Removable electrocoagulation hook

Abstract

The present invention belongs to the technical field of medical devices, and relates to a detachable electrocoagulation surgical hook, comprising a head assembly, an insulating outer tube, an insulating sleeve and a handle assembly; the handle assembly comprises an inner tube of a movable mechanism, a handle, a long pull rod and an electrode connector, the electrode connector is arranged at the rear end of the handle, the electrode connector is detachably connected to the head assembly through the long pull rod and the movable mechanism, the rear end of the inner tube is connected to the handle, and the front end of the inner tube is detachably connected to the head assembly; the insulating outer tube and the insulating sleeve are sleeved on the outer periphery of the inner tube, and the insulating sleeve is detachably connected to the handle; the insulating outer tube is arranged between the insulating sleeve and the head assembly. The present invention is conducive to thorough cleaning and disinfection, avoiding cross infection, and can also replace wearing parts separately to reduce the use cost.

Description

Technical Field

[0001] The invention relates to a detachable electrocoagulation surgical hook, belonging to the technical field of medical devices. Background Art

[0002] As an essential medical device for minimally invasive laparoscopic surgery, the electrocoagulation surgical hook is widely used in various types of minimally invasive laparoscopic surgery. The working principle of the electrocoagulation surgical hook is to conduct the high-frequency current emitted by the high-frequency electric knife to the tip of the electrocoagulation hook to cut and coagulate the tissue contacted by the electrocoagulation hook tip.

[0003] Currently, most mainstream electrocoagulation surgical hooks are one-piece structures. The one-piece structure is relatively simple, but there are problems such as unclean cleaning and incomplete disinfection inside the lumen, which can lead to cross-infection. When the electrocoagulation surgical hook is working, it will generate a lot of heat energy. Therefore, the insulating material at the front end of the electrocoagulation surgical hook is mostly made of zirconium oxide with excellent heat resistance. However, zirconium oxide material is brittle and is easily damaged when it collides or falls. The rod of the electrocoagulation surgical hook is usually coated with PEEK material, which is very easy to shrink during long-term use and disinfection and sterilization. For the one-piece electrocoagulation surgical hook, when a certain component has a problem, it can only be replaced with a new product as a whole. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a detachable electrocoagulation surgical hook, which can be disassembled into multiple parts, which is conducive to thorough cleaning and disinfection to avoid cross infection, and can also replace wearing parts separately to reduce the cost of use.

[0005] The detachable electrocoagulation surgical hook described in the present invention comprises a head assembly, an insulating outer tube, an insulating sleeve and a handle assembly; the handle assembly comprises a movable mechanism, an inner tube, a handle, a long pull rod and an electrode connector, the electrode connector is arranged at the rear end of the handle, the electrode connector is detachably connected to the head assembly through the long pull rod and the movable mechanism, the rear end of the inner tube is connected to the handle, and the front end of the inner tube is detachably connected to the head assembly; the insulating outer tube and the insulating sleeve are mounted on the outer periphery of the inner tube, and the insulating sleeve is detachably connected to the handle; the insulating outer tube is arranged between the insulating sleeve and the head assembly.

[0006] The detachable electrocoagulation surgical hook can be disassembled into four parts, namely the head assembly, the insulating outer tube, the insulating sleeve and the handle assembly. On the one hand, it is conducive to thorough cleaning and disinfection to avoid cross infection, and on the other hand, each wearing part can be replaced separately to reduce the cost of use. The inner tube can be made of stainless steel; the inner part of the insulating outer tube is a hollow structure, and the material can be PEEK.

[0007] Preferably, the head assembly comprises an electric hook core, an electrode insulating head and a rotating sleeve, the front end of the electric hook core is provided with a hook, the electrode insulating head is provided with an upper electrode insulating large hole and a lower electrode insulating small hole, and the outer wall of the electrode insulating head is provided with an electrode insulating step; the rotating sleeve is provided with a hook core through hole, and the front end of the rotating sleeve is inserted into the upper electrode insulating large hole for fixing; the electric hook core passes through the lower electrode insulating small hole and the hook core through hole in sequence, and the rear end of the electric hook core is fixed with the lower electrode insulating small hole and the hook core through hole; rotating sleeve boss blocks are fixed on both sides of the outer wall of the rear end of the rotating sleeve, and the rotating sleeve boss blocks are detachably connected to the handle assembly; the front end of the insulating outer tube is sleeved on the rear end of the electrode insulating head, and the front end of the insulating outer tube matches the electrode insulating step. The electric hook core and the rotating sleeve are made of stainless steel, and the electrode insulating head is made of zirconium oxide. The diameters of the electrode insulating small hole and the hook core through hole are matched with the diameter of the electric hook core, the front end diameter of the rotating sleeve is matched with the diameter of the upper electrode insulating large hole, the electrode insulating head and the rotating sleeve can be fixed by gluing, and the rear end of the electric hook core and the rotating sleeve can be fixed by laser welding.

