CN106923881B - A kind of operation anastomat - Google Patents
A kind of operation anastomat Download PDFInfo
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- CN106923881B CN106923881B CN201511027744.3A CN201511027744A CN106923881B CN 106923881 B CN106923881 B CN 106923881B CN 201511027744 A CN201511027744 A CN 201511027744A CN 106923881 B CN106923881 B CN 106923881B
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- cutter
- nail bin
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- extensions
- nail
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B17/115—Staplers for performing anastomosis in a single operation
- A61B17/1155—Circular staplers comprising a plurality of staples
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B17/1114—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis of the digestive tract, e.g. bowels or oesophagus
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/3209—Incision instruments
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- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physiology (AREA)
- Surgical Instruments (AREA)
Abstract
The present invention relates to a kind of operation anastomats comprising instrument body is arranged in the handle portion of the body proximal end and the nail head of the body distal end is arranged in, wherein the nail head includes nail bin groupware, anvil block and the anti-overflow mechanism of tissue；The nail bin groupware includes nail bin and the cutter that is movably disposed in the nail bin；The anvil block includes the knife anvil and nail anvil positioned at the distal cartridge end, and the knife anvil is equipped with cutting washer corresponding with the cutter；The anti-overflow mechanism of tissue includes two extensions that the anvil block is extended to from the nail bin, and described two extensions can keep tissue therebetween；Each comfortable opposite inside that it is contacted with tissue of described two extensions is equipped with a guiding structure along its length；The guiding structure has a sliding surface and a supporting surface.Operation anastomat of the invention can prevent tissue from overflowing during operation, fully detachment tissue is better achieved.
Description
Technical field
The invention belongs to medical instruments fields, are related to a kind of surgery instrument, and in particular to a kind of operation anastomat.
Background technique
Stapler is a kind of medical instrument for substituting manual suture, is widely used in the outer of the alimentary canals such as enteron aisle physiological tissue
Section's anastomosis operation, main operational principle are to carry out detachment to tissue using cutter and anastomosis staple and coincide.
Typically, operation anastomat includes nail bin groupware, anvil block, close mechanism and firing lock, wherein nail bin groupware
Nail bin including having accommodated anastomosis staple and cutter, wherein be generally equipped at least row's anastomosis staple in cutter two sides；The anvil block
Including anvil block；Close mechanism is for keeping nail bin and anvil block close to each other, so that the tissue of receiving is clamped in nail bin and anvil
Between seat；Firing lock makes the two that anvil block is pushed out and marched to from nail bin, to realize folder for firing anastomosis staple and cutter
It is held in the cutting and suture of the tissue between nail bin and anvil block.
Ideal situation is during marching to anvil block from nail bin after cutter is fired, cutter penetrate tissue and
The thoroughly tissue of detachment whole.However, in the actual use process, organizing the extruding by nail bin and anvil block, it is easy quilt
Flatten and the tissue at both ends caused to overflow, cutter can not detachment both ends spilling tissue, to cause tissue complete
The problem of cutting.
Summary of the invention
The purpose of the present invention is to provide a kind of operation anastomats comprising instrument body is arranged in the body proximal end
Handle portion and the nail head of the body distal end is set, wherein the nail head includes that nail bin groupware, anvil block and tissue are anti-
Excessive mechanism；The nail bin groupware includes nail bin and the cutter that is movably disposed in the nail bin；The anvil block includes being located at
The knife anvil and nail anvil of the distal cartridge end, the knife anvil are equipped with cutting washer corresponding with the cutter；The nail bin is opposite
In the anvil block relative motion separately can be carried out between position and the near position that connects at one；The cutter can be by
Actuating ground stretches out out of described nail bin and marches to the cutting washer；The anti-overflow mechanism of the tissue includes prolonging from the nail bin
Two extensions of the anvil block are extended to, described two extensions can keep tissue therebetween；Described two extensions
Each comfortable opposite inside that it is contacted with tissue of part is equipped with a guiding structure along its length；The guiding structure tool
There are a sliding surface and a supporting surface；The cutter has two ends extended by proximate；In the cutter from described
During stretching out in nail bin and marching to the cutting washer, two ends of the cutter respectively with described two extensions
Guiding structure cooperation.
In a preferred embodiment of the invention, the end of the cutter has an end face and two side walls face,
During the cutter is stretched out out of described nail bin and marches to the cutting washer, the end face of the end of the cutter
It is held in the supporting surface, and one of side wall surface of the end is slided along the sliding surface of described two extensions.
In a more preferred embodiment of the present invention, in the guiding structure, the sliding surface is supported with described
Face connects to form L shape structure.
In a preferred embodiment of the invention, the anti-overflow mechanism of the tissue further includes being arranged on the anvil block
, make tissue be maintained at it is described cutting washer both ends between stop part.
