CN209499810U - Knob assembly and circular-pipe anastomat - Google Patents
Knob assembly and circular-pipe anastomat Download PDFInfo
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- CN209499810U CN209499810U CN201822127609.1U CN201822127609U CN209499810U CN 209499810 U CN209499810 U CN 209499810U CN 201822127609 U CN201822127609 U CN 201822127609U CN 209499810 U CN209499810 U CN 209499810U
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- auxiliary section
- matching piece
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Abstract
The utility model provides a kind of knob assembly and circular-pipe anastomat, wherein knob assembly includes knob body, clutch part and knob rear cover, the first auxiliary section is provided in knob body, drive screw rod along the axial movement of stapler when knob body rotates, it is provided with the second auxiliary section on clutch part, is provided with pressure spring between knob rear cover and clutch part.Knob assembly is divided into knob body and clutch part by the utility model, before the resistance suffered by the knob body reaches preset value, rotation clutch part can drive knob body to rotate together, knob body can drive nail-anvil assembly along the axial movement of stapler and close to nail bin, after the resistance suffered by the knob reaches preset value, clutch part can not drive knob body to rotate, knob assembly at this time enters failure mode, gap between nail-anvil assembly and nail bin remains unchanged, without squeezing tissue excessively.
Description
Technical field
The utility model relates to the field of medical instrument technology, and in particular to a kind of knob assembly and circular-pipe anastomat.
Background technique
Disease of digestive tract is high-incidence one of the disease of the mankind, over the course for the treatment of, is often used circular-pipe anastomat and replaces doctor
Raw manual operations carries out the physiological tissues such as alimentary canal identical.Circular-pipe anastomat is a kind of common surgical operating instrument,
The inside bookbinding form of axis is mostly used greatly, end-to-end or end pair is formed to physiological tissues such as oesophagus, stomach, enteron aisles during operation
Side coincide, and two sections of tissues are containing when coincideing is contained in stapler, and circular anastomosis mouth, weight are organizationally formed after the completion of percussion
Body passageway is built.
In the prior art, circular-pipe anastomat includes stapler ontology, the operation handlebar for being flexibly connected the stapler ontology
Hand and nail-anvil assembly with the body fits.The stapler ontology includes the nail bin groupware set on distal end, the nail bin
Component includes annular nail bin, cutter；And the knob set on body proximal end, the knob can be rotated relative to ontology, the kiss
The inside of clutch ontology further includes proximally to the nail anvil shaft of distal end setting.It is proximally and distally for operator herein
, it be proximal end apart from the closer one end of operator apart from the farther away one end of operator is remote closer to one end of surgery location
End.In stapler, inner and outer is opposite with for the axle center of stapler, and the side close to axle center is inside, separate
The side in axle center is outside.The nail-anvil assembly includes nail anvil, the nail-anvil hat that nail anvil distal end is arranged in and is arranged inside nail anvil
Knife anvil, nail-anvil assembly can be directly connected to the distal end of nail anvil shaft or be connect by nail anvil shaft coupling piece.In tumor operation mistake
Cheng Zhong, after detachment removes tumor tissues, nail anvil shaft is pierced by from the pocket of stump tissue, is configured at the distal end of stapler ontology, is revolved
Rotate button, after so that the distance between nail-anvil assembly and nail bin is gradually reduced and is reached a suitable distance, reach can cock,
Operating handle percussion instrument could be held to complete to coincide.With the continuous development of medical instrument, circular-pipe anastomat is also increasingly
It is widely used in the treatment of the diseases such as hemorrhoid.
Rotation knob, make nail-anvil assembly to nail bin it is close during, sometimes tissue closure in place after, knob is still
It is rotatable, will continue between such nail-anvil assembly and nail bin it is close, continue compress tissue, excessive pressure is caused to tissue
It squeezes, in some instances it may even be possible to tissue can be crushed, it is very unfavorable to surgical outcome.
Utility model content
For the problems of the prior art, the purpose of this utility model is to provide a kind of knob assemblies and tubular type to coincide
Device, when rotating knob, after the resistance suffered by the knob reaches resistance preset value, knob will be unable to transmit bigger torque again, this
When knob enter failure mode, the gap between nail-anvil assembly and nail bin remains unchanged, without making tissue by excessive pressure
It squeezes.
