CN102783982B - There is the reusable circular stapler shank of open package assembly - Google Patents

There is the reusable circular stapler shank of open package assembly Download PDF

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Publication number
CN102783982B
CN102783982B CN201110316349.2A CN201110316349A CN102783982B CN 102783982 B CN102783982 B CN 102783982B CN 201110316349 A CN201110316349 A CN 201110316349A CN 102783982 B CN102783982 B CN 102783982B
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China
Prior art keywords
shaft
anvil
anvil block
circular stapler
shank
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CN201110316349.2A
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Chinese (zh)
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CN102783982A (en
Inventor
A·K·纳拉加特拉
B·T·贾米森
D·普拉汉
D·A·德普雷
A·G·索菲
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Iscon Medical
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Iscon Medical
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Priority claimed from US13/111,770 external-priority patent/US8833629B2/en
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Abstract

The invention provides a kind of reusable circular stapler shank with open package assembly, specifically, a kind of circular stapler apparatus, including forming the shank of cavity, reciprocal transmission axle, carrier cover and shaft assembly.Described reciprocal transmission axle is removably attached in the described cavity of described shank.A part for described reciprocal transmission axle is covered in the described cavity of described shank by described carrier cover.Described shaft assembly is detachably connected with described shank.

Description

There is the reusable circular stapler shank of open package assembly
Technical field
This patent disclosure relates generally to circular stapler, more particularly, relate to that there is the reusable of open package assembly Circular stapler apparatus.
Background technology
Circular stapler apparatus is the suture instruments for enterochirurgia operation known to surgical field.The one of this type of apparatus In individual example is the Endopath ILS ECS 25 endoscope type curved lumen manufactured by Ethicon Endo Surgery Inc Stiching instrument (Endopath ILS ECS 25Endoscopic Curved Intraluminal Stapler).There is many circles Shape stiching instrument patent, such as, authorizes United States Patent (USP) No.4 of Becht, and 207,898, authorize United States Patent (USP) No.4 of Noiles, 351,466, authorize United States Patent (USP) No.5,292,053 of Bilotti et al. and authorize the United States Patent (USP) of Green et al. No.5,344,059。
At present, circular stapler apparatus is not designed to reusable, and the mode therefore generally assembled makes it difficult to not Dismantle in the case of damaging the parts of circular stapler apparatus.It addition, the parts of circular stapler apparatus are also not designed to permissible Clean after usage or sterilize.
Therefore, it is desirable to there is a kind of circular stapler can dismantled in the case of the parts not damaging circular stapler apparatus Tool, and the parts of wherein circular stapler apparatus can clean after usage or sterilize.
Summary of the invention
The disclosure is defined by the claims, and any content of this part is all not to be taken as the limit to these claim System.
In one aspect, it is provided that a kind of circular stapler apparatus.This circular stapler apparatus includes reciprocal transmission axle, and this is reciprocal Power transmission shaft has the engagement member at reciprocal transmission shaft end and the threaded adjustment means at reciprocal transmission axle base portion.Should Circular stapler apparatus also includes trigger shaft, shank, carrier cover and shaft assembly.Trigger shaft forms engaging groove and has formation opening Joint axle, by this opening receive reciprocal transmission the tip of the axis.Shank has firing trigger and forms receiving trigger shaft and past The cavity of multiple power transmission shaft.The upper end of firing trigger engages with engaging groove and trigger shaft and reciprocal transmission axle is removably attached to In the cavity of shank.Carrier cover covers trigger shaft and a part for reciprocal transmission axle.Shaft assembly is detachably connected with shank.
On the other hand, it is provided that a kind of method for assembling circular stapler apparatus.The method includes reciprocal transmission Axle is removably attached in the cavity of shank, and with carrier cover, a part for reciprocal transmission axle is covered the cavity at shank In.The method also includes detachably connected shaft assembly and shank.
It yet still another aspect, provide a kind of circular stapler apparatus.This circular stapler apparatus includes the shank, past forming cavity Multiple power transmission shaft, carrier cover and shaft assembly.Reciprocal transmission axle is removably attached in the cavity of shank.Carrier cover is by reciprocal transmission A part for axle covers in the cavity of shank.Shaft assembly is detachably connected with shank.
The present invention specifically discloses techniques below scheme:
(1). a kind of circular stapler apparatus, including:
Reciprocal transmission axle, described reciprocal transmission axle has at the engagement member of the end of described reciprocal transmission axle with in institute State the threaded adjustment means at the base portion of reciprocal transmission axle；
Trigger shaft, described trigger shaft forms engaging groove and has the joint axle forming opening, receiving institute by described opening State the described end of reciprocal transmission axle；
Shank, described shank has firing trigger and forms the described trigger shaft of receiving and the cavity of described reciprocal transmission axle, The upper end of wherein said firing trigger engages described engaging groove and by the most solid to described trigger shaft and described reciprocal transmission axle It is scheduled in the described cavity of described shank；
Carrier cover, described carrier cover covers described trigger shaft and a part for described reciprocal transmission axle；With
Shaft assembly, described shaft assembly is detachably connected with described shank.
(2). according to the circular stapler apparatus described in (1st) item, also include that anvil assembly, described anvil assembly connect with described Close component to be detachably connected in the described end of described reciprocal transmission axle.
(3). according to the circular stapler apparatus described in (1st) item, wherein said carrier cover forms opening, by described opening Receive the threaded portion of described shank.
(4). according to the circular stapler apparatus described in (1st) item, wherein said shaft assembly has and the spiral shell on described shank The attaching nut that stricture of vagina part is detachably connected.
(5). according to the circular stapler apparatus described in (1st) item, also include with described reciprocal transmission axle is described threaded The anvil block Guan Bi knob that adjustment means is detachably connected.
(6). according to the circular stapler apparatus described in (1st) item, also include the nail being detachably connected with described shaft assembly Storehouse assembly, the described end of wherein said reciprocal transmission axle extends through the central shaft being formed in described nail bin groupware.
(7). a kind of method for assembling circular stapler apparatus, including:
Reciprocal transmission axle is removably attached in the cavity of shank；
With carrier cover, a part for described reciprocal transmission axle is covered in the described cavity of described shank；And
Shaft assembly is detachably connected with described shank.
(8). according to the method described in (7th) item, described carrier cover is detachably fixed to institute by wherein said shaft assembly State shank.
(9). according to the method described in (7th) item, also include:
Described reciprocal transmission the tip of the axis is received by the opening engaging axle of trigger shaft；And
Described trigger shaft and described reciprocal transmission axle are removably attached in the described cavity of described shank.
(10). according to the method described in (9th) item, the upper end of the firing trigger of wherein said shank is in the institute of described shank Engage with the engaging groove of described trigger shaft in stating cavity.
(11). according to the method described in (7th) item, also include band spiral shell anvil block being closed knob with described reciprocal transmission axle Stricture of vagina adjustment means is detachably connected.
(12). according to the method described in (7th) item, also include being detachably connected to nail bin groupware described shaft assembly, Wherein said reciprocal transmission the tip of the axis extends through the central shaft being formed in described nail bin groupware.
(13). according to the method described in (12nd) item, also include anvil assembly at the described end of described reciprocal transmission axle Engagement member it is detachably connected at portion.
(14). a kind of circular stapler apparatus, including:
Shank, described shank forms cavity；
Reciprocal transmission axle, described reciprocal transmission axle is removably attached in the described cavity of described shank；
Carrier cover, a part for described reciprocal transmission axle is covered in the described cavity of described shank by described carrier cover； With
Shaft assembly, described shaft assembly is detachably connected with described shank.
(15). according to the circular stapler apparatus described in (14th) item, wherein said carrier cover is removable by described shaft assembly It is fixed to described shank with unloading.
(16). according to the circular stapler apparatus described in (14th) item, also include:
Trigger shaft, described trigger shaft is had the joint axle forming opening, is wherein connect by the described opening of described joint axle Receive described reciprocal transmission the tip of the axis, and wherein said trigger shaft and described reciprocal transmission axle are all removably attached to described In the described cavity of shank.
(17). according to the circular stapler apparatus described in (16th) item, wherein said shank includes that the percussion with upper end is pulled Machine, and the described upper end of wherein said firing trigger engaging groove with described trigger shaft in the described cavity of described shank connects Close.
(18). according to the circular stapler apparatus described in (14th) item, also include and the threaded tune of described reciprocal transmission axle The anvil block Guan Bi knob that joint component is detachably connected.
(19). according to the circular stapler apparatus described in (14th) item, also include being detachably connected with described shaft assembly Nail bin groupware, wherein said reciprocal transmission the tip of the axis extends through the central shaft being formed in described nail bin groupware.
(20). according to the circular stapler apparatus described in (19th) item, also include anvil assembly, described anvil assembly and joint Component is detachably connected in the described end of described reciprocal transmission axle.
Accompanying drawing explanation
The disclosure be may be better understood in conjunction with the following drawings with description.Parts in accompanying drawing are not necessarily drawn to scale, and It is to focus in the principle illustrating the disclosure.
