Gastrointestinal tract content cutting and sucking device and endoscope

Abstract

The invention provides a gastrointestinal tract content cutting and sucking device and an endoscope, the gastrointestinal tract content cutting and sucking device can pass through a working channel of the endoscope, and the gastrointestinal tract content cutting and sucking device comprises an outer cylinder, a first notch is formed in one axial end of the outer cylinder, and the setting position of the first notch does not exceed the central axis of the outer cylinder; a second notch is formed in one axial end of the inner cylinder body, the inner cylinder body is attached to the inner wall of the outer cylinder body and is coaxially and rotatably connected with the outer cylinder body, and when the inner cylinder body rotates relative to the outer cylinder body, a second knife edge formed at the edge of the second notch and a first knife edge formed at the edge of the first notch can jointly complete the shearing action so as to cut off gastrointestinal tract contents entering the second notch; one end of the negative-pressure hose is communicated with the inner cylinder, the other end of the negative-pressure hose is communicated with a negative-pressure device, and the cut gastrointestinal tract contents can be conveyed. According to the gastrointestinal tract content cutting and sucking device, the gastrointestinal tract content can be rapidly cut off and pumped out through the negative pressure hose, and the gastrointestinal tract content such as blood clots and chyme can be rapidly and effectively removed.

Description

Technical Field

[0001] The present invention relates to the technical field of surgical instruments, and in particular to a gastrointestinal content cutting and aspiration device. The present invention also relates to an endoscope having the gastrointestinal content cutting and aspiration device. Background Art

[0002] Most upper gastrointestinal bleeding can be diagnosed through endoscopic examination, and endoscopic hemostasis treatment can be performed when necessary, with an effective rate of 80% to 90%. The earlier the emergency endoscopic examination is performed, the higher the detection rate of active bleeding lesions. However, some difficulties are often encountered during endoscopic diagnosis and treatment. For example, some patients have large amounts of bleeding and rapid bleeding. The blood in the gastrointestinal tract will form blood clots in a short period of time, hindering the insertion of the endoscope and covering the bleeding focus. Statistics show that when there is residual blood in the gastric cavity, 6.3% of patients have poor endoscopic vision. This seriously affects endoscopic diagnosis and treatment, and sometimes even leads to the failure of endoscopic diagnosis and treatment. Patients are forced to undergo traditional treatments such as surgery, which is traumatic and slow to recover. There is an urgent need for clinical technology that can effectively remove gastrointestinal contents such as blood clots and food residues during endoscopic diagnosis and treatment to improve the success rate of treatment of massive gastrointestinal bleeding.

[0003] Regarding the method of clearing gastrointestinal contents, the negative pressure suction channel on the endoscope has a small diameter, mostly around 3 mm, and can only suck away smaller contents. In some related technologies, the endoscope can be used in conjunction with a gastric lavage machine, and a large-caliber multi-side hole flushing tube can be used to clear the contents of the gastrointestinal tract under direct endoscopic vision. However, it has certain disadvantages, such as affecting endoscopic operation and difficulty in handling larger gastrointestinal contents, making it difficult to quickly and effectively clear gastrointestinal contents during endoscopic examination. Summary of the invention

[0004] In view of this, the present invention aims to provide a gastrointestinal contents cutting and aspiration device to quickly and effectively remove gastrointestinal contents during endoscopic examination.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A gastrointestinal contents cutting and aspiration device capable of passing through a working channel of an endoscope, comprising:

[0007] The outer cylinder has a first notch at one axial end, and the first notch is arranged at a position not exceeding the central axis of the outer cylinder;

[0008] The inner cylinder body has a second notch at one axial end, is in contact with the inner wall of the outer cylinder body and is coaxially rotatably connected with the outer cylinder body. When the inner cylinder body rotates relative to the outer cylinder body, the second blade formed by the edge of the second notch can perform a shearing action together with the first blade formed by the edge of the first notch to cut off the gastrointestinal contents entering the second notch;

[0009] The negative pressure hose has one end connected to the inner cylinder and the other end connected to the negative pressure device, and can transport the contents of the severed gastrointestinal tract.

