CN109512506A - Bipolar surgical instrument - Google Patents

Abstract

A kind of bipolar forceps include mechanical tong, and the mechanical tong includes first axle and the second axis, the handle that each axis has the clamp member extended from its distal end and is arranged in its proximal end, and the handle surrounds the movement of pivot for realizing clamp member relative to each other.Disposable shell is configured to be releasably attached at least one of axis and electrode assembly is configured to be releasably attached to disposable shell.Electrode assembly includes the electrode that can be releasably attached to clamp member.At least one of electrode includes knife channel, and the knife channel is configured to by wherein receiving knife blade to cut the promptly tissue between clamp member.Actuating mechanism is configured to selectively propel knife blade by knife channel to cut tissue.

Description

Bipolar surgical instrument

Present patent application be the applying date be August in 2014 7, application No. is 201410384505.2, denominations of invention For the divisional application of the application for a patent for invention of " bipolar surgical instrument ".

Technical field

This disclosure relates to be used for the pincers of open surgical process.More particularly, this disclosure relates to can be closed and cutting group That knits is used to treat the bipolar forceps of tissue.

Background technique

Haemostatic clamp or pincers be simple pincer-like tool, compressed using the mechanical action between its clamp blood vessel and Usually during open surgical using to firmly grasp, cutting and/or grip tissue.Electrosurgical forceps using mechanical grip movement and Electric energy is to realize hemostasis by heating tissue and blood vessel to solidify, burn and/or be closed tissue.

Certain surgical procedures need to be closed and cutting vessel or vascular tissue.Several journal of writings are disclosed using electrosurgery The method of surgical closure thin vessels.Entitled " Studies on Coagulation and the Development of an Automatic Computerized Bipolar Coagulator " article (J.Neurosurg., volume 75,1991 7 Month) describe it is a kind of for being closed the bipolar coagulator of thin vessels.This article, which is claimed, safely to be arrived greater than 2 solidification diameter The artery of 2.5mm.Entitled " Automatically Controlled Biopolar Electrocoaguation- " COA- Second article (Neurosurg., revised edition (1984), the 187-190 pages) of COMP " " describes a kind of for terminating arrival The electrosurgical power of blood vessel allows to avoid the method for vascular wall burnt.

By using Electrosurgical forceps, surgeon can be applied to the intensity of the electrosurgical energy of tissue, frequency by control Rate and duration burn, sets/dries, reduce or slow down bleeding and/or closure blood vessel.In general, the electricity of Electrosurgical forceps Gas configuration can be classified as two categories: 1) monopolar electrosurgical clamps；With 2) bipolar electrosurgical forceps.

Monopolar forcep uses an effector-associated active electrode with gripping ends and is typically attached to patient in outside Remote patient's refurn electrode or pad.When applying electrosurgical energy, energy is transmitted to operative site from active electrode, passes through Patient and reach refurn electrode.

Bipolar electrosurgical forceps use two generally opposite electrodes, and the electrode arrangement is in the relatively interior of end effector On surface and all it is electrically coupled to Electrosurgical generator.Each electrode is charged to different potentials.Since tissue is electric flux Conductor, therefore when firmly grasping tissue therebetween using actuator, pass through tissue to the electric flux property of can choose.

Summary of the invention

This disclosure relates to be used for the pincers of open surgical process.More particularly, this disclosure relates to can be closed and cutting group That knits is used to treat the bipolar forceps of tissue.

By convention, term " distal side " is indicated herein further from the end of the device of operator, and term is " close Side " is indicated herein closer to the end of the Electrosurgical forceps of operator.

The bipolar forceps include mechanical tong, and the mechanical tong includes first axle and the second axis.Clamp member is from each axis Distal end extends.Handle arrangements are in the proximal end of each axis to realize that the clamp member surrounds pivot from first relative to each other Position is to the movement of the second position, and the clamp member described in the first position is arranged relative to each other with spaced relationship, in institute The cooperation of clamp member described in the second position is stated to firmly grasp tissue.Disposable shell is configured to be releasably attached in the axis One or both.Electrode assembly, which is associated with and is had with the disposable shell, can be releasably attached to the first axle The second electrode of the first electrode of clamp member and the clamp member that second axis can be releasably attached to.Each electrode Electrosurgical energy source is suitably connected to allow electrosurgical energy to be selectively conducted through tissue.One in the electrode Or both include along it length limit knife channel.The knife channel is configured to by wherein receiving scalpel Piece is to cut the promptly tissue between the clamp member.Actuating mechanism is at least partially disposed in the shell and matches It is set to and selectively propels the knife blade by the knife channel to cut tissue.

