Endoscope with ligation device

Abstract

This invention provides an endoscope with a ligation device, which includes a front cap, a release liner, a ligation ring, and a release structure. The release structure includes a release element, a one-way ratchet, a fixed ratchet, and a spring. The release element, one-way ratchet, and fixed ratchet are sequentially mounted on a dial shaft coaxial with the operating lever's rotation axis. The two end faces of the one-way ratchet are symmetrically provided with evenly spaced ratchet teeth. The side of the release element near the one-way ratchet has ratchet teeth that mesh with the ratchet teeth of the one-way ratchet. The fixed ratchet is fixedly connected to the handle's housing, and its end face has ratchet teeth that mesh with the ratchet teeth of the one-way ratchet. The spring is used to reset the release element. Rotating the release element allows the release liner to move the ligation ring towards the free end of the front cap until it detaches from the front cap. Because the release structure is cleverly positioned on the operating lever's rotation axis, this invention allows for a single surgical procedure of observation and ligation without increasing the size of the endoscope handle.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an endoscope with a ligation device. Background Technology

[0002] Endoscopes are commonly used medical devices in modern medical diagnosis and treatment. They can be inserted directly into the body through natural cavities for diagnosis and treatment. During use, the endoscope's insertion part enters the body's natural cavities, and doctors can visually observe the condition of relevant areas through a monitor. Photos can be taken and saved for multiple screenings and comparisons.

[0003] A ligator is a common instrument used to ligate and remove tissue in human cavities. Most existing endoscopes do not have a ligation device. The doctor first examines the cavity; if ligation is needed, the endoscope is removed, the ligator is inserted through a forceps tube, and then reinserted until the lesion is ligated. This double insertion causes more pain for the patient. There are endoscopes with ligation devices, which, although made of transparent materials, have a narrowed field of view and are affected by light refraction. In practice, medical staff often perform an endoscopy without a ligation cap first, then remove the endoscope, install the ligation device, and reinsert the endoscope into the human or animal cavity when ligation is required. This significantly impacts the doctor's efficiency. This inconvenient procedure leads to longer surgery times, higher patient risks, and increased fatigue for medical staff due to repetitive operations. Utility Model Content

[0004] This invention provides an endoscope with a ligation device to solve at least one of the above-mentioned problems.

[0005] According to one aspect of this utility model, an endoscope with a ligation device is provided. The endoscope includes a camera and an instrument channel, as well as an operating lever and a handle for adjusting the direction of the camera. The ligation device comprises a front cap, a release line, a ligation ring, and a release structure. The front cap is fitted outside the camera and instrument channel. The ligation ring is fitted outside the front cap. The release structure includes a release element, a one-way ratchet, and a fixed ratchet, as well as a spring. The release element, the one-way ratchet, and the fixed ratchet are sequentially fitted onto a dial shaft coaxial with the rotating shaft of the operating lever. The release element and the one-way ratchet can... The dial shaft rotates; the two end faces of the one-way ratchet are symmetrically provided with evenly spaced ratchet teeth; the side of the release element near the one-way ratchet is provided with ratchet teeth that mesh with the ratchet teeth of the one-way ratchet; the fixed ratchet is fixedly connected to the housing of the handle, and the end face of the fixed ratchet is provided with ratchet teeth that mesh with the ratchet teeth of the one-way ratchet; the spring is used to reset the release element; the first end of the release line is connected to the one-way ratchet, the middle section passes through the instrument channel inside the handle, and the second end is located between the front cap and the ligature ring; it is configured to rotate the release element so that the release line can drive the ligature ring to move towards the free end of the front cap until it is detached from the front cap.

