CN109009412B

CN109009412B - Electric coagulation cutter

Info

Publication number: CN109009412B
Application number: CN201810887870.3A
Authority: CN
Inventors: 蔡剑辉; 夏丽敏; 吴祥斌
Original assignee: First Affiliated Hospital of Wenzhou Medical University
Current assignee: First Affiliated Hospital of Wenzhou Medical University
Priority date: 2018-08-06
Filing date: 2018-08-06
Publication date: 2020-07-14
Anticipated expiration: 2038-08-06
Also published as: CN109009412A

Abstract

The invention discloses an electrocoagulation cutter beneficial to improving the visibility of an operation field, which has the technical scheme that the electrocoagulation cutter comprises a hollow conductive tube, an insulating tube, a plastic handle and a cutter head, wherein the cutter head is in a sheet structure and is positioned on one side of the end surface of the hollow conductive tube and is integrally arranged with the hollow conductive tube; the cutter head with the sheet structure is also bent into an arc-shaped structure along the axial section of the hollow conductive tube, one side of the length of the cutter head is connected with the hollow conductive tube, and the other side of the length of the cutter head is bent towards the longitudinal axis of the hollow conductive tube; the tool bit is including main cutting edge and vice cutting edge, and two vice cutting edges run through in the relative both sides of main cutting edge, and main cutting edge outwards the arch is established into the arc structure and is set up, and vice cutting edge inwards the indent is established into the arc structure and is set up, and the width dimension of tool bit is not more than the external diameter size of hollow conductive tube.

Description

Electric coagulation cutter

Technical Field

The invention relates to the technical field of medical instruments, in particular to an electrocoagulation cutter.

Background

With the development of science and technology, medical instruments are developing in the mainstream direction of minimizing surgical wounds on the premise of ensuring safety and effectiveness. Electrocoagulation cutters are an important tool in a wide range of surgical procedures for performing electrocoagulation and electrosection. Compared with the traditional scalpel, the electric scalpel has the advantages of less bleeding and high efficiency, so that the electric scalpel becomes a necessary instrument for many surgeons.

The electrocoagulation cutter comprises a hollow conductive tube, an insulating tube sleeved on the hollow conductive tube, a plastic handle positioned at one end of the hollow conductive tube, and a cutter head positioned at the other end of the hollow conductive tube, wherein the plastic handle is provided with a manual control button switch, and the cutter head extends out of the end of the insulating tube. However, most of the existing tool bit structures are provided with a bevel plane at the end of the hollow conductive tube, so that the end of the hollow conductive tube forms a tool bit with a cutting edge, but the tip of the tool bit is a straight head, which is not suitable for observation and operation in a doctor operation, thereby affecting the precision of the doctor operation.

Disclosure of Invention

In view of the deficiencies of the prior art, it is an object of the present invention to provide an electrocoagulation cutter which facilitates enhanced visibility of the surgical field.

In order to achieve the purpose, the invention provides the following technical scheme: an electrocoagulation cutter comprises a hollow conductive tube, an insulating tube sleeved on the hollow conductive tube, a plastic handle positioned at one end of the hollow conductive tube, and a cutter head positioned at the other end of the hollow conductive tube, wherein the cutter head is in a sheet structure and positioned at one side of the end face of the hollow conductive tube and is integrally arranged with the hollow conductive tube; the cutter head with the sheet structure is also bent into an arc-shaped structure along the axial section of the hollow conductive tube, one side of the length of the cutter head is connected with the hollow conductive tube, and the other side of the length of the cutter head is bent towards the longitudinal axis of the hollow conductive tube;

the tool bit is including the main cutting edge that is located tool bit tip and the vice cutting edge that is located tool bit width both sides, and two vice cutting edges run through in the relative both sides of main cutting edge, the setting of arc structure is established to main cutting edge evagination, vice cutting edge inwards indent is established the setting of arc structure, and two vice cutting edges are less than tool bit remainder's width dimension in the interval size between interior recess, the width dimension of tool bit is not more than the external diameter size of hollow conductive tube.

