Suturing device and operation method thereof

Abstract

The invention relates to a suturing device and an operation method thereof. The suturing device is characterized in that a first orbital transfer sliding groove is formed in one side of the inner wall of an operation shell; at least part of the button assembly is arranged in the operation shell; the button assembly comprises a spiral part; the needle seat assembly is arranged in the operation shell; the needle seat assembly comprises a first needle seat which is connected and matched with the spiral part and a plunger which is elastically connected with the side wall of the first needle seat; the plunger moves in the first orbital transfer sliding groove. The suture piece is fixedly connected with the first needle seat; the suture piece comprises a suture needle and a needle head which are tightly matched; the lifting assembly cooperates with the first needle base to move. The puncture tube is fixedly connected with the operation shell; the puncture tube is provided with a second needle seat, and the second needle seat is provided with a needle storage groove used for clamping a needle head. By pressing or loosening the button assembly, the suture needle and the needle head are inserted into the needle storage groove or the suture needle is separated from the needle head, the needle head is left in the needle storage groove or the suture needle is inserted into the needle storage groove again to drive the needle head to be separated from the needle storage groove, and suture is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a suturing device and an operating method thereof for suturing or reconstructing passages of incised or traumatically ruptured tissues and organs to restore their functions. Background Art

[0002] Minimally invasive surgery generally utilizes modern digital imaging technology and advanced medical equipment, and can complete the surgery with only relatively small wounds. The trauma to skin tissue is relatively small, but any surgery will produce wounds of a certain size. In order to promote faster healing of local wounds, sutures are usually required, which can promote local hemostasis or healing, thereby facilitating faster recovery from the disease.

[0003] After minimally invasive surgery, the puncture site needs to be hemostatically sutured. Currently, hospitals mostly use manual suturing and knotting to stop bleeding. For example, in laparoscopic cholecystectomy, appendectomy, and inguinal hernia repair, only a 0.5cm-1cm incision is usually made in the abdomen. Depending on the patient's physical condition, such an incision may not require suturing if the apposition is good. Radical resections for gastric and intestinal cancers within the abdominal cavity significantly reduce the trauma to the patient compared to traditional open surgery, but stitches cannot be completely avoided, so medical staff are required to suture and knot the puncture site.

[0004] Taking the minimally invasive suture surgery for congenital heart disease as an example, there are mainly small incision surgery under the armpit, thoracoscopic surgery, surgical repair surgery, and heart beating surgery under extracorporeal circulation. Atrial septal defects, ventricular septal defects, etc. are repaired through minimally invasive cardiac surgery. During this process, medical staff are also required to suture and knot the puncture site.

[0005] The above method has the following disadvantages: it is time-consuming and labor-intensive, and the operation is complicated. It requires medical staff to have rich suturing experience, otherwise the stability of suture hemostasis cannot be achieved. Summary of the Invention

[0006] In view of the deficiencies in the prior art, the present invention discloses a suturing device and an operating method thereof.

[0007] The technical solutions adopted in the present invention are as follows:

[0008] A suturing device comprising:

[0009] An operating housing has a first track-changing slot formed on one side of its inner wall;

[0010] A button assembly, at least part of which is disposed in the operating housing; the button assembly comprises a main body and a spiral portion connected to the main body;

[0011] A needle seat assembly is disposed in the operating housing; the needle seat assembly includes a first needle seat connected to and mating with the spiral portion, and a plunger elastically connected to a side wall of the first needle seat; the plunger moves in the first track-changing slot;

[0012] A suturing piece, fixedly connected to the first needle seat; the suturing piece comprises a tightly fitting suturing needle and a needle head;

[0013] A lifting assembly includes a base disposed within the operating housing, a lifting valve elastically connected to the base, and a rocker swingably connected to the lifting valve, wherein the lifting valve defines a second track-changing chute; one end of the rocker moves unidirectionally within the second track-changing chute, and the other end of the rocker is hingedly connected to the base;

[0014] The puncture tube is fixedly connected to the operating housing; the puncture tube is provided with a second needle seat which can be accommodated in the puncture tube, and the second needle seat is provided with a needle storage groove for clamping the needle;

[0015] In which, the plunger and the rocker respectively have multiple motion states; when the plunger and the rocker are in the first motion state, the suture needle and the needle head are in a locked state and are inserted into the needle storage tank together; when the plunger and the rocker are in the second motion state, the suture needle rotates and disengages from the needle head, and the suture needle and the needle head are in an unlocked state; when the plunger and the rocker are in the third motion state, the suture needle is inserted into the needle head, the needle head is re-locked and disengaged from the needle storage tank.