Fig. 1 illustrates the reusable circular stapler apparatus with open package assembly according to a preferred embodiment Perspective view；
Fig. 2 illustrates the perspective view of the reusable circular stapler apparatus of Fig. 1, and wherein apparatus is in an open position, makes The remainder of anvil assembly and reusable circular stapler apparatus separates；
Fig. 3 illustrates shank and the decomposition diagram of shaft assembly of the reusable circular stapler apparatus of Fig. 1；
Fig. 3 A illustrates that a part for the reciprocating anvil block adjusting rod of the reusable circular stapler apparatus of Fig. 3 is along the line The sectional view that 3A-3A intercepts；
Fig. 3 B illustrates that another part of the reciprocating anvil block adjusting rod of the reusable circular stapler apparatus of Fig. 3 is along the line The sectional view that 3B-3B intercepts；
Fig. 4 illustrates the decomposition diagram of the staple heavy cartridges assembly of the reusable circular stapler apparatus of Fig. 1；
Fig. 5 illustrates that the staple heavy cartridges assembly of the reusable circular stapler apparatus of Fig. 1 is under unassembled configuration Partial sectional view；
Fig. 6 illustrates that the staple heavy cartridges assembly of the reusable circular stapler apparatus of the Fig. 1 under assembled configuration cuts The sectional view taken, wherein anvil assembly is in an open position, and annular blade is in pre-firing position；
Fig. 7 illustrates the view of Fig. 6, and wherein anvil assembly moves to closed position, and annular blade is still in pre-firing position；
Fig. 8 illustrates the decomposition diagram of the anvil assembly of the reusable circular stapler apparatus of Fig. 1；
Fig. 9 illustrates the flow chart of an embodiment of the method for the staple heavy cartridges assembly of alignment circular stapler apparatus；
Figure 10 illustrates the decomposition diagram of another embodiment of anvil assembly；
Figure 11 illustrates the perspective view of the reusable circular stapler apparatus of Fig. 1, wherein anvil assembly be replaced by with The anvil assembly of Figure 10 that the remainder of reusable circular stapler apparatus separates；
Figure 12 illustrates the decomposition diagram of another embodiment of anvil assembly；
Figure 13 illustrates the perspective view of the reusable circular stapler apparatus of Fig. 1, wherein anvil assembly be replaced by with The anvil assembly of Figure 12 that the remainder of reusable circular stapler apparatus separates；
Figure 14 illustrates a flow chart, shows an embodiment of the method manufacturing anvil assembly in figure；
Figure 15 A and 15B illustrates the anvil block Guan Bi knob of the reusable circular stapler apparatus of Fig. 1 and reciprocating anvil block Adjusting rod assembles the perspective assembled view in stage in difference；
Figure 16 A with 16B illustrates that the anvil block that the reciprocating anvil block adjusting rod with Figure 15 A and 15B is connected closes knob and Fig. 1's The shank of reusable circular stapler apparatus assembles the perspective assembled view in stage in difference；
Figure 17 A, 17B illustrate with 17C Figure 16 A with 16B the anvil block being connected with reciprocating anvil block adjusting rod Guan Bi knob and The trigger shaft of the reusable circular stapler apparatus of shank and Fig. 1 assembles the perspective assembled view in stage in difference；
Figure 18 A with 18B illustrates that Figure 17 A, 17B close knob, handle with the anvil block being connected with reciprocating anvil block adjusting rod of 17C The carrier cover of the reusable circular stapler apparatus of portion and trigger shaft and Fig. 1 assembles the perspective assembled view in stage in difference；
Figure 19 A, 19B illustrate the anvil block being connected with reciprocating anvil block adjusting rod Guan Bi knob, the handle of Figure 18 A with 18B with 19C The shaft assembly of the reusable circular stapler apparatus of portion, trigger shaft and carrier cover and Fig. 1 assembles the perspective in stage in difference Assemble figure；
Figure 20 illustrates the reusable circle of the bending with open package assembly according to another preferred embodiment The perspective view of shape suture instruments；
Figure 21 illustrates the decomposition diagram of the reusable circular stapler apparatus of the bending of Figure 20；
Figure 22 illustrates the sectional view of the circular stapler apparatus with the bending that friction reduces component, and wherein apparatus is in and opens State；
Figure 23 illustrates the sectional view of the circular stapler apparatus with the bending that friction reduces component, and wherein apparatus is in percussion Closed position before staple；
Figure 24 illustrates the sectional view of the circular stapler apparatus with the bending that friction reduces component, and wherein apparatus is in percussion Complete cock after staple；
Figure 25 illustrates the perspective view of the trigger shaft of the circular stapler apparatus with the bending that friction reduces component；
Figure 26 illustrates the decomposition diagram of the trigger shaft with the circular stapler apparatus that friction reduces component；
Figure 27 illustrates the sectional view of the trigger shaft with the circular stapler apparatus that friction reduces component；
Figure 28 illustrates the circular seams with the alternate embodiment that the friction adjacent with reciprocating anvil block adjusting rod reduces component The enlarged side view of the trigger shaft of clutch tool；
Figure 29 illustrates the sectional view of the annular blade of the staple heavy cartridges assembly of the circular stapler apparatus of Fig. 4；
Figure 30 illustrates the perspective view being attached to protect the annular release formula packing ring of component；
Figure 31 illustrates the view of Fig. 7, and wherein annular blade moves to firing position and cuts annular release formula packing ring Cutting, anvil assembly is in the closed position simultaneously；
Close-up view in the broken circle of the annular blade that Figure 32 is shown in Figure 31, shows cutting annular release in figure The annular blade of formula packing ring；
Figure 33 illustrates the view of Figure 31, and wherein anvil assembly has returned to open position after annular blade is fired；
Figure 33 A is shown connected to an enforcement of the anvil block control member of the shank of reusable circular stapler apparatus The closely side view of example；
Figure 34 illustrates the view of Figure 33, and wherein the anvil block of anvil assembly removes from circular stapler apparatus, and annular Separate type packing ring and protection component are attached on annular blade；
Figure 35 illustrates that the view of Figure 34, the newest anvil block have attempted to be attached to staple heavy cartridges assembly, and protects component This attachment is then hindered with annular release formula packing ring；
Figure 36 illustrates the close-up view in the broken circle of Figure 35, shows that new anvil block is attached to staple weight by obstruction in figure The protection component of loading assembly and annular release formula packing ring；
Figure 37 illustrates the flow process of an embodiment of the method for the separate type packing ring that blade locks onto circular stapler apparatus Figure；
Figure 38 illustrates the sectional view of the reusable circular stapler apparatus intercepting along Fig. 1, and wherein anvil assembly is arranged Away from the open position of housing outside percussion district, and firing trigger is in the pre-cock of locking；
Figure 38 A illustrates close-up view, it is shown that pass between firing trigger and trigger shaft under the assembled state of Figure 17 C System；
Figure 39 illustrates the fragmentary, perspective view of the sectional view of Figure 38；
Figure 40 illustrates the sectional view of the line 40-40 intercepting along Figure 38；
Figure 41 illustrates the sectional view of the reusable circular stapler apparatus intercepting along Fig. 1, and wherein anvil assembly is arranged The closed position adjacent with housing in percussion district, and firing trigger is in the pre-cock preparing percussion of unblock；
Figure 42 illustrates the fragmentary, perspective view of the sectional view of Figure 41；
Figure 43 illustrates the sectional view of the line 43-43 intercepting along Figure 41；
Figure 44 illustrates the sectional view of the reusable circular stapler apparatus intercepting along Fig. 1, and wherein anvil assembly is arranged The closed position adjacent with housing in percussion district, and firing trigger fired；
Figure 45 illustrates the fragmentary, perspective view of the sectional view of Figure 44；
Figure 46 illustrates the sectional view of the line 46-46 intercepting along Figure 44；And
Figure 47 A and 47B illustrates the sectional view being in the staple heavy cartridges assembly being attached to shank state, and wherein anvil block is respectively It is in open mode and closed mode.
Detailed description of the invention
With reference to Fig. 1, figure shows the novel operation circular stapler for removing tissue from patient according to the present invention Tool 100.Operation circular stapler apparatus 100 can be used to remove and includes internal hemorrhoid or the tissue of other kinds of tissue.Circular seams Clutch tool 100 is to such as United States Patent (USP) No.6, and the conventional circular suture instruments shown in 102,271 improves, this patent interior Hold and be incorporated by herein.Circular stapler apparatus 100 has staple heavy cartridges assembly 102, and this assembly can make The staple 104 (seeing Fig. 7 and 31) of annular array puts into bottom internal hemorrhoid the mucous layer at place, and can make mucosal tissue and interior Hemorrhoid are excised from the inwall of rectum or anus together.Generally, circular stapler apparatus 100 can be used to two sections of intestines and staple 104 (ginseng See Fig. 7 and 31) annular ring coincide together, simultaneously stopper cuts, as excrement passage in the central authorities from annular staple circle.
With reference to Fig. 1-2, circular stapler apparatus 100 includes ergonomics shaft assembly 106, has the nail bin group of housing 110 Part 108 and be detachably connected to the anvil assembly 112 of reciprocating anvil block adjusting rod 114.The staple weight of circular stapler apparatus Loading assembly 102 includes nail bin groupware 108 and anvil assembly 112.As Figure 1-3, circular stapler apparatus 100 also includes being formed The shank 116 of cavity 118.Anvil block control member 120 is positioned at the near-end of shank 116, and with anvil assembly 112 operationally phase Even so that the rotation of anvil block control member 120 makes anvil assembly 112 proximally or distal movement, is specifically dependent upon anvil block control The direction of rotation of component 120.Anvil block control member 120 can include anvil block Guan Bi knob or other kinds of anvil block control member. Circular stapler apparatus 100 is included on direction 124 from the rotatable firing trigger of shown open position to closed position 122, its In in closed position, in staple 104 (seeing Fig. 7 and 31) is launched into tissue (seeing Figure 31), and with staple heavy cartridges assembly The annular blade 126 (seeing Figure 31) of 102 cuts away excess tissue.Security-latch 128 is positioned on firing trigger 122, and at figure In be shown as preventing operating the bonding station upwards of firing trigger 122.When security-latch 128 disengage and on the 128a of direction to When inside moving downward, firing trigger 122 can rotate freely on direction 124 from open position to closed position.Shaft assembly 106 From shank 116 to remote extension, and utilize the connection of the threaded portion 132 (seeing Fig. 3) being attached to shank 116 in proximal end Nut 130 is detachably connected with shank 116.The relative attachment members 134 (seeing Fig. 4) of housing 110 is at shaft assembly 106 Far-end is detachably connected to receiver member 136 (seeing Fig. 3).Attachment members 134 includes the snap fastener that can bias, and receives Component 136 includes aperture.In other embodiments, attachment members 134 and receiver member 136 can include any kind of cooperation structure Part.
As in figure 2 it is shown, housing 110 includes having tubaeform drive part 140 and the appearance of outer tubular drive part 142 Face 138.Passage 144 includes the surface of shell hole extending to outer tubular drive part 142 from tubaeform drive part 140.Ring Shape staple holder 148 (seeing Fig. 4-5,7 and 31) is attached in the far-end of housing 110 so that the attachment of staple holder 148 Component 150 (seeing Fig. 4,7 and 31) is detachably connected to the receiver member 152 (seeing Fig. 4,7 and 31) of housing 110.Attachment Component 150 includes that snap-fastener is protruding, and receiver member 152 includes biasing snap-fastener.In other embodiments, attachment members 150 and connecing Component 152 of receiving can each include any kind of can attachment members.Ring-type staple holder 148 includes for keeping and launching seam The staple groove 154 (seeing Fig. 4,7 and 31) of the annular array of nail 104 (seeing Figure 31).
As shown in figs. 4-7, staple driver 156 is connected slidably by the key 158 (seeing Fig. 4) of staple driver 156 Receive ring-type staple holder 148, thus provide a kind of keyway 160 being detachably connected to ring-type staple holder 148 The structure of (seeing Fig. 4).Staple driver 156 is by the outer alignment slots 162 driving surface 164 of the annular of staple driver 156 Being movably mounted in housing 110, alignment slots 162 is movably mounted to the alignment flower of the annular interior shell surface 168 of housing 110 Key 166, to allow staple driver 156 lengthwise movement in housing 110, prevents staple driver 156 in housing 110 simultaneously Rotate.The outer driving surface 164 of staple driver 156 has tubaeform drive part 170 and outer tubular drive part 171. Alignment slots 162 and alignment spline 166 are disposed parallel to longitudinal axis 172 and the longitudinal direction of housing 110 of staple driver 156 Axis 174.In other embodiments, housing 110 and staple driver 156 can use allow lengthwise movement any quantity, The alignment member of type or configuration is in alignment with each other.
