CN203988348U - A kind of combination electric knife - Google Patents

Abstract

A combination electric knife, comprising: cutter head portion, and described cutter head portion comprises at least two or more cutter heads that can relatively move or rotate each other, described in each, cutter head connects a knife bar; Flexible pipe portion, described flexible pipe portion comprises insulation outer tube, is penetrated with the mandrel of at least one conductor material in described insulation outer tube, and one end of described mandrel is connected with the handle portion of controlling its motion, and its other end is connected with the knife bar being moved by its drive; Handle portion, described handle portion comprises handle, described handle is provided with at least one sliding handle, described sliding handle is connected with the mandrel that is driven at least one cutter head motion of control that at least one cutter head or knife bar are exposed by it or take in, and is also provided with the cable connector for being connected with high frequency energy source on described sliding handle.Advantage of the present utility model: doctor can choose suitable electric knife type, can be safely and complete fast operation technique.Patient's operation safety is guaranteed greatly, alleviate patient's misery.

Description

A kind of combination electric knife

Technical field

This utility model relates to medical instruments field, particularly a kind of combination electric knife of organizing high-frequency electrical cutting for endoscopic surgery.

Background technology

Endoscope was born over more than 50 year, had experienced the stage from medical diagnosis on disease to disease treatment, the treatment of some digestive diseases very effectively and had reliably even been become to the first-selected therapy of some and disease treatment.In recent years along with Inner mirror biopsy, EMR(Inner mirror mucosectomy), the development of ESD (decollement under Inner mirror mucosa) technology, it,, to gastral polyp and the early treatment of cancer, becomes a kind of first-selected diagnosis and treatment means just gradually.ESD(Inner mirror mucosectomy especially wherein) discovery of cancer morning, diagnosis and excision have been played to pivotal role.

But ESD operation is very loaded down with trivial details and trouble is generally consuming time very long, successfully carninomatosis change morning of a 3CM left and right of excision in about about 1 ~ 2 hour, and remove specimen and do pathological analysis.In operation, can change frequently apparatus, as the entry needle that is used for swelling for injecting normal saline, for passing to the hot biopsy forceps of high-frequency electrical heating coagulation and the hemostatic clamp that active hemorrhage is carried out to mechanical pressure hemostasis to going out diffuse hemorrhage point, cutting and the cover snare of taking and the electric knife of the most normal operating time is as needle-like cutter, IT cutter (insulation cutter head) in hands, HOOT cutter (hook-shaped cutter head), TT cutter (triangle cutter head), Flex cutter (steel wire strand cutter head), Flush(pin cutter add the function of jet water course) cutter etc.

Various electric knifes have various merits and demerits:

Pin cutter, Unexamined Patent 4-329944 discloses the cutter head structure that a kind of cutter head is needle-like, what in hospital, comparatively commonly use now is the pin cutter that Olympus company produces, its knife bar is that the front end of the stainless steel silk knife bar of 0.4mm left and right is hemispherical, stretch out the about 1 ~ 3mm different length of insulation outer tube tip lengths, its cutter head end face and knife bar all can carry out TURP to tissue and close coagulation, get labelling ready and outside gauge point, utilize cutter head end to cut in advance an openning, to facilitate, use other safe electric knifes instead and cut.Comparatively conventional is the pin cutter of OLYMPYS now.The advantage of pin cutter: cutter head and knife bar all have dissection, operation cutting is quick, shortcoming, so just because of the cutter knife bar of pin cutter and and cutter head can cut and be also in great hidden danger, be easy to patient to cause unnecessary damage, there is the complication such as perforation of wishing most, if safety operation pin cutter whole process is completed to ESD hands art, doctor is required to propose high requirement, to under the state of patient's peristalsis of the digest tract, want to control well firmly, pin cutter cut direction and the degree of depth and distance, also to just can effectively cut cutting position must be exposed under the visual field completely, so generally doctor uses while cutting in advance at the initial stage of ESD, in ESD operation process, seldom re-use.