In a more preferred embodiment of the present invention, the stop part has a confined planes, prolongs when described two
When stretching part and extending to the anvil block, the confined planes and the sliding surface are oppositely disposed to form a limiting slot；
When the cutter marches to the cutting washer, the cutter is located in the limiting slot.
In another more preferred of the invention, set on the anvil block there are two respectively with described two extensions
The corresponding cooperation position of part；Described two cooperation positions are respectively on the side at the cutting washer both ends, so that the cutter
It is directed at the cutting washer and marches in the cutting washer；The stop part is located at the inside of the cooperation position to be isolated
Tissue and extension.
In a preferred embodiment of the invention, the distal face of the nail bin is equipped with separating tissues and two extensions
The separator of part.
In a preferred embodiment of the invention, the nail head further includes preventing the extension radial rotating
Anti-rotation structure.
In a more preferred embodiment of the present invention, the anti-rotation structure includes the cunning being arranged in the nail bin
Slot, the extension are slided along the sliding slot in the axial direction, and the sliding slot prevents the radial rotating of the extension.
Operation anastomat of the invention can prevent tissue from overflowing during operation, be better achieved fully from
Disconnected tissue.
Detailed description of the invention
Fig. 1 is the perspective view according to the operation anastomat of the embodiment of the present invention 1；
Fig. 2 is the perspective view that closed state is according to the operation anastomat of the embodiment of the present invention 1；
Fig. 3 is the exploded view according to the nail head of the operation anastomat of the embodiment of the present invention 1；
Fig. 4 is the perspective view of nail bin shown in Fig. 3；
Fig. 5 is the exploded view of anvil block shown in Fig. 3；
Fig. 6 is the perspective view of knife anvil shown in Fig. 5；
Fig. 7 is the perspective view according to the nail bin (not installing two extensions) of the operation anastomat of the embodiment of the present invention 2；
Fig. 8 is the perspective view according to the nail bin (being mounted with two extensions) of the operation anastomat of the embodiment of the present invention 2；
Fig. 9 is the perspective view according to the knife anvil of the operation anastomat of the embodiment of the present invention 2；
Figure 10 is the perspective view according to the nail bin (being mounted with two extensions) of the operation anastomat of the embodiment of the present invention 3；
Figure 11 is the perspective view of extension shown in Fig. 10；
Figure 12 is the perspective view according to the knife anvil of the operation anastomat of the embodiment of the present invention 3.
Specific embodiment
Below with reference to specific embodiment shown in the drawings, the present invention will be described in detail.But these embodiments are simultaneously
The present invention is not limited, structure that those skilled in the art are made according to these embodiments, method or functionally
Transformation is included within the scope of protection of the present invention.
The word of described expression position and direction in the present invention, is to lean near operation using equipment operator as reference
One end of person is proximal end, and one end far from operator is distal end.Axial direction refers to proximal end to the length direction of distal end.
" first " that is previously mentioned in present embodiment, " second " etc. do not include absolute in positional relationship or structure function simultaneously
Differentiation relationship, also, in various embodiments may use identical label or label, this also not representative structure
Or connection functionally, and merely for convenience of description.
Embodiment 1
Referring to Fig. 1 to Fig. 6, the operation anastomat of the embodiment of the present invention 1 is shown.Referring to Fig. 1 to Fig. 2, the present invention is implemented
The operation anastomat of example 1 specifically includes that instrument body 100, the handle portion 200 of 100 proximal end of ontology is arranged in and is arranged in ontology
The nail head 300 of 100 proximal ends.
Instrument body 100 includes with bracket 101 proximally and distally.Handle portion 200 includes being held by surgeon
Gripping member 201 held etc..
Nail head 300 includes nail bin groupware 1, anvil block 2 and the anti-overflow mechanism (not labeled) of tissue.
Preferably, in the present embodiment, nail head 300 is curved, and operation anastomat is flexure type stapler, referring to figure
1 to Fig. 3, nail head 300 includes the U-shaped support construction 3 for being used to support and installing nail bin groupware 1 and anvil block 2.Nail head 300 can
To be designed to have the multiple percussion lock of replaceable nail bin groupware 1, single percussion lock can also be designed to.
Nail bin groupware 1 can separately carry out opposite relative to anvil block 2 at one between position and the near position that connects
Movement.Operation anastomat shown in FIG. 1 is in the open state, and nail bin groupware 1 is in the position separately relative to anvil block 2
Will organize to be placed between nail bin groupware 1 and anvil block 2.Operation anastomat shown in Fig. 2 is in closed state, 1 phase of nail bin groupware
The position being close is in by tissue positioning and clamping between the two for anvil block 2.
Referring to Fig. 3 and Fig. 4, nail bin groupware 1 includes nail bin 11 and the cutter 12 being movably disposed in nail bin 11.Nail bin
11 distal face is nail bin face 11a, i.e., the surface contacted with tissue.What nail bin face 11a was equipped with leads cutter groove for what cutter stretched out
Slot 11b leads binding slot slot 11c that the cutter groove two sides slot 11b are multi-row staggered arrangement, discharging for anastomosis staple.Nail bin group
Part 1 further includes that nail-pushing part 13 in nail bin 11, for releasing anastomosis staple out of nail bin 11 is arranged in, can from Fig. 3
Out, it is equipped in nail-pushing part 13 and leads cutter groove (being not marked in figure) for what cutter 12 was pierced by.