[0010] Furthermore, the gastrointestinal contents cutting and aspiration device comprises:

[0011] Drive unit;

[0012] A tubular transmission mechanism, which is sleeved outside the negative pressure hose and can bend along with the negative pressure hose;

[0013] The tubular transmission mechanism is connected between the inner cylinder and the driving part to transmit the power of the driving part to the inner cylinder.

[0014] Furthermore, the tubular transmission mechanism comprises:

[0015] The skeleton is wound into a tubular spiral structure;

[0016] The ribs extend along the axis direction of the frame, are fixedly connected between two adjacent circles of the frame, and are bent and concave toward the central axis of the frame;

[0017] The frame and the ribs are both made of elastic material.

[0018] Furthermore, the outer cylinder is fixedly connected with a sleeve, and the sleeve is sleeved outside the tubular transmission mechanism.

[0019] Furthermore, the first blade is provided with an outwardly expanding chamfered structure, and the second blade is provided with an inwardly expanding chamfered structure.

[0020] Furthermore, the first blade is provided with a first tooth structure, and the second blade is provided with a second tooth structure, and the first tooth structure and the second tooth structure are staggered in a direction perpendicular to the central axis of the outer cylinder.

[0021] Furthermore, the air outlet end of the negative pressure hose is connected to a collection box, and the collection box is connected to the negative pressure device through a pipeline. The pipeline is provided with a valve, and the valve is controlled to open and close by a foot switch.

[0022] Furthermore, the end of the outer cylinder where the first notch is provided is hemispherical.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] The gastrointestinal contents cutting and aspiration device described in the present invention is provided with an outer cylinder and a rotatable inner cylinder. When part of the gastrointestinal contents enter the second notch, under the action of the rotation of the inner cylinder, the edge of the first notch and the edge of the second notch can cooperate to cut off the gastrointestinal contents entering the second notch, and the cut gastrointestinal contents can be extracted through the negative pressure hose. The gastrointestinal contents can be quickly broken up and discharged, and the clearing ability is not affected by the size of the contents, thereby achieving fast and effective clearing of the gastrointestinal contents during endoscopic examination.

[0025] In addition, a tubular transmission mechanism capable of bending is provided, which can be used in conjunction with the bending of the endoscope. Through the power output of the driving unit, the tubular transmission mechanism can transmit power to the inner cylinder, so that the inner cylinder performs a shearing motion relative to the outer cylinder. The skeleton of the tubular transmission mechanism is set in a spiral shape, which can be freely bent with the negative pressure hose without affecting the suction work of the negative pressure hose. The ribs are used to increase the axial strength and torsion resistance of the tubular transmission mechanism, so that the tubular transmission mechanism is not easily over-stretched or compressed in the length direction when in use. The ribs are set in a shape that bends toward the central axis of the skeleton, so that when the skeleton is bent, the ribs located on the inner side of the skeleton bend further bend, and the ribs located on the outer side of the skeleton bend unfold to adapt to the negative pressure hose.

[0026] Secondly, a sleeve is provided to be fixedly connected to the outer cylinder body and sleeved outside the tubular transmission mechanism, so as to protect the tubular transmission mechanism and enhance the integrity of the gastrointestinal content cutting and suction device, so that the internal hose and tubular transmission mechanism have a certain auxiliary guiding effect when bending. An outwardly expanded chamfered structure is provided at the first blade, so that the blade of the first blade can be in a position to contact the inner cylinder body, and an inwardly expanded chamfered structure is provided at the second blade, so that the blade of the second blade can be in a position to contact the outer cylinder body. The two blades are in close contact, making it easier to cut the gastrointestinal contents. By providing a first toothed structure at the first blade, and a second toothed structure at the second blade and staggered with the first toothed structure, the gastrointestinal contents to be cut can be cut in sections when the first blade cooperates with the second blade to perform a shearing action, thereby improving the shearing efficiency.