Staple driver 156 has the multiple finger pieces 176 in the staple groove 154 being received in staple holder 148.? Make staple driver 156 from pre-firing position (seeing Fig. 7) to firing position by starting firing trigger 122 (seeing Fig. 3) When putting (seeing Figure 31) motion, finger piece 176 is for engaging and drive multiple staple from the staple groove 154 of staple holder 148 104 (seeing Figure 31).As illustrated in figures 4 and 7, the flexible braking component 178 of staple driver 156 is detachably connected to housing The braking lug 180 of 110.This structure only applies scheduled volume when trigger shaft 282 (seeing Figure 44-46) on staple driver 156 Power time allow staple driver 156 lengthwise movement.Biased braking when being applied with required power, on staple driver 156 Component 178 curves inwardly, thus the braking lug 180 from housing 110 separates, to allow staple driver 156 to indulge to far-end To motion.In other embodiments, flexible braking component 178 and braking lug 180 can include other kinds of mating component.
Annular blade 126 is arranged in staple driver 156 far-end, and (sees figure by multiple blade mounting pins 182 5 and 31) attachment, blade mounting pins stretches out the same amount of installing hole 184 in the base portion 186 of annular blade 126.Annular Blade 126 has the blade openings 188 (seeing Fig. 5 and 31) in base portion 186.Open distal end 190 (the ginseng of annular blade 126 See Fig. 4,29 and 31) there is blade 192.The staple driver 156 preshot from Fig. 7 is made when utilizing firing trigger 122 (seeing Fig. 3) When sending out position distal movement to the firing position of Figure 31, annular blade 126 moves together with staple driver 156.When hitting Sending out trigger 122 when being fired, firing trigger 122 rotates to Figure 44's-46 from its position among Figure 38-43 on direction 124 Position, the trigger shaft 282 coordinated in forcing housing 110 moves against staple driver 156 on direction 392, and forces staple Driver is also moved in housing 110 on direction 392.This motion makes staple driver 156 and the annular blade of attachment thereof 126 fire to its firing position in Figure 31 and 44-46 from its pre-firing position among Fig. 7 and 38-43.At percussion seam During staple drivers 156, staple 104 is protected by the finger piece 176 of staple driver 156 from its staple shown in the figure 7 Pre-firing position in holder 148 is to its percussion of firing position leaving staple holder 148 shown in Figure 31.
Reciprocating anvil block adjusting rod 114 (seeing Fig. 4 and 6) is positioned at nail bin groupware 108, and is arranged to extend through seam Axle 194 (seeing Fig. 4 and 6) moving wherein in the annular of staple drivers 156.As shown in figs.3 a and 3b, reciprocating anvil block is adjusted The cross section of pole 114 changes in shape and size so that the part intercepted along hatching 3A-3A is round-shaped and has Having diameter 401 as shown in Figure 3A, the another part intercepted along hatching 3B-3B has parallel side wall, and the two sidewall is by such as The distance 402 that diameter group 401 shown in Fig. 3 B is little separates.As shown in Figure 4, annular in axle 194 in staple driver 156 along The direction longitudinal extension parallel with the longitudinal axis 172 of staple driver 156.Hole 196 extends in axle 194 in annular.Anvil block Annular inner surface 200 longitudinal extension of aligned surfaces 198 annularly interior axle 194.Anvil block aligned surfaces 198 includes that at least one is indulged To slit.In other embodiments, anvil block aligned surfaces 198 can include having various configuration any quantity or type right Neat surface.In annular, the outer surface 204 of axle 194 is spaced apart with another annular inner surface 206 of staple driver 156 so that Extend between outer surface 204 and the annular inner surface 206 of looping pit 208 axle 194 in annular.
With reference to Fig. 1,2,4-7, specifically referring to Fig. 8, anvil assembly 112 include anvil block 210, staple formation surface 212, annular Separate type packing ring 214 and metal shaft 216.Anvil block 210 is single type polymer molding parts, and it has and is integrally molded anvil block The anvil shaft 218 of basal surface 220.Anvil block 210 is made up of the polymer comprising glass-filled or carbon filled nylon.Implement at other In example, anvil block 210 can be made up of the composite being similar to, and this material has more than 15, the hot strength of 000psi, Yi Mian Overbending under the effect of power of organization.
Anvil base surface 220 is molded into staple formation surface 212 and metal shaft 216.In other embodiments, table at the bottom of anvil block Face 220 can use different attachment means to be attached to staple formation surface 212.Staple formation surface 212 is stainless by including Sheet metal or plate are made, and it is annular in shape, and includes staple formation recess.In other embodiments, staple becomes Type surface 212 maybe can be born the other materials of staple formation power and be made by aluminum.
In annular release formula packing ring 214 is pressure fitted into the cavity 222 of anvil base surface 220 and adjacent to anvil base surface 220.In other embodiments, annular release formula packing ring 214 can utilize different attachment means to be attached to anvil base surface 220 Cavity 222 in.Annular release formula packing ring 214 is made up of the plastics including ABS (acrylonitrile-butadiene-styrene (ABS)).At other In embodiment, annular release formula packing ring 214 can be made up of nylon, polyethylene or polypropylene.
Around the outer surface 224 of the end 226 that anvil shaft 218 is molded in metal shaft 216 so that metal shaft 216 extends to In the molded aperture 228 of anvil shaft 218.The molded aperture 228 of anvil shaft 218 terminates in anvil shaft 218, and does not extends through anvil The far-end on seat bottom surface 220.The inner surface 230 of anvil shaft 218 has receiver member 232, and receiver member 232 is molded into metal shaft The attachment members 234 of the outer surface 224 of the end 226 of 216.Receiver member 232 has molding circumferential rib (Figure 38), attachment members 234 have cannelure (Fig. 8).In other embodiments, receiver member 232 and attachment members 234 can include groove and screw thread, recessed Component and male member or other kinds of attachment means.In further embodiments, anvil shaft 218 can utilize different attached Connection mechanism is attached to metal shaft 216.Proximal slot 236 extends through metal shaft 216.The end 238 of metal shaft 216 includes stretching Groove 240 (seeing Fig. 2).Metal shaft 216 is made of stainless steel.In other embodiments, metal shaft 216 can be by different materials system Become.
When manufacturing anvil assembly 112, metal shaft 216 and staple formation surface 212 are prefabricated.Then, by prefabricated metal Axle 216 and prefabricated staple molded surface 212 insert in injection mold.Then, utilize in being molded in mould and form anvil block 210, from And anvil block 210 is molded into prefabricated metal axle 216 and prefabricated staple molded surface 212.In molding process, anvil base surface 220 molding and be molded into prefabricated staple molded surface 212, anvil shaft 218 molding simultaneously and be molded into preprocessing metal shaft Around the end 226 of 216.Then, annular release formula packing ring 214 is pressure fitted into the cavity 222 of molding anvil base surface 220 In.In other embodiments, manufacture process can change.
The engagement member 244 (seeing Fig. 2 and 6) of reciprocating anvil block adjusting rod 114 utilizes snap-fitted connection removably It is connected in the proximal slot 236 of metal shaft 216.The anvil block 210 of metal shaft 216 and attachment is operably connected to past by this structure The anvil block control member 120 of compound anvil block adjusting rod 114.In other embodiments, the joint structure of reciprocating anvil block adjusting rod 114 Part 244 can utilize other attachment means to be attached to metal shaft 216.Elongated slot 240 allows the end 238 of metal shaft 216 even Stretch during receiving the engagement member 244 of reciprocating anvil block adjusting rod 114.By circular stapler apparatus 100 at patient's body After upper use, abandon whole anvil assembly 112.In operation subsequently, use the new staple including new anvil assembly 112 Heavy cartridges assembly 102.
As shown in Figure 8, the aligned surfaces 246 that anvil shaft 218 is formed when being included in molding anvil block 210.Aligned surfaces 246 is wrapped Include at least one spline of the longitudinal axis 248 being aligned parallel to anvil shaft 218.Aligned surfaces 246 is along anvil shaft 218 Annular outer surface 252 extends to the bottom 254 of anvil shaft 218 from the top 250 of anvil shaft 218.The metal shaft of anvil assembly 112 216 do not include aligned surfaces.In other embodiments, aligned surfaces 246 can include any quantity or the class with various configuration The aligned surfaces of type.Such as, as shown in figure 12, only include that anvil shaft 218 is not attached to anvil assembly at anvil assembly 112 In the embodiment of the metal shaft 216 of 112, aligned surfaces 246 can be along the annular outer surface 252 of anvil shaft 218 from anvil shaft The top 250 of 218 extends and is parked at the middle part 256 of anvil shaft 218, and does not extends to the bottom 254 of anvil shaft 218.
Anvil assembly 112 can move to closed position (seeing Fig. 7), wherein, opening position from open position (seeing Fig. 6) Putting, staple formation surface 212 is provided remote from housing 110 to receive tissue, in closed position, and staple formation surface 212 quilt Be arranged adjacent to the housing 110 of nail bin groupware 108, with tissue is clipped in staple holder 148 and staple formation surface 212 it Between, then percussion staple driver 156 is with the tissue sewed up and cutting clips.This is due to reciprocating anvil block adjusting rod 114 The end 242 (seeing Fig. 2 and 6) of engagement member 244 extends in axle 194 in the annular of staple driver 156 and is connected to anvil In the groove 236 of the near-end 238 of the metal shaft 216 of holder assembly 112.Accordingly, because the reciprocating anvil block adjusting rod 114 being connected is transported Dynamic, the anvil shaft 218 being connected to metal shaft 216 is movably disposed in the interior axle 194 of annular of staple driver 156, to allow Move relative to staple driver 156 and housing 110 in the staple formation surface 212 of anvil assembly 112.
The aligned surfaces 246 (seeing Fig. 8) of anvil shaft 218 can be with the anvil block aligned surfaces 198 of staple driver 156 (seeing Fig. 4) coordinates, in order to rotate when anvil base surface 220 is in closed position (the seeing Fig. 7) of neighbouring nail bin groupware 108 Alignment staple formation surface 212, ground and staple holder 148.Initially, as shown in Figure 6, transport when reciprocating anvil block adjusting rod 114 Dynamic metal shaft 216 and the anvil shaft 218 of attachment, thus anvil base surface 220 is closed towards shown in Fig. 7 from open position shown in Fig. 6 During closed position motion, the aligned surfaces 246 (seeing Fig. 8) of the anvil shaft 218 not interior axle 194 with the annular of staple driver 156 Anvil block aligned surfaces 198 (seeing Fig. 4) coordinates, because anvil block aligned surfaces 198 will only be disposed adjacent to lack aligned surfaces Metal shaft 216.During this period, staple formation surface 212 will not be rotationally aligned with staple holder 148.But, such as Fig. 7 Shown in, when axle 194 in the aligned surfaces 246 of anvil shaft 218 touches the annular of staple driver 156, aligned surfaces 246 will be with In annular, the anvil block aligned surfaces 198 of axle 194 coordinates, thus when anvil base surface 220 enters the closedown of neighbouring nail bin groupware 108 During position, rotatably alignment staple formation surface 212 and staple holder 148.See Figure 33 A, neighbouring anvil block control member The labelling 120A of 120 visually indicates staple formation surface 212 (seeing Fig. 7) and the staple guider 148 (ginseng of anvil block 112 See Fig. 7) between clearance distance, in order to the feedback of the relevant tissue thickness compressed is provided for user.When apparatus is the most complete During Guan Bi, the near-end of reciprocating anvil block adjusting rod 114 injects the hole 120F in anvil block control member 120.