The utility model embodiment provides a kind of knob assembly, is used for circular-pipe anastomat, the inside of the stapler is set
It is equipped with a screw rod；The knob assembly includes:
Knob body, the knob body are sheathed on the outside of the screw rod, are provided with actuator in the knob body,
The proximal end face of the actuator is provided with the first auxiliary section, and screw rod is driven to move when the knob body rotates along the axial direction of stapler
It is dynamic；
Clutch part, positioned at the proximal end of the actuator, the distal face of the clutch part is provided with the second auxiliary section, and described
Two auxiliary sections can be moved axially relative to the first auxiliary section, and when second auxiliary section and the first auxiliary section are engaged, institute
The rotation for stating clutch part drives knob body rotation；
Knob rear cover is set positioned at the proximal end of the knob body, and between the knob rear cover and the proximal end face of clutch part
It is equipped with pressure spring.
Optionally, first auxiliary section includes at least one first cooperation for being set to the proximal end face of the actuator
Part, second auxiliary section include and one-to-one second matching piece of first matching piece.
Optionally, first matching piece is the first protrusion, and second matching piece is the second protrusion.
Optionally, first matching piece is the first protrusion, and second matching piece is groove.
Optionally, first matching piece is groove, and second matching piece is protrusion.
Optionally, first matching piece includes first side, and second matching piece includes third side, the clutch
When part is rotated in a first direction by external force, the first side of first matching piece and the third side of second matching piece are connect
Touching cooperation, and the first side of first matching piece is tilted towards first direction.
Optionally, first matching piece further includes second side, and second matching piece further includes the 4th side, described
When clutch part is rotated in a second direction by external force, the 4th side of the second side of first matching piece and second actuator
Face contact cooperation.
Optionally, the second side of first matching piece is right-angle surface, or, the second side court of first matching piece
It is less than the inclined degree of the first side to the inclined degree of second direction inclination and the second side of the first matching piece.
Optionally, the first side of first matching piece and the third side of the second matching piece are plane or match
Curved surface, the second side of first matching piece and the 4th side of the second matching piece are plane or the curved surface matched.
Optionally, the clutch part includes clutch ring, and the clutch ring set is set to the outside of the knob body.
Optionally, the stapler further includes knob shell, and the inner surface of the knob shell is provided with the 4th auxiliary section；
The clutch part is located at the inside of the knob shell, and the side of the clutch part is provided with third auxiliary section, institute
It states third auxiliary section to match with the 4th auxiliary section, so that the knob shell can drive clutch part to rotate, and the clutch
Part can be moved axially relative to knob shell.
Optionally, the third auxiliary section includes at least one guide slot positioned at the side of clutch part, and the described 4th matches
Conjunction portion includes orienting muscle correspondingly with the guide slot, and the orientation muscle extends along the axial direction of stapler and protrudes into institute
It states in guide slot, and the guide slot can be moved along the extending direction of orientation muscle.
Optionally, the third auxiliary section includes at least one orientation muscle positioned at the side of clutch part, and the described 4th matches
Conjunction portion includes extending along the axial direction of stapler with the one-to-one guide slot of the orientation muscle, the orientation muscle and protruding into institute
It states in guide slot, and the orientation muscle can be moved along the extending direction of itself.
Optionally, the inner surface of the knob shell is provided with stage portion, and the stepped portions are remote in the clutch part
End face.
Optionally, the distal end of the knob rear cover is provided with rear cover internal screw thread, the proximal end of the knob body be provided with
This extracorporeal thread that the rear cover internal screw thread matches.
The utility model embodiment also provides a kind of circular-pipe anastomat, including the knob assembly.
Knob assembly and circular-pipe anastomat provided by the utility model have the advantages that
The utility model provides a kind of knob assembly for circular-pipe anastomat, and knob assembly is divided into knob body
And clutch part, before the resistance suffered by the knob body reaches resistance preset value, rotation clutch part can drive knob body together
Rotation, knob body can drive nail-anvil assembly along the axial movement of stapler and close to nail bin, and the resistance suffered by the knob reaches
After resistance preset value, clutch part can not drive knob body to rotate, and knob assembly at this time enters failure mode, nail-anvil assembly
Gap between nail bin remains unchanged, without squeezing tissue excessively.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other spies of the utility model
Sign, objects and advantages will become more apparent upon.
