CN115137477A - Rotatable scalpel and assembling method thereof - Google Patents

Abstract

The invention provides a rotatable scalpel, comprising: a tool bit assembly and a scalpel handle; a rotating component used for enabling the cutter head component to rotate relative to the scalpel handle is arranged between the cutter head component and the scalpel handle; the rotating assembly comprises a connecting pipe, a rotating nut and a limiting ring; one end of the connecting pipe is fixedly connected with the cutter head assembly, and the other end of the connecting pipe is detachably arranged on the scalpel handle; the rotary nut is fixed on the connecting pipe, the limiting ring is sleeved on the connecting pipe and is fixedly connected in the scalpel handle, and the rotary nut and the limiting ring are matched to limit the rotating angle of the scalpel head assembly. The rotatable scalpel disclosed by the invention is simple in overall structure and low in cost, and the angle of the scalpel head can be adjusted according to needs, so that the scalpel can be conveniently cut from different angles, the working difficulty of medical staff is reduced, and the safety and operability of surgery are improved.

Description

Rotatable scalpel and assembling method thereof

Technical Field

The invention relates to the technical field of medical instruments, in particular to a rotatable scalpel and an assembling method thereof.

Background

Human tissue separation, cutting and hemostasis are permanent subjects in surgical procedures, and radio frequency electric knives, microwave scalpels and the like are widely adopted in surgical procedures due to the unique functions of the radio frequency electric knives, the microwave scalpels and the like.

However, since the cutting angles of the treatment parts are different, the cutting angle of the scalpel head cannot be adjusted when the scalpel is used, and the scalpel holding angle can be adjusted only by the clinical experience of the medical staff, which increases the great difficulty of the medical staff.

In view of the above, the present invention is particularly proposed.

Disclosure of Invention

The first purpose of the invention is to provide a rotatable scalpel, which has a simple overall structure and low cost, and the angle of the scalpel head can be adjusted according to needs, so that the scalpel can cut from different angles conveniently, the working difficulty of medical staff is reduced, and the safety and operability of the operation are improved.

A second object of the present invention is to provide a method for assembling the above-mentioned rotatable scalpel, which is simple to operate and has high assembly efficiency.

In order to achieve the above purpose of the present invention, the following technical solutions are adopted:

the invention provides a rotatable scalpel, comprising: a tool bit assembly and a scalpel handle; a rotating component for enabling the cutter head component to rotate relative to the scalpel handle is arranged between the cutter head component and the scalpel handle;

the rotating assembly comprises a connecting pipe, a rotating nut and a limiting ring; one end of the connecting pipe is fixedly connected with the cutter head assembly, and the other end of the connecting pipe is detachably arranged on the scalpel handle; the rotary nut is fixed on the connecting pipe, the limiting ring is sleeved on the connecting pipe and is fixedly connected in the scalpel handle, and the rotary nut and the limiting ring are matched to limit the rotating angle of the scalpel head assembly.

In clinical operation, because the cutting angles of treatment parts are different, the cutter head parts of the existing microwave scalpel, the radio-frequency electrotome and the like are fixed, and medical staff can only adjust the cutter holding angle to enable the cutter head to be matched with the cutting angle, so that the mode has high dependence on clinical experience of the medical staff, and great working difficulty is increased for the medical staff. The invention aims to solve the problem and provides the rotatable scalpel, and the scalpel can adjust the angle of a scalpel head according to the requirement, so that the scalpel can cut from different angles conveniently, the working difficulty of medical staff is reduced, and the safety and operability of the operation are improved.

Preferably, the inside edge of swivel nut is kept away from tool bit subassembly direction has set gradually fixed orifices, spacing hole and mounting hole, spacing downthehole stopper that is provided with, the spacing ring is close to swivel nut's one end is provided with the fixture block, the fixture block is located spacing downthehole and work as the fixture block with when the stopper contacts, tool bit subassembly stops rotatoryly. The arrangement can prevent the inner assembly from being influenced by too many rotating turns of the cutter head assembly.

Preferably, one end of the connecting pipe, which is positioned in the scalpel handle, is sleeved with a damping ring, and the damping ring is fixedly connected with the scalpel handle. Set up the damping ring and can rely on its damping force to realize that the multi-angle is hovered, and can prevent to produce autogyration at the during operation, improve whole reliability and security.

