CN209018925U - The bipolar jaw type cutting ablation knife of throat - Google Patents

Abstract

The utility model discloses a kind of bipolar jaw type cutting ablation knives of throat, including casing, operation handle, first electrode and second electrode, cannula end is fixed in operation handle, push rod is provided in casing, second electrode is fixed on casing front end, it is fixed in insulating sleeve insertion casing with casing, first electrode is connect through pin shaft with insulating sleeve, the end of the first electrode bar that is connected is connect with push rod front end, push rod end is connect with thruster is held, first electrode and second electrode form openable and closable jaw when pushing push rod forward, described sleeve pipe inner and outer wall insulate, it the be connected outside of bar and push rod insulate, the on-load voltage in first electrode or second electrode, first electrode and second electrode act on pathological tissues, in first electrode, current loop is formed between pathological tissues and second electrode.The utility model has the advantages that operation precision is high, use scope is wide.

Description

The bipolar jaw type cutting ablation knife of throat

Technical field

The utility model relates to medical instruments fields, and in particular to a kind of bipolar jaw type cutting ablation knife of throat.

Background technique

Vocal cords benign proliferative lesion includes polyp of vocal cord, vocal nodule, vocal cyst, vocal cords times gram layer oedema, vocal cords The tumors type lesion such as papilloma is to lead to the most common cause of disease of hoarse voice, clinically takes operation to control tumor type lesion more It treats.The advantages of mainstream treatment method is to use supporting laryngoscope operation removal lesion tissue under general anesthesia at present, general anesthesia menisectomy is disease Human vocal band remains static, easily operated, cooperates microscope and laser, performs the operation more accurate, the disadvantage is that general anesthesia risk is big, has A little risks can be fatal or disable, and there are also injury of teeth, the tearing of pharyngeal mucous membrane, tongue injury, lingual nerve injury, the bad palms of excision extension The risks such as hold.Case lesser for lesion extracts lesion group using laryngeal biopsy forceps using electronics (fiber) laryngoscope menisectomy It knits, this method can allow patient to pronounce immediate assessment range of operation and effect during surgery, it can get preferable therapeutic effect, Advantage is that operation can be completed under local anaesthesia, it is possible to prevente effectively from the risk of above-mentioned general anesthesia operation, the disadvantage is that when operation at vocal cords In active state, so lesion excision is often less accurate, and Accessory injury is easily caused, particularly with biggish lesion (lesion model Enclose and be greater than 3mm), electronics (fiber) laryngoscope menisectomy also has following more formidable difficulty: 1, extent of disease is larger, uses larynx Portion's biopsy forceps cannot take into operation in 2-3 pincers, and it is unclear that visual area bleeding will lead to lesion outline, be easy to accidentally injure normal tissue, 2, it is unclear to directly result in lens blur for bleeding, can not operate；3, bleeding will lead to operating time extension more, under patient's tolerance Drop can cause pharyngeal reflex or even cough of choking, and throat is dynamic to spend greatly, cause operation difficult or even failure.

Collation surgery art utilizes the energy of low-temperature plasma radio frequency, with lower temperature (40-70 DEG C) Lai Jinhang The ablation of tissue is cut off, small to tissue damage.Compared to laryngeal biopsy forceps, the low-temperature plasma cutting ablation knife of throat is applied to Operation on larynx under local anaesthesia can complete ablation cutting and hemostatic function while being accurately positioned pathological tissues, keep good Surgical field of view can satisfy the demand of larger extent of disease excision, and tissue damage is small but excellent really, and bleeding is few, operation safety It is high.The low-temperature plasma cutting ablation knife of the throat clinically applied at present is rodlike head, does not allow to be fixed easily in active organization, Cause damage range big after slippage, and influences operation precision.In addition, the low-temperature plasma of rodlike head is cut for big lesion Ablation knife is unable to satisfy operation needs.

Utility model content

The purpose of the utility model is to overcome above-mentioned technological deficiencies, provide a kind of bipolar jaw type cutting ablation knife of throat, use In the treatment of vocal cords benign proliferative lesion, local anaesthesia can be used, by method of clamping to disease under electronics (fiber) laryngoscope Become tissue and carry out cutting ablation, controllability is good, and excision extension control is accurate, can stop blooding very well in operation.

