Invention content
Based on this, it is necessary to for traditional mechanical stapler it is difficult to ensure that performing the operation can make at tissue squeezing every timeReasonably into nail range the problem of, provide it is a kind of can make tissue squeezing be in reasonably into nail range stapler.
A kind of stapler, including
Outer sleeve, the through-hole being axially provided through along it；
Input shaft, in the outer sleeve, for passing power；
Main shaft is closed, one end is sheathed on outside one end of the input shaft, and the closure main shaft is driven by the input shaftShi Xuanzhuan；
Axis sliding block is closed, is sheathed on the outside for being closed main shaft, and connect with the closure spindle thread, the closureMake translation when axis sliding block is by the closure main shaft drives to move forward or back；
It is closed and opens push jack, be fixedly connected with the closure axis sliding block, advanced by work translation during the closure main shaft drivesOr it retreats；
Main shaft is fired, positioned at the side for being closed main shaft, the percussion main shaft rotates when being driven by the input shaft；
Beating shaft sliding block is sheathed on the outside of the percussion main shaft, and is connect with the percussion spindle thread, the percussionMake translation when axis sliding block is by the percussion main shaft drives to move forward or back；
Pushing device is abutted with the beating shaft sliding block, is translated by the beating shaft slider-actuated；
Switching mechanism is stretched into the through-hole of the outer sleeve, the switching mechanism selectively with the closureMain shaft, the percussion main shaft cooperation or separation；
Pressure sensor, when the stapler is closed, the pressure sensor can be squeezed and generate pressure signal；
Limit switch is closed, when closure axis slide block movement to the precalculated position, the closure limit switch can be touchedHair.
When above-mentioned stapler is located at original state, switching mechanism is detached with being closed main shaft cooperation with percussion main shaft.When defeatedWhen entering axis rotation, closure main shaft is driven by input shaft to be rotated, while is driven to be closed axis sliding block and be closed opening push jack and made straight line fortuneIt is dynamic, complete the opening procedure of stapler.Input shaft reversion then drives to be closed axis sliding block and be closed and opens push jack and back translate, when closingDuring sympodium shoe contact pressure sensor, systems stay monitors the numerical value of pressure sensor whether in the range of systemic presupposition, whenPressure value meets systemic presupposition range and is closed limit switch when being triggered, and closed action stops.Then, switching mechanism is adjusted,It is made to be detached and with being closed main shaft with firing main shaft cooperation.At this point, percussion switch can be triggered, stapler enters percussion pattern.When input shaft rotates, percussion main shaft is rotated by input shaft driving, while beating shaft sliding block and percussion limiting push rod is driven to make directlyLine moves, until pushing device is pushed to realize ejector pin action, completes percussion process.Therefore, compared with traditional stapler, this hairBright stapler can be such that tissue squeezing is in reasonably into nail range.
The stapler further includes percussion limit switch, the percussion limit switch installation in one of the embodiments,On the inner surface of the outer sleeve, when the beating shaft slide block movement is to precalculated position, the percussion limit switch canIt is triggered.
The switching mechanism includes in one of the embodiments,
Switching switch is stretched into the through-hole of the outer sleeve, and can be moved in the through-hole；
First switching ring is sheathed on outside one end of the closure main shaft, the first switching ring and the switching switchEngagement；
First guide pad is sheathed on the outside of the input shaft, and first guide pad is driven by the input shaft to be rotated,The switching switch can push the first switching ring selectively to engage or detach with first guide pad；
Switch driving lever, engaged between the closure main shaft and the percussion main shaft, and with the described first switching ring；
Second switching ring is sheathed on the outside of the percussion main shaft, and is engaged with the switching driving lever；
Second guide pad, is sheathed on the outside of the percussion main shaft, and the switching driving lever can push the second switching ringSelectively engage or detach with second guide pad；
Switching shaft is fired, one end is sheathed on the outside of the percussion main shaft, and is sheathed on the inside of the second switching ring,The second switching ring is by the percussion switching shaft driving rotation.