The invention is further configured to: the plastic handle is internally provided with a circuit board, and further comprises a first switch arranged on the plastic handle and used for switching on the electric coagulation function of the circuit board, and a second switch arranged on the plastic handle and used for switching on the electric coagulation function of the circuit board, the plastic handle is further provided with an inserting hole used for inserting the hollow conductive tube, the inserting hole penetrates through the two opposite ends of the plastic handle, the circuit board is obliquely provided with a conductive elastic sheet used for electrically connecting the circuit board and the hollow conductive tube, one end of the conductive elastic sheet is fixedly connected with the circuit board, the other end of the conductive elastic sheet obliquely extends into the inserting hole, and the hollow conductive tube is inserted from one end of the inserting hole and can be abutted against the outer side wall of the hollow conductive tube after penetrating out from.

The invention is further configured to: the plastic handle is provided with a plurality of locking sheets which can be abutted against the outer side wall of the hollow conductive tube and extend outwards from the end part of the plug hole, the locking sheets and the plastic handle are integrally arranged, the length direction of the locking sheets is consistent with the length direction of the plug hole, each locking sheet is arranged at the end part of the plug hole in a surrounding mode to form an annular structure, the plug hole and each locking sheet are coaxially arranged in the surrounding mode to form the annular structure, deformation gaps are reserved between adjacent locking sheets, the plastic handle is in threaded connection with a locking cap used for shrinking each locking sheet at the end part of the plug hole, the locking cap comprises a connecting ring used for being in threaded connection with the plastic handle and a locking ring used for shrinking each locking sheet, the connecting ring and the locking ring are coaxially arranged, the inner wall of the locking ring is structurally arranged in a conical shape, and the inner diameter size of the locking ring towards one end of the connecting ring is, the locking pieces are gradually folded under the pushing action of the inner wall of the locking ring in the process that the locking cap is in threaded connection with the plastic handle until all the locking pieces are clamped on the outer side wall of the hollow conductive tube.

The invention is further configured to: the two sections of the insulating tubes are respectively positioned at two ends of the hollow conductive tube, and the hollow conductive tube exposed between the two insulating tubes is positioned in the plastic handle; the insulation tube is characterized in that the outer side wall of the insulation tube, far away from the end, provided with the tool bit, of the hollow conductive tube is provided with a plurality of anti-drop rings in a surrounding mode, the anti-drop rings are arranged in a row along the length direction of the insulation tube and are arranged in a conical structure, and the outer diameter of the anti-drop rings towards the end, far away from the end, of the tool bit is larger than that of the anti-drop rings towards the end, far away from the end.

The invention is further configured to: an auxiliary negative pressure port is formed in the side wall of the hollow conductive tube, which is close to one end of the cutter head, the auxiliary negative pressure port and the cutter head are positioned on the same side of the hollow conductive tube, a sealing cover capable of covering the auxiliary negative pressure port is hinged in the auxiliary negative pressure port, one side of the sealing cover, which is close to the cutter head, is hinged with the hollow conductive tube, and the auxiliary negative pressure port, the sealing cover and the cross section of the hollow conductive tube are matched in size; the hinged shaft fixedly connected with steel wire flexible axle of closing cap and hollow electric conduction pipe, the steel wire flexible axle other end runs through hollow electric conduction pipe lateral wall and outwards extends from the plastics handle.

The invention is further configured to: offer the scarf joint groove that is used for supplying steel wire flexible axle embedding on the lateral wall of hollow conductive tube, the scarf joint groove is around locating on the lateral wall of hollow conductive tube to one end switches on to closing cap and the articulated shaft department of hollow conductive tube, and the other end switches on to between two sections insulating tubes in the plastics handle, and the insulating tube of cladding on the hollow conductive tube lateral wall covers the opening in scarf joint groove.

The invention is further configured to: the seal cover is made of silicone.