[0008] Preferably, the insulating sleeve is provided with a stepped hole, the large end of the stepped hole is the large hole of the insulating sleeve, located at the front end of the insulating sleeve, and the small end of the stepped hole is the small hole of the insulating sleeve, located at the rear end of the insulating sleeve; the outer wall of the rear end of the insulating sleeve is provided with a U-shaped groove, and the insulating sleeve is detachably connected to the handle assembly through the U-shaped groove; the rear end of the insulating outer tube is inserted into the large hole of the insulating sleeve. The insulating outer tube is arranged between the shoulder of the stepped hole of the insulating sleeve and the insulating step of the electrode, and the position of the insulating outer tube is fixed as the head assembly is connected to the handle assembly and the insulating sleeve is connected to the handle assembly. The insulating sleeve can be made of PPSU. One side of the U-shaped groove runs through to the top of the rear end of the insulating sleeve, and the other side of the groove is shorter, and its top is located on the outer wall of the insulating sleeve.

[0009] Preferably, the movable mechanism and the long pull rod are sleeved in the inner tube; the movable mechanism includes a front push rod, a retaining ring, a sleeve, a front tensioning spring and a rear push rod; the outer wall of the front push rod is stepped, and its large head end and small head end are respectively the large smooth rod of the push rod and the small smooth rod of the push rod; the inner hole of the sleeve is a stepped hole, and the large hole end and the small hole end of the stepped hole are respectively the large hole of the sleeve and the small hole of the sleeve, the retaining ring is arranged in the small hole of the sleeve, and the retaining ring is fixed with the small hole of the sleeve, and the inner cavity of the retaining ring The rear end of the rear push rod is provided with a pull rod hole 1, and the long pull rod is fixedly connected with the rear push rod through the pull rod hole 1; the large polished rod of the push rod is located in the front end of the large hole of the sleeve, the small polished rod of the push rod passes through the retaining ring hole, the push rod inserting rod is inserted into the large hole of the sleeve, and the two ends of the front tightening spring are respectively abutted against the large polished rod of the push rod and the push rod inserting rod; the rear push rod is connected and fixed to the sleeve. During assembly, the retaining ring is fixed to the sleeve, the small rod of the front push rod passes through the retaining ring hole, and then the front tension spring is inserted, and then the push rod plug rod of the rear push rod is inserted, so that the two ends of the front tension spring are respectively in contact with the large rod and the push rod plug rod, and the retaining ring and the sleeve, the rear push rod and the sleeve are fixed by laser welding, and the diameter of the push rod plug rod matches the diameter of the large hole of the sleeve; when installing the head assembly, the head assembly will apply thrust to the small rod end of the front push rod, and the front push rod moves backward inside the sleeve, and drives the front tension spring to compress. When the head assembly is installed in place, the thrust disappears, the front tension spring rebounds, and pushes the front push rod to move forward inside the sleeve, and the front push rod tightens the head assembly. The front push rod, retaining ring, sleeve, front tension spring and rear push rod can all be made of stainless steel.

[0010] Preferably, the inner tube is a hollow structure, and a V-shaped groove is provided on both sides of the front end thereof, and a boss groove is provided at the bottom of the V-shaped groove, and the rotating sleeve boss block is inserted from the V-shaped groove and stuck in the boss groove. (Specific operation process) During installation, the two rotating sleeve boss blocks are respectively inserted backward along the two V-shaped grooves, and after being inserted to the bottom of the V-shaped groove, the rotating sleeve is rotated at a certain angle, and the two rotating sleeve boss blocks are respectively stuck in the boss grooves. In the process of inserting the rotating sleeve boss blocks backward along the V-shaped grooves, the front tightening spring is gradually compressed. When the rotating sleeve boss blocks are stuck in the boss grooves, the thrust is withdrawn, and the front tightening spring drives the front push rod to press the rotating sleeve boss blocks in the boss grooves, and the connection between the head assembly and the handle assembly is completed; when disassembly is required, manually apply thrust to the head assembly to disengage the rotating sleeve boss block from the boss groove, and then rotate in the opposite direction to make the rotating sleeve boss block fall out along the V-shaped grooves, and the disassembly process is simple and convenient.

