Endoscopic automatic continuous suturing device

Abstract

The present invention discloses an endoscopic automatic continuous suturing device, which includes an endoscopic tube. A suturing mechanism for closing a break is installed at the distal end of the endoscopic tube. A traction mechanism for pulling the tissue around the break into the operation range of the suturing mechanism is also disposed through the endoscopic tube. By arranging the traction mechanism in the endoscopic tube, the present invention can first pull and fix the tissue around the break to be sutured. During the pulling process, the break can be merged, and the tissues on the opposite sides of the break can be made to approach or even fit together. Since the tissues to be sutured are already relatively close, a sewing needle can be used to pass through the double-layer tissues at one time for suturing. Compared with the prior art, the present invention can effectively improve the suturing efficiency, shorten the operation time, and thus relieve the pain of the patient.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of medical devices, and particularly relates to an endoscopic automatic continuous suturing device. Background Art

[0002] With the development of endoscopic technology and the rise of natural orifice transluminal endoscopic surgery (NOTES), the scope of use of endoscopes has become increasingly wide. The existing endoscopic suturing devices are unable to pull the tissue to be sutured, resulting in excessive difficulty in suturing operations, further leading to a decline in suturing quality and an increase in the operation time, causing great pain to patients. Therefore, there is an urgent need for a suturing device with a function of pulling the tissue to be sutured to cooperate with suturing. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an endoscopic automatic continuous suturing device with a function of pulling the tissue to be sutured.

[0004] To solve the above technical problem, the present invention adopts the following technical solutions:

[0005] An endoscopic automatic continuous suturing device includes an endoscopic tube, and a suturing mechanism for closing a break is installed at the distal end of the endoscopic tube. A traction mechanism for pulling the tissue around the break into the operation range of the suturing mechanism is also disposed through the endoscopic tube.

[0006] As a further improvement of the above technical solution:

[0007] The traction mechanism includes a traction sleeve fixedly disposed through the endoscopic tube along the length direction of the endoscopic tube, and at least two rigid traction cables that can be independently telescoped and rotated are disposed through the traction sleeve for connecting and pulling the tissue around the break.

[0008] The distal end of the traction cable is spiral, and the spiral end is sharp.

[0009] The suturing mechanism includes a needle bar and a rotary shuttle disposed oppositely on the inner wall of the distal end of the endoscopic tube; the needle bar pulls the upper thread to pass through the tissue on the opposite side of the break from top to bottom; when the needle bar penetrates the tissue, the rotary shuttle pulls the bottom thread to capture the upper thread loop formed under the tissue by the tip of the shuttle, and forms a stitch on the tissue by rotating and intertwining the bottom thread.

[0010] One end of the needle bar is hinged, and the other end swings reciprocally towards the rotary shuttle; the active end of the needle bar is an arc bent towards the rotary shuttle, and the arc end is sharp.

[0011] The needle bar swings electrically.

[0012] The suturing mechanism further includes an elastic member for pulling the needle bar to swing towards / away from the rotary shuttle, and an electromagnet for pulling the needle bar to swing in the reverse direction.

[0013] Both the middle part and the movable end of the pendulum needle are formed with thread holes for threading the surface thread.

[0014] The rotating shuttle is driven to rotate electrically.

[0015] The suture mechanism further includes two suture winding devices disposed in the endoscope tube, one of which winds the surface thread and the other winds the bottom thread.