In conclusion, the invention has the following beneficial effects: in the electrotomy process, the cutter head with the sheet structure is bent into an arc-shaped structure along the radial section of the hollow conductive tube, and the two sides of the width of the cutter head are bent towards the longitudinal axis of the hollow conductive tube, so that the arc-shaped cutter head can be favorably and fully contacted with the tumor when being pressed on the inner wall of the tissue, the tumor can be cut off at one time, and the operation efficiency can be favorably improved; in addition, the cutter head with the sheet structure is arranged in an arc-shaped structure by bending along the axial section of the hollow conductive tube, one side of the length of the cutter head is connected with the hollow conductive tube, and the other side of the length of the cutter head is bent towards the longitudinal axis of the hollow conductive tube, so that the cutting edge at the front end of the cutter head tilts towards the longitudinal axis of the hollow conductive tube, and a doctor can conveniently cut off tumor blocks under the visual cooperation of a laparoscope after inserting the hollow conductive tube into an affected part. The hollow conductive tube is inserted obliquely when a doctor extends the hollow conductive tube into an affected part, the cutting edge at the front end of the cutter head is positioned below, and the laparoscope entering from the rear side is not beneficial to observing the position of the cutting edge of the cutter head, so that the cutting edge of the cutter head is lifted upwards to a certain height after tilting towards the longitudinal axis of the hollow conductive tube, and the position of the cutting edge of the cutter head is conveniently observed by the laparoscope; and because the hollow conductive tube is obliquely inserted into the affected part, when the tip of the cutter head is straight, the cutter head is pushed along the length direction of the hollow conductive tube, so that the tip of the cutter head is easy to insert into the inner wall of the tissue, and the operation risk is increased, the hollow conductive tube needs to be horizontally moved, however, since the hollow conductive tube is inserted into the body through the channel, the hollow conductive tube cannot be moved horizontally, so the existing operation mode is that a doctor pushes the cutter head along the length direction of the hollow conductive tube, and the other cutter head is gradually tilted upwards in the process of pushing the hollow conductive tube so as to prevent the tip end of the cutter head from being inserted into the inner wall of the tissue, although the mode can prevent the tip of the cutter head from being inserted into the inner wall of the tissue, the control posture (a second switch for switching on the circuit board and the electric switch) and the force applying mode have different ergonomics, the control intensity of a doctor is increased, and the doctor is often tired abnormally in one operation; consequently, also buckle into arc structure setting along the axial cross-section of hollow current conducting tube with sheet structure's tool bit, can directly make doctor with hollow current conducting tube length direction propelling movement tool bit, can enough amputate the tumor piece, also can not insert the tissue inner wall with the tool bit, when having ensured the operation security, also greatly reduced doctor control intensity.

The main cutting edge is outwards protruded to form an arc-shaped structure, so that the sharpness of the main cutting edge is increased, and a doctor can conveniently cut off a tumor; and the nicks formed by the two auxiliary cutting edges can be used for hooking and cutting the nubs to be cut off, so that the using mode of the cutter head is increased, the application range of the cutter head is favorably expanded, and the control flexibility of the cutter is favorably improved.

Drawings

FIG. 1 is a cross-sectional view of an electrocoagulation cutter;

FIG. 2 is a cross-sectional view of a hollow conductive tube at one end of a cutting head;

fig. 3 is a cross-sectional view taken at a-a in fig. 2.

Reference numerals: 1. a hollow conductive tube; 11. an auxiliary negative pressure port; 12. sealing the cover; 13. a steel wire flexible shaft; 2. an insulating tube; 21. the anti-drop ring; 3. a plastic handle; 31. a circuit board; 32. a first switch; 33. a second switch; 34. inserting holes; 35. a conductive spring plate; 36. a locking piece; 37. a locking cap; 371. a connecting ring; 372. locking a ring; 4. a cutter head; 41. a main cutting edge; 42. and a secondary cutting edge.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Referring to fig. 1-3, an electrocoagulation cutter comprises a hollow conductive tube 1, an insulating tube 2 sleeved on the hollow conductive tube 1, a plastic handle 3 positioned at one end of the hollow conductive tube 1, and a cutter head 4 positioned at the other end of the hollow conductive tube 1, wherein the hollow conductive tube 1 can be made of copper materials into a tubular structure, the insulating tube 2 and the plastic handle 3 can be made of insulating materials, and the cutter head 4 extends out of the end part of the insulating tube 2; the cutter head 4 is in a sheet structure and is positioned on one side of the end face of the hollow conductive tube 1 and is integrally arranged with the hollow conductive tube 1, the cutter head 4 in the sheet structure is bent into an arc structure along the radial section of the hollow conductive tube 1, and the two sides of the width of the cutter head 4 are bent towards the longitudinal axis of the hollow conductive tube 1; the cutter head 4 with a sheet structure is also bent into an arc-shaped structure along the axial section of the hollow conductive tube 1, one side of the length of the cutter head 4 is connected with the hollow conductive tube 1, and the other side is bent towards the longitudinal axis of the hollow conductive tube 1; the width of the tool bit 4 is bent towards the longitudinal axis of the hollow conductive tube 1; the section of the cutter head 4 with the sheet structure along the axial direction of the hollow conductive tube 1 is also bent into an arc structure, and the circle center of the cutter head 4 bent into the arc structure is positioned at one side of the cutter head 4 close to the hollow conductive tube 1; namely, the sheet-shaped cutter head 4 is bent into an arc-shaped structure along the transverse direction and the longitudinal direction.