Additionally or alternatively, the bipolar forceps also may include scalpel locking mechanism, when the clamp member is in The scalpel locking mechanism is configured to that the knife blade is forbidden to be advanced in the knife channel when first position.

Additionally or alternatively, the scalpel locking mechanism can be moved to the second position from first position to allow It states knife blade to selectively propel through the knife channel, in the first position when the clamp member is in described The scalpel locking mechanism engages the actuating mechanism when first position, in the second position when the clamp member is in The scalpel locking mechanism is detached from the actuating mechanism when second position.

Additionally or alternatively, at least one of described axis can be configured to be moved to described the when the clamp member The scalpel locking mechanism is engaged when two positions and the mobile scalpel locking mechanism is detached from the actuating mechanism to permit Perhaps the described knife blade, which promotes, passes through the knife channel.

Additionally or alternatively, the bipolar forceps also may include at least one pressable for being supported by the shell by Button, at least one described pressable button arrangement are selectively delivered to the electrode at by electrosurgical energy.

Additionally or alternatively, the pivot can be limited through longitudinal slot therein, and the knife blade can be with It is configured to move in the longitudinal slot when it is translated.

Additionally or alternatively, the bipolar forceps also may include at least one handle component extended from the shell. At least one described handle component can be operably linked to the actuating mechanism and be configured to realize the knife blade It promotes and passes through the knife channel.

Additionally or alternatively, each of the electrode may include conductive seal surface and to be connected to the conduction close Seal the insulating substrate on surface.

Additionally or alternatively, each of the electrode may include at least one mechanical interface, it is described at least one Mechanical interface be configured to the corresponding mechanical interface complementation on one in the clamp member with by the electrode releasedly It is connected to the clamp member.

Additionally or alternatively, the actuating mechanism may include biasing member, and the biasing member is configured to will be described Actuating mechanism is biased into unactuated position.

Additionally or alternatively, the bipolar forceps also may include operation knife guides, the scalpel guide part supports In the housing and there is the longitudinal slot for passing through and wherein limiting, the longitudinal slot receives the knife blade wherein to incite somebody to action The knife blade is aligned with the knife channel.

According to another aspect of the present disclosure, a kind of bipolar forceps are provided.The bipolar forceps include mechanical tong, the mechanical tong packet First axle and the second axis are included, each axis has the clamp member extended from its distal end.Handle arrangements the proximal end of each axis with Just realize that the clamp member surrounds movement of the pivot from first position to the second position relative to each other, in the first position The clamp member arranges that the clamp member described in the second position cooperates to firmly grasp group relative to each other with spaced relationship It knits.Disposable shell has opposite half portion, and the opposite half portion is configured to releasedly be coupled to each other at least partly to include One or both in the axis.Electrode assembly, which is associated with and is had with the disposable shell, can be releasably attached to institute It states the first electrode of the clamp member of first axle and the second electricity of the clamp member of second axis can be releasably attached to Pole.Each electrode is suitably connected to electrosurgical energy source to allow electrosurgical energy to be selectively conducted through holding therebetween Tissue.At least one of described electrode includes the knife channel limited along its length, the knife channel configuration At by receiving knife blade wherein to cut the promptly tissue between the clamp member.Actuating mechanism at least partly cloth It sets in the shell and is configured to selectively propel the knife blade by the knife channel to cut tissue. Scalpel locking mechanism is configured to be moved to the second position from first position to allow the knife blade to promote through the hand Art knife channel, the scalpel locking mechanism engagement when the clamp member is in the first position in the first position The actuating mechanism works as the clamp to forbid the knife blade to promote through the knife channel, in the second position Component is in the scalpel locking mechanism when second position and is detached from the actuating mechanism.

Additionally or alternatively, at least one of described axis can be configured to be moved to described the when the clamp member The scalpel locking mechanism is engaged when two positions and the mobile scalpel locking mechanism be detached from the actuating mechanism and The knife blade is allowed to promote through the knife channel.

Additionally or alternatively, the pivot can be limited through longitudinal slot therein, and the knife blade can be with It is configured to promote when it is translated through the longitudinal slot.

Additionally or alternatively, the bipolar forceps also may include operation knife guides, the scalpel guide part supports In the housing and there is the longitudinal slot for passing through and wherein limiting, the longitudinal slot receives the knife blade wherein to incite somebody to action The knife blade is aligned with the knife channel.

Additionally or alternatively, the bipolar forceps also may include at least one handle component, at least one described handle Component is configured to realize that the knife blade is promoted through the knife channel.At least one described handle component can be from institute Shell is stated to extend and the actuating mechanism can be operably linked to.

