High-frequency incision device with injection pressure adjusting function

Abstract

The invention discloses a high-frequency incision device with an injection pressure adjusting function, and relates to the technical field of high-frequency incision devices.The high-frequency incision device comprises a core rod, a sliding assembly, a liquid conveying assembly, a liquid guiding assembly and a cutting assembly, the core rod and the sliding assembly are in sliding connection, the core rod and the liquid conveying assembly are in fastening connection, and the liquid guiding assembly and the liquid conveying assembly are in fastening connection; the liquid guide assembly is in fastening connection with the sliding assembly, and the liquid guide assembly is in fastening connection with the cutting assembly. According to the high-frequency incision device, liquid can be injected into the submucous membrane, the mucous membrane is raised, the injection pressure of the high-frequency incision device is adjusted by controlling the instantaneous flow of injection flowing into the pressure tube, the injection efficiency is improved, mucous membrane tissue can be subjected to electrocoagulation marking, the mucous membrane tissue can be cut off, and wounds and bleeding of the upper mucous membrane can be flushed; during flushing, the pressure of bubbles in the flushing liquid is larger than the external atmospheric pressure, so that the bubbles are broken, the flushed flushing liquid is diffused, the flushing range is enlarged, and the flushing efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-frequency incision devices, and specifically relates to a high-frequency incision device with injection pressure adjustment function. BACKGROUND

[0002] The high-frequency incision knife is used to cut and coagulate tissues by using the heat effect generated by high-frequency and high-voltage alternating current when passing through the tissues.

[0003] The conventional multifunctional high-frequency incision knife on the market has the following shortcomings: when the amount of bleeding at the affected area is large during the operation, the endoscope is affected by the blood, which limits the field of view, so that the high-frequency incision knife has to be terminated, the high-frequency incision knife is taken out of the endoscope, and a spraying tube is replaced to treat the bleeding area, which increases the operation time and also increases the discomfort of the patient. When performing endoscopic mucosal resection, a syringe needle is first used to inject the mucosa under the resection area, and then a high-frequency incision knife is replaced to cut, which requires the intervention of two medical instruments, increases the operation time, and also increases the discomfort of the patient. Moreover, when the flushing and injection functions of the high-frequency incision knife are used, different infusion interfaces need to be connected, and a large number of supporting instruments need to be used, which is complicated to operate during the operation. SUMMARY

[0004] The present application aims to provide a high-frequency incision device with injection pressure adjustment function to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: A high-frequency incision device with injection pressure adjustment function, the high-frequency incision device comprising a core rod, a sliding assembly, a liquid infusion assembly, a liquid guide assembly and a cutting assembly, the core rod and the sliding assembly being in sliding connection, the core rod and the liquid infusion assembly being in fastening connection, the liquid guide assembly and the liquid infusion assembly being in fastening connection, the liquid guide assembly and the sliding assembly being in fastening connection, and the liquid guide assembly and the cutting assembly being in fastening connection.

[0006] Through the fixation of the sliding assembly and the liquid guide assembly, the sliding assembly can drive the movement of the liquid guide assembly when sliding on the core rod. Through the fixation of the liquid guide assembly and the cutting assembly, the cutting assembly can stretch and contract with the movement of the liquid guide assembly. Through the fixation of the core rod and the liquid infusion assembly and the fixation of the liquid guide assembly and the liquid infusion assembly, the injection liquid and the flushing liquid can enter the liquid guide assembly through the liquid infusion assembly and finally be sprayed from the cutting assembly. The injection liquid and the flushing liquid can be injected and flushed at different time periods through the same inlet on the liquid infusion assembly.

[0007] Further, the core rod is internally provided with a first cavity, the first cavity is provided with notches on both sides, the sliding assembly and the notches are in sliding connection, and the liquid guide assembly passes through the first cavity.

[0008] The liquid guide assembly passes through the inside of the first cavity and is connected with the sliding assembly. When the sliding assembly slides on the core rod, the liquid guide assembly in the first cavity is driven to move in the same direction.

[0009] Further, the sliding assembly comprises a sliding ring, a protective sleeve, a lateral plug and a plug seat. The sliding ring is sleeved outside the core rod and is in sliding connection with the core rod. The sliding ring and the protective sleeve are in fastening connection. The protective sleeve is internally provided with the plug seat. The plug seat passes through the slot on the core rod. The plug seat is internally provided with a first threaded groove. The lateral plug is externally provided with a first external thread. The plug seat and the lateral plug are in threaded connection. The lateral plug and the liquid guide assembly are in fastening connection.

[0010] The sliding ring is sleeved outside the core rod. When the sliding ring slides, the protective sleeve, the lateral plug and the plug seat are driven to move in the same direction. The protective sleeve is used for protecting the lateral plug and the plug seat. The lateral plug and the plug seat pass through the protective sleeve and the slot. One end of the lateral plug inside the slot is fixed with the liquid guide assembly. When the sliding ring slides, the liquid guide assembly is also driven to move in the same direction.