[0006] This invention relates to an endoscope with a ligation device. A ligation ring is installed at the endoscope's front cap, and a release mechanism is located on the operating lever's pivot. When medical personnel observe lesions in tissue through the endoscope's camera, the front end of the cap can be placed over the lesion. The endoscope's suction function is then activated, drawing the lesion into the cap. At this point, the release mechanism can be used to pull the release line outwards. The ligation ring, pulled by the release line, moves towards the front end of the cap. Once detached from the cap, the ligation ring will encircle the rear of the tissue drawn into the cap. This allows medical personnel to treat the lesion through the instrument channel without repeatedly removing the instruments, withdrawing the endoscope, installing the ligation device, and re-entering the body to locate the treatment site. This significantly improves surgical convenience, shortens operation time, reduces patient risk, and greatly minimizes repetitive work for medical personnel. Furthermore, because the release mechanism is cleverly positioned on the operating lever's pivot, observation and ligation can be completed in a single procedure with minimal increase in the size of the endoscope handle.

[0007] In some embodiments, the release member of this invention is provided with a lever extending to the outside.

[0008] In some embodiments, the spring of this invention is a torsion spring, with the spring coil sleeved on the dial shaft, one end connected to the release element, and the other end connected to the handle housing. This arrangement serves both to reset the release element and to avoid increasing the size of the endoscope handle.

[0009] In some embodiments, the present invention further includes a plurality of wire clips sequentially disposed at the second end of the release line, and at least one wire clip is disposed between adjacent ferrules.

[0010] In some embodiments, this invention provides release lines on both sides of the front cap, between the rubber band and the front cap. This allows for traction on both sides of the rubber band, making it easier for the rubber band to detach from the front end.

[0011] In some embodiments, the distance between adjacent suture beads of this invention is greater than the distance from the ligature ring to the front end of the cap. Therefore, medical personnel can choose the number of ligature rings to use as needed.

[0012] In some embodiments, the distance between adjacent thread catch beads of this invention is equal to the distance that each ratchet of the lever rotates once. Therefore, each time the lever is turned, one of the locking rings is released.

[0013] In some embodiments, the instrument channel of this invention has a connector on the side wall inside the handle, which communicates with the instrument channel; a sealing element is provided inside the free end of the connector, and a locking cap is fitted outside the connector; the release line passes through the locking cap, the sealing element, and the connector, and enters the instrument channel. This achieves a sealing effect, preventing air leakage during the pulling of the release line and enabling negative pressure suction of the lesion tissue. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an endoscope with a ligation device according to one embodiment of the present invention.

[0015] Figure 2 This is a schematic diagram of the release structure of an endoscope with a ligation device according to one embodiment of the present invention.

[0016] Figure 3 for Figure 2 The diagram shows the exploded structure of the release structure.

[0017] Figure 4 This is a schematic diagram showing the front cap of an endoscope with a ligation device in use according to one embodiment of the present invention.

[0018] Figure 5 This is a schematic diagram of the installation structure of the middle section of the release line of an endoscope with a ligation device according to one embodiment of the present invention.

[0019] Figure 6 for Figure 5 The diagram shows the internal structure of the middle section of the release line.

[0020] Reference numerals: 2-Insert tube, 3-Instrument channel, 4-Handle, 40-Operating lever, 5-Wire catch bead, 6-Lasso ring, 7-Release element, 71-Lever, 8-Release line, 10-Tissue with lesions, 11-Camera, 12-Front end cap, 13-Spring, 14-One-way ratchet, 15-Fixed ratchet, 16-Disc shaft, 17-Locking cap, 18-Connector, 19-Seal. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0023] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising" or "including" include not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0024] The present invention will now be described in further detail with reference to the accompanying drawings.

[0025] Figure 1 The structure of an endoscope with a ligation device according to one embodiment of the present invention is shown schematically.

[0026] refer to Figure 1 As shown, the endoscope includes a camera 11, an insertion tube 2, an instrument channel 3, and an operating lever 40 and a handle 4 for adjusting the position of the camera. The operating lever 40 includes levers for adjusting the up-down and left-right positions of the camera 11.

[0027] The ligation device includes a front cap 12, a release line 8, a ligation rubber ring 6, and a release structure.

[0028] The front cap 12 is fitted on the outside of the camera 11 and the instrument channel 3.

[0029] Multiple slings 6 are sequentially fitted onto the outside of the front cap 12.

[0030] Figure 2 and Figure 3 The diagram schematically illustrates the structure of a release mechanism for an endoscope with a ligation device according to one embodiment of the present invention.