IT cutter, discloses a kind of IT knife structure in patent CN100333698C.The IT cutter that conventional ITDao Wei OLYMPYS company of hospital produces now, its knife bar diameter 0.4mm left and right, front end connects an insulating ceramics piece, utilizes knife bar cutting, is a kind of safer cutting tool.IT cutter advantage: because its front end has the ceramic block of an insulation, can by gastral muscle layer tissue with to cut mucous layer and Submucosa and effectively intercept and open, the calcination that prevents steel edge pole pair flesh layer destroys muscle layer tissue, which moves cutter head to and can not damage muscle layer tissue, even if what in the visual field, well doctor still can safety under observation state cuts tissue, use safer.Shortcoming: because its front end cutter head is without dissection, TURP speed is slower, and operating time is longer, unfavorable to patient in stupor for a long time to client need, long ESD operation technique is to doctor and nurse obtains physical ability and patience is all very large test.The doctor who generally begins to learn ESD operation can first adopt IT cutter to carry out most operation, safer because of it.Even if the more rich doctor of some surgical experiences also can change IT cutter in good situation to perform the operation, to guarantee the safety of operation.All the other visuals field comparatively clearly situation can to use operation instead more convenient, TURP more fast cutter (as HOOK cutter) completes operation technique.

Hook cutter, what hospital was comparatively conventional now is the HOOK cutter that OLYMPUS company produces.Be a kind of by the front end metal knife bar of pin cutter noted earlier, bending 90 degree form one and become the hook-shaped cutter head of 90 degree in knife bar.High frequency generator has two wires, and one is connected to battery lead plate, and battery lead plate contacts in human skin tissue; On an other electrode contact that is connected to electric knife, its cutter head is that metal material can conduct electricity, can with by human body, form that a complete loop has the effect that tissue is heated but its contact area will all produced heats be less also just little to dissection much larger than the head end of pin cutter, but still muscle layer tissue is had to destruction.The operation of Hook cutter has comparatively obviously advantage: 1, flexible operation degree is larger, and its cutting part is also more, and knife bar and cutter head can cut; 2, in the time of can utilizing cutter head (hook) that the tissue lifting of precut is got up or provokes to prevent TURP, damage flesh layer, comparatively safe; Shortcoming: it is very careful that manipulation also needs, because cutter head has certain dissection, also need under the visual field good state lead to high frequency TURP the same as pin cutter operates, this needs constantly to adjust cutting position and constantly rinses the operation maintenances such as camera lens and can clearly observe the tissue that will cut and state and the direction of motion of cutter head by screen, the direction that also will adjust in time cutter head (hook) prevents the direction that cutter head (hook) is aimed at flesh layer or do not wanted to cut, and avoids occurring that operate miss causes damage to patient.In some spaces, narrower and small lesion locations is for excision pathological changes that can safety, and doctor may also need to be forced to withdraw from hook cutter, and change the IT cutter with insulation cutter head and carry out cutting operation, with the successful of the assurance operation of maximum limit, and patient's safety.

Summary of the invention

This utility model provide a kind of can be safer when operating and must complete complicated operation technique faster, make doctor according to the situation of disease, in the situation that not needing to replace apparatus, use the electric knife of different shape cutter heads to carry out operation technique, greatly improve the combination electric knife of operation safety and shortening operating time.

The technical solution adopted in the utility model is:

A combination electric knife, is characterized in that: comprise

Cutter head portion, described cutter head portion comprises at least two or more cutter heads that can relatively move or rotate each other, described in each, cutter head connects the knife bar of a conductor material;

Flexible pipe portion, described flexible pipe portion comprises insulation outer tube, is penetrated with the mandrel of at least one conductor material in described insulation outer tube, and one end of described mandrel is connected with the handle portion of controlling its motion, and its other end is connected with the knife bar being moved by its drive;

Handle portion, described handle portion comprises handle, described handle is provided with at least one sliding handle, described sliding handle is connected with the mandrel that is driven at least one cutter head motion of control that at least one cutter head or knife bar are exposed by it or take in, and is also provided with the cable connector for being connected with high frequency energy source on described sliding handle.

Further, described cutter head portion comprises that at least one can directly contact or change the cutter head of contact distance or contact area with bio-tissue, and described cutter head is provided with accommodation hole or the holding tank that can take at least one other cutter head.

Further, the end of at least one cutter head be provided with allow another one cutter head knife bar mutually by motion within it and can transmitting torque drive knife bar hole or the knife bar groove of the rotation of another one cutter head.

Further, the cutter head that at least one or more cutter head is insulating material, the cutter head that all the other one or more cutter heads are conductor material.

Further, the close end of the cutter head of described insulating material is provided with the conductor block to the cutter head of conductor material for conductive electric current.

Further, described flexible pipe portion front end is provided with stopper, and described cutter head portion is provided with to coordinate with stopper to relatively rotate with dynamic cutter head and rotates and by the shaft of stopper restriction cutter head transverse shifting.

