CN209529238U - Knob assembly and circular-pipe anastomat - Google Patents
Knob assembly and circular-pipe anastomat Download PDFInfo
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- CN209529238U CN209529238U CN201822132546.9U CN201822132546U CN209529238U CN 209529238 U CN209529238 U CN 209529238U CN 201822132546 U CN201822132546 U CN 201822132546U CN 209529238 U CN209529238 U CN 209529238U
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Abstract
The utility model provides a kind of knob assembly and circular-pipe anastomat, 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, the second auxiliary section is provided on clutch part, pressure spring is provided between regulating part and clutch part, regulating part can axially move with separate or close clutch part, change the reduction length of pressure spring.Knob assembly is divided into knob body and clutch part by the utility model, after the resistance suffered by the knob reaches resistance 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；Wherein the size of resistance preset value is related with the spring force of the pressure spring of clutch part proximal end, by changing the distance between regulating part and clutch part, the spring force of adjustable pressure spring, so as to adjust the size of resistance preset value.
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, and resistance preset value is adjustable.
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 axial movement is driven 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
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；
Regulating part is provided with a pressure spring positioned at the proximal end of the clutch part between the regulating part and the clutch part, and
The regulating part can be relative to the clutch part along the axial movement of stapler.
Optionally, the medial surface of the regulating part is provided with the second orientation portion, and the regulating part is sheathed on the knob sheet
The proximal end of body, the proximal end of the knob body are provided with the first orientation portion, and second orientation portion matches with first orientation portion
It closes, and second orientation portion can only be moved axially relative to first orientation portion.
It optionally, further include that torsion adjusts cover, the distal end that the torsion adjusts cover is matched with the proximal end of the regulating part,
When the torsion adjusts cover relative to knob body rotation, drive the regulating part along the axial movement of stapler.
Optionally, the matching surface of the torsion adjusts cover distal end and the proximal end of the regulating part is helicoid or institute
The matching surface for stating distal end and the proximal end of the regulating part that torsion adjusts cover is inclined-plane.
It optionally, further include knob shell, the proximal end medial surface of the knob shell is provided with the limiting slot of arc, described
The lateral surface that torsion adjusts cover is provided with limited block, and the limited block is embedded in the limiting slot, and the limited block can phase
The limiting slot is rotated in the expanded range of the limiting slot；
Or, the proximal end medial surface of the knob shell is provided with limited block, the lateral surface that the torsion adjusts cover is provided with
The limiting slot of arc, the limited block are embedded in the limiting slot, and the limited block can be relative to the limiting slot in institute
State rotation in the expanded range of limiting slot.
Optionally, first orientation portion includes at least one first axially extending guide slot along stapler, described
Second orientation portion is that muscle is oriented with first guide slot one-to-one first, and it is fixed that the first orientation muscle protrudes into described first
It can move into slot and along the extending direction of first guide slot；Or
First orientation portion includes at least one first axially extending orientation muscle along stapler, second orientation
Portion be with the first orientation one-to-one first guide slot of muscle, the first orientation muscle protrude into first guide slot and
It can be moved along the extending direction of itself.
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；
Or, first matching piece is the first protrusion, second matching piece is groove；
Or, first matching piece is groove, 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 matching piece
Face contact cooperation；
The second side of first matching piece is right-angle surface, or, the second side direction second of first matching piece
The inclined degree of direction inclination and the second side of the first matching piece is less than the inclined degree of the first side.
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 second guide slot positioned at the side of clutch part, and described the
Four auxiliary sections include and the one-to-one second orientation muscle of second guide slot, axial direction of the second orientation muscle along stapler
Direction extends and protrudes into second guide slot, and second guide slot can be moved along the extending direction of the second orientation muscle；
Or
The third auxiliary section includes at least one the second orientation muscle positioned at the side of clutch part, the 4th auxiliary section
Including orienting axial direction extension of the muscle along stapler with the second orientation one-to-one second guide slot of muscle, described second
And it protrudes into second guide slot, and the second 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.