According to another aspect of the present disclosure, a kind of bipolar forceps are provided.The bipolar forceps include mechanical tong, the mechanical tong packet First axle and the second axis are included, each axis has the clamp member extended from its distal end.Handle arrangements the proximal end of each axis with Just realize that the clamp member surrounds movement of the pivot from first position to the second position relative to each other, in the first position The clamp member arranges that the cooperation of the clamp member described in the second position is to firmly grasp therebetween relative to each other with spaced relationship Tissue.Disposable shell is configured to be releasably attached at least one of described axis.Electrode assembly is configured to releasably Ground is connected to the clamp member and is suitably connected to electrosurgical energy source to allow electrosurgical energy selectively to conduct Pass through the tissue being maintained between the clamp member.At least one of described electrode includes the hand limited along its length Art knife channel.The knife channel is configured to by wherein receiving knife blade to cut promptly between the clamp member Tissue.In the housing and with the longitudinal slot wherein limited is passed through, the longitudinal slot exists scalpel guide part supports Receive the knife blade wherein the knife blade to be aligned with the knife channel.Actuating mechanism at least partly cloth It sets in the shell and is configured to selectively propel the knife blade by the knife channel to cut tissue. At least one handle component extends from the shell.At least one described handle component is operably linked to the actuating mechanism And it is configured to realize that the knife blade is promoted through the knife channel.Scalpel locking mechanism is configured to by the axis At least one of component engages and the scalpel locking mechanism is moved to the second position from first position to allow It states knife blade to selectively propel through the knife channel, in the first position when the clamp member is in described The scalpel locking mechanism engages the actuating mechanism to forbid the knife blade to be advanced to the operation when first position In knife channel, in the second position, when the clamp member is in the second position, the scalpel locking mechanism is detached from The actuating mechanism.

Additionally or alternatively, the operation knife guides may extend through the longitudinal slot limited by the pivot.

Additionally or alternatively, at least one described handle component can be moved into the second position from first position, Knife blade described in the first position is arranged in the shell, and the propulsion of the knife blade described in the second position passes through institute State knife channel.

Additionally or alternatively, the actuating mechanism may include biasing member, and the biasing member is configured to will be described At least one removable fixed handle is moved to the first position from the second position.

Detailed description of the invention

Each embodiment of this instrument is described herein with reference to attached drawing, in which:

Fig. 1 is include mechanical tong, disposable shell and disposable electrode component according to an embodiment of the present disclosure bipolar The perspective view of pincers；

Fig. 2 is the amplification of the distal end of the bipolar forceps of Fig. 1, perspective view；

Fig. 3 is the perspective view of the bipolar forceps of Fig. 1 of component separation；

Fig. 4 is amplification, the internal side view of the disposable shell and disposable electrode component of Fig. 1 that are removed of component part ground Figure；

Fig. 5 is the substantially amplification of the disposable electrode component of Fig. 1, perspective view；

Fig. 6 and 7 is the large scale enlarged perspective of the electrode of the disposable electrode component of Fig. 1 of component separation；

Fig. 8 be promptly tissue to realize the perspective views of the bipolar forceps of Fig. 1 of tissue closure；And Fig. 9 A-9C is the double of Fig. 1 The general internal of pole pincers, side view, describe the sequence of movement to show the operation of bipolar forceps.

Specific embodiment

Initial reference Fig. 1-3, the bipolar forceps 10 for open surgical process include the machinery with end effector 24 Pincers 20 and disposable electrode component 21.Mechanical tong 20 includes the first and second elongated shaft members 12 and 14.Elongated shaft member 12 is wrapped Corresponding proximally and distally part 13 and 17 is included, and elongated shaft member 14 includes corresponding proximally and distally part 15 and 19. Handle component 16 and 18 is arranged at the proximal part 13,15 of shaft member 12,14, and user is configured to allow for realize shaft member At least one of 12 and 14 movement relative to each other.End effector 24 includes respectively from the distal portion of shaft member 12 and 14 Divide the 17 and 19 opposite clamp members 42,44 extended.Clamp member 42,44 responds the movement of shaft member 12,14 relative to that This is removable.