[0011] Preferably, the inner hole of the handle is stepped, the large end of the stepped inner hole is a large through hole of the handle, the small end of the stepped inner hole is a small threaded hole of the handle, the large threaded hole of the handle is between the small threaded hole of the handle and the large through hole of the handle, and the large through hole of the handle, the large threaded hole of the handle and the small threaded hole of the handle are arranged from front to back along the handle; a pin hole is provided at the wall of the large through hole of the handle, a pin is fixed in the pin hole, and the pin cooperates with the insulating sleeve to realize a detachable connection; the inner tube is connected to the handle through an adapter, and the long pull rod is connected to the handle through a connecting sleeve. The pin is fixed in the pin hole by means of gluing or the like; the rear end diameter of the insulating sleeve matches the diameter of the large through hole of the handle, and when the insulating sleeve is installed with the handle, the insulating sleeve is inserted backward along the large through hole of the handle, and when the U-shaped groove of the insulating sleeve moves to the pin, the pin enters the bottom end of the U-shaped groove along the long groove on one side of the U-shaped groove, and then the insulating sleeve is rotated by a certain angle, and the pin enters the short side of the U-shaped groove. The diameter of the large threaded hole of the handle is slightly smaller than the diameter of the large through hole of the handle.

[0012] Preferably, the adapter is provided with a joint through hole inside, the inner tube is inserted into the joint through hole, and the inner tube is fixedly connected to the adapter, the outer wall of the adapter is provided with a joint external thread, the joint external thread is threadedly connected and fixed with the large threaded hole of the handle; and a rear tightening spring is sleeved on the outer periphery of the inner tube, the rear end of the rear tightening spring is fixedly connected with the adapter, and the front end of the rear tightening spring is abutted with the insulating sleeve. The inner tube and the adapter are fixed by laser welding, the joint external thread is threadedly connected with the large threaded hole of the handle and fixed by glue coating, and the rear end of the rear tightening spring is fixed with the adapter by laser welding. When installing the insulating sleeve, the pin gradually compresses the rear tightening spring in the process of entering the bottom end of the U-shaped groove along the long groove on one side of the U-shaped groove. When the pin enters the short side of the U-shaped groove, the thrust of the installation disappears, and the rear tightening spring rebounds to press the insulating sleeve, so that the pin is pressed against the top of the short side of the U-shaped groove, and the disassembly connection between the insulating sleeve and the handle is completed. When disassembly is required, the reverse operation can be performed.

[0013] Preferably, the front end of the outer wall of the connecting sleeve is provided with a connecting sleeve external thread, and the connecting sleeve external thread is threadedly connected with the small threaded hole of the handle; the front end of the connecting sleeve is provided with a second pull rod hole, and the long pull rod is inserted into the second pull rod hole and fixedly connected with the connecting sleeve, and the rear end of the connecting sleeve is provided with an electrode connecting external thread, and the electrode connecting external thread is installed and matched with the electrode internal thread hole at the front end of the electrode connector. The long pull rod and the connecting sleeve are fixed by laser welding; the connecting sleeve external thread is threadedly connected with the small threaded hole of the handle and fixed with glue, and the electrode connecting external thread is threadedly connected with the electrode internal thread hole at the front end of the electrode connector, and installed and matched with glue.

[0014] Preferably, the diameter of the front end of the insulating sleeve is larger than the diameter of the insulating sleeve straight rod at the rear end of the insulating sleeve, the front end of the insulating sleeve and the insulating sleeve straight rod at the rear end of the insulating sleeve are smoothly transitioned, and the outer wall of the front end of the insulating sleeve is provided with an anti-skid groove. The provision of the anti-skid groove can facilitate pushing or rotating the insulating sleeve. The U-shaped groove is provided on the insulating sleeve straight rod.

[0015] Preferably, a straight groove is provided at the rear end of the electrode connector for connecting to a high-frequency cable.

[0016] The overall installation process: the connecting sleeve, the long pull rod and the movable mechanism are connected as one, and then the connecting sleeve is threadedly connected with the handle and the electrode joint at the same time and fixed with glue, and then the adapter and the inner tube are fixed, and then the rear tightening spring is sleeved on the outer periphery of the inner tube and fixed with the adapter, and then the adapter and the inner tube are sleeved on the outer periphery of the long pull rod, and the adapter is threadedly connected with the large threaded hole of the handle and fixed with glue, and then the insulating sleeve is inserted into the large through hole of the handle, and the U-shaped groove of the insulating sleeve is connected with the pin shaft, and then the insulating outer tube is sleeved on the outer periphery of the inner tube, and the rear end of the insulating outer tube is inserted into the large hole of the insulating sleeve, and then the insulating sleeve and the insulating outer tube are pushed backward, the rear tightening spring is compressed, and then the rotating sleeve boss block of the head assembly is clamped in the boss slot, when the thrust of the head assembly is withdrawn, the rear tightening spring rebounds, the insulating outer tube is pushed to the electrode insulating step, and the insulating outer tube is clamped between the shoulder of the insulating sleeve step hole and the electrode insulating step.