It optionally, further include a knob rear cover, the distal end of the knob rear cover is provided with rear cover internal screw thread, the knob sheet
The proximal end of body is provided with this extracorporeal thread matched with the rear cover internal screw thread.
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 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；Wherein preset value is nail-anvil assembly and nail
The pressure limit of the tissue clamped between the component of storehouse, the size of resistance preset value and the spring force of the pressure spring of clutch part proximal end have
It closes, by changing the distance between regulating part and clutch part, the spring force of adjustable pressure spring is default so as to adjust resistance
The size of value realizes the adjusting of maximum tissue squeeze force.
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 and Fig. 6 is the structural schematic diagram of the knob shell of an embodiment of the present invention；
Fig. 7 is the structural schematic diagram of the regulating part of an embodiment of the present invention；
Fig. 8 is that the torsion of an embodiment of the present invention adjusts the structural schematic diagram of cover；
Fig. 9 is the structural schematic diagram of the first knob rear cover of an embodiment of the present invention；
Figure 10 be an embodiment of the present invention original state under clutch ring and pressure spring schematic diagram；
Figure 11 be an embodiment of the present invention failure state under clutch ring and pressure spring schematic diagram.
Appended drawing reference:
1 knob body, 42 stage portion
11 first raised 43 limiting slots
111 first side, 5 regulating part
112 second side, 51 first helicoid
12 52 first orientation portions of extracorporeal thread
13 ontology internal screw thread, 6 torsion adjusts cover
14 actuator, 61 second helicoid
15 first guide slot, 62 limiting section
2 clutch ring, 7 first knob rear cover
21 second raised 71 rear cover internal screw threads
211 third side, 81 stapler body housing
212 the 4th side, 82 nail bin groupware
22 second guide slot, 83 nail-anvil assembly
84 handle of distal face of 23 clutch rings
3 pressure spring, 85 screw rod
4 knob shell, 9 second knob rear cover
41 second orientation muscle
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, are used for tubular type
Stapler, the circular-pipe anastomat include knob body, clutch part and regulating part, and the knob body is sheathed on the screw rod
Outside, be provided with actuator in the knob body, the proximal end face of the actuator is provided with the first auxiliary section, the knob
Screw rod axial movement is driven when ontology rotates；The clutch part is located at the proximal end of the actuator, the distal face of the clutch part
Be provided with the second auxiliary section, second auxiliary section can be moved axially relative to the first auxiliary section, and second auxiliary section with
When first auxiliary section is engaged, the rotation of the clutch part drives knob body rotation, and second auxiliary section has can be with
The first state of first auxiliary section is driven, and the second state of first auxiliary section cannot be driven.Match when described second
When conjunction portion is in first state, the rotation of the clutch part drives knob body rotation, when second auxiliary section is in second
When state, the rotation of the clutch part does not drive knob body to rotate, the clutch part relative to the knob body proximally
It axially moves；The regulating part is located at the proximal end of the clutch part, is provided with one between the regulating part and the clutch part
Pressure spring, and the regulating part can be relative to the clutch part along the axial movement of stapler.
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 regulating part and positioning pressure spring.The clutch part will receive the obstruction of pressure spring towards the axial movement of the distal end of stapler, i.e.,
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 knot
Structure.When operator rotates knob assembly, it is first subjected to that operator rotates power drive and what is rotated is clutch part.Work as knob body
Before suffered resistance reaches resistance preset value, clutch can transmit the torque of the resistance greater than knob body, knob sheet
Body and clutch part linkage, rotation clutch part can drive knob body to rotate together, and knob body can drive nail-anvil assembly along identical
The axial movement of device and close to nail bin；After the resistance suffered by the knob reaches resistance preset value, clutch can not be transmitted greatly
In the torque of the resistance of knob body, clutch part is detached to the proximal end of stapler is mobile with actuator, and oppresses pressure spring, at this time
Clutch part can not drive knob body to rotate, and knob assembly enters failure mode, and the gap between nail-anvil assembly and nail bin is kept
It is constant, without squeezing tissue excessively.
