A debridement and drainage device for necrotic lesions in acute severe pancreatitis

Abstract

The present invention provides a debridement and drainage device for necrotic foci of acute severe pancreatitis, belonging to the technical field of medical devices. It comprises a minimally invasive channel, a puncture device is inserted in the minimally invasive channel, a drainage tube is inserted in the puncture device, one end of the drainage tube is fixedly connected to a drainage head, and the other end of the drainage tube is fixedly connected to an operating handle; the drainage component is used to assist the user in cleaning the necrotic tissue in the necrotic focus. The present invention provides a drainage component, and the setting of the drainage component can assist the operator in cutting and cleaning the necrotic tissue on the organ. For some necrotic tissue that has not completely separated from the organ, the phenomenon of adhesion with the organ is not conducive to the operator to flush and clean the necrotic material. At this time, the operator can cut it with the help of the drainage component, so that the tissue can be more easily washed down by water, ensuring the thoroughness of tissue cleaning and the efficiency of the cleaning process.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a device for debridement and drainage of necrotic foci of acute severe pancreatitis. Background Art

[0002] Severe acute pancreatitis (SAP) is a serious disease that usually requires immediate medical attention because of its high mortality rate. According to statistics, the mortality rate of severe pancreatitis is as high as 30% to 50%. The necrotic lesions of severe acute pancreatitis usually contain necrosis of pancreatic parenchyma or peripancreatic tissue, which can occur simultaneously or in only one of them. The necrotic material may include unequal amounts of liquid and non-liquid components, which usually appear as non-enhanced or low-enhanced areas on CT scans.

[0003] In the treatment of SAP, endoscopic transluminal drainage (ETD) and direct endoscopic necrosectomy (DEN) are two methods that are gradually applied in clinical practice. At present, the removal of necrotic material generally adopts the method of clamping to remove necrotic tissue. This method has the potential for massive bleeding. Since some necrotic tissue will not be completely separated from the organ after necrosis, it needs to be removed during clamping. If it is directly removed by clamping, it may cause tearing damage to the organ, which may lead to massive bleeding and irreversible damage to the patient. Therefore, the present invention provides a debridement and drainage device for necrotic lesions of acute severe pancreatitis to meet the needs. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a debridement and drainage device for necrotic foci of acute severe pancreatitis by setting a drainage component. The setting of the drainage component can assist the operator in cutting and cleaning the necrotic tissue on the organ. For some necrotic tissue that has not completely separated from the organ, the phenomenon of adhesion with the organ will be unfavorable for the operator to flush and clean the necrotic material. At this time, the operator can use the drainage component to cut it, so that the tissue can be more easily washed down by water, ensuring the thoroughness of tissue cleaning and the efficiency of the cleaning process. The above setting can solve the problem that the existing drainage device is difficult to clean the necrotic tissue that has not completely separated from the organ during use.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A device for debridement and drainage of necrotic foci of acute severe pancreatitis comprises a minimally invasive channel, a puncture device is inserted in the minimally invasive channel, a drainage tube is inserted in the puncture device, one end of the drainage tube is fixedly connected to a drainage head, a water outlet is provided on the drainage head, and the other end of the drainage tube is fixedly connected to an operating handle; a drainage component, the drainage component is used to assist a user in cleaning necrotic tissue in the necrotic focus, and the drainage component is respectively connected to the drainage tube, the drainage head and the operating handle.

[0007] Optionally, the drainage assembly includes an inner septum fixedly connected to the drainage head, a support frame fixedly connected to the inner wall of the inner septum, a rotating rod rotatably connected to the support frame, one end of the rotating rod is rotatably connected to a mounting frame, a cutting knife is clamped at the bottom of the mounting frame, a pulling wire is installed at the other end of the rotating rod, one end of the pulling wire is fixedly connected to a second spring sheet, and a first spring sheet is fixedly connected to the operating handle.