[0016] In one embodiment of the present invention, the operating shell includes a first shell and a second shell that are interlocked with each other; the inner wall of the second shell is provided with the first track-changing slide groove; the first track-changing slide groove includes a first track and a third track arranged in parallel, and a second track and a fourth track arranged between the first track and the third track and connected to both the first track and the third track, and the fourth track is located above the second track; the plunger can move in the first track, the second track, the third track and the fourth track in sequence.

[0017] In one embodiment of the present invention, the second track-changing slide groove includes a first channel, a second channel and a third channel that are connected; when the plunger moves from the first track to the second track, the plunger squeezes the lifting valve, and the rocker arm enters the second channel from the first channel; when the plunger moves from the second track to the third track, the plunger and the lifting valve are separated, and the rocker arm is in the second channel; the plunger moves from the third track to the fourth track; the plunger moves from the fourth track to the first track; the plunger moves along the first track, squeezes the lifting valve, and the rocker arm enters the third channel; the plunger moves upward along the first track, and the rocker arm enters the first channel along the third channel, which is one cycle.

[0018] In one embodiment of the present invention, the suture needle and the needle head are matched in a manner of a snap connection, a threaded connection and a cam connection; and one end of the suture thread is fixed to the side wall of the needle head.

[0019] In one embodiment of the present invention, a guide member is further included in the puncture tube, wherein the guide member defines a suture needle channel, and the suture needle and the needle head pass through the suture needle channel and are inserted into the needle storage tank.

[0020] In one embodiment of the present invention, a suture needle entrance is provided at one end of the guide member, and a suture needle outlet is provided on the outer wall of the guide member. The center of the suture needle entrance and the center of the suture needle outlet are not in the same straight line, and the connection between the suture needle entrance and the suture needle outlet forms the suture needle channel.

[0021] In one embodiment of the present invention, it also includes a knob assembly for pulling the second needle seat, and the knob assembly includes an axially movable element arranged in the operating shell and a rotating operating element threadedly connected to the axially movable element. The axially movable element connects the connecting wire and the puncture needle, and the connecting wire and the puncture needle both pass through the guide member. One end of the connecting wire is fixedly connected to the second needle seat.

[0022] In one embodiment of the present invention, it further comprises a fixing flap and a guide ring sleeved on the puncture tube, wherein the fixing flap can be opened at one end close to the guide ring to cooperate with the second needle seat.

[0023] In one embodiment of the present invention, the main body includes a button and a spiral handle, and the spiral handle is respectively connected to the button and the spiral portion.

[0024] The present invention also provides an operating method of a suturing device, comprising the following steps:

[0025] S1. Press the button assembly, the plunger and the rocker are in the first motion state, and the suture needle and the needle head are inserted into the needle storage groove of the second needle seat;

[0026] S2. Continue to press the button assembly, the plunger and the rocker are in the second motion state, the suture needle rotates, and the needle head does not rotate in the needle storage slot; release the button assembly, the suture needle and the needle head separate and the suture needle retracts, and the needle head remains in the second needle seat;

[0027] S3, pressing the button assembly again, the suture needle enters the second needle seat again and connects with the needle; releasing the button assembly, the suture needle drives the needle out of the second needle seat;

[0028] Repeat steps S1-S3 until suturing is achieved.

[0029] The above technical solution of the present invention has the following advantages over the prior art:

[0030] The suturing device of the present invention can be used for suturing and stopping bleeding in puncture sites such as the heart. It has a simple structure and is quick to operate, greatly saving time and labor costs, and its hemostasis stability is higher than that of manual suturing.

[0031] The suturing needle and the needle head in the suturing device described in the present invention are connected through a detachable connection. When the button assembly is pressed, the suturing needle and the needle head are inserted into the needle storage slot of the second needle seat. The button assembly is continued to be pressed, and the suturing needle rotates. Since the front end of the needle head is elliptical, the needle head and the second needle seat are locked in the rotation direction, and the needle head does not rotate. At this time, the suturing needle will unlock the needle head; release the button, and the second needle seat clamps the needle head, so the suturing needle retracts, and the needle head detaches from the suturing needle and remains in the second needle seat; press the button again, and the suturing needle enters the second needle seat again to connect with the needle head. Release the button, and since the connection force is greater than the clamping force of the second needle seat on the needle head, the suturing needle brings the needle head out of the second needle seat. Repeating the above actions can achieve skin or tissue puncture suturing with sutures. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0033] Figure 1 It is a schematic structural diagram of the suturing device according to the first embodiment of the present invention.

[0034] Figure 2 1 is an exploded view of the suturing device according to the first embodiment of the present invention.