[0031] refer to Figure 2 and Figure 3 As shown, the release structure includes a release element 7, a one-way ratchet 14 and a fixed ratchet 15, and a spring 13.

[0032] Release element 7, one-way ratchet 14, and fixed ratchet 15 are sequentially mounted on dial shaft 16. Release element 7 and one-way ratchet 14 can rotate about dial shaft 16. Dial shaft 16 is mounted outside the rotating shaft of endoscope operating lever 40 and is coaxial with the rotating shaft of endoscope operating lever 40.

[0033] The two end faces of the one-way ratchet 14 are symmetrically provided with evenly spaced ratchet teeth. The side of the release member 7 near the one-way ratchet 14 is provided with ratchet teeth that mesh with the ratchet teeth of the one-way ratchet 14. The fixed ratchet 15 is fixedly connected to the housing of the handle 4, and the end face of the fixed ratchet 15 is provided with ratchet teeth that mesh with the ratchet teeth of the one-way ratchet 14.

[0034] Spring 13 is used to reset release member 7. In this embodiment, spring 13 is a torsion spring, with its coil sleeved on dial shaft 16, one end connected to release member 7, and the other end connected to the housing of handle 4. Release member 7 is provided with a lever 71 extending to the outside. In other embodiments, spring 13 may also be a tension spring or compression spring, or other elastic component.

[0035] The first end of the release line 8 is fixedly connected to the one-way ratchet 14, the middle section passes through the instrument channel 3 from inside the handle 4, and the second end is set between the front cap 12 and the ligature ring 6.

[0036] When lever 71 is actuated, the actuating element 7 rotates, driving the one-way ratchet 14 to rotate via its ratchet teeth meshing with the ratchet. When lever 71 is released, the spring 13 returns lever 71 to its original position, while the one-way ratchet 14, limited by the fixed gear 15, can only rotate in one direction. During rotation, the one-way ratchet 14 gradually tensions the release line 8, causing it to move the ferrule 6 towards the free end of the front cap 12 until it detaches from the front cap 12.

[0037] Figure 4 The illustration schematically shows the use state of the front cap of an endoscope with a ligation device according to one embodiment of the present invention.

[0038] refer to Figure 4As shown, the front cap 12 is fitted onto the outside of the camera 11 and the instrument channel 3.

[0039] The release line 8 extends through the instrument channel 3 to the outside of the front cap 12. Multiple thread catch beads 5 are sequentially arranged at the second end of the release line 8, and one thread catch bead 5 is arranged between adjacent ligature rings 6. In other embodiments, multiple thread catch beads 5 between adjacent ligature rings 6 can be provided as needed.

[0040] Release lines 8 are provided on both sides of the front cap 12, between the ligature ring 6 and the front cap 12. This allows for traction on both sides of the ligature ring, making it easier for the ligature ring 6 to detach from the front cap 12. Alternatively, multiple release lines 8 can be evenly distributed on the outer side of the front cap 12. When medical personnel pull the release lines 8 from the front of the front cap backward, the line retainers 5 can traction on the ligature ring 6 at multiple points, further facilitating its detachment from the front cap 12.

[0041] The distance between the suture beads 5 can be greater than the distance from the ligature ring 6 to the front end of the front cap 12. This allows medical personnel to pull the ligature rings 6 off one by one from the front end of the front cap 12, and the number of ligature rings 6 can be selected as needed. Generally, 4-6 ligature rings 6 are used, and the number can be selected according to the specific surgical situation. The distance between adjacent suture beads 5 can also be less than the distance from the ligature ring 6 to the front end of the front cap 12. When the previous ligature is released, the next one has already been pulled forward a certain distance, but this will not affect its use.

[0042] The distance between adjacent wire clips 5 can also be equal to the distance the one-way ratchet 14 rotates each time it is turned. In this way, each time the lever is turned, one of the rubber rings can be released.