Preferably, a fixing groove is formed in the scalpel handle, and the damping ring is located in the fixing groove. The arrangement is convenient for integral installation and positioning.

Preferably, the tool bit assembly comprises a tool bit outer conductor, a tool bit inner conductor and a tool bit PTFE, an arc-shaped notch is formed in the outer end of the tool bit outer conductor, and an upper outer electrode and a lower outer electrode are respectively arranged at two ends of the arc-shaped notch; the tool bit inner conductor with the tool bit tetrafluoro is all fixed inside the tool bit outer conductor, just the tool bit tetrafluoro is located the tool bit inner conductor with between the tool bit outer conductor.

Preferably, a coaxial cable is arranged in the connecting pipe, one end of the coaxial cable penetrates through the scalpel handle to be connected with a BNC connector assembly, and the other end of the coaxial cable is connected with the inner conductor of the scalpel head.

Preferably, the BNC connector assembly comprises a BNC outer conductor, a BNC inner conductor, a tetrafluoro gasket and a connection ring; the inner conductor of the coaxial cable is connected with the BNC inner conductor, the connecting ring is sleeved on the coaxial cable, the PTFE gasket is sleeved on the inner conductor of the coaxial cable, the BNC outer conductor is sleeved outside the BNC inner conductor, and the end part of the BNC outer conductor is connected with the connecting ring.

Preferably, a water dropping needle tube is arranged in the connecting tube, one end of the water dropping needle tube is communicated with a water outlet hole in the tetrafluoro of the scalpel head, and the other end of the water dropping needle tube penetrates out of the side wall of the scalpel handle. The water outlet structure formed by the water dripping needle tube and the water outlet hole is more suitable for dripping and flushing and is not easy to block.

Preferably, the joint of the coaxial cable and the inner conductor of the tool bit is provided with C-shaped tetrafluoro, one side of the C-shaped tetrafluoro is provided with a copper ring, and the copper ring is provided with a water chute.

Preferably, a button is arranged on the scalpel handle, a control line is arranged in the scalpel handle, and the button is connected with the control line to control the scalpel head assembly.

The invention also provides an assembly method of the rotatable scalpel, which comprises the following steps:

assembling the cutter head assembly;

assembling the rotating assembly and mounting the cutter head assembly on the rotating assembly;

mounting the rotating assembly on the scalpel handle.

Preferably, the specific steps for assembling the cutter head assembly are as follows:

mounting the tool bit inner conductor on the tool bit tetrafluoro;

one end of the coaxial cable is fixedly connected with the tail end of the inner conductor of the cutter head;

installing the C-shaped polytetrafluoroethylene at the connection position of the coaxial cable and the inner conductor of the tool bit;

installing the cutter head outer conductor;

and mounting the copper ring at one end of the coaxial cable connected with the inner conductor of the cutter head.

Preferably, before the coaxial cable is connected with the inner conductor of the cutter head, two ends of the coaxial cable are peeled, so that the inner conductors at the two ends are exposed.

Preferably, the specific steps of assembling the rotating assembly and mounting the cutter head assembly on the rotating assembly are as follows:

sleeving the rotating nut, the limiting ring and the damping ring on the connecting pipe in sequence;

penetrating a weep needle tube through one end far away from the tool bit assembly, and inserting the weep needle tube into a water outlet hole of the tetrafluoro of the tool bit through a water chute of the copper ring;

and inserting the tail end of the outer conductor of the cutter head into the connecting pipe.

Preferably, the specific steps of mounting the rotating assembly on the scalpel handle are as follows:

fixing a damping ring and a limiting ring in a scalpel handle, and clamping the dripping needle tube into a clamping groove in the scalpel handle;

and a control line and a key are arranged in the scalpel handle.

Preferably, after the rotating assembly is mounted on the scalpel handle, the rotating nut is fixedly connected with the connecting pipe.