[0035] Figure 3 It is a schematic structural diagram of a suturing device according to a second embodiment of the present invention.

[0036] Figure 4 It is an exploded view of the suturing device of Example 2 of the present invention.

[0037] Figure 5 It is a structural schematic diagram of the button assembly, needle seat assembly and suture needle in the present invention from a first perspective.

[0038] Figure 6 It is a structural schematic diagram of the button assembly, needle seat assembly and suture needle in the present invention from a second perspective.

[0039] Figure 7 It is a structural schematic diagram of the needle seat assembly, part of the suture needle, the rotating operating element and the axial moving element in the present invention.

[0040] Figure 8 It is a schematic diagram of the first state of the cooperation among the guide member, the second needle seat, the puncture needle and the guide needle head in the present invention.

[0041] Figure 9 It is a schematic diagram of the second state of the cooperation among the guide member, the second needle seat, the puncture needle and the guide needle head in the present invention.

[0042] Figure 10 This is a schematic diagram of the first state of the cooperation between the fixed flap and the puncture tube in the present invention.

[0043] Figure 11 It is a schematic diagram of the second state of the cooperation between the fixed valve and the puncture tube in the present invention.

[0044] Figure 12 It is a structural schematic diagram of the second shell in the present invention from a first perspective.

[0045] Figure 13 It is a structural schematic diagram of the second shell in the present invention from a second viewing angle.

[0046] Figure 14 It is a structural schematic diagram of the lifting assembly in the present invention.

[0047] Figure 15 It is an exploded view of the lifting assembly in the present invention.

[0048] Figure 16 It is a schematic diagram of the lift valve in the present invention.

[0049] Figure 17 It is a structural schematic diagram of the first state of cooperation between the suture needle and the needle head in the present invention.

[0050] Figure 18 It is a structural schematic diagram of the second state of the suture needle and the needle head in the present invention.

[0051] Figure 19 1 is an exploded view of the suture needle of the present invention and the needle head of Example 1.

[0052] Figure 20It is a cross-sectional view of the needle head and the second needle seat of the first embodiment of the present invention.

[0053] Figure 21 It is a side view of the needle head and the second needle seat of Example 1 of the present invention.

[0054] Figure 22 It is an exploded view of the suture needle of the present invention and the needle head of Example 2.

[0055] Figure 23 It is a cross-sectional view of the needle head and the second needle seat of the second embodiment of the present invention.

[0056] Figure 24 It is a structural schematic diagram of the guide member in the present invention.

[0057] Figure 25 It is a cross-sectional view of the guide member in the present invention.

[0058] Figure 26 It is a motion diagram of the button assembly, needle seat assembly and lifting assembly in the present invention.

[0059] Figure 27 It is a motion diagram of the lifting assembly in the present invention.

[0060] Description of the accompanying drawings:

[0061] 100. Button assembly; 101. Button; 102. Screw handle; 103. Screw portion;

[0062] 201, handle; 202, first elastic element; 203, second elastic element;

[0063] 301, first housing; 302, second housing; 3021, first track; 3022, second track; 3023, third track; 3024, fourth track; 303, locking cap; 304, puncture tube; 305, guide needle;

[0064] 400, needle seat assembly; 401, first needle seat; 402, plunger; 403, third elastic element;

[0065] 500, lifting assembly; 501, lifting valve; 5011, mating surface; 5012, second track-changing slide; 502, rocker; 503, base; 504, guide column; 505, fourth elastic element; 506, fixing assembly;

[0066] 601, rotary operating element; 602, axial moving element; 603, connecting wire; 604, second needle seat; 605, puncture needle;

[0067] 700, suture piece; 701, suture needle; 7011, slot; 702, needle; 7021, tongue; 7022, fixing slot; 703, suture thread;

[0068] 800, guide member; 801, connecting wire channel; 802, puncture needle channel; 803, suture needle inlet; 804, suture needle outlet; 805, limit groove;

[0069] 901. Fixed flap; 902. Guide ring. DETAILED DESCRIPTION

[0070] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0071] The foregoing and other technical aspects, features, and functions of the present invention will be more clearly understood in the following detailed description of the embodiments with reference to the accompanying drawings. Directional terms such as up, down, left, right, front, and back, used in the following embodiments, are merely references to the accompanying drawings. Therefore, the directional terms used are for illustrative purposes only and are not intended to limit the present invention. Furthermore, throughout the embodiments, the same reference numerals denote the same elements.