Shaft member 12 and 14 is fixed to one another around pivot 25 so that the movement of shaft member 12,14 leads to clamp member 42,44 It is moved to the second configuration (Fig. 9 B and 9C), such as clamping or closed configuration from the first configuration (Fig. 9 A), such as opening configuration, in institute It states the first configuration clamp member 42,44 to arrange relative to each other with spaced relationship, be assisted in the second configuration clamp member 42,44 Make with tissue 150 (Fig. 8) promptly therebetween.In some embodiments, pincers 10 can be configured so that one in shaft member 12,14 A or both movement causes the only one in clamp member mobile relative to another clamp member.Pivot 25 includes passing through It a pair of substantially semi-circular hole 25a, 25b for wherein arranging and is configured to sit in pivot hole 29 (Fig. 3) and allows pivot 25 rotate freely through in pivot hole 29, as described in further detail below.

Each shaft member 12 and 14 also respectively includes ratchet part 32 and 34.Corresponding axle portion of each ratchet 32,34 from it The proximal part 13,15 of part 12,14, with the extension of general vertical alignment, connects towards another ratchet so that working as shaft member 12,14 The inward faces of each ratchet 32 and 34 are adjacent to each other when close.Each ratchet 32 and 34 respectively includes multiple flanges 31 and 33 (figure 3), the flange is prominent from the inward faces of each ratchet 32 and 34, allows ratchet 32 and 34 in one or more positions Place's interlocking.In some embodiments, each ratchet position keeps the specific strain energy in shaft member 12 and 14 to close specific Resultant force is applied to end effector 24.At least one of shaft member, such as shaft member 12 include tang 99, and the tang is convenient for Operation pincers 20 and are attached on mechanical tong 20 during surgical state convenient for electrode assembly 21, as below will institute in more detail It states.

With reference to Fig. 2 and 3, disposable electrode component 21 is configured to be releasably attached to mechanical tong 20, as detailed below, and It is operably linked to the shell 70 with a pair of of shell half portion 70a, 70b, the shell half portion is configured to be matingly engaged simultaneously And releasedly comprising at least part of shaft member 14.Shell 70 is also used for accommodating scalpel 85, and the scalpel has point Sharp distal cutting edge 89 (Fig. 9 C) has the scalpel being configured in the longitudinal slot 87 (Fig. 3) for wherein receiving knife blade 85 Guide part 86 and scalpel actuating mechanism 90 (Fig. 3), the scalpel actuating mechanism are configured to realize that knife blade 85 promotes By the knife channel 58 (Fig. 2) that is defined in one or two electrode 110,120 with transecting patient tissue, such as further below in detail It states.The inside of each of shell half portion 70a, 70b may include being arranged in multiple cooperation mechanical interfaces of position with reality The mechanical attachment of existing shell half portion 70a, 70b is to form shell 70.

As shown in Figures 4 and 5, a pair of of line 61 and 62 is electrically connected respectively to electrode 120 and 110, and is tied to be formed Cable 28, the cable extend through shell 70 and terminate at terminal connector 30 (Fig. 1 and 3), and the terminal connector is matched It is set to and is mechanically and electrically connected to suitable energy source, such as Electrosurgical generator (not shown).Electrosurgical generator One example is sold by CovidienVessel sealing generator andOccur Device.In some embodiments, the one or both in handle component 16 and 18 may include suitable mechanical interface (for example, connecing Line seat), the mechanical interface is configured to releasably hold cable 28 to help prevent cable 28 dry during the operation of pincers 10 Disturb surgical hand.

Referring now to Fig. 3-7, electrode assembly 21 includes substantial circular protruding part 49, and the protruding part is configured to seat and puts (for example, frictional fit) in the complimentary aperture 71 arranged by the distal end of shell half portion 70a with by electrode assembly 21 releasedly It attaches thereunto.21 bifurcated of electrode assembly extends two forks 103 and 105 to support electrode respectively from it towards distal side 110 and 120.Electrode 120 includes the conductive seal surface 126 being configured to by wherein conducting electrosurgical energy and is used for clamp The electrically insulating substrate bottom 121 that component 42 is electrically insulated with sealing surfaces 126.Sealing surfaces 126 and substrate 121 pass through any suitable group Dress method, such as snap fit engagement are attached to each other by the way that substrate 121 is overmolded into sealing surfaces 126.In some realities It applies in example, substrate 121 is manufactured by injection molded material.Substrate 121 includes multiple bifurcated anchor parts extending therefrom 122, the anchor part is configured in the phase for being inserted into inward faces 47 (Fig. 3) arrangement at least partially through clamp member 44 It compresses during in the multiple sockets 43 answered and then expands after the insertion to be releasably engaged corresponding socket 43 to incite somebody to action Electrode 120 is connected to inward faces 47.Substrate 121 also include alignment pin 124 (Fig. 6), the alignment pin configurations at engagement at least The hole 65 arranged partially by the inward faces 47 of clamp member 44 to guarantee electrode 120 and clamp member 44 during assembly Be properly aligned with.Conductive seal surface 126 includes the extension 135 with wire crimp part 117, and the wire crimp part is configured to insert Enter in the distal end 106 of the fork 105 of electrode assembly 21 and is electrically connected to the line 61 (Fig. 5) being arranged therein.