[0008] Optionally, a water flow cavity is opened between the inner septum and the drainage head, the water outlet is located at the bottom of the water flow cavity, and the end of the drainage tube close to the operating handle is fixedly connected to a water inlet branch pipe, and the water inlet branch pipe is used to inject warm water into the drainage tube.

[0009] Optionally, a support rod is fixedly connected to the support frame, the overall structure of the support frame is a circular frame body, a rotating part is fixedly connected to the support frame, and positioning blocks are fixedly connected to both ends of the rotating part.

[0010] Optionally, a clamping portion is fixedly connected to the middle position of the rotating rod, the clamping portion is a C-shaped elastic structure, and a lightweight groove is provided on the clamping portion.

[0011] Optionally, one end of the mounting frame is two L-shaped sleeve structures, and the rotating rod and the mounting frame are connected and fixed by means of the L-shaped sleeve structure, and the L-shaped sleeve structure is an elastic structure.

[0012] Optionally, a mounting block is fixedly connected to the bottom of the mounting frame, a first limit block is fixedly connected to the top of the mounting block, a second limit block is fixedly connected to the middle position of the mounting block, and a limit groove matching the contour of the second limit block is provided on the cutting knife.

[0013] Optionally, a reset plate is clamped at one end of the mounting frame, a bending portion is fixedly connected to the middle position of the reset plate, the bending portion is a curved elastic structure, one end of the reset plate is fixedly connected to a fixing portion, and the other end of the reset plate is fixed to the inner wall of the inner spacer.

[0014] Optionally, one end of the first elastic sheet is fixedly connected to a chuck, one end of the second elastic sheet is fixedly connected to a pull sleeve, and the second elastic sheet and the pulling wire are fixedly connected via the pull sleeve.

[0015] Optionally, the first spring sheet and the second spring sheet are integrally manufactured structures, and both the first spring sheet and the second spring sheet are elastic structures.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] In the above scheme, by setting up a drainage component, the setting of the drainage component can assist the operator in cutting and cleaning the necrotic tissue on the organs. For some necrotic tissue that has not completely separated from the organs, the adhesion to the organs will be unfavorable for the operator to flush and clean the necrotic material. At this time, the operator can use the drainage component to cut it, thereby making it easier for the tissue to be washed down by water, ensuring the thoroughness of the tissue cleaning and the efficiency of the cleaning process.

[0018] By setting an inner septum in the drainage assembly, the drainage head has a two-layer structure, in which the inner septum is located inside the drainage head. The water flowing out of the drainage tube will eventually enter the water flow cavity, and the water outlet is opened at the bottom of the water flow cavity. This setting can ensure that the water flows out from the bottom of the water flow cavity and no residual water will appear in the drainage head.

[0019] By arranging the first spring sheet and the second spring sheet in the drainage assembly, when the user uses the drainage device to clean the necrotic material in the necrotic focus, if some necrotic tissue that has not completely separated from the organ is found, the user can press the second spring sheet with his fingers to allow the pull sleeve to tighten all the pulling wires at the same time. The tightening of the pulling wires will drive the rotating rod to rotate. During the rotation of the rotating rod, the cutting knife will extend from the drainage head. At this time, the operator can use the extended cutting knife to cut the tissue, thereby facilitating the cleaning of some necrotic tissue that has not completely separated from the organ. The arrangement of the above structure makes it easier to extend the cutting knife out of the drainage head, and the extension distance and angle of each cutting knife are consistent, and each cutting knife is also synchronously extended from the drainage head.

[0020] By setting a mounting frame in the drainage component, the cutting knife and the mounting frame are not an integrated fixed structure, and the two are assembled and fixed by a mounting block. The fixing principle is similar to the fixing method of existing scalpels and surgical blades. The reason for adopting such a fixing method is that medical staff themselves are familiar with the installation method and installation skills of scalpels and surgical blades. Therefore, the installation method of the cutting knife here does not require the operator to learn and master it separately, thereby improving the practicality of the drainage component, and the structure is simple and the installation is efficient.