[0072] Example 1

[0073] Combine Figure 1 、 Figure 2 as well as Figures 5 to 9 , a suturing device comprising:

[0074] An operating housing has a first track-changing slot formed on one side of its inner wall;

[0075] The button assembly 100 is at least partially disposed in the operating housing; the button assembly 100 includes a main body and a spiral portion 103 connected to the main body;

[0076] The needle seat assembly 400 is disposed in the operating housing; the needle seat assembly 400 includes a first needle seat 401 connected to and mating with the spiral portion 103 and a plunger 402 elastically connected to the side wall of the first needle seat 401; the plunger 402 moves in the first track change slot;

[0077] The suture piece 700 is fixedly connected to the first needle seat 401; the suture piece 700 includes a suture needle 701 and a needle head 702 that form a matching connection;

[0078] The lifting assembly 500 includes a base 503 disposed within the operating housing, a lifting valve 501 elastically connected to the base 503, and a rocker 502 swingably connected to the lifting valve 501. The lifting valve 501 defines a second track-changing slot 5012. One end of the rocker 502 moves unidirectionally within the second track-changing slot 5012, and the other end of the rocker 502 is hingedly connected to the base 503.

[0079] The puncture tube 304 is fixedly connected to the operating housing; the puncture tube 304 is provided with a second needle seat 604 which can be accommodated in the puncture tube 304, and the second needle seat 604 is provided with a needle storage groove for clamping the needle 702;

[0080] Among them, the plunger 402 and the rocker 502 respectively have multiple motion states; when the plunger 402 and the rocker 502 are in the first motion state, the suture needle 701 and the needle 702 are in a locked state and inserted into the needle storage tank together; when the plunger 402 and the rocker 502 are in the second motion state, the suture needle 701 rotates and disengages from the needle 702, and the suture needle 701 and the needle 702 are in an unlocked state; when the plunger 402 and the rocker 502 are in the third motion state, the suture needle 701 is inserted into the needle 702, the needle 702 is re-locked and disengaged from the needle storage tank.

[0081] This embodiment provides a suturing device that can be used to suture and stop bleeding in puncture wounds during minimally invasive surgery on parts of the heart and other parts of the body. The suturing device provided in this embodiment has a simple structure and is quick to operate, greatly saving time and labor costs, and its hemostasis stability is higher than that of manual suturing.

[0082] In this embodiment, combined with Figure 12 and Figure 13 The operating shell includes a first shell 301 and a second shell 302 that are interlocked with each other; the inner wall of the second shell 302 is provided with a first track-changing slot; the first track-changing slot includes a first track 3021 and a third track 3023 that are arranged in parallel, and a second track 3022 and a fourth track 3024 that are arranged between the first track 3021 and the third track 3023 and are connected to the first track 3021 and the third track 3023, and the fourth track 3024 is located above the second track 3022; the plunger 402 can move in the first track 3021, the second track 3022, the third track 3023 and the fourth track 3024 in sequence. Among them, the fourth track 3024 has a first track portion close to the first track 3021 and a second track portion close to the third track 3023, the first side of the first track portion serves as an entrance for the movement of the plunger 402, the first side of the second track portion serves as an exit for the movement of the plunger 402, the second side of the first track portion and the second side of the second track portion intersect and form a preset angle, such as Figure 12Furthermore, there is a height difference between the second track 3022 and the third track 3023, and there is no height difference between the first track 3021 and the second track 3022, so the cross section of the second track 3022 is an arc.

[0083] Specifically, the first shell 301 and the second shell 302 can be fastened together in the following manner: positioning posts are provided on one side of the first shell 301, and positioning holes are provided on one side of the second shell 302. The number and position of the positioning posts correspond to the number and position of the positioning holes. When the first shell 301 and the second shell 302 are assembled with the positioning posts inserted into the positioning holes, a roughly cylindrical operating shell is formed, which has a storage space within it. Furthermore, a handle 201 is provided on one side of the operating shell, and a locking cap 303 is provided on the other side of the operating shell.

[0084] In this embodiment, combined with Figure 1 and Figure 2 The main body includes a button 101 and a spiral handle 102, and the spiral handle 102 connects the button 101 and the spiral portion 103 respectively. Specifically, the spiral portion 103 includes a central body and a plurality of spiral wings arranged along the outer wall of the central body. Correspondingly, in order to cooperate with the spiral wings of the spiral portion 103, a plurality of notches are provided on one side inner wall of the first needle seat 401, and a first elastic element 202 is provided between the button assembly 100 and the first needle seat 401, one end of the first elastic element 202 abuts the bottom of the spiral handle 102, and the other end of the first elastic element 202 abuts a limiting element provided in the first needle seat 401. It should be noted that the limiting element only needs to be able to support the other end of the first elastic element 202. For example, the limiting element can be a circular plate with an outer diameter smaller than the inner diameter of the first needle seat 401.