[0011] Further, the infusion assembly comprises a shell, a protective tube, a screw sleeve and a protection guide tube. The shell is in fastening connection with the core rod. The shell is internally provided with a liquid guide hole, a second cavity and a third cavity. The axis of the liquid guide hole is perpendicular to the axis of the third cavity. The axis of the second cavity coincides with the axis of the third cavity. The diameter of the second cavity is larger than that of the third cavity. The liquid guide hole is externally provided with a second external thread. The second cavity is internally provided with the screw sleeve. The screw sleeve is internally provided with a second threaded groove near one end of the sliding ring. The other end of the screw sleeve is provided with two groups of first pressing rings. The protective tube is externally provided with a third external thread. The screw sleeve and the protective tube are in threaded connection. The liquid guide assembly passes through the protective tube and the inner ring of the third cavity in sequence. The liquid guide assembly and the inner ring of the first pressing ring are in abutment. The side of the shell near the cutting assembly is provided with the protection guide tube. One end of the protection guide tube is sleeved outside the shaft end of the shell. The other end of the protection guide tube is sleeved outside the liquid guide assembly.

[0012] The shell has three direction openings, which are the liquid guide hole, the second cavity and the third cavity. The axis of the second cavity coincides with the axis of the third cavity and they are in communication. Therefore, the liquid guide assembly passes through the second cavity and the third cavity in sequence. The liquid guide hole is externally provided with a second external thread for introducing injection liquid and flushing liquid. The injection liquid and the flushing liquid enter the inside of the high-frequency cutting device through the liquid guide hole. The liquid then passes through the liquid guide assembly to reach the cutting assembly and is finally injected into the tissue or sprayed to the operation site. The protective tube is arranged in the second cavity for protecting the liquid guide assembly in this section of the second cavity. The liquid guide assembly and the inner ring of the first pressing ring are in abutment. When the liquid guide assembly slides, the first pressing ring guides the sliding of the liquid guide assembly. The protection guide tube is arranged on one side of the third cavity for protecting the liquid guide assembly on one side of the third cavity.

[0013] Further, the liquid guide assembly comprises a pressing tube, a closing tube, a connecting piece, a sealing plug, an outer tube and an inflation tube, the pressing tube is internally provided with the sealing plug, the pressing tube is provided with a liquid inlet hole, the sealing plug, the liquid inlet hole and the closing tube are sequentially arranged along the liquid flow direction, and the liquid inlet hole is opened towards the liquid guide hole; When the pressure is increased: the outer ring of the closing tube and the second pressure ring abut, and the overlapping area of the liquid guide hole and the liquid inlet hole increases.

[0014] The injection liquid enters the pressing tube through the liquid inlet hole on the pressing tube, the sealing plug is arranged on one side of the liquid inlet hole to block the flow of the injection liquid to the lateral plug, when the injection liquid is injected into the liquid guide hole, the sliding ring is moved so that the outer ring of the closing tube and the second pressure ring abut, the cross section of the liquid guide hole and the liquid inlet hole overlaps, the injection liquid enters the pressing tube through the liquid guide hole and the liquid inlet hole in sequence, the overlapping area of the liquid guide hole and the liquid inlet hole is adjusted by sliding the sliding ring to control the instantaneous flow of the injection liquid when it flows into the pressing tube, thereby adjusting the injection pressure of the high-frequency cutting device, for example, when the injection pressure needs to be increased, the sliding ring is slid, first, the outer ring of the closing tube and the second pressure ring abut to block the injection liquid from entering the outer tube, then the liquid guide hole and the liquid inlet hole begin to have an overlapping area and gradually increase, so the injection liquid will enter the pressing tube through the liquid inlet hole, the larger the overlapping area, the more injection liquid flows in, and the injection pressure also increases, on the contrary, the smaller the overlapping area, the smaller the injection pressure.

[0015] Further, the pressing tube sequentially passes through the protection tube, the third cavity, the connecting piece and the guide protection tube, the pressing tube and the inner ring of the first pressure ring abut, the pressing tube is provided with an outer tube, the outer tube is arranged on the side close to the guide protection tube, the connecting piece is arranged inside the outer shell shaft end, the connecting piece and the outer shell shaft end are tightly connected, the connecting piece is internally provided with the second pressure ring, one end of the connecting piece and the outer tube are tightly connected, the closing tube is sleeved on the pressing tube, the closing tube and the pressing tube are tightly connected, the closing tube and the inner ring of the second pressure ring abut, the other end of the outer tube and the cutting assembly are tightly connected, and the inflation tube is arranged in the outer tube.