[0043] Medical personnel insert the endoscope's front cap 12 and insertion tube 2 into the natural cavities of the human or animal body. When the medical personnel observe the lesion tissue 10 through the endoscope's camera 11, they first cover the lesion tissue 10 with the front end of the end cap 12, and then activate the endoscope's suction or water suction function. The lesion tissue 10 will be sucked into the front cap 12. At this time, the lever 71 is turned, causing the one-way ratchet 14 to rotate, which in turn gradually tightens the release line 8. The thread catch 5 at the second end of the release line 8 will cause the ligature ring 6 to move gradually towards the end of the end cap 12 until it detaches from the end cap 12 and is ligated around the rear of the lesion tissue 10 sucked into the end cap. After the ligature ring 6 detaches from the end cap, it will shrink back to its natural state. Over time, the lesion tissue 10 ligated by it will necrotize and fall off naturally, exiting the body through the natural cavity. The ligature ring 6 will also detach and exit the body through the natural cavity.

[0044] Figure 5 and Figure 6 The diagram schematically illustrates the installation structure of the release line mid-section of an endoscope with a ligation device according to one embodiment of the present invention.

[0045] refer to Figure 5 and Figure 6 As shown, a connector 18 is provided on the side wall inside the handle 4 of the instrument channel 3 of the endoscope, and the connector 18 communicates with the instrument channel 3. A sealing element 19 is provided inside the free end of the connector 18, and a locking cap 17 is fitted over the connector 18. The release line 8 passes through the locking cap 17, the sealing element 19, and the connector 18, and enters the instrument channel 3. This arrangement can achieve a sealing effect, preventing air leakage during the pulling of the release line 8, and achieving negative pressure suction of the lesion tissue 10.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An endoscope with a ligation device, said endoscope comprising a camera and an instrument channel, and a lever and a handle for adjusting the direction of the camera; characterized in that, The bandaging device includes a front cap, a release line, a bandaging rubber ring, and a release structure; The front cap is fitted onto the outside of the camera and instrument channel; The ferrule is fitted onto the outside of the front cap; The release structure includes a release element, a one-way ratchet and a fixed ratchet, and a spring; The release element, one-way ratchet, and fixed ratchet are sequentially sleeved on the dial shaft, which is coaxial with the rotation shaft of the operating lever. The release element and one-way ratchet can rotate around the dial shaft. The two end faces of the one-way ratchet are symmetrically provided with evenly spaced ratchet teeth; The release member has ratchet teeth on the side near the one-way ratchet that engage with the ratchet teeth of the one-way ratchet. The fixed ratchet is fixedly connected to the housing of the handle, and the end face of the fixed ratchet is provided with ratchet teeth that mesh with the ratchet teeth of the one-way ratchet. The spring is used to reset the release element; The first end of the release line is connected to the one-way ratchet, the middle section passes through the instrument channel from inside the handle, and the second end is located between the front cap and the ligature ring. The release element is configured to rotate so that the release line can move the ferrule towards the free end of the front cap until it detaches from the front cap.

2. The endoscope with a ligation device according to claim 1, characterized by The release element is provided with a lever that extends to the outside.

3. The endoscope with a ligation device according to claim 1, wherein The spring is a torsion spring, with the spring coil sleeved on the dial shaft, one end connected to the release element, and the other end connected to the handle housing.

4. The endoscope with a ligation device according to any one of claims 1 to 3, characterized in that It also includes a plurality of wire clips sequentially disposed at the second end of the release line, with at least one wire clip between adjacent ferrules.

5. The endoscope with a ligation device according to claim 4, characterized by On both sides of the front cap, there is a release line between the ferrule and the front cap.

6. The endoscope with a ligation device according to claim 4, wherein The distance between adjacent wire clips is greater than the distance from the ferrule to the front end of the front cap.

7. The endoscope with a ligation device according to claim 4, wherein The distance between adjacent pins is equal to the distance the one-way ratchet rotates each time it is turned.

8. The endoscope with a ligation device according to claim 1, wherein The instrument channel has a connector on the side wall inside the handle, and the connector communicates with the instrument channel; The free end of the connector is equipped with a sealing element, and the outside of the connector is fitted with a locking cap; The release line passes through the locking cap, seal, and connector, and enters the instrument channel.

Images