Fig. 1 is the structural schematic diagram of the stapler of an embodiment of the present invention；
Fig. 2 is the knob assembly of an embodiment of the present invention and the schematic diagram of screw rod cooperation；
Fig. 3 is the structural schematic diagram of the knob body of an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the clutch ring of an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of the knob shell of an embodiment of the present invention；
Fig. 6 is the structural schematic diagram of the first knob rear cover of an embodiment of the present invention；
Fig. 7 is the original state lower knob ontology of an embodiment of the present invention and the structural schematic diagram of clutch ring cooperation；
Fig. 8 is the knob assembly failure state lower knob ontology of an embodiment of the present invention and the structure of clutch ring cooperation
Schematic diagram.
Appended drawing reference:
1 knob body, 3 pressure spring
11 first raised 4 knob shells
111 first sides 41 orient muscle
112 second side, 42 stage portion
12 5 first knob rear covers of extracorporeal thread
13 ontology internal screw thread, 51 rear cover internal screw thread
14 actuator, 6 screw rod
2 clutch ring, 7 second knob rear cover
21 second raised 81 stapler body housings
211 third side, 82 nail bin groupware
212 the 4th side, 83 nail-anvil assembly
22 guide slot, 84 handle
The distal face of 23 clutch rings
Specific embodiment
Example embodiment is more specifically described with reference to the drawings.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, thesing embodiments are provided so that this is practical new
Type will be full and complete, and the design of example embodiment is comprehensively communicated to those skilled in the art.It is identical in figure
Appended drawing reference indicate same or similar structure, thus repetition thereof will be omitted.
The technical issues of in order to solve in the prior art, the utility model provide a kind of knob assembly, the set of knobs
Part includes knob body, clutch part and knob rear cover, and the knob body is sheathed on the outside of the screw rod, the knob body
On be provided with actuator, the proximal end face of the actuator is provided with the first auxiliary section, and the knob body drives screw rod when rotating
Along the axial movement of stapler；The clutch part is located at the proximal end of the actuator, and the distal face of the clutch part is provided with
Two auxiliary sections, second auxiliary section can be moved axially relative to the first auxiliary section.Second auxiliary section has and can drive
The first state of first auxiliary section, and the second state of first auxiliary section cannot be driven.When second auxiliary section
When in first state, the rotation of the clutch part drives knob body rotation, when second auxiliary section is in the second state
When, the rotation of the clutch part does not drive knob body to rotate, and the clutch part proximally does axis relative to the knob body
To movement；The knob rear cover is located at the proximal end of the knob body, and between the knob rear cover and the proximal end face of clutch part
It is provided with pressure spring.
Therefore, knob assembly is divided into knob body and clutch part by the utility model, is in addition set in the proximal end of knob body
Set knob rear cover and positioning pressure spring.The clutch part will receive the obstruction of pressure spring towards the axial movement of the proximal end of stapler,
That is the axial movement of clutch part needs to overcome the spring force of pressure spring.The actuator and clutch part of knob body have collectively constituted clutch
Structure.When operator rotates knob assembly, it is first subjected to that operator rotates power drive and what is rotated is clutch part.When knob sheet
Before resistance suffered by body reaches resistance preset value, clutch can transmit the torque of the resistance greater than knob body, knob
Ontology and clutch part linkage, rotation clutch part can drive knob body to rotate together, and knob body can drive nail-anvil assembly along kiss
The axial movement of clutch and close to or far from nail bin；After the resistance suffered by the knob reaches resistance preset value, clutch without
Method transmitting is greater than the torque of the resistance of knob body, and clutch part is detached to the proximal end of stapler is mobile with actuator, and is oppressed
Pressure spring, clutch part can not drive knob body to rotate at this time, and knob assembly enters failure mode, between nail-anvil assembly and nail bin
Gap remains unchanged, without squeezing tissue excessively.Wherein, the size of resistance preset value by actuator and clutch part it
Between the inclination angle of contact surface and the spring force of pressure spring determined that the size of resistance preset value corresponds to nail-anvil assembly and nail bin group
To the size of the maximum tissue squeeze force of tissue compression between part.