[0016] Compared with the prior art, the advantages of the present invention are as follows:

[0017] By providing a traction mechanism, it can be connected to the surrounding tissues of the to-be-sutured break (such as tissue breaks formed by digestive tract defects and perforations) before suturing, and the break can be moved into the operation range of the suture mechanism in the form of pulling, so that the suture mechanism can perform suture operations. The prior art does not have a traction function. Usually, the suture needle can only be first passed through the tissue on one side of the break, and then the tip direction of the needle is reversed to pass through the tissue on the opposite side. This operation method is difficult, inefficient, and the suture effect is not good. In contrast, by providing a traction mechanism in the endoscope tube, the present invention can first pull and fix the surrounding tissues of the to-be-sutured break. During the pulling process, the break can be merged, and the tissues on the opposite side of the break can be made to approach or even fit together. Since the distance between the tissues to be sutured is already relatively close, the suture needle can be used to pass through the double-layer tissues at one time for suturing. Compared with the prior art, the present invention can effectively improve the suture efficiency, shorten the operation time, and thus reduce the pain of the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic cross-sectional structure diagram of the stapler;

[0019] Figure 2 is a schematic diagram of the suturing process of the stapler (State 1);

[0020] Figure 3 is a schematic diagram of the suturing process of the stapler (State 2);

[0021] Figure 4 is a schematic diagram of the suturing process of the stapler (State 3);

[0022] Figure 5 is a schematic diagram of the suturing process of the stapler (State 4);

[0023] Figure 6 is Figure 5 a partial enlarged schematic diagram at A in

[0024] The reference numerals in the figure denote: 1, endoscope tube; 2, suture mechanism; 21, oscillating needle; 211, thread hole; 22, rotary hook; 221, hook tip; 23, upper thread; 231, upper thread loop; 24, bobbin thread; 25, elastic member; 26, electromagnet; 27, suture winder; 3, traction mechanism; 31, traction sleeve; 32, traction cable. Detailed implementation manners

[0025] The present invention will be further described in detail below with reference to the accompanying drawings of the specification and specific embodiments.

[0026] As Figure 1 shown, the endoscopic automatic continuous suture device of this embodiment includes an endoscope tube 1. A suture mechanism 2 for closing the break is installed at the distal end of the endoscope tube 1. A traction mechanism 3 for pulling the surrounding tissue of the break into the operation range of the suture mechanism 2 is also disposed inside the endoscope tube 1. By providing the traction mechanism 3, connection can be made with the surrounding tissue of the break to be sutured (such as the tissue break formed by digestive tract defect and perforation) before suturing, and the break can be moved into the operation range of the suture mechanism 2 in a pulling manner, so that the suture mechanism can perform suture operations. The prior art does not have a traction function. Usually, the sewing needle can only be first passed through the tissue on one side of the break, and then the needle tip direction is reversed to pass through the tissue on the opposite side. This operation method is difficult, inefficient, and the suture effect is not good. In contrast, by providing the traction mechanism 3 inside the endoscope tube 1, the present invention can first pull and fix the surrounding tissue of the break to be sutured. During the pulling process, the break can be merged, and the tissues on the opposite sides of the break can be made to approach or even fit together. Since the tissues to be sutured are already relatively close, the sewing needle can be used to pass through the double-layer tissue at one time for suturing. Compared with the prior art, the present invention can effectively improve the suture efficiency, shorten the operation time, and thus relieve the pain of the patient.

[0027] For a clearer reflection of the suture process, Figures 2 to 6 is taken as an example to display each node of the suture.

[0028] First, please refer to Figure 2 , find the break to be sutured through the endoscope tube 1, and gradually approach its distal end to the break so that the break enters the working range of the traction mechanism 3.

[0029] Next, please refer to Figure 3, the doctor controls a pulling cable 32 at the proximal end of the endoscope tube 1 to move forward until it contacts the tissue around the rupture. Since the distal end of the pulling cable 32 is spiral and the end is sharp, the doctor manipulates the pulling cable 32 to press against the tissue and rotate. The sharp end of the pulling cable 32 pierces into the tissue, and under the rotation action, the spiral end of the pulling cable 32 gradually penetrates the tissue. Then, the doctor manipulates another pulling cable 32 in the same way so that its spiral end is connected to the tissue on the opposite side of the rupture. When there are three or more pulling cables 32, the above operation can be repeated to connect with the tissue around the rupture in turn.

