A laparoscope one-way sliding knot tying method and laparoscope one-way sliding knot

Abstract

The present invention discloses a laparoscope one-way sliding knot tying method, which belongs to the field of knotting methods. The laparoscope one-way sliding knot tying method is implemented according to the following steps: outside the cavity, a segment sliding line is used to tie at least one forward sliding knot with the shaft segment sliding line as the central axis. Outside the cavity, a segment sliding line is used to tie at least one reverse locking knot with the shaft segment sliding line as the central axis. The forward sliding knot and the reverse locking knot form a one-way sliding knot, and a wire clamp is used to clamp the tail of the segment sliding line to push the one-way sliding knot from the outside of the cavity to the opening to be sutured inside the cavity, until the segment sliding line is wrapped around the opening to be sutured and is locked by the one-way sliding knot. The present invention also discloses a laparoscope one-way sliding knot used for the above method. The laparoscope one-way sliding knot tying method disclosed by the present invention can not only effectively ensure that the suture opening is tightened and the knot will not loosen, but also effectively shorten the knotting time, thereby shortening the operation time, and this knotting method is also easy for novice doctors to use.

Description

Technical Field

[0001] The present invention relates to the field of knotting methods, and in particular to a laparoscope one-way sliding knot tying method and a laparoscope one-way sliding knot used in the above-mentioned knotting method. Background Art

[0002] Compared with traditional surgery, laparoscopic surgery often has the advantages of smaller incisions and less pain for patients. Laparoscopic surgery usually uses a keyhole-sized incision, and surgeons can insert tiny light sources, cameras, and surgical instruments. The images transmitted to the monitor guide the operation of surgical instruments to perform the operation. Laparoscopic surgery is limited by space and freedom, so it is very difficult to tie knots when suturing the wound. It requires the doctor to have rich experience, and knotting also takes a long time, which poses a hidden danger to the patient's life and health. Although hospitals use spatial thinking and devilish training, many novice doctors still find it difficult to master laparoscopic knotting techniques.

[0003] For example, when performing congenital diaphragmatic hernia surgery on infants and young children under thoracoscopy, it is generally necessary to use 4-0 or 3-0 non-absorbable sutures for intermittent sutures. To prevent the knot from loosening, at least 5 knots should be tied for each suture to ensure that the knot is not easy to loosen. At present, there are two commonly used knotting methods in clinical practice: the first method is intracorporeal knotting, and each knot is tied under laparoscope using laparoscopic instruments. In this knotting method, each knot needs to be tied under the internal cavity of the human body, which is cumbersome and time-consuming. At the same time, when tying the first knot, due to the tension of the suture, it is difficult to tie the first knot firmly, and the other knots are only to lock the first knot. Therefore, after the first knot is loosened, even if the other knots lock the first knot, the suture mouth cannot be sutured tightly, which may cause the suture mouth to not heal well and the disease often relapses; the second method is to tie the knot in vitro, and after the sliding line passes through the suture mouth, the two ends of the sliding line are pulled out of the sleeve (Trocar) to the outside of the human body, and after tying a knot in vitro, the knot is pushed into the suture mouth by a knot pusher, and multiple knots are tied, and the corresponding knots are pushed into the suture mouth one by one for multiple times. This method not only cannot solve the problem that the first knot is difficult to tie, but also it is difficult to ensure that each knot can be tied. If a single knot is not tight, it is difficult to ensure that the suture mouth can be sutured by the overall knot, and the operation is also cumbersome and time-consuming. In addition, when using the above two knotting methods, the whole operation often takes 2-3 hours, and the excessive operation time may also cause the child to be prone to unstable vital signs during the operation.

[0004] Chinese patent document CN103845091A discloses a group of surgical slidable knot tying methods, which mainly consist of a column line formed at one end of a suture and one or more surgical knots formed around the column line at the other end, and the number of circles around the axis of the basic knot can be increased before tying the knot to increase the locking property of the sliding knot, the number of circles around the two ends of the basic knot can be increased to increase the locking property of the sliding knot, and the number of basic knots can be increased to increase the locking property of the sliding knot. This knotting method only mentions that the locking property of the surgical knot can be enhanced by adding multiple knots, but it still cannot overcome the disadvantages of difficulty in tying knots in the body, the first knot is easy to loosen, and the knotting takes a long time. Summary of the invention

[0005] In order to overcome the defects of the prior art, the technical problem to be solved by the present invention is to propose a laparoscopic one-way sliding knot tying method, which can not only effectively ensure that the suture is tightened and the knot will not loosen, but also effectively shorten the knotting time, thereby shortening the operation time, and this knotting method is easy for novice doctors to use.