[0017] The long pull rod, rear tension spring, adapter, connecting sleeve and electrode connector are all made of stainless steel, and the handle is made of PPSU.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention has a compact structure, reasonable design, and easy operation. It can be disassembled into four parts: a head assembly, an insulating outer tube, an insulating sleeve, and a handle assembly. On the one hand, it is conducive to thorough cleaning and disinfection to avoid cross infection. On the other hand, each wearing part can be replaced separately to reduce hospital maintenance and use costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a detachable electrocoagulation surgical hook;

[0021] Figure 2 It is a stereogram of the head assembly;

[0022] Figure 3 is a cross-sectional view of the head assembly;

[0023] Figure 4 It is a three-dimensional diagram of the insulating sleeve;

[0024] Figure 5 is a cross-sectional view of the insulating sleeve;

[0025] Figure 6 is a schematic diagram of the handle assembly structure;

[0026] Figure 7 It is a schematic diagram of the structure of the activity mechanism;

[0027] Figure 8It is a schematic diagram of the structure of the front end of the inner tube;

[0028] Fig. 9 It is a schematic diagram of the structure of the connection between the front end of the inner tube and the rotating sleeve.

[0029] In the figure: 1. head assembly; 2. insulating outer tube; 3. insulating sleeve; 4. handle assembly;

[0030] 11. Electric hook core; 12. Electrode insulation head; 121. Upper electrode insulation large hole; 122. Lower electrode insulation small hole; 123. Electrode insulation step; 13. Rotating sleeve; 131. Hook core through hole; 132. Rotating sleeve boss block;

[0031] 31. Insulation sleeve large hole; 32. Insulation sleeve small hole; 33. Anti-slip groove; 34. Insulation sleeve straight rod; 35. U-shaped groove;

[0032] 41. Movable mechanism; 411. Front push rod; 4111. Push rod small polished rod; 4112. Push rod large polished rod; 412. Retaining ring; 4121. Retaining ring hole; 413. Sleeve; 4131. Sleeve small hole; 4132. Sleeve large hole; 414. Front tension spring; 415. Rear push rod; 4151. Push rod plug rod; 4152. Pull rod hole 1;

[0033] 42, inner tube; 421, V-shaped slot; 422, boss slot; 43, long tie rod;

[0034] 44, handle; 441, large through hole of handle; 442, large threaded hole of handle; 443, small threaded hole of handle; 444, pin hole; 445, pin;

[0035] 45. rear tightening spring; 46. adapter; 461. adapter through hole; 462. adapter external thread;

[0036] 47, connecting sleeve; 471, second pull rod hole; 472, electrode connecting external thread; 473, connecting sleeve external thread; 48, electrode connector; 481, electrode internal thread hole; 482, slot. DETAILED DESCRIPTION

[0037] The present invention will be further described below in conjunction with the accompanying drawings:

[0038] like Figure 1-Figure 9The detachable electrocoagulation surgical hook of the present invention comprises a head assembly 1, an insulating outer tube 2, an insulating sleeve 3 and a handle assembly 4; the handle assembly 4 comprises an inner tube 42, a handle 44, a long pull rod 43 and an electrode connector 48, the electrode connector 48 is arranged at the rear end of the handle 44, the electrode connector 48 is detachably connected to the head assembly 1 through the long pull rod 43, the rear end of the inner tube 42 is connected to the handle 44, and the front end of the inner tube 42 is detachably connected to the head assembly 1; the insulating outer tube 2 and the insulating sleeve 3 are sleeved on the outer periphery of the inner tube 42, and the insulating sleeve 3 is detachably connected to the handle 44; the insulating outer tube 2 is arranged between the insulating sleeve 3 and the head assembly 1.

[0039] In this embodiment:

[0040] The head assembly 1 comprises an electric hook core 11, an electrode insulating head 12 and a rotating sleeve 13. The front end of the electric hook core 11 is provided with a hook. The electrode insulating head 12 is provided with an upper electrode insulating large hole 121 and a lower electrode insulating small hole 122, and the outer wall of the electrode insulating head 12 is provided with an electrode insulating step 123. The rotating sleeve 13 is provided with a hook core through hole 131, and the front end of the rotating sleeve 13 is inserted into the upper electrode insulating large hole 121 for fixing. The electric hook core 11 passes through the lower electrode insulating small hole 122 and the hook core through hole 131 in sequence, and the rear end of the electric hook core 11 is fixed to the lower electrode insulating small hole 122 and the hook core through hole 131. Rotating sleeve boss blocks 132 are fixed on both sides of the outer wall of the rear end of the rotating sleeve 13, and the rotating sleeve boss blocks 132 are detachably connected to the handle assembly 4. The front end of the insulating outer tube 2 is sleeved on the rear end of the electrode insulating head 12, and the front end of the insulating outer tube 2 matches the electrode insulating step 123. The electric hook core 11 and the rotating sleeve 13 are made of stainless steel, and the electrode insulating head 12 is made of zirconium oxide. The diameters of the electrode insulation small hole and the hook core through hole 131 match the diameter of the electric hook core 11, the front end diameter of the rotating sleeve 13 matches the diameter of the upper electrode insulation large hole 121, the electrode insulation head 12 and the rotating sleeve 13 can be fixed by gluing, and the rear end of the electric hook core 11 and the rotating sleeve 13 can be fixed by laser welding.