[0021] By arranging a reset plate in the drainage assembly, since the curved portion in the middle of the reset plate is a curved elastic structure, it can be deformed under the pulling action of an external force. When the rotating rod rotates to drive the cutting knife to extend out of the drainage head, the reset plate is deformed, and a reverse pulling force is applied to the rotating rod during the deformation process. When the operator stops applying force to the pulling sleeve, the rotating rod will return to its initial position under the elastic action of the reset plate, and the cutting knife will then retract into the drainage head again. This makes the position of the cutting knife flexible and the telescopic operation simple, which greatly improves the efficiency of cutting tissue during surgery. In addition, the flexible telescopic structure of the cutting knife ensures the safety of the drainage head, avoids damage to tissues and organs during the non-cutting period, and improves the safety of the drainage assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the debridement and drainage device for necrotic lesions in severe acute pancreatitis;

[0024] Figure 2 for Figure 1 A in the middle is an enlarged schematic diagram of the three-dimensional structure;

[0025] Figure 3 It is a schematic diagram of the enlarged three-dimensional structure of the drainage tube and the drainage head;

[0026] Figure 4 It is a schematic diagram of the cross-sectional structure of the drainage tube, the drainage head and the drainage assembly from the first perspective;

[0027] Figure 5 for Figure 4 The enlarged three-dimensional structure diagram at B in the middle;

[0028] Figure 6 It is a schematic diagram of the cross-sectional structure of the drainage tube, the drainage head and the drainage assembly from a second viewing angle;

[0029] Figure 7 for Figure 6 The enlarged three-dimensional structure diagram at C in the middle;

[0030] Figure 8 It is a schematic diagram of the enlarged three-dimensional structure of the support frame;

[0031] Fig. 9 It is a schematic diagram of the enlarged three-dimensional structure of the support frame, the rotating rod, the mounting frame and the cutting knife;

[0032] Fig.10 It is a schematic diagram of the enlarged three-dimensional structure of the rotating rod, the mounting frame and the cutting knife;

[0033] Fig.11 It is a schematic diagram of the three-dimensional structure of the mounting frame and the cutting knife from the first perspective;

[0034] Fig.12 This is a schematic diagram of the exploded three-dimensional structure of the mounting frame and cutting knife from the second perspective.

[0035] Reference numerals:

[0036] 1. Minimally invasive channel; 2. Trocar; 3. Operating handle; 301. First spring piece; 302. Second spring piece; 303. Chuck; 304. Pull sleeve; 4. Drainage tube; 5. Drainage head; 501. Water outlet; 502. Inner septum; 503. Water flow chamber; 6. Support frame; 601. Support rod; 602. Rotating part; 603. Positioning block; 7. Rotating rod; 701. Clamping part; 702. Reset piece; 703. Bending part; 704. Fixing part; 8. Mounting frame; 801. Mounting block; 802. First limit block; 803. Second limit block; 9. Cutting knife; 901. Limiting groove; 10. Pulling wire.