The utility model embodiment also provides a kind of circular-pipe anastomat, and the knob assembly is located at the close of the stapler
End, the distal end of the stapler are provided with a nail bin groupware and a nail-anvil assembly, and the nail-anvil assembly passes through a nail anvil axis connection
To the screw rod distal end or be connected directly to the distal end of screw rod.When knob body rotates, it can be driven and be followed closely by nail anvil shaft
Anvil assembly along stapler axial movement, close to or far from nail bin groupware.
Successful original state is just docked with the stapler ontology with nail bin groupware in nail-anvil assembly, along first direction
Knob is rotated, clutch part rotation, at this time since tissue not yet clamps, resistance suffered by knob body is not up to resistance preset value,
Clutch can transmit the torque of the resistance greater than knob body, and pressure spring keeps original state, not deformed or generation one
Quantitative initial deformation amount, clutch part drive knob ontology are also rotated in a first direction, i.e. the second auxiliary section is in first state
And the first auxiliary section is driven, nail-anvil assembly is driven by nail anvil shaft and screw rod and moves closer to nail bin groupware.
Grip tissue and then rotation knob, knob body will receive obstruction first between nail-anvil assembly and nail bin groupware
The resistance that direction rotates, this resistance is the tissue squeeze force corresponded between nail-anvil assembly and nail bin groupware, at this point, only revolving
The rotation torque that the resistance is applied more than on button ontology can just be rotated in a first direction knob body.When the resistance is pre- greater than resistance
If when value, if applying bigger turning moment rotation clutch part, the reaction force for the turning moment that knob body is subject to is given to
On clutch part, which can overcome the spring force of pressure spring and oppress pressure spring and be deformed, and clutch part can be generated to stapler
The axial movement of proximal end, and make the first auxiliary section of the second auxiliary section disengaging knob body of clutch part, i.e. the second auxiliary section
In the second state without driving the first auxiliary section, at this point, the turning moment that operator applies can not be transmitted to rotation by clutch part
On button ontology, knob body not can rotate, and what clutch part carried out is invalid idle running, and can issue the first auxiliary section and the
Two auxiliary sections thread off when sound of rattling away, knob assembly is in failure state at this time, the nail between nail-anvil assembly and nail bin groupware at
Type gap remains unchanged, and tissue will not be squeezed excessively.
With reference to the accompanying drawing to an embodiment of the present invention provide circular-pipe anastomat and knob assembly therein into
Row is discussed in detail.
As shown in Figure 1, showing the structure of the stapler of an embodiment.Wherein, stapler includes stapler ontology and nail
Anvil assembly 83, wherein stapler ontology include stapler shell 81, positioned at the distal end of stapler shell 81 nail bin groupware 82,
Positioned at the knob assembly of the proximal end of stapler shell 81 and proximally to the screw rod 6 of distal end setting, nail bin groupware 82 includes ring
Staple storehouse and cutter, nail-anvil assembly 83 include nail anvil and nail anvil shaft, and nail anvil is pivotally connected to the distal end of screw rod by nail anvil.Set of knobs
When part rotates, passes sequentially through the screw rod and nail anvil shaft drives nail-anvil assembly 83 to move axially, far from or close to nail bin groupware 82.
Certainly, in another kind of circular-pipe anastomat, such as the previously mentioned circular-pipe anastomat for doing hemorrhoid operation,
Its nail-anvil assembly 83 is directly to connect with stapler ontology, and nail-anvil assembly 83 cannot be taken off from stapler ontology, at this time
I.e. nail-anvil assembly 83 does not include nail anvil shaft, and nail anvil is directly fixedly connected with the distal end of screw rod 6.The utility model is with such stapler
For be illustrated.
As figures 2-6, the knob assembly includes knob body 1, clutch part and knob rear cover, the knob body 1
It is sheathed on the outside of the screw rod 6, actuator 14, the proximal end face setting of the actuator 14 are provided in the knob body 1
There is the first auxiliary section, knob body 1 is internally provided with ontology internal screw thread 13, and ontology internal screw thread 13 and the screw rod 6 of stapler are matched
It closes, drives screw rod 6 along the axial movement of stapler when the knob body 1 rotates；The clutch part is located at the actuator 14
Proximal end, the distal face of the clutch part is provided with the second auxiliary section, and second auxiliary section can be relative to the first auxiliary section axis
To movement, second auxiliary section has the first state that can drive first auxiliary section, and cannot drive described first
Second state of auxiliary section.When second auxiliary section is in first state, the rotation of the clutch part drives knob body 1
Rotation, when second auxiliary section is in the second state, the rotation of the clutch part does not drive knob body to rotate, it is described from
Component proximally axially moves relative to the knob body；The knob rear cover, positioned at the proximal end of the knob body 1,
And pressure spring 3 is provided between the knob rear cover and the proximal end face of clutch part.