In the electrotomy process of the cutter head 4, the cutter head 4 with the sheet structure is bent into an arc-shaped structure along the radial section of the hollow conductive tube 1, and the two sides of the width of the cutter head 4 are bent towards the longitudinal axis of the hollow conductive tube 1, so that the arc-shaped cutter head 4 can be in full contact with the tumor when being pressed on the inner wall of the tissue, the tumor can be cut off at one time, and the operation efficiency can be improved; in addition, the cutter head 4 with a sheet structure is also bent into an arc-shaped structure along the axial section of the hollow conductive tube 1, one side of the length of the cutter head 4 is connected with the hollow conductive tube 1, and the other side of the length of the cutter head is bent towards the longitudinal axis of the hollow conductive tube 1, so that the cutting edge at the front end of the cutter head 4 tilts towards the longitudinal axis of the hollow conductive tube 1, and a doctor can conveniently cut off tumor blocks under the visual cooperation of a laparoscope after inserting the hollow conductive tube 1 into an affected part obliquely. The hollow conductive tube 1 is inserted obliquely when a doctor extends the hollow conductive tube 1 into an affected part, the cutting edge at the front end of the cutter head 4 is positioned below, and a laparoscope entering from the rear side is not beneficial to observing the position of the cutting edge of the cutter head 4, so that the cutting edge of the cutter head 4 is lifted upwards to a certain height after tilting towards the longitudinal axis of the hollow conductive tube 1, and the position of the cutting edge of the cutter head 4 is conveniently observed by the laparoscope; moreover, because the hollow conductive tube 1 is obliquely inserted into the affected part, when the tip of the knife head 4 is straight, the knife head 4 is pushed along the length direction of the hollow conductive tube 1, so that the tip of the knife head 4 is easily inserted into the inner wall of the tissue, and the operation risk is increased, the hollow conductive tube 1 needs to be moved horizontally, and because the hollow conductive tube 1 is inserted into the body through the channel, the hollow conductive tube 1 cannot be moved horizontally, therefore, the existing operation mode is that a doctor pushes the knife head 4 along the length direction of the hollow conductive tube 1, and gradually tilts the knife head 4 upwards in the process of pushing the hollow conductive tube 1, so as to prevent the tip of the knife head 4 from being inserted into the inner wall of the tissue, but the operation posture (the second switch 33 for connecting the circuit board 31 to cut) and the force mode have the human body engineering, thereby increasing the operation intensity of the doctor, the fatigue is often abnormal after one operation; consequently, also buckle into arc structure setting with the blade structure's tool bit 4 along the axial cross-section of hollow current conducting tube 1, can directly make the doctor with 1 length direction propelling movement tool bit 4 of hollow current conducting tube, can enough amputate the tumor, also can not insert the tissue inner wall with tool bit 4, when having ensured the operation security, also greatly reduced doctor's the intensity of controlling.