Referring to Fig. 3, Fig. 5 and Fig. 6, anvil block 2 includes nail anvil that is positioned at 11 distal end of nail bin and being oppositely disposed with nail bin 11
22 and knife anvil 21, nail anvil 22 is equipped with nail forming area 22c corresponding with bookbinding slot slot 11c, and knife anvil 21 is equipped with and cutter
12 corresponding cutting washers 211.In the present embodiment, referring to Fig. 5, knife anvil 21 is located at the distal end of nail anvil 22, and can with nail anvil 22
Connection is removedly fixed.Through-hole 22b (center that nail forming area 22c can be located at) can be offered on nail anvil 22, work as nail anvil
22 with knife anvil 21 when connecting, and through-hole 22b exposes cutting washer 211, and anvil block 2 is same on the proximal end face towards nail bin 11 as a result,
When with cutting washer 211 and be centered around cut washer 211 around nail forming area 22c.
Cutter 12 can stretch out out of nail bin 11 and march to cutting washer 211 with being activated.Specifically, in the present embodiment
In, ontology 100 and handle portion 200, which are designed to have, allows nail bin 11 and the close mechanism close to each other of anvil block 2 (in figure not
Show) and firing lock (not shown) for firing anastomosis staple and cutter 12.As depicted in figs. 1 and 2, handle portion 200
Including the trigger 202 pivotly to extend out from ontology 100.In the present embodiment, trigger 202 and close mechanism are in actuating
It is associated while also associated in actuating with firing lock.As shown in Figure 1, nail bin 11 is in the open position to organize
It is placed between nail bin 11 and anvil block 2.When surgeon's grip pressure trigger 202, trigger 202 is mobile towards gripping member 201, so that driving is closed
Closing mechanism makes nail bin 11 mobile towards anvil block 2.As shown in Fig. 2, nail bin 11 is in the close position, the nail bin face of distal cartridge end
11a and 2 proximal end face of anvil block are close to each other to organize to position and keep.Later, when surgeon continue grip pressure trigger 202,
Firing lock (including nail-pushing part 13 etc.) releases cutter 12 and anastomosis staple from nail bin 11, is shot respectively to the cutting of anvil block 2
Washer 211 and nail forming area 22c are to cut and clench tissue.
In the present embodiment, trigger 202 can reset.
In an alternate embodiment of the present invention, handle portion 200 includes two triggers (closure trigger and firing trigger),
It is associated in actuating with close mechanism and firing lock respectively.
Organizing anti-overflow mechanism includes that stopping between both ends on anvil block 2, making tissue be maintained at cutting washer 211 is arranged in
Block piece 212.Preferably, in the present embodiment, referring to Fig. 6, a stop part 212 is respectively set in the end positions of cutting washer 211,
Two stop parts 212 respectively have a stop surface 2120, and the stop surface 2120 of two stop parts 212 is oppositely disposed (can also
It is arranged with the center for saying stop surface 2120 towards cutting washer 211), so that tissue is maintained between two stop surfaces 2120.
So, not only facilitate the positioning of tissue, it is often more important that under the closed state of Fig. 2, be located at nail bin 11 and anvil block 2 it
Between tissue when being extruded, organize the both ends blocking and constraint by two stop surfaces 2120 respectively, will not be due to excessive compression
It spills into except cutting washer 211, cutter 12 detachment can be constrained on the tissue between the both ends of cutting washer 211 completely.
Preferably, as shown in fig. 6, stop surface 2120 is an inclined surface, obtuse angle can be formed with cutting washer 211,
That is stop surface 2120 and cutting 211 place plane of washer can form the dihedral angle for being less than 180 degree greater than 90 degree.It is preferred that
, the inclined surface of stop surface 2120 is extended distally to be directly connected to the end of cutting washer 211.Preferably, stop part 212
For protrusion, from the proximally direction protrusion of anvil block 2.Preferably, as shown in fig. 6, stop part 212 substantially in from distal end to proximal end,
The ridge projections part that cross section is gradually reduced.Preferably, on the basis of cutting 211 place plane of washer, stop part 212 is proximally
The vertical height of direction protrusion does not influence the closure of instrument.In the present embodiment, stop part 212 is arranged on knife anvil 21.At this
In another embodiment of invention, stop surface 2120 can also be with the dihedral angle of cutting 211 shape of washer at an acute angle or a right angle.
In general, cutting washer 211 is a plastic washer, cutter 12, which marches to cutting washer 211 and cuts, penetrates the modeling
Backing strap circle is with detachment tissue thorough on the thickness direction of tissue.It will be apparent that the plastic washer finally penetrated by cutting is also
Tissue is identified in a thickness direction by the proof of thorough detachment, while to doctor with touch feedback.