In this embodiment, the clutch part includes clutch ring 2, and clutch ring 2 is sheathed in knob body 1.Described first
Auxiliary section includes at least one first matching piece for being set to the proximal end face of the actuator 14, second auxiliary section include with
One-to-one second matching piece of first matching piece.First matching piece can be the first protrusion 11, and described second matches
Component can be the second protrusion 21.In other alternate embodiments, the first matching piece and the second matching piece also be can choose
It is protrusion, the groove or the first matching piece that the second matching piece is and protrusion matches for other structures, such as the first matching piece
For groove, the second matching piece is the protrusion etc. matched with groove, is belonged within the protection scope of the utility model.Into one
Preferably, first protrusion 11 includes first side 111 to step, and second protrusion 21 includes third side 211, the clutch
When ring 2 is rotated in a first direction by external force, the third side of the first side 111 of first protrusion 11 and second protrusion 21
Face 211 is engaged, and the first side 111 of first protrusion 11 is tilted towards first direction.And the of the second protrusion 11
The inclined direction and first side 111 of three sides 211 are adapted.
In the stapler proximally visual angle towards distal end, first direction is clockwise that second direction is counterclockwise
Direction.When being rotated in a clockwise direction clutch ring 2, and knob body 1 being driven to be rotated in a clockwise direction, screw rod 6 to coincide
The proximal end of device is mobile, and drives nail-anvil assembly 83 close to nail bin groupware 82, is being rotated in the counterclockwise direction clutch ring 2, and drive
When knob body 1 is rotated in the counterclockwise direction, screw rod 6 is mobile to the distal end of stapler, and drives nail-anvil assembly 83 far from nail bin
Component 82.
In this embodiment, first side 111 and third side 211 are inclined-plane cooperations, are cooperated by inclined-plane, in knob sheet
When the resistance that body 1 is subject to is greater than resistance preset value, the clutch ring 2 is rotated in a first direction by external force and is applied to knob body 1
When adding a biggish turning moment, knob body 1 is decomposed to the reaction force of clutch ring 2 by inclined-plane, edge after decomposition
Stapler axial direction pushes dynamic clutch ring 2 to the movement of stapler proximal end, makes pressure spring 3 to overcome the elastic force of pressure spring 3
Deformation, so that knob body 1 is gradually mutually disengaged with clutch ring 2.Resistance preset value can be by the spring force size of pressure spring 3
And the inclined degree determination of first side 111 and third side 211.Further, since 111 He of first side of the first protrusion 11
The setting of the inclined degree of the third side 211 of second protrusion 21 so that clutch ring 2 rotate in the clockwise direction and not with knob
When ontology 1 links, proximally there is the second protrusion 21 of displacement to be easier to be detached from the first protrusion 11.
In this embodiment, first protrusion 11 further includes second side 112, and second protrusion 21 further includes the 4th
Side 212, when the clutch ring 2 is rotated in a second direction by external force, the second side 112 of first protrusion 11 and described the
4th side of two protrusions 21 is engaged, in favor of that can drive knob body 1 when rotating in a second direction clutch ring 2
It rotates in a second direction and increases the distance between nail anvil 83 and nail bin groupware 82.
In this embodiment, the second side 112 of first protrusion 11 is right-angle surface, accordingly, the second protrusion 21
4th side 212 is also right-angle surface.Right-angle surface refers to the second side 112 of the first protrusion 11 perpendicular to actuator 14 herein
Surface.In other alternative embodiments, the second side 112 of first protrusion 11 can also be tilted towards second direction
And first protrusion 11 second side 112 inclined degree less than the first protrusion 11 first side 111 inclined degree, it is corresponding
Ground, the inclined direction and angle and second side 112 of the 4th side 212 of the second protrusion 21 are adapted.In this way, can make
Clutch ring 2 is obtained when rotating in a second direction, the second protrusion 21 is not easy to be detached from the first protrusion 11, so as to prevent knob
Component along first direction after screwing, and when needing reverse operating, is unable to drive knob body 1 and rotates in a second direction increase
The distance between nail-anvil assembly 83 and nail bin groupware 82.