[0041] The insulating sleeve 3 is provided with a stepped hole, the large end of the stepped hole is the insulating sleeve large hole 31, which is located at the front end of the insulating sleeve 3, and the small end of the stepped hole is the insulating sleeve small hole 32, which is located at the rear end of the insulating sleeve 3; the outer wall of the rear end of the insulating sleeve 3 is provided with a U-shaped groove 35, and the insulating sleeve 3 is detachably connected to the handle assembly 4 through the U-shaped groove 35; the rear end of the insulating outer tube 2 is inserted into the insulating sleeve large hole 31. The insulating outer tube 2 is arranged between the shoulder of the stepped hole of the insulating sleeve 3 and the electrode insulating step 123. As the head assembly 1 is connected to the handle assembly 4 and the insulating sleeve 3 is connected to the handle assembly 4, the position of the insulating outer tube 2 is fixed accordingly, and the force of the rear tightening spring 45 is relatively large. When in use, the insulating outer tube 2 supports the head assembly 1 to prevent the electric hook core 11 from compressing the front tightening spring 414 when electrocoagulation hemostasis and electrocuting separation of tissues. The insulating sleeve 3 can be made of PPSU. One side groove of the U-shaped groove 35 runs through the top of the rear end of the insulating sleeve 3, and the other side groove is shorter, and its top is located on the outer wall of the insulating sleeve 3.

[0042] The movable mechanism 41 and the long pull rod 43 are sleeved in the inner tube 42; the movable mechanism 41 includes a front push rod 411, a retaining ring 412, a sleeve 413, a front tension spring 414 and a rear push rod 415; the outer wall of the front push rod 411 is stepped, and its large end and small end are respectively a large push rod 4112 and a small push rod 4111; the inner hole of the sleeve 413 is a stepped hole, and the large hole end and the small hole end of the stepped hole are respectively a large sleeve hole 4132 and a small sleeve hole 4131, the retaining ring 412 is arranged in the small sleeve hole 4131, and the retaining ring 412 is fixed with the small sleeve hole 4131, and the inner cavity of the retaining ring 412 is a retaining ring hole 4121; The front end of the push rod 415 is stepped, and the small head end of the rear push rod 415 is located at the front end of the rear push rod 415, which is a push rod insertion rod 4151. The rear end of the rear push rod 415 is provided with a pull rod hole 4152, and the long pull rod 43 is fixedly connected to the rear push rod 415 through the pull rod hole 4152; the large push rod 4112 is located in the front end of the large hole 4132 of the sleeve, the small push rod 4111 passes through the retaining ring hole 4121, and the push rod insertion rod 4151 is inserted into the large hole 4132 of the sleeve, and the two ends of the front tightening spring 414 are respectively abutted against the large push rod 4112 and the push rod insertion rod 4151; the rear push rod 415 is connected and fixed to the sleeve 413. During assembly, the retaining ring 412 is fixed to the sleeve 413, the small push rod 4111 of the front push rod 411 passes through the retaining ring hole 4121, and then the front tensioning spring 414 is inserted, and then the push rod insertion rod 4151 of the rear push rod 415 is inserted, so that the two ends of the front tensioning spring 414 are respectively abutted against the large push rod 4112 and the push rod insertion rod 4151, the retaining ring 412 and the sleeve 413, the rear push rod 415 and the sleeve 413 are fixed by laser welding, and the push rod insertion rod The diameter of 4151 matches the diameter of the large hole 4132 of the sleeve; when the head assembly 1 is installed, the head assembly 1 will apply a thrust to the small polished rod 4111 end of the front push rod 411, and the front push rod 411 moves backward inside the sleeve 413, and drives the front pressing spring 414 to compress. When the head assembly 1 is installed in place, the thrust disappears, the front pressing spring 414 rebounds, and pushes the front push rod 411 to move forward inside the sleeve 413, and the front push rod 411 presses the head assembly 1. The front push rod 411, the retaining ring 412, the sleeve 413, the front pressing spring 414 and the rear push rod 415 can all be made of stainless steel.

[0043] The inner tube 42 is a hollow structure, with a V-shaped slot 421 on both sides of the front end. A boss slot 422 is provided at the bottom of the V-shaped slot 421 , and the rotating boss block 132 is inserted from the V-shaped slot 421 and clamped in the boss slot 422 . Specific operation process During installation, the two rotating sleeve boss blocks 132 are respectively inserted backward along the two V-shaped grooves 421. After being inserted to the bottom of the V-shaped groove 421, the rotating sleeve 13 is rotated to a certain angle, and the two rotating sleeve boss blocks 132 are respectively stuck in the boss slots 422. In the process of inserting the rotating sleeve boss blocks 132 backward along the V-shaped groove 421, the front tightening spring 414 is gradually compressed. When the rotating sleeve boss blocks 132 are stuck in the boss slots 422, the thrust is withdrawn, and the front tightening spring 414 drives the front push rod 411 to press the rotating sleeve boss blocks 132 in the boss slots 422, and the connection between the head assembly 1 and the handle assembly 4 is completed; when disassembly is required, manually apply thrust to the head assembly 1 to disengage the rotating sleeve boss blocks 132 from the boss slots 422, and then rotate in the opposite direction to make the rotating sleeve boss blocks 132 fall out along the V-shaped grooves 421. The disassembly and assembly process is simple and convenient.