[0016] The pressing tube and the inner ring of the first pressure ring abut, the first pressure ring guides the pressing tube when the pressing tube slides, the outer tube is sleeved on the outer ring of the pressing tube, the pressing tube is used for the flow of the injection liquid, the injection liquid flows to the cutting assembly through the fixation of the pressing tube and the cutting assembly, the outer tube is used for the flow of the flushing liquid, the flushing liquid flows to the cutting assembly through the fixation of the outer tube and the cutting assembly, the connecting piece is used for connecting the outer tube and the outer shell, the sliding ring injects the injection liquid into the liquid guide hole when the closing tube and the inner ring of the second pressure ring abut, the closing tube blocks the communication between the third cavity and the outer tube, so the injection liquid enters the pressing tube through the liquid inlet hole and flows into the cutting assembly, the sliding ring injects the flushing liquid into the liquid guide hole when the closing tube does not abut with the inner ring of the second pressure ring, the third cavity and the outer tube are communicated, and the liquid inlet hole moves to the first pressure ring and is not communicated with the liquid guide hole, so the flushing liquid flows between the outer tube and the pressing tube and flows into the cutting assembly, and the inflation tube in the outer tube is used for inflating the flushing liquid in the tube.

[0017] Further, the inflation pipe is internally provided with a contraction section, a throat section and a diffusion section in sequence, the radius of the contraction section is gradually reduced to the same size as the throat section, the radius of the diffusion section is gradually increased from the size of the throat section, the throat section is provided with an inclined long pipe, one end of the inclined long pipe is connected with the throat section, and the other end of the inclined long pipe penetrates the outer pipe.

[0018] The inflation pipe is arranged in the outer pipe, so the inflation pipe is internally passed through the flushing liquid, when the flushing liquid flows, it firstly passes through the contraction section to the throat section, because the radius of the throat section is smaller than that of the outer pipe, the speed of the flushing liquid is increased, the internal pressure of the throat section is reduced, the inclined long pipe absorbs air to enter the throat section, and the air bubbles are formed in the flushing liquid, the air bubbles flow together with the flushing liquid, when the flushing liquid reaches the outlet of the cutting assembly, the internal pressure of the air bubbles is greater than the atmospheric pressure, so the air bubbles are broken, the flushing liquid is diffused, the flushing area of the flushing liquid is increased, and the flushing efficiency is improved.

[0019] Further, the cutting assembly comprises a cutter head adapter, a D-shaped cutting knife and a tip cover, the cutter head adapter is tightly connected with the pressure pipe, the cutter head adapter is internally provided with a first through hole, the pressure pipe is in pipeline communication with the first through hole, the tip cover is arranged in the outer pipe, the tip cover is tightly connected with the outer pipe, the D-shaped cutting knife is tightly connected with the cutter head adapter, the D-shaped cutting knife penetrates the tip cover, the D-shaped cutting knife is internally provided with a second through hole, and the cutter head adapter is in pipeline communication with the second through hole.

[0020] Through the pipeline communication between the pressure pipe and the first through hole, the injection liquid flows from the pressure pipe into the cutter head adapter, through the pipeline communication between the cutter head adapter and the second through hole, the injection liquid flows from the cutter head adapter into the D-shaped cutting knife, and then is injected into the submucosa from the outlet, and the flushing liquid flows into the space between the tip cover and the D-shaped cutting knife through the outer pipe, and is sprayed to the cleaning position from the opening.

[0021] Further, the tip cover is provided with a placing groove, and the placing groove is arranged on the side close to the D-shaped cutting knife.

[0022] Before the high-frequency cutting device works, the D-shaped cutting knife is arranged in the placing groove, the placing groove protects the D-shaped cutting knife, when the high-frequency cutting device works, the sliding ring is pushed to move the D-shaped cutting knife outward to work, after the work is completed, the sliding ring is pushed back to move the D-shaped cutting knife into the placing groove.

[0023] Compared with the prior art, the high-frequency cutting device has the advantages that during the use of the high-frequency cutting device, the injection liquid can be injected into the submucosa to make the mucosa swell, the mucosa tissue can be electrically coagulated and marked and cut, and the wound and bleeding on the mucosa can be flushed, the flushing liquid flows through the outer pipe, the injection liquid flows through the pressure pipe, the diameter of the outer pipe is greater than that of the D-shaped cutting knife, and the diameter of the D-shaped cutting knife is greater than that of the pressure pipe, so the high-frequency cutting device can ensure the injection pressure during injection and the diffusion area during flushing.

[0024] When injecting, the overlapping area of the liquid guide hole and the liquid inlet hole is adjusted by sliding the sliding ring to control the instantaneous flow when the injection liquid flows into the pressure tube, thereby adjusting the injection pressure of the high-frequency cutting device and improving the injection efficiency.