When anvil assembly 112 is in the closed position of Fig. 7, and circular stapler apparatus 100 by percussion by staple driver When the 156 pre-firing positions in the housing 110 that it is shown in the figure 7 move to its firing position shown in Figure 31, Staple 104 is driven to being close to anvil assembly by the finger piece 176 of staple driver 156 from the staple groove 154 of staple holder 148 The staple formation surface 212 of 112.The staple 104 of injection is configured to the staple shape of Guan Bi by staple formation surface 212, thus A part for tissue is stitched together.Meanwhile, annular blade 126 is driven into and is clipped on anvil block 210 by staple driver 156 Staple formation surface 212 and the surface of staple guider 148 between by compression tissue, thus be close to anvil assembly 112 Separate type packing ring 214 cutting tissue.
Fig. 9 illustrates flow chart 258, the method the flow diagrams illustrating the staple heavy cartridges assembly of alignment circular stapler apparatus An embodiment.In step 260, it is provided that the staple heavy cartridges assembly of circular stapler apparatus.The circular stapler provided Apparatus includes housing, is attached to the staple holder of housing, staple driver, annular blade and anvil block.In step 262, Staple driver is movably arranged in housing with alignment configuration, and the attachment members of staple driver is connected to the receiving of housing Component, to prevent from moving past in housing with trigger shaft staple driver before staple driver applies the power of scheduled volume Certain point.In the step 264, the anvil base surface of anvil block is transported towards adjacent to the closed position of housing from the open position away from housing Dynamic, wherein at open position, the staple formation surface of anvil block not with the staple holder rotation into alignment being attached to housing.In step In 266, the aligned surfaces of anvil block coordinates with the anvil block aligned surfaces of staple driver, in order to be in neighbouring shell in anvil base surface Staple formation surface and the staple holder of anvil block it is rotationally aligned with during the closed position of body.The aligned surfaces of anvil block includes at least One spline, the anvil block aligned surfaces of staple driver includes at least one slit.In other embodiments, the alignment table of anvil block The quantity of anvil block aligned surfaces of face and driver, type can change with configuration.
One or more embodiments of the disclosure can solve to before this operation circular stapler apparatus in align relevant One or more problems.Such as, utilize the disclosure one or more embodiments can directly anvil block and staple driver it Between provide correct alignment, without needing between anvil block with housing first to align as in existing apparatus and at seam Between staple drivers with housing second is alignd.The method of this direct alignment driver and anvil block reduces alignment error May, and produce the staple shape of improvement.
Figure 10 illustrates and includes anvil block 210A, staple formation surface 212A, annular release formula packing ring 214A and metal shaft 216A The exploded view of another embodiment of anvil assembly 112A.Anvil block 210A is the anvil block having and being molded into anvil base surface 220A The single type polymer molding parts of axle 218A.Anvil block 210A is made up of the polymer comprising glass-filled or carbon filled nylon. In other embodiments, anvil block 210A can be made up of the composite being similar to, and this material has more than 15, the stretching of 000psi Intensity, in order to avoid overbending under the effect of power of organization.
Metal shaft 216A extends through molded aperture 228A, and molded aperture 228A extends through anvil shaft 218A and anvil base surface 220A.Outside one end 226A of metal shaft 216A stretches out molded aperture 228A and against the top 268 of anvil base surface 220A.Metal The end 226A of axle 216A has the diameter 270 that the diameter 272 than molded aperture 228A is big.The other end 238A of metal shaft 216A stretches Go out outside molded aperture 228A of anvil shaft 218A.Metal shaft 216A includes the receiver member (being blocked) being attached to anvil shaft 218A Attachment members (being blocked).Attachment members includes that screw thread, receiver member include groove.In other embodiments, attachment members Male member and female member or other kinds of attachment means can be included with receiver member.In further embodiments, metal shaft 216A can utilize different attachment means to be attached to anvil shaft 218A.Groove 236A prolongs in the near-end 238A of metal shaft 216A Stretch.The end 238A of metal shaft 216A also includes elongated slot 240A.Metal shaft 216A is by including the stainless metal system of heat treatment Become.In other embodiments, metal shaft 216A can be made up of other steel.
Anvil base surface 220A is molded into staple formation surface 212A.In other embodiments, anvil base surface 220A can Different attachment means is used to be attached to staple formation surface 212A.Staple formation surface 212A is by including austenitic stainless steel Sheet metal is made, and it is annular in shape, and includes staple formation recess.In other embodiments, staple formation table Face 212A can be made up of other metals, rustless steel, the thin plate of aluminum or plate.
In annular release formula packing ring 214A is pressure fitted into the cavity 222A of anvil base surface 220A and adjacent to table at the bottom of anvil block Face 220A.In other embodiments, annular release formula packing ring 214A can utilize different attachment means to be attached to table at the bottom of anvil block In the cavity 222A of face 220A.Annular release formula packing ring 214A is by the plastics system including ABS (acrylonitrile-butadiene-styrene (ABS)) Become.In other embodiments, annular release formula packing ring 214A can be made up of nylon, polyethylene or polypropylene.
When manufacturing anvil assembly 112A, staple formation surface 212A is prefabricated.Then, by prefabricated staple molded surface 212A inserts in injection mold.Then, utilize mould to form anvil block 210A in mould, so that anvil block 210A to be molded into staple Type surface 212A.In molding process, anvil base surface 220A molding and be molded into staple formation surface 212A.Then, will Annular release formula packing ring 214A is pressure fitted in the cavity 222A of molding anvil base surface 220A.In molding anvil base surface After 220A, the end 238A of prefabricated metal axle 216A extends in molded aperture 228A in anvil base surface 220A and leaves anvil Molded aperture 228A in seat axle 218A, so that the end 226A of metal shaft 216A is against the top 268 of anvil base surface 220A. User can carry out this step before the use.When the end 238A of prefabricated metal axle 216A extends to and leaves anvil block 210A In molded aperture 228A time, owing to the attachment members (being blocked) of metal shaft 216A (is hidden with the receiver member of anvil shaft 218A Gear) coordinate, metal shaft 216A is detachably connected to anvil shaft 218A.In other embodiments, manufacture process can change.
As shown in figure 11, the engagement member 244 of reciprocating anvil block adjusting rod 114 utilizes snap-fitted connection removably to connect Receiving in the proximal slot 236A of metal shaft 216A, the anvil block 210A of metal shaft 216A and attachment is passed through by the most snap-fitted connection Reciprocating anvil block adjusting rod 114 is operably connected to anvil block control member 120.In other embodiments, reciprocating anvil block is adjusted The engagement member 244 of pole 114 can utilize other attachment means to be attached to metal shaft 216A.Elongated slot 240A allows metal shaft The end 238A of 216A stretches during the engagement member 244 being connected to reciprocating anvil block adjusting rod 114.By circular seams After clutch tool 100 uses with patient, by by the attachment members of metal shaft 216A (being blocked) from anvil shaft 218A Receiver member (being blocked) is upper to be separated, and can remove metal shaft 216A, can abandon anvil block 210A from anvil block 210A, can be right Metal shaft 216A is sterilized, and above-mentioned identical process can be utilized metal shaft 216A to be attached to new anvil block, to allow metal shaft 216A combines with new anvil block and new nail bin groupware and reuses with another patient.
As shown in figs. 10-11, anvil shaft 210A be included in molding anvil block 210A time due to mould the aligned surfaces of molding 246A.Aligned surfaces 246A includes at least one spline being aligned parallel to the longitudinal axis 248A of anvil shaft 218A.Alignment Surface 246A extends to anvil shaft 218A along the annular outer surface 252A of anvil shaft 218A from the top 250A of anvil shaft 218A Bottom 254A.Metal shaft 216A of anvil assembly 112A does not include aligned surfaces.In other embodiments, aligned surfaces 246A Any quantity or the aligned surfaces of type with various configuration can be included.
Figure 12 illustrates and includes anvil block 210B, staple formation surface 212B and the anvil assembly of annular release formula packing ring 214B The exploded view of another embodiment of 112B.Anvil block 210B is with anvil shaft 218B being molded into anvil base surface 220B Part formula polymer molding parts.Anvil block 210B is made up of the polymer comprising glass-filled or carbon filled nylon.Implement at other In example, anvil block 210B can be made up of the composite being similar to, and this material has more than 15, the hot strength of 000psi, in order to avoid Overbending under the effect of power of organization.Proximal slot 236B extends in anvil shaft 218B.Anvil shaft 218B includes elongated slot 240B。
Anvil base surface 220B is molded into staple formation surface 212B.In other embodiments, anvil base surface 220B Different attachment means can be used to be attached to staple formation surface 212B.Staple formation surface 212B is by including austenitic stainless steel Metal make, it is annular in shape, and includes staple formation recess.In other embodiments, staple formation surface 212B can be made up of other metals, rustless steel, the thin plate of aluminum or plate.
In annular release formula packing ring 214B is pressure fitted into the cavity 222B of anvil base surface 220B and adjacent to table at the bottom of anvil block Face 220B.In other embodiments, annular release formula packing ring 214B can utilize different attachment means to be attached to table at the bottom of anvil block In the cavity 222B of face 220B.Annular release formula packing ring 214B is by the plastics system including ABS (acrylonitrile-butadiene-styrene (ABS)) Become.In other embodiments, annular release formula packing ring 214B can be made from a different material.
When manufacturing anvil assembly 112B, staple formation surface 212B is prefabricated.Then, by prefabricated staple molded surface 212B inserts in injection mold.Then, utilize mould to form anvil block 210B in mould, so that anvil block 210B to be molded into staple Type surface 212B.In molding process, anvil base surface 220B molding and be molded into staple formation surface 212B.Meanwhile, bag Anvil shaft 218B including anvil stem attachment part is integrally molded anvil base surface 220B.Then, by annular release formula pad Circle 214B is pressure fitted in the cavity 222B of molding anvil base surface 220B.In other embodiments, manufacture process can become Change.