Further, described cutter head portion is provided with the motion of restriction cutter head or limited amplitude and moves and prevent the long spacing catch exposing at the two ends of stopper.

Or described stopper comprises front stopper, rear stopper, between described front stopper, rear stopper, be provided with and be mated respectively restriction cutter head motion or limited amplitude and move and prevent the long spacing catch exposing.

Further, described spacing catch is arranged on the same knife bar of cutter head portion or on different knife bar.

This utility model can the combination of advantages of multiple electric knife together, form one the combination electric knife with multiple electric knife advantage.Such as IT cutter and pin cutter are combined, IT cutter and HOOK cutter combine, utilize the safety of insulation cutter head utilize the simple operation of metal cutter head simultaneously and cut advantage fast, can be safer while making to utilize this combination electric knife to operate and must complete complicated operation technique faster; Can make doctor according to the situation of disease, in the situation that not needing to replace apparatus, use the electric knife of different shape cutter heads to carry out operation technique, can greatly improve the safety of operation and shorten the time of performing the operation.Also can IT cutter, pin cutter, Hook cutter combine; IT cutter, TT cutter, Hook cutter etc. are combined, and are not only confined to above given example, mainly utilize the advantage of various electrotome heads that an electric knife can saferly be used by doctor more efficiently, for patient gets rid of disease misery.

The beneficial effects of the utility model are: the combination electric knife that utilizes this utility model to provide, doctor can be by constantly choosing suitable electric knife type according to the different conditions of the situation analysis of lesions position tissue and the suitable electric knife of judgement use to the tissue of lesions position, can be safely and complete fast operation technique.Patient's operation safety is guaranteed greatly, alleviate patient's misery; The process that has reduced doctor and nurse's the various electric knifes of frequent replacing has reduced operation deadline and labor intensity, makes doctor remove disease misery for more patient.

Accompanying drawing explanation

Fig. 1 is the first example structure schematic diagram of the present utility model.

Fig. 2 is the cutaway view that the insulation cutter head of the first embodiment of the present utility model stretches out state.

Fig. 3 is the cutaway view that the metal cutter head of the first embodiment of the present utility model stretches out state.

Fig. 4 be the first embodiment of the present utility model " " structural representation of the hook-shaped metal cutter head of font.

Fig. 5 is the structural representation of the hook-shaped metal cutter head of the first embodiment of the present utility model " L " font.

Fig. 6 is the structure cutaway view that the insulation cutter head of the second embodiment of the present utility model stretches out state.

Fig. 7 is the structural representation of the hook-shaped metal cutter head of the second embodiment of the present utility model " L " font.

Fig. 8 be the second embodiment of the present utility model " " structural representation of the hook-shaped metal cutter head of font.

Fig. 9 is the various structural representations of mandrel of the present utility model portion.

Figure 10 is the first structure cutaway view of insulation cutter head of the present utility model.

Figure 11 is the first structure side view of insulation cutter head of the present utility model.

Figure 12 is the second structure cutaway view of insulation cutter head of the present utility model.

Figure 13 is the second structure side view of insulation cutter head of the present utility model.

Figure 14 is the third structure cutaway view of insulation cutter head of the present utility model.

Figure 15 is the 4th kind of structure cutaway view of insulation cutter head of the present utility model.

Figure 16 is the structure cutaway view that the needle-like metal cutter head of the 4th embodiment of the present utility model stretches out state.

Figure 17 is a kind of structural representation of the needle-like metal cutter head of the 4th embodiment of the present utility model.

Figure 18 is the another kind of structural representation of the needle-like metal cutter head of the 4th embodiment of the present utility model.

Figure 19 is the structural representation of the 5th embodiment of the present utility model.

Figure 20 is the structure cutaway view that the hook-shaped metal cutter head of the 5th embodiment of the present utility model stretches out state.

Figure 21 is the structure cutaway view that the needle-like metal cutter head of the 5th embodiment of the present utility model stretches out state.

Figure 22 is the structure cutaway view of the mandrel portion of the 5th embodiment of the present utility model.

The specific embodiment

Below in conjunction with specific embodiment, this utility model is further described, but this utility model is not confined to these specific embodiment.One skilled in the art would recognize that this utility model contained all alternatives, improvement project and the equivalents that within the scope of claims, may comprise.

Embodiment mono-

As shown in Fig. 1 ~ 5 and Fig. 9-13, the present embodiment is combined as example with IT cutter and other cuttves.