[0025] When flushing, the sliding ring is moved to make the flushing liquid flow between the outer tube and the pressure tube, and the flushing liquid is sprayed from the placement groove to the wound for cleaning. During the flow of the flushing liquid, air is sucked into the flushing liquid through the inflation tube to form bubbles. When the flushing liquid reaches the outlet, the bubbles burst because the pressure inside the bubbles is greater than the atmospheric pressure, thereby causing the flushing liquid to diffuse and expanding the flushing range, thereby increasing the flushing efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of the present application; Figure 2 is Figure 1 a sectional view of the view; Figure 3 is Figure 2 an enlarged view of view A; Figure 4 is Figure 2 an enlarged view of view B; Figure 5 is Figure 2 an enlarged view of view C; Figure 6 is Figure 2 an enlarged view of view D; Figure 7 is a sectional view of the cutting assembly of the present application.

[0027] In the figure: 1, core rod; 11, first cavity; 12, notch; 2, sliding assembly; 21, sliding ring; 22, protective sleeve; 23, lateral plug; 231, first external thread; 24, plug seat; 241, first thread groove; 3, infusion assembly; 31, outer shell; 311, liquid guide hole; 312, second cavity; 313, third cavity; 32, protective tube; 33, screw sleeve; 331, first pressure ring; 34, guide tube; 4, liquid guide assembly; 41, pressure tube; 411, liquid inlet hole; 42, closed tube; 43, connecting piece; 431, second pressure ring; 44, sealing plug; 45, outer tube; 46, inflation tube; 461, contraction section; 462, throat; 463, diffusion section; 464, inclined long tube; 5, cutting assembly; 51, butt joint; 52, D-shaped cutting knife; 53, tip cover; 531, placement groove. DETAILED DESCRIPTION

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example: Figures 1-7 As shown, the present invention provides a high-frequency cutting device with injection pressure adjustment function.

[0030] like Figure 1 As shown, a high-frequency cutting device with injection pressure adjustment function is disclosed. The high-frequency cutting device includes a core rod 1, a sliding component 2, an infusion component 3, a fluid guiding component 4, and a cutting component 5. The core rod 1 and the sliding component 2 are slidably connected, the core rod 1 and the infusion component 3 are fastened together, the fluid guiding component 4 and the infusion component 3 are fastened together, the fluid guiding component 4 and the sliding component 2 are fastened together, and the fluid guiding component 4 and the cutting component 5 are fastened together.

[0031] With the sliding component 2 and the fluid guiding component 4 fixed, the sliding component 2 can drive the fluid guiding component 4 to move when it slides on the core rod 1. With the fluid guiding component 4 and the cutting component 5 fixed, the cutting component 5 will extend and retract with the movement of the fluid guiding component 4. With the core rod 1 and the infusion component 3 fixed, as well as the fluid guiding component 4 and the infusion component 3 fixed, the injection solution and the flushing solution can enter the fluid guiding component 4 through the infusion component 3 and finally be sprayed out from the cutting component 5. The injection solution and the flushing solution can be injected and flushed at different time periods through the same inlet on the infusion component 3.

[0032] like Figure 2 As shown, the core rod 1 has a first cavity 11 inside, and slots 12 are provided on both sides of the first cavity 11. The sliding component 2 is slidably connected to the slots 12, and the liquid guiding component 4 passes through the first cavity 11.

[0033] The liquid guiding component 4 passes through the inside of the first cavity 11 and is connected to the sliding component 2. When the sliding component 2 slides on the core rod 1, it drives the liquid guiding component 4 in the first cavity 11 to move in the same direction.

[0034] like Figures 1-3 As shown, the sliding assembly 2 includes a slip ring 21, a protective sleeve 22, a side plug 23, and a plug seat 24. The slip ring 21 is sleeved on the outside of the core rod 1, and the slip ring 21 and the core rod 1 are slidably connected. The slip ring 21 and the protective sleeve 22 are fastened together. The protective sleeve 22 has a plug seat 24 inside, which passes through the slot 12 on the core rod 1. The plug seat 24 has a first threaded groove 241 inside, and the side plug 23 has a first external thread 231 outside. The plug seat 24 and the side plug 23 are threadedly connected, and the side plug 23 is fastened together with the liquid guiding assembly 4.

[0035] The sliding ring 21 is sleeved on the outer ring of the core rod 1. When the sliding ring 21 slides, the sliding ring 21 drives the protective sleeve 22, the lateral plug 23 and the plug seat 24 to move in the same direction. The protective sleeve 22 is used for protecting the lateral plug 23 and the plug seat 24. The lateral plug 23 and the plug seat 24 pass through the protective sleeve 22 and the slot 12. One end of the lateral plug 23 arranged in the slot 12 is fixed with the liquid guide assembly 4. When the sliding ring 21 slides, the sliding ring 21 also drives the liquid guide assembly 4 to move in the same direction.

