Disposable nylon rope ligation device for visual mirror operation

Abstract

The disposable nylon rope ligation device comprises a sleeve, a sheathing canal and a steel wire which are sequentially sleeved, an operating handle is arranged at the tail end of the sheathing canal and comprises a handle front end, a sliding rod and a handle finger ring which are sequentially connected, a sliding handle is arranged on the sliding rod in a sliding mode, and the handle front end is connected with the handle finger ring in a sliding mode. The tail of the steel wire penetrates through the front end of the handle and is connected to the sliding handle, the other end of the steel wire is connected with a barb and a nylon rope, the sliding rod is sleeved with a locking nut, a threaded connecting part is arranged at the position, close to the sliding rod, of the end of the sliding handle, and a pressing limiting piece which is sleeved with the locking nut and used for pressing the sliding rod extends from the end of the threaded connecting part; the limiting piece and the locking nut are arranged on the sliding handle, the locking nut is tightened to press and lock the limiting piece before nylon rope ligation is completed, the sliding handle is limited and locked, the nylon rope unhooking accident caused by misoperation and displacement of the sliding handle is avoided, the work intensity of medical workers is reduced, and the working efficiency of the medical workers is improved. The operation implementation efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical instruments, and particularly relates to a disposable nylon rope ligation device for visual mirror operation. Background Art

[0002] Nylon ligator (endo-loop) is a commonly used ligation device for endoscopy, which has a wide range of uses, including: 1) ligating the thick pedicle of gastrointestinal polyps, thereby blocking the blood supply of polyps and preventing bleeding after polypectomy; 2) ligating the base of intracavitary submucosal tumors of the gastrointestinal tract, causing chronic ischemic necrosis of submucosal tumors and eventual detachment; 3) closing the wound after full-thickness resection of the gastrointestinal tract and assisting in suturing the perforated area (commonly known as purse-string suture); 4) ligating part of the tissue under laparoscopy to facilitate surgical resection or blockage of blood supply; 5) Others: The nylon ligator currently used is released with a special nylon rope pusher. The ligation effect is clear and reliable, and its use effect is good. It is increasingly widely used in tertiary hospitals, requiring a large number of medical staff to operate the nylon ligator proficiently.

[0003] The front end of the nylon ligature is in the shape of a large circular ring, which is also the main part of the ligature. This ligature ring is made of nylon and has poor elasticity. Although it is in the shape of a circular ring outside the body, it is difficult to open the circular ring in narrow cavities such as the esophagus, small intestine, and large intestine. If the target tissue to be ligated is too large, it is difficult to successfully trap it. At the same time, the nylon ligature is relatively soft in texture. After successfully trapping the target tissue, it is difficult to properly press down to the base of the target tissue. Therefore, the nylon ligature is often only used by professionals with a solid foundation in endoscopy and skilled endoscopy control. Figure 1 The figure shows a disposable ligation device produced by Olympus Medical Co., Ltd. In actual operation, the movable hook at the end of the steel wire controls the position of the nylon rope. Especially in long-term operations such as gastric bleeding and colorectal perforation that require ligation, improper operation will always cause the nylon rope to be unhooked from the hook. When the nylon rope is unhooked, it will cause great trouble to the surgeons and patients. The nylon rope needs to be reconnected in the body under endoscopy. Even users with skilled endoscopic control capabilities often need to hook the nylon rope for up to 1-2 hours, which brings great pain to the patient and causes medical staff in non-tertiary hospitals such as district and county hospitals to dare not try to operate the nylon ligator. Improving the use efficiency of the nylon ligator and reducing the nylon rope unhooking accidents are the directions that every nylon ligator user needs to study.

[0004] At present, in order to avoid the occurrence of nylon rope unhooking accidents, two medical staff are required to operate the nylon ligator at the same time during clinical operations. One of the full-time medical staff holds the first manual slide handle at the end of the nylon ligator 1 meter away from the operating table and controls the second manual slide handle to prevent the second manual slide handle from shifting. The shift of the second manual slide handle will cause an unhooking accident. During the 1-3 hour operation, full-time medical staff are prone to fatigue and negligence leading to unhooking accidents. In order to reduce the burden and intensity of full-time medical staff, a stop clamp and a limit clamp are set on the first manual slide handle to limit the displacement of the second manual slide handle. The stop clamp and the limit clamp have the problem of low connection reliability. Therefore, a new device is needed to control the displacement of the second manual slide handle after ligation without affecting the normal operation of the second manual slide handle before ligation. Summary of the invention

[0005] The utility model provides a disposable nylon rope ligation device for visual mirror operation. The disposable nylon rope ligation device for visual mirror operation is provided with a limit plate and a locking nut on a sliding handle. Before the ligation of the nylon rope is completed, the locking nut is tightened to press and lock the limit plate, so that the sliding handle is limited and locked, so as to avoid the sliding handle from being displaced due to misoperation and causing the nylon rope to be unhooked, reduce the work intensity of medical staff, and improve the efficiency of operation.