[0027] Furthermore, a valve is provided on the negative pressure hose, and a foot-operated switch is provided with the valve, so that the suction function can be used more flexibly, and it is also more convenient to free both hands during the operation of endoscopic surgery. The end of the outer cylinder with the first notch is set to a hemispherical shape, which can facilitate the movement of the outer cylinder, and is not easy to scratch the gastrointestinal lining mucosa during the movement, and also makes it easier for gastrointestinal contents to enter the first notch.

[0028] Another object of the present invention is to provide an endoscope equipped with the gastrointestinal contents cutting and aspiration device as described above.

[0029] Further, the endoscope comprises:

[0030] An insertion portion, provided with the working channel;

[0031] The insertion portion comprises a tip portion and a bending portion, and the tip portion is detachably sleeved with a limiting cap;

[0032] An objective lens, a light-guiding lens and an outlet of the working channel are provided on the distal end portion; the gastrointestinal content cutting and aspiration device reaches the working channel outlet of the distal end portion through the working channel in the insertion portion, and the outer cylinder body is telescopically slidable along the rotation axis direction of the distal end portion and is penetrated by the limit cap, and the limit cap constitutes a rotation restriction on the outer cylinder body.

[0033] Furthermore, a limiting strip is provided on the outer wall of the outer cylinder along the axial direction, and the limiting cap is provided with a limiting groove adapted to the limiting strip.

[0034] The endoscope described in the present invention is equipped with the above-mentioned gastrointestinal content cutting and aspiration device, which can shear and discharge the gastrointestinal contents as the endoscope enters during endoscopic surgery on the gastrointestinal tract, making the endoscopic surgery smoother, especially in emergency endoscopic surgery, and can also quickly and effectively clear the gastrointestinal contents.

[0035] Secondly, a tip end portion is arranged at the insertion portion, so that the tip end portion can change the position angle of the objective lens, the light-guiding lens and the gastrointestinal content cutting and aspiration device under the action of the bending portion, so as to facilitate the observation of the inside of the stomach and intestine and adjust the cutting position of the gastrointestinal content cutting and aspiration device, and the adjustment is convenient and reliable; the retractable sliding connection limit cap of the outer cylinder body can keep the relative position of the first notch of the outer cylinder body and the tip end fixed, and will not affect the extension of the outer cylinder body when cutting is required.

[0036] Furthermore, an axial limit strip is provided on the outer wall of the outer cylinder, and a corresponding limit groove is provided on the limit cap. After the limit strip enters the limit groove, the outer cylinder cannot rotate relative to the front end portion. When the operator adjusts the front end portion, the outer cylinder can move with it, which is convenient for controlling the direction of the first notch and the feed of the outer cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0038] Figure 1 This is a schematic diagram of the overall structure of the gastrointestinal contents cutting and aspiration device according to the first embodiment of the present invention;

[0039] Figure 2 for Figure 1 A partial enlarged view of the middle A part;

[0040] Figure 3A schematic diagram of the internal structure of the sleeve according to the first embodiment of the present invention;

[0041] Figure 4 is a schematic diagram of the tubular transmission mechanism according to the first embodiment of the present invention;

[0042] Figure 5 This is a schematic structural diagram of the outer cylinder according to the first embodiment of the present invention;

[0043] Figure 6 This is a schematic structural diagram of the inner cylinder according to the first embodiment of the present invention;

[0044] Figure 7 This is a schematic structural diagram of an endoscope according to a second embodiment of the present invention;

[0045] Figure 8 This is a schematic diagram of the connection relationship between the insertion portion and the gastrointestinal content cutting and aspiration device according to the second embodiment of the present invention;

[0046] Fig. 9 This is a schematic diagram of the connection structure between the limiting cap and the outer cylinder according to the second embodiment of the present invention.

