Laparoscopic surgery suture knotter

Abstract

The present invention provides a knotter for laparoscopic suture, which belongs to the field of laparoscopic surgery and includes a knotter guide sleeve; a telescopic hook, which penetrates the axial direction of the knotter guide sleeve and is movably arranged, and is provided with a head end for hooking a suture to tighten the suture; a telescopic hook guide sleeve, which is sleeved on the telescopic hook and can be moved axially along the knotter guide sleeve, and is used to sleeve a pre-tied slipknot and make the slipknot sleeved on the suture to form a suture knot; an auxiliary tensioning rod, which penetrates the axial direction of the knotter guide sleeve and is rotatably arranged, and is used to fix the end of the slipknot to reinforce the firmness of the suture knot. The present invention can achieve knotting in one time, and the knotting is firmly fastened and will not loosen or rebound, thereby shortening the laparoscopic surgery time and reducing the risk of blood loss in patients.

Description

Technical Field

[0001] The invention belongs to the field of laparoscopic surgery, and in particular relates to a knotter for suturing in laparoscopic surgery. Background Art

[0002] Laparoscopic surgery is a minimally invasive surgical method. Due to its advantage of small postoperative scars, laparoscopic surgery has been widely used in cholecystectomy, appendectomy, gastric and duodenal ulcer perforation repair, hernia repair, colectomy, splenectomy, adrenalectomy, etc. However, the backwardness of laparoscopic suturing and knotting technology has restricted the development of laparoscopic surgery.

[0003] In order to solve the problem of inflexibility of existing knotting and suturing, the prior art (CN101449989B) discloses a laparoscopic suture knotter, which consists of a suturer and a wire holder and wire cutter, which are used together. The suturer includes a suture needle, a suturer main rod, a suturer handle, a locking screw, a locking mechanism, suture, and a handle. The handle is provided with a spool and a locking mechanism. The pull rod is located in the inner cavity of the main rod. The front end of the pull rod is hinged with a suture needle, and the rear end is fixedly connected to the clavicle screw. The clavicle screw can be rotated to rotate the suture needle 120° forward and sideways to achieve the purpose of folding the suture needle in and out and suturing. The wire holder and wire cutter serve the purpose of assisting in clamping and cutting the wire. Although the prior art can flexibly deliver wires and suture in the abdominal cavity, the knotting problem is not fundamentally solved. Figure 1 As shown, in the operation, the thread ends on both sides of the wound must be tightened to tie a single knot first, but due to the elasticity of the human muscle tissue, the first single knot will loosen before the square knot is completed by the reverse secondary crossing, which makes the knot not secure. The above-mentioned prior art cannot achieve the maintenance of the tension state of the single knot before the square knot is completed, so the same position needs to be repeatedly knotted, and the knot is not secure. Summary of the invention

[0004] Based on the above background issues, the present invention aims to provide a knotter for laparoscopic suturing, which solves the problem of repeated knotting operations in the prior art and the knots being easy to loosen, can shorten the laparoscopic surgery time, and can reduce the risk of blood loss in patients.

[0005] In order to achieve the above object, the technical solution provided by the present invention is:

[0006] A knotter for suturing in laparoscopic surgery comprises a knotter guide sleeve; a telescopic hook, which penetrates the knotter guide sleeve axially and is movably arranged, and is provided with a head end for hooking a suture to tighten the suture; a telescopic hook guide sleeve, which is sleeved on the telescopic hook and can move axially along the knotter guide sleeve, and is used to sleeve a pre-tied slipknot and make the slipknot sleeved on the suture to form a suture knot; an auxiliary tensioning rod, which penetrates the knotter guide sleeve axially and is rotatably arranged, and is used to fix the end of the slipknot to reinforce the firmness of the suture knot.

[0007] Wherein, when the telescopic hook guide sleeve moves away from the head end, the slipknot can be put on the suture line.

[0008] Wherein, the telescopic hook guide sleeve and the auxiliary tensioning rod are distributed up and down, and the central axis of the telescopic hook guide sleeve and the central axis of the auxiliary tensioning rod are in the same vertical plane.

[0009] Preferably, a telescopic hook guide sleeve operating handle is also connected to a side of the telescopic hook guide sleeve away from the head end.

[0010] Preferably, an auxiliary tension rod rotating handle is further provided at one end of the auxiliary tension rod away from the head end.

[0011] Wherein, the head end is provided with a wire clip for fixing the suture thread.

[0012] Wherein, a handle for a user to hold is also sleeved on a side of the knotter guide sleeve away from the head end.

[0013] Compared with the prior art, the present invention has the following effects:

[0014] 1. The invention provides a retractable hook, a retractable hook guide sleeve and an auxiliary tensioning rod in the axial direction in the knotter guide sleeve. Before use, a slipknot is sleeved on the end of the retractable hook guide sleeve. When in use, the suture is fixed by the retractable hook and the suture is tightened by pulling the retractable hook. Then, the retractable hook guide sleeve is moved to make the slipknot sleeve on the suture, thereby forming a suture knot. The knotting is completed in one time, the laparoscopic operation time is shortened, and the risk of blood loss of the patient is reduced.