[0006] The technical problem to be solved by the present invention is to provide a laparoscope one-way sliding knot, which can only be gradually locked and cannot be reversed, thereby effectively preventing the laparoscope one-way sliding knot from loosening.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] The present invention provides a laparoscope one-way sliding knot tying method, which is implemented according to the following steps:

[0009] Outside the cavity, at least one positive sliding knot is tied around the segment sliding line with the shaft segment sliding line as the central axis.

[0010] Outside the cavity, at least one reverse locking knot is tied around the segment sliding line with the shaft segment sliding line as the central axis.

[0011] The forward sliding knot and the reverse locking structure form a one-way sliding knot. The tail of the winding sliding wire is clamped by a wire clamp and the one-way sliding knot is pushed from the outside of the cavity to the opening to be sutured inside the cavity until the knotted sliding wire covers the opening to be sutured and is locked by the one-way sliding knot.

[0012] Inside the cavity, at least one locking knot is tied on the one-way sliding knot at the opening to be sutured by using the shaft segment sliding wire and the winding segment sliding wire.

[0013] According to a further technical solution provided by the present invention, the shaft segment sliding wire, the knot segment sliding wire and the winding segment sliding wire are composed of one sliding wire.

[0014] A further technical solution provided by the present invention further comprises the following steps before tying the forward sliding knot:

[0015] The cannula is inserted into the cavity until the cannula is close to the opening to be sutured inside the cavity.

[0016] Insert the first end of the sliding wire located outside the cavity into the wire guide hole of the sleeve until the first end of the sliding wire is close to the opening to be sutured.

[0017] Pass the first end of the slide line through the left and right walls of the opening to be sutured.

[0018] Continue to pull the first end of the slide wire so that the first end of the slide wire passes through the lead hole until the first end of the slide wire is pulled back to the outside of the cavity.

[0019] According to a further technical solution provided by the present invention, the steps of tying the forward sliding knot are as follows:

[0020] One end of the shaft segment sliding wire is fixed so that the shaft segment sliding wire is straightened.

[0021] The winding segment sliding line and the shaft segment sliding line are crossed in a positive direction.

[0022] The winding segment sliding wire goes around the shaft segment sliding wire once and passes through the intersection.

[0023] Finish tying the forward sliding knot.

[0024] According to a further technical solution provided by the present invention, the steps of tying the reverse locking knot are as follows:

[0025] Complete the forward sliding knot to keep the shaft segment sliding line in a straightened state.

[0026] The winding segment sliding line and the shaft segment sliding line are crossed in opposite directions.

[0027] The winding segment sliding wire winds around the shaft segment sliding wire for half a circle and passes through the cross circular hole.

[0028] Tighten the winding segment sliding line to complete the reverse locking knot tying.

[0029] According to a further technical solution provided by the present invention, the steps of tying the locking knot are as follows:

[0030] The one-way sliding knot locks the opening to be sutured.

[0031] Any one of the winding segment sliding wire or the shaft segment sliding wire is crossed with itself to form a crossing circle, and the other one of the winding segment sliding wire or the shaft segment sliding wire is passed through the crossing circle.

[0032] Finish tying the locking knot.

[0033] The present invention provides a further technical solution, that is, outside the cavity, the winding segment slide line is used to tie three forward sliding knots with the shaft segment slide line as the central axis, and outside the cavity, the winding segment slide line is used to tie two reverse locking knots with the shaft segment slide line as the central axis, and inside the cavity, two locking knots are tied on the one-way sliding at the mouth to be sutured by the shaft segment slide line and the winding segment slide line.

[0034] According to a further technical solution provided by the present invention, a suture needle is provided at the end of the sliding thread, and one end of the suture needle is fixedly connected to the end of the sliding thread.