The technical solution adopted in the utility model is: the bipolar jaw type cutting ablation knife of throat, mainly includes casing, manipulator Handle, first electrode and second electrode, cannula end are fixed in operation handle, and push rod is provided in casing, and second electrode is fixed In casing front end, fixed in insulating sleeve insertion casing with casing, first electrode is connect through pin shaft with insulating sleeve, first electrode The end bar that is connected connect with push rod front end, push rod end is connect with thruster is held, the first electricity when holding thruster push-and-pull push rod Pole and second electrode form openable and closable jaw, and described sleeve pipe inner and outer wall insulate, the outside of be connected bar and push rod It insulate, first electrode and second electrode are connect through conducting wire with connector respectively, and connector and radiofrequency ablation system connect It connects, the on-load voltage in first electrode or second electrode, first electrode and second electrode act on pathological tissues, in the first electricity Current loop is formed between pole, pathological tissues and second electrode.

Further, the bar that is connected is made of first connecting rod and second connecting rod, first connecting rod front end and first electrode Fixed, the front end of rear end and second connecting rod is hinged, and the rear end of second connecting rod and push rod are hinged.More preferably, in first connecting rod and One electrode is integrally formed, and the insulating sleeve and sleeve upper end of first electrode opening direction are provided with opening, in second electrode side It is provided with connecting rod outlet on insulating sleeve and casing, first electrode is enable to open greater angle.

Further, thruster is held to be mounted in operation handle and be slidably matched with operation handle.

Further, the operation handle front is equipped with cavity along central axis, and rear end is equipped with grip ring, between cavity and grip ring Middle section or so be formed through through slot, form guide rod above and below through slot, hold the middle section that thruster is sleeved on operation handle, hold On thruster limited block insertion through slot in and with guide rod cooperation to hold thruster movement rise limit guiding role, push rod end from Casing enters cavity and fixes with thruster is held.

Further, the thruster of holding is formed between front limit portion and rear limiting section with front limit portion and rear limiting section Groove.

Further, in the conducting wire setting set tube wall being connect with second electrode, in operation handle front end after casing extraction It is connect with connector.

Further, the material selection conductive metal or graphene of the first electrode and second electrode.More preferably, described to lead Electric metal is stainless steel, titanium alloy, tungsten alloy, partinium, nickel alloy or Nitinol.

Bipolar jaw type cutting ablation its first electrode of knife of the throat of the utility model is retractable under push rod effect, the second electricity It is extremely fixed, openable and closable jaw, convenient accurate clamping pathological tissues, first after clamping are formed by first electrode and second electrode On-load voltage on electrode or second electrode, first electrode and second electrode act on pathological tissues, in first electrode, pathological tissues When forming current loop between second electrode, target lesion tissue can be accurately acted on, normal tissue will not be accidentally injured, reached very Good ablation cuts off effect；The utility model can disappear to big pathological tissues by way of repeatedly clamping, repeatedly melting Melt processing, use scope of the further expansion Collation surgery art in operation on larynx makes more vocal cords hyperplasia of prostate The operation that venereal disease becomes can be completed under local anesthesia, eliminate general anesthesia risk, improve the safety of operation, reduce treatment cost.

Detailed description of the invention

Fig. 1 the utility model structure diagram.

Fig. 2 is the partial enlarged view in Fig. 1.

Fig. 3 is the structural schematic diagram that jaw is opened.

Fig. 4 is A-A sectional view in Fig. 2.

Fig. 5 is B-B sectional view in Fig. 2.

Fig. 6 be in Fig. 1 C to cross-sectional view.

Fig. 7 be in Fig. 1 D to cross-sectional view.

Fig. 8 is standoff features schematic diagram.

Fig. 9 is partial schematic diagram at jaw.

Description of symbols: 1 first electrode, 2 second electrodes, 3 are connected bar, 31 first connecting rods, 32 second connecting rods, and 4 Casing, 5 insulating sleeves, 6 push rods, 7 hold thruster, 71 front limit portions, 72 grooves, and limiting section after 73,74 limited blocks, 75 lumens, 8 hold Ring, 9 operation handles, 91 guide rods, 92 through slots, 93 cavitys, 10 grip ring inner cavities, 11,17 conducting wires, 12 connectors, 13,14,15 pins Axis, the outlet of 16 connecting rods, 18 openings, 19 notches.