As shown in figure 13, the engagement member 244 of reciprocating anvil block adjusting rod 114 utilizes snap-fitted connection removably to connect Receiving in the proximal slot 236B of anvil shaft 218B, anvil shaft 218B of anvil block 210B is passed through reciprocating by the most snap-fitted connection Anvil block adjusting rod 114 is operably connected to anvil block control member 120.In other embodiments, reciprocating anvil block adjusting rod 114 Engagement member 244 other attachment means can be utilized to be attached to anvil shaft 218B.Elongated slot 240B allows anvil shaft 218B to exist Stretch during being connected to the engagement member 244 of reciprocating anvil block adjusting rod 114.By circular stapler apparatus 100 patient After using with it, anvil block 210B can be abandoned, and new anvil block and circular stapler apparatus 100 can be used at different patient's bodies On carry out another operation.
As illustrated by figs. 12-13, aligned surfaces 246B of molding when anvil shaft 218B is included in molding anvil block 210B.Alignment table Face 246B includes at least one spline being aligned parallel to the longitudinal axis 248B of anvil shaft 218B.Aligned surfaces 246B along The annular outer surface 252B of anvil shaft 218B extends from the top 250B of anvil shaft 218B, and is parked in the middle part of anvil shaft 218A At 256B, and do not extend to the bottom 254B of anvil shaft 218A.In other embodiments, aligned surfaces 246B can include having not Any quantity of isomorphism type or the aligned surfaces of type.
Figure 14 illustrates flow chart 274, shows an embodiment of the method manufacturing anvil assembly in figure.In step 276 In, the prefabricated staple molded surface can being made up of metal or other materials is arranged in mould.In step 278, by inciting somebody to action The prefabricated staple molded surface that anvil block is molded in mould is to form anvil assembly so that the anvil block moulded has from the bottom of anvil block The anvil shaft that surface extends.Anvil block can be molded as single type by polymer (nylon that such as glass-filled or carbon are filled).At it In his embodiment, anvil block can be molded by other materials.In one embodiment, step 278 may also include anvil shaft mould Make at least one aligned surfaces or another type of aligned surfaces including that there is alignment spline.In another embodiment, Step 278 may also include molding anvil assembly, thus anvil shaft is molded into be arranged in step 276 in mould can be by gold The prefabricated axle that genus or other materials are made.In yet another embodiment, in subsequent step, can be after molding anvil block, will The prefabricated axle can being made up of metal or other materials is attached to mould the anvil shaft of anvil assembly.In step 280, pressure is utilized Separate type packing ring is attached to the anvil base surface of the anvil assembly of molding by cooperation or other attachment means.Separate type packing ring is permissible It is annular or another kind of shape, can be made up of the plastics including ABS (acrylonitrile-butadiene-styrene (ABS)), or can be by other The material of type is made.In other embodiments, the one or more steps of the method can change.
One or more embodiments of the disclosure can solve the one or more problems relevant to anvil assembly before this.Example As, utilize one or more embodiments of the disclosure can provide a kind of anvil assembly, this anvil assembly can use existing anvil block The cost manufacture of 1/3rd of assembly.
As Figure 1-3, circular stapler apparatus 100 include shank 116, reciprocating anvil block adjusting rod 114, trigger shaft 282, Shaft assembly 106 that carrier cover 284 and shank 116 are detachably connected, nail bin groupware 108 and with reciprocating anvil block adjusting rod The anvil assembly 112 that 114 are detachably connected.Shank 116 is formed receives trigger shaft 282 and reciprocating anvil block adjusting rod 114 Cavity 118.Reciprocating anvil block adjusting rod 114 has the engagement member 244 at the end 242 of reciprocating anvil block adjusting rod 114 With threaded adjustment means 286, threaded adjustment means 286 controls with anvil block in the proximal end of reciprocating anvil block adjusting rod 114 Component 120 is detachably connected.
Trigger shaft 282 is used for reciprocating anvil block adjusting rod 114 is stablized and is fixed in shank 116.Trigger shaft 282 is formed Pair of engaging groove 288 and 290, and at trigger shaft 282 far-end, there is joint axle 292.Engaging groove 288 preferably becomes with 290 Type is at the opposite side of trigger shaft 282.Firing trigger 122 includes upper end 294, and upper end 294 engages with engaging groove 288 and 290 and incites somebody to action Trigger shaft 282 and reciprocating anvil block adjusting rod 114 are removably attached in the cavity 118 of shank 116.Alternatively select Selecting, engaging groove 288 and 290 can replace to the most any removably connecting.Preferably, when trigger shaft 282 He When cavity 118 put into by reciprocating anvil block adjusting rod 114, each several part of the upper end 294 of firing trigger 122 extends respectively into joint One of groove 288 and 290, and trigger shaft 282 and reciprocating anvil block adjusting rod 114 are removably attached in cavity 118. By trigger shaft 282 and reciprocating anvil block adjusting rod 114 are removably attached in cavity 118, engaging groove 288 and 290 with And the upper end 294 of firing trigger 122 allows trigger shaft 282 and reciprocating anvil block adjusting rod 114 are readily integrated into and take out chamber Body 118, thus easily they are repaired or replaced.The design of cavity 118 and the feature of above-mentioned parts make them permit Permitted user clearly to observe when putting it into correct position and orientation.It is incorrect that this structure is also prevented from user Ground assembles apparatus.
Engage axle 292 and form opening 296, receive the end 242 of reciprocating anvil block adjusting rod 114 by this opening and engage Component 244.Reciprocating anvil block adjusting rod 114 is received to contribute to making reciprocating anvil block adjusting rod by engaging the opening 296 of axle 292 Reciprocating anvil block adjusting rod 114 between two parties and is alignd in shank 116 in nail bin groupware 108 by 114.Nail bin groupware 108 (sees Fig. 1 and 2) far-end (seeing Fig. 3) with shaft assembly 106 is detachably connected.The engagement member of reciprocating anvil block adjusting rod 114 The end 242 of 244 extends in housing 110 (seeing Fig. 2) and passes through, and utilizes snap-fitted connection to be detachably connected to The proximal slot 236 (seeing Fig. 2) of the metal shaft 216 of anvil assembly 112.
Seeing Fig. 3, carrier cover 284 slides above at shank 116, and by trigger shaft 282 and reciprocating anvil block adjusting rod 114 A part cover in cavity 118.Preferably, carrier cover 284 forms opening 298, is received the band of shank 116 by this opening Threaded portion 132.Opening 298 is preferably U-shaped, and is formed on the downside 300 of carrier cover 284, so that working as carrier cover 284 when shank 116 slides above, and the adjacent part 302 of carrier cover 284 compresses a part for shank 116, and this shows carrier cover Above a part for 284 trigger shafts 282 being correctly positioned in cavity 118 and reciprocating anvil block adjusting rod 114.By permitting Being permitted carrier cover 284 to slide above at shank 116, trigger shaft 282 and reciprocating anvil block adjusting rod 114 are protected by carrier cover 284 In cavity 118, and allow easily they to be repaired or replaced.
Shaft assembly 106 is detachably connected with shank 116 in proximal end, and (sees with nail bin groupware 108 at far-end Fig. 1) it is detachably connected.As used herein, term " detachably " refers to that first component or component are designed to do not damaging separately It is disengaged in the case of one parts or component or separates.It addition, as used herein, term " detachably connected " or " detachable Fix " refer to the first component is attached or secured to second component in some way, wherein the two component is designed to In the case of not damaging either member disconnected from each other or separately.This allow user by two components in the case of not damaging that This separately or disengages, in order to user can keep in repair the two component.Detachably connected can include snap-fitted connection, rub (such as shackle-type is tight to wipe joint connection (including the component being frictionally engaged with each other), threaded, magnetic connection or mechanical connection Firmware).
See Fig. 3, it is preferable that shaft assembly 106 includes the attaching nut 130 with female thread 304, female thread 304 and handle Threaded portion 132 in portion 116 is detachably connected.Alternatively, attaching nut 130 can replace to such as this Any described in literary composition removably connects.Once being detachably connected with shank 116, shaft assembly 106 is just by detachable for carrier cover 284 Be fixed to shank 116, to allow to be easily removed and keep in repair circular stapler apparatus 100 and parts thereof, such as, shaft assembly 106, Carrier cover 284, shank 116, trigger shaft 282 and reciprocating anvil block adjusting rod 114.
By detachably connected shaft assembly 106 and shank 116, by by trigger shaft 282 and reciprocating anvil block adjusting rod 114 are removably attached in cavity 118, by allowing carrier cover 284 to slide above at shank 116, by removably connecting It is access to compound anvil block adjusting rod 114 and anvil block control member 120, by detachably connected shaft assembly 106 and shank 116, or Person passes through detachably connected anvil assembly 112 (seeing Fig. 1) and reciprocating anvil block adjusting rod 114, circular stapler apparatus 100 Assembly and disassembly become to be more prone to, and allow maintenance and safeguard the various parts of circular stapler apparatus 100.
With reference to Figure 15 A and 15B, during assembling circular stapler apparatus 100, anvil block control member 120 and reciprocating anvil Seat adjusting rod 114 is detachably connected.Preferably, by the anvil block control member 120 in rotating band threaded adjustment member 286, By anvil block control member 120 in the proximal end of reciprocating anvil block adjusting rod 114 and threaded adjustment means 286 removably phase Even.Typically, rotary anvil control member 120 counterclockwise opens apparatus, and turn clockwise closedown apparatus.
Then, with reference to Figure 16 A and 16B, a part for anvil block control member 120 and the one of reciprocating anvil block adjusting rod 114 Part is removably attached in the cavity 118 of shank 116.Preferably, cavity 118 forms breach 306, this breach and anvil block control The part cooperation of component 120 processed, in order to anvil block control member 120 and reciprocating anvil block adjusting rod 114 are removably secured In cavity 118.Alternatively, breach and protruding relation can be overturned.Once by reciprocating anvil block adjusting rod 114 At the 118A of position, put into cavity 118, parallel planar wall 114B and 114C (seeing Figure 15 B) of adjacent cavity 118 just with Certain mode is connected, in order to rotate allowing to prevent while lengthwise movement reciprocating anvil block adjusting rod 114 from doing relative to shank Motion.
With reference to Figure 17 A, 17B and 17C, the end 242 of reciprocating anvil block adjusting rod 114 and engagement member 244 are by percussion The opening 296 engaging axle 292 of bar 282 is accepted, and then, the engaging groove 288,290 of trigger shaft 282 is arranged on percussion and pulls Then surrounded above the upper end 294 of machine 122, thus trigger shaft 282, reciprocating anvil block adjusting rod 114 and anvil block are controlled Component 120 is removably attached in cavity 118.
With reference to Figure 18 A and 18B, carrier cover 284 then slides above and by trigger shaft 282 and reciprocating anvil at shank 116 A part for seat adjusting rod 114 covers in cavity 118.Preferably, the threaded portion 132 of shank 116 is connect by opening 298 It is contained in carrier cover 284, and carrier cover 284 is slided, until the adjacent part 302 of carrier cover 284 compresses the portion of shank 116 Divide 132a, show to be dimensioned correctly carrier cover 284.