Wherein, the size of resistance preset value is by the inclination angle of contact surface between actuator and clutch part and the spring force of pressure spring
It determines.For the same pressure spring, in different compression degrees, spring force is different, and spring force is equal to bullet
Spring rigidity is multiplied by decrement, and therefore, decrement is bigger, and spring force is bigger, and decrement is smaller, and spring force is smaller.Therefore, this is practical
It is novel further to adjust the size of resistance preset value by adjusting the initial compression degree of pressure spring.The size of resistance preset value is
Corresponding between nail-anvil assembly and nail bin groupware to the size of the maximum tissue squeeze force of tissue compression.Specifically, pressure spring is arranged
Between clutch part and regulating part, regulating part can be along the axial movement of stapler, and when regulating part is close to clutch part, resistance is pre-
If value further increases, when regulating part is far from clutch part, resistance preset value is further decreased.
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.
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 knob is rotated, knob body will receive the resistance for hindering first direction rotation, this resistance corresponds to nail-anvil assembly
Tissue squeeze force between nail bin groupware, at this point, being only applied more than the rotation torque ability of the resistance in knob body
It is rotated in a first direction knob body.That is, when the resistance is greater than resistance preset value, if applying bigger turning moment rotation
The reaction force of clutch part, the turning moment that knob body is subject to is given on clutch part, which can overcome the bullet of pressure spring
Spring force and oppress pressure spring and be deformed, clutch part can generate the axial movement to stapler proximal end, and make the second of clutch part
Auxiliary section is detached from the first auxiliary section of knob body, i.e. the second auxiliary section is in the second state without driving the first auxiliary section, this
When, clutch part can not by operator apply turning moment be transmitted in knob body, knob body not can rotate, clutch part into
Capable is invalid idle running, and can issue the sound of rattling away when the first auxiliary section and the tripping of the second auxiliary section, at this time set of knobs
Part is in failure state, and the nail forming gap between nail-anvil assembly and nail bin groupware 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 85 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 shown in Fig. 2~9, the knob assembly includes knob body 1, clutch part and regulating part 5, the knob body 1
It is sheathed on the outside of the screw rod 85, 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 85 of stapler are matched
It closes, drives screw rod 85 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 regulating part 5 is located at the proximal end of stapler, and regulating part 5
A pressure spring 3 is provided between the clutch part, and the regulating part 5 can be moved relative to the clutch part along the axial direction of stapler
It is dynamic, with the separate or close clutch part.
In this embodiment, the clutch part includes clutch ring 2, and clutch ring 2 is sheathed in knob body 1, and regulating part 5 can
To use an adjusting gasket.First auxiliary section include be set to the proximal end face of the actuator 14 at least one first
Matching piece, second auxiliary section include and one-to-one second matching piece of first matching piece.First matching piece
It can be the first protrusion 11, second matching piece can be the second protrusion 21.In other alternate embodiments, first matches
Component and the second matching piece also can choose as other structures, such as the first matching piece is protrusion, and the second matching piece is and protrusion
The groove or the first matching piece matched is groove, and the second matching piece is the protrusion etc. matched with groove, belongs to this
Within the protection scope of utility model.It is further preferred that first protrusion 11 includes first side 111, described second is convex
Playing 21 includes third side 211, when the clutch ring 2 is rotated in a first direction by external force, the first side of first protrusion 11
Face 111 and the third side 211 of second protrusion 21 are engaged, and 111 direction of first side of first protrusion 11
First direction inclination.And the inclined direction of the third side 211 of the second protrusion 11 and first side 111 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.
Wherein, the size of resistance preset value is by the bullet of the inclination angle of contact surface and pressure spring 3 between actuator 14 and clutch ring 2
Spring force is determined.For the same pressure spring 3, in different compression degrees, spring force is different.Therefore, this reality
The size of resistance preset value further is adjusted by adjusting initial compression degree, that is, initial deformation amount of pressure spring 3 with novel, i.e.,
Adjust the size of maximum tissue squeeze force.Specifically, regulating part 5 can along the axial movement of stapler, regulating part close to from
When cyclization 2, resistance preset value is further increased, and maximum tissue squeeze force increases, and when regulating part is far from clutch ring 2, resistance is default
Value further decreases, and maximum tissue squeeze force reduces.In the tissue or tissue that stapler is applied to different-thickness for squeezing
When the ability to bear difference of power, the limit value of squeeze force can be changed by the movement of regulating part 5.