Preferably, as shown in fig. 6, offering limiting slot 213 on stop part 212, when cutter 12 marches to cutting washer 211
When, cutter 12 is located in limiting slot 213.That is, the two sides of cutter 12 are limited (in other words, limiting slot by limiting slot 213
213 are adapted with the shape of cutter 12), to prevent displacement or shaking of the cutter 12 on its two sides direction.It can from Fig. 6
To find out, in the present embodiment, stop part 212 is made of a pair of of protrusion, this pair of of protrusion is located at the two of limiting slot 213
Side, this pair of of protrusion forms respectively the two sides of limiting slot 213 in other words.It is furthermore preferred that limiting slot 213 and cutting washer
211 is vertical or substantially vertical, to be consistent with the travel path of cutter 12.
As shown in Figure 3 and Figure 4, organize anti-overflow mechanism further include two extensions 14 extended from nail bin 11 to anvil block 2,
15, two extensions 14,15 can keep tissue therebetween.When nail bin 11 is in the close position, it is drawn into ailhead
Tissue in portion 300 is maintained in the thickness direction thereof between nail bin 11 and anvil block 2, and both ends are maintained at two extensions
14, between 15.
Each comfortable opposite insides that it contact with tissue of two extensions 14,15 are equipped with leading along its length
Guiding structure 141,151, and the both ends organized are maintained between two guiding structures 141,151.In cutter 12 from nail bin 11
It is interior stretching and march to cutting washer 211 during, the both ends of cutter 12 are respectively along the guiding knot of two extensions 14,15
Structure 141,151 slides.So, due to the blocking and constraint by two extensions 14,15 respectively of the both ends of tissue, cutter
While 12 both ends are slided along guiding structure 141,151, the both ends of tissue can be completely covered in the blade of cutter 12, no
Can overflow there is a situation where tissue both ends can not detachment.
Preferably, in the present embodiment, guiding structure 141,151 is a Guiding surfaces, and the both ends organized are kept
Between two Guiding surfaces 141,151.During cutter 12 is stretched out out of nail bin 11 and marches to cutting washer 211,
The end face at the both ends of cutter 12 is held in the Guiding surfaces 141,151 of two extensions 14,15 and respectively along Guiding surfaces
141,151 sliding.
In an alternative embodiment, guiding structure 141 is a guiding groove, and the both ends setting of cutter 12 is slided in guiding
It is slided in slot and along guiding groove.
In the present embodiment, two extensions 14,15 are rod-like element.Preferably, two extensions 14,15 can be different,
One of them is the first extension 14, another is the second extension 15.
For example, the first extension 14 can be the alignment pin being slidably disposed in nail bin 11, it can be activated ground
It is flexible, thus the extended position that there is the retracted position for retracting nail bin 11 and extend out to anvil block 2, when alignment pin 14 extend out to anvil block
When 2, the position alignment of nail bin 11 and anvil block 2 is realized in alignment pin 14 and the cooperation of anvil block 2, specifically, nail bin on the one hand may be implemented
Bookbinding slot slot 11c on the 11a of face is aligned with the nail forming area 22c on nail anvil 22, and prior one side is better achieved
The position alignment of cutter 12 and cutting washer 211.
Preferably, as shown in Figure 3 and Figure 4, alignment pin 14 has a tip 142, when it is in extended position, alignment
The tip 142 of pin is with corresponding first cooperation position 214 cooperation on anvil block 2 (knife anvil 21) to realize position alignment.At this
In embodiment, the first cooperation position 214 is the hole being provided on knife anvil 21, naturally it is also possible to recessed on knife anvil 21 to be arranged in
Slot.Alignment pin 14 can mode manually be activated, can also be associated in actuating with close mechanism, i.e., closure machine
While structure makes nail bin 11 be moved to closed position, so that alignment pin 14 is moved to extended position and be aligned with the cooperation realization of anvil block 2.
For example, the second extension 15 therein can be fixedly disposed at the fixed pin 15 in nail head 300.Preferably,
Fixed pin 15 is fixedly connected with anvil block 2.As shown in Figures 3 to 6, the side of anvil block 2 (nail anvil 22) has the company proximally extended
Fitting 222, the proximal end of fixed pin 15 are fixedly installed to the proximal end mounting hole 2221 of connector 222, and the distal end of fixed pin 15 is successively
Across nail bin groupware 1 (nail-pushing part 13 and nail bin 11 etc.), the proximal end mounting hole 2221 of connector 222, until with (the knife anvil of anvil block 2
21) cooperation of corresponding second cooperation position 215 is on to realize being fixedly connected for fixed pin 15 and anvil block 2.In the present embodiment,
Second cooperation position 215 is the hole being provided on knife anvil 21.Of course, it is possible to for the groove being arranged on knife anvil 21.