[0035] The present invention also provides a laparoscope one-way sliding knot used in the above-mentioned laparoscope one-way sliding knot tying method, comprising a one-way sliding knot that can be moved from the outside of the cavity to the inside of the cavity, a loop and a locking knot.

[0036] The two end thread ends of the ring are connected to the first thread end and the second thread end of the one-way sliding knot.

[0037] The two end thread ends of the locking knot are connected with the third thread end and the fourth thread end of the one-way sliding knot.

[0038] The present invention provides a further technical solution, wherein the one-way sliding knot includes at least one forward sliding knot and at least one reverse locking knot, the two connected forward sliding knots are connected end to end, the two connected reverse locking knots are connected end to end, the first reverse locking knot is connected to the last forward sliding knot, the reverse locking knot is used to prevent the forward sliding knot from moving in the reverse direction, the first locking knot is connected to the last reverse locking knot, and the locking knot is used to lock the one-way sliding knot to prevent the one-way sliding knot from loosening.

[0039] The beneficial effects of the present invention are:

[0040] The laparoscope one-way sliding knot tying method provided by the present invention forms a one-way sliding knot that can only move in one direction through the cooperation of a forward sliding knot and a reverse locking knot. The one-way sliding knot will cause the circumference of the knot segment sliding line to be continuously shortened, and finally completely bind the to-be-sutured opening. Due to its unidirectionality, it will not loosen again after tightening, thus overcoming the problem that the first knot in the prior art is easy to loosen. The one-way sliding knot is pushed from the outside of the cavity to the inside of the cavity. The difficulty of knotting outside is not the same as that of knotting under laparoscope, which can be said to be extremely easy. Moreover, the one-way sliding knot itself includes multiple forward sliding knots and reverse locking knots, that is, the knotting of multiple knots can be completed outside the cavity, which greatly shortens the operation time. Multiple forward sliding knots and reverse locking knots are pushed into the interior of the cavity at one time, and the work of tying multiple knots at the to-be-sutured opening can be quickly completed. In addition, in order to further ensure the stability of the one-way sliding knot, at least one locking knot is tied on the one-way sliding inside the cavity, and the locking knot can well lock the one-way sliding knot to prevent the one-way sliding knot itself from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a flow chart of a laparoscope one-way sliding knot tying method provided in a specific embodiment of the present invention;

[0042] Figure 2 It is a structural diagram of a laparoscope one-way sliding knot provided in a specific embodiment of the present invention, without a one-way sliding knot;

[0043] Figure 3 It is a structural diagram of a laparoscope one-way sliding knot provided in a specific embodiment of the present invention, which has a one-way sliding knot;

[0044] Figure 4 is a schematic structural diagram of a forward sliding knot provided in a specific embodiment of the present invention;

[0045] Figure 5 is a schematic diagram of the structure of a reverse locking knot provided in a specific embodiment of the present invention;

[0046] Figure 6 It is a schematic diagram of the structure of the locking knot provided in a specific embodiment of the present invention.

[0047] In the figure:

[0048] 1. Sleeve; 11. Guide hole; 2. Cavity; 3. Suture opening; 4. Slide line; 41. First end; 42. Second end; 5. Suture needle; 43. Shaft segment slide line; 44. Wrap segment slide line; 46. One-way slide knot; 45. Knot segment slide line; 461. Forward slide knot; 462. Reverse locking knot; 47. Locking knot; 48. Intersection; 49. Intersection hole; 50. Intersection circle. DETAILED DESCRIPTION

[0049] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0050] Embodiment 1

[0051] like Figure 1 As shown, the laparoscope one-way sliding knot tying method provided in this embodiment is implemented according to the following steps:

[0052] S00 step: Figure 2As shown, the sleeve 1 (Trocar) is inserted into the cavity 2 until the sleeve 1 is close to the opening to be sutured 3 inside the cavity 2. The sleeve 1 is close to the opening to be sutured 3, so that the sliding line 4 can be introduced from the sleeve 1 to the opening to be sutured 3, so as to suture and knot the opening to be sutured 3. Cavity 2 refers to an object that is sealed and isolated from the outside and hollow inside. The opening to be sutured 3 is located inside the cavity 2. The laparoscopic one-way sliding knot knotting method provided in this embodiment is suitable for suturing the opening to be sutured 3 inside the cavity 2, especially for suture knotting in interrupted sutures in congenital diaphragmatic hernia surgery. However, the laparoscopic one-way sliding knot knotting method provided in this embodiment is not limited to a specific type of surgery, but is suitable for any related situation in which the opening to be sutured 3 inside the cavity 2 needs to be sutured from the outside in a narrow space, and is especially suitable for laparoscopic surgery, thereby solving the problem of difficult sutures inside the cavity 2.

[0053] Step S10: insert the first end 41 of a sliding wire 4 located outside the cavity 2 into the lead hole 11 of the sleeve 1 until the first end 41 of the sliding wire 4 approaches the opening 3 to be sutured. The two ends of a sliding wire 4 are the first end 41 and the second end 42. At the beginning, the first end 41 and the second end 42 are both outside the cavity 2. When the first end 41 is inserted into the cavity 2, the second end 42 remains outside the cavity 2. Each laparoscope one-way sliding knot only needs one sliding wire 4 to complete the knotting. The sleeve 1 can facilitate the first end 41 of the sliding wire 4 to approach the opening 3 to be sutured, so as to suture the opening 3 to be sutured.

[0054] The first end 41 of the sliding thread 4 is passed through the left and right walls of the opening 3 to be stitched. When sewing a gap, it is usually necessary to pass through the left and right walls of the opening 3 to be stitched, similar to sewing a hole or a slit in a garment. Preferably, a suture needle 5 is provided at the end of the sliding thread 4 in a curved hook shape, one end of the suture needle 5 is fixedly connected to the end of the sliding thread 4, and the suture needle 5 can be conveniently passed through the left and right walls of the opening 3 to be stitched. After the sliding thread 4 is tightened, the opening 3 to be stitched is closed, thereby completing the stitching of the opening 3 to be stitched.

[0055] Step S20: Continue to pull the first end 41 of the sliding wire 4, so that the first end 41 of the sliding wire 4 passes through the lead hole 11 again, until the first end 41 of the sliding wire 4 is pulled back to the outside of the cavity 2. Combining steps S00 to S20, it can be seen that a sliding wire 4 is passed from the outside of the cavity 2 through the lead hole 11 to the inside of the cavity 2, and then passes through the left and right walls of the opening 3 to be sutured, and then passes back through the lead hole 11, that is, from the inside of the cavity 2 to the outside, thus completing the preparation work before knotting. At this time, the sliding wire 4 only passes through the side wall of the opening 3 to be sutured, and has not yet tied a knot, which is inconsistent with the method of tying a knot inside the cavity 2 in the prior art, and its main knotting work is completed outside the cavity.

[0056] In order to facilitate the description of the knotting process below, different parts of a slide line 4 are named differently to distinguish and explain the knotting process. Before knotting, the section of the slide line 4 from the first end 41 of the slide line 4 to the opening 3 to be sutured is called the shaft section slide line 43, and the section of the slide line 4 from the second end 42 of the slide line 4 to the opening 3 to be sutured is called the winding section slide line 44. Vice versa, that is, the section of the slide line 4 from the first end 41 of the slide line 4 to the opening 3 to be sutured can be called the winding section slide line 44, and the section of the slide line 4 from the second end 42 of the slide line 4 to the opening 3 to be sutured can be called the shaft section slide line 43. After knotting, that is, after the above-mentioned slide line 4 has completed the knotting of the one-way sliding knot 46, due to the addition of the one-way sliding knot 46, it is necessary to rename the sections of the slide line 4, also to distinguish and explain the knotting process. At this time, the section of the sliding line 4 from the first end 41 of the sliding line 4 to the one-way sliding knot 46 is called the shaft section sliding line 43, the section of the sliding line 4 from the second end 42 of the sliding line 4 to the one-way sliding knot 46 is called the winding section sliding line 44, and the other side of the one-way sliding knot 46 that is sleeved on the circle of the mouth to be sutured 3 is called the knot section sliding line 45. The same is also true vice versa, that is, the naming of the shaft section sliding line 43 and the winding section sliding line 44 can be interchanged. However, it is worth noting that the subsequent naming rules should be consistent with the naming rules before the knot is tied. For example: after defining the section of the sliding line 4 from the first end 41 of the sliding line 4 to the mouth to be sutured 3 as the winding section sliding line 44, the section of the sliding line 4 from the second end 42 of the sliding line 4 to the mouth to be sutured 3 cannot be called the winding section sliding line 44 in the subsequent renaming. It can be seen that the shaft segment slide wire 43, the knot segment slide wire 45 and the winding segment slide wire 44 are composed of a slide wire 4. In the following text, each segment of the slide wire 4 is named according to the above rules only for the convenience of explanation and to distinguish the different roles and functions of each segment of the slide wire 4.