[0037] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0038] The following is a detailed description of a debridement and drainage device for necrotic lesions of acute severe pancreatitis provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0039] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0040] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0041] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0042] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0043] like Figures 1 to 12As shown, an embodiment of the present invention provides a debridement and drainage device for necrotic foci of acute severe pancreatitis, comprising a minimally invasive channel 1, a puncture device 2 is inserted in the minimally invasive channel 1, a drainage tube 4 is inserted in the puncture device 2, one end of the drainage tube 4 is fixedly connected to a drainage head 5, a water outlet 501 is opened on the drainage head 5, and the other end of the drainage tube 4 is fixedly connected to an operating handle 3; a drainage component, the drainage component is used to assist the user in cleaning necrotic tissue in the necrotic focus, the drainage component is respectively connected to the drainage tube 4, the drainage head 5 and the operating handle 3, one end of the drainage tube 4 close to the operating handle 3 is fixedly connected to a water inlet branch pipe, and the water inlet branch pipe is used to inject warm water into the drainage tube 4. The drainage device provided by the present application mainly uses the puncture device 2 to place the drainage tube 4 into the patient's body, and injects warm water into the drainage tube 4 with the help of the water inlet branch pipe. The warm water in the drainage tube 4 is finally discharged from the position of the water outlet 501 of the drainage head 5, and the discharged warm water can be used for the necrotic focus. The necrotic material near the dead focus is flushed and cleaned. A pipe for positioning a high-definition camera and a pipe for positioning a negative pressure suction tube are also inserted in the minimally invasive channel 1. When the operator flushes and cleans the necrotic material, he can use the high-definition camera to observe the position of the necrotic material inside the necrotic focus, and the necrotic tissue flushed down can be sucked out through the negative pressure suction tube. In this application, the use of high-definition cameras and negative pressure suction tubes is disclosed as prior art, so no further elaboration is made. This application also provides a drainage component. The setting of the drainage component can assist the operator in cutting and cleaning the necrotic tissue on the organ. For some necrotic tissue that has not completely separated from the organ, the phenomenon of adhesion with the organ will be unfavorable for the operator to flush and clean the necrotic material. At this time, the operator can use the drainage component to cut it, so that the tissue can be more easily flushed down by water, thereby ensuring the thoroughness of the tissue cleaning and the efficiency of the cleaning process.

[0044] As an implementation method in this embodiment, Figure 3 , Figure 4 and Figure 6 As shown, the drainage component includes an inner septum 502 fixedly connected to the drainage head 5, a water flow chamber 503 is opened between the inner septum 502 and the drainage head 5, and the water outlet 501 is located at the bottom of the water flow chamber 503. As mentioned above, the drainage component can cut the necrotic tissue. Specifically, the structure for cutting the necrotic tissue is mainly installed in the drainage head 5. The drainage head 5 has a two-layer structure, in which the inner septum 502 is located inside the drainage head 5. The water flowing out of the drainage tube 4 will eventually enter the water flow chamber 503. The water outlet 501 is opened at the bottom of the water flow chamber 503. This arrangement can ensure that the water flows out from the bottom of the water flow chamber 503, and no residual water will appear in the drainage head 5.

[0045] In this embodiment, if Figures 1 to 6 and Figures 8 to 10As shown, a support frame 6 is fixedly connected to the inner wall of the inner spacer 502, a support rod 601 is fixedly connected to the support frame 6, the overall structure of the support frame 6 is a circular frame, a rotating part 602 is fixedly connected to the support frame 6, both ends of the rotating part 602 are fixedly connected to positioning blocks 603, a rotating rod 7 is rotatably connected to the support frame 6, a clamping part 701 is fixedly connected at the middle position of the rotating rod 7, the clamping part 701 is a C-shaped elastic structure, a lightweight groove is provided on the clamping part 701, one end of the rotating rod 7 is rotatably connected to a mounting frame 8, a cutting knife 9 is clamped at the bottom of the mounting frame 8, a pulling wire 10 is installed at the other end of the rotating rod 7, one end of the pulling wire 10 is fixedly connected to the second spring piece 302, the operating handle 3 is fixedly connected to the first spring piece 301, and the first spring piece 301 is fixedly connected to the first spring piece 301. One end of the sheet 301 is fixedly connected to a chuck 303, one end of the second spring sheet 302 is fixedly connected to a pull sleeve 304, the second spring sheet 302 and the pulling wire 10 are fixedly connected by the pull sleeve 304, the first spring sheet 301 and the second spring sheet 302 are an integrally manufactured structure, the first spring sheet 301 and the second spring sheet 302 are elastic structures, in the drainage assembly, the necrotic tissue is mainly cut by a cutting knife 9, wherein the cutting knife 9 is mounted on a mounting frame 8, and the mounting frame 8 is mounted on a support frame 6 by a rotating rod 7, specifically, the support frame 6 is fixed to the inner wall of the inner septum 502 by a supporting rod 601, the overall structure of the support frame 6 is a circular contour, the rotating parts 602 on the support frame 6 are arranged in a circular array, and the rotating parts 602 are straight rods The rotating part 602 is clamped and fixed on the body structure by the clamping part 701. Since the rotating part 602 is a straight rod structure, such a configuration can ensure that the rotating rod 7 is more easily clamped on the rotating part 602 by the clamping part 701. Specifically, the clamping part 701 is an elastic structure with a C-shaped profile. When installing the rotating rod 7, the user can first bend the clamping part 701 outward to deform it outward, and then put the rotating part 602 on the support frame 6 into the clamping part 701. When the user stops bend the clamping part 701 outward, the clamping part 701 recovers its deformation under the action of elasticity. At this time, the rotating part 602 can be clamped and fixed by means of its elasticity and C-shaped profile. In addition, a lightweight groove is also provided on the clamping part 701. The setting of the lightweight groove can not only reduce the weight of the overall structure of the rotating rod 7, but also weaken the structure of the clamping part 701 by the opening of the lightweight groove, so that the user can more easily bend the clamping part 701. Positioning blocks 603 are set at both ends of the rotating part 602. When the clamping part 701 is fixed on the rotating part 602, the positioning blocks 603 just abut against the two ends of the clamping part 701. Since the installation position of the positioning block 603 can abut and limit the clamping part 701, the positioning block 603 can improve the stability of the structure of the clamping part 701 and prevent the phenomenon of misalignment during use. In addition, during the installation process, the positioning block 603 can assist the user to fix the relative position between the rotating part 602 and the clamping part 701.Improve the installation efficiency of the clamping portion 701.