[0047] Description of reference numerals:

[0048] 1. Outer cylinder;

[0049] 101, first notch; 102, first knife edge; 1021, first tooth structure; 103, limit strip;

[0050] 2. Inner cylinder;

[0051] 201, second notch; 202, second knife edge; 2021, second tooth-like structure;

[0052] 3. Negative pressure hose;

[0053] 4. Driving unit;

[0054] 5. Tubular transmission mechanism;

[0055] 501, frame; 502, ribs;

[0056] 6. Casing;

[0057] 7. Valve;

[0058] 8. Foot switch;

[0059] 9. Collection box;

[0060] 10. Tip end;

[0061] 11. Objective lens;

[0062] 12. Light guide lens;

[0063] 13. Insertion part;

[0064] 14. Bending part;

[0065] 15. Limiting cap;

[0066] 1501, limiting groove; 1502, inserting strip; 1503, guiding slope. DETAILED DESCRIPTION

[0067] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0068] In the description of the present invention, it should be noted that if there are terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc., they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first", "second", etc., they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0069] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installed", "connected", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0070] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0071] Embodiment 1

[0072] The present embodiment relates to a gastrointestinal contents cutting and aspiration device for quickly and effectively removing gastrointestinal contents during endoscopic examination.

[0073] In terms of overall structure, the gastrointestinal content cutting and aspiration device of this embodiment can pass through the working channel of the endoscope, and includes an outer cylinder, an inner cylinder and a negative pressure hose.

[0074] A first notch is provided at one axial end of the outer cylinder, and the setting position of the first notch does not exceed the central axis of the outer cylinder. A second notch is provided at one axial end of the inner cylinder, which is in contact with the inner wall of the outer cylinder and is coaxially rotatably connected with the outer cylinder. When the inner cylinder rotates relative to the outer cylinder, the second blade formed by the edge of the second notch can work together with the first blade formed by the edge of the first notch to complete the shearing action, so as to cut off the gastrointestinal contents entering the second notch. One end of the negative pressure hose is connected to the inner cylinder, and the other end is connected to the negative pressure device, so as to transport the cut gastrointestinal contents.

[0075] As configured above, the gastrointestinal contents cutting and aspiration device of this embodiment is provided with an outer cylinder and a rotatable inner cylinder. When the gastrointestinal contents partially enter the second notch, under the action of the rotation of the inner cylinder, the edge of the first notch and the edge of the second notch can cooperate to cut off the gastrointestinal contents entering the second notch, and extract the cut gastrointestinal contents through the negative pressure hose, which can quickly break up the gastrointestinal contents and discharge them, and the clearing ability is not affected by the size of the contents. The gastrointestinal contents cutting and aspiration device can pass through the working channel of the endoscope, so that the end of the outer cylinder enters the gastrointestinal tract, cooperates with the endoscope to perform gastrointestinal contents clearing operations, such as blood clots, chyme, etc., and clears and discharges them from the human body, thereby achieving rapid and effective gastrointestinal tract contents clearing during endoscopic examination, so as to facilitate subsequent endoscopic surgery.

[0076] Based on the above overall introduction, specifically, refer to Figures 1 to 3 As shown, the first notch 101 is set at a position not exceeding the central axis of the outer cylinder 1, which can ensure that during the rotation of the inner cylinder 2, when the first notch 101 and the second notch 201 are staggered and do not overlap, the gastrointestinal environment is separated from the negative pressure hose 3 to enhance the negative pressure effect in the negative pressure hose 3. The inner cylinder 2 continues to rotate, which can form an enhanced pulse suction effect, which helps to improve the suction capacity. Compared with the conventional method of using water flushing and suction to clean the gastrointestinal contents, this embodiment cooperates with the outer cylinder 1 and the inner cylinder 2 to shear, which can not only chop up the larger gastrointestinal contents, but also the chopped gastrointestinal contents are not easy to be blocked when passing through the negative pressure hose 3, which can make the gastrointestinal contents removal process smoother.