[0057] Step S30: Figure 3 , Figure 4As shown, outside the cavity 2, the winding segment slide line 44 is tied with at least one positive sliding knot 461 with the shaft segment slide line 43 as the central axis. The specific knotting method of the positive sliding knot 461 can be seen below and in the accompanying drawings. The function of the positive sliding knot 461 is to constitute the sliding body of the one-way sliding knot 46, so that the one-way sliding knot 46 can slide along the shaft segment slide line 43. The winding segment slide line 44 and the shaft segment slide line 43 are interchangeable. As mentioned above, whether the positive sliding knot 461 is wound to the left or to the right has no effect on the formation of the one-way sliding knot 46, but the winding direction of the positive sliding knot 461 needs to be opposite to the reverse locking knot 462. Preferably, the number of positive sliding knots 461 is at least two. One positive sliding knot 461 has a small contact surface and is easy to get stuck, while if there are more than two, the probability of getting stuck is much smaller. Through many experiments and summaries, it is further preferred that the optimal number of positive sliding knots 461 is three. Too many positive sliding knots 461 are unnecessary, which prolong the knotting time and increase the friction force to reduce the sliding effect. Too few positive sliding knots 461 make it difficult to ensure the firmness of the one-way sliding knot 46 and the stability of movement.

[0058] Step S40: Figure 3 , Figure 5 As shown, outside the cavity 2, the winding segment sliding wire 44 is tied with at least one reverse locking knot 462 with the shaft segment sliding wire 43 as the central axis. The specific knotting method of the reverse locking knot 462 can be seen below and in the attached drawings. The function of the reverse locking knot 462 is to prevent the reverse movement of the one-way sliding knot 46 after being used in conjunction with the forward sliding knot 461. At the same time, the forward sliding knot 461 is a loose knot, which will not be loosened unless it is locked by the reverse locking knot 462. The inability to move in the reverse direction allows the length of the knot segment sliding wire 45 of the one-way sliding knot 46 to be continuously reduced, but cannot be expanded, thereby effectively overcoming the problem that the first knot in the prior art is easy to loosen. The one-way sliding knot 46 is pushed from the outside of the cavity 2 to the inside of the cavity 2. The difficulty of knotting outside is not the same as that of knotting under laparoscope. It can be said to be extremely easy. Knotting outside the cavity 2 is like tying a knot by hand. Knotting inside the cavity is done by observing the medical display and tying the knot through the cannula with the assistance of the medical display. Moreover, the one-way sliding knot 46 itself includes multiple forward sliding knots 461 and reverse locking knots 462, that is, multiple knots can be tied outside the cavity 2, which greatly shortens the knotting time, thereby shortening the laparoscopic surgery time and improving the cure probability. Preferably, the number of reverse locking knots 462 is two. Too many reverse locking knots 462 will also have a certain impact on the sliding of the forward sliding knot 461. If only a single reverse locking knot 462 is set, the reverse locking effect will be weak.