[0046] Specifically, the mounting frame 8 is rotatably connected to one end of the rotating rod 7, wherein the cutting knife 9 is fixed at the bottom of the mounting frame 8, and the pulling wire 10 is inserted into one end of the rotating rod 7, and extends all the way through to the drainage tube 4, and finally passes through the end of the drainage tube 4 close to the operating handle 3. Multiple pulling wires 10 are finally gathered and fixed on the pulling sleeve 304. The operating handle 3 is similar to the shape of a pistol. Such a shape setting conforms to the gripping posture of the human palm, thereby making it more comfortable for the user to hold the operating handle 3, thereby improving the comfort and stability of the operator's hand during the operation. Two spring clips extend from the bottom of the operating handle 3, namely the first spring clip 301 and the second spring clip 302. The first spring clip 301 and the second spring clip 302 are both elastic structures with curved contours, wherein a chuck 303 is fixed at one end of the first spring clip 301, and the chuck 303 is an elastic structure with a C-shaped contour. The user can use Due to the characteristics of its contour and structure, the first spring piece 301 is fixed to the outer wall of the drainage tube 4. When the first spring piece 301 is fixed to the drainage tube 4, it can provide a certain holding force for the second spring piece 302, thereby facilitating the user to apply force to the second spring piece 302. A pull sleeve 304 is fixed to one end of the second spring piece 302. Therefore, the user can press the second spring piece 302 to deform the second spring piece 302 while using the holding force of the first spring piece 301 to position and slide the pull sleeve 304. During the sliding process of the pull sleeve 304, all the pulling wires 10 will be pulled. Since the pulling wires 10 are distributed in a circular array on the drainage tube 4, and the pull sleeve 304 also has a circular contour structure, such a structural setting enables each pulling wire 10 to be subjected to more uniform force when the user pulls the pull sleeve 304, thereby ensuring that the trajectory and distance of movement of each pulling wire 10 are consistent.

[0047] Furthermore, when the pulling wire 10 is pulled, the pulling wire 10 will drive the rotating rod 7 to rotate with the circular shape of the rotating part 602 as the axis. During the rotation of the rotating rod 7, the supporting frame 6 will be driven to rotate. During the rotation of the supporting frame 6, the cutting knife 9 fixed at one end will also move along with the supporting frame 6. At this time, the cutting knife 9 will extend out of the drainage head 5. After the cutting knife 9 is extended, the operator can use the extended cutting knife 9 to cut the tissue. Specifically, a notch (such as Figure 5 As shown), this notch not only allows the cutting knife 9 to extend from the drainage head 5, but also guides the position of the cutting knife 9 during the extension process, so that the cutting knife 9 can extend along the direction of the notch. It is worth mentioning that the cutting knives 9 and the pulling wires 10 are arranged in multiple groups in the drainage assembly, and the specific number can be determined according to the complexity of the operation. In the drawings provided in this application, the number of cutting knives 9 and pulling wires 10 is five.