The stapler further includes the first gear and second gear for passing power in one of the embodiments,The first gear is sheathed on the outside of the input shaft, is driven and rotated by the input shaft, the second gear and described theOne gear engages, and is driven and reversely rotated by the first gear, and the second gear is sheathed on the percussion switching shaftOutside one end, the percussion switching shaft is driven by the second gear to be rotated.
The axis sliding block end set opposite with the closure limit switch that be closed is closed in one of the embodiments,Regulating element is closed, the position for being closed regulating element in the closure axis sliding block direction of translatory motion is adjustable.
The stapler further includes limit guide rail in one of the embodiments, and the limit guide rail has opposite twoA surface, each offers perforative straight slot on the surface, the limit guide rail is located at the closure main shaft and is hit with describedBetween sending out main shaft, and the closure axis sliding block limits rotary motion with the beating shaft sliding block by the limit guide rail.
The stapler further includes to realize the nail bin and nail anvil head, energy of osculating effect in one of the embodiments,Enough puncture axis connected or separated with nail anvil head realization, the puncture axis are opened push jack with the closure and are connect.
The pressure sensor is located on the nail anvil head close to the appearance of the nail bin in one of the embodiments,Face, on the nail bin close to the nail anvil head outer surface or be sheathed on it is described be closed main shaft outside, when the pressureWhen force snesor is sheathed on the outside of the closure main shaft, the pressure sensor can be abutted against with the closure axis sliding block.
The pushing device includes in one of the embodiments,
Percussion limiting push rod, abuts with the beating shaft sliding block, is translated by the beating shaft slider-actuated；
Beating shaft push jack is engaged with the percussion limiting push rod, and push rod driving translation is limited by the percussion；
Beating shaft distal end throw-out collar is abutted with the beating shaft push jack, is driven and translated by the beating shaft push jack；
Pushing slice of nail is driven by beating shaft distal end throw-out collar and translated.
The stapler is further included between the outer sleeve and the pushing slice of nail in one of the embodiments,Reseting elastic element, the reseting elastic element is abutting the pushing slice of nail.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings to the present inventionSpecific embodiment be described in detail.Many details are elaborated in the following description in order to fully understand this hairIt is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be notSimilar improvement is done in the case of violating intension of the present invention, therefore the present invention is not limited by following public specific embodiment.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another elementOr there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected toTo another element or it may be simultaneously present centering elements.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the inventionThe normally understood meaning of technical staff is identical.Term used in the description of the invention herein is intended merely to description toolThe purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " including one or more phasesThe arbitrary and all combination of the Listed Items of pass.
Stapler 100 in the embodiment of the present invention is electric drive stapler, and front view and vertical view are respectively such as Fig. 1 and figureShown in 2.Stapler 100 includes handle portion 110, transmission mechanism 120 and osculating portion 130.Handle portion 110 and osculating portion 130 are distinguishedIt is connected to the both ends of transmission mechanism 120.
Handle portion 110 sterilizes electric handle, inside setting fast connector and signal transmission end to be reusableMouth 223.Wherein, fast connector realizes that the external of handle portion 110 and transmission mechanism 120 is mechanically connected, inside by standardHexangle type main shaft realizes the torque transmission of handle portion 110 and transmission mechanism 120.Tissue squeeze force and position in transmission mechanism 120Confidence breath is transferred to the control module of handle portion 110 to realize the closure of stapler 100, open by signal transmission port 223And the actions such as percussion.
In addition, the external setting of handle portion 110 is used for the close push button 111 that stapler 100 is controlled to work, opens button112 and realize fine tuning vernier knob 113.When stapler 100, which is in, is closed opening procedure, close push button 111 is used for controllingStapler 100 processed, which is realized, to be closed.And when stapler 100 is in percussion process, close push button 111 is used to control stapler 100Realize percussion.The stapler 100 of the present embodiment is electric drive stapler, if but just in case electric drive breaks down and can not enable electricityDriving, then can also adjust vernier knob 113, to realize the closure of stapler 100, opening or percussion by being manually operatedProcess.