As shown in figure 5, what the first cooperation position 214, fixed pin 15 and anvil block 2 that alignment pin 14 and anvil block 2 cooperate cooperated
Second cooperation position 215 is located at the side of the both ends boundary of cutting washer 211.In the present embodiment, first matches coincidence
Set 214 hole, the hole of the second cooperation position 215 is engaged with the both ends boundary of cutting washer 211 respectively.Therefore, when nail bin 11 moves
When moving closed position, the distal end of alignment pin 14 and fixed pin 15 cooperates with anvil block 2 to limit two end edges of cutting washer 211
Boundary is aligned to realize cutter 12 in advance with the position for cutting washer 211 completely, and subsequent cutter 12 is fired to anvil block 2
In the process, the both ends of cutter 12 will necessarily accurately slide into cutting washer along the guiding structure of alignment pin 14 and fixed pin 15
Within 211 both ends boundary, i.e., other than both ends boundary of the cutter 12 without departing from cutting washer 211.
As shown in fig. 6, two stop parts 211 are located at the both ends of cutting washer 211 and are separately positioned on the first cooperation position
214 and second cooperation position 215 inside, thus when operation anastomat is in the closed state of Fig. 2, two stop parts 211
Tissue can be slightly isolated with alignment pin 14 and fixed pin 15, further prevent tissue adhesion (not completely cutting through)
The case where.
Preferably, as shown in figure 5, when alignment pin 14 and fixed pin 15 respectively on anvil block 2 the first cooperation position 214 and
When second cooperation position 215 cooperates, the lateral surface of two stop parts 211 respectively with Guiding surfaces 141 of alignment pin 14 and fixed
The Guiding surfaces 151 of pin 15 are bonded.
Embodiment 2
The operation anastomat of embodiment 2 and the difference of embodiment 1, as described below:
Referring to figs. 7 and 8, the nail bin face 11a of nail bin 11 is equipped with the separator of separating tissues and two extensions 14,15
111。
Specifically, nail bin face 11a is equipped with the mounting hole 11d stretched out for two extensions 14,15, on the 11a of nail bin face
It is additionally provided with two and is individually insulated tissue and the separator 111 of two mounting hole 11d.As shown in fig. 7, separator 111 is located at installation
Hole 11d with the inside that contact of tissue and to distal projection, separator 111 can nail bin face 11a isolation group in the plane
Knit with mounting hole 11d, thus separating tissues and extension 14,15.
Preferably, when nail bin 11 is in the position being close relative to anvil block 2, separator 111 enters stop part 212
In limiting slot 213.
Preferably, referring to Fig. 7, separator 111 is prominent including a pair of of the isolation for being separately positioned on the two sides for leading cutter groove slot 11b
It rises, it is furthermore preferred that this pair of isolation protrusion can further extend along the cell wall for leading cutter groove to distal end, so as to cutter 12
Movement play further limit guide function.
In addition, nail head 300 further includes devising the anti-rotation structure for preventing extension 14,15 radial rotatings.
Referring to Fig. 8 and Fig. 9, anti-rotation structure may include the card slot 217 being arranged on anvil block 2 (knife anvil 21).With extension
For 15, when the distal end of extension 15 153 extends to anvil block 2, the distal end 153 of extension 15 (along its axial direction/length direction)
It is inserted into card slot 217, is cooperated with card slot 217, while card slot 217 can prevent the rotation in the radial direction of extension 15.
Preferably, in the present embodiment, two extensions 14,15 cooperate with card slot 216,217 corresponding on anvil block 2 to limit
The both ends boundary of cutting washer 211 is made, during subsequent cutter 12 is fired to anvil block 2, the both ends of cutter 12 will necessarily
Slide into cutting washer 211 accurately along the guiding structure of two extensions 14,15 to penetrate plastic washer.
Preferably, as shown in figure 9, the entity knot of two stop parts 212 at cutting 211 both ends of washer and card slot 216,217
Structure is integrally formed, and the limiting slot 213 opened up on two stop parts 212 is spatially connected to two card slots 216,217 respectively.
Referring to figs. 7 and 8, anti-rotation structure can also include that the sliding slot in nail bin 11 is arranged in (referring to mounting hole in Fig. 7
Shown in 11d) and extension 14,15 between anti-rotation fit structure, specifically, by taking extension 15 as an example, extension 15 can be with
(extending out to anvil block 2 from mounting hole 11d) is slided along the chute on axial direction/length direction, but sliding slot can prevent extension 15 from existing
Rotation radially.Preferably, in the present embodiment, the cross section of extension 14,15 be in discount vibram outlet shape, sliding slot cross section (referring to
Mounting hole 11d in Fig. 7) it is in discount vibram outlet shape, thus realize extension 14,15 and sliding of the nail bin 11 on axial direction/length direction, with
And rotation stop in the radial direction.Preferably, in the cross section of extension 14,15, discount vibram outlet area is less than the half of the transversal gross area.