Specific embodiment

The bipolar jaw type cutting ablation knife of the throat of the utility model, mainly includes casing 4, operation handle 9, holds thruster 7, connection Dynamic connecting rod 3, first electrode 1 and second electrode 2,4 end of casing are fixed in operation handle 9, and push rod 6 is provided in casing 4, Second electrode 2 is fixed on 4 front end of casing, insulating sleeve 5 be inserted into it is fixed with casing 4 in casing 4, first electrode 1 through pin shaft 13 with Insulating sleeve 5 connects, and the end of first electrode 1 bar 3 that is connected is connect with 6 front end of push rod, holds thruster 7 and is mounted on manipulator It is slidably matched on handle 9 and with operation handle 9, first electrode 1 and second electrode 2 form openable and closable when holding the push-and-pull push rod 6 of thruster 7 Jaw, 4 inner and outer wall of described sleeve pipe insulate, and the outside of be connected bar 3 and push rod 6 is insulated, first electrode 1 and second Electrode 2 is connect through conducting wire with connector 12 respectively, and connector 12 is connect with radiofrequency ablation system, respectively in first electrode 1 and first electrode 1 on on-load voltage, first electrode 1 and second electrode 2 act on pathological tissues, in first electrode 1, lesion group It knits and forms current loop between second electrode 2.

The bar 3 that is connected in the present embodiment is made of first connecting rod 31 and second connecting rod 32,31 front end of first connecting rod and the First connecting rod 31 and first electrode 1, or are directly integrally formed by the connection of one electrode 1, first electrode 1 with second electrode 2 Opposite to form the partially electronically conductive outer of jaw, other parts do insulation processing, and 31 rear end of first connecting rod is connected by pin shaft 14 and second The front end of bar 32 is hinged, and the rear end of second connecting rod 32 is hinged by pin shaft 15 and push rod 6.In the exhausted of 1 opening direction of first electrode Edge sleeve 5 and 4 upper end of casing are provided with opening 18, are provided with connecting rod on the insulating sleeve 5 and casing 4 of 2 side of second electrode Outlet 16, enables first electrode 1 to open greater angle.

9 front central axis of operation handle is equipped with cavity 93 in the present embodiment, and rear end is equipped with grip ring 8, and finger is inserted into grip ring Facilitate hand-held in chamber 10, the middle section or so between cavity 93 and grip ring 8 is formed through through slot 92, and 92 top of through slot is under Rectangular to hold the middle section that thruster 7 is sleeved on operation handle 9 at guide rod 91, the limited block 74 held on thruster 7 is inserted into through slot 92 simultaneously With guide rod 91 cooperation to hold thruster 7 movement rise limit guiding role, 6 end of push rod from casing 4 enter cavity 93 and with hold Thruster 7 is fixed.In the present embodiment, the structure of limited block 74 as shown in figure 8, there is fixed lobe 741 in the front end of limited block 74, The insertion of fixed lobe 741 is held in 7 lumen of thruster, 75 wall, fixes limited block 74 with thruster 7 is held, and has push rod in the middle part of limited block 74 Mounting portion 742, push rod 6 are fixed on push rod mounting portion 742.When holding thruster 7 along the forward movement of guide rod 91, push rod is pushed forward 6, push rod 6 pushes the bar that is connected to move up and stretch out from connecting rod outlet 16, beats first electrode 1 outward from opening 18 It opens, clamps pathological tissues using the jaw that first electrode 1 and second electrode 2 form, move backward when holding thruster 7, push rod 6 is drawn The dynamic bar 3 that is connected makes the closure of first electrode 1 with grip tissue.

Thruster 7 is held in the present embodiment with front limit portion 71 and rear limiting section 73, in front limit portion 71 and rear limiting section 73 Between form groove 72, two fingers are respectively placed in grooves on two sides 72, and rear limiting section 73 gradually broadens from front to back, front limit Portion 71 gradually broadens from rear to preceding, and grasping control is facilitated to hold thruster 7.

In conducting wire setting 4 tube wall of casing being connect in the present embodiment with second electrode 2, in 9 front end of operation handle from casing 4 It is connect after extraction with connector 12.Push rod 6 had not only controlled the folding of first electrode 1 but also had been that first electrode 1 is powered, and pushed away in push rod 6 with holding 7 junction of device conducting wire jointing 12, is coated insulation epitheca outside push rod 6, and insulation epitheca can utilize the system such as polyamide At.

As shown in figure 9, the jaw rear end that first electrode 1 and second electrode 2 open and close in the present embodiment, i.e., close to first electrode 1 with 13 hinged place of pin shaft, the notch 19 of formation triangle, 19 the widest part 0.5mm of notch between first electrode 1 and second electrode 2 Left and right, the notch 19 can prevent first electrode 1 and second electrode 2 from contacting in advance, influence cutting ablation knife after avoiding abnormal Normal work.In order to guarantee the effect of the bipolar jaw type cutting ablation knife of throat, first electrode 1 and second electrode 2 form jaw Partial height H is 2.5-4mm, and width W is 0.8-1.8mm, length 1-1.8mm.