[0006] In order to solve the above technical problems, the utility model discloses a disposable nylon rope ligation device for operating a videoscope, comprising a sleeve, a sheath tube and a steel wire which are sequentially mounted, an operating handle is arranged at the tail end of the sheath tube, the operating handle comprises a handle front end, a slide rod and a handle finger ring which are sequentially connected, a sliding handle is slid on the slide rod, the tail end of the steel wire passes through the handle front end and is connected to the sliding handle, the other end of the steel wire is connected to a barb close to the sleeve end and a nylon rope connected to the barb and used to extend out of the sleeve end, characterized in that a locking nut is mounted on the slide rod, a threaded connection portion connected to the locking nut is arranged at the end of the sliding handle near the slide rod, and a compression limit plate which is mounted in the locking nut and is used to be compressed on the slide rod is extended at the end of the threaded connection portion.

[0007] Furthermore, the threaded connection portion is arranged on the end of the sliding handle away from the handle finger ring.

[0008] Furthermore, the threaded connection portion is arranged on the end of the sliding handle close to the front end of the handle, and the front end of the handle is provided with a convex portion for preventing the locking nut from sliding out.

[0009] Furthermore, the clamping and limiting plates are provided in a number of not less than 2 and are symmetrically arranged on the threaded connection portion.

[0010] Furthermore, the upper and lower ends of the sliding rod are arranged as hollow structures, a connecting column for fixing the steel wire is arranged in the middle of the sliding handle, and accommodating holes for accommodating the sliding rod to pass through are arranged on both sides of the connecting column in the sliding handle, and a limit spring sleeved on the steel wire is arranged between the connecting column and the front end of the handle in the sliding rod.

[0011] Furthermore, the outer wall of the slide rod is arranged as an arc-shaped structure, and the clamping and limiting plates are arranged in two pairs and are correspondingly arranged on the upper arc wall and the lower arc wall of the slide rod respectively.

[0012] Furthermore, the clamping limit plate is arranged in a pair, the upper end and the lower end of the slide rod are both arranged as tapered grooves extending inwardly, and the clamping limit plate is arranged as a tapered limit plate adapted to the tapered groove.

[0013] The beneficial effects of the utility model are:

[0014] The utility model discloses a disposable nylon rope ligation device for visual mirror operation. By arranging a limit plate and a locking nut on a sliding handle, before the ligation of the nylon rope is completed, the locking nut is tightened to compress and lock the limit plate, so that the sliding handle is limited and locked, thereby avoiding the accident of nylon rope unhooking caused by misoperation displacement of the sliding handle, reducing the work intensity of medical staff and improving the efficiency of operation implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] FIG1 is a schematic structural diagram of an existing disposable nylon rope ligation device for videoscope operation;

[0016] Figure 2 is Figure 1 Enlarged schematic diagram of the middle nylon rope part;

[0017] FIG3 is a schematic structural diagram of a disposable nylon rope ligation device for visual mirror operation of the present invention;

[0018] FIG4 is a top view of a limiting portion of a disposable nylon rope ligation device for visual mirror operation according to the present invention;

[0019] FIG5 is an end view of a sliding handle in a disposable nylon rope ligation device for videoscope operation of the present invention;

[0020] FIG. 6 is an end view of another embodiment of a sliding handle in a disposable nylon rope ligation device for videoscope operation according to the present invention.

[0021] Figure numerals: 1. operating handle; 2. sleeve; 3. sheath; 4. steel wire; 5. barb; 6. nylon rope; 7. sliding handle; 8. sleeve handle; 9. locking nut; 10. front end of handle; 11. sliding rod; 12. handle finger ring; 13. limit spring; 14. compression limit plate; 15. threaded connection; 16. connecting column; 17. receiving hole; 18. conical limit plate; 19-conical groove. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Embodiment 1

[0023] like Figure 1-5 The utility model is a structural schematic diagram of a disposable nylon rope ligation device for operating a videoscope. The utility model is a disposable nylon rope ligation device for operating a videoscope, comprising a sleeve 2, a sheath tube 3 and a steel wire 4 which are sequentially mounted. The tail end of the sheath tube 4 is provided with an operating handle 1, and the operating handle 1 comprises a handle front end 10, a slide rod 11 and a handle finger ring 12 which are sequentially connected. A sliding handle 7 slides on the slide rod 11. The tail end of the steel wire 4 passes through the handle front end 10 and is connected to the sliding handle 7. The other end of the steel wire 4 is connected with a barb 5 close to the sleeve end and a nylon rope 6 connected to the barb 5 and used to extend out of the sleeve end. A locking nut 9 is mounted on the slide rod 11. A threaded connection portion 15 connected to the locking nut 9 is provided at the end of the sliding handle 7 near the slide rod. A compression limit plate 14 which is mounted in the locking nut 9 and is used to be compressed on the slide rod extends from the end of the threaded connection portion 15.