[0036] As shown in Figures 2-4 The infusion assembly 3 comprises a shell 31, a protective tube 32, a screw sleeve 33 and a guide protection tube 34. The shell 31 is fixedly connected with the core rod 1. The shell 31 is internally provided with a liquid guide hole 311, a second cavity 312 and a third cavity 313. The axis of the liquid guide hole 311 is perpendicular to the axis of the third cavity 313. The axis of the second cavity 312 coincides with the axis of the third cavity 313. The diameter of the second cavity 312 is larger than the diameter of the third cavity 313. The liquid guide hole 311 is externally provided with a second external thread. The screw sleeve 33 is internally provided with a second thread groove near one end of the sliding ring 21. The screw sleeve 33 is internally provided with two groups of first pressing rings 331 at the other end. The protective tube 32 is externally provided with a third external thread. The screw sleeve 33 and the protective tube 32 are threadedly connected. The liquid guide assembly 4 passes through the protective tube 32 and the inner ring of the third cavity 313 in sequence. The liquid guide assembly 4 and the inner ring of the first pressing ring 331 abut. The shell 31 is provided with the guide protection tube 34 on the side close to the cutting assembly 5. One end of the guide protection tube 34 is sleeved on the outer end of the shell 31. The other end of the guide protection tube 34 is sleeved on the outside of the liquid guide assembly 4.

[0037] The shell 31 has three openings in different directions, namely the liquid guide hole 311, the second cavity 312 and the third cavity 313. The axis of the second cavity 312 coincides with the axis of the third cavity 313, and the two are connected in communication. Therefore, the liquid guide assembly 4 passes through the second cavity 312 and the third cavity 313 in sequence. The liquid guide hole 311 is externally provided with a second external thread for introducing injection liquid and flushing liquid. The injection liquid and the flushing liquid enter the inside of the high-frequency incision device through the liquid guide hole 311. The liquid then passes through the liquid guide assembly 4 to reach the cutting assembly 5, and finally is injected into the tissue or sprayed to the operation site. The protective tube 32 is arranged in the second cavity 312 for protecting the liquid guide assembly 4 in this section of the second cavity 312. The liquid guide assembly 4 and the inner ring of the first pressing ring 331 abut. When the liquid guide assembly 4 slides, the first pressing ring 331 guides the sliding of the liquid guide assembly 4. The guide protection tube 34 is arranged on one side of the third cavity 313 for protecting the liquid guide assembly 4 on one side of the third cavity 313.

[0038] As shown in Figures 4-5As shown, the liquid guiding assembly 4 includes a pressure tube 41, a sealing tube 42, a connector 43, a sealing plug 44, an outer tube 45, and an inflation tube 46. The pressure tube 41 is provided with a sealing plug 44 inside, and a liquid inlet hole 411 is provided on the pressure tube 41. The sealing plug 44, the liquid inlet hole 411, and the sealing tube 42 are placed in sequence along the liquid flow direction, and the opening of the liquid inlet hole 411 faces the liquid guiding hole 311. During pressurization: the outer ring of the closed tube 42 and the second pressure ring 431 abut together, and the overlapping area of ​​the liquid guide hole 311 and the liquid inlet hole 411 increases.

[0039] The injection solution enters the pressure tube 41 through the inlet hole 411. A sealing plug 44 is placed on one side of the inlet hole 411 to block the injection solution from flowing to the side plug 23. When the injection solution is injected through the guide hole 311, the slip ring 21 is moved so that the outer ring of the sealing tube 42 and the second pressure ring 431 abut against each other. The cross-sections of the guide hole 311 and the inlet hole 411 overlap, and the injection solution enters the pressure tube 41 sequentially through the guide hole 311 and the inlet hole 411. The overlapping area of ​​the guide hole 311 and the inlet hole 411 is adjusted by sliding the slip ring 21 to control the flow of the injection solution. The instantaneous flow rate inside the pressure tube 41 is used to adjust the injection pressure of the high-frequency cutting device. For example, when it is necessary to increase the injection pressure, the sliding ring 21 first closes the outer ring of the tube 42 and the second pressure ring 431, blocking the injection fluid from entering the outer tube 45. Then, the liquid guide hole 311 and the liquid inlet hole 411 begin to overlap and gradually increase in area. Therefore, the injection fluid will enter the pressure tube 41 through the liquid inlet hole 411. The larger the overlap area, the more injection fluid flows in, and the injection pressure increases accordingly. Conversely, the smaller the overlap area, the lower the injection pressure.