In this embodiment, the medial surface of the regulating part 5 is provided with the second orientation portion, and the regulating part 5 is sheathed on institute
State the proximal end of knob body 1, the proximal end of the knob body 1 is provided with the first orientation portion, second orientation portion and described the
The cooperation of one orientation portion, and second orientation portion can only be moved axially relative to first orientation portion.In this embodiment, institute
Stating the first orientation portion includes at least one first axially extending guide slot 15 along stapler, second orientation portion for institute
State the one-to-one first orientation muscle 52 of the first guide slot 15, the first orientation muscle 52 protrude into first guide slot 15 and
It can be moved along the extending direction of first guide slot 15.In other embodiments, first orientation portion also may include
, along the first axially extending orientation muscle of stapler, second orientation portion is a pair of with the first orientation muscle one at least one
The first guide slot answered, the orientation muscle are protruded into the groove and can be moved along the extending direction of itself.
In this embodiment, the knob assembly further includes that torsion adjusts cover 6, and the torsion adjusts distal end and the institute of cover 6
The proximal end for stating regulating part 5 matches, and when the torsion adjusts cover 6 relative to the knob body 1 rotation, drives the regulating part
5 along stapler axial movement.
In this embodiment, the matching surface of the torsion adjusts cover 6 distal end and the proximal end of the regulating part 5 is spiral
Face.As shown in Figure 7 and Figure 8, it is the second helicoid 61 that torsion, which adjusts the distal face of cover 6, and the proximal end face of regulating part 5 is the first spiral
Face can be improved torsion and adjust the degree of cooperation covered between 6 and regulating part 5 due to being face contact between helicoid.In other realities
It applies in mode, the matching surface that torsion adjusts the distal end and the proximal end of the regulating part 5 of cover 6 can also use other cooperation sides
Formula, such as it is inclined-plane that 6 distal end and the matching surface of the proximal end of the regulating part are covered in torsion adjusting.
In this embodiment, the cooperation position that torsion is adjusted between cover 6 and regulating part 5 also uses pressure spring 3 to be defined.
That is, pressure spring 3 is respectively defined the position of two fit structures at both ends: the distal end of pressure spring 3 limits clutch ring 2 and knob sheet
Body 1 axially engages, and the proximal end of pressure spring 3 limits regulating part 5 and adjusts axially engaging for cover 6 with torsion.One is used in the embodiment
A pressure spring 3 realizes two positions for axially engaging mechanism, and structure is simplified.
As shown in FIG. 10 and 11, it respectively illustrates and matches in the initial state with failure state lower knob ontology 1 and clutch ring 2
The structure of conjunction.
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, and clutch ring 2 rotates, at this time due to
Tissue not yet clamps, and resistance suffered by knob body 1 is not up to resistance preset value, and clutch can pass through the first raised 11 Hes
The torque for the resistance that cooperation between second protrusion 21 will be greater than knob body 1 is transmitted to knob body 1 from clutch ring 2, at this time
Knob body 1 is not enough to overcome the elastic force of pressure spring 3 to the reaction force of clutch ring 2.As shown in Figure 10, pressure spring 3 is kept at this time
Original state, not deformed or a certain amount of initial deformation amount of generation, the second auxiliary section is in first state, i.e. clutch ring 2
The second protrusion 21 come into full contact with cooperation, rotation drive 1 edge of knob body of clutch ring 2 with the first protrusion 11 of knob body 1
First direction rotation, nail-anvil assembly 83 are driven gradually close to each other with nail bin groupware 82 by screw rod 85.
