected inside the syringe barrel 500. The tooth grooves 602 at both ends of the suture needle 600 can be engaged with the gears 501. A pair of symmetrically placed self-locking sliders 502 are slidably connected inside the syringe barrel 500. The self-locking sliders 502 are located on the side of the gears 501 away from the open end of the syringe barrel 500. The self-locking sliders 502 correspond to the gears 501 one by one. Sliding seats 503 for guiding the self-locking sliders 502 are fixed inside the syringe barrel 500. The self-locking sliders 502 can slide along the axial direction of the syringe barrel 500. Eccentrically arranged first hinge shafts are fixed on the gears 501. Self-locking tracks 504 are provided on the self-locking sliders 502. Second hinge shafts are fixed on the self-locking sliders 502. Hinge rods 505 are provided between the gears 501 and the corresponding self-locking sliders 502. Both ends of the hinge rods 505 are rotatably connected to the first hinge shaft and the second hinge shaft respectively. A pair of symmetrically placed locking pieces 506 are provided at the end of the syringe barrel 500 far from the open end. The locking pieces 506 are made of ferromagnetic materials. One end of the locking piece 506 is rotatably hinged to the end of the syringe barrel 500 far from the open end. The locking pieces 506 correspond to the self-locking sliders 502 one by one. The other ends of the locking pieces 506 are slidably connected inside the self-locking tracks 504 of the corresponding self-locking sliders 502. A return spring 507 is provided on the locking pieces 506;

[0101] The self-locking track 504 is as Figure 8 and Figure 9 shown. The self-locking track 504 includes a plurality of inflection points, which are inflection points a to g in sequence;

[0102] When the suture needle 600 enters the syringe barrel 500 through the flow guide 508, after the suture needle 600 meshes with the gear 501, the locking piece 506 starts to move along the track from point a under the action of magnetic force. When passing through the corner at point b, due to the height difference between the inner and outer sides of the self-locking track 504 and the geometric resistance of the corner, the locking piece 506 stays briefly and locks at point c. At this time, the magnetic force is turned off, and the locking piece 506 slides to point d to lock, preventing the suture needle 600 from shifting or sliding due to external force. When unlocking is required, the magnetic force is restored, and the locking piece 506 continues to move along the track to point e to release the lock. Then, the magnetic field is turned off, and the locking piece 506 returns to its initial position via points f and g with the help of the return spring 507 to achieve unlocking. By switching the direction of the magnetic field, the suture needle 600 moves out of the syringe barrel 500 along the flow guide 508 and is recovered into another syringe barrel 500.

[0103] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0104] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. An electromagnetic-driven vascular suture device, comprising a guide rod (100), with a housing sleeve (200) rotatably sleeved at one end of the guide rod (100), characterized in that: A first disc (300) and a second disc (400) coaxial with the guide rod (100) are connected to the end of the guide rod (100) far from the housing sleeve (200), and the first disc (300) is located at the end of the second disc (400) close to the housing sleeve (200); Syringes (500) are fixed on both the first disc (300) and the second disc (400). The two syringes (500) are coaxial. The central axis of the syringe (500) is parallel to the central axis of the guide rod (100) and maintains a fixed offset distance. The mutually approaching ends of the two syringes (500) are both open. A suture needle (600) coaxial with the guide rod (100) is arranged between the two syringes (500). Both axial ends of the suture needle (600) are conical, and the suture needle (600) contains ferromagnetic material; A wire groove (101) for placing a suture thread is opened in the guide rod (100). One end of the wire groove (101) penetrates through the peripheral wall of the guide rod (100) between the first disc (300) and the second disc (400), and one end of the suture thread passes through the wire groove (101) and is fixed to the middle section of the suture needle (600); An electromagnetic driving mechanism is provided on the housing sleeve (200). The electromagnetic driving mechanism includes an electromagnetic part (700) and a control circuit connected to the electromagnetic part (700). The electromagnetic part (700) is used to generate a magnetic field after being energized, and the control circuit is used to switch the current direction input to the electromagnetic part (700). The electromagnetic driving mechanism is used to drive the suture needle (600) to move axially along the guide rod (100); Locking parts for locking the suture needle (600) are provided in both syringes (500).