[0040] like Figures 5-7 As shown, the pressure tube 41 passes through the protective tube 32, the third cavity 313, the connector 43, and the protective tube 34 in sequence. The pressure tube 41 abuts against the inner ring of the first pressure ring 331. An outer tube 45 is provided outside the pressure tube 41. The outer tube 45 is placed on the side close to the protective tube 34. The connector 43 is placed inside the shaft end of the outer shell 31. The connector 43 is fastened to the shaft end of the outer shell 31. A second pressure ring 431 is provided inside the connector 43. One end of the connector 43 is fastened to the outer tube 45. A sealing tube 42 is sleeved outside the pressure tube 41. The sealing tube 42 is fastened to the pressure tube 41. The sealing tube 42 abuts against the inner ring of the second pressure ring 431. The other end of the outer tube 45 is fastened to the cutting component 5. An inflation tube 46 is provided inside the outer tube 45.

[0041] The inner circle of the pressing pipe 41 and the first pressing ring 331 abut, the first pressing ring 331 guides the sliding of the pressing pipe 41, the outer pipe 45 is sleeved on the outer circle of the pressing pipe 41, the pressing pipe 41 is used for the flow of injection liquid, the injection liquid flows to the cutting assembly 5 through the fixing of the pressing pipe 41 and the cutting assembly 5, the outer pipe 45 is used for the flow of flushing liquid, the flushing liquid flows to the cutting assembly 5 through the fixing of the outer pipe 45 and the cutting assembly 5, the connecting piece 43 is used for connecting the outer pipe 45 and the shell 31, when the sliding sliding ring 21 makes the inner circle of the sealing pipe 42 and the second pressing ring 431 abut, the injection liquid is injected into the liquid guide hole 311, the sealing pipe 42 blocks the communication between the third cavity 313 and the outer pipe 45, so that the injection liquid enters the pressing pipe 41 through the liquid inlet hole 411 and flows into the cutting assembly 5, when the sliding sliding ring 21 makes the inner circle of the sealing pipe 42 not abut with the second pressing ring 431, the flushing liquid is injected into the liquid guide hole 311, the third cavity 313 communicates with the outer pipe 45, and the liquid inlet hole 411 moves to the first pressing ring 331, and does not communicate with the liquid guide hole 311, so that the flushing liquid flows between the outer pipe 45 and the pressing pipe 41 and flows into the cutting assembly 5, the inflation pipe 46 inside the outer pipe 45 is used for inflating the flushing liquid in the pipe.

[0042] As shown in Figure 6 The inflation pipe 46 inside is sequentially provided with a contraction section 461, a throat 462 and a diffusion section 463, the radius of the contraction section 461 gradually decreases to the same size as the radius of the throat 462, the radius of the diffusion section 463 gradually increases from the radius of the throat 462, one side of the throat 462 is provided with an inclined long pipe 464, one end of the inclined long pipe 464 is connected with the pipeline of the throat 462, and the other end of the inclined long pipe 464 penetrates through the outer pipe 45.

[0043] The inflation pipe 46 is arranged inside the outer pipe 45, so the inflation pipe 46 is passed through the flushing liquid, when the flushing liquid flows, it first reaches the throat 462 through the contraction section 461, because the radius of the throat 462 is smaller than that of the outer pipe 45, so the speed of the flushing liquid increases, which causes the pressure inside the throat 462 to decrease, the inclined long pipe 464 absorbs air into the throat 462, and forms bubbles in the flushing liquid, these bubbles flow with the flushing liquid, when reaching the outlet of the cutting assembly 5, the pressure in the bubbles is greater than the atmospheric pressure, so the bubbles burst, thereby diffusing the flushing liquid out, increasing the flushing area of the flushing liquid, and increasing the flushing efficiency.

[0044] As shown in Figure 7As shown, the cutting assembly 5 includes a blade head connector 51, a D-shaped cutting blade 52, and a tip cover 53. The blade head connector 51 is fastened to the pressure tube 41. The blade head connector 51 has a first through hole, and the pressure tube 41 is connected to the first through hole. The tip cover 53 is placed inside the outer tube 45 and is fastened to the outer tube 45. The D-shaped cutting blade 52 is fastened to the blade head connector 51 and passes through the interior of the tip cover 53. The D-shaped cutting blade 52 has a second through hole, and the blade head connector 51 and the second through hole are connected.

[0045] The injection fluid flows from the pressure tube 41 into the cutter head connector 51 through the pipe connecting the pressure tube 41 and the first through hole. The injection fluid flows from the cutter head connector 51 into the D-type cutting blade 52 through the pipe connecting the cutter head connector 51 and the second through hole, and is then injected into the area below the mucosa from the outlet. The rinsing fluid flows from the outer tube 45 into the area between the tip cover 53 and the D-type cutting blade 52, and is then sprayed from the opening to the area to be cleaned.

[0046] like Figure 7 As shown, the tip cover 53 is provided with a placement groove 531, which is located on the side close to the D-shaped cutting blade 52.