[0048] With the arrangement of the above-mentioned structure, when the user uses the drainage device to clean the necrotic material in the necrotic focus, if some necrotic tissue that has not completely separated from the organ is found, the user can press the second spring piece 302 with his fingers to allow the pulling sleeve 304 to tighten all the pulling wires 10 at the same time. During the tightening of the pulling wires 10, the rotating rod 7 will be driven to rotate. During the rotation of the rotating rod 7, the cutting knife 9 will extend from the drainage head 5. At this time, the operator can use the extended cutting knife 9 to cut the tissue, thereby facilitating the cleaning of some necrotic tissue that has not completely separated from the organ. The arrangement of the above-mentioned structure makes it easier to extend the cutting knife 9 out of the drainage head 5, and the extension distance and angle of each cutting knife 9 are consistent, and each cutting knife 9 is also synchronously extended out of the drainage head 5.

[0049] In this embodiment, if Figures 9 to 12 As shown, one end of the mounting bracket 8 is a sleeve structure with two L-shaped profiles, and the rotating rod 7 and the mounting bracket 8 are connected and fixed by means of the sleeve structure with an L-shaped profile, and the sleeve structure with an L-shaped profile is an elastic structure. The bottom of the mounting bracket 8 is fixedly connected with a mounting block 801, the top of the mounting block 801 is fixedly connected with a first limiting block 802, and the middle position of the mounting block 801 is fixedly connected with a second limiting block 803. The cutting knife 9 is provided with a limiting groove 901 that matches the profile of the second limiting block 803. Since the two sleeve structures with L-shaped profiles on the mounting bracket 8 are sleeve elastic structures with L-shaped profiles, when the user mounts the mounting bracket 8 on the rotating rod 7, the user can first The two L-shaped sleeve structures are pressed inward, and then the sleeve-shaped structures are sleeved and clamped onto the rotating rod 7. After the sleeve is sleeved, the pressing of the L-shaped sleeve structure is stopped. At this time, with the help of elastic performance, the two L-shaped sleeve structures will firmly resist and be clamped onto the rotating rod 7, thereby forming an installation fixation. Due to the rotating sleeve connection between the mounting frame 8 and the rotating rod 7, the cutting knife 9 can be extended from the drainage head 5 during the rotation of the rotating rod 7. The arrangement of the above structure can not only greatly improve the assembly efficiency between the mounting frame 8 and the rotating rod 7, but also ensure that the cutting knife 9 can be smoothly extended from the drainage head 5 during the rotation of the rotating rod 7.

[0050] Furthermore, the cutting knife 9 and the mounting frame 8 are not an integrated fixed structure, but are assembled and fixed by the mounting block 801. The fixing principle is similar to the fixing method of the existing scalpel and surgical blade. The reason for adopting such a fixing method is that the medical staff themselves are familiar with the installation method and installation skills of the scalpel and surgical blade. Therefore, the installation method of the cutting knife 9 here does not require the operator to learn and master it separately, thereby improving the practicality of the drainage component. Specifically, the contour of the upper limit groove 901 on the cutting knife 9 coincides with the contour of the first limit block 802 on the mounting block 801. During the installation process, the operator first aligns the limit groove 901 with the first limit block 802 and then slides the limit groove 901 into the first limit block 802 until one end of the cutting knife 9 contacts the second limit block 803. At this time, the cutting knife 9 is simultaneously fixed by the first limit block 802 and the second limit block 803 to achieve a fixing effect. The above-mentioned installation method is consistent with the installation method of the existing scalpel and surgical blade, has a simple structure, and is highly efficient in installation.