On the one hand the anti-rotation structure of the present embodiment can enable cutter 12 more stably sliding along extension 14,15
It is dynamic, on the other hand, the positioning of extension 14,15 is better achieved, it is final to realize cutter 12 and cut the position between washer 211
Alignment.
Certainly, those skilled in the art can go out many radial rotations for realizing extension with Demand Design according to the present invention
Alternative structure, this point is well-known to those skilled in the art.
Embodiment 3
The operation anastomat of embodiment 3 comprising instrument body is arranged in the handle portion of body proximal end and is arranged in ontology
The nail head of distal end, wherein nail head includes nail bin groupware, anvil block and the anti-overflow mechanism of tissue；Nail bin groupware includes nail bin and can
The cutter being movably arranged in nail bin；Anvil block includes the knife anvil and nail anvil positioned at distal cartridge end, and knife anvil is equipped with and cutter pair
The cutting washer answered；Nail bin can separately carry out opposite fortune at one relative to anvil block between position and the near position that connects
It is dynamic；Cutter can stretch out out of nail bin and march to the cutting washer with being activated.
The overall structure of embodiment 3 refers to the related narration in above-described embodiment 1, herein no longer substantially with embodiment 1
It repeats.
Embodiment 3 and the difference of embodiment 1 are: organizing anti-overflow mechanism.
As shown in Figure 10, the anti-overflow mechanism of the tissue of embodiment 3 includes that anvil block (not shown) is extended to from nail bin 11 '
Two extensions 14 ', 15 ', two extensions 14 ', 15 ' can keep tissue therebetween；When nail bin 11 ' is in closure
When position, the tissue being drawn into nail head (not shown) be maintained in the thickness direction thereof nail bin 11 ' and anvil block it
Between, both ends are maintained between two extensions 14 ', 15 '.Each comfortable its of two extensions 14 ', 15 ' is contacted with tissue
Opposite inside is equipped with a guiding structure 141 ', 151 ' along its length, and the both ends organized are maintained at two
Between guiding structure 141 ', 151 '.Stretch out out of nail bin 11 ' in cutter (not shown) (referring to shown in Figure 10 for cutting
Knife stretch out lead cutter groove slot 11b) and march to cutting washer 211 ' during, two ends of cutter are prolonged along two respectively
The guiding structure 141 ', 151 ' for stretching part 14 ', 15 ' slides.So, since the both ends of tissue are respectively by two extensions
14 ', 15 ' blocking and constraint, while the both ends of cutter are slided along guiding structure 141 ', 151 ', the blade of cutter
The both ends of tissue are completely covered, will not overflow there is a situation where tissue both ends can not detachment.
By taking extension 15 ' as an example, referring to Figure 11, guiding structure 151 ' has a sliding surface 151a ' and a supporting surface
151b’。
During cutter is stretched out out of nail bin 11 ' and marches to cutting washer 211 ', two ends of cutter are supported
While supporting surface 141b ', the 151b ' of two extensions 14 ', 15 ', along the sliding surface of two extensions 14 ', 15 '
141a ', 151a ' sliding.
Preferably, in the present embodiment, the end of cutter have an end face and two side walls face, wherein cutter from
During stretching out in nail bin 11 ' and marching to cutting washer 211 ', by taking extension 15 ' as an example, the end face of cutter end is supported
It is sliding along the sliding surface 151a ' of extension 15 ' in one of side wall surface of the supporting surface 151b ' of extension 15 ', cutter end
It is dynamic.
In the present embodiment, sliding surface 151a ' is arcwall face, is adapted with the shape of cutter.
In the same guiding structure, by taking guiding structure 151 ' as an example, join Figure 11, the sliding surface of guiding structure 151 '
151a ' connect to form L shape structure with supporting surface 151b '.
Preferably, (join referring to the cutter groove of leading that Figure 10, sliding surface 141a ', 151a ' are the cutter being arranged in nail bin 11 ' respectively
See in Figure 10 and lead the position cutter groove slot 11b ') wherein one side wall both ends extension plane, sliding surface in other words
141a ', 151a ' and the extension planar shaped at the both ends for the wherein one side wall for leading cutter groove are integral.
Referring to Figure 12, organize anti-overflow mechanism can also include be arranged in it is on anvil block, so that tissue is maintained at cutting washer
Stop part 212 ' between 211 ' both ends.Specifically, in embodiment 3, stop part 212 ' is arranged on knife anvil 21 '.
In embodiment 3, organizing anti-overflow mechanism includes two stop parts 212 ' for being located at cutting 211 ' both ends of washer,
Two stop parts respectively have a stop surface 2120 ', and the stop surface 2120 ' of two stop parts 212 ' is oppositely disposed (can also
To say the center setting of stop surface 2120 ' towards cutting washer 211 '), thus by tissue be maintained at two stop surfaces 2120 ' it
Between.