2. The electromagnetic drive vascular suture device according to claim 1, wherein The second disc (400) is fixedly sleeved on the peripheral wall of the guide rod (100), and the first disc (300) is slidably sleeved on the guide rod (100). An adjusting part (800) connecting the first disc (300) is provided on the housing sleeve (200), and the adjusting part (800) is used to drive the first disc (300) to move along the axis direction of the guide rod (100).

3. The electromagnetic drive blood vessel suture device according to claim 2, characterized in that, The adjusting part (800) includes a first card slot (801) opened on the peripheral wall of the guide rod (100). The first card slot (801) is arranged along the axis direction of the guide rod (100), and a first slider (802) slidably connected in the first card slot (801) is fixed on the inner side wall of the first disc (300).

4. The electromagnetic drive blood vessel suture device according to claim 3, wherein The adjusting part (800) further includes a pair of symmetrically placed turntables (803). The central axes of the two turntables (803) are both perpendicular to the central axis of the guide rod (100). The turntables (803) are both located between the inner wall of the housing sleeve (200) and the peripheral wall of the guide rod (100), and the turntables (803) are both rotatably connected to the housing sleeve (200). The two turntables (803) are respectively located on both sides of the guide rod (100). Connecting rods (804) are provided between the turntables (803) and the guide rod (100). The connecting rods (804) are both placed coaxially with the guide rod (100). An annular groove (805) placed coaxially is formed at the end of the first disc (300) close to the housing sleeve (200). One end of the connecting rod (804) slides through the housing sleeve (200) and is slidably connected in the annular groove (805). The connecting rods (804) can all slide along their own axial directions. Pins (806) facing the corresponding side connecting rods (804) are fixed on the turntables (803). The pins (806) are placed coaxially with the turntables (803), and are close to the peripheral side edge of the turntables (803). Pin grooves (807) are formed on the peripheral walls of the connecting rods (804). The central axes of the pin grooves (807) are all perpendicular to the central axis of the connecting rods (804). The ends of the pins (806) far from the turntables (803) are all slidably connected in the pin grooves (807). A pair of symmetrically placed first knobs (808) are rotatably connected to the outer side wall of the housing sleeve (200). The two first knobs (808) are respectively fixed to the two turntables (803).

5. The electromagnetic drive vascular suture device according to claim 4, wherein A pair of symmetrically placed first limit discs (809) are fixedly sleeved on the guide rod (100). The radius of the first limit discs (809) is smaller than the distance between the syringe barrel (500) and the central axis of the guide rod (100). The two first limit discs (809) are respectively located on both sides of the first disc (300).

6. The electromagnetic drive blood vessel suture device according to claim 5, wherein The electromagnetic driving mechanism includes an annular electromagnet (701). The annular electromagnet (701) is sleeved on the outer side of the housing sleeve (200), and the annular electromagnet (701) is placed coaxially with the guide rod (100).

7. The electromagnetic drive vascular suture device according to claim 6, characterized in that, The electromagnetic driving mechanism further includes a plurality of second slots (702) formed on the peripheral wall of the housing sleeve (200). The second slots (702) are all placed coaxially with the guide rod 1(00). A sliding sleeve (703) placed coaxially is provided outside the guide rod (100). Second sliders (704) are slidably connected in the second slots (702). One end of each second slider (704) is fixed to the sliding sleeve (703), and the other end of each second slider (704) is fixed to the annular electromagnet (701). A slide bar (705) placed coaxially with the guide rod (100) is fixed on the inner wall of the sliding sleeve (703). A stopper (706) adapted to the slide bar (705) is fixedly installed on the outer side wall of the guide rod (100). The stopper (706) is used to clamp or release the slide bar (705).

8. The electromagnetic drive vascular suture device according to claim 7, wherein A pair of symmetrically placed second limit discs (707) are fixed on the guide rod (100). The slide bar (705) is located between the two second limit discs (707).

9. The electromagnetic drive vascular suture device according to claim 8, characterized in that, A second knob (104) is rotatably connected to the end of the housing sleeve (200) away from the second disc (400). The second knob (104) and the guide rod (100) are coaxially arranged, and one end of the guide rod (100) is fixed to the second knob (104).

10. The electromagnetic drive vascular suture device according to claim 9, wherein A guide tube (900) made of an elastic material is fixed to the end of the guide rod (100) close to the second disc (400). Both ends of the guide tube (900) are open.

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