Preferably, after the cutter head assembly is mounted on the rotating assembly, the BNC connector assembly is connected to a coaxial cable by the following specific steps:

sleeving the connecting ring on the coaxial cable;

sleeving the tetrafluoro gasket on the inner conductor of the coaxial cable;

fixedly connecting the coaxial cable inner conductor with the BNC inner conductor, and then inserting the coaxial cable inner conductor into the BNC outer conductor;

and fixedly connecting the BNC outer conductor, the connecting ring and the coaxial cable.

Compared with the prior art, the invention has the beneficial effects that:

(1) The rotatable scalpel is fixedly connected with the connecting pipe through the rotary nut, and the angle of the scalpel head can be adjusted according to needs, so that the scalpel can be conveniently cut from different angles;

(2) The limiting ring matched with the rotating nut is arranged, so that the distortion damage of the inner coaxial cable and the weeping needle tube caused by the fact that the cutter head assembly rotates for multiple circles along one direction can be prevented, and the overall reliability is improved;

(3) Can rely on its damping force to realize the multi-angle through setting up the damping ring and hover, and can prevent to produce autogyration at the during operation, improve whole reliability and security.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

FIG. 1 is a schematic view of the internal structure of a rotatable scalpel according to an embodiment of the present invention;

FIG. 2 is an exploded view of a rotatable scalpel provided in accordance with an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion A of FIG. 1;

FIG. 4 is a partially enlarged view of portion B of FIG. 1;

FIG. 5 is an enlarged view of a portion C of FIG. 1;

FIG. 6 is a schematic view of the connection between the spin nut and the stop according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a spin nut according to an embodiment of the present invention;

FIG. 8 is a cross-sectional schematic view of a spin nut provided in accordance with an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a stopper according to an embodiment of the present invention;

FIG. 10 is a schematic view of a cutter head assembly provided by an embodiment of the invention;

fig. 11 is a schematic structural diagram of a damping ring according to an embodiment of the present invention.

Wherein:

。

Detailed Description

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and the detailed description, but those skilled in the art will understand that the following described embodiments are a part of the embodiments of the present invention, rather than all of the embodiments, and are only used for illustrating the present invention, and should not be construed as limiting the scope of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

In order to more clearly explain the technical solution of the present invention, the following description is made in the form of specific embodiments.

Examples

Referring to fig. 1-11, in one aspect, the present embodiment provides a rotatable scalpel comprising: a blade assembly and scalpel handle 12; a rotating component for rotating the cutter head component relative to the scalpel handle 12 is arranged between the cutter head component and the scalpel handle 12;

wherein, the rotating component comprises a connectingpipe 8, arotating nut 9 and a limitingring 10; one end of the connectingpipe 8 is fixedly connected with the cutter head component, and the other end is detachably arranged on the scalpel handle 12; therotary nut 9 is fixed on the connectingpipe 8, the limitingring 10 is sleeved on the connectingpipe 8 and is fixedly connected in the scalpel handle 12, and therotary nut 9 is matched with the limitingring 10 to limit the rotating angle of the scalpel head assembly. Theconnection tube 8 may alternatively be a stainless steel tube.

The knife head parts of the existing microwave scalpel, the radio frequency electrotome and the like are fixed, and in clinical operation, medical staff can only make the knife head coincide with the cutting angle by adjusting the knife holding angle due to the difference of the cutting angle of a treatment part, so that the mode has high dependence on the clinical experience of the medical staff, and great working difficulty is increased for the medical staff. The embodiment provides a rotatable scalpel, and this scalpel can adjust the tool bit angle as required to be convenient for follow different angles and cut, reduced medical staff's the work degree of difficulty, increased the security and the maneuverability of operation.

The connectingpipe 8 that this embodiment is fixed mutually through will with the tool bit subassembly is demountable installation on scalpel handle 12 to set up aswivel nut 9 on connectingpipe 8 and drive connectingpipe 8 and the tool bit subassembly that links firmly on, make its rotatory arbitrary angle, can follow arbitrary angle and cut, thereby solved foretell technical problem.

