CN109805981A - Medical tool - Google Patents
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- CN109805981A CN109805981A CN201711175754.0A CN201711175754A CN109805981A CN 109805981 A CN109805981 A CN 109805981A CN 201711175754 A CN201711175754 A CN 201711175754A CN 109805981 A CN109805981 A CN 109805981A
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- 241001074085 Scophthalmus aquosus Species 0.000 claims description 11
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- 210000000988 bone and bone Anatomy 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 108010048734 sclerotin Proteins 0.000 description 2
- 238000012549 training Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
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Abstract
The present invention relates to a kind of medical tools, comprising: connecting shaft, it can be around the working shaft that own axes rotate to be connected to；Drill bit is driven by the connecting shaft and is rotated, and can move to axial with the connecting shaft but non-relative rotation manner cooperates；Component is adjusted, is fixedly connected with the connecting shaft, is had to drive the actuator of the drill bit axially movable.The length of drill bit is adjustable, and work can shorten length when starting, and the rigidity of drill bit is improved, to reduce torque when beginning.
Description
Technical field
The present invention relates to the field of medical instrument technology, more particularly to a kind of medical tool with axial torque, especially
It is related to a kind of expansion marrow reamer that expansion marrow is bored and bored with this expansion marrow.
Background technique
In recent years, at present in fractures field, extensive use, hand is had been obtained in a kind of method of intramedullary nail treatment
It needs to use expansion marrow knife during art and expansion marrow is carried out to fracture site, be implanted into intramedullary nail after expanding marrow.Expand marrow to require physician level
It is higher.Currently, expand during marrow, since physician level is irregular, it is more the sclerotin that a certain wall of bone is ground off often occur, and another
The sclerotin that outer one side wall is ground off is few, causes intramedullary nail insertion difficult, influences surgical effect.
The expansion marrow reamer that tradition uses mostly is that cooperation cross like spanner is rotated using manpower, and efficiency is lower.Patent
CN201610993019 discloses a kind of electronic expansion marrow brill, and only electric power substitutes manpower, and efficiency increases, but there is no effectively
Mechanism come remind doctor expand marrow it is uneven or expand marrow it is uneven when be automatically stopped, can not solve to expand that marrow is non-uniform to ask
Topic.When starting to expand marrow, expand the residual that marrow position generally has part bone, expansion marrow resistance is larger, is easy deviateing bone at the very start
Center, cause subsequent expansion marrow uneven.
Summary of the invention
Based on this, it is necessary to for torque excessive problem when there is the medical tool of axial torque to start to work, propose
A kind of medical tool.
A kind of medical tool, comprising:
Connecting shaft, can be around the working shaft that own axes rotate to be connected to；
Drill bit is driven by the connecting shaft and is rotated, can moved to axial but can not relatively rotate with the connecting shaft
Mode cooperate；
Component is adjusted, is fixedly connected with the connecting shaft, is had to drive the actuator of the drill bit axially movable.
The length of above-mentioned medical tool, drill bit is adjustable, and work can shorten length when starting, and improves the rigid of drill bit
Property, thus torque when reducing beginning.
The adjusting component includes the handle being fixedly connected with connecting shaft in one of the embodiments, the handle tool
There is accommodation space, the actuator is rotatably disposed in the accommodation space, and the actuator drives the brill when rotating
Head is axially movable.The actuator can be rotated around the axis of connecting shaft in one of the embodiments, and the actuator is around institute
Axis is stated equipped with helicla flute, the drill bit protrudes into the inside of the actuator, and drill bit is connected with and protrudes into the helicla flute
Pin shaft.
In one of the embodiments, the inner wall of the accommodation space of the handle be equipped in the axial direction with the actuator
The end face of the spring holder abutted against, the actuator is equipped with multiple circumferentially disposed location holes, the spring
Positioning pin is selectively from different location hole cooperation limitations with the rotation of the actuator.
The actuator includes being set to the helical member of bit exterior and being set to helical member in one of the embodiments,
External rotary structure, the rotary structure are fixedly connected with helical member, and the helicla flute is arranged outside helical member, described fixed
The end face of rotary structure is arranged in position hole.
At least one ridge is arranged in the rotary structure in one of the embodiments, and the ridge is at least partly dashed forward
For the surface of the handle.
The outside of the helical member is equipped with pin shaft hole in one of the embodiments, has holding pin in the pin shaft hole,
The helical member is interference fitted by holding pin and rotary structure.
In one of the embodiments, to be nested between the connecting shaft and drill bit, and the connecting shaft and drill bit
Between be equipped with and limit the pilot unit that the drill bit is rotated relative to the connecting shaft.
The pilot unit includes the sliding being arranged in connecting shaft or drill bit alternative one in one of the embodiments,
The limited post constrained by the sliding groove on another is arranged in slot.
The connecting shaft is hollow shaft in one of the embodiments, and one end of the drill bit is protruded into the connecting shaft.
In one of the embodiments, further include: reamer body, having can be around the working shaft of own axis；
The connecting shaft and the work axis connection.
The reamer body includes the motor for driving working shaft rotation, described in control in one of the embodiments,
The control unit of motor running, the drill bit are equipped with pressure sensor, communicate between the pressure sensor and control unit
Connection, described control unit control the operating of the motor according to the information of the pressure sensor.
It in one of the embodiments, further include prompt unit, the prompt unit controls work by described control unit.
The prompt unit setting in the reamer body or is expanded on marrow brill in one of the embodiments,.
The prompt unit is display screen, sound generating apparatus or light emitting device in one of the embodiments,.
In one of the embodiments, it is described expand marrow reamer further include can independent control motor manual switch.