Substantially as described in above for electrode 120, electrode 110 includes being configured to by wherein conducting electrosurgical energy Conductive seal surface 116 and the electrically insulating substrate bottom 111 for being attached to it, as shown in Figure 7.Substrate 111 includes extending therefrom more A bifurcated anchor part 112, the anchor part are configured to be inserted into the inward faces at least partially through clamp member 42 It compresses during in corresponding multiple sockets 41 of 45 (Fig. 3) arrangement and is then expanded after the insertion to be releasably engaged phase The socket 41 answered is to be connected to inward faces 45 for electrode 110.Substrate 111 also includes alignment pin 128 (Fig. 4), the alignment pin It is configured to be bonded to the hole 67 at least partially through the arrangement of inward faces 45 of clamp member 42 to guarantee electrode during assembly 110 are properly aligned with clamp member 42.Sealing surfaces 116 include the extension 155 with wire crimp part 119, the line pressure Fitting is configured in the distal end 104 of the fork 103 of insertion electrode assembly 21 and is electrically connected to the line 62 being arranged therein.Substrate 111 include the extension 165 for extending proximally and being configured to couple to the extension 155 of sealing surfaces 116 from it.

With reference to Fig. 4, at least one of fork member 103,105 is flexible, so that fork member 105 and 103 is relative to that This is easily moved.In some embodiments, by being initially moved toward each other fork 103,105, electrode assembly 21 be can remove Ground is attached to mechanical tong 20.When clamp member 42,44, which is in, opens configuration, electrode 120 and 110 can be in opposite clamping jaw Slided between part 44 and 42, allow anchor part 122 and 112 and guide pin 124 and 128 respectively with corresponding socket 43 and 41 or hole 65 and 67 be aligned and be inserted to couple electrode 120 and 110 with clamp member 44 and 42 respectively.Shell half portion Then it includes at least one of shaft member 14 that 70a, 70b can releasedly couple to form shell 70 in the above described manner Point.

In order to be electrically controlled end effector 24, shell 70 supports a pair of of pressable start button 50a, 50b, described to press Button can be activated respectively corresponding switch 60a, the 60b being arranged in shell 70 by user's operation.Although being not explicitly shown, It is that switch 60a, 60b are electrically interconnected with line 61,62 respectively, and for starting and to terminate electrosurgical energy defeated from suitable energy source End effector 24 is sent to realize tissue closure.

Once establishing tissue closure, knife blade 85 can be promoted through knife channel 58 with crosscutting closure tissue, such as Lower detailed description.However, in some embodiments, knife blade 85 can promote before, during or after tissue closure passes through hand Art knife channel 58.In some embodiments, scalpel locking mechanism 80 is provided to open configuration when clamp member 42,44 is in When prevent knife blade 85 from extending in knife channel 58, therefore prevent tissue accident or too early it is crosscutting, as detailed below.

With reference to Fig. 3, scalpel actuating mechanism 90 with have extend from the opposite side of shell 70 opposite handle component 45a, The trigger 45 of 45b is operably associated.As actuation handle component 45a, 45b, the response of scalpel actuating mechanism 90 uses one Series cooperates element actuating knife blade 85 by knife channel 58 to cut off promptly between clamp member 42,44 Tissue is such as described in detail below with reference to Fig. 9 C.More specifically, scalpel actuating mechanism 90 includes first connecting rod 92, the first connecting rod It is operably linked to shaft member 47 at one end and second connecting rod is connected to by pivot pin 92a at opposed end 94.Shaft member 47 laterally extend through shell 70 with the handle component 45a for the opposite side from shell 70 that is operably connected, 45b.Second connecting rod 94 is operably linked to first connecting rod 92 by pivot pin 92a at one end and in the other end Place is connected to the proximal end of knife blade 85 by pivot pin 94a (Fig. 9 A).Shaft member 14 is limited through longitudinal slot 14a therein, The longitudinal slot is configured to receive the first and second connecting rods 92,94 wherein.As actuation handle component 45a, 45b, the first He Second connecting rod 92,94 extends through longitudinal slot 14a and by wherein moving freely through, such as further detailed below with reference to Fig. 9 C It states.