[0015] 2. The present invention fixes the other thread end of the slipknot on the auxiliary tensioning rod. When the slipknot is put on the suture thread to form a suture knot, the suture knot can be tightened by rotating the auxiliary tensioning rod, so that the knot is transformed from a sliding knot to a square knot, a cross knot or other forms of firm knots, thereby improving the tightness of the knot.

[0016] 3. The present invention is simple and convenient to operate and can expand the application scope of laparoscopic surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below.

[0018] Figure 1 Schematic diagram of single knot and square knot used in surgical operation;

[0019] Figure 2 This is a schematic diagram of the structure of a knotter for suturing in laparoscopic surgery according to an embodiment of the present invention;

[0020] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0021] Figure 4 This is a schematic diagram of the use of a knotter for suturing in laparoscopic surgery according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiment of the present invention clearer, the technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. It should be noted that the directional word "head end" used in the description of this embodiment refers to the end that extends into the patient's body to suture the wound, and the "tail end" refers to the end outside the patient's body that can be operated by the user.

[0023] like Figure 1 As shown, when tying a knot during surgery, you must first tighten the thread ends on both sides of the wound and tie a single knot (such as Figure 1 (a), but due to the elasticity of human muscle tissue, the first single knot will loosen before the square knot is completed (as shown in Figure (b)), which makes the knot unsecured. The existing technology cannot maintain the tension of the single knot before the square knot is completed, so the same position needs to be repeatedly tied, and the knot is not secure.

[0024] Therefore, this embodiment provides a laparoscopic surgery suturing knotter, such as Figure 2 As shown, it includes a knotter guide sleeve 1, a telescopic hook guide sleeve 2, a telescopic hook 3 and an auxiliary tension rod 4. In this embodiment, the knotter guide sleeve 1 is cylindrical, which can be a hollow structure, or a through hole is opened along the axial direction for the telescopic hook guide sleeve 2 and the auxiliary tension rod 4 to pass through, and this embodiment does not make specific restrictions. Figure 2 As shown, the tail end of the knotter guide sleeve 1 is also provided with a handle 5 for the user to hold.

[0025] In the present embodiment, the telescopic hook guide sleeve 2 is arranged along the axial direction of the knotter guide sleeve 1, and the telescopic hook guide sleeve 2 passes through the knotter guide sleeve 1. The telescopic hook guide sleeve 2 can move along the axial direction of the knotter guide sleeve 1. Specifically, in the present embodiment, positioning and mounting heads are provided at the left and right ends of the knotter guide sleeve 1 corresponding to the position of the telescopic hook guide sleeve 2. The telescopic guide sleeve 2 passes through the positioning and mounting heads to be installed in the knotter guide sleeve 1. The head end of the telescopic hook guide sleeve 2 extends out of the knotter guide sleeve 1 for sleeve-mounting a pre-tied loose knot, and the tail end of the knotter guide sleeve 1 is extended for user operation. For the convenience of operation, the tail end is also connected to a telescopic hook guide sleeve operating handle 201.

[0026] like Figure 2 As shown, the telescopic hook 3 is arranged along the axial direction of the telescopic hook guide sleeve 2, and the telescopic hook 3 can be moved along the axial direction of the telescopic hook guide sleeve 2. The suture fixed on the telescopic hook 3 can be tightened by moving the telescopic hook 3 along the axial direction of the telescopic hook guide sleeve 2; the telescopic hook 3 is a round rod structure as a whole, including a head end and a tail end. The telescopic hook 3 passes through the telescopic hook guide sleeve 2, which is convenient for the head end to fix the suture and the tail end to be operated by the user. Specifically, as shown in FIG. Figure 3 As shown, the head end is provided with a wire clamp 301 for fixing the suture, and the wire clamp 301 is made of corrosion-resistant and rust-proof elastic material, approximately in an inverted herringbone shape, with a slightly larger opening, which becomes tighter towards the top, and the suture is clamped by elasticity.

[0027] In this embodiment, the auxiliary tension rod 4 is also arranged along the axial direction of the knotter guide sleeve 1 and can be rotatably arranged, but cannot move along the axial direction of the knotter guide sleeve 1. Specifically, the auxiliary tension rod 4 and the telescopic hook guide sleeve 2 are arranged in an upper and lower distribution, and the central axis of the telescopic hook guide sleeve 2 and the central axis of the auxiliary tension rod 4 are in the same vertical plane. The auxiliary tension rod 4 is also installed in the knotter guide sleeve 1 through a positioning mounting head. The auxiliary tension rod 4 is a round rod structure and is arranged through the knotter guide sleeve 1. The auxiliary tension rod 4 also includes a head end and a tail end. The head end is used to fix the other thread end of the slipknot. For easy operation, the tail end is also provided with an auxiliary tension rod rotating handle 401.