[0077] Among them, regarding the power part of the gastrointestinal content cutting and aspiration device, it includes a driving unit 4 and a tubular transmission mechanism 5. The tubular transmission mechanism 5 is sleeved outside the negative pressure hose 3 and can be bent with the negative pressure hose 3. The tubular transmission mechanism 5 is connected between the inner cylinder 2 and the driving unit 4 to transmit the power of the driving unit 4 to the inner cylinder 2. The tubular transmission mechanism 5 that can be bent is provided, and can be used in conjunction with the bending of the endoscope. Through the power output of the driving unit 4, the tubular transmission mechanism 5 can transmit power to the inner cylinder 2, so that the inner cylinder 2 performs a shearing motion of rotating relative to the outer cylinder 1.

[0078] Specifically, refer to Figure 3 and Figure 4 As shown, the tubular transmission mechanism 5 includes a skeleton 501 and ribs 502, and the skeleton 501 is wound into a tubular spiral structure. The ribs 502 extend along the axial direction of the skeleton 501, are fixedly connected between two adjacent circles of the skeleton 501, and are bent and recessed toward the central axis of the skeleton 501. The skeleton 501 and the ribs 502 are both made of elastic materials, and deform to adapt to the bending curvature of the negative pressure hose 3. The skeleton 501 of the tubular transmission mechanism 5 is set to a spiral shape, which can be freely bent with the negative pressure hose 3 without affecting the suction work of the negative pressure hose 3. The ribs 502 are used to increase the axial strength and torsion resistance of the tubular transmission mechanism 5, so that the tubular transmission mechanism 5 is not easy to be over-stretched or compressed in the length direction when in use, so that the inner cylinder 2 can be rotated forward or reversely. Secondly, the ribs 502 are set to be bent toward the central axis of the frame 501, so that when the frame 501 is bent, the ribs 502 located on the inner side of the frame 501 are further bent, and the ribs 502 located on the outer side of the bent frame 501 are unfolded to adapt to the bending of the negative pressure hose 3. The ribs 502 of this embodiment are provided with four ribs 502 on each circle of the frame 501, and the ribs 502 on each circle of the frame 501 are sequentially opposite along the extension direction of the frame 501, which has good structural stability. Of course, the number and position of the ribs 502 on each circle of the frame 501 can be adjusted according to actual needs without other restrictions. The material of the frame and the ribs can be elastic metal sheets or elastic non-toxic plastic materials. In this embodiment, stainless steel is preferably used, which has good elastic properties and is relatively durable.

[0079] It should also be noted that the skeleton 501 can also be a plurality of annular structures, and the ribs 502 are connected between the annular structures, which can also play a role in transmitting the inner cylinder 2 when the negative pressure hose 3 is bent, but the stability of the structure is poorer than that of the present embodiment.

[0080] Secondly, in order to facilitate the use of the gastrointestinal content cutting and aspiration device, the outer cylinder 1 is fixedly connected with a sleeve 6, and the sleeve 6 is sleeved outside the tubular transmission mechanism 5. The sleeve 6 fixedly connected to the outer cylinder 1 is sleeved outside the tubular transmission mechanism 5, which can protect the tubular transmission mechanism 5 and enhance the integrity of the gastrointestinal content cutting and aspiration device, so that the internal hose and the tubular transmission mechanism 5 have a certain auxiliary guiding effect when bending.

[0081] Furthermore, based on improving the ability of the first blade 102 and the second blade 202 to cooperate in shearing, Figure 5 and Figure 6As shown, the first blade 102 is provided with an outwardly expanding chamfer structure, i.e., an outer chamfer, and the cross-sectional size at the chamfer gradually increases in the direction away from the central axis of the outer cylinder 1; the second blade 202 is provided with an inwardly expanding chamfer structure, i.e., an inner chamfer, and the cross-sectional size at the chamfer gradually decreases in the direction away from the central axis of the inner cylinder 2. The outwardly expanding chamfer structure is provided on the first blade 102, so that the blade of the first blade 102 is in a position to contact the inner cylinder 2, and the inwardly expanding chamfer structure is provided on the second blade 202, so that the blade of the second blade 202 is in a position to contact the outer cylinder 1, and the two blades are in close contact, making it easier to cut off the gastrointestinal contents.