A kind of combination electric knife is mainly comprised of handle portion 3, flexible pipe portion 2 and cutter head portion 1.

Handle portion 3 is comprised of handle 31 and a sliding handle 32, sliding handle 32 slides on handle 31, the sliding handle 32 of insulation which is provided with cable connector 33, and is connected with metal-cored axial region 4 through flexible pipe portion 2 inside can conductive electric current with push away, draw and moment of torsion.

The near-end of flexible pipe portion 2 is connected with handle portion 1, flexible pipe portion 2 can be and meets material composition, inner side is wound in the insulating barrier that tubulose outside has macromolecular material for spring, isolated electric current prevents doctor or patient to damage, the bourdon tube 22 of inner side has good holding strength, and the general good PTFE material of insulation effect that adopts of insulating barrier 21 in outside is made; Also can be but the macromolecular material of pure insulation as PTFE etc. makes, having certain intensity has and can well completely cut off electric current.

Cutter head portion 1 is respectively the high-frequency electrical cutter head combination of two kinds of functions, cutter head portion 1 combining form be a safer insulation cutter head 12 with insulator as IT cutter, be in addition can conduct electricity can fly-cutting metal cutter head 11 as billhook, pin cutter, triangular knife etc.Its combination object is that electric knife in the time of can reducing doctor's operation technique is changed number of times, the efficiency that improves ESD operation under the prerequisite of the safety complete operation as early as possible that makes to perform the operation.Metal cutter head 11 in the present embodiment is billhooks.

The cutter head 12 that insulate in the present embodiment is connected with mandrel 41, mandrel 41 is connected and can conducts electricity with the cable connector 33 on sliding handle 32, insulation cutter head 12 can be controlled its positions by sliding handle 32, when sliding handle 32 cutter head 12 that insulate when far-end pushes away also moves to far-end; When sliding handle 32 cutter head 12 that insulate when near-end pushes away also moves to near-end.

On metal cutter head 11, be connected with metal cutter head knife bar 13, metal cutter head knife bar 13 is connected with shaft 18, and the two ends of shaft 18 are provided with front limit catch 15, rear spacing catch 16, in shaft 18 outsides, are roughly cylindric, and inner side is provided with knife bar hole 17.Front limit catch 15 and rear shelves portion 16 can be and shaft 18 integrative-structures also assembling or welding, the structure that bonding, compression joint technique is connected to form.Metal cutter head knife bar 13 and shaft 18 can one also by assembling or the mode such as welding is formed by connecting, metal cutter head knife bar 13 and metal cutter head 11 be also one also by assembling or the mode such as welding is formed by connecting.Metal cutter head 11 can be the various shapes such as regular circle, square or irregular semi-circular, ellipse.Knife bar hole 17 can be also irregularly shaped as semicircle or regular shape rectangle etc. can transmitting torque, shape transmitting torque that like this can coordinated insulation cutter head knife bar 14, by turning handle portion 1, metal cutter head 11 is rotated a certain angle and meet the demand of doctor to electric knife direction of advance, also some situation as pin cutter be not need rotation, at this moment knife bar hole 17 can be just that the shape such as circular is as long as seesawing of assurance metal cutter head knife bar 13 is just passable.