[0051] In this embodiment, if Figure 6 , Figure 7 and Fig. 9 As shown, a reset sheet 702 is clamped at one end of the mounting frame 8, and a bent portion 703 is fixedly connected to the middle position of the reset sheet 702, and the bent portion 703 is a curved elastic structure. A fixed portion 704 is fixedly connected to one end of the reset sheet 702, and the other end of the reset sheet 702 is fixed to the inner wall of the inner septum 502. As mentioned above, the user can rotate the rotating rod 7 by pulling the pulling wire 10, and at the same time, the cutting knife 9 extends from the drainage head 5. The reset sheet 702 is also installed on the mounting frame 8. Since the bent portion in the middle of the reset sheet 702 is a curved elastic structure, it can be deformed under the pulling action of an external force. One end of the reset sheet 702 is fixed to the inner wall of the inner septum 502, and the other end is fixed to the inner wall of the inner septum 502. The fixing portion 704 is clamped and fixed on the mounting frame 8. When the rotating rod 7 rotates to drive the cutting knife 9 to extend out of the drainage head 5, the reset plate 702 is deformed. During the deformation, a reverse pulling force is applied to the rotating rod 7. When the operator stops applying force to the pulling sleeve 304, the rotating rod 7 will return to its initial position under the elastic action of the reset plate 702. At this time, the cutting knife 9 will retract into the drainage head 5 again. This makes the position of the cutting knife 9 flexible and the operation of the extension is simple, which greatly improves the efficiency of cutting tissue during the operation. In addition, the flexible structural setting of the cutting knife 9 ensures the safety of the drainage head 5, avoids damage to tissues and organs during the non-cutting period, and improves the safety of the drainage component.

[0052] The working principle of the technical solution provided by the present invention is as follows: when in use, the drainage tube 4 is first inserted into the patient's body using the puncture device 2, and then warm water is injected into the drainage tube 4 with the help of the water inlet branch pipe. The warm water in the drainage tube 4 is finally discharged from the position of the water outlet 501 of the drainage head 5. The discharged warm water can be used to flush and clean the necrotic material near the necrotic focus. When flushing and cleaning the necrotic material, the operator can use a high-definition camera to observe the position of the necrotic material inside the necrotic focus, and the flushed necrotic tissue can be suctioned and discharged through a negative pressure suction tube.

[0053] When the user uses the drainage device to clean the necrotic material in the necrotic focus, some necrotic tissue that has not completely separated from the organ is found. At this time, the user can press the second spring piece 302 with a finger to let the pull sleeve 304 tighten all the pulling wires 10 at the same time. Since the pulling wires 10 are distributed in a circular array on the drainage tube 4, and the pull sleeve 304 is also a circular contour structure, such a structural setting allows the user to pull the pull sleeve 304. Each pulling wire 10 is subjected to a more uniform force, thereby ensuring that the trajectory and distance of each pulling wire 10 are consistent. During the tightening of the pulling wire 10, the rotating rod 7 will be driven to rotate with the circle of the rotating part 602 as the axis. During the rotation of the rotating rod 7, the support frame 6 will be driven to rotate. During the rotation of the support frame 6, the cutting knife 9 fixed at one end thereof will also move with the support frame 6. At this time, the cutting knife 9 will extend from the drainage head 5. After the cutting knife 9 is extended, the operator can use the extended cutting knife 9 to cut the tissue, thereby facilitating The necrotic tissue that has not completely separated from the organs is cleaned up. Since the curved portion in the middle of the reset sheet 702 is a curved elastic structure, it can be deformed under the pulling action of external force. One end of the reset sheet 702 is fixed on the inner wall of the inner septum 502, and the other end is clamped and fixed on the mounting frame 8 through the fixing portion 704. When the rotating rod 7 rotates to drive the cutting knife 9 to extend out of the drainage head 5, the reset sheet 702 is deformed, and a reverse pulling force is applied to the rotating rod 7 during the deformation. When the operator stops applying force to the pulling sleeve 304, the rotating rod 7 will return to its initial position under the elastic action of the reset sheet 702. At this time, the cutting knife 9 will retract into the drainage head 5 again, so that the position of the cutting knife 9 can be freely extended and retracted, and the operation of the extension and retraction is simple, which greatly improves the efficiency of cutting tissue during the operation. In addition, the structural setting of the cutting knife 9 that can be freely extended and retracted ensures the safety of the drainage head 5, avoids damage to tissues and organs during the non-cutting period, and improves the safety of the drainage component.