[0059] Step S50: Figure 3As shown, the one-way sliding knot 46 is composed of a forward sliding knot 461 and a reverse locking knot 462. The one-way sliding knot 46 can move along the shaft segment sliding wire 43. The one-way sliding knot 46 is pushed from the outside of the cavity 2 to the opening 3 to be sutured inside the cavity 2 by clamping the tail of the winding segment sliding wire 44 with a wire clamp, until the knot segment sliding wire 45 covers the opening 3 to be sutured and is locked by the one-way sliding knot 46. Preferably, the wire clamp can be a medical tweezers, a needle holder or a knot pusher, etc. The wire clamp can complete the work of pushing the one-way sliding knot 46 from the outside of the cavity 2 to the inside of the cavity 2. Since the one-way sliding knot 46 can only move in one direction, the opening 3 to be sutured will only be gradually tightened and will not be loosened, which overcomes the problem that the first knot in the prior art is easy to loosen. The one-way sliding knot 46 includes multiple forward sliding knots 461 and reverse locking knots 462. Multiple forward sliding knots 461 and reverse locking knots 462 are pushed into the interior of the cavity 2 at one time, and the work of tying multiple one-way knots at the location of the suture opening 3 is immediately completed, which greatly improves the knotting efficiency.

[0060] S60 step: Figure 3 , Figure 6 As shown, after the one-way sliding knot 46 moves into the cavity 2 and locks the opening 3 to be sutured, at least one locking knot 47 is tied on the one-way sliding knot 46 at the opening 3 to be sutured inside the cavity 2 through the shaft segment sliding line 43 and the winding segment sliding line 44. The specific knotting method of the locking knot 47 can be seen below and in the accompanying drawings. The function of the locking knot 47 is to prevent the one-way sliding knot 46 from loosening. Tying at least one locking knot 47 on the one-way sliding knot 46 can further enhance the locking ability of the one-way sliding knot 46. After the one-way sliding knot 46 moves to the working position, the locking knot 47 locks the working position of the one-way sliding knot 46.

[0061] Embodiment 2

[0062] like Figure 4 As shown, the laparoscope one-way sliding knot tying method provided in this embodiment is implemented according to the above steps S00 to S70. The further technical solution of the second embodiment compared with the first embodiment is:

[0063] The steps for tying a forward slip knot 461 are as follows:

[0064] Step S010: fix one end of the shaft segment sliding wire 43 so that the shaft segment sliding wire 43 is straightened. There are many ways to straighten it, and it can be straightened by hand or with a special wire pulling tool, such as medical tweezers, medical forceps or needle holders. Of course, it is also possible to tie the knot without straightening it. Straightening is only a preferred method to facilitate the winding step.

[0065] Step S011: The winding section slide wire 44 and the shaft section slide wire 43 are crossed in a positive direction. At this time, the positive crossing only refers to a certain specific direction, which does not mean that the crossing up and down is the positive direction, or the crossing left and right is the positive direction, that is, the winding section slide wire 44 and the shaft section slide wire 43 are crossed. However, the positive crossing is opposite to the reverse crossing direction of the reverse locking knot 462, that is, this positive crossing is relative to the reverse crossing.

[0066] Step S012: The segment sliding wire 44 is wound around the shaft segment sliding wire 43 for one circle and passes through the intersection 48. At this time, each circle is completed to tie a knot of the forward sliding knot 461. For example, three circles are tied to tie three forward sliding knots 461. If the forward sliding knot 461 is wound too little, it is easy to get stuck. If the forward sliding knot 461 is wound too much, the sliding effect is poor. After many tests, it is most appropriate to wrap the forward sliding knot 461 three times.

[0067] Step S013: Finish tying the forward sliding knot 461. After the circle is completed, the forward sliding knot 461 is also finished, but at this time the forward sliding knot 461 is still in a loose state and needs to be locked with the reverse locking knot 462 to form a one-way sliding knot 46 that moves along the shaft section sliding line 43. The forward sliding knot 461 is mainly used to form a wire loop that moves along the shaft section sliding line 43 to facilitate the sliding of the one-way sliding knot 46.

[0068] Embodiment 3

[0069] like Figure 5 As shown, the laparoscope one-way sliding knot tying method provided in this embodiment is implemented according to the above steps S00 to S70. The further technical solution of the third embodiment compared with the first embodiment is:

[0070] The steps for tying a reverse locking knot 462 are as follows:

[0071] Step S020: complete the forward sliding knot 461, and keep the shaft section sliding line 43 in a straightened state. The straightened state is also for better winding, and it is not necessary to straighten it. The straightened state is a preferred method.