Metal cutter head 11 is axially limited in flexible pipe portion 2 front ends, stopper 23 can be two compositions, after closing up, roughly become barrel-like structure that the shaft of metal cutter head 11 18 is included in wherein, front limit catch 15 and rear spacing catch 16 lay respectively at far-end and the near-end of 23 stoppers, shaft 18 is positioned in the middle of two stoppers 23, stopper 23 is fixedly connected with bourdon tube 22 respectively, and metal cutter head 11 can not move vertically, but can freely rotate around axis.Stopper 23 also can be barrel-like structure, the shaft 18 of metal cutter head 11 penetrates wherein, again front limit catch 15 or rear spacing catch 16 are connected with metal cutter head 11, form shaft 18 in the middle of stopper 23, front limit catch 15 and rear spacing catch 16 are positioned at the structure of far-end and the near-end of stopper 23.The first-selected semicircular shape in knife bar hole 17 of shaft 18 inner sides, can pass through for the insulation cutter head knife bar 14 of insulation cutter head 12, and insulation cutter head bar 14 shapes match with knife bar hole 17, first-selected semicircle knife bar cross section, and semicircle knife bar is through semicircle knife bar hole.When turning handle portion 1, moment of torsion can be delivered to insulation cutter head knife bar 14 and drive 12 rotations of insulation cutter head by mandrel 41.Because insulation cutter head knife bar 14 is for can transmitting torque structure and coordinate and drive shaft 18 to rotate around axis with knife bar hole 17 that can transmitting torque, thereby realized the rotation of metal cutter head 11.So just can realize metal cutter head 11 and change nyctitropic function.Metal cutter head knife bar 13 cross sections can semicircular in shape, insulation cutter head knife bar 14 cross sections can semicircular in shape, when insulation cutter head 12 synthetic roughly cylindrical of two semicircular knife bars while stretching out, at this moment metal cutter head knife bar 13 all exposes out with insulation cutter head knife bar 14 all has an opportunity to contact with organizing, when insulation knife bar stretch out cutter when the longest the resistance position end face 413 of mandrel 41 will contact with rear spacing catch 16.The stainless steel material that the insulation cutter head knife bar 14 of metal material and metal cutter head knife bar 13 are excellent conductive performance is made, and can pass to electric energy.High frequency generator has two cables, article one, by special-purpose interface, be connected on the cable connector 33 of handle portion 1, another one cable is connected to and shifts to an earlier date docile to the negative plate of patient body-surface, when the cutter head of metal material or knife bar are during in patient's tissue contact, doctor can step on first switch and make high frequency generator work output high frequency electric, this is that high frequency electric is passed to cutter head or the knife bar of metal by the cable connector 33 of the connection of high-frequency mode, and then be delivered in the tissue being in contact with it, and by human body and negative plate and a complete electric loop of wire formation.The position contacting with tissue at cutter head or the knife bar of metal can produce the high temperature of moment, make the change of the tissue generation character that touches, or by moment, gasified or add thermal metamorphism, this depends on the mode of operation of the selected high frequency generator of doctor at that time, is TURP or coagulation.

In clinical, by a large amount of experiments, find that the tinsel of 0.4mm diameter is comparatively suitable to the cutting speed of tissue.Preferred version is that metal cutter head knife bar 13 and insulation cutter head knife bar 14 cross sections are two semicircles, diameter is 0.4mm, and can mutually move vertically freely, because be that semicircle knife bar hole 17 coordinates with semicircular insulation cutter head knife bar 14, when rotating one, will certainly drive another one to rotate again.According to insulation cutter head knife bar 14 knife bar exposed length H2 and the H3 of the metal cutter head knife bar 13 of the metal cutter head 11 of clinical use and insulation cutter head 12, need to be configured to several length such as 1mm, 1.5mm, 2mm, 2.5mm, 3mm, H2 and H3 numerical value can identical also can be different, two groups of length values can be combined, arrange out the form of more crossing.To meet the cutting demand of doctor to different tissues.

As shown in Figure 10-13, the insulator 125 of insulation cutter head 12 is that pottery or macromolecule insulate as PTFE, PEEK material, and far-end is provided with holding tank 121, for taking in metal cutter head 11, it can be received in wherein and not expose, prevent tissue to cause unnecessary and unexpected damage; Or collector is most of, makes metal cutter head 11 distal-most end only expose a little, can carry out electric coagulation hemostasis to some hemorrhage diseases like this.The shape of holding tank 121 can be consistent with metal cutter head 11 shapes, and structure, also can be the regular shape shown in Figure 19 as shown in figure 18, just passable as long as it can hold lower metal cutter head 11.

Insulator 125 is provided with and runs through knife bar hole 123, allows another one knife bar to run through wherein.The exposed length of insulation cutter head knife bar 14 is contacted rear knife bar by insulation cutter head 12 and is exposed relative length decision by main with metal cutter head 11.The cutter head proximal end face 126 that moves to conductor block 122 when insulation cutter head 12 to near-end contacts with front limit catch 15, and conductor block 122 is connected with insulation cutter head knife bar 14 can conductive electric current.By conductor block 122, making to insulate cutter head 12 also can conductive electric current with metal cutter head 11 UNICOMs.By the cutter head distal face 124 of the cutter head 12 that insulate, the distance apart from metal cutter head 11 far-ends determines metal cutter head knife bar 13 exposed lengths.The diameter of the insulator 125 of insulation cutter head 12 is greatly between 1.5mm ~ 3mm, the preferred 2.5mm diameter of this programme, can can make again the head end of metal cutter head 11 maximum or the longest by the existing Qian of endoscope road like this, metal cutter head 11 can be the hook-shaped also also various shapes such as spherical of triangle line.