As shown in figure 12, stop surface 2120 ' is an inclined surface, and obtuse angle can be formed with cutting washer 211 ', that is,
It says, plane where stop surface 2120 ' and cutting washer 211 ' can form the dihedral angle for being less than 180 degree greater than 90 degree.Preferably,
The inclined surface of stop surface 2120 extends distally to cutting 211 place plane of washer.Preferably, stop part 212 ' is protrusion,
From the proximally direction protrusion of knife anvil 21 '.Preferably, as shown in figure 12, stop part 212 ' is substantially in from distal end to proximal end, cross section
The ridge projections part being gradually reduced.Preferably, on the basis of the plane where cutting washer 211 ', the proximally direction of stop part 212 '
The vertical height of protrusion does not influence the closure of instrument.In the present embodiment, stop part 212 ' is arranged on knife anvil 21 '.In this hair
In another bright embodiment, stop surface 2120 ' can also be with the dihedral angle of cutting 211 ' shape of washer at an acute angle or a right angle.
Stop part 212 ' has a confined planes 212a '.When two extensions 14 ', 15 ' extend to the knife anvil 21 ' of anvil block
When, be located at cutting 211 ' both ends of washer two stop parts 212 ' confined planes 212a ' respectively with sliding surface 141a ', 151a ' phase
Setting is over the ground to form two limiting slots 213 '；When cutter marches to cutting washer 211 ', two ends difference of cutter
In two limiting slots 213 '.That is, during cutter marches to cutting washer 211 ' from nail bin 11 ', cutter
End a side along sliding surface 141a ', 151a ' slide, i.e. limit of the side by sliding surface 141a ', 151a '；
When cutter marches to cutting washer 211 ', confined planes 212a ' of another side of the end of cutter by stop part 212 '
Limit.
Set on the knife anvil 21 ' of anvil block there are two cooperation position 214 ' corresponding with two extensions 14 ', 15 ' respectively,
215'；Two cooperation positions 214 ', 215 ' are respectively on the side at cutting 211 ' both ends of washer, so that cutter alignment cutting washer
211 ' and march to cutting washer 211 ' in；Stop part 212 ' be located at the inside of cooperation position 214 ', 215 ' with separating tissues with
Extension 14 ', 15 '.
It is specific to join about the matching relationship and actuation process of two extensions 14 ', 15 ' and nail bin 11 ' and knife anvil 21 '
See the related narration in embodiment 1, details are not described herein.
Likewise, being also provided with separating tissues and two extensions on the distal face 11a ' of the nail bin 11 ' of embodiment 3
14 ', 15 ' separator.When operation anastomat is in closed position shown in Fig. 2, separator enters two above-mentioned limiting slots
In 213 '.The related narration of specific ginseng embodiment 2, details are not described herein.
Likewise, the nail head of embodiment 3 can also design the anti-rotation structure for preventing extension 14 ', 15 ' from rotating.Anti-rotation
Structure may include the sliding slot (being not marked in figure) being arranged in nail bin 11 ', and extension 14 ', 15 ' is slided along the chute in the axial direction
Dynamic, sliding slot prevents the radial rotating of extension 14 ', 15 '.The related narration of specific ginseng embodiment 2, details are not described herein.
In an alternate embodiment of embodiment 3, organizing anti-overflow mechanism only includes extension and its guiding structure, is not wrapped
Include stop part etc..
It should be appreciated that although this specification is described in terms of embodiments, but not each embodiment only includes one
A independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should will say
As a whole, the technical solution in each embodiment may also be suitably combined to form those skilled in the art can for bright book
With the other embodiments of understanding.
The series of detailed descriptions listed above only for feasible embodiment of the invention specifically
Protection scope bright, that they are not intended to limit the invention, it is all without departing from equivalent implementations made by technical spirit of the present invention
Or change should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of operation anastomat comprising instrument body is arranged in the handle portion of the body proximal end and is arranged at described
The nail head of body distal end, wherein
The nail head includes nail bin groupware, anvil block and the anti-overflow mechanism of tissue；
The nail bin groupware includes nail bin and the cutter that is movably disposed in the nail bin；
The anvil block includes the knife anvil and nail anvil positioned at the distal cartridge end, and the knife anvil is equipped with cut corresponding with the cutter
Cut washer；
The nail bin can separately carry out opposite fortune at one relative to the anvil block between position and the near position that connects
It is dynamic；
The cutter can stretch out out of described nail bin and march to the cutting washer with being activated；
The anti-overflow mechanism of tissue includes two extensions that the anvil block is extended to from the nail bin, described two extensions
Tissue can be maintained between described two extensions；Described two extensions it is each it is comfortable its contacted with tissue it is opposite in
Side is equipped with a guiding structure along its length；
The guiding structure has a sliding surface and a supporting surface；The cutter has two ends extended by proximate
Portion；During the cutter is stretched out out of described nail bin and marches to the cutting washer, two ends of the cutter
Cooperate respectively with the guiding structure of described two extensions；
The anti-overflow mechanism of tissue further includes that both ends on the anvil block, making tissue be maintained at the cutting washer are arranged in
Between stop part, the stop part have a confined planes, it is described when described two extensions extend to the anvil block
Confined planes and the sliding surface are oppositely disposed to form a limiting slot；When the cutter marches to the cutting pad
When circle, the cutter is located in the limiting slot；
The distal face of the nail bin is equipped with the separator of separating tissues and two extensions.