[0030] Then please refer to Figure 4 , the doctor pulls the pulling cable 32 distally. Since the contact part of the pulling cable 32 with the tissue is spiral, during the pulling process, the spiral structure can effectively prevent the tissue from slipping off the pulling cable 32. During this process, the tissue around the rupture gradually enters the endoscope tube 1 and contracts inward until it enters the operation range of the suturing mechanism 2.

[0031] Finally, please refer to Figure 5 and Figure 6 , the doctor manipulates the oscillating needle 21 to flip and swing towards the rotating shuttle 22 in an electric control manner. The oscillating needle 21 pulls the surface thread 23 to pass through two layers of tissue in turn and then approaches the rotating shuttle 22. Then, the doctor manipulates the oscillating needle 21 to flip and swing in the reverse direction. During this process, the surface thread 23 loosens from the end of the oscillating needle 21 due to friction to form a surface thread loop 231. At this time, the rotating shuttle 22 drives the bobbin thread 24 to rotate, and the shuttle tip 221 catches and penetrates into the surface thread loop 231. The rotating shuttle 22 continues to rotate, driving the bobbin thread 24 to pass through the surface thread loop 231, and the surface thread 23 and the bobbin thread 24 are intertwined. After the oscillating needle 21 flips and swings away from the tissue in the reverse direction, it offsets a certain distance and punctures again, repeating the above process, so that new surface thread loops 231 can be repeatedly formed and the bobbin thread 24 can pass through in turn to form a lockstitch. Finally, by simply pulling both ends of the surface thread 23 to make it taut, the rupture can be tightened and the suture can be completed.

[0032] In this embodiment, the traction mechanism 3 includes a traction sleeve 31 fixedly inserted along the length direction of the endoscope tube 1, and at least two rigid pulling cables 32 that can be independently telescoped and rotated and are used to connect and pull the tissue around the rupture are inserted into the traction sleeve 31. By providing the traction sleeve 31, a passing space can be provided for the pulling cables 32 to avoid interference between the pulling cables 32 and other mechanisms inside the endoscope tube 1. Also, by providing multiple pulling cables 32, the tissue at different positions around the rupture can be connected and pulled respectively, so as to form a contraction effect.

[0033] In this embodiment, the distal end of the pulling cable 32 is spiral and the spiral end is sharp. During the pulling process along the length direction of the pulling cable 32, the tissue is not easily loosened from the spiral structure, so that a stable connection can be formed between the pulling cable 32 and the tissue after it penetrates into the tissue.

[0034] In this embodiment, the suture mechanism 2 includes a swinging needle 21 and a rotary shuttle 22 which are oppositely arranged on the inner wall of the distal end of the endoscope tube 1; the swinging needle 21 pulls the surface thread 23 to pass through the tissue on the opposite side of the break from top to bottom; when the swinging needle 21 penetrates the tissue, the rotary shuttle 22 pulls the bottom thread 24 to capture the surface thread loop 231 formed under the tissue by using the shuttle tip 221, and forms a stitch on the tissue by rotating and intertwining the bottom thread 24. By arranging the swinging needle 21 and the rotary shuttle 22, as described in the suture process description, the cooperation of the two can enable the surface thread 23 and the bottom thread 24 to be intertwined to form a stitch, thereby closing the break.

[0035] In this embodiment, one end of the swinging needle 21 is hinged and the other end swings reciprocally towards the rotary shuttle 22; the movable end of the swinging needle 21 is in an arc shape bent towards the rotary shuttle 22, and the arc-shaped end is sharp. By setting the movable end of the swinging needle 21 in an arc shape, it is possible to more conveniently puncture the tissue around the break and effectively reduce the wound formed during the puncture process.

[0036] In this embodiment, the swinging needle 21 swings electrically. The rotary shuttle 22 rotates electrically. Since the suture mechanism 2 is far from the doctor and cannot be directly controlled in a contact form, the two are set in an electrically driven form for easy control.