Biasing member 95 (for example, torsional spring) is arranged in 92 He of first connecting rod co-axially around at least part of shaft member 47 Between handle component 45a.Biasing member 95 be operably linked at one end a part of first connecting rod 92 and The suitable mechanical interface being connected in shell 70 at the other end, the machinery connects during the use of scalpel actuating mechanism 90 Biasing member 95 is stablized in mouth support.Biasing member 95 makes to pass through operation in actuating knife blade 85 for biased flip-flop 45 After knife channel 58 (Fig. 9 C), handle component 45a, 45b are biased to return to unactuated position (Fig. 9 A and 9B), thus by hand Art blade 85 is proximally retracted into unactuated position (Fig. 9 A and 9B).

With reference to Fig. 3, pivot 25 includes a pair of holes 25a, 25b by wherein arranging, the pair of hole is configured to exist respectively It wherein receives a pair of of complementary projection and divides 13a, 13b, the protrusion part extends and limits from the distal portions 17 of shaft member 12 It is scheduled on longitudinal passage 27 therebetween.Protrusion part 13a, 13b fully extend from the distal part of shaft member 14, so that hole 25a, 25b can receive protrusion part 13a, 13b wherein respectively, while keep the distal part of pivot 25 and shaft member 14 at interval Relationship is received with allowing to perform the operation knife guides 86 by access 27.The movement of shaft member 12,14 relative to each other leads to pivot 25 rotary motion in pivot hole 29.

Perform the operation knife guides 86 70 inner support of shell between end effector 24 and scalpel actuating mechanism 90 and Extend through access 27.The longitudinal slot 87 of operation knife guides 86 is that knife blade 85 provides lateral support and limits scalpel The left and right lateral movement of piece 85.Therefore, operation knife guides 86 in distal side are used for knife blade 85 relative to end effector 24 It is pushed to center, is thus protected when knife blade 85 enters knife channel 58 (Fig. 2) being defined in electrode 110,120 Card knife blade 85 is properly aligned with.

In some embodiments, pincers 10 include the knife blade locking mechanism 80 being supported in shell 70, work as clamp member 42,44 is logical for preventing knife blade 85 to be advanced to scalpel in configuration (Fig. 9 A) Shi Suoshu knife blade locking mechanism is opened In road 58.With reference to Fig. 3, knife blade locking mechanism 80 includes safe connecting rod 81, the safe connecting rod and 83 (example of biasing member Such as, leaf spring) it is operatively coupled and is pivotally supported in shell 70.In the opening configuration of clamp member 42,44, operation Blade 85 is in unactuated position (Fig. 9 A and 9B), and safe connecting rod 81 is engaged with pivot pin 94a (Fig. 9 A) so that forbidding hand Art blade 85 is promoted towards distal side.As shown in fig. 1, shell 70 includes longitudinal opening 70c, the longitudinal opening and 12 phase of shaft member Pair and exposure knife blade locking mechanism 80 so that when shaft member 12,14 is close to be moved to closure for clamp member 42,44 When position (Fig. 9 B), safe connecting rod 81 is engaged by shaft member 12.By the close pressure for being applied to safe connecting rod 81 of shaft member 12,14 Power is used for 83 against knife blade 85 of biasing member and transfers the disengaging pivot pin 94a (figure of spin safe connecting rod 81 9B), knife blade 85 is allow to be advanced in knife channel 58 (Fig. 9 C) towards distal side.It is further below with reference to Fig. 9 A-9C Scalpel actuating mechanism 90, the operation of scalpel locking mechanism 80 and the actuating of knife blade 85 are described in detail.

Tissue closure thickness and tissue closure effect can be by being applied between clamp member 44,42 during tissue closure Clearance distance between the pressure and comparative electrode 110 and 120 (Fig. 5) of tissue influences.In the closed configuration, separation or clearance gap It can be by (being only displayed as being arranged in for illustration purposes in the one or both that is arranged in sealing surfaces 116,126 from " G " On sealing surfaces 126) the array of stop component 54 (Fig. 2) be maintained between sealing surfaces 116,126.Stop component 54 contacts Sealing surfaces on opposed jaw component and forbid sealing surfaces 116,126 further to.In some embodiments, it is The effective tissue closure of offer, can provide about 0.001 inch to about 0.010 inch and ideally about 0.002 Appropriate gap distance between about 0.005 inch.In some embodiments, stop component 54 for example by it is such as secondary at Type or injection-molded technique are constructed by the plastics dielectric material or other materials being molded on sealing surfaces 116,126.Other In embodiment, stop component 54 is constructed by the heat-stable ceramic deposited on sealing surfaces 116,126.