In order to prevent the damage of the inner wire caused by the rotation of the cutter head assembly for multiple turns in the same direction, the present embodiment provides a limitingring 10 to form an angle limiting structure with therotating nut 9. The specific structure is shown in fig. 6-9: a fixinghole 901, a limitinghole 902 and a mountinghole 903 are sequentially arranged in therotating nut 9 along the direction far away from the cutter head assembly, the fixinghole 901 is matched with the connectingpipe 8 in size and is used for being fixedly connected with the connectingpipe 8, and the mountinghole 903 is matched with the end part of the scalpel handle 12 in shape, so that the overall attractiveness can be improved; a limitingblock 904 is arranged in the limitinghole 902, aclamping block 1001 is arranged at one end of the limitingring 10 close to therotating nut 9, theclamping block 1001 is located in the limitinghole 902, and when theclamping block 1001 contacts with the limitingblock 904, the cutter head assembly stops rotating. When thefixture block 1001 contacts the limitingblock 904, the cutter head assembly cannot rotate continuously along the direction, so that the limiting effect and the protection effect on structures such as internal wires are achieved. The limiting can be realized only by one limitingring 10 and onerotating nut 9, the whole structure is simple, and the cost is low.

As shown in fig. 5, a dampingring 11 is sleeved at one end of the connectingpipe 8 located in the scalpel handle 12, and the dampingring 11 is fixedly connected with the scalpel handle 12. In addition, a fixinggroove 1201 is further provided in the scalpel handle 12, and the dampingring 11 is positioned in the fixinggroove 1201. During actual operation, can rely on the resistance between connectingpipe 8 and dampingring 11 to realize that the multi-angle is hovered, and can prevent that the tool bit subassembly from producing autogyration when the operation, improve whole reliability and security.

As shown in fig. 4, the tool bit assembly comprises a tool bit outer conductor 1, a tool bitinner conductor 2 and atool bit tetrafluoro 3, an arc-shaped cut is formed in the outer end of the tool bit outer conductor 1, and an upper outer electrode and a lower outer electrode are respectively arranged at two ends of the arc-shaped cut; tool bitinner conductor 2 and tool bit tetrafluoro 3 are all fixed inside tool bit outer conductor 1, andtool bit tetrafluoro 3 is located between tool bitinner conductor 2 and tool bit outer conductor 1.

In this embodiment, acoaxial cable 7 is disposed in theconnection tube 8, one end of thecoaxial cable 7 penetrates through the scalpel handle 12 to connect with the BNC connector assembly, and the other end is connected with theinner conductor 2 of the scalpel head.

Wherein, the joint of thecoaxial cable 7 and theinner conductor 2 of the tool bit is provided with acopper ring 5 at one side of the C-shapedtetrafluoro 4,C-shapedtetrafluoro 4, thecopper ring 5 is sleeved on thecoaxial cable 7, and thecopper ring 5 is provided with awater chute 501. In practical application, the inner conductor of thecoaxial cable 7 is connected with theinner conductor 2 of the tool bit through welding, the C-shapedtetrafluoro 4 is arranged at the welding position, the gap of the welding position is completely supplemented, thecopper ring 5 can play a role in strengthening and fixing when the outer conductor 1 of the tool bit is connected with thecoaxial cable 7, and the structural strength of the connecting position is improved.

The BNC connector assembly comprises a BNCouter conductor 18, a BNCinner conductor 17, aPTFE gasket 16 and a connectingring 15; the inner conductor of thecoaxial cable 7 is connected with the BNCinner conductor 17, the connectingring 15 is sleeved on thecoaxial cable 7, thePTFE gasket 16 is sleeved on the inner conductor of thecoaxial cable 7, the BNCouter conductor 18 is sleeved outside the BNCinner conductor 17, and the end part of the BNC outer conductor is connected with the connectingring 15.

A water droppingneedle tube 6 is also arranged in the connectingtube 8, one end of the water droppingneedle tube 6 is communicated with awater outlet hole 301 on thetetrafluoro 3 of the scalpel head, and the other end penetrates out from the side wall of the scalpel handle 12. In specific application, the water outlet structure consisting of the water drippingneedle tube 6 and thewater outlet hole 301 is more suitable for dripping and flushing and is not easy to block. The drippingneedle tube 6 can be fixed through the C-shapedtetrafluoro 4 and thewater chute 501 on thecopper ring 5, in addition, the front end of the drippingneedle tube 6 is not tightened, a certain margin is reserved, and therefore the enough rotation angle of the cutter head assembly during rotation can be guaranteed.