[0024] In this embodiment, a compression limit plate 14 and a locking nut 9 are provided on the sliding handle 7. Before the nylon rope is ligated, the locking nut 9 is tightened to compress and lock the compression limit plate, so that the sliding handle 7 is limited and locked, and the nylon rope 6 and the barb 5 are fixed on the sleeve, so that the sliding handle 7 can be prevented from moving on the operating handle 1, and the sliding handle can be prevented from being displaced due to misoperation and causing the nylon rope 6 to be unhooked, thereby reducing the workload of medical staff and improving the efficiency of surgical implementation.

[0025] In the operation of this embodiment, the disposable nylon rope ligation device is inserted into the endoscope only when the endoscope field of view is clearly visible. The operation steps are as follows:

[0026] 1. Push the sheath connector forward and retract the nylon rope 6 ligature ring into the outer sheath;

[0027] 2. Make sure the entire nylon rope 6 ligature ring is retracted into the outer sheath;

[0028] 3. Carefully insert the disposable nylon rope ligation device into the endoscopic forceps pipeline opening valve;

[0029] 4. Push the disposable nylon ligation device until the tip of its insertion part appears in the endoscope field of view;

[0030] 5. When approaching the target tissue for ligation, the endoscope angle should be adjusted appropriately, and the disposable nylon rope ligation device should be pushed to an appropriate distance to reach the target site;

[0031] 6. Pull the sheath connector to the end, and extend the nylon ligation ring from the outer sheath. When operating the sheath connector, be careful not to move the sliding handle. At this time, use the locking nut to lock the sliding handle.

[0032] 7. Place the opened ligature ring over the tissue;

[0033] 8. Pull the sliding handle to ligate the target tissue;

[0034] 9. Push the sliding handle all the way to extend the hook from the spiral sheath and detach the ligature from the hook.

[0035] From the above steps, after the nylon rope 6 unhooking accident occurs in step 6, the entire operation process is performed within the endoscope. Under the small space, the field of vision is narrow and the difficulty is great, which can easily lead to prolonged operation time. By setting the locking limit control, the nylon rope 6 unhooking accident can be avoided, the operation efficiency can be improved, and the operation time can be shortened.

[0036] In a preferred embodiment, the threaded connection portion 15 is arranged on the end of the sliding handle 7 away from the handle finger ring 12. In this embodiment, the threaded connection portion 15 is arranged at the front end of the sliding handle 7, which is convenient for operation and avoids the sliding handle 7 from shifting forward and backward, which is convenient for processing. When the operating handle 1 is processed into an integrally formed body, the sliding handle 7 and the locking nut 9 are installed through the front end 10 of the handle. In this embodiment, the threaded connection portion 15 can also be arranged on the end of the sliding handle 7 close to the handle finger ring 12. This structure is conducive to making the operating handle 1 compact, especially when a spring is arranged at the front end of the sliding handle 7, the limiting effect is better.

[0037] In a preferred embodiment, the threaded connection portion 15 is arranged on the end of the sliding handle 7 near the front end 10 of the handle, and the front end 10 of the handle is provided with a convex portion for preventing the locking nut 9 from sliding out. This structure is convenient for operation and prevents the locking nut 9 from sliding out. When the convex portion is formed integrally with the front end 10 of the handle, the slide bar 11 and the handle finger ring 12 can adopt a detachable mechanism, wherein the convex portion, the front end 10 of the handle and the slide bar 11 are arranged as an integrally formed body, the sliding handle 7 and the locking nut 9 are installed through the rear end of the slide bar 11, and then the handle finger ring 12 is installed. The convex portion can also be threadedly connected to the front end 10 of the handle. After the sliding handle 7 and the locking nut 9 are installed through the front end of the slide bar 11, the convex portion is connected to the front end 10 of the handle to prevent the locking nut 9 from sliding out.

[0038] In a preferred embodiment, the clamping limit plate 14 is provided with no less than two pieces and is symmetrically arranged on the threaded connection portion 15. The structure of this embodiment utilizes the friction between the clamping limit plate 14 and the slide rod 11 to prevent the sliding handle 7 from moving on the slide rod 11, thereby realizing the limiting function.