The cutting head 4 comprises a main cutting edge 41 positioned at the end part of the cutting head 4 and auxiliary cutting edges 42 positioned at two sides of the width of the cutting head 4, the two auxiliary cutting edges 42 are connected with two opposite sides of the main cutting edge 41, the main cutting edge 41 is outwards protruded to form an arc-shaped structure, the auxiliary cutting edges 42 are inwards concaved to form an arc-shaped structure, the distance between the two auxiliary cutting edges 42 at the concave part is smaller than the width of the rest part of the cutting head 4, and the width of the cutting head 4 is not larger than the outer diameter of the hollow conductive tube 1. The outward convex shape of the main cutting edge 41 is beneficial to increasing the sharpness of the main cutting edge 41, so that a doctor can conveniently cut off nubs; and the gaps formed by the two auxiliary cutting edges 42 can be used for hooking and cutting the nubs to be cut off, so that the using mode of the cutter head 4 is increased, the application range of the cutter head 4 is favorably expanded, and the control flexibility of the cutter is favorably improved.

The plastic handle 3 is internally provided with a circuit board 31, and also comprises a first switch 32 which is arranged on the plastic handle 3 and is used for connecting the electrocoagulation function of the circuit board 31, and also comprises a second switch 33 which is arranged on the plastic handle 3 and is used for connecting the electrotomy function of the circuit board 31, wherein the circuit board 31, the first switch 32 and the second switch 33 are the known technology and adopt the common design; the plastic handle 3 is further provided with a plug hole 34 for supplying the hollow conductive tube 1 to insert, the plug hole 34 runs through the two opposite ends of the plastic handle 3, the circuit board 31 is provided with a conductive elastic sheet 35 for electrically connecting the circuit board 31 and the hollow conductive tube 1, one end of the conductive elastic sheet 35 is fixedly connected with the circuit board 31, the other end of the conductive elastic sheet extends to the plug hole 34 in an inclined manner, the hollow conductive tube 1 is inserted from one end of the plug hole 34 and the conductive elastic sheet 35 can abut against the outer side wall of the hollow conductive tube 1 after the other end of the plug hole 34 is penetrated out. The hollow conductive tube 1 is detachably connected with the plastic handle 3 through the insertion hole 34, the circuit board 31 can be electrically connected with the hollow conductive tube 1 through the conductive elastic sheet 35 after the hollow conductive tube 1 is inserted into the plastic handle 3 through the insertion hole 34, the dismounting structure is simple and easy to implement, and the electric cutting and electric coagulation effects of the tool bit 4 can be realized. And can take out hollow contact tube 1 from plastic handle 3 in the postoperative to conveniently carry out the immersion fluid disinfection to hollow contact tube 1, need not plastic handle 3 and disinfect along with the immersion fluid, be favorable to prolonging the life of plastic handle 3 and inside subassembly, and plastic handle 3 is located extracorporeally all the time when in the art, and the disinfection to it only needs outside to wipe the disinfection can, therefore this scheme can make cutterbar used repeatedly, greatly reduced patient's operation cost.

The plastic handle 3 is provided with a plurality of locking sheets 36 which can be abutted against the outer side wall of the hollow conductive tube 1 and extend outwards from the end part of the plug hole 34, the locking sheets 36 and the plastic handle 3 are integrally arranged, the length direction of the locking sheets 36 is consistent with the length direction of the plug hole 34, the locking sheets 36 are arranged in a plurality, each locking sheet 36 is arranged in an annular structure surrounded at the end part of the plug hole 34, the plug hole 34 and each locking sheet 36 are coaxially arranged in the annular structure surrounded, deformation gaps are reserved between adjacent locking sheets 36, the plastic handle 3 is screwed with a locking cap 37 for shrinking each locking sheet 36 at the end part of the plug hole 34, the locking cap 37 comprises a connecting ring 371 used for being screwed with the plastic handle 3 and a locking ring 372 used for shrinking each locking sheet 36, the connecting ring 371 and the locking ring 372 are coaxially arranged, and the inner wall of the locking ring 372 is arranged in a, the inner diameter of the locking ring 372 towards one end of the connecting ring 371 is larger than that of the other end, and the locking sheets 36 are gradually folded under the pushing action of the inner wall of the locking ring 372 in the process of screwing the locking cap 37 and the plastic handle 3 until the locking sheets 36 are clamped on the outer side wall of the hollow conductive tube 1. When the locking cap 37 is screwed with the plastic handle 3, the connecting ring 371 can drive the locking ring 372 to move towards the locking sheets 36 until the inner side wall of the locking ring 372 abuts against the outer side wall of each locking sheet 36, and along with the continuous screwing of the connecting ring 371, the locking ring 372 can enable each locking sheet 36 to gather together and clamp on the outer side wall of the hollow conductive tube 1, so that the plastic handle 3 is fixedly connected with the hollow conductive tube 1, and the plastic handle 3 is prevented from sliding with the hollow conductive tube 1 in the operation. The scheme can realize the fixed connection of the plastic handle 3 and the hollow conductive tube 1, and can also enable the aperture of the insertion hole 34 to be slightly larger than the pipe diameter of the hollow conductive tube 1, thereby facilitating the insertion of the hollow conductive tube 1.