[0037] In this embodiment, the suture mechanism 2 further includes an elastic member 25 for pulling the swinging needle 21 to swing towards / away from the rotary shuttle 22, and an electromagnet 26 for pulling the swinging needle 21 to swing in the reverse direction. The elastic member 25 can transmit a thrust or a pulling force to the swinging needle 21 in a compressed or extended form, so as to control the movement of the swinging needle 21. At the same time, in order to enable the swinging needle 21 to swing back in the reverse direction, an electromagnet 26 is provided, and the magnetic attraction is changed by controlling the electromagnet 26, thereby controlling the movement of the swinging needle 21.

[0038] In this embodiment, thread holes 211 for passing the surface thread 23 are formed in both the middle and the movable end of the swinging needle 21. By providing the thread holes 211, the surface thread 23 can pass through them so that the surface thread 23 can move along with the swinging needle 21.

[0039] In this embodiment, the suture mechanism 2 further includes two suture winding devices 27 arranged in the endoscope tube 1, one of which winds the surface thread 23 and the other winds the bottom thread 24. By providing the suture winding devices 27, the swinging needle 21 and the rotary shuttle 22 can be continuously supplied with thread respectively to achieve continuous suturing.

[0040] Although the present invention has been disclosed above in preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes, without departing from the scope of the technical solution of the present invention. Therefore, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. An endoscopic automatic continuous suturing device, comprising an endoscopic tube (1), and a suturing mechanism (2) for closing a break is installed at the distal end of the endoscopic tube (1). Characterized in that: A traction mechanism (3) for pulling the tissue around the break into the operation range of the suturing mechanism (2) is also disposed inside the endoscopic tube (1); the traction mechanism (3) includes a traction sleeve (31) fixedly disposed inside the endoscopic tube (1) along the length direction thereof, and at least two rigid traction cables (32) that can be independently telescoped and rotated and are used for connecting and pulling the tissue around the break are disposed inside the traction sleeve (31); the distal end of the traction cable (32) is spiral, and the spiral end is sharp. During the rotation of the traction cable (32), its spiral end can gradually penetrate the tissue.

2. The endoscopic automatic continuous suturing device according to claim 1, Characterized in that: The suturing mechanism (2) includes a swing needle (21) and a rotary shuttle (22) oppositely disposed on the inner wall of the distal end of the endoscopic tube (1); the traction surface thread (23) of the swing needle (21) passes through the tissue on the opposite side of the break from top to bottom; when the swing needle (21) penetrates the tissue, the rotary shuttle (22) uses the shuttle tip (221) to capture the surface thread loop (231) formed under the tissue and forms a stitch on the tissue by rotating and interweaving the bottom thread (24).

3. The endoscopic automatic continuous suturing device according to claim 2, Characterized in that: One end of the swing needle (21) is hinged and the other end reciprocates towards the rotary shuttle (22); the movable end of the swing needle (21) is in an arc shape bent towards the rotary shuttle (22), and the arc end is sharp.

4. The endoscopic automatic continuous suturing device according to claim 3, Characterized in that: The swing needle (21) is driven to swing electrically.

5. The endoscopic automatic continuous suturing device according to claim 4, Characterized in that: The suturing mechanism (2) further includes an elastic member (25) for pulling the swing needle (21) to swing towards / away from the rotary shuttle (22), and an electromagnet (26) for pulling the swing needle (21) to swing in the reverse direction.

6. The endoscopic automatic continuous suturing device according to claim 2, Characterized in that: Thread holes (211) for passing the surface thread (23) are formed in the middle and the movable end of the swing needle (21).

7. The endoscopic automatic continuous suturing device according to claim 2, Characterized in that: The rotary shuttle (22) is driven to rotate electrically.

8. The endoscopic automatic continuous suturing device according to any one of claims 2-7, Characterized in that: The suturing mechanism (2) further includes two suture winding devices (27) disposed inside the endoscopic tube (1), one of which winds the surface thread (23) and the other winds the bottom thread (24).

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