[0047] Before the high-frequency cutting device is in operation, the D-type cutting blade 52 is placed inside the placement groove 531. The placement groove 531 protects the D-type cutting blade 52. When the high-frequency cutting device is in operation, the slip ring 21 is pushed to move the D-type cutting blade 52 outward for operation. After the operation is completed, the slip ring 21 is pushed back to move the D-type cutting blade 52 back into the placement groove 531.

[0048] Working principle of the invention: During the use of the high-frequency cutting device, it can inject liquid into the submucosa to make the mucosa bulge, electrocoagulate and mark the mucosal tissue and remove the mucosal tissue, and also has the function of rinsing the upper mucosal wound and bleeding. The rinsing fluid flows through the outer tube 45 and the injection fluid flows through the pressure tube 41. The diameter of the outer tube 45 is larger than the diameter of the D-type cutting blade 52, and the diameter of the D-type cutting blade 52 is larger than the diameter of the pressure tube 41. Therefore, the high-frequency cutting device ensures both the injection pressure during injection and the diffusion area during rinsing.

[0049] When injecting, the D-shaped incision cutter 52 is moved outwards by pushing the sliding ring 21, which drives the compression tube 41 and the cutter head abutting piece 51 to move. Before the D-shaped incision cutter 52 works, the injection liquid is first injected into the liquid guide hole 311, the outer ring of the compression tube 42 and the second compression ring 431 abut, and the liquid guide hole 311 and the liquid inlet hole 411 overlap in cross section, so that the injection liquid enters the inside of the compression tube 41 through the liquid inlet hole 411, flows through the pipeline, and finally flows out from the opening of the D-shaped incision cutter 52, achieving the purpose of discharging the air in the tube. Then the D-shaped incision cutter 52 contacts the mucosa to work, and the injection liquid is injected under the mucosa to make the mucosa protrude, and then the D-shaped incision cutter 52 cuts the protruding part. During the injection of the injection liquid, the overlapping area of the liquid guide hole 311 and the liquid inlet hole 411 is adjusted by sliding the sliding ring 21 to control the instantaneous flow rate of the injection liquid flowing into the inside of the compression tube 41, thereby adjusting the injection pressure of the high-frequency incision device and improving the injection efficiency.

[0050] When flushing, if the amount of bleeding at the wound of the patient is large during the working process of the D-shaped incision cutter 52, it needs to be flushed. The flushing liquid is injected into the liquid guide hole 311, and at this time the sliding ring 21 is moved to make the flushing liquid flow to the outside tube 45 and the compression tube 41, and finally sprayed to the wound from the placement groove 531 for cleaning. During the flow of the flushing liquid, air is sucked into the flushing liquid through the inflation tube 46 to form bubbles. When the flushing liquid reaches the outlet, the pressure in the bubbles is greater than the atmospheric pressure, so the bubbles burst, thereby making the flushed flushing liquid spread out, expanding the flushing range of the flushing liquid and increasing the flushing efficiency.

[0051] It is apparent for those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and range of equivalents of the claims are intended to be embraced by the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

Claims

1. A high frequency incision apparatus having an injection pressure adjusting function, characterized by: The high-frequency incision device comprises a core rod (1), a sliding assembly (2), an infusion assembly (3), a liquid guide assembly (4) and a cutting assembly (5), the core rod (1) and the sliding assembly (2) are in sliding connection, the core rod (1) and the infusion assembly (3) are in fastening connection, the liquid guide assembly (4) and the infusion assembly (3) are in fastening connection, the liquid guide assembly (4) and the sliding assembly (2) are in fastening connection, and the liquid guide assembly (4) and the cutting assembly (5) are in fastening connection.

2. The high-frequency incision apparatus having an injection pressure adjusting function according to claim 1, characterized by: The core rod (1) is internally provided with a first cavity (11), both sides of the first cavity (11) are provided with notches (12), the sliding assembly (2) and the notches (12) are in sliding connection, and the liquid guide assembly (4) passes through the first cavity (11).

3. The high frequency incision apparatus having an injection pressure adjusting function according to claim 2, characterized in that: The sliding assembly (2) comprises a sliding ring (21), a protective sleeve (22), a lateral plug (23) and a plug seat (24), the sliding ring (21) is sleeved outside the core rod (1), the sliding ring (21) and the core rod (1) are in sliding connection, the sliding ring (21) and the protective sleeve (22) are in fastening connection, the protective sleeve (22) is internally provided with the plug seat (24), the plug seat (24) passes through the notches (12) on the core rod (1), the plug seat (24) is internally provided with a first threaded groove (241), the lateral plug (23) is externally provided with a first external thread (231), the plug seat (24) and the lateral plug (23) are in threaded connection, and the lateral plug (23) and the liquid guide assembly (4) are in fastening connection.