The two sections of the insulating tubes 2 are respectively positioned at two ends of the hollow conductive tube 1, and the hollow conductive tube 1 exposed between the two insulating tubes 2 is positioned in the plastic handle 3; the insulating tube 2 is arranged to avoid the contact between the electrified hollow conductive tube 1 and a human body, and the hollow conductive tube 1 exposed between the two insulating tubes 2 is positioned in the plastic handle 3 and can be used for being electrically connected with the conductive elastic piece 35, so that the design structure is ingenious and practical. Wherein keep away from on 2 lateral walls of insulating tube of hollow conductive tube 1 and be provided with the insulating tube of tool bit 4 one end around being provided with anticreep ring 21, anticreep ring 21 is provided with a plurality ofly to each anticreep ring 21 arranges the setting along 2 length direction of insulating tube, and anticreep ring 21 sets up to the conical structure, and anticreep ring 21 is greater than the external diameter size of keeping away from tool bit 4 one end towards the external diameter size of tool bit 4 one end. The one end that tool bit 4 was kept away from to hollow conductive tube 1 is used for connecting the negative pressure device, can absorb the poisonous smog that the electricity congeals and produce at any time, alleviates operating room air pollution, is favorable to operation staff's healthy, and the setting of anticreep ring 21 can be favorable to improving the firm degree that hollow conductive tube 1 and negative pressure device are connected, effectively avoids the suction tube of negative pressure device to drop from hollow conductive tube 1.

An auxiliary negative pressure port 11 is formed in the side wall of one end, close to the tool bit 4, of the hollow conductive tube 1, the auxiliary negative pressure port 11 and the tool bit 4 are located on the same side of the hollow conductive tube 1, a sealing cover 12 capable of covering the auxiliary negative pressure port 11 is hinged in the auxiliary negative pressure port 11, one side, close to the tool bit 4, of the sealing cover 12 is hinged with the hollow conductive tube 1, and the auxiliary negative pressure port 11 is matched with the sealing cover 12 and the cross section of the hollow conductive tube 1 in size; the hinged shaft of closing cap 12 and hollow electric conduction pipe 1 is fixedly connected with steel wire flexible axle 13, and the steel wire flexible axle 13 other end runs through hollow electric conduction pipe 1 lateral wall and outwards extends from plastic handle 3. Wherein articulated shaft and closing cap 12 fixed connection to the articulated shaft is connected with the axial rotation of hollow contact tube 1, can drive the articulated shaft at the flexible steel wire axle 13 rotation in-process and rotate, simultaneously also can rotate thereupon with articulated shaft fixed connection's closing cap 12, can cover vice negative pressure mouth 11 in the rotation in-process when closing cap 12, also can cover hollow contact tube 1 near tool bit 4 one end. When the cutter is used for electrocoagulation, the sealing cover 12 can cover the auxiliary negative pressure port 11, toxic smoke generated by electrocoagulation can be sucked away by the negative pressure device from the end part of the hollow conductive tube 1 close to the cutter head 4, and at the moment, the end part of the hollow conductive tube 1 close to the cutter head 4 is closest to the cutter head 4, so that the toxic smoke generated by electrocoagulation can be sucked away in time, and the definition of the operation visual field of a doctor can be improved; when the cutter is used for electric cutting, the end part of the hollow conductive tube 1 close to the cutter head 4 can be covered by the sealing cover 12, the adsorption force generated by the negative pressure device is formed from the auxiliary negative pressure port 11, medical staff can be sucked into the hollow conductive tube 1 only by moving the auxiliary negative pressure port 11 to the electrically cut tumor block, and then the tumor block is sucked away by the negative pressure device without overturning the hollow conductive tube 1, so that the tumor block is sucked away from the end part of the hollow conductive tube 1, the auxiliary negative pressure port 11 is arranged to facilitate the sucking operation of the tumor block, and the operation efficiency is improved.