The third side 211 of the first side 111 of first protrusion 11 and the second protrusion 21 is plane or matches
Curved surface, the 4th side 212 of the second side 112 of first protrusion 11 and the second protrusion 21 is plane or matches
Curved surface.
In this embodiment, the knob rear cover includes the first knob rear cover 5 and the second knob rear cover 7, after the first knob
The distal end of lid 5 is provided with rear cover internal screw thread 51, and the proximal end of the knob body 1 is provided with to be matched with the rear cover internal screw thread 51
This extracorporeal thread 12, the first knob rear cover 5 cooperated by the proximal end of screw thread and knob body 1, and the second knob rear cover 7 can pacify
Proximal end loaded on the first knob rear cover 5.First knob rear cover 5 can provide support and limit for the proximal end of pressure spring 3.
As shown in FIG. 7 and 8, it respectively illustrates and cooperates in the initial state with failure state lower knob ontology 1 and clutch ring 2
Structure.
Successful original state has just been docked with stapler ontology in nail-anvil assembly 83 or organizes just to be included into first
Beginning state, knob assembly are in original state, and operator is rotated in a first direction clutch ring 2, at this time since tissue not yet clamps,
Resistance suffered by knob body 1 is not up to resistance preset value, clutch can by the first protrusion 11 and the second protrusion 21 it
Between the torque of the cooperation resistance that will be greater than knob body 1 be transmitted to knob body 1 from clutch ring 2, at this time knob body 1 give from
The reaction force of cyclization 2 is not enough to overcome the elastic force of pressure spring 3.As shown in fig. 7, pressure spring 3 keeps original state at this time, do not generate
A certain amount of initial deformation amount is deformed or generates, the second auxiliary section is in first state, the second protrusion 21 and knob of clutch ring 2
First protrusion 11 of ontology 1 comes into full contact with cooperation, and the rotation of clutch ring 2 drives knob body 1 to be rotated in a first direction, nail anvil group
Part 83 is driven gradually close to each other with nail bin groupware 82 by screw rod 6.
When reaching suitable distance between nail-anvil assembly and nail bin groupware, while suitable pre- is reached to the squeeze force of tissue
When definite value, then it is rotated in a first direction the clutch ring 2 of knob assembly, knob body 1 will receive obstruction, and it is rotated in a first direction
Resistance, at this point, knob sheet can be just rotated in a first direction by being only applied more than the rotation torque of the resistance in knob body 1
Body 1.I.e. when the resistance is greater than resistance preset value, if operator applies the rotation torque for being less than the resistance to clutch ring 2, from
Cyclization 2 by knob body 1 obstruction and can not rotate, if operator is applied more than the turning moment rotation clutch of the resistance
The reaction force of ring 2, the turning moment that knob body 1 is subject to passes through the cooperation transmitting between the first protrusion 11 and the second protrusion 21
Onto clutch ring 2, the component of the reaction force in axial direction can overcome the spring force of pressure spring 3 and oppress pressure spring 3 and be deformed.
As shown in figure 8, clutch ring 2 can generate the axial movement to stapler proximal end, and the second protrusion 21 of clutch ring 2 is made to be detached from rotation
First protrusion 11 of button ontology 1, i.e. the second auxiliary section are in the second state, at this point, the rotation that clutch ring 2 can not apply operator
Torque is transmitted in knob body 1, and knob body 1 not can rotate, and what clutch ring 2 carried out is invalid idle running, and can be with
The sound of rattling away when the first protrusion 11 and the second 21 tripping of protrusion is issued, knob assembly is in failure state, nail-anvil assembly 83 at this time
Nail forming gap between nail bin groupware 82 remains unchanged, and tissue will not be squeezed excessively.If operator hears sound of rattling away
Or can be determined that out that current nail-anvil assembly 83 is moved into position according to the feel for rotating knob assembly when failure state, it can be with
Execute the percussion operation of stapler.