[0044] The inner hole of the handle 44 is stepped, the large end of the stepped inner hole is a large handle through hole 441, the small end of the stepped inner hole is a small handle threaded hole 443, the large handle threaded hole 442 is between the small handle threaded hole 443 and the large handle through hole 441, and the large handle through hole 441, the large handle threaded hole 442 and the small handle threaded hole 443 are arranged from front to back along the handle 44; a pin hole 444 is provided on the wall of the large handle through hole 441, a pin 445 is fixed in the pin hole 444, and the pin 445 cooperates with the insulating sleeve 3 to realize a detachable connection; the inner tube 42 is connected to the handle 44 through an adapter 46, and the long pull rod 43 is connected to the handle 44 through a connecting sleeve 47. The pin 445 is fixed in the pin hole 444 by means of glue coating or the like; the rear end diameter of the insulating sleeve 3 matches the diameter of the large through hole 441 of the handle. When the insulating sleeve 3 and the handle 44 are installed, the insulating sleeve 3 is inserted backward along the large through hole 441 of the handle. When the U-shaped groove 35 of the insulating sleeve 3 moves to the pin 445, the pin 445 enters the bottom end of the U-shaped groove 35 along the long groove on one side of the U-shaped groove 35. Then, the insulating sleeve 3 is rotated by a certain angle, and the pin 445 enters the short side of the U-shaped groove 35. The diameter of the large threaded hole 442 of the handle is slightly smaller than the diameter of the large through hole 441 of the handle.

[0045] The adapter 46 is provided with a joint through hole 461 inside, the inner tube 42 is inserted into the joint through hole 461, and the inner tube 42 is fixedly connected to the adapter 46, and the outer wall of the adapter 46 is provided with a joint external thread 462, and the joint external thread 462 is threadedly connected and fixed with the large threaded hole 442 of the handle; and the outer periphery of the inner tube 42 is sleeved with a rear tightening spring 45, the rear end of the rear tightening spring 45 is fixedly connected with the adapter 46, and the front end of the rear tightening spring 45 is in contact with the insulating sleeve 3. The inner tube 42 and the adapter 46 are fixed by laser welding, the joint external thread 462 is threadedly connected with the large threaded hole 442 of the handle and fixed by glue coating, and the rear end of the rear tightening spring 45 is fixed with the adapter 46 by laser welding. When installing the insulating sleeve 3, the pin 445 gradually compresses the rear tightening spring 45 during the process of entering the bottom end of the U-shaped groove 35 along the long groove on one side of the U-shaped groove 35, and then the insulating sleeve 3 is rotated a certain angle. When the pin 445 enters the short side of the U-shaped groove 35, the installation thrust disappears, and the rear tightening spring 45 rebounds and presses the insulating sleeve 3, so that the pin 445 is pressed against the top of the short side of the U-shaped groove 35. The disassembly connection between the insulating sleeve 3 and the handle 44 is completed. When disassembly is required, the reverse operation can be performed.

[0046] The front end of the outer wall of the connecting sleeve 47 is provided with a sleeve external thread 473, and the sleeve external thread 473 is threadedly connected with the small threaded hole 443 of the handle; the front end of the connecting sleeve 47 is provided with a second pull rod hole 471, and the long pull rod 43 is inserted into the second pull rod hole 471 and fixedly connected with the connecting sleeve 47, and the rear end of the connecting sleeve 47 is provided with an electrode connection external thread 472, and the electrode connection external thread 472 is installed and matched with the electrode internal thread hole 481 at the front end of the electrode connector 48. The long pull rod 43 and the connecting sleeve 47 are fixed by laser welding; the sleeve external thread 473 is threadedly connected with the small threaded hole 443 of the handle and fixed with glue, and the electrode connection external thread 472 is threadedly connected with the electrode internal thread hole 481 at the front end of the electrode connector 48, and installed and fixed with glue.

[0047] The diameter of the front end of the insulating sleeve 3 is larger than the diameter of the insulating sleeve straight rod 34 at the rear end of the insulating sleeve 3. The front end of the insulating sleeve 3 and the insulating sleeve straight rod 34 at the rear end of the insulating sleeve 3 are smoothly transitioned, and the outer wall of the front end of the insulating sleeve 3 is provided with an anti-skid groove 33. The setting of the anti-skid groove 33 can facilitate pushing or rotating the insulating sleeve 3. The U-shaped groove 35 is set on the insulating sleeve straight rod 34.