Hook-type metal cutter head 11 shown in Fig. 4 and Fig. 5 be respectively " " font and " L " shape, wherein " " length of the hook portion of font is longer, can tangle the focus that more tissues, tissue is thicker comparatively applicable; The tissue that the hook portion of " L " shape is hung can be less, and it is comparatively suitable that comparatively thin disease is organized, and can allow doctor select different hook-shaped heads to guarantee that the safety of operation can rapidity according to the thickness situation of disease position tissue.A part for the insulation cutter head knife bar 14 of insulation cutter head 12 can embed in insulator 125, and it is fixed together, or utilizes resistant to elevated temperatures glue that insulator 125 and insulation cutter head knife bar 14 are bonded together; Or by the metallization of insulator 125 is welded together insulation cutter head knife bar 14 and insulator 125 again; Or thermoplastic material and the mode that insulation cutter head knife bar 14 melts by injection moulding or heat are linked together; Or thermosets is linked together by curing mode and insulation cutter head knife bar 14.

As shown in Figure 9, the form of mandrel 41 can be the also tinsel of sub-thread of wire strands of multiply, and 41 mandrels need to possess certain moment of torsion and transmit performance, can drive 12 rotations of insulation cutter head when rotary handle portion 1.The rustless steel rope structure that in the present embodiment, 41 core shaft structures are multiply, this steel wire rope can well transmitting torque and pulling force, has again comparatively suitable resistivity.If the flexible pipe portion 2 that meets material that adopts bourdon tube 22 and polymeric dielectric layer 21 to form, can to make doctor or nurse control more flexible feel better in order to reduce the frictional resistance of mandrel 41 motions for the lubrication management 43 that need to have a thin-walled that one deck coefficient of friction is less at 41 mandrel side covers.The material of lubrication management 43 can be the materials such as PTFE, PE, nylon.

During operation technique, nurse is by promoting sliding handle 32, band moving mandrel 41 is to distal movement, mandrel 41 drives insulation cutter head 12 to distal movement, until metal cutter head 11 submerge completely insulation cutter head 12 holding tank 121 in, when stretching out the resistance position end face 413 of mandrel 41 when the longest, insulation cutter head knife bar 14 will contact with rear spacing catch 16 also stop motion, as long as nurse gives certain push-pull effort to sliding handle 32 always, the length of insulation cutter head knife bar 14 can keep a fixed value can not change.At this moment the combination cutter that this utility model provides can be made IT cutter and use, and doctor can, to some visuals field of focus tissue at unintelligible position also, carry out electricity cutting safely and effectively, as Fig. 2 by judgement.

During operation technique, nurse is by pulling sliding handle 32, band moving mandrel 41 is to near-end motion, and mandrel 41 drives insulation cutter head 12 to near-end motion, until the cutter head proximal end face 126 of insulation cutter head 12 and the front end butt of flexible pipe portion 2, at this moment metal cutter head 11 and metal cutter head knife bar 13 expose, as Fig. 3.At this moment the combination cutter that this utility model provides, according to the shape of cutter head, it can be the electric knife to tissue cutting fast such as triangular knife, billhook, pin cutter, make doctor use electric knife fast can be good in the visual field by professional judgement in the situation that, the tissue comparatively suitable to focus carries out TURP fast, to reduce operating time.

During operation technique, nurse can rotary handle portion 1, portion of band moving mandrel 4 rotates and drives 12 rotations of insulation cutter head, insulation cutter head knife bar 14 by insulation cutter head 12 coordinates with the abnormal shape in the knife bar hole 17 of the shaft 18 of metal cutter head 11, the centrage that drive metal cutter head 11 be take shaft 18 is axis rotation, can change the direction of metal cutter head 11, the situation of the tissue cutting as required in the time of can making doctor perform the operation is made timely and effectively and to be adjusted metal cutter head 11 directions, make operation technique can be safer, complete fast.

Insulation cutter head 12 near-ends are provided with the conductor block 122 of conductor material, when insulation cutter head 12 to near-end when being pulled to the end can with front limit catch 15 butts of metal cutter head 11, at this moment the cable connector 33 of sliding handle 32 is communicated with and can conducts high-frequency electrical with metal cutter head 11.High-frequency electrical generator has an even cable, and one is connected on described cable connector 33; Other one is connected in and is affixed on the external negative plate of organism.So just formed the electric loop of a sealing, when the insulation cutter head knife bar 14 of conductor material or metal cutter head 11 contact with tissue, insulation cutter head knife bar 14 and metal cutter head 11 can produce high temperature moment, the tissue of contact is carried out to transient heating and make it organize moment gasification, thereby move down dynamic cutter head in the effect of Inner mirror, tissue is separated and realized tissue cutting safely and effectively.