[0028] The specific working process of the present invention is as follows: Figure 4As shown, before the operation, a slipknot 6 is pre-tied at one end of the catgut without a needle for laparoscopic surgery and is sleeved on the front end of the telescopic guide sleeve 2, and the needleless thread head end 601 of the slipknot 6 is fixed to the front end of the auxiliary tensioning rod 4. The front end of the auxiliary tensioning rod 4 is a small-opening wedge-shaped elastic mechanism. The thread head is wrapped in multiple circles and stuck in the elastic wedge-shaped groove to achieve thread head fixation and tension; then the front end of the knotter together with the needle and suture thread are sent into the patient's body through a laparoscopic surgical catheter (a catheter with an inner diameter of not less than 8 mm pre-set on the patient's abdominal wall during surgery) to the wound 7 that needs to be sutured, and the wound is sutured by other auxiliary laparoscopic surgical instruments, and then the needle and thread head end 602 of the suture thread is stuck on the wire clamp 301 at the front end of the telescopic hook 3, and the excess suture is cut off with laparoscopic scissors. Thread, take out the excess suture and needle through other laparoscopic channels; then slowly pull the tail end of the telescopic hook 3 outward until the suture is taut, and the corresponding wound 7 suture point is completely tightened to the appropriate tightness; gently pull the telescopic hook guide sleeve operating handle 201 backward to make the pre-tied slipknot 6 fit on the suture pulled by the telescopic hook 3; use your fingers to roll the auxiliary tensioning rod rotating handle 401 to tighten the suture knot, and continue to tighten the telescopic hook 3 until the tightness of the wound 7 meets the tightness of the suture; finally, loosen the auxiliary tensioning rod rotating handle 401 and the telescopic hook 3, hold the handle 5 and gently withdraw the knotter outward; and use laparoscopic scissors to cut off the excess suture, and the suture and knotting work can be completed after cleaning the cut excess suture. Follow the same steps as above to complete the wound suture of more needles.

[0029] The present invention solves the problem that under existing laparoscopic surgery conditions, tying knots is difficult, time-consuming and labor-intensive due to the elasticity of human muscle tissue when suturing wounds. At the same time, due to its simple operation, it alleviates the problems of patient pain and blood loss caused by the long laparoscopic surgery time in the past, reduces the labor intensity of doctors, increases the surgical capacity per working day, solves the problem that laparoscopic surgery cannot be widely promoted due to operational reasons, and can greatly improve the efficiency of laparoscopic surgery.

[0030] It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements all fall within the protection scope of the present invention.

Claims

1. A knotter for suturing laparoscopic surgery, comprising a knotter guide sleeve, characterized in that: Also includes: A telescopic hook is axially penetrated through the knotter guide sleeve and is movably arranged, and is provided with a head end for hooking the suture to tighten the suture; the head end is provided with a wire clamp for fixing the suture; A telescopic hook guide sleeve, which is sleeved on the telescopic hook and can move axially along the knotter guide sleeve, and is used to sleeve a pre-tied slipknot and make the slipknot sleeved on the suture to form a suture knot; An auxiliary tensioning rod, which penetrates the knotter guide sleeve axially and is rotatably arranged, and is used to fix the end of the slipknot to reinforce the firmness of the suture knot; An auxiliary tension rod rotating handle is also provided at one end of the auxiliary tension rod away from the head end; Before the operation, a slipknot is tied at one end of the catgut without a needle used for laparoscopic surgery and is sleeved on the front end of the telescopic guide sleeve, and the end of the slipknot without a needle is fixed to the front end of the auxiliary tensioning rod. The front end of the auxiliary tensioning rod is a small-opening wedge-shaped elastic mechanism. The thread end is wrapped in multiple circles and stuck in the elastic wedge-shaped groove to fix and tighten the thread end; then the front end of the knotter together with the needle and suture thread are sent into the wound that needs to be sutured in the patient's body through the laparoscopic surgical catheter.

2. The laparoscopic surgery suturing knotter according to claim 1, characterized in that: When the telescopic hook guide sleeve moves away from the head end, the slip knot can be placed on the suture.

3. The laparoscopic surgery suturing knotter according to claim 1, characterized in that: The telescopic hook guide sleeve and the auxiliary tensioning rod are distributed up and down, and the central axis of the telescopic hook guide sleeve and the central axis of the auxiliary tensioning rod are in the same vertical plane.

4. According to the laparoscopic surgical suturing knotter of claim 3, a telescopic hook guide sleeve operating handle is also connected to the side of the telescopic hook guide sleeve away from the head end.

5. The knotter for suturing laparoscopic surgery according to claim 1, wherein a handle for a user to hold is also provided on a side of the knotter guide sleeve away from the head end.

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