[0048] A straight groove 482 is provided at the rear end of the electrode connector 48 for connecting to a high-frequency cable.

[0049] The overall installation process is as follows: the connecting sleeve 47, the long pull rod 43 and the movable mechanism 41 are connected as one, and then the connecting sleeve 47 is threadedly connected with the handle 44 and the electrode connector 48 at the same time and fixed with glue, and then the adapter 46 is fixed with the inner tube 42, and then the rear tension spring 45 is sleeved on the outer periphery of the inner tube 42 and fixed with the adapter 46, and then the adapter 46 and the inner tube 42 are sleeved on the outer periphery of the long pull rod 43, and the adapter 46 is threadedly connected with the large threaded hole 442 of the handle 44 and fixed with glue, and then the insulating sleeve 3 is inserted into the large through hole 441 of the handle. , the U-shaped groove 35 of the insulating sleeve 3 is matched and connected with the pin shaft 445, and then the insulating outer tube 2 is sleeved on the outer periphery of the inner tube 42, and the rear end of the insulating outer tube 2 is inserted into the large hole 31 of the insulating sleeve, and then the insulating sleeve 3 and the insulating outer tube 2 are pushed backward, the rear tightening spring 45 is compressed, and then the rotating sleeve boss block 132 of the head assembly 1 is clamped in the boss clamping groove 422. When the thrust of the head assembly 1 is withdrawn, the rear tightening spring 45 rebounds, and the insulating outer tube 2 is pushed to the electrode insulating step 123, and the insulating outer tube 2 is clamped between the stepped hole shoulder of the insulating sleeve 3 and the electrode insulating step 123.

[0050] The detachable electrocoagulation surgical hook can be disassembled into four parts, namely the head assembly 1, the insulating outer tube 2, the insulating sleeve 3 and the handle assembly 4. On the one hand, it is conducive to thorough cleaning and disinfection to avoid cross infection. On the other hand, each wearing part can be replaced individually to reduce the cost of use. The inner tube 42 can be made of stainless steel; the inside of the insulating outer tube 2 is a hollow structure, and the material can be selected from PEEK. The long pull rod 43, the rear tightening spring 45, the adapter 46, the connecting sleeve 47 and the electrode connector 48 are all made of stainless steel, and the handle 44 is made of PPSU. During the use of the electric hook core 11, the main function is electrocoagulation hemostasis and electrocution separation of tissues.

Claims

1. A detachable electrocoagulation surgical hook, characterized in that: The invention comprises a head assembly (1), an insulating outer tube (2), an insulating sleeve (3) and a handle assembly (4); the handle assembly (4) comprises a movable mechanism (41), an inner tube (42), a handle (44), a long pull rod (43) and an electrode connector (48); the electrode connector (48) is arranged at the rear end of the handle (44); the electrode connector (48) is detachably connected to the head assembly (1) via the long pull rod (43) and the movable mechanism (41); the rear end of the inner tube (42) is connected to the handle (44); the front end of the inner tube (42) is detachably connected to the head assembly (1); the insulating outer tube (2) and the insulating sleeve (3) are sleeved on the outer circumference of the inner tube (42); the insulating sleeve (3) is detachably connected to the handle (44); the insulating outer tube (2) is arranged between the insulating sleeve (3) and the head assembly (1); The head assembly (1) comprises an electric hook core (11), an electrode insulating head (12) and a rotating sleeve (13); the electric hook core (11) has a hook at the front end; the electrode insulating head (12) is provided with an upper electrode insulating large hole (121) and a lower electrode insulating small hole (122); and the outer wall of the electrode insulating head (12) is provided with an electrode insulating step (123); the rotating sleeve (13) is provided with a hook core through hole (131); the front end of the rotating sleeve (13) is inserted into the upper electrode insulating large hole (121) and fixed; the electric hook core (11) The electric hook core (11) passes through the lower electrode insulating small hole (122) and the hook core through hole (131) in sequence, and the rear end of the electric hook core (11) is fixed to the lower electrode insulating small hole (122) and the hook core through hole (131); rotating sleeve boss blocks (132) are fixed to both sides of the outer wall of the rear end of the rotating sleeve (13), and the rotating sleeve boss blocks (132) are detachably connected to the handle assembly (4); the front end of the insulating outer tube (2) is sleeved on the rear end of the electrode insulating head (12), and the front end of the insulating outer tube (2) matches the electrode insulating step (123); The inner hole of the handle (44) is stepped, the large end of the stepped inner hole is a large handle through hole (441), the small end of the stepped inner hole is a small handle threaded hole (443), the large handle threaded hole (442) is between the small handle threaded hole (443) and the large handle through hole (441), and the large handle through hole (441), the large handle threaded hole (442) and the small handle threaded hole (443) are arranged from front to back along the handle (44); a pin hole (444) is provided at the wall of the large handle through hole (441), a pin (445) is fixed in the pin hole (444), and the pin (445) cooperates with the insulating sleeve (3) to realize a detachable connection; the inner tube (42) is connected to the handle (44) through an adapter (46), and the long pull rod (43) is connected to the handle (44) through a connecting sleeve (47).