Offer the scarf joint groove that is used for supplying steel wire flexible axle 13 embedding on the lateral wall of hollow contact tube 1, the scarf joint groove is around locating on the lateral wall of hollow contact tube 1 to one end switches on to closing cap 12 and the articulated shaft department of hollow contact tube 1, and the other end switches on to between two sections insulating tube 2 in the plastics handle 3, and insulating tube 2 of cladding on the lateral wall of hollow contact tube 1 covers the opening in scarf joint groove. The groove width size of scarf joint groove and the external diameter looks adaptation of flexible steel wire axle 13 make things convenient for flexible steel wire axle 13 at the scarf joint inslot rotation, insulating tube 2 covers the scarf joint groove simultaneously, can effectively avoid flexible steel wire axle 13 to break away from the scarf joint inslot, and this project organization is ingenious, can enough make insulating tube 2 produce this some insulating effect of itself, also can make flexible steel wire axle 13 settled in the scarf joint inslot simultaneously. Insulating tube 2 is provided with the breach in vice negative pressure mouth 11 departments, avoids insulating tube 2 to cover vice negative pressure mouth 11, and the breach of this insulating tube 2 should extend to vice negative pressure mouth 11 edges simultaneously, makes flexible steel wire axle 13 can effectively be covered.

The scarf joint groove is used for being passed through by flexible steel wire axle 13 on the lateral wall of hollow contact tube 1, compares in flexible steel wire axle 13 and passes the through-hole of hollow contact tube 1 lateral wall thickness's implementation and implements more easily to the latter implementation must increase the wall thickness size of hollow contact tube 1, is unfavorable for inserting it in the art in the patient.

The sealing cover 12 is made of silica gel which is an insulating material, and even if the insulating tube 2 is provided with a notch at the auxiliary negative pressure port 11, the sealing cover 12 cannot be electrified.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. The utility model provides an electricity congeals cutterbar, including hollow conductive tube (1), with insulating tube (2) of cover on hollow conductive tube (1), and plastics handle (3) that are located hollow conductive tube (1) one end and tool bit (4) that are located hollow conductive tube (1) the other end, characterized by: the cutter head (4) is in a sheet structure and is positioned on one side of the end face of the hollow conductive tube (1) and is integrally arranged with the hollow conductive tube (1), the cutter head (4) in the sheet structure is bent into an arc structure along the radial section of the hollow conductive tube (1), and the two sides of the width of the cutter head (4) are bent towards the longitudinal axis of the hollow conductive tube (1); the cutter head (4) with a sheet structure is also bent into an arc-shaped structure along the axial section of the hollow conductive tube (1), one side of the length of the cutter head (4) is connected with the hollow conductive tube (1), and the other side of the length of the cutter head is bent towards the longitudinal axis of the hollow conductive tube (1);

the cutting head (4) comprises a main cutting edge (41) positioned at the end part of the cutting head (4) and auxiliary cutting edges (42) positioned at two sides of the width of the cutting head (4), the two auxiliary cutting edges (42) are connected with two opposite sides of the main cutting edge (41), the main cutting edge (41) is outwards protruded to form an arc-shaped structure, the auxiliary cutting edges (42) are inwards recessed to form an arc-shaped structure, the distance between the two auxiliary cutting edges (42) at the concave part is smaller than the width of the rest part of the cutting head (4), and the width of the cutting head (4) is not larger than the outer diameter of the hollow conductive tube (1);