In use, the jaw closure that first electrode 1 and second electrode 2 form, flexible casing 4 pass through electronics (or fiber) The biopsy channel of laryngoscope reaches at pathological tissues, opens jaw, is clamped using the jaw that first electrode 1 and second electrode 2 are formed After pathological tissues, radiofrequency ablation system on-load voltage in first electrode 1 or second electrode 2, the first electricity are connected Pole 1 and second electrode 2 act on pathological tissues, form current loop between first electrode 1, pathological tissues and second electrode 2, Pathological tissues progress heat waste is ruined locally generating energy field, effect precision is high, Small side effects.Disappeared simultaneously using clipping The mode of melting can preferably solve the poor accuracy operated on movable vocal cords and bleeding problems, become electrolaryngoscope menisectomy It is simple and easy, it will to make the patient of a big chunk Vocal cord lesion from the pain and risk of general anesthesia operation.Further, since vocal cords Mucous membrane is the critical tissue for generating sound, can reduce mucous membrane tissue using the utility model application plasma radiofrequency ablation techniques Excision extension reduces the damage of mucous membrane tissue, and plasma belongs to cryogenic ablation, and jaw type cutter head first can precisely catch lesion group It knits, then carries out ablation excision, excision extension controllable precise can stop blooding very well again while excision, improve Vocal cord lesion Cure rate.

Claims (10)

1. the bipolar jaw type cutting ablation knife of throat, mainly includes casing, operation handle, first electrode and second electrode, feature It is that cannula end is fixed in operation handle, push rod is provided in casing, second electrode is fixed on casing front end, and insulating sleeve is inserted Enter in casing and fixed with casing, first electrode is connect through pin shaft with insulating sleeve, the end of first electrode be connected bar with The connection of push rod front end, push rod end are connect with thruster is held, and first electrode and second electrode composition can be opened when holding thruster push-and-pull push rod The jaw of conjunction, described sleeve pipe inner and outer wall insulate, and the outside of be connected bar and push rod is insulated, first electrode and second Electrode is connect through conducting wire with connector respectively, and connector is connect with radiofrequency ablation system, in first electrode or the second electricity Extremely upper on-load voltage, first electrode and second electrode act on pathological tissues, first electrode, pathological tissues and second electrode it Between form current loop.

2. the bipolar jaw type cutting ablation knife of throat according to claim 1, it is characterized in that the bar that is connected is by first Connecting rod and second connecting rod composition, first connecting rod front end are fixed with first electrode, and the front end of rear end and second connecting rod is hinged, and second connects The rear end of bar and push rod are hinged.

3. the bipolar jaw type cutting ablation knife of throat according to claim 2, it is characterized in that in first connecting rod and first electrode It is integrally formed, the insulating sleeve and sleeve upper end of first electrode opening direction are provided with opening, the insulation sleeve in second electrode side Connecting rod outlet is provided on cylinder and casing.

4. the bipolar jaw type cutting ablation knife of throat according to claim 1-3, is mounted on it is characterized in that holding thruster It is slidably matched in operation handle and with operation handle.

5. the bipolar jaw type cutting ablation knife of throat according to claim 4, it is characterized in that the operation handle front central Axis is equipped with cavity, and rear end is equipped with grip ring, and middle section between cavity and grip ring or so is formed through through slot, above and below through slot Guide rod is formed, the middle section that thruster is sleeved on operation handle is held, hold in the limited block insertion through slot on thruster and is matched with guide rod It closes to act the movement for holding thruster and limits guiding role, push rod end enters cavity from casing and fixes with thruster is held.

6. the bipolar jaw type cutting ablation knife of throat according to claim 1-3, it is characterized in that described hold thruster tool There are front limit portion and rear limiting section, forms groove between front limit portion and rear limiting section.

7. the bipolar jaw type cutting ablation knife of throat according to claim 1-3, it is characterized in that connecting with second electrode In the conducting wire setting set tube wall connect, it is connect after casing extraction with connector in operation handle front end.

8. the bipolar jaw type cutting ablation knife of throat according to claim 1-3, it is characterized in that first electrode and the The jaw rear end of two electrode foldings forms triangle close to first electrode and pin shaft hinged place between first electrode and second electrode The notch of shape.

9. the bipolar jaw type cutting ablation knife of throat according to claim 1-3, it is characterized in that the first electrode With the material selection conductive metal or graphene of second electrode.

10. the bipolar jaw type cutting ablation knife of throat according to claim 9, it is characterized in that the conductive metal is stainless Steel, titanium alloy, tungsten alloy, partinium, nickel alloy or Nitinol.