As shown in fig. 2, the scalpel handle 12 is formed by two half shells, which are a left handle and a right handle, and the two half shells can be fixed to each other by bolts, can also be fixed to each other by internal buckles, and can also be fixed to each other by internal insertion rods and insertion holes. At least one of the two half shells is internally provided with a clamping groove for fixing the drippingneedle tube 6, and the side wall of the half shell is provided with a through hole for the drippingneedle tube 6 to penetrate out. The scalpel handle 12 is further provided with a key 13, acontrol wire 14 is arranged in the scalpel handle 12, and the key 13 is connected with thecontrol wire 14 to control the cutter head assembly.

In another aspect, the present embodiment provides an assembly method of the above-mentioned rotatable scalpel, including the following steps:

first, both ends of thecoaxial cable 7 are peeled off to expose the inner conductors at both ends. The assembly is then completed by assembling the cutting head assembly and the rotating assembly, mounting the cutting head assembly on the rotating assembly, and finally mounting the rotating assembly on the scalpel handle 12.

The assembly method is explained in detail below:

the assembly of the cutter head assembly comprises the following steps:

before assembly, the tetrafluoro and the inner conductor at two ends of thecoaxial cable 7 are peeled off according to the processing size, the tool bitinner conductor 2 is installed on thetool bit tetrafluoro 3, and the left end of thecoaxial cable 7 and the tail end of the tool bitinner conductor 2 are fixed by welding; c-shapedpolytetrafluoroethylene 4 is arranged at the welding position of thecoaxial cable 7 and theinner conductor 2 of the tool bit, so that the gap is completely supplemented; installing a cutter head outer conductor 1; and acopper ring 5 is arranged at one end of thecoaxial cable 7 connected with theinner conductor 2 of the tool bit according to the hole position and thewater outlet hole 301 of thetool bit PTFE 3 of the copper ring.

After the cutter head assembly is assembled, therotating nut 9, the limitingring 10 and the dampingring 11 are sequentially sleeved on the connectingpipe 8; the drippingneedle tube 6 is inserted into awater outlet hole 301 of thetool bit tetrafluoro 3 through one end which is not reamed (namely one end which is used for being connected with the scalpel handle 12) and awater guiding groove 501 of acopper ring 5; checking and installing in place (the exposed part is less than or equal to 1mm, and the surface is smooth by hand touch); the outer conductor 1 of the tool bit, thecopper ring 5, the drippingneedle tube 6 and thecoaxial cable 7 are welded and fixed, and the smooth and flat welding surface is ensured to be free of burrs during welding. After welding, uniformly coating AB glue on the tail end of the outer conductor 1 of the tool bit, sleeving the connectingpipe 8, and drying and curing;

then, the BNC connector assembly is connected to thecoaxial cable 7, specifically including the steps of: the connectingring 15 is sleeved on thecoaxial cable 7; sleeving thetetrafluoro gasket 16 on the inner conductor of thecoaxial cable 7; the inner conductor of thecoaxial cable 7 is fixedly connected with the BNCinner conductor 17 by welding, inserted into the BNCouter conductor 18, and the BNCouter conductor 18, the connectingring 15 and thecoaxial cable 7 are fixedly welded.

Next, the rotating assembly is mounted on the scalpel handle 12, and the mounting steps are as follows: coating AB glue on the outer walls of the dampingring 11 and the limitingring 10, bonding and fixing the damping ring and the left handle, clamping the weepingneedle tube 6 into a clamping groove in the scalpel handle 12, and installing thecontrol wire 14 and thebutton 13 in the scalpel handle 12 through the AB glue, wherein thecontrol wire 14 needs to be clamped into a wire clamping groove in the scalpel handle 12; after the installation is finished, the right handle is buckled on the left handle, and the right handle is ultrasonically welded, dried and solidified.

In this step, it is necessary to pay attention to the amount of rotation reserved at the front end of thedrip needle tube 6 to prevent the insufficient angle of the amount of rotation; in addition, when the limitingring 10 is fixed, the fixture blocks 1001 are required to be adhered to the lower welding line of the handle, and the cutter head assembly is required to be placed at the optimal use position.