Transmission mechanism 120 include outer sleeve 121, be located on outer sleeve 121 form 122, for switch be closed orThe switching switch 219 of person's cock and the indication window 124 of indicating operating status.Form 122 can be used for observing stapler100 closure progress, that is, into staple height.It is reasonably necessity for closure completion into staple height that stapler 100, which is in,Condition.
Osculating portion 130 includes nail bin 131 and nail anvil head 132.Nail bin 131 and the outer sleeve 121 of transmission mechanism 120 are fixedConnection, nail bin 131 and nail anvil head 132 can realize separation or closure.
When stapler 100 is operated with, need first by reusable electric drive handle portion 110, transmission mechanism 120Link together with osculating portion 130, then by stapler 100 opening detach nail bin 131 and nail anvil head 132, nail anvil head 132 withIntestinal tube etc. needs the tissue of osculating to do pocket processing, and transmission mechanism 120 passes through other end intestinal tube etc. to organize and does pocket processing.It pressesIt descends and remains closed button 111 to be closed nail anvil head 132 and nail bin 131 to indicating window Green Zone, while 100 built-in system of staplerThe data of pressure sensor 237 are detected whether in the range of systemic presupposition, when the above two conditions are met, closed action is stoppedOnly, it is now placed in the tissue squeezed in osculating portion 130 and is in rational extruding thickness.It is stirred then to the direction in osculating portion 130Switching switch 219, press close push button 111 and keep by state, realize stapler 100 percussion simultaneously cut off be located at nail binThe tissues such as the intestinal tube between 131 and nail anvil head 132, while realize coincideing for tissue.The stroke of firing action is by stapler 100The percussion limit switch 215 in portion controls.
The part drawing of stapler 100 is as shown in Figure 3 in the embodiment of the present invention.Input shaft 226 and signal transmission interface 223 are equalIn outer sleeve 121, it is respectively used for transmitting motive power and signal.Wherein, one end of input shaft 226 is D profile shafts, facilitates driveMatched element rotation.
There are one input shaft 226, power can be divided the stapler 100 of the present embodiment by switching mechanism from input shaft 226Supplementary biography, which is passed, is closed main shaft 218 and percussion main shaft 240, to be respectively completed closure and firing action.And during percussion, it can lead toThat crosses first gear 227 and second gear 228 cooperates to passing power.Specifically, first gear 227 is sheathed on input shaftOutside 226 D profile shafts.Second gear 228 is engaged with first gear 227, and when first gear 227 rotates, second gear 228 canIt is reversely rotated with first gear 227.One end of percussion switching shaft 230 is sheathed on the outside of percussion main shaft 240, and is sheathed on secondThe inside of gear 228.Percussion switching shaft 230 drives rotation by second gear 228.
Switching mechanism selectively coordinates or detaches with closure main shaft 218, percussion main shaft 240.Switching mechanism includes cuttingIt changes switch 219, first and switches ring 221, the first guide pad 222, switching driving lever 233, the percussion switching ring 231 of switching shaft 230, secondWith the second guide pad 232.Wherein, switching switch 219 is stretched into the through-hole of outer sleeve 121, and can be moved in through-holes.FirstSwitching ring 221 is sheathed on outside the one end for being closed main shaft 218, and engaged with switching switch 219.First guide pad 222 is sheathed onOutside the other end of input shaft 226, the first guide pad 222 drives rotation by input shaft 226.Switching switch 219 can push firstSwitching ring 221 is selectively engaged or is detached with the first guide pad 222.Switch driving lever 233 and led positioned at main shaft 218 is closed with percussionBetween axis 240, and engaged with the first switching ring 221.When the first switching ring 221 is detached with the first guide pad 222, switch driving leverThe percussion program of 233 triggerable staplers 100.Percussion switching shaft 230 is sheathed on the inside of second gear 228, by second gear228 driving rotations.Second switching ring 231 is sheathed on the outside of percussion main shaft 240, and can be respectively with switching driving lever 233, percussionSwitching shaft 230 engages, and rotation is driven by percussion switching shaft 230.Second guide pad 232 is sheathed on the outside of percussion main shaft 240, cutsChanging driving lever 233 can push the second switching ring 231 selectively to engage or detach with the second guide pad 232.