[0085] Further, combined with Figure 6 and Figure 7 , a guide column is formed along the radial direction of the spiral portion 103, and the guide column only moves within the first track 3021.

[0086] In this embodiment, the plunger 402 is sleeved with a third elastic element 403 , one end of the third elastic element 403 abuts against the plunger 402 , and the other end of the third elastic element 403 abuts against the first needle seat 401 .

[0087] In this embodiment, combined with Figure 14 and Figure 15 A guide column 504 is provided on one side of the lifting valve 501, and the guide column 504 passes through the base 503 and abuts against the step portion provided on the inner wall of the second shell 302; a fourth elastic element 505 is sleeved on the guide column 504, and one end of the fourth elastic element 505 abuts against the lifting valve 501, and the other end of the fourth elastic element 505 abuts against the base 503.

[0088] In addition, the lifting valve 501 has a mating surface 5011 that subsequently forms a mating with the plunger 402. The mating surface 5011 has a slope, with the highest point of the mating surface 5011 near the third track 3023 and the lowest point of the mating surface 5011 near the first track 3021.

[0089] One end of the rocker 502 is provided with a connecting post in the second track-changing chute 5012, and the other end of the rocker 502 is fixedly connected to the base 503 via a fixing assembly 506. Specifically, the fixing assembly 506 includes a bolt and a nut. The bolt passes through the base 503 and the rocker 502 in sequence and is tightened by the nut to fix the other end of the rocker 502 to the base 503.

[0090] like Figure 16 As shown, the second track-changing slide 5012 includes a first channel L1, a second channel L2 and a third channel L3 that are connected; when the plunger 402 moves from the first track 3021 to the second track 3022, the plunger 402 squeezes the lifting valve 501, and the rocker arm 502 enters the second channel L2 from the first channel L1; when the plunger 402 moves from the second track 3022 to the third track 3023, the plunger 402 and the lifting valve 501 are separated, and the rocker arm 502 is in the second channel L2; when the plunger 402 moves from the third track 3023 to the fourth track 3024, the rocker arm 502 enters the third channel L3 from the second channel L2. The interconnected first, second, and third channels L1, L2, and L3 are generally heart-shaped. The first channel L1 is an ascending channel, while the second channel L2 is a descending channel connected to the first channel L1. The second channel L2 is also connected to the ascending channel connected to the third channel L3, while the third channel L3 is a descending channel. The extensions of the first and third channels L1 intersect at a point. Specifically, a protrusion is provided at the end where the second and third channels L2 connect, restricting the movement of the connecting post of the rocker 502.

[0091] In this embodiment, combined with Figure 17 and Figure 18 One end of the suture 703 is fixed to the side wall of the needle 702, that is, one end of the suture 703 is fixed in the fixing groove 7022 provided in the needle 702 in the form of a special-shaped head. It should be noted that as long as the special-shaped head is larger than the threading port, it can prevent the suture 703 from being separated from the needle 702. The special-shaped head can be formed by heat melting or knotting.

[0092] The matching mode of the suture needle 701 and the needle head 702 is one of a snap connection, a thread connection and a cam connection; Figures 19 to 21The side wall of the suture needle 701 is provided with a card slot 7011, and the side wall of the needle head 702 is provided with an elastic tongue 7021. The suture needle 701 and the needle head 702 are matched and connected through the snap connection between the tongue 7021 and the card slot 7011.

[0093] The needle 702 and the needle storage groove of the second needle seat 604 are interference fit. After the needle 702 enters the needle storage groove of the second needle seat 604, it will be clamped by the needle storage groove, so that the needle 702 with the suture thread 703 cannot rotate after entering the second needle seat 604.

[0094] As a variation, combined Figure 22 and Figure 23 , the needle 702 can be designed as follows Figure 22 The structure shown, with Figure 19 The structures of the needles 702 shown differ in the diameter of the needles 702 .

[0095] In this embodiment, combined with Figure 8 、 Figure 24 and Figure 25 The suturing device further includes a guide member 800 disposed within the puncture tube 304. The guide member 800 defines a suturing needle channel, through which the suturing needle 701 and the needle head 702 pass and are inserted into the needle storage tank. Specifically, a suturing needle inlet 803 is disposed at one end of the guide member 800, and a suturing needle outlet 804 is disposed on an outer wall of the guide member 800. The centers of the suturing needle inlet 803 and the centers of the suturing needle outlet 804 are not in the same straight line, and the connection between the suturing needle inlet 803 and the suturing needle outlet 804 forms the suturing needle channel.