With reference to Figure 19 A, 19B and 19C, reciprocating anvil block adjusting rod 114 is passed through and is put into shaft assembly 106, and axle Assembly 106 is detachably connected with shank 116.Preferably, shaft assembly 106 includes the attaching nut 130 with female thread 304, Female thread 304 is detachably connected with the threaded portion 132 on shank 116.Shaft assembly 106 is by the most solid for carrier cover 284 Surely shank 116 is arrived.
Then, with reference to Fig. 2, nail bin groupware 108 is detachably connected to shaft assembly 106, and reciprocating anvil block adjusting rod The end 242 of 114 extends through the central shaft formed in nail bin groupware 108.Finally, anvil assembly 112 is by reciprocating anvil The proximal slot 236 of the engagement member 244 of seat adjusting rod 114 and the metal shaft 216 of anvil assembly 112 regulates with reciprocating anvil block Bar 114 is detachably connected.
With reference to Figure 20 and 21, in one embodiment, it is provided that the circular stapler apparatus 100A of bending, this apparatus includes tool There are the nail bin groupware 108A of housing 110A, anvil assembly 112C (as it has been described above, it is attached to bending past of anvil block opening mechanism Compound anvil block adjusting rod 114A is to prevent from unexpected removing anvil assembly 112C) anvil block adjusting rod 114A reciprocating with flexibility be removable The carrier cover 284A that the trigger shaft 282A and shank 116A of the bending being connected with unloading is detachably connected is reciprocating with bending Control member 120A that anvil block adjusting rod 114A is detachably connected by threaded adjustment means 286A and have and pass through spiral shell The ergonomic bending axis assembly 106A of the attaching nut 130A that stricture of vagina part 132A and shank 116A are detachably connected.Curved Bent circular stapler apparatus 100A includes bending part, such as, and flexible reciprocating anvil block adjusting rod 114A, bending trigger shaft 282A With bending axis assembly 106A, with contribute to insert mammal body cavity in.
By having the parts being removably connected with each other, circular stapler apparatus 100 or the circular stapler apparatus of bending 100A provides a kind of reusable suture instruments with open architecture, and this structure uses the load with U-shaped opening 298 Body lid 284 and the carrier cover 284A with U-shaped opening 298A, to allow to assemble optional feature (example on substantial transverse direction Such as reciprocating anvil block adjusting rod 114,114A and shaft assembly 106,106A).Laterally assemble and make assembling be prone to observe, and shorten group ETL estimated time of loading and the convenience of increase assembly and disassembly.Therefore, have open package assembly circular stapler apparatus 100 or bending The assembling required time of circular stapler apparatus 100A is usually less than 1 minute.It addition, open architecture allows needing placing component The local feature that there is connection.Additionally, the parts being releasably attached by offer, can easily assembly and disassembly Circular stapler apparatus 100 or 100A, to allow after usage circular stapler apparatus 100 or 100A is cleaned and is sterilized.
With reference to Figure 22-28, in one embodiment, it is provided that a kind of circular stapler apparatus 100D, this apparatus includes having The nail bin groupware 108D of housing 110D, anvil assembly 112D are (as it has been described above, it is attached to the reciprocating anvil block of anvil block opening mechanism Adjusting rod 114D is to prevent from unexpected removing anvil assembly 112D) with hitting that reciprocating anvil block adjusting rod 114D is detachably connected Send out bar 282D, the carrier cover 284D being connected with shank 116D, the control member 120D being connected with reciprocating anvil block adjusting rod 114D, And be there is the shaft assembly 106D of the attaching nut 130D being connected by threaded portion 132D and shank 116D.Preferably, circular Suture instruments 100D is the circular stapler apparatus (as shown in apparatus 100D) of bending, and includes bending part, such as, and bending Reciprocating anvil block adjusting rod 114D, bending trigger shaft 282D and ergonomics bending axis assembly 106D, feed to contribute to inserting In the body cavity of breast animal.But, circular stapler apparatus 100D needs not to be the circular stapler apparatus of bending (such as circular stapler apparatus Shown in 100D), it is also possible to being any kind of circular stapler apparatus, the most straight circular stapler apparatus is (such as circular seams Shown in clutch tool 100), and there are the most straight parts, such as, the most straight reciprocating anvil block adjusting rod 114D, phase To more straight trigger shaft 282D and the most straight shaft assembly 106D.
Reciprocating anvil block adjusting rod 114D is included in the first joint at the end 242D of reciprocating anvil block adjusting rod 114D Component 244D and threaded adjustment means 286D at the base portion 402D of reciprocating anvil block adjusting rod 114D.Preferably, back and forth Formula anvil block adjusting rod 114D is included in the base portion 402D of end, the engagement member 244D at opposite end and flexible tension Band 400D, tension band 400D can be flexible and bending, and are connected with engagement member 244D by base portion 402D.With reference to Figure 22 With 23, trigger shaft 282D is flexibly connected with firing trigger 122D at the first end 430D, and by the second end 432D Two engagement member 416D are flexibly connected with nail bin groupware 108D.The first composition surface 406D is formed with reference to Figure 28, trigger shaft 282D, First composition surface 406D is in the face of the corresponding second composition surface 408D formed on reciprocating anvil block adjusting rod 114D.Preferably Ground, tension band 400D forms the second composition surface 408D, the second composition surface 408D the first joint on trigger shaft 282D Surface 406D.
Circular stapler apparatus 100D also includes that friction reduces component 420D, and friction reduces component 420D and is positioned at the first table of joint Between face 406D and the second composition surface 408D, to reduce rubbing between reciprocating anvil block adjusting rod 114D and trigger shaft 282D Wipe.When shank 116D engages firing trigger 122D and firing trigger 122D percussion, reciprocating anvil block adjusting rod 114D and hitting Send out and move between bar 282D, cause trigger shaft 282D move towards nail bin groupware 108D and engage, and from nail bin group Part 108D launches staple.When starting control member 120D, between reciprocating anvil block adjusting rod 114D and trigger shaft 282D Also move, cause reciprocating anvil block adjusting rod 114D and the anvil of the end 242D being connected to reciprocating anvil block adjusting rod 114D Holder assembly 112D moves towards or away from nail bin groupware 108D, in order between regulation nail bin groupware 108D and anvil assembly 112D Distance.Any one motion between reciprocating anvil block adjusting rod 114D and trigger shaft 282D results in reciprocating anvil block adjusting rod 114D and trigger shaft 282D is slidably engaged, and produces friction between reciprocating anvil block adjusting rod 114D and trigger shaft 282D. As used herein, term " is slidably engaged " and refers to the most just move in a surface, protects between the two surface simultaneously Maintain an equal level sliding continuous contact.In the circular stapler apparatus 100D of bending, reciprocating anvil block adjusting rod 114D and trigger shaft 282D Between friction generally can be than the most straight high 20-40% of circular stapler apparatus 100.In one embodiment, circular seams The configuration of clutch tool 100D makes tension band 400D apply contact force on trigger shaft 282D, thus increases trigger shaft 282D and past Friction between compound anvil block adjusting rod 114D.By arranging between the first composition surface 406D and the second composition surface 408D Friction reduces component 420D, can reduce the friction between reciprocating anvil block adjusting rod 114D and trigger shaft 282D.There is also it His region, in these regions, produces between other parts of trigger shaft 282D and shank 116D during percussion apparatus and rubs Wiping power.By the surface configuration in groove 288D with 290D of trigger shaft 282D being become predetermined angle, can be reduced these and rub Wiping power.As shown in fig. 38 a, inclined surface 288F can be oriented to deviate vertical direction 5 degree to 15 degree.This causes promoting trigger shaft The power of 282D reduces 10-20%.
Friction reduce component 420D can be can be used to reduce between two components (the most reciprocating anvil block adjusting rod 114D and Between trigger shaft 282D) any machinery of friction or synthetics.Specifically, friction reduces component 420D at two structures The coefficientoffrictionμ of reduction is provided between partReduce, this value less than do not rub between two components reduction component time two components it Between exist normal friction coefficient μNormally.Preferably, friction reduction component 420D provides the coefficientoffrictionμ of reductionReduce, this value ratio The normal friction coefficient μ existed between two componentsNormallyLittle at least 20%, the least at least 40%.
For rubbing, the synthetics reducing component 420D comprises the steps that solid coating (including graphite) or polymer coating (such as polytetrafluoroethylene).For rub reduce component 420D synthetics can as be adhered to the first composition surface 406D and The coating of the one or both in the second composition surface 408D applies.For rubbing, the synthetics reducing component 420D also may be used To apply as coating, so that the intermediate member of trapping is freely-movable between two composition surface 406D and 408D.Subtract for friction The machinery of primary structural component 420D includes any machinery that can reduce the friction between a pair surface, such as ball or roller Bearing.Friction reduces component 420D can be with the one or both phase in reciprocating anvil block adjusting rod 114D and trigger shaft 282D Even.Friction reduces component 402D and is designed in cleaning and keeps in repair shank will not wipe or degrade during reusing.
With reference to Figure 25-27, in one embodiment, friction reduction component 420D includes that roller 404D, roller 404D utilize pin 412D is connected with trigger shaft 282D, and is arranged in the cavity 410D formed in trigger shaft 282D.Preferably, pin 412D sets Put in the hole 414D formed by trigger shaft 282D.Preferably, more than one roller 404D is connected with trigger shaft 282D, and such as three Individual roller 404D.In one embodiment, hole 414D forms circular open, arranges pin 412D by this opening, as shown in figure 26, makes Must sell 412D can small movements.In one embodiment, hole 414D forms the opening of substantially elliptical, and pin 412D is by this opening Setting also can be with lateral movement, as shown in figure 28 so that sell 412D end 430D, 432D towards or away from trigger shaft 282D In up and down motion than pin 412D of any one lateral movement (not towards or away from end 430D, 432D of trigger shaft 282D Any one) amplitude is bigger, to allow the degree of freedom bigger than previous embodiment.
Figure 29 illustrates the perspective view of the annular blade 126 of the nail bin groupware 108 of the circular stapler apparatus 100 of Fig. 4.Such as Figure 29 Shown in, annular blade 126 includes circular blade 192 and separate type washer attachment member 308.There is circular blade 192 and separate The annular blade 126 of formula washer attachment member 308 is made up of metal (such as rustless steel).In other embodiments, annular blade The 126 any materials that can enough carried out by hardness cutting are made.Separate type washer attachment member 308 includes multiple spaced apart dividing Keeping barb from formula packing ring, these barbs extend at the position 310 of the annular blade 126 of neighbouring blade 192.Separate type packing ring Attachment members 308 extends internally with non-parallel angle 312 relative to blade 192.Non-parallel angle 312 can be at 56 to 60 degree In the range of.In other embodiments, in the range of non-parallel angle 312 can be spent 30 to 60.In further embodiments, divide Can be relative to annular blade 126 at material, quantity, shape, size, position, direction or configuration from formula washer attachment member 308 Upper change.Such as, in other embodiments, separate type washer attachment member 308 can include snap-fastener, impression or other kinds of attached Connection member.