Fig. 8 shows bipolar forceps 10 during use, and middle axle 12 and 14 is close to be applied to tissue for clamping force 150 and realize tissue closure.Once closure can cut tissue along tissue closure portion by the actuating of knife blade 85 150, such as it is described in detail below with reference to Fig. 9 A-9C.

In some embodiments, the performance of Virtual Organization's vascular testing pincers 10 can be used.More specifically, user can incite somebody to action Virtual Organization's blood vessel is placed between sealing surfaces 116,126 and clamping force is applied to blood vessel.Virtual Organization's blood vessel is for example It can be the resistive any suitable plastics of tool.User can be used from suitable Electrosurgical generator, for example by Covidien saleVessel sealing generator andThe electrosurgery energy of generator Amount closure Virtual Organization's blood vessel.User can also be with actuation handle component 45a, 45b to promote knife blade 85 logical by scalpel Road 58 is closed Virtual Organization's blood vessel to cut.In this case, Electrosurgical generator can be configured to automatically run test journey Sequence, the test program for before closing, during or after sense between the clamping force of application, comparative electrode 110,120 Clearance distance and/or Virtual Organization's blood vessel impedance.After electrode assembly 21 is assembled into mechanical tong 20 and in blood vessel Before using assembled pincers 10 in closing course, from the sensitive information, Electrosurgical generator can be used for verifying pincers 10 and be in Appropriate working condition (for example, appropriate clamping force, clearance distance etc.).

Referring now to Fig. 9 A, 9B and 9C, can be closed by mobile shaft member 12,14 clamp member 42,44 and It is opened with causing scalpel actuating mechanism 90 to translate knife blade 85 by knife channel 58 by rotating handle component 45a, 45b Begin the sequence moved.Initially, shaft member 12,14, which is in, opens configuration, and handle component 45a, 45b are in and do not activate position It sets, as illustrated in figure 9 a.End effector 24 is maintained at opening by shaft member 12,14 and the arrangement of handle component 45a, 45b Configuration, wherein clamp member 42,44 is spaced each other significantly, and knife blade 85 is in contracting relative to clamp member 42,44 Return or proximal position.Handle component shown in Fig. 9 A and 9B is initiatively kept by influence of the biasing member 95 to trigger 45 The initial position of 45a, 45b.When clamp member 42,44, which is in, opens configuration, as illustrated in figure 9 a, safe connecting rod 81 and pivot 94a is sold to engage so that the rotary motion (being described by the rotation arrows A4 in Fig. 9 C) of handle component 45a, 45b in a proximal direction It is prohibited, so that knife blade 85 is forbidden to be advanced in knife channel 58.

Clamp member 42,44 can configure from the opening of Fig. 9 A and be moved to closed configuration shown in Fig. 9 B.Work as shaft member 12,14 pivot 25 is surrounded respectively when the side of arrow A1 and A2 (Fig. 9 B) are pivoted up, shaft member 12 engages safe connecting rod 81.When Further around pivot 25 respectively when the side of arrow A1 and A2 are pivoted up, shaft member 12 exerts a force to shaft member 12,14 Safe connecting rod 81 causes biasing member 83 to resist the bias flexure of knife blade 85, thus causes safe connecting rod 81 by Fig. 9 B In rotation arrows A3 describe direction on rotate.Rotation of the safe connecting rod 81 on the direction of rotation arrows A3 is for mobile peace Full connecting rod 81 is detached from pivot pin 94a, as shown in Figure 9 C.

When safe connecting rod 81 is moved out pivot pin 94a, handle component 45a, 45b can not activating from Fig. 9 A and 9B Configuration is selectively moved to the actuated position of Fig. 9 C to promote knife blade 85 to pass through knife channel 58 towards distal side.More specifically Ground, when handle component 45a, 45b rotate to actuating shown in Fig. 9 C in the substantially proximal direction described as rotation arrows A4 When configuration, rotary force is applied to second connecting rod 94 by first connecting rod 92, and second connecting rod 94 is thus caused to rotate around pivot pin 94a And it is moved in substantially distal direction to promote knife blade 85 to pass through knife channel 58 towards distal side.

In some embodiments, scalpel actuating mechanism 90 can be different from retouching for the scalpel actuating mechanism 90 in Fig. 3 It draws and is positioned relative to shaft member 14.For example, if scalpel actuating mechanism 90 shown in Fig. 3 is disposed generally on 14 He of shaft member Between 12, then in some embodiments, the opposite side that scalpel actuating mechanism 90 can be arranged in shaft member 14 makes shaft member 14 are arranged between scalpel actuating mechanism 90 and shaft member 12.In this case, shaft member 12,14 can be alternatively configured for Permission knife blade 85 promotes the longitudinal passage 27 by being limited by protrusion part 13a, 13b (for example, via operation knife guides 86) and enter knife channel 58.For example, the respective distal end 17,19 of shaft member 12,14 can be opposite in order to scalpel 85 (example is configured in shaft member 12,14 and/or knife channel 58 with the various interlocked relationships that various orientations enter knife channel 58 Such as, lock-case configuration).