[0096] In this embodiment, a knob assembly for pulling the second needle seat 604 is also included. The knob assembly includes an axially movable element 602 disposed in the operating housing and a rotary operating element 601 threadedly connected to the axially movable element 602. The axially movable element 602 connects the connecting wire 603 and the puncture needle 605. The connecting wire 603 and the puncture needle 605 both pass through the guide member 800. One end of the connecting wire 603 is fixedly connected to the second needle seat 604. It is understood that the side wall of the guide member 800 also defines a connecting wire channel 801 and a puncture needle channel 802, and the connecting wire channel 801, the puncture needle channel 802, and the suture needle channel are all independent channels to prevent the connecting wire 603, the puncture needle 605, and the suture member 700 from being entangled or interfering.

[0097] One end of the connecting wire 603 is spherical and fixed on the second needle seat 604. The material of the connecting wire 603 is generally nickel-titanium alloy.

[0098] Furthermore, a second elastic element 203 is provided between the first needle seat 401 and the axially movable element 602 . One end of the second elastic element 203 is connected to the first needle seat 401 , and the other end of the second elastic element 203 abuts against the axially movable element 602 .

[0099] The working principle of the knob assembly is as follows: the suture needle 701 enters the puncture tube 304 through the axial moving element 602, the other end of the connecting wire 603 and the other end of the puncture needle 605 are fixed on the axial moving element 602, the axial moving element 602 is threadedly engaged with the rotating operating element 601, and the rotating operating element 601 is rotated to make the axial moving element 602 drive the connecting wire 603 and the puncture needle 605 to move back and forth in the puncture tube 304. It should be noted that the back and forth movement here is relative to Figure 8 The state of the guide member 800 shown will be described.

[0100] Further, combined with Figure 9 and Figure 25 In order to allow the second needle seat 604 to be pulled up by the connecting wire 603, there is a supporting portion. A limiting groove 805 is opened on one side of the guide member 800. When the second needle seat 604 is pulled up, a part of the second needle seat 604 is accommodated in the limiting groove 805, and the limiting groove 805 provides a certain supporting force for the second needle seat 604.

[0101] In this embodiment, the suturing device further includes a guide needle head 305 connected to the puncture tube 304, through which the puncture needle 605 can pass. One end of the puncture needle 605 is a needle tip, which is located at the front end of the entire device through the guide needle head 305 and is used to puncture tissue such as the heart wall. After puncture is completed, the needle tip of the puncture needle 605 retracts into the guide needle head 305 to prevent scratching and causing damage to the tissue.

[0102] Combine Figure 26 and Figure 27 , the working principle of this embodiment is as follows:

[0103] In the initial state, the guide post and the plunger 402 are located in the first track 3021. Figure 26 As shown in a in FIG, the guide column is always located in the first track 3021 and moves left and right throughout the entire motion trajectory, that is, the button assembly 100 only moves left and right; the connecting column of the rocker 502 is located at the lowest point of the second track change slot 5012 of the lifting valve 501, that is, the lowest point of the first channel L1, as shown in FIG. Figure 27 As shown in a;

[0104] First, if Figure 26 As shown in b in FIG, the operator presses the button 101, and the guide column and the plunger 402 move to the right along the first track 3021; Figure 27As shown in b, the plunger 402 presses the lifting valve 501, and the connecting column of the rocker 502 moves clockwise into the ascending section of the first channel L1; at this time, the suture needle 701 and the needle head 702 are in a locked state and inserted into the needle storage tank together;

[0105] Secondly, the plunger 402 presses the lift valve 501 to open the second track 3022, and the plunger 402 enters the second track 3022, so that the lift valve 501 is continued to be pressed. Figure 26 c and Figure 26 At this time, the plunger 402 can enter the third track 3023 through the second track 3022, as shown in d; Figure 26 As shown in FIG. 5 , the needle hub assembly 400 , i.e., the first needle hub 401 , drives the suture piece 700 to rotate 90°;

[0106] When the plunger 402 enters the third track 3023, the plunger 402 releases the pressure on the lift valve 501, and the fourth elastic element 505 pushes the lift valve 501 upward, so that the connecting post of the rocker 502 enters the second channel L2. Figure 27 c and Figure 27 As shown in d; at this time, the suture needle 701 rotates and disengages from the needle 702, and the suture needle 701 and the needle 702 are in an unlocked state;

[0107] like Figure 26 As shown in FIG. 5 , there is a height difference between the second track 3022 and the third track 3023 , that is, when the button 101 is released, the second elastic element 203 causes the plunger 402 to move leftward along the third track 3023 ;