Being closed one end of main shaft 218 can be sheathed on outside the other end of input shaft 226, while be sheathed on the first switching ring221 inside.It is closed axis sliding block 217 and is sheathed on the outside for being closed main shaft 218, and be threadedly coupled with being closed main shaft 218.Due to byTo the limitation of limit guide rail 239, it is closed axis sliding block 217 and is moved forward or back movement by translation can only be made when being closed the driving of main shaft 218.Limit guide rail 239 has two opposite surfaces, and perforative straight slot is offered on each surface, and limit guide rail 239, which is located at, closesIt closes between main shaft 218 and percussion main shaft 240.It is slided with being closed axis one end that closure in push jack guide rail 210 opens push jack 211Block 217 is fixedly connected, and the other end is connect with puncturing axis 206.Puncturing axis 206 can connect or separate with the realization of nail anvil head, so as toRealize closing or opening for stapler 100.
It fires main shaft 240 and is located at the side for being closed main shaft 218, one end is D profile shafts, and the second guide pad 232 is set in the DThe outside of profile shaft one end.Percussion main shaft 240 can drive rotation by the second guide pad 232.Beating shaft sliding block 241 is sheathed on percussion masterThe outside of axis 240, and be threadedly coupled with percussion main shaft 240.Due to being limited by limit guide rail 239, beating shaft sliding block 241 byPercussion main shaft 240 can only make translation when driving and move forward or back movement.
Pushing device is abutted with beating shaft sliding block 241.Pushing device includes percussion limiting push rod 212, beating shaft push jack209th, beating shaft distal end throw-out collar 208 and pushing slice of nail 205.Wherein, percussion limiting push rod 212 is abutted with beating shaft sliding block 241, and byThe driving translation of beating shaft sliding block 241.Beating shaft push jack 209 engages, and limit push rod 212 by percussion with percussion limiting push rod 212Driving translation.Beating shaft distal end throw-out collar 208 is abutted with beating shaft push jack 209, and drives translation by beating shaft push jack 209.Ejector pinPiece 205 is located in nail bin 131, can drive translation by beating shaft distal end throw-out collar 208.
Nail bin 131 includes nail bin sheath 202, the pushing slice of nail 205 inside nail bin sheath 202, curved knife 204 and nailBin bracket 203.Nail bin 131 is fixedly connected with outer sleeve 121.
The stapler 100 of the present embodiment is internally provided with pressure sensor 237, is closed limit switch 235, percussion switch220 and percussion 215 grade intelligent switch of limit switch.When stapler is closed, pressure sensor 237 can be squeezed and generate pressureForce signal.When closure axis sliding block 217 moves to precalculated position, being closed limit switch 235 can be triggered.When switching mechanism is with closingWhen conjunction main shaft 218 is detached and coordinated with percussion main shaft 240, percussion switch 220 can be triggered.Percussion limit switch 215 is installedOn the inner surface of outer sleeve 121, when beating shaft sliding block 241 moves to precalculated position, percussion limit switch 215 can be touchedHair.The setting of aforementioned four intelligent switch can be ensured that it is best into staple height, control percussion time and stroke etc., reduce peopleError for judgement.Simultaneously because the tissue squeeze force of each surgical procedure of its storage inside, multiple data accumulations will be constantly excellentChanging the tissue squeeze force of setting makes it be substantially equal to best tissue squeeze force.