2. The detachable electrocoagulation surgical hook according to claim 1, characterized in that: The insulating sleeve (3) is provided with a stepped hole, the large end of the stepped hole is the insulating sleeve large hole (31), which is located at the front end of the insulating sleeve (3), and the small end of the stepped hole is the insulating sleeve small hole (32), which is located at the rear end of the insulating sleeve (3); the outer wall of the rear end of the insulating sleeve (3) is provided with a U-shaped groove (35), and the insulating sleeve (3) is detachably connected to the handle assembly (4) through the U-shaped groove (35); the rear end of the insulating outer tube (2) is inserted into the insulating sleeve large hole (31).

3. The detachable electrocoagulation surgical hook according to claim 1, characterized in that: The movable mechanism (41) and the long pull rod (43) are sleeved in the inner tube (42); the movable mechanism (41) comprises a front push rod (411), a retaining ring (412), a sleeve (413), a front tensioning spring (414) and a rear push rod (415); the outer wall of the front push rod (411) is stepped, and its large end and small end are respectively a large push rod polished rod (4112) and a small push rod polished rod (4111); the inner hole of the sleeve (413) is a stepped hole, and the large hole end and small hole end of the stepped hole are respectively a large sleeve hole (4132) and a small sleeve hole (4131); the retaining ring (412) is arranged in the small sleeve hole (4131), and the retaining ring (412) and the small sleeve hole (4131) are matched and fixed, and the inner cavity of the retaining ring (412) is a retaining ring hole (4121); The front end of the rear push rod (415) is stepped. The small end of the rear push rod (415) is located at the front end of the rear push rod (415) and is a push rod insertion rod (4151). A pull rod hole (4152) is provided at the rear end of the rear push rod (415). The long pull rod (43) is fixedly connected to the rear push rod (415) through the pull rod hole (4152). The large push rod (4112) is located in the front end of the large hole (4132) of the sleeve. The small push rod (4111) passes through the retaining ring hole (4121). The push rod insertion rod (4151) is inserted into the large hole (4132) of the sleeve. The two ends of the front tensioning spring (414) are respectively in contact with the large push rod (4112) and the push rod insertion rod (4151). The rear push rod (415) is fixedly connected to the sleeve (413).

4. The detachable electrocoagulation surgical hook according to claim 1, characterized in that: The inner tube (42) is a hollow structure, and has a V-shaped slot (421) on both sides of its front end. A boss slot (422) is provided at the bottom of the V-shaped slot (421). The rotating boss block (132) is inserted from the V-shaped slot (421) and is locked in the boss slot (422).

5. The detachable electrocoagulation surgical hook according to claim 1, characterized in that: The adapter (46) is provided with a connector through hole (461) inside, the inner tube (42) is inserted into the connector through hole (461), and the inner tube (42) is fixedly connected to the adapter (46). The outer wall of the adapter (46) is provided with a connector external thread (462), and the connector external thread (462) is threadedly connected and fixed to the large threaded hole (442) of the handle; and a rear tightening spring (45) is sleeved on the outer periphery of the inner tube (42), the rear end of the rear tightening spring (45) is fixedly connected to the adapter (46), and the front end of the rear tightening spring (45) is in contact with the insulating sleeve (3).

6. The detachable electrocoagulation surgical hook according to claim 1, characterized in that: The front end of the outer wall of the connecting sleeve (47) is provided with a connecting sleeve external thread (473), and the connecting sleeve external thread (473) is threadedly connected to the small threaded hole (443) of the handle; the front end of the connecting sleeve (47) is provided with a second pull rod hole (471), and the long pull rod (43) is inserted into the second pull rod hole (471) to be fixedly connected to the connecting sleeve (47); the rear end of the connecting sleeve (47) is provided with an electrode connecting external thread (472), and the electrode connecting external thread (472) is installed and matched with the electrode internal thread hole (481) at the front end of the electrode connector (48).

7. The detachable electrocoagulation surgical hook according to claim 2, characterized in that: The diameter of the front end of the insulating sleeve (3) is greater than the diameter of the rear end of the insulating sleeve (3), the front end of the insulating sleeve (3) and the rear end of the insulating sleeve (3) are smoothly transitioned, and the outer wall of the front end of the insulating sleeve (3) is provided with an anti-slip groove (33).

8. The detachable electrocoagulation surgical hook according to claim 1 or 6, characterized in that: A slot (482) is provided at the rear end of the electrode connector (48).

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