[0108] Combine Figure 26 g to Figure 26 As shown in FIG. 1 , the first elastic element 202 causes the plunger 402 to pass through the fourth track 3024 and then enter the first track 3021 ;

[0109] like Figure 26 As shown in FIG. 1 , the operator presses the button 101 , and the guide column and the plunger 402 move to the right along the first track 3021 ;

[0110] like Figure 26 As shown in Figure k, the plunger 402 presses the lift valve 501. At this time, the first needle seat 401 rotates about 10 degrees, and the connecting column of the rocker 502 enters the ascending section of the second channel L2 from the descending section of the second channel L2, as shown in Figure k. Figure 27 e and Figure 27 As shown in f, the button 101 cannot be pressed any further at this time;

[0111] like Figure 26As shown in FIG1 , the button 101 is released, the plunger 402 returns to the first track 3021 and returns to the initial state. The plunger 402 releases the pressure on the lift valve 501, and the fourth elastic element 505 pushes the lift valve 501 upward, causing the connecting post of the rocker 502 to enter the third channel L3 and finally reach the first channel L1, returning to the initial state. Figure 27 g and Figure 27 At this time, the suture needle 701 is inserted into the needle head 702, and the needle head 702 is relocked and separated from the needle storage groove.

[0112] Combining the locking and unlocking methods of the suture needle and the needle head and manually rotating the operating shell, the needle head 702 can carry the suture thread 703 through the skin or tissue repeatedly to achieve surgical suturing.

[0113] Example 2

[0114] Combine Figure 3 、 Figure 4 、 Figure 10 and Figure 11 Based on the first embodiment, this embodiment provides a suturing device, which also includes a fixed flap 901 and a guide ring 902 which are sleeved on the puncture tube 304. The fixed flap 901 can be opened at one end close to the guide ring 902 to cooperate with the second needle seat 604.

[0115] In this embodiment, the fixed flap 901 is a flexible member, and one end of the fixed flap 901 close to the guide ring 902 is separated into a plurality of abutment elements. When the abutment elements contact the guide ring 902, the plurality of abutment elements open.

[0116] Furthermore, a row of through holes with equal spacing is provided on the puncture tube 304, and a protrusion is provided on the inner wall of the fixed flap 901. The interference fit between the protrusion and the through hole prevents the fixed flap 901 from retreating, thereby ensuring that the heart is clamped.

[0117] The suturing device provided in this embodiment can be applied to cardiac suturing surgery. Specifically, the second needle seat 604 hooks the inner wall of the heart and pushes the fixed flap 901. When one end of the fixed flap 901 contacts the guide ring 902, the guide ring 902 causes one end of the fixed flap 901 to open. The fixed flap 901 and the second needle seat 604 jointly clamp the inner wall, so that when the heart beats, the suturing device is stationary relative to the heart, thereby ensuring accuracy and stability during the suturing process.

[0118] The working principle of this embodiment is basically the same as that of the first embodiment, and will not be described in detail here.

[0119] The suturing device provided in the first or second embodiment can be used for suturing operations in minimally invasive cardiac surgeries, pulmonary artery surgeries, thoracic puncture surgeries, abdominal puncture surgeries, and the like.

[0120] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0121] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A suturing device, characterized in that: include: An operating housing has a first track-changing slot formed on one side of its inner wall; A button assembly (100) is at least partially disposed in the operating housing; the button assembly (100) comprises a main body and a spiral portion (103) connected to the main body; A needle seat assembly (400) is provided in the operating housing; the needle seat assembly (400) comprises a first needle seat (401) connected to and mated with the spiral portion (103) and a plunger (402) elastically connected to the side wall of the first needle seat (401); the plunger (402) moves in the first track-changing slot; A suturing piece (700) is fixedly connected to the first needle seat (401); the suturing piece (700) comprises a suturing needle (701) and a needle head (702) that form a matching connection; The lifting assembly (500) comprises a base (503) provided in the operating housing, a lifting valve (501) elastically connected to the base (503), and a rocker (502) swingably connected to the lifting valve (501); the lifting valve (501) defines a second track-changing chute (5012); one end of the rocker (502) moves unidirectionally in the second track-changing chute (5012), and the other end of the rocker (502) is hinged to the base (503); The puncture tube (304) is fixedly connected to the operating housing; the puncture tube (304) is provided with a second needle seat (604) that can be accommodated in the puncture tube (304), and the second needle seat (604) is provided with a needle storage groove for clamping the needle (702); Wherein, the plunger (402) and the rocker (502) respectively have multiple motion states; when the plunger (402) and the rocker (502) are in the first motion state, the suture needle (701) and the needle head (702) are in a locked state and are inserted into the needle storage tank together; when the plunger (402) and the rocker (502) are in the second motion state, the suture needle (701) rotates and disengages from the needle head (702), and the suture needle (701) and the needle head (702) are in an unlocked state; when the plunger (402) and the rocker (502) are in the third motion state, the suture needle (701) is inserted into the needle head (702), relocks the needle head (702) and disengages from the needle storage tank.