Grip tissue and then the clutch of knob assembly is rotated in a first direction between nail-anvil assembly 83 and nail bin groupware 82
Ring 2, knob body 1 will receive the resistance for hindering it to be rotated in a first direction, at this point, being only applied more than in knob body 1
The rotation torque of the resistance can just be rotated in a first direction knob body 1.When the resistance is greater than resistance preset value, if operation
Person applies the rotation torque for being less than the resistance to clutch ring 2, clutch ring 2 by knob body 1 obstruction and can not rotate, if
Operator is applied more than the turning moment rotation clutch ring 2 of the resistance, and the reaction force for the turning moment that knob body 1 is subject to is logical
The cooperation crossed between the first protrusion 11 and the second protrusion 21 is transmitted on clutch ring 2, the component of the reaction force in axial direction
The spring force of pressure spring 3 can be overcome and oppress pressure spring 3 and be deformed.As shown in figure 11, clutch ring 2 can be generated to stapler proximal end
It is axially moved, and the second protrusion 21 of clutch ring 2 is made to be detached from the first protrusion 11 of knob body 1, is i.e. the second auxiliary section is in
Second state, at this point, the turning moment that operator applies can not be transmitted in knob body 1 by clutch ring 2, knob body 1 is not
It can rotate, what clutch ring 2 carried out is invalid idle running, and can issue rattling away when the first raised 11 and second protrusion 21 is threaded off
It rattles away sound, knob assembly is in failure state at this time, and the nail forming gap between nail-anvil assembly 83 and nail bin groupware 82 remains unchanged,
Tissue will not be squeezed excessively.If operator hear rattle away sound or according to when failure state rotate knob assembly feel can
It is moved into position to determine current nail-anvil assembly 83, the percussion operation of stapler can be executed.
When stapler is applied to different tissue cuttings and suture, the state of tissue is different, needs to adjust nail anvil group
The size of maximum tissue squeeze force between part 83 and nail bin groupware 82 adjusts the size of resistance preset value.At this time, it may be necessary to logical
It crosses rotary torsion and adjusts cover 6, so that regulating part 5 is moved along the axial direction of stapler, and adjust the pressure of pressure spring 3 under original state
Contracting degree, that is, when changing the second protrusion 21 and being detached from the first protrusion 11, the second protrusion 21 is to the mobile needs gram in stapler proximal end
The size of the elastic force of clothes.When regulating part 5 is close to clutch ring 2,3 initial compression degree of pressure spring increases, what clutch ring 2 needed to overcome
Elastic force also increases, and then increases maximum tissue squeeze force, on the contrary, reducing maximum when regulating part 5 is far from clutch ring 2
Organize squeeze force.
In this embodiment, the stapler further includes knob shell 4, and the inner surface of the knob shell 4 is provided with
Four auxiliary sections；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 cooperation
Portion, the third auxiliary section are matched with the 4th auxiliary section, so that the knob shell 4 can drive clutch ring 2 to rotate, and institute
Stating clutch ring 2 can move axially relative to knob shell 4.In this embodiment, the third auxiliary section includes being located at clutch ring 2
Axial sides at least one second guide slot 22, the 4th auxiliary section include and second guide slot 22 correspond
Second orientation muscle 41, it is described second orientation muscle 41 along stapler axial direction extend and protrude into second guide slot 22
In, and second guide slot 41 can along second orientation muscle 22 extending direction move, thus realize clutch ring 2 can with outside knob
Shell 4 rotates together, and clutch ring 2 is moved axially relative to knob shell 4, and the second orientation muscle 41 is that the guide slot 22 mentions
For guiding role.Preferably, the guide slot 22 is respectively equipped with two with the orientation muscle 41, and be it is arranged symmetrically, with realization
The balance of structure and the balance of stress, naturally it is also possible to be multiple or asymmetric setting.
In other embodiments, the third auxiliary section also may include at least one of the axial sides positioned at clutch ring 2
Item second orients muscle, and the 4th auxiliary section includes coincideing with the one-to-one guide slot of the orientation muscle, the orientation muscle edge
The axial direction of device extends and protrudes into the guide slot, and the orientation muscle can be moved along the extending direction of itself.
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.