2. operation anastomat as described in claim 1, it is characterised in that:
The end of the cutter has an end face and two side walls face, stretches out and marches to out of described nail bin in the cutter
During the cutting washer, the end face of the end of the cutter is held in the supporting surface, and the end is wherein
One side wall surface is slided along the sliding surface of described two extensions.
3. operation anastomat as claimed in claim 2, it is characterised in that:
In the guiding structure, the sliding surface connect to form L shape structure with the supporting surface.
4. operation anastomat as described in claim 1, it is characterised in that:
Set that there are two cooperation positions corresponding with described two extensions respectively on the anvil block；Two cooperation position difference
On the side at the cutting washer both ends, so that the cutter is directed at the cutting washer and marches to the cutting washer
It is interior；The stop part is located at the inside of the cooperation position with separating tissues and extension.
5. the operation anastomat as described in any one of claims 1 to 3, it is characterised in that:
The nail head further includes the anti-rotation structure for preventing described two extension radial rotatings.
6. operation anastomat as claimed in claim 5, it is characterised in that:
The anti-rotation structure includes the sliding slot being arranged in the nail bin, and the extension is slided along the sliding slot in the axial direction,
The sliding slot prevents the radial rotating of described two extensions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511027744.3A CN106923881B (en) | 2015-12-31 | 2015-12-31 | A kind of operation anastomat |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511027744.3A CN106923881B (en) | 2015-12-31 | 2015-12-31 | A kind of operation anastomat |
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| CN106923881A CN106923881A (en) | 2017-07-07 |
| CN106923881B true CN106923881B (en) | 2019-07-02 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108125697B (en) * | 2017-12-21 | 2024-05-31 | 苏州英途康医疗科技有限公司 | Surgical instrument |
| CN108113722B (en) * | 2017-12-21 | 2024-05-28 | 苏州英途康医疗科技有限公司 | Surgical instrument |
| CN216060619U (en) * | 2021-09-06 | 2022-03-18 | 江苏风和医疗器材股份有限公司 | Staple cartridge assembly and surgical instrument |
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| WO2001091646A1 (en) * | 2000-05-30 | 2001-12-06 | Ethicon Endo-Surgery (Europe) Gmbh | Surgical stapling instrument |
| CN1672646A (en) * | 2003-12-30 | 2005-09-28 | 伊西康内外科公司 | Slotted pins guiding knife in a curved cutter stapler |
| CN102228386A (en) * | 2010-09-16 | 2011-11-02 | 北京中法派尔特医疗设备有限公司 | Forceps opening assembly with guiding structure and stitching instrument adopting forceps opening assembly |
| CN102835982A (en) * | 2011-06-21 | 2012-12-26 | 伊西康内外科公司 | Linear stitching instrument with multifunctional retaining pin assembly |
| CN103908313A (en) * | 2012-12-29 | 2014-07-09 | 苏州天臣国际医疗科技有限公司 | Surgical operating instrument |
| CN205307033U (en) * | 2015-12-31 | 2016-06-15 | 苏州天臣国际医疗科技有限公司 | Operation anastomat |
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| WO2001091646A1 (en) * | 2000-05-30 | 2001-12-06 | Ethicon Endo-Surgery (Europe) Gmbh | Surgical stapling instrument |
| CN1672646A (en) * | 2003-12-30 | 2005-09-28 | 伊西康内外科公司 | Slotted pins guiding knife in a curved cutter stapler |
| CN102228386A (en) * | 2010-09-16 | 2011-11-02 | 北京中法派尔特医疗设备有限公司 | Forceps opening assembly with guiding structure and stitching instrument adopting forceps opening assembly |
| CN102835982A (en) * | 2011-06-21 | 2012-12-26 | 伊西康内外科公司 | Linear stitching instrument with multifunctional retaining pin assembly |
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| CN205307033U (en) * | 2015-12-31 | 2016-06-15 | 苏州天臣国际医疗科技有限公司 | Operation anastomat |
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| CN106923881A (en) | 2017-07-07 |
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Address after: 215021 No. 278 Dongping Street, Suzhou Industrial Park, Jiangsu Province Patentee after: Tianchen International Medical Technology Co., Ltd Address before: 215021, 1355 international science and Technology Park, Jinji Lake Avenue, Suzhou Industrial Park, Jiangsu, 3 21A Patentee before: TOUCHSTONE INTERNATIONAL MEDICAL SCIENCE Co.,Ltd. |
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