[0039] In a preferred embodiment, the upper and lower ends of the slide rod 11 are set as a hollow structure, and a connecting column 16 for fixing the steel wire 4 is set in the middle of the sliding handle 7. Receiving holes 17 for accommodating the passage of the slide rod 11 are set on both sides of the connecting column 16 in the sliding handle 7, and a limiting spring 13 sleeved on the steel wire 4 is set in the slide rod 11 between the connecting column 16 and the front end 10 of the handle. In this embodiment, the structure can prevent the sliding handle 7 from slipping out of the operating handle 1 through the limiting spring 13. During installation, the sliding handle 7 and the locking nut 9 are installed from the front end 10 of the handle, and then the limiting spring 13 is clamped between the connecting column 16 and the front end 10 of the handle, and then the steel wire 4 is inserted from the front end 10 of the handle and passed through the limiting spring 13 and fixedly installed on the connecting column 16, so that the sliding handle 7 and the locking nut 9 are installed and limited, and the limiting spring 13 prevents the sliding handle 7 from slipping out of the operating handle 1.

[0040] In a preferred embodiment, the outer wall of the slide rod 11 is arranged in an arc-shaped structure, and the clamping limit plates 14 are arranged in two pairs and are correspondingly arranged on the upper arc wall and the lower arc wall of the slide rod 11 respectively. This structure realizes the locking and limiting function by squeezing the clamping limit plates 14 against the inner wall of the locking nut 9 to make them close to the upper arc wall and the lower arc wall, thereby avoiding the displacement of the steel wire and the nylon rope 6 before the nylon rope is tied, and reducing the occurrence of nylon rope unhooking accidents. Embodiment 2

[0041] like Figure 6The present invention is a schematic structural diagram of a disposable nylon rope ligation device for visual mirror operation. The present invention is a disposable nylon rope ligation device for visual mirror operation. The difference between this embodiment and the first embodiment is that: a clamping limit plate 14 is arranged in a pair, and the upper and lower ends of the slide bar 11 are both arranged as tapered grooves 19 extending inwardly, and the clamping limit plate is arranged as a tapered limit plate 18 adapted to the tapered groove. The structure realizes the locking and limiting function by squeezing the clamping limit plate 14 against the inner wall of the locking nut 9 to make it close to the groove wall of the tapered groove 19, thereby avoiding the displacement of the steel wire and the nylon rope 6 before the nylon rope ligation is completed, and reducing the occurrence of nylon rope unhooking accidents.

[0042] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A disposable nylon rope ligation device for videoscope operation, comprising a sleeve, a sheath tube and a steel wire which are sequentially mounted, an operating handle is provided at the tail end of the sheath tube, and the operating handle comprises a handle front end, a slide rod and a handle finger ring which are sequentially connected, a sliding handle is slid on the slide rod, the tail of the steel wire passes through the handle front end and is connected to the sliding handle, and the other end of the steel wire is connected to a barb near the sleeve end and a nylon rope connected to the barb and used to extend out of the sleeve end, characterized in that: The slide bar is provided with a locking nut, and the end of the slide handle is provided with a threaded connection portion connected to the locking nut near the slide bar, and the end of the threaded connection portion extends to a compression limit plate which is mounted in the locking nut and is used to be compressed on the slide bar.

2. A disposable nylon rope ligation device for videoscope operation according to claim 1, characterized in that: The threaded connection portion is arranged on the end of the sliding handle away from the handle finger ring.

3. A disposable nylon rope ligation device for videoscope operation according to claim 1, characterized in that: The threaded connection portion is arranged on the end of the sliding handle close to the front end of the handle, and the front end of the handle is provided with a convex portion for preventing the locking nut from sliding out.

4. A disposable nylon rope ligation device for videoscope operation according to any one of claims 1 to 3, characterized in that: The number of the clamping and limiting plates is no less than 2 and they are symmetrically arranged on the threaded connection part.

5. A disposable nylon rope ligation device for videoscope operation according to claim 4, characterized in that: The upper and lower ends of the sliding rod are set as hollow structures, a connecting column for fixing the steel wire is set in the middle of the sliding handle, and accommodating holes for accommodating the sliding rod to pass through are set on both sides of the connecting column in the sliding handle, and a limit spring sleeved on the steel wire is set between the connecting column and the front end of the handle in the sliding rod.

6. A disposable nylon rope ligation device for videoscope operation according to claim 5, characterized in that: The outer wall of the slide bar is arranged in an arc-shaped structure, and the clamping and limiting plates are arranged in two pairs and are correspondingly arranged on the upper arc wall and the lower arc wall of the slide bar respectively.

7. A disposable nylon rope ligation device for videoscope operation according to claim 5, characterized in that: The clamping limit plates are arranged in a pair, the upper end and the lower end of the slide rod are both arranged as tapered grooves extending inwardly, and the clamping limit plates are arranged as tapered limit plates adapted to the tapered grooves.

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