2. The suturing device according to claim 1, characterized in that The operating housing comprises a first housing (301) and a second housing (302) which are engaged with each other; the inner wall of the second housing (302) is provided with the first track-changing chute; the first track-changing chute comprises a first track (3021) and a third track (3023) which are arranged in parallel, and a second track (3022) and a fourth track (3024) which are arranged between the first track (3021) and the third track (3023) and are connected to both the first track (3021) and the third track (3023), wherein the fourth track (3024) is located above the second track (3022); the plunger (402) can move in the first track (3021), the second track (3022), the third track (3023) and the fourth track (3024) in sequence.

3. The suturing device according to claim 2, characterized in that The second track-changing chute (5012) comprises a first channel (L1), a second channel (L2) and a third channel (L3) which are connected; when the plunger (402) moves from the first track (3021) to the second track (3022), the plunger (402) squeezes the lifting valve (501), and the rocker (502) enters the second channel (L2) from the first channel (L1); when the plunger (402) moves from the second track (3021) to the third track (3023), the plunger (402) and the lifting valve (501) are separated, and the rocker (502) is in the third track (3023). The plunger (402) moves from the third track (3023) to the fourth track (3024); the plunger (402) moves from the fourth track (3024) to the first track (3021); the plunger (402) moves along the first track (3021), squeezing the lifting valve (501), and the rocker (502) enters the third channel (L3); the plunger (402) moves upward along the first track (3021), and the rocker (502) enters the first channel (L1) along the third channel (L3), which constitutes one cycle.

4. The suturing device according to claim 1, characterized in that The suture needle (701) and the needle head (702) are matched in a manner of a snap connection, a thread connection, and a cam connection; one end of the suture thread (703) is fixed to the side wall of the needle head (702).

5. The suturing device according to claim 1, characterized in that It also includes a guide member (800) disposed in the puncture tube (304), wherein the guide member (800) opens a suture needle channel, and the suture needle (701) and the needle head (702) pass through the suture needle channel and are inserted into the needle storage tank.

6. The suturing device according to claim 5, characterized in that: One end of the guide member (800) is provided with a suture needle inlet (803), and the outer wall of the guide member (800) is provided with a suture needle outlet (804). The center of the suture needle inlet (803) and the center of the suture needle outlet (804) are not in the same straight line, and the connection between the suture needle inlet (803) and the suture needle outlet (804) forms the suture needle channel.

7. The suturing device according to claim 5, characterized in that It also includes a knob assembly for pulling the second needle seat (604), the knob assembly includes an axially movable element (602) arranged in the operating shell and a rotating operating element (601) threadedly connected to the axially movable element (602), the axially movable element (602) connects the connecting wire (603) and the puncture needle (605), the connecting wire (603) and the puncture needle (605) both pass through the guide member (800), and one end of the connecting wire (603) is fixedly connected to the second needle seat (604).

8. The suturing device according to claim 1, characterized in that It also includes a fixing flap (901) and a guide ring (902) sleeved on the puncture tube (304), and the fixing flap (901) can be opened at one end close to the guide ring (902) to form a match with the second needle seat (604).

9. The suturing device according to claim 1, characterized in that The main body comprises a button (101) and a spiral handle (102), and the spiral handle (102) is respectively connected to the button (101) and the spiral portion (103).

10. A method for operating a suturing device, characterized in that: The following steps are involved: S1. Press the button assembly (100), the plunger (402) and the rocker (502) are in the first motion state, and the suture needle (701) and the needle head (702) are inserted into the needle storage slot of the second needle seat (604); S2. Continue to press the button assembly (100), the plunger (402) and the rocker (502) are in the second motion state, the suture needle (701) rotates, and the needle (702) does not rotate in the needle storage tank; release the button assembly (100), the suture needle (701) and the needle (702) are separated and the suture needle (701) retracts, and the needle (702) remains in the second needle seat (604); S3. Press the button assembly (100) again, and the suture needle (701) enters the second needle seat (604) again to connect with the needle head (702); release the button assembly (100), and the suture needle (701) drives the needle head (702) to separate from the second needle seat (604); Repeat steps S1-S3 until suturing is achieved.

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