[0082] In specific implementation, the inclined surface of the chamfered structure of the first blade 102 and the inclined surface of the chamfered structure of the second blade 202 can both guide the gastrointestinal contents to be sheared, and at the same time can reduce the resistance of the first blade 102 and the second blade 202 during shearing, thereby strengthening the shearing effect of the member. In this embodiment, the first blade 102 is symmetrically arranged on both sides of the first notch 101, that is, both side edges of the first notch 101 are blades, and similarly, the second blade 202 is symmetrically arranged on both sides of the second notch 201. With such an arrangement, the inner cylinder 2 can shear the gastrointestinal contents when rotating forward or reversely.

[0083] Specifically, the first blade 102 is provided with a first tooth structure 1021, and the second blade 202 is provided with a second tooth structure 2021. The first tooth structure 1021 and the second tooth structure 2021 are staggered in a direction perpendicular to the central axis of the outer cylinder 1. By providing the first tooth structure 1021 on the first blade 102, and providing the second tooth structure 2021 on the second blade 202 and staggered with the first tooth structure 1021, when the first blade 102 cooperates with the second blade 202 to perform a shearing action, the sheared gastrointestinal contents can be sheared in sections, thereby improving the shearing efficiency. In this embodiment, the top of the first tooth structure 1021 is a pointed tip, and the bottom end is smoothly transitioned; the top of the second tooth structure 2021 is a pointed tip, and the angle transition between the bottom ends of adjacent second tooth structures 2021 helps to improve the shearing ability.

[0084] Furthermore, the air outlet end of the negative pressure hose 3 is connected to a collection box 9, and the collection box 9 is connected to the negative pressure device through a pipeline. The pipeline is provided with a valve 7, and the valve 7 is controlled to open and close by a foot switch 8. A joint is provided at the end of the pipeline of the collection box 9, and the joint can be directly plugged into the negative pressure line interface of the operating room. The valve 7 is in a normally closed state and is an electric opening and closing type. The foot switch 8 is electrically connected to the valve 7. When the operator steps on the foot switch 8, the valve 7 opens. The air outlet end of the negative pressure hose 3 is inserted into the collection box 9 and is rotatably sealed with the collection box 9. For the rotatable sealing structure, a sealing ring or a joint that can rotate synchronously with the negative pressure hose 3 can be provided on the collection box 9 to achieve this.

[0085] In specific implementation, when the operator needs to perform cutting and suction operation on the gastrointestinal contents, the operator steps on the foot switch 8, the valve 7 can be opened, and the cut gastrointestinal contents will be sent to the collection box 9 under the action of air pressure, and fall to the bottom of the collection box 9 due to its own gravity for easy collection. The provision of the foot switch 8 can make the suction function more flexible, and it is also more convenient to free both hands during the operation of endoscopic surgery.

[0086] In addition, in order to make the outer cylinder 1 more flexible to use, the end of the outer cylinder 1 with the first notch 101 is hemispherical. The end of the outer cylinder 1 with the first notch 101 is hemispherical, which can facilitate the movement of the outer cylinder 1, and is not easy to scratch the gastrointestinal lining mucosa during the movement, and also makes it easier for gastrointestinal contents to enter the first notch 101.

[0087] The gastrointestinal contents cutting and aspiration device of this embodiment can shear the gastrointestinal contents by providing an outer cylinder 1 and an inner cylinder 2 that can rotate relative to each other. The cut gastrointestinal contents can be quickly discharged from the body by cooperating with the negative pressure hose 3. The gastrointestinal contents can also be better cleared when they are large, thereby achieving rapid and effective removal of gastrointestinal contents during endoscopic examination.