Fig. 6 illustrates the anvil base surface of the anvil assembly 112 of the staple heavy cartridges assembly 102 of circular stapler apparatus 100 220, this surface is in an open position relative to housing 110 and disconnected, and staple driver 156 and the endless knife of attachment Sheet 126 is in the pre-firing position retracting in housing 110.Annular release formula packing ring 214 is pressure fitted into the anvil block of anvil block 210 In the cavity 222 of basal surface 220.Utilize the hook 316 annular release formula pad in the cavity 222 being arranged on anvil base surface 220 It is attached protection component 314 on the top 318 of circle 214.
Figure 30 illustrates the close-up view being attached to protect the annular release formula packing ring 214 of component 314.Protection component 314 Including the ring protection cap being made up of red polycarbonate.In other embodiments, protection component 314 can material, quantity, Change on shape, size, position, color or configuration, and different attachment means can be used to be attached to annular release formula pad Circle 214.In further embodiments, protection component 314 can not be used, and annular release formula packing ring 214 can not have It is pressure fitted in the cavity 222 of anvil base surface 220 in the case of protection component 314.
Fig. 7 shows, the anvil base surface 220 of anvil assembly 112 moves to closedown adjacent thereto relative to housing 110 Position, and staple driver 156 and attachment annular blade 126 be still within retracting to and between annular release formula packing ring 214 Pre-firing position in the housing 110 separated.At this pre-firing position, the flexible braking component 178 of staple driver 156 is removable Be connected to the braking lug 180 of housing 110 with unloading, this connection prevents staple driver 156 before applying the power of scheduled volume Motion.In other embodiments, flexible braking component 178 and braking lug 180 can include different types of mating component.
Figure 31 illustrates that the annular blade 126 of staple driver 156 and attachment is fired, makes staple driver 156 relative Moving to firing position in housing 110 from pre-firing position, in this position, the blade 192 of annular blade 126 enters and cuts Cutting annular release formula packing ring 214, the anvil base surface 220 of anvil assembly 112 is in the closed position simultaneously.During percussion, The flexible braking component 178 of staple driver 156 discharges from the braking lug 180 of housing 110, to allow staple driver 156 Pass through certain point 320 relative to housing 110.
Figure 32 illustrates closely regarding of the blade 192 of the annular blade 126 of Figure 31 of cutting annular separate type packing ring 214 Figure.Blade 192 cutting is arranged on the web 320 between the spaced apart wall of annular release formula packing ring 214 322 and 324.When this occurs During kind of situation, it is spaced apart that separate type washer attachment member 308 is fixedly attached to one of them of annular release formula packing ring 214 Wall 322, locks onto annular release formula packing ring 214 with protection component 314 (seeing Figure 31) by annular blade 126, wherein protects structure Part 314 remains attached to the top 318 (ginseng of the annular release formula packing ring 214 being arranged in the cavity 222 of anvil base surface 220 See Figure 31).
Figure 33 shows, the annular blade 126 at staple driver 156 and attachment is fired to cut annular separate type packing ring After 214, the anvil base surface 220 of anvil assembly 112 has returned the open position away from housing 110.Annular release formula packing ring 214 still due to annular release formula washer attachment member 308 above annular blade 126 latched position, and protect component 314 tops 318 remaining attached to annular release formula packing ring 214 are also used as the protection above the blade 192 of annular blade 126 Property barrier.Protection component 314 prevents the blade 192 of annular blade 126 from having fired at annular blade 126, and generation afterwards is unexpected cuts Cut.At least one in annular release formula packing ring 214 or protection component 314 includes visual detector 326, and this labelling is as anti- The annular blade 126 of model measure instruction staple driver 156 and attachment is fired.Visual detector 326 has and circular seams The first color that second color of the housing 110 of clutch tool 100 is different.In other embodiments, visual detector 326 can include Visually the annular blade 126 of instruction staple driver 156 and attachment is by any kind of visual detector in percussion moment. In another embodiment, inside and the visual detector 326 of only cut annular release formula packing ring 214 remain attached to Annular blade 126.The outside of cut annular release formula packing ring 214 remains attached to anvil base surface after opening apparatus 220。
Figure 34 shows, the annular blade 126 at staple driver 156 and attachment is fired to cut annular separate type packing ring After 214, from circular stapler apparatus 100, remove the anvil block 210 of the anvil assembly 112 of Figure 33, remaining annular release formula Packing ring 214 and protection component 314 then remain attached to annular blade 126 due to washer attachment member 308.Protection component 314 Continue the blade 192 of protection annular blade 126, to prevent it from being hit at the annular blade 126 of staple driver 156 and attachment Send out and unexpected cutting occurs afterwards.Additionally, visual detector 326 continues instruction staple driver 156 and the annular blade 126 of attachment Fired.
Figure 35 illustrates the new anvil block 210C of the circular stapler apparatus 100 attempting to be attached to Figure 34.As shown in figure 36, it is attached to The protection component 314 of annular release formula packing ring 214 (it is attached with the annular blade 126 of percussion) hinders new anvil block 210C so that it is Circular stapler apparatus 100 can not be attached to.As shown in figure 35, this is owing to the diameter 328 of protection component 314 is more than new annular point Internal diameter 330 from formula packing ring 332.Even if protection component 314 is not attached to annular release formula packing ring 214, annular release formula packing ring 214 still can hinder new anvil block 210C so that it is can not be attached to circular stapler apparatus 100, because annular release formula packing ring 214 has There is the diameter 334 identical or bigger with the internal diameter 330 of new annular release formula packing ring 332.
In order to reuse the circular stapler apparatus 100 of Figure 34, Fig. 1-2 institute can be removed from circular stapler apparatus 100 Show staple heavy cartridges assembly 102, thus remove the annular blade 126 and the separate type packing ring 214 of attachment fired.To circle Suture instruments 100 do not remove after part (shank 116 of such as Fig. 1 do not remove parts with other) carries out disinfection, again Before using circular stapler apparatus 100, another untapped staple heavy cartridges assembly (can be included that another is untapped Annular blade and another untapped separate type packing ring) be attached to have sterilized circular stapler apparatus 100 do not remove portion Point.Figure 37 illustrates the flow chart of an embodiment of the method 340 of the separate type packing ring that blade locks onto circular stapler apparatus. In step 342, it is provided that a kind of circular stapler apparatus.The circular stapler apparatus provided includes housing, staple driver, anvil Holder assembly and blade.Staple driver is movably disposed in housing.Anvil assembly includes the separation being attached to anvil base surface Formula packing ring.Blade is attached to staple driver.
In step 344, anvil assembly moves to the closed position of neighbouring housing from the open position away from housing.In step In rapid 346, staple driver moves to firing position from pre-firing position, and at pre-firing position, blade not yet cuts separation Formula packing ring, and the separate type washer attachment member of blade is not yet attached to separate type packing ring；At firing position, blade cuts Separate type packing ring, and the separate type washer attachment member of blade is fixedly attached to separate type packing ring.Separate type packing ring is attached Component can include that at least one the separate type packing ring extending to the blade of blade with non-parallel angle from blade keeps barb.Non-flat In the range of row angle can be spent 56 to 60.In other embodiments, in the range of non-parallel angle can be spent 30 to 60. In further embodiments, separate type washer attachment member can change.In one embodiment, step 346 can include blade Cut the web of separate type packing ring, and this at least one separate type packing ring keeps barb to be fixedly attached to separate type packing ring One of them spaced apart wall.
In optional step 348, it may occur however that one or more situations following: separate type packing ring may interfere with circular stapler One or more parts of apparatus, make blade can not retract to housing interior to reuse；Separate type packing ring or be attached to separate The protection component of formula packing ring can serve as the protective barrier of blade；Or separate type packing ring or be attached to the another of separate type packing ring The visual detector of one component can visually indicate staple driver to be fired.
In optional step 350, the following step can be continued: staple heavy cartridges group can be removed from circular stapler apparatus Part, thus remove used blade and separate type packing ring；The part that do not removes of circular stapler apparatus can be carried out disinfection；And Before reusing circular stapler apparatus, untapped staple heavy cartridges assembly (can be included untapped blade and not The separate type packing ring used) it is attached to circular stapler apparatus.In other embodiments, the one or more steps of method 340 can With change.
One or more embodiments of the disclosure can cause following any result: prevents the circular stapler fired The used blade of apparatus unexpectedly reuses in another is performed the operation, thus improves cleanliness factor and safety；Prevent The used blade of the circular stapler apparatus of percussion carries out unexpected cutting；Prevent circular stapler apparatus from not firing；Or it is another kind of Beneficial effect.
Figure 38-46 illustrates the various views of the circular stapler apparatus 100 of the embodiment of Fig. 1 and 2, and shows various shape The locking device 352 of state, this device can be used for any embodiment of the disclosure, to prevent firing trigger 122 and corresponding staple Driver 156 does not fires.Figure 38-40 illustrates the anvil assembly being arranged on the open position beyond percussion district and away from housing 110 The various views of 112, wherein firing trigger 122 and the most affected staple driver 156 are in lock in pre-percussion position Determine state.When beyond anvil assembly 112 is arranged on percussion district and away from the open position of housing 110, utilize the reciprocal of attachment Formula anvil block adjusting rod 114 and anvil block control member 120, be remotely located from the end of staple guider 148 by anvil base surface 220 Distance 354 in the range of 0.100 to 3.0 inch.At this pre-firing position, reciprocating anvil block adjusting rod 114 threaded End 286 be arranged on anvil block control member 120 mating band thread spindles 360 inside 358 at and interior, and be configured to The end 362 of the mating band thread spindle 360 of anvil block control member 120 separates.
The flange 364 of firing trigger 122 is used against the Part I 366 of reciprocating anvil block adjusting rod 114, this Part I Make locking device 352 and stop and prevent firing trigger 122 from rotating on direction 124.The second of reciprocating anvil block adjusting rod 114 Part 370 is configured to separate with flange 364.Flange 364 includes relative wall 372 and 374, and they are configured to be separated by The distance 376 of 0.190 inch.The width 378 of the Part I 366 of reciprocating anvil block adjusting rod 114 is 0.290 inch.Back and forth The width 380 (seeing Figure 43) of the Part II 370 of formula anvil block adjusting rod 114 is 0.170 inch.Due to Part I 366 Width 378 is more than the distance 376 between the relative wall 372 and 374 of flange 364, thus prevents firing trigger 122 in direction Rotate on 124.