4. The high frequency incision apparatus having a function of adjusting an injection pressure according to claim 3, characterized in that: The infusion assembly (3) comprises an outer shell (31), a protective tube (32), a screw sleeve (33) and a protective guide tube (34), the outer shell (31) and the core rod (1) are in fastening connection, the outer shell (31) is internally provided with a liquid guide hole (311), a second cavity (312) and a third cavity (313), the axis of the liquid guide hole (311) is perpendicular to the axis of the third cavity (313), the axis of the second cavity (312) coincides with the axis of the third cavity (313), the diameter of the second cavity (312) is larger than the diameter of the third cavity (313), the liquid guide hole (311) is externally provided with a second external thread, the second cavity (312) is internally provided with the screw sleeve (33), the screw sleeve (33) is internally provided with a second threaded groove near one end of the sliding ring (21), the other end of the screw sleeve (33) is provided with two groups of first pressing rings (331), the protective tube (32) is externally provided with a third external thread, the screw sleeve (33) and the protective tube (32) are in threaded connection, the liquid guide assembly (4) passes through the protective tube (32) and the inner ring of the third cavity (313) in sequence, the liquid guide assembly (4) and the inner ring of the first pressing ring (331) are in abutment, one side of the outer shell (31) near the cutting assembly (5) is provided with the protective guide tube (34), one end of the protective guide tube (34) is sleeved outside the shaft end of the outer shell (31), and the other end of the protective guide tube (34) is sleeved outside the liquid guide assembly (4).

5. The high frequency incision apparatus having an injection pressure adjusting function according to claim 4, characterized in that: The liquid guide assembly (4) comprises a pressing pipe (41), a closed pipe (42), a connecting piece (43), a sealing plug (44), an outer pipe (45) and an inflation pipe (46), the inside of the pressing pipe (41) is provided with the sealing plug (44), the pressing pipe (41) is provided with a liquid inlet hole (411), the sealing plug (44), the liquid inlet hole (411) and the closed pipe (42) are sequentially arranged along the liquid flow direction, and the liquid inlet hole (411) is opened towards the liquid guide hole (311). When the pressure is increased: the outer ring of the closed pipe (42) and the second pressing ring (431) abut, and the overlapping area of the liquid guide hole (311) and the liquid inlet hole (411) increases.

6. The high frequency incision apparatus having an injection pressure adjusting function according to claim 5, characterized in that: The pressing pipe (41) sequentially passes through the protection pipe (32), the third cavity (313), the connecting piece (43) and the protection guide pipe (34), the pressing pipe (41) and the inner ring of the first pressing ring (331) abut, the pressing pipe (41) is provided with the outer pipe (45), the outer pipe (45) is arranged on the side close to the protection guide pipe (34), the connecting piece (43) is arranged in the inside of the shaft end of the shell (31), the connecting piece (43) and the shaft end of the shell (31) are tightly connected, the inside of the connecting piece (43) is provided with the second pressing ring (431), one end of the connecting piece (43) and the outer pipe (45) are tightly connected, the closed pipe (42) is sleeved on the outside of the pressing pipe (41), the closed pipe (42) and the pressing pipe (41) are tightly connected, the closed pipe (42) and the inner ring of the second pressing ring (431) abut, the other end of the outer pipe (45) and the cutting assembly (5) are tightly connected, and the inflation pipe (46) is arranged in the outer pipe (45).

7. The high frequency incision apparatus having an injection pressure adjusting function according to claim 6, characterized in that: The inside of the inflation pipe (46) is sequentially provided with a contraction section (461), a throat (462) and a diffusion section (463), the radius of the contraction section (461) gradually decreases to the same size as the radius of the throat (462), the radius of the diffusion section (463) gradually increases from the radius of the throat (462), one side of the throat (462) is provided with an inclined long pipe (464), one end of the inclined long pipe (464) is connected with the throat (462), and the other end of the inclined long pipe (464) passes through the outer pipe (45).

8. The high frequency incision apparatus having a function of adjusting an injection pressure according to claim 7, characterized in that: The cutting assembly (5) comprises a cutter head adapter (51), a D-shaped incision knife (52) and a tip cover (53), the cutter head adapter (51) and the pressing pipe (41) are tightly connected, the inside of the cutter head adapter (51) is provided with a first through hole, the pressing pipe (41) and the first through hole are connected in a pipeline mode, the tip cover (53) is arranged in the outer pipe (45), the tip cover (53) and the outer pipe (45) are tightly connected, the D-shaped incision knife (52) and the cutter head adapter (51) are tightly connected, the D-shaped incision knife (52) passes through the inside of the tip cover (53), the inside of the D-shaped incision knife (52) is provided with a second through hole, and the cutter head adapter (51) and the second through hole are connected in a pipeline mode.

9. The high frequency incision apparatus having an injection pressure adjusting function according to claim 8, characterized by: The tip cover (53) is provided with a placing groove (531), and the placing groove (531) is arranged on the side close to the D-shaped incision knife (52).

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