[0054] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0055] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A device for debridement and drainage of necrotic lesions in acute severe pancreatitis, comprising a minimally invasive channel, characterized in that: A puncture device is inserted into the minimally invasive channel, a drainage tube is inserted into the puncture device, one end of the drainage tube is fixedly connected to a drainage head, a water outlet is provided on the drainage head, and the other end of the drainage tube is fixedly connected to an operating handle; A drainage component, which is used to assist the user in cleaning the necrotic tissue in the necrotic focus, and the drainage component is respectively connected to the drainage tube, the drainage head and the operating handle; The drainage assembly includes an inner septum fixedly connected to the drainage head, a support frame fixedly connected to the inner wall of the inner septum, a rotating rod rotatably connected to the support frame, one end of the rotating rod is rotatably connected to the mounting frame, a cutting knife is clamped at the bottom of the mounting frame, a pulling wire is installed at the other end of the rotating rod, one end of the pulling wire is fixedly connected to the second spring sheet, and the operating handle is fixedly connected to the first spring sheet; A reset sheet is clamped at one end of the mounting frame, a bent portion is fixedly connected to the middle position of the reset sheet, the bent portion is a curved elastic structure, a fixed portion is fixedly connected to one end of the reset sheet, and the other end of the reset sheet is fixed to the inner wall of the inner spacer; One end of the first spring piece is fixedly connected to a chuck, one end of the second spring piece is fixedly connected to a pull sleeve, and the second spring piece and the pulling wire are fixedly connected via the pull sleeve.

2. The device for debridement and drainage of necrotic lesions in acute severe pancreatitis according to claim 1, characterized in that: A water flow cavity is provided between the inner septum and the drainage head, the water outlet is located at the bottom of the water flow cavity, and one end of the drainage tube close to the operating handle is fixedly connected with a water inlet branch pipe, and the water inlet branch pipe is used to inject warm water into the drainage tube.

3. The device for debridement and drainage of necrotic lesions in acute severe pancreatitis according to claim 1, characterized in that: The support frame is fixedly connected with a support rod, the overall structure of the support frame is a circular frame body, the support frame is fixedly connected with a rotating part, and both ends of the rotating part are fixedly connected with positioning blocks.

4. The device for debridement and drainage of necrotic lesions in acute severe pancreatitis according to claim 1, characterized in that: A clamping part is fixedly connected to the middle position of the rotating rod. The clamping part is a C-shaped elastic structure and a lightweight groove is provided on the clamping part.

5. The device for debridement and drainage of necrotic lesions of acute severe pancreatitis according to claim 1, characterized in that: One end of the mounting frame is two L-shaped sleeve structures, and the rotating rod and the mounting frame are connected and fixed by means of the L-shaped sleeve structure, and the L-shaped sleeve structure is an elastic structure.

6. The device for debridement and drainage of necrotic lesions in acute severe pancreatitis according to claim 1, characterized in that: The bottom of the mounting frame is fixedly connected with a mounting block, the top of the mounting block is fixedly connected with a first limiting block, the middle position of the mounting block is fixedly connected with a second limiting block, and the cutting knife is provided with a limiting groove that matches the contour of the second limiting block.

7. The device for debridement and drainage of necrotic lesions in acute severe pancreatitis according to claim 1, characterized in that: The first spring sheet and the second spring sheet are integrally manufactured structures, and both the first spring sheet and the second spring sheet are elastic structures.

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