When insulation cutter head 12 while being pushed out distal-most end metal cutter head 11 submerge in 121 holding tanks of insulation cutter head 12, can directly not come in contact with organizing again.At this moment insulate insulation cutter head knife bar 14 and the metal cutter head knife bar 13 of cutter head 12, all can contact also and can conduct high-frequency electrical with tissue.High-frequency electrical generator is provided with two cables, and one of them is connected on described cable connector 33; Other one is connected in and is affixed on the external electrode slice of organism (in structure chart without embodying).The high frequency electric that high frequency generator sends so just can flow out to cable connector 33 from a cable, while contacting with tissue with insulation cutter head knife bar 14 by the mandrel 41 of conductor material and the metal cutter head knife bar 13 of conductor material, electric current flows through tissue and the negative plates that leads, then the cable by an other high frequency generator flows back to high frequency generator, so just formed a complete high frequency electric loop, when the metal cutter head knife bar 13 of conductor or insulation cutter head knife bar 1 disconnect in this loop during with separate tissue.When metal cutter head knife bar 13 contacts with tissue with insulation cutter head knife bar 1, contact position can produce the high temperature of moment, the tissue of contact is carried out to transient heating makes it organize moment gasification, under the drive of Inner mirror, move, metal cutter head knife bar 13 and insulation cutter head knife bar 1 just can carry out tissue effective separatedly like this, thereby realize tissue safely and effectively, cut.At this moment due to metal cutter head 11 submerge insulation cutter head 12 in tissue directly do not contact, metal cutter head 11Bu Huidui bio-tissue UNICOM conduction, can not lose the tissue of organism, even if contact also and can also can not make bio-tissue damage because of thering is certain distance with tissue with biological body fluid, so just can utilize this electric knife to judge that to some doctors the tissue at the position that the visual field is not clear cuts safely and effectively.

Embodiment bis-

As shown in Fig. 6-8, the present embodiment provides another metal cutter head 11 and insulation cutter head 12 connected modes, its main distinction is that shaft 18 outsides of metal cutter head 11 become semicircle, with after insulation cutter head knife bar 14 combination of semicircle, become roughly cylindrical, at least one face of front limit catch 15 and rear spacing catch 16 is provided with the semicircle orifice more slightly larger than edge cutter head knife bar 14, and the edge cutter head knife bar 14 of the cutter head 12 that makes to insulate can drive metal cutter head knife bar 13 to rotate while rotating.All the other 26S Proteasome Structure and Functions are all identical with embodiment mono-.

Embodiment tri-

As shown in Figure 13, Figure 14, the difference of the present embodiment and embodiment mono-be the to insulate near-end of cutter head 12 also can not be provided with 122 conductor block, and when insulation cutter head 12 stretches out, its insulation cutter head knife bar 14 can pass to electric current tissue is cut.The resistance position end face 413 of mandrel 41 can contact with rear position-limited block 16, and can electrical conduction current and cut organizing.When insulation cutter head 12 retraction, metal cutter head knife bar 13 and metal cutter head 11 expose, and can contact with tissue.Doctor can control Inner mirror metal cutter head knife bar 13 is compressed organizationally when cutting, insulate cutter head knife bar 14 again through front barrier sheet 15 and rear barrier sheet 16, the cutter head knife bar 14 that insulate under external force can contact with front barrier sheet 15 or rear barrier sheet 16, insulation cutter head knife bar 14 can conduct the current on metal cutter head knife bar 13 and metal cutter head 11, and this is that metal cutter head 11 and metal cutter head knife bar 13 just can cut tissue.All the other 26S Proteasome Structure and Functions are all identical with embodiment mono-.

Embodiment tetra-

As shown in Figure 16-18, the metal cutter head of the present embodiment is by the shape of hook, to have been become the acicular texture of straight line, and cutter head also can become shape triangular form or that other various clinicians wish certainly.All the other 26S Proteasome Structure and Functions are all identical with embodiment mono-.

Embodiment five

As shown in Figure 19-22, the difference of the present embodiment and embodiment mono-is to be equipped with two mandrels 41 in described flexible pipe portion 2.The first mandrel 411 is connected with metal cutter head 11, the second mandrel 412 with insulation cutter head 12 be connected.