[0072] Step S021: reversely cross the winding section sliding wire 44 and the shaft section sliding wire 43. After reverse crossing, a cross-round hole 49 is formed for the end of the winding section sliding wire 44 to pass through. Reverse crossing is the opposite direction of forward crossing, and will not be repeated here.

[0073] Step S022: After the segment sliding wire 44 is wound around the shaft segment sliding wire 43 for half a circle, it passes through the cross circular hole 49. In the process of forming the reverse cross, half a circle has been wound, and another half circle is wound through the cross circular hole 49 to form a full circle, thereby locking the multiple positive sliding knots 461 provided in the first and second embodiments.

[0074] Step S023: tighten the winding segment sliding line 44 to complete the reverse locking knot 462.

[0075] Embodiment 4

[0076] like Figure 6 As shown, the laparoscope one-way sliding knot tying method provided in this embodiment is implemented according to the above steps S00 to S70. The further technical solution of the fourth embodiment compared with the first embodiment is:

[0077] The steps for tying a locking knot 47 are as follows:

[0078] Step S030: The one-way sliding knot 46 locks the opening to be sutured 3. In the process of pushing the one-way sliding knot 46 from the outside of the cavity 2 to the inside of the cavity 2, since the one-way sliding knot 46 can only move in one direction, the opening to be sutured 3 can only be gradually tightened, that is, the length of the knot segment sliding line 45 can only be continuously shortened until the circular knot segment sliding line 45 completely tightens the opening to be sutured 3, at which time the one-way sliding knot 46 has locked the opening to be sutured 3. The one-way nature of the one-way sliding knot 46 prevents it from loosening due to the tension of the opening to be sutured 3, that is, it overcomes the problem of the first knot being easily loosened in the prior art.

[0079] Step S031: any one of the winding section slide wire 44 or the shaft section slide wire 43 is crossed with itself to form a cross circle 50, and the other one of the winding section slide wire 44 or the shaft section slide wire 43 is passed through the cross circle 50. In short, any one of the winding section slide wire 44 or the shaft section slide wire 43 is crossed with itself to form a cross circle 50, and the other one of the sliding wire 4 is passed through the cross circle 50, and then tightened and knotted.

[0080] Step S032: Finish tying the locking knot 47. Tying at least one locking knot 47 on the one-way sliding knot 46 can further enhance the locking ability of the one-way sliding knot 46.

[0081] Embodiment 5

[0082] like Figures 1 to 6As shown, the laparoscope one-way sliding knot tying method provided in this embodiment is implemented according to the above steps S00 to S70. Compared with the embodiment 1, the further technical solution of the fifth embodiment is that: outside the cavity 2, the winding segment sliding line 44 is tied with the shaft segment sliding line 43 as the central axis to tie three positive sliding knots 461, outside the cavity 2, the winding segment sliding line 44 is tied with the shaft segment sliding line 43 as the central axis to tie two reverse locking knots 462, and inside the cavity 2, the shaft segment sliding line 43 and the winding segment sliding line 44 are tied on the one-way sliding at the to-be-sutured opening 3 to tie two locking knots 47. The optimal number of positive sliding knots 461 is three. One positive sliding knot 461 has a small contact surface and is easy to get stuck. Too many positive sliding knots 461 are unnecessary and prolong the knotting time unnecessarily. Too few positive sliding knots 461 are difficult to ensure the firmness of the knot and the stability of the movement of the one-way sliding knot 46. After many tests, it is found that tying three positive sliding knots 461 is the best effect under the condition of ensuring that the laparoscope one-way sliding knot does not loosen. The optimal number of reverse locking knots 462 is two. Too many reverse locking knots 462 will have a certain impact on the sliding of the forward sliding knot 461. If only a single reverse locking knot 462 is set, the reverse locking effect will be weak. After many tests, the optimal number of reverse locking knots 462 is two while ensuring good prevention of reverse movement of the one-way sliding knot 46. The optimal number of locking knots 47 is two. After many tests, tying a locking knot 47 also has a locking effect, but a locking knot 47 itself is prone to loosening under the action of external force. On this basis, tying another locking knot 47 can further fix the previous locking knot 47, greatly reducing the possibility of loosening of the one-way sliding knot 46. In summary, the laparoscope one-way sliding knot tying method provided in the present application requires a total of seven knots, five of which are tied at one time outside the cavity 2, and two knots are tied inside the cavity 2. Since the knots are tied outside the cavity 2 and pushed into the interior of the cavity 2 at one time, multiple knots are formed inside the cavity, which greatly shortens the knotting time inside the cavity.