In order to limit the rotation angle that torsion adjusts cover 6, the proximal end medial surface of the knob shell 4 is provided with arc
Limiting slot 43, the lateral surface that the torsion adjusts cover 6 are provided with limited block 62, and the limited block 62 is embedded at the limiting slot 43
In, and the limited block 62 can rotate in the expanded range of the limiting slot 43 relative to the limiting slot 43.Thus it prevents
When rotary torsion adjusts cover 6, due to overwinding, there are past recurrent images.
In other embodiments, the proximal end medial surface of the knob shell 4 can also be provided with limited block, the torsion
The lateral surface that power adjusts cover 6 is provided with the limiting slot of arc, and the limited block is embedded in the limiting slot, and the limited block
It can be rotated in the expanded range of the limiting slot relative to the limiting slot.
In this embodiment, the knob assembly further includes a knob rear cover, and the knob rear cover is including after the first knob
Lid 7 and the second knob rear cover 9, the distal end of the first knob rear cover 7 are provided with rear cover internal screw thread 71, the proximal end of the knob body 1
It is provided with this extracorporeal thread 12 matched with the rear cover internal screw thread 71, the first knob rear cover 7, which can play, to be supported and fixed
The effect of knob body 1, the second knob rear cover 9 can be installed on the proximal lateral of the first knob rear cover 7.
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；Wherein resistance preset value is nail-anvil assembly
The pressure limit of the tissue clamped between nail bin groupware, the spring force of the pressure spring of the size and clutch part proximal end of resistance preset value
Related, by changing the distance between regulating part and clutch part, the spring force of adjustable pressure spring is pre- so as to adjust resistance
If the size of value realizes the adjusting of organizational stress limit value.
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 (17)
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, and screw rod axial movement is driven 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；
Regulating part is provided with a pressure spring, and described positioned at the proximal end of the clutch part between the regulating part and the clutch part
Regulating part can be relative to the clutch part along the axial movement of stapler.
2. knob assembly according to claim 1, which is characterized in that the medial surface of the regulating part is provided with the second orientation
Portion, the regulating part are sheathed on the proximal end of the knob body, and the proximal end of the knob body is provided with the first orientation portion, described
Second orientation portion and first orientation portion cooperate, and second orientation portion only can axially be moved relative to first orientation portion
It is dynamic.
3. knob assembly according to claim 2, which is characterized in that further include that torsion adjusts cover, the torsion adjusts cover
Distal end matched with the proximal end of the regulating part, when the torsion adjusts cover relative to knob body rotation, drive institute
State axial movement of the regulating part along stapler.
4. knob assembly according to claim 3, which is characterized in that the torsion adjusts the distal end covered and the regulating part
The matching surface of proximal end be that the matching surface of distal end and the proximal end of the regulating part that helicoid or the torsion adjust cover is
Inclined-plane.
5. knob assembly according to claim 3, which is characterized in that further include knob shell, the knob shell it is close
End medial surface is provided with the limiting slot of arc, and the lateral surface that the torsion adjusts cover is provided with limited block, and the limited block is embedded
In the limiting slot, and the limited block can rotate in the expanded range of the limiting slot relative to the limiting slot；
Or, the proximal end medial surface of the knob shell is provided with limited block, the lateral surface that the torsion adjusts cover is provided with arc
Limiting slot, the limited block is embedded in the limiting slot, and the limited block can be relative to the limiting slot in the limit
Rotation in the expanded range of position slot.
6. knob assembly according to claim 2, which is characterized in that first orientation portion includes at least one along identical
The first axially extending guide slot of device, second orientation portion are and one-to-one first orientation of first guide slot
Muscle, the first orientation muscle are protruded into first guide slot and can be moved along the extending direction of first guide slot；Or
First orientation portion includes at least one first axially extending orientation muscle along stapler, and second orientation portion is
With the first orientation one-to-one first guide slot of muscle, the first orientation muscle protrudes into first guide slot and can edge
The extending direction of itself is mobile.
7. 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.
8. knob assembly according to claim 7, which is characterized in that first matching piece is the first protrusion, described the
Two matching pieces are the second protrusion；
Or, first matching piece is the first protrusion, second matching piece is groove；
Or, first matching piece is groove, second matching piece is protrusion.