Further, the stapler further includes knob shell 4, and the inner surface of the knob shell 4 is provided with the 4th and matches
Conjunction portion；The clutch ring 2 is located at the inside of the knob shell 4, and the side of the clutch ring 2 is provided with third auxiliary section, institute
Third auxiliary section is stated to match with the 4th auxiliary section so that the knob shell 4 can drive clutch ring 2 rotate, and it is described from
Cyclization 2 can be moved axially relative to knob shell 4.
When operator rotates knob assembly, rotation is the knob shell 4 to link with clutch ring 2, and knob shell 4
To the proximal direction movement of stapler and initial position is back to without limitation on clutch ring 2.In this embodiment, the third is matched
Conjunction portion includes at least one guide slot 22 of the axial sides positioned at clutch ring 2, and the 4th auxiliary section includes and the orientation
Orientation muscle 41, the orientation muscle 41 extend along the axial direction of stapler and can protrude into the guide slot 22 slot 22 correspondingly
In, and the guide slot 22 can be moved along the extending direction of orientation muscle 41, to realize that clutch ring 2 can be with knob shell 4 together
Rotation, and clutch ring 2 is axially movable relative to knob shell 4, the orientation muscle 41 is that the guide slot 22 provides guiding work
With.Preferably, the guide slot 22 is respectively equipped with two with the orientation muscle 41, and be it is arranged symmetrically, to realize putting down for structure
The balance of weighing apparatus and stress, naturally it is also possible to be multiple or asymmetric setting.
In other embodiments, the third auxiliary section also may include positioned at clutch ring 2 axial sides at least
One orientation muscle, the 4th auxiliary section include with the one-to-one guide slot of the orientation muscle, the orientation muscle is along stapler
Axial direction extend and protrude into the guide slot, and the orientation muscle can be moved along the extending direction of itself, to realize
Clutch ring 2 can be rotated together with knob shell 4, and clutch ring 2 can be moved axially relative to knob shell 4.
Further, the inner surface of the knob shell 4 is provided with L-shaped stage portion 42, and the stage portion 42 is located at institute
State the distal face of clutch ring 2.The use of stage portion 42 can limit the movement of clutch ring 2 towards stapler distal direction
Position.
Circular-pipe anastomat provided by the utility model has the advantage that
The utility model provides a kind of knob assembly for circular-pipe anastomat, and knob assembly is divided into knob body
And clutch part, before the resistance suffered by the knob body reaches resistance preset value, rotation clutch part can drive knob body together
Rotation, knob body can drive nail-anvil assembly along the axial movement of stapler and close to nail bin, and the resistance suffered by the knob reaches
After resistance preset value, clutch part can not drive knob body to rotate, and knob assembly at this time enters failure mode, nail-anvil assembly
Gap between nail bin remains unchanged, without squeezing tissue excessively.
It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined
Assert that the specific implementation of the utility model is only limited to these instructions.For the ordinary skill of the utility model technical field
For personnel, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, should all regard
To belong to the protection scope of the utility model.
Claims (16)
1. a kind of knob assembly, which is characterized in that be used for circular-pipe anastomat, the stapler is internally provided with a screw rod；
The knob assembly includes:
Knob body, the knob body are sheathed on the outside of the screw rod, and actuator is provided in the knob body, described
The proximal end face of actuator is provided with the first auxiliary section, drives screw rod along the axial movement of stapler when the knob body rotates；
Clutch part, positioned at the proximal end of the actuator, the distal face of the clutch part is provided with the second auxiliary section, and described second matches
Conjunction portion can be moved axially relative to the first auxiliary section, and when second auxiliary section and the first auxiliary section are engaged, it is described from
The rotation of component drives knob body rotation；
Knob rear cover is provided with positioned at the proximal end of the knob body, and between the knob rear cover and the proximal end face of clutch part
Pressure spring.
2. knob assembly according to claim 1, which is characterized in that first auxiliary section includes being set to the driving
At least one first matching piece of the proximal end face of part, second auxiliary section include and first matching piece one-to-one
Two matching pieces.
3. knob assembly according to claim 2, which is characterized in that first matching piece is the first protrusion, described the
Two matching pieces are the second protrusion.
4. knob assembly according to claim 2, which is characterized in that first matching piece is the first protrusion, described the
Two matching pieces are groove.