[0088] Embodiment 2

[0089] This embodiment relates to an endoscope, which is provided with the gastrointestinal content cutting and aspiration device in Embodiment 1. The endoscope in this embodiment is provided with the gastrointestinal content cutting and aspiration device, and can shear and discharge the gastrointestinal contents as the endoscope enters during endoscopic surgery of the gastrointestinal tract, so that the endoscopic surgery can be performed more smoothly, especially in emergency endoscopic surgery, and the gastrointestinal contents can be quickly and effectively removed.

[0090] Specifically, refer to Figures 7 to 9 As shown, the endoscope includes an insertion portion 13, and the insertion portion 13 is provided with a working channel. The insertion portion 13 includes a tip portion 10 and a bending portion 14, and the tip portion 10 is detachably provided with a limit cap 15. The tip portion 10 is provided with an objective lens 11, a light guide lens 12 and an outlet of the working channel. The operating bending portion 14 can change the direction of the tip portion 10 by rotating. The gastrointestinal content cutting and aspiration device reaches the working channel outlet of the tip portion 10 through the working channel in the insertion portion 13, and the outer cylinder 1 can be telescopically slid along the rotation axis direction of the tip portion 10 and penetrated on the limit cap 15, and the limit cap 15 constitutes a rotation restriction on the outer cylinder 1.

[0091] As described above, the tip portion 10 is arranged at the insertion portion 13, so that the tip portion 10 can change the position angle of the objective lens 11, the light guide lens 12 and the gastrointestinal content cutting and aspiration device under the action of the bending portion 14, so as to facilitate the observation of the inside of the stomach and adjust the cutting position of the gastrointestinal content cutting and aspiration device, and the adjustment is convenient and reliable; the outer cylinder 1 is retractably slidably connected to the limiting cap 15, so that the relative position of the first notch 101 of the outer cylinder 1 and the tip portion 10 can be kept fixed, and the extension of the outer cylinder 1 is not affected when the cutting is required. The limiting cap 15 is transparent, which can reduce the impact on the field of vision.

[0092] In order to facilitate the operation of the gastrointestinal content cutting and aspiration device by the operator, the outer wall of the outer cylinder 1 is provided with a limit strip 103 in the axial direction, and the limit cap 15 is provided with a limit groove 1501 adapted to the limit strip 103. An axial limit strip 103 is provided on the outer wall of the outer cylinder 1, and a corresponding limit groove 1501 is provided on the limit cap 15. After the limit strip 103 enters the limit groove 1501, the outer cylinder 1 cannot rotate relative to the front end 10. When the operator adjusts the bending part 14, the outer cylinder 1 can be moved with it, which is convenient for controlling the direction of the first notch 101 and the cutting of the outer cylinder 1. The limit cap 15 of this embodiment has an insert 1502, which can be inserted into the outlet of the working channel to ensure the relative position of the limit cap 15 and the front end 10. The insert 1502 is provided with a flaring structure at the entrance of the limiting groove 1501, including two guiding slopes 1503, which can guide the insert 1502 into the limiting groove 1501. The first notch 101 of the outer cylinder 1 is oriented toward the central axis of the limiting cap 15, so that the gastrointestinal content cutting and suction device is not easy to suck the mucosa during the suction operation, and is safer to use.

[0093] It should be noted that the front end may also be provided with common endoscope accessory structures such as an air / water nozzle, which will not be described in detail in this embodiment.

[0094] The endoscope of this embodiment can shear and discharge gastrointestinal contents as the endoscope is inserted during endoscopic surgery on the gastrointestinal tract, making the endoscopic surgery smoother without the need to repeatedly insert and withdraw the endoscope. Especially during emergency endoscopic surgery, when the patient's gastrointestinal condition is not fully known, the gastrointestinal contents can be quickly and effectively cleared, thereby improving the rapid cleaning capability of the endoscope.