the electric coagulation connector is characterized in that a circuit board (31) is arranged in the plastic handle (3), the electric coagulation connector further comprises a first switch (32) arranged on the plastic handle (3) and used for connecting the electric coagulation function of the circuit board (31), and a second switch (33) arranged on the plastic handle (3) and used for connecting the electric coagulation function of the circuit board (31), the plastic handle (3) is further provided with a plug hole (34) for inserting the hollow conductive tube (1), the plug hole (34) penetrates through two opposite ends of the plastic handle (3), the circuit board (31) is obliquely provided with a conductive elastic sheet (35) used for electrically connecting the circuit board (31) and the hollow conductive tube (1), one end of the conductive elastic sheet (35) is fixedly connected with the circuit board (31), the other end of the conductive elastic sheet obliquely extends into the plug hole (34), the hollow conductive tube (1) is inserted from one end of the plug hole (34) and penetrates out from the other end of the plug hole (34), and then the conductive elastic sheet (35) can be connected The outer side wall is abutted;

the two sections of the insulating tubes (2) are respectively positioned at two ends of the hollow conductive tube (1), and the hollow conductive tube (1) exposed between the two insulating tubes (2) is positioned in the plastic handle (3); the outer side wall of the insulating tube (2) far away from one end, provided with the cutter head (4), of the hollow conductive tube (1) is provided with a plurality of anti-drop rings (21) in a surrounding mode, the anti-drop rings (21) are arranged in a row mode along the length direction of the insulating tube (2), the anti-drop rings (21) are arranged in a tapered structure, and the outer diameter size of one end, facing the cutter head (4), of each anti-drop ring (21) is larger than that of one end, far away from the cutter head (4);

an auxiliary negative pressure port (11) is formed in the side wall of one end, close to the tool bit (4), of the hollow conductive tube (1), the auxiliary negative pressure port (11) and the tool bit (4) are located on the same side of the hollow conductive tube (1), a sealing cover (12) capable of covering the auxiliary negative pressure port (11) is hinged in the auxiliary negative pressure port (11), one side, close to the tool bit (4), of the sealing cover (12) is hinged to the hollow conductive tube (1), and the auxiliary negative pressure port (11), the sealing cover (12) and the cross section of the hollow conductive tube (1) are matched in size; the hinged shaft fixedly connected with steel wire flexible axle (13) of closing cap (12) and hollow contact tube (1), the steel wire flexible axle (13) other end runs through hollow contact tube (1) lateral wall and outwards extends from plastics handle (3).

2. An electrocoagulation cutter according to claim 1, wherein: the plastic handle (3) is provided with locking sheets (36) which can be abutted against the outer side wall of the hollow conductive tube (1) in a mode of extending outwards from the end part of the insertion hole (34), the locking sheets (36) and the plastic handle (3) are integrally arranged, the length direction of the locking sheets (36) is consistent with the length direction of the insertion hole (34), a plurality of locking sheets (36) are arranged, each locking sheet (36) is arranged at the end part of the insertion hole (34) in a surrounding mode in an annular structure, the insertion hole (34) and each locking sheet (36) are coaxially arranged in a surrounding mode in an annular structure, deformation gaps are reserved between the adjacent locking sheets (36), a locking cap (37) used for contracting each locking sheet (36) is connected to the end part of the insertion hole (34) of the plastic handle (3) in a threaded mode, each locking cap (37) comprises a connecting ring (371) used for being in threaded connection with the plastic handle (3) and a locking ring (372) used for contracting each locking sheet (36), the connecting ring (371) and the locking ring (372) are coaxially arranged, the inner wall of the locking ring (372) is in a tapered structure, the inner diameter of the locking ring (372) towards one end of the connecting ring (371) is larger than that of the other end, and the locking pieces (36) are gradually drawn together under the pushing action of the inner wall of the locking ring (372) in the screwing process of the locking cap (37) and the plastic handle (3) until all the locking pieces (36) are clamped on the outer side wall of the hollow conductive pipe (1).

3. An electrocoagulation cutter according to claim 1, wherein: offer the scarf joint groove that is used for supplying steel wire flexible axle (13) embedding on the lateral wall of hollow conductive tube (1), the scarf joint groove is around locating on the lateral wall of hollow conductive tube (1) to one end switches on to the articulated shaft department of closing cap (12) and hollow conductive tube (1), and the other end switches on to between two sections insulating tube (2) in plastic handle (3), and insulating tube (2) of cladding on hollow conductive tube (1) lateral wall cover the opening in scarf joint groove.

4. An electrocoagulation cutter according to claim 1, wherein: the cover (12) is made of silicone.