The pressure sensor 237 of the present embodiment is sheathed on the outside for being closed main shaft 218, can offset with being closed axis sliding block 217It connects.Therefore, when closure axis sliding block 217 moves backward, it can contact and squeeze above-mentioned pressure sensor 237, pressure sensor237 can transmit pressure signal to the control module positioned at handle portion 130.Certainly, the position of pressure sensor 237 is not limited toThis, as long as being able to detect that pressure signal when stapler 100 is in closed state.For example, pressure sensor 237 can be withClose to the outer surface of nail anvil head close to the outer surface of nail bin or on nail bin on nail anvil head.In addition, the present embodimentThe position for being closed other intelligent switch such as limit switch 235, percussion switch 220 and percussion limit switch 215 is also not necessarily limited to this.
In the stapler 100 of the present embodiment, it is being closed the end set opposite with being closed limit switch 235 of axis sliding block 217There is the closure regulating element 242 of adjustable position, be closed regulating element 242 on 217 direction of translatory motion of axis sliding block is closedPosition is adjustable.The position for being closed regulating element 242 can be adjusted during manufacture, to reduce stapler 100 in assembling processThe progressive error of middle generation.During stapler 100 is closed, it is closed axis sliding block 217 and back translates, drive and be closed regulating element242 back translate, and when stapler 100 is closed to reasonable altitudes range, closure limit switch can be fired by being closed regulating element 242235, stop being closed.It is closed in regulating element the present embodiment, closure regulating element 242 is screw, and with being closed 217 spiral shell of axis sliding blockLine connects.Certainly, it can also be other elements in addition to screw to be closed regulating element 242, and its company with being closed axis sliding block 217It is without being limited thereto to connect mode.Such as the two can be snapped together directly.
In addition, the closure limit switch 235 and percussion limit switch 215 in the present embodiment use optoelectronic switch, and hitHair switch 220 uses Hall switch.But it is closed the type of limit switch 235, percussion limit switch 215 and percussion switch 220It is without being limited thereto, other intelligent switch can also be used, as long as being capable of the closure or firing action of intelligent control stapler 100.
The stapler 100 of the present embodiment further includes the reseting elastic element between outer sleeve 121 and pushing slice of nail 205207.The reseting elastic element 207 is mounted in nail bin sheath 202 and to abut pushing slice of nail 205.Reset in the present embodimentElastic element 207 is spring.After beating shaft sliding block 241 is completed in percussion to be resetted, which can be by pushing slice of nail205 push back initial position so that the curved knife 204 in pushing slice of nail 205 is hidden within nail bin, and doctor is avoided to check excision groupIt is scratched when knitting by blade.
It is described in detail in the sectional view of transmission mechanism 120 when working with reference to the stapler 100 of the embodiment of the present inventionOperation principle.
Stapler 100 be closed before state as shown in figure 4, at this time switching mechanism with closure main shaft 218 coordinate, and with percussionMain shaft 240 detaches.Specifically, switching switch 219 is located on the right side of the through-hole on outer sleeve 121, the first switching ring 221 and firstGuide pad 222 engages.At the same time, the second 231 and second guide pad 232 of switching ring is in discrete state in the axial direction.At this point,It is closed axis sliding block 217 and is located at end of the closure main shaft 218 far from input shaft 226.
Close push button 111 is pressed, input shaft 226 reversely rotates, and drives the first guide pad 222 and the first switching ring 221It reversely rotates, so as to which closure main shaft 218 be driven to reversely rotate.It is limited the closure axis sliding block 217 that guide rail 239 limits rotary motionStraight line retrogressing is carried out toward 226 direction of input shaft, and it is straight that the closure being fixedly connected with being closed axis sliding block 217 is driven to open push jack 211Line retreats, until being closed 217 contact pressure sensor 237 of axis sliding block.When the numerical value of system monitoring to pressure sensor 237 is inDuring systemic presupposition range, the requirement to the crushing strength of tissue is met.Meanwhile it if is threadedly coupled with being closed opening push jack 211Closure regulating element 242 trigger be closed limit switch 235, show be closed height between 1.5mm~2.5mm, meetPreset requirement.Stapler 100 is automatically stopped closing motion at this time.