After the rotating assembly is installed on the scalpel handle 12, therotating nut 9 is adjusted to the optimal bonding position and angle, the inner limitingblock 904 is placed on an upper welding line of the scalpel handle 12, the left and right rotatable angles of the upper limiting block are the same, after the position is determined, a thin layer of AB glue is coated on the corresponding position of the connectingpipe 8, therotating nut 9 is bonded, and drying and curing are carried out. The whole assembly of the scalpel is completed.

In a word, the rotatable scalpel is simple in overall structure and low in cost, and the angle of the scalpel head can be adjusted according to needs, so that the scalpel can cut from different angles conveniently, the working difficulty of medical staff is reduced, and the safety and operability of the operation are improved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A rotatable scalpel, comprising: a tool bit assembly and a scalpel handle; a rotating component for enabling the cutter head component to rotate relative to the scalpel handle is arranged between the cutter head component and the scalpel handle;

the rotating assembly comprises a connecting pipe, a rotating nut and a limiting ring; one end of the connecting pipe is fixedly connected with the cutter head assembly, and the other end of the connecting pipe is detachably arranged on the scalpel handle; the rotary nut is fixed on the connecting pipe, the limiting ring is sleeved on the connecting pipe and is fixedly connected in the scalpel handle, and the rotary nut is matched with the limiting ring to limit the rotating angle of the scalpel head component.

2. The rotatable scalpel of claim 1, wherein the rotating nut is provided with a fixing hole, a limiting hole and a mounting hole in sequence along a direction away from the scalpel head assembly, the limiting hole is provided with a limiting block, one end of the limiting ring close to the rotating nut is provided with a clamping block, the clamping block is located in the limiting hole, and when the clamping block contacts with the limiting block, the scalpel head assembly stops rotating.

3. The rotatable scalpel of claim 1, wherein a damping ring is sleeved on an end of the connecting tube located inside the scalpel handle, and the damping ring is fixedly connected with the scalpel handle.

4. The rotatable scalpel of claim 3, wherein a retaining groove is provided in the scalpel handle and the damping ring is positioned in the retaining groove.

5. The rotatable scalpel of claim 1, wherein the scalpel head assembly comprises a scalpel head outer conductor, a scalpel head inner conductor and a scalpel head tetrafluoride, an arc-shaped cut is formed in the outer end of the scalpel head outer conductor, and an upper outer electrode and a lower outer electrode are respectively arranged at two ends of the arc-shaped cut;

the tool bit inner conductor with the tool bit tetrafluoro is all fixed inside the tool bit outer conductor, just the tool bit tetrafluoro is located between the tool bit inner conductor and the tool bit outer conductor.

6. The rotatable scalpel of claim 5, wherein a coaxial cable is disposed in the connecting tube, one end of the coaxial cable passes through the scalpel handle and is connected with the BNC connector assembly, and the other end of the coaxial cable is connected with the inner conductor of the scalpel head.

7. The rotatable scalpel of claim 5, wherein a water dropping needle tube is arranged in the connecting tube, one end of the water dropping needle tube is communicated with the water outlet hole in the tetrafluoro of the scalpel head, and the other end of the water dropping needle tube penetrates out of the side wall of the scalpel handle.

8. The rotatable scalpel of claim 6, wherein the coaxial cable is connected with the inner conductor of the scalpel head through C-shaped PTFE, a copper ring is arranged on one side of the C-shaped PTFE, and a water guide groove is formed in the copper ring.

9. A method of assembling a rotatable surgical knife according to any of claims 1 to 8, comprising the steps of:

assembling the cutter head assembly;

assembling the rotating assembly and mounting the cutter head assembly on the rotating assembly;

mounting the rotating assembly on the scalpel handle.

10. The method of assembling of claim 9, wherein the specific steps of assembling the cutter head assembly are as follows:

mounting the tool bit inner conductor on the tool bit tetrafluoro;

one end of the coaxial cable is fixedly connected with the tail end of the inner conductor of the cutter head;

installing the C-shaped polytetrafluoroethylene at the connection position of the coaxial cable and the inner conductor of the tool bit;

installing the cutter head outer conductor;

and mounting the copper ring at one end of the coaxial cable connected with the inner conductor of the cutter head.

Images