[0083] Embodiment 6

[0084] like Figures 1 to 6 As shown, a laparoscope one-way sliding knot provided in this embodiment is used for the above-mentioned laparoscope one-way sliding knot tying method.

[0085] like Figure 6 As shown, the laparoscope one-way sliding knot includes a one-way sliding knot 46 that can be moved from the outside of the cavity 2 to the inside of the cavity 2, a ring and a locking knot 47, the two ends of the ring are connected to the first and second ends of the one-way sliding knot 46, and the two ends of the locking knot 47 are connected to the third and fourth ends of the one-way sliding knot 46. Among them, the ring is equivalent to the knot segment sliding line 45, which is used to cover the front suture port 3, and the one-way sliding knot 46 can only move in one direction, and will not be loosened after the suture port 3 is tightened.

[0086] Furthermore, the one-way sliding knot 46 includes at least one forward sliding knot 461 and at least one reverse locking knot 462. The two connected forward sliding knots 461 are connected end to end, and the two connected reverse locking knots 462 are connected end to end. The first reverse locking knot 462 is connected to the last forward sliding knot 461. The forward sliding knot 461 is used to maintain the forward sliding of the one-way sliding knot 46, and the reverse locking knot 462 is used to prevent the forward sliding knot 461 from moving in the reverse direction. The first locking knot 47 is connected to the last reverse locking knot 462. When the one-way sliding knot 46 slides to the extreme position, that is, the loop is tightened until the loop completely covers the opening 3 to be sutured, and the opening 3 to be sutured has no gap or almost no gap. The locking knot 47 is used to lock the one-way sliding knot 46 to prevent the one-way sliding knot 46 from loosening.

[0087] The present invention is described by preferred embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited to the specific embodiments disclosed herein, and other embodiments falling within the claims of this application are within the scope of protection of the present invention.

Claims

1. A laparoscope one-way sliding knot, used in a laparoscope one-way sliding knot tying method, characterized in that: Including one-way sliding knots, loops and locking knots that can be moved from the outside of the cavity to the inside of the cavity; The two end thread ends of the ring are connected to the first thread end and the second thread end of the one-way sliding knot; The two end thread ends of the locking knot are connected to the third thread end and the fourth thread end of the one-way sliding knot; The one-way sliding knot includes at least one forward sliding knot and at least one reverse locking knot; The two connected positive sliding knots are connected end to end; The two connected reverse lock knots are connected end to end; The first reverse locking knot is connected to the last forward sliding knot; The first locking knot is connected to the last reverse locking knot; The shaft-segment sliding wire, the knot-segment sliding wire and the winding-segment sliding wire are composed of one sliding wire; The collar is equivalent to a knotted sliding line; The number of the forward sliding knots is three; The number of the reverse locking knots is two; The steps of tying the forward sliding knot are as follows: Fixing one end of the shaft segment sliding wire so that the shaft segment sliding wire is straightened; Crossing the winding section sliding line with the shaft section sliding line in a positive direction; The winding section sliding wire goes around the shaft section sliding wire once and passes through the intersection; Finish tying the forward sliding knot; The steps of tying the reverse locking knot are as follows: Complete the forward sliding knot to keep the shaft segment sliding line in a straightened state; Crossing the winding section sliding line and the shaft section sliding line in opposite directions; The winding segment sliding wire is wound around the shaft segment sliding wire for half a circle and passes through the cross circular hole; Tightening the winding segment sliding wire to complete the reverse locking knot tying; The steps of tying the locking knot are as follows: Cross any one of the winding segment sliding line or the shaft segment sliding line with itself to form a crossing circle, and pass the other one of the winding segment sliding line or the shaft segment sliding line through the crossing circle; Finish tying the locking knot.

Images