9. knob assembly according to claim 7 or 8, which is characterized in that first matching piece includes first side, institute
Stating the second matching piece includes third side, when the clutch part is rotated in a first direction by external force, the of first matching piece
The third side of one side and second matching piece is engaged, and the first side of first matching piece is towards first party
To inclination.
10. knob assembly according to claim 9, 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；
The second side of first matching piece is right-angle surface, or, the second side of first matching piece is towards second direction
The inclined degree of inclination and the second side of the first matching piece is less than the inclined degree of the first side.
11. knob assembly according to claim 9, which is characterized in that the first side and second of first matching piece
The third side of matching piece is plane or the curved surface matched, the second side of first matching piece and the second matching piece
4th side is plane or the curved surface matched.
12. 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.
13. 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.
14. knob assembly according to claim 13, which is characterized in that the third auxiliary section includes being located at clutch part
At least one second guide slot of side, the 4th auxiliary section include and one-to-one second orientation of second guide slot
Muscle, the second orientation muscle extend along the axial direction of stapler and protrude into second guide slot, and second orientation
Slot can be moved along the extending direction of the second orientation muscle；Or
The third auxiliary section includes at least one the second orientation muscle positioned at the side of clutch part, and the 4th auxiliary section includes
With one-to-one second guide slot of orientation muscle, the second orientation muscle extends along the axial direction of stapler and protrudes into institute
It states in the second guide slot, and the second orientation muscle can be moved along the extending direction of itself.
15. knob assembly according to claim 13, 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.
16. knob assembly according to claim 1, which is characterized in that it further include a knob rear cover, the knob rear cover
Distal end is provided with rear cover internal screw thread, and the proximal end of the knob body is provided with the external spiral shell of sheet matched with the rear cover internal screw thread
Line.
17. a kind of circular-pipe anastomat, which is characterized in that including knob assembly described in any one of claims 1 to 16.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822132546.9U CN209529238U (en) | 2018-12-18 | 2018-12-18 | Knob assembly and circular-pipe anastomat |
| PCT/CN2019/126299 WO2020125677A1 (en) | 2018-12-18 | 2019-12-18 | Rotary knob assembly and circular-tube-type stapler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822132546.9U CN209529238U (en) | 2018-12-18 | 2018-12-18 | Knob assembly and circular-pipe anastomat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209529238U true CN209529238U (en) | 2019-10-25 |
Family
ID=68264829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822132546.9U Active CN209529238U (en) | 2018-12-18 | 2018-12-18 | Knob assembly and circular-pipe anastomat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209529238U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111012427A (en) * | 2019-12-13 | 2020-04-17 | 上海大博医疗科技有限公司 | Distance compensation type nail abutting device |
| CN111071759A (en) * | 2019-12-30 | 2020-04-28 | 广东利元亨智能装备股份有限公司 | Power-assisted adjusting method and device and controller |
| 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 |
| WO2020125677A1 (en) * | 2018-12-18 | 2020-06-25 | 天臣国际医疗科技股份有限公司 | Rotary knob assembly and circular-tube-type stapler |
| WO2022006795A1 (en) * | 2020-07-09 | 2022-01-13 | Covidien Lp | Powered handle assembly for surgical devices |
-
2018
- 2018-12-18 CN CN201822132546.9U patent/CN209529238U/en active Active
Cited By (5)
| 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 |
| WO2020125677A1 (en) * | 2018-12-18 | 2020-06-25 | 天臣国际医疗科技股份有限公司 | Rotary knob assembly and circular-tube-type stapler |
| CN111012427A (en) * | 2019-12-13 | 2020-04-17 | 上海大博医疗科技有限公司 | Distance compensation type nail abutting device |
| CN111071759A (en) * | 2019-12-30 | 2020-04-28 | 广东利元亨智能装备股份有限公司 | Power-assisted adjusting method and device and controller |
| WO2022006795A1 (en) * | 2020-07-09 | 2022-01-13 | Covidien Lp | Powered handle assembly for surgical devices |
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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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