[0095] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A gastrointestinal contents cutting and aspiration device capable of passing through the working channel of an endoscope, characterized in that: include: The outer cylinder (1) is provided with a first notch (101) at one axial end, and the first notch (101) is arranged at a position not exceeding the central axis of the outer cylinder (1); The inner cylinder (2) is provided with a second notch (201) at one axial end, is in contact with the inner wall of the outer cylinder (1) and is coaxially rotatably connected to the outer cylinder (1); when the inner cylinder (2) rotates relative to the outer cylinder (1), a second cutting edge (202) formed at the edge of the second notch (201) can perform a shearing action together with a first cutting edge (102) formed at the edge of the first notch (101) to cut off gastrointestinal contents entering the second notch (201); A negative pressure hose (3) is connected to the inner cylinder (2) at one end and to the negative pressure device at the other end, and is capable of conveying the contents of the severed gastrointestinal tract.

2. The gastrointestinal contents cutting and aspiration device according to claim 1, characterized in that: include: A driving unit (4); A tubular transmission mechanism (5) is sleeved outside the negative pressure hose (3) and can bend along with the negative pressure hose (3); The tubular transmission mechanism (5) is connected between the inner cylinder (2) and the driving part (4) to transmit the power of the driving part (4) to the inner cylinder (2).

3. The gastrointestinal contents cutting and aspiration device according to claim 2, characterized in that: The tubular transmission mechanism (5) comprises: The skeleton (501) is wound into a tubular spiral structure; The rib (502) extends along the axis direction of the frame (501), is fixedly connected between two adjacent circles of the frame (501), and is bent and concave toward the central axis of the frame (501); The frame (501) and the ribs (502) are both made of elastic material.

4. The gastrointestinal contents cutting and aspiration device according to claim 2, characterized in that: The outer cylinder (1) is fixedly connected with a sleeve (6), and the sleeve (6) is sleeved outside the tubular transmission mechanism (5).

5. The gastrointestinal contents cutting and aspiration device according to claim 1, characterized in that: The first blade (102) is provided with an outwardly expanding chamfered structure, and the second blade (202) is provided with an inwardly expanding chamfered structure.

6. The gastrointestinal contents cutting and aspiration device according to claim 5, characterized in that: The first blade (102) is provided with a first tooth-like structure (1021), and the second blade (202) is provided with a second tooth-like structure (2021), and the first tooth-like structure (1021) and the second tooth-like structure (2021) are arranged alternately in a direction perpendicular to the central axis of the outer cylinder (1).

7. The gastrointestinal contents cutting and aspiration device according to claim 1, characterized in that: The air outlet end of the negative pressure hose (3) is connected to a collecting box (9), the collecting box (9) is connected to the negative pressure device through a pipeline, the pipeline is provided with a valve (7), and the valve (7) is controlled to open and close by a foot switch (8); and / or, The end of the outer cylinder (1) where the first notch (101) is provided is hemispherical.

8. An endoscope, characterized in that: The endoscope is provided with a gastrointestinal contents cutting and aspiration device as described in any one of claims 1 to 7.

9. The endoscope according to claim 8, characterized in that: include: An insertion portion (13) provided with the working channel; The insertion portion (13) comprises a front end portion (10) and a bending portion (14); the front end portion (10) is detachably provided with a limiting cap (15); The front end portion (10) is provided with an objective lens (11), a light-guiding lens (12) and the outlet of the working channel; the gastrointestinal content cutting and aspiration device reaches the outlet of the working channel of the front end portion (10) through the working channel in the insertion portion (13); the outer cylinder (1) is telescopically slidable along the rotation axis direction of the front end portion (10) and is penetrated by the limit cap (15); the limit cap (15) constitutes a rotation limit for the outer cylinder (1).

10. The endoscope according to claim 9, characterized in that: The outer wall of the outer cylinder (1) is provided with a limiting strip (103) along the axial direction, and the limiting cap (15) is provided with a limiting groove (1501) adapted to the limiting strip (103).

Images