5. knob assembly according to claim 2, which is characterized in that first matching piece is groove, and described second matches
Component is protrusion.
6. the knob assembly according to any one of claim 2 to 5, which is characterized in that first matching piece includes the
One side, second matching piece includes third side, and when the clutch part is rotated in a first direction by external force, described first matches
The first side of component and the third side of second matching piece are engaged, and the first side court of first matching piece
It is tilted to first direction.
7. knob assembly according to claim 6, which is characterized in that first matching piece further includes second side, institute
Stating the second matching piece further includes the 4th side, when the clutch part is rotated in a second direction by external force, first matching piece
Second side and the 4th side of second matching piece are engaged.
8. knob assembly according to claim 7, which is characterized in that the second side of first matching piece is right angle
Face, or, the second side of first matching piece is tilted towards second direction and the inclination journey of the second side of the first matching piece
Degree is less than the inclined degree of the first side.
9. knob assembly according to claim 8, which is characterized in that the first side of first matching piece and second is matched
The third side of component is plane or the curved surface matched, and the of the second side of first matching piece and the second matching piece
Four sides are plane or the curved surface matched.
10. knob assembly according to claim 1, which is characterized in that the clutch part includes clutch ring, the clutch ring
It is sheathed on the outside of the knob body.
11. knob assembly according to claim 1, which is characterized in that the stapler further includes knob shell, the rotation
The inner surface of button shell is provided with the 4th auxiliary section；
The clutch part is located at the inside of the knob shell, and the side of the clutch part is provided with third auxiliary section, and described
Three auxiliary sections are matched with the 4th auxiliary section, so that the knob shell can drive clutch part to rotate, and the clutch part can
It is moved axially relative to knob shell.
12. knob assembly according to claim 11, which is characterized in that the third auxiliary section includes being located at clutch part
At least one guide slot of side, the 4th auxiliary section include orienting muscle correspondingly with the guide slot, the orientation
Muscle extends along the axial direction of stapler and protrudes into the guide slot, and the guide slot can be moved along the extending direction of orientation muscle
It is dynamic.
13. knob assembly according to claim 11, which is characterized in that the third auxiliary section includes being located at clutch part
At least one orientation muscle of side, the 4th auxiliary section includes and the one-to-one guide slot of the orientation muscle, the orientation
Muscle extends along the axial direction of stapler and protrudes into the guide slot, and the orientation muscle can be moved along the extending direction of itself
It is dynamic.
14. knob assembly according to claim 11, which is characterized in that the inner surface of the knob shell is provided with step
Portion, the stepped portions are in the distal face of the clutch part.
15. knob assembly according to claim 1, which is characterized in that the distal end of the knob rear cover is provided in rear cover
Screw thread, the proximal end of the knob body are provided with this extracorporeal thread matched with the rear cover internal screw thread.
16. a kind of circular-pipe anastomat, which is characterized in that including knob assembly described in any one of claims 1 to 15.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822127609.1U CN209499810U (en) | 2018-12-18 | 2018-12-18 | Knob assembly and circular-pipe anastomat |
| PCT/CN2019/126296 WO2020125675A1 (en) | 2018-12-18 | 2019-12-18 | Knob assembly and cylindrical anastomat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822127609.1U CN209499810U (en) | 2018-12-18 | 2018-12-18 | Knob assembly and circular-pipe anastomat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209499810U true CN209499810U (en) | 2019-10-18 |
Family
ID=68195516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822127609.1U Active CN209499810U (en) | 2018-12-18 | 2018-12-18 | Knob assembly and circular-pipe anastomat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209499810U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020125675A1 (en) * | 2018-12-18 | 2020-06-25 | 天臣国际医疗科技股份有限公司 | Knob assembly and cylindrical anastomat |
-
2018
- 2018-12-18 CN CN201822127609.1U patent/CN209499810U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020125675A1 (en) * | 2018-12-18 | 2020-06-25 | 天臣国际医疗科技股份有限公司 | Knob assembly and cylindrical anastomat |
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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: 215123 No. 278 Dongping Street, Suzhou Industrial Park, Suzhou City, Jiangsu Province Patentee before: TOUCHSTONE INTERNATIONAL MEDICAL SCIENCE Co.,Ltd. |
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