Handle portion 3 in the present embodiment is comprised of handle 31, the first sliding handle 321 and the second sliding handle 322, each sliding handle can slide on handle 31, the first sliding handle 321 and the second sliding handle 322 are insulant, on it, be respectively equipped with the first cable connector 331, the second cable connector 332, be connected with the second mandrel 412 with the first mandrel 411 through flexible pipe portion 2 inside respectively, can conductive electric current.When any one of push-and-pull the first sliding handle 321 and the second sliding handle 322, there are coupled corresponding metal cutter head 11 and metal cutter head 12 to do to stretch out accordingly and regain action.Also simultaneously push-and-pull the first sliding handle 321 and the second sliding handle 322 make corresponding metal cutter head 11 and metal cutter head 12 make different assembled gestures, as the insulation cutter head knife bar 14 of insulation cutter head 12 exposes, the metal cutter head knife bar 13 of metal cutter head 11 and head expose etc.

Or only in one of them of the first sliding handle 321 and the second sliding handle 322, be provided with cable adapter 33, utilize bourdon tube 22 to come to conduct electricity to another one cutter head.

In the present embodiment, the stopper 23 of flexible pipe portion 2 front ends is comprised of front stopper 232 and rear stopper 231, insulation cutter head catch 161 is set respectively accordingly on insulation cutter head knife bar 14, steel edge first speed sheet 151 is set on metal cutter head knife bar 13, by front stopper 232 and rear stopper 231 respectively with the shift position of insulation cutter head catch 161, steel edge first speed sheet 151 engagement limits insulation cutter heads 12 and metal cutter head 11.

All the other 26S Proteasome Structure and Functions are all identical with embodiment mono-.

Claims (10)

1. a combination electric knife, is characterized in that: comprise

Cutter head portion, described cutter head portion comprises at least two or more cutter heads that can relatively move or rotate each other, described in each, cutter head connects the knife bar of a conductor material;

Flexible pipe portion, described flexible pipe portion comprises insulation outer tube, is penetrated with the mandrel of at least one conductor material in described insulation outer tube, and one end of described mandrel is connected with the handle portion of controlling its motion, and its other end is connected with the knife bar being moved by its drive;

Handle portion, described handle portion comprises handle, described handle is provided with at least one sliding handle, described sliding handle is connected with the mandrel that is driven at least one cutter head motion of control that at least one cutter head or knife bar are exposed by it or take in, and is also provided with the cable connector for being connected with high frequency energy source on described sliding handle.

2. a kind of combination electric knife according to claim 1, it is characterized in that: described cutter head portion comprises that at least one can directly contact or change the cutter head of contact distance or contact area with bio-tissue, and described cutter head is provided with accommodation hole or the holding tank that can take at least one other cutter head.

3. a kind of combination electric knife according to claim 1, is characterized in that: the end of at least one cutter head be provided with allow another one cutter head knife bar mutually by motion within it and can transmitting torque drive knife bar hole or the knife bar groove of the rotation of another one cutter head.

4. a kind of combination electric knife according to claim 1, is characterized in that: the cutter head that at least one or more cutter head is insulating material, the cutter head that all the other one or more cutter heads are conductor material.

5. a kind of combination electric knife according to claim 4, is characterized in that: the close end of the cutter head of described insulating material is provided with the conductor block to the cutter head of conductor material for conductive electric current.

6. according to a kind of combination electric knife one of claim 1 ~ 5 Suo Shu, it is characterized in that: described flexible pipe portion front end is provided with stopper, described cutter head portion is provided with to coordinate with stopper to relatively rotate with dynamic cutter head and rotates and by the shaft of stopper restriction cutter head transverse shifting.

7. a kind of combination electric knife according to claim 6, is characterized in that: described cutter head portion is provided with the motion of restriction cutter head or limited amplitude and moves and prevent the long spacing catch exposing at the two ends of stopper.

8. a kind of combination electric knife according to claim 6, it is characterized in that: described stopper comprises front stopper, rear stopper, between described front stopper, rear stopper, be provided with and be mated respectively restriction cutter head motion or limited amplitude and move and prevent the long spacing catch exposing.

9. a kind of combination electric knife according to claim 7, is characterized in that: described spacing catch is arranged on the same knife bar of cutter head portion or on different knife bar.

10. a kind of combination electric knife according to claim 8, is characterized in that: described spacing catch is arranged on the same knife bar of cutter head portion or on different knife bar.