Although showing several embodiments of the disclosure in figure, the disclosure should not be limited to this, the reason is that The disclosure should it is wide such as this field by permission in range and similarly read specification.So above description is not It should be understood as limiting, but the only example of specific embodiment.Those skilled in the art will predict appended right It is required that scope and spirit in other modifications.

Although in order to which purpose that is clear or understanding has passed through diagram and aforementioned disclosure has been described in detail in example, It will be evident that certain change and modification can be carried out in the range of attached claims.

Claims (13)

1. a kind of bipolar forceps, comprising:

First axle and the second axis, the first axle have the first clamp member for being arranged on the distal end of first axle and described the Two axis have the second clamp member for being arranged on the distal end of the second axis, and the first axle and the second axis being capable of pivots relative to each other It is mobile so that first clamp member and the second clamp member move between the open and the closed positions to turn ground；

Disposable shell, the disposable shell are configured to be releasably attached to and at least partly comprising the first axle With at least one axis in the second axis；

It is configured to be releasably attached to the first electrode of first clamp member and is configured to be releasably attached to described The second electrode of second clamp member, each of the first electrode and second electrode electrode are suitably connected to electrosurgery Energy source；

Actuating mechanism, the actuating mechanism are operably linked to knife blade and can rotate to vertically move the operation Blade cuts tissue；And

Scalpel locking mechanism, the scalpel locking mechanism are configured at first clamp member and the second clamp member Forbid the knife blade mobile when the open position.

2. bipolar forceps according to claim 1 further include knife channel, the knife channel is clamped by described first At least one clamp member in clamp assembly and the second clamp member limits and is configured to receive the knife blade.

3. bipolar forceps according to claim 1 further include the first fork and the support for supporting the first electrode Second fork of the second electrode, at least one fork in first fork and the second fork Be it is flexible, first fork and the second fork are easily moved relative to each other.

4. bipolar forceps according to claim 1, wherein each of the first axle and the second axis axis include being arranged in The handle of its proximal end, the handle is for realizing first clamp member and the second clamp member in open position and closure Movement between position.

5. bipolar forceps according to claim 1, wherein first clamp member and the second clamp member be moved to it is described Open position is to be moved to first position for the scalpel locking mechanism, the scalpel locking mechanism described in the first position The actuating mechanism is engaged, and first clamp member and the second clamp member are moved to the closed position so that described Scalpel locking mechanism is detached from the actuating mechanism to allow the knife blade to be moved.

6. bipolar forceps according to claim 1, wherein at least one axis in the first axle and the second axis is configured to work as First clamp member and the second clamp member are moved to the mobile scalpel locking mechanism disengaging when closed position The actuating mechanism is to allow the knife blade to be moved.

7. bipolar forceps according to claim 1 further include at least one button, at least one described button arrangement at by An axis in the first axle and the second axis is activated to control to the electrosurgical energy of the first electrode and second electrode Conveying.

8. bipolar forceps according to claim 1 further include pivot, the pivot is operationally by the first axle and Two axis are linked together, and the knife blade is configured to move longitudinally through longitudinal slot, and the longitudinal slot is limited to by described Pivot.

9. bipolar forceps according to claim 1, wherein the actuating mechanism includes at least one handle component, it is described at least One handle component is configured to rotation to vertically move the knife blade.

10. bipolar forceps according to claim 1, wherein each of the first electrode and second electrode electrode include It is connected to the conductive seal surface of insulating substrate.

11. bipolar forceps according to claim 1, wherein the first electrode includes at least one extended from first electrode Anchoring piece, at least one described anchoring piece of the first electrode, which is configured to be received in, to be defined in first clamp member Socket in the first electrode is releasably attached to first clamp member, and the second electrode include from At least one anchoring piece that second electrode extends, at least one described anchoring piece of the second electrode are configured to be accepted in limit Due in the socket in second clamp member the second electrode is releasably attached to second clamp member.

12. bipolar forceps according to claim 1, wherein the actuating mechanism includes biasing member, the biasing member is matched It is set to and the actuating mechanism is biased into unactuated position.

13. bipolar forceps according to claim 1, further include operation knife guides, the operation knife guides are defined Longitudinal slot, the longitudinal slot, which is configured to receive the knife blade, to be passed therethrough.