Fig. 5 is the state diagram before being fired after the closure of stapler 100 in the present embodiment, it can be seen from the figure that being closed at this timeAxis sliding block 217 is located at closure main shaft 218 and is abutted against close to the end of input shaft 226, and with pressure sensor 237.And it is closed and adjustsSection element 242, which triggers, is closed limit switch 235.
Switching switch 219 then is stirred toward left side, switching mechanism is made to be detached with being closed main shaft 218, and with firing main shaft 240Cooperation.Specifically, the first switching ring 221 detaches in the axial direction with the first guide pad 222.And the second switching ring 231 is led with secondIt is engaged to block 232.At the same time, switching switch 219 drives the switching driving lever 233 for being equipped with magnet is separate to be fixed on outer sleeveHall switch on 121 so that Hall switch is triggered, so as to which safety switch is also triggered.Control module in handle portion is openedBegin to call percussion modular program.
Close push button 111 is pressed, input shaft 226 rotates, and first gear 227 is driven to rotate, then drive and first gearThe second gear 228 of 227 engagements reversely rotates.Second gear 228 rotates, and percussion switching shaft 230 is driven to rotate, then successivelyThe second switching ring 231, the second guide pad 232 and percussion main shaft 240 is driven to rotate.It is limited guide rail 239 and limits rotary motionBeating shaft sliding block 241 it is for linear motion to osculating portion 130, so as to push percussion limiting push rod 212 it is for linear motion.Percussion limitPosition push rod 212 drives beating shaft push jack 209, beating shaft distal end throw-out collar 208 and pushing slice of nail 205 to osculating portion 130 successively simultaneouslyIt is for linear motion, it realizes and coincide to squeezing tissue.The curved knife 204 on pushing slice of nail 205, which can be cut off, simultaneously has kissedThe tissue of conjunction.And the stroke for firing movement can be triggered the percussion limiting inside outer sleeve 121 by beating shaft sliding block 241215 control of switch.The state diagram that finally percussion is completed of stapler 100 is as shown in Figure 6 in the present embodiment.
When above-mentioned stapler 100 is located at original state, switching mechanism be closed main shaft 218 coordinate and with fire main shaft 240Separation.When input shaft 226 rotates, be closed main shaft 218 and driven by input shaft 226 and rotate, at the same drive be closed axis sliding block 217 andIt is for linear motion to be closed opening push jack 211, completes the opening procedure of stapler.Input shaft 226 inverts, and drives and is closed axis sliding block217 and be closed open push jack 211 back translate, when being closed axis 217 contact pressure sensor 237 of sliding block, systems stay monitorWhether in the range of systemic presupposition, signal transmission interface can be used for transmission 237 He of pressure sensor to the numerical value of pressure sensor 237The signal of limit switch 235 is closed, when pressure value meets systemic presupposition range and closure limit switch 235 is triggered, is closedAction stops.Then, switching mechanism is adjusted, it is made to detach with closure main shaft 218 and coordinate with percussion main shaft 240.At this point, suddenlyYou can be triggered at switch, and stapler enters percussion pattern.When input shaft 226 rotates, percussion main shaft 240 is driven by input shaft 226Dynamic rotation, while drive beating shaft sliding block 241 and percussion limiting push rod 212 for linear motion, until pushing device is pushed to realizeEjector pin acts, and completes percussion process.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned realityIt applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not depositedIn contradiction, it is all considered to be the range of this specification record.
Embodiment described above only expresses the several embodiments of the present invention, and description is more specific and detailed, but simultaneouslyIt cannot therefore be construed as limiting the scope of the patent.It should be pointed out that those of ordinary skill in the art are comeIt says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present inventionRange.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.