The upper end 294 of firing trigger 122 coordinates in the engaging groove 288 and 290 (seeing Fig. 3) of trigger shaft 282.Percussion is pulled The upper end 294 of machine 122 includes relative surface 294A and 294B, and they are configured to be separated by the distance 382 of 0.574 inch.Phase To surface 294A and 294B between distance 382 more than the width 378 of Part I 366, this allows relative surface 294A Through Part I 366 and engaging groove 288 and 290 is entered with 294B.The end 384 of trigger shaft 282 is configured to drive with staple The end 386 of dynamic device 156 separates.Owing to the Part I 366 of reciprocating anvil block adjusting rod 114 stops firing trigger 122 in side Rotating on 124, the end 384 (it is coupled to firing trigger 122) of trigger shaft 282 is still arranged on and staple driver 156 The position that separates of end 386, thus staple driver 156 is maintained at the lock-out state of pre-percussion.
Figure 41-43 illustrates that in being arranged on percussion district, the various of anvil assembly 112 of the closed position of neighbouring housing 110 regard Figure, wherein firing trigger 122 and the most affected staple driver 156 are preparing the released state of percussion, but still Identical pre-firing position as illustrated in figs. 38-40.The close stance of neighbouring housing 110 in anvil assembly 112 is arranged on percussion district When putting, utilize reciprocating anvil block adjusting rod 114 and the anvil block control member 120 of attachment, anvil base surface 220 is remotely located from The distance 388 of the end of staple guider 148 is in the range of 0.06 to 0.100 inch.Anvil block control member 120 has revolved Turn so that the threaded end 286 of reciprocating anvil block adjusting rod 114 is at the mating band thread spindle 360 away from anvil block control member 120 Inside 358 direction 390 on move towards the end 362 of the mating band thread spindle 360 of anvil block control member 120 and move to this End.Due to this motion, the Part I 366 of reciprocating anvil block adjusting rod 114 move on direction 390 and be configured to The relative wall 372 and 374 of flange 364 separates so that Part I 366 is no longer interfere with flange 364.Reciprocating anvil block adjusting rod The Part II 370 of 114 also moves to be arranged on the position above flange 364 from the position away from flange 364 on direction 390 Put.
Due to the distance 376 between the width 380 of the Part II 370 relative wall 372 and 374 less than flange 364, hit Send out trigger 122 now can freely fire, and not near adjacent Part II 370.The phase of the upper end 294 of firing trigger 122 To surface 294A and 294B still coordinate in the engaging groove 288 and 290 (seeing Fig. 3) of trigger shaft 282.Due to firing trigger 122 also do not rotate on direction 124, although and unlock, but still in pre-firing position, firing trigger 122 not motion The trigger shaft 282 coordinated, and the end 384 of trigger shaft 282 is still configured to the end 386 points with staple driver 156 It is in it from so that staple driver 156 not fire but the position for preparing percussion.
Figure 44-46 illustrates that in the range of being arranged on percussion, the various of anvil assembly 112 of the closed position of neighbouring housing 110 regard Figure, wherein firing trigger 122 rotates on direction 124 and makes firing trigger 122 and the most affected staple driving Device 156 fires.Firing trigger 122 allows to be fired, because the Part I 366 of reciprocating anvil block adjusting rod 114 is before this in side Move on 390 and be configured to separate with flange 364 so that Part I 366 is no longer interfere with flange 364, and reciprocating The width 380 of the Part II 370 of anvil block adjusting rod 114 is less than the distance between the relative wall 372 and 374 of flange 364 376, this allows firing trigger 122 to be fired in the case of not affected by Part II 370.
During the percussion of firing trigger 122, when firing trigger 122 rotates on direction 124, firing trigger 122 The engaging groove 288 and 290 that coordinates accordingly against trigger shaft 282 of relative surface 294A and 294B of upper end 294 (see figure 3) move on direction 392, thus force trigger shaft 282 also to move on direction 392.This motion makes trigger shaft 282 End 384 is against the end 386 of staple driver 156, thus forces staple driver 156 also to be fired and on direction 392 Motion.During this percussion of staple driver 156, the motion of staple driver 156 by staple 104 (see Fig. 7 and 31) ring-type staple holder 148 (seeing Fig. 4-5,7 and 31) is ejected, and as previously mentioned with being attached to staple driver 156 Annular blade 126 (seeing Figure 31) cutting tissue.
In this way, locking device 352 be automatically prevented from firing trigger 122 and corresponding staple driver 156 and Staple 104 (seeing Fig. 7 and 31) does not fires, and the user of circular stapler apparatus 100 need not manual operation locking device.Additionally, When anvil assembly 112 is in an open position, locking device 352 by firing trigger 122 and corresponding staple driver 156 and Staple 104 (seeing Fig. 7 and 31) automatically locks at pre-firing position；When anvil assembly 112 is in the closed position, locking Firing trigger 122 is automatically unlocked by device 352 with corresponding staple driver 156 and staple 104 (seeing Fig. 7 and 31).Lock Tight device 352 operates by this way, regardless of whether anvil assembly 112 has already turned on and closes how many times, no matter also percussion is pulled Machine 122 and corresponding staple driver 156 and staple 104 (seeing Fig. 7 and 31) have fired.
Figure 47 A illustrates another embodiment of the circular stapler apparatus of Fig. 1, and it has another locking device 352A, uses Prevent staple driver 156 from (seeing Fig. 2) being assembled on shank 116 by staple heavy cartridges assembly 108 (seeing Fig. 2) and And anvil block 210 moves time in an open position.In the case of anvil block 210 is in an open position, reciprocating anvil block regulates Bar 114 adjacent to part 114E of flexible braking component 178 have less than but the annular of sufficiently close together staple driver 156 in size The width in the hole 196 of interior axle 194 or the size of diameter 196A, width or diameter 401 (seeing Fig. 3 B), to prevent flexible braking structure The part 178 distance 400 between part 114E and bore area 196B of anvil block adjusting rod 114 is sufficiently large, to such an extent as to from braking Lug 180 biases and departs from, and then prevents staple driver 156 from moving and firing.As shown in Figure 47 B, when anvil block 210 is near closing During closed position, reciprocating anvil block adjusting rod 114 has in size enough adjacent to the more narrow 114F of flexible braking component 178 (join less than width or the size of diameter 196A, width or the diameter 402 in the hole 196 of axle 194 in the annular of staple driver 156 See Fig. 3 A), to allow flexible braking component 178 to have foot between part 114F and bore area 196B of anvil block adjusting rod 114 Enough distances 400, in order to bias from braking lug 180 and depart from, allow staple driver 156 move and fire then.
The specification digest of the disclosure is used for allowing reader quickly understand essence disclosed in this technology.Should be appreciated that and submitted to This specification digest be not configured to explain or limit the scope of claim or connotation.Additionally, in above-mentioned detailed description of the invention In it will be seen that each feature is combined in various embodiments in order to make the disclosure the simplest and the clearest.The disclosure Method should not be construed as embodying such intention: claimed embodiment requires than institute in each claim The more feature clearly enumerated.On the contrary, as the following claims reflect, subject of the present invention is less than the present invention All features of disclosed single embodiment.Therefore, accordingly claims below is incorporated in detailed description of the invention, and Each claim is individually as claimed subject matter.Although it have been described that multiple enforcements of the disclosure Example, but it will be apparent to one of ordinary skill in the art that, can also there be other embodiments in the scope of the present disclosure And embodiment.Therefore, the disclosure is not limited by addition to claims and equivalents thereof.

Claims (6)

1. a circular stapler apparatus, including:
Reciprocal transmission axle, described reciprocal transmission axle has the engagement member at described reciprocal transmission the tip of the axis and described past Threaded adjustment means at the base portion of multiple power transmission shaft；
Trigger shaft, described trigger shaft forms engagement member and has the joint axle forming opening, is received described by described opening The described end of reciprocal transmission axle；
Shank, described shank has firing trigger and opens top cavity portion, and wherein said top cavity portion of opening has the end of thread, and Open top cavity portion described in and and receive described trigger shaft and described reciprocal transmission axle by opening apical grafting, wherein said firing trigger upper End engages the engagement member of described trigger shaft and described trigger shaft and described reciprocal transmission axle is removably attached to described handle Open described in portion in the cavity portion of top；
Single type carrier cover, described single type carrier cover includes the carrier cover axle forming carrier cover opening, by described carrier cover Opening receives the described end of described reciprocal transmission axle, wherein when described single type carrier cover is attached to described shank, described Single type carrier cover covers and is arranged in the described trigger shaft opened in the cavity portion of top of described shank and described reciprocal transmission axle A part；With
Shaft assembly, described shaft assembly is connected with the end of thread screw thread of described shank.
Circular stapler apparatus the most according to claim 1, also includes anvil assembly, described anvil assembly and described joint structure Part is detachably connected in the described end of described reciprocal transmission axle.
Circular stapler apparatus the most according to claim 1, wherein said single type carrier cover forms the second opening, by institute State the second opening and receive the end of thread of described shank.
Circular stapler apparatus the most according to claim 1, wherein said shaft assembly has and the end of thread on described shank The attaching nut that screw thread is connected.
Circular stapler apparatus the most according to claim 1, also includes and the described threaded regulation of described reciprocal transmission axle The anvil block Guan Bi knob that component is detachably connected.
Circular stapler apparatus the most according to claim 1, also includes the nail bin group being detachably connected with described shaft assembly Part, the described end of wherein said reciprocal transmission axle extends through the central shaft being formed in described nail bin groupware.
CN201110316349.2A 2011-05-19 2011-10-12 There is the reusable circular stapler shank of open package assembly Active CN102783982B (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US13/111,770 US8833629B2 (en) 2011-05-19 2011-05-19 Reusable circular stapler handle with open assembly architecture
US13/111,795 US8746532B2 (en) 2011-05-19 2011-05-19 Anvil and cartridge alignment configuration for a circular stapler
US13/111,827 US8567655B2 (en) 2011-05-19 2011-05-19 Circular stapler with automatic locking mechanism
US13/111,841 US8733615B2 (en) 2011-05-19 2011-05-19 Circular stapler with frictional reducing member
US13/111,770 2011-05-19

Publications (2)

Publication Number Publication Date
CN102783982A CN102783982A (en) 2012-11-21
CN102783982B true CN102783982B (en) 2016-12-14

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US4603693A (en) * 1977-05-26 1986-08-05 United States Surgical Corporation Instrument for circular surgical stapling of hollow body organs and disposable cartridge therefor
US5205459A (en) * 1991-08-23 1993-04-27 Ethicon, Inc. Surgical anastomosis stapling instrument
US5356064A (en) * 1991-10-18 1994-10-18 United States Surgical Corporation Apparatus and method for applying surgical staples to attach an object to body tissue
US6099537A (en) * 1996-02-26 2000-08-08 Olympus Optical Co., Ltd. Medical treatment instrument
EP0980676B1 (en) * 1998-08-17 2002-11-06 Deutsches Zentrum für Luft- und Raumfahrt e.V. Surgical anastomosis instrument
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