Control circuit is equipped between described control unit and motor in one of the embodiments, control circuit is to even
The power supply powered to motor is connect, is equipped with electronic switch in the control circuit, described control unit is according to the pressure sensor
Information control the disconnection or conducting of the electronic switch, make the control circuit and the separated of power supply or can be connected to.
The electronic switch is MOS transistor or relay in one of the embodiments,.
The reamer body includes shell in one of the embodiments, and the motor is arranged in the shell, described
One end of working shaft is located in the shell to be coupled with the drive shaft of the motor, and the other end stretches out the shell.
In one of the embodiments, further include the power supply powered to motor, the power supply be arranged in the shell or
Person assembles together outside shell with shell.
Detailed description of the invention
Fig. 1 is the schematic cross-sectional view for expanding marrow and boring of an embodiment；
Fig. 2 is the structural schematic diagram for expanding marrow shown in Fig. 1 and boring；
Fig. 3 is the schematic diagram for expanding the helical member that marrow bores shown in Fig. 1；
Fig. 4 is the schematic diagram of the end face of rotary structure shown in FIG. 1；
Fig. 5 is the structural schematic diagram of the expansion marrow reamer of an embodiment；
Fig. 6 is the functional block diagram shown in fig. 5 for expanding marrow reamer；
Fig. 7 is the circuit theory schematic diagram of the motor on-off control shown in fig. 5 for expanding marrow reamer.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.Many details are explained in the following description in order to fully understand this hair
It is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be not
Similar improvement is done in the case where violating intension of the present invention, therefore the present invention is not limited by the specific embodiments disclosed below.
Torque excessive problem when starting to work for medical tool, the present invention proposes a kind of with the medical of axial torque
Tool.It is illustrated so that the medical tool is to expand marrow brill and the expansion marrow reamer bored with the expansion marrow as an example below.
Fig. 1 to Fig. 3 is please referred to, the expansion marrow of one embodiment of the present of invention bores 100, and it can be used to execute and expand marrow work, including
Connecting shaft 110, drill bit 120 and adjusting component.
Connecting shaft 110 can be around the working shaft that own axes rotate to be connected to.After connecting shaft 110 and work axis connection,
It can be driven and be rotated by working shaft, and then drive 120 rotary work of drill bit.Connection type between connecting shaft 110 and working shaft is not
Limit.Such as can by directly by interference fit in a manner of connect.It can also be and be connected to working shaft by shaft coupling.And working shaft can
To be the drive shaft of motor, it is also possible to the rotary shaft driven by power device by transmission mechanism.
Drill bit 120 can be moved to axial with connecting shaft 110 but non-relative rotation manner cooperates.In other words, it bores
Axially opposite movement can only occur between first 120 and connecting shaft 110, but opposite rotational motion can not occur.As a result, when
When connecting shaft 110 drives rotation by working shaft, drill bit 120 rotates together therewith.
It adjusts component to be fixedly connected with connecting shaft 110, and has to drive the actuator of drill bit 120 axially movable
131.Actuator 131 be adjust component in can movable element, when being operated, drill bit 120 is driven along connecting shaft 110
Axial side-to-side movement is realized so as to realize the length adjustment of drill bit 120 and expands the adjustment that marrow bores 100 length.
When needing to adjust the length for expanding marrow brill 100, drive drill bit 120 relative to connecting shaft by operation actuator 131
110 elongations are shortened, to realize length adjustment.Since length is adjustable, it can shorten when expanding marrow and starting and expand marrow brill
Length, improve and expand the rigidity that marrow bores, reduce and expand torque of marrow when starting, to avoid training off, and then it is uneven to avoid expanding marrow,
Expanding after marrow bores deeply can readjust as original length.
Join Fig. 1 and Fig. 2, in an embodiment, adjusting component includes the handle 132 being fixedly connected with connecting shaft 110, wherein hand
Handle 132 has accommodation space 133, and actuator 131 is rotatably disposed in accommodation space 133, drives when actuator 132 rotates
Axial movement of the dynamic drill bit 120 along connecting shaft 110.
Connecting shaft 110 and handle 132 to be fixedly connected with mode unlimited.For example, in a kind of connection type as shown in Figure 1,
The right side opening of handle 132 is equipped with the channel being connected to accommodation space 133, and one end of connecting shaft 110 is then extend into the channel.This
Outside, connecting shaft 110 is also possible to connect in the outside of handle 132 with handle 132, such as passes through collet in the outside of handle 132
Equal quick change constructions realize connection.
A kind of structure of actuator 131 is as shown in figures 1 and 3, and wherein actuator 131 can be revolved around the axis X of connecting shaft 110
Turn.Actuator 131 is equipped with helicla flute 134 around axis X.Drill bit 120 protrudes into the inside of actuator 131, and drill bit 120 is connected with and stretches
Enter the pin shaft 121 in helicla flute 134.It is integral type or detachable connection that pin shaft 121, which can be with drill bit 120,.
Due to that can not be relatively rotated between drill bit 120 and connecting shaft 110.Therefore when actuator 131 rotates, helicla flute
134 also rotate with it on the whole, and helicla flute 134 can promote pin shaft 121 for linear motion while rotation, to make drill bit
120 along connecting shaft 110 axial movement.
When drill bit 120 is adjusted in place, the rotation of connecting shaft 110 will drive drill bit 120 to rotate.Actuator 131 also will be with
It is rotated together with connecting shaft 110, the cell wall of helicla flute 134 abuts pin shaft 121 in the axial direction at this time, limits the axial direction of drill bit 120
Movement.
Further, in the present embodiment, the inner wall of the accommodation space 133 of handle 132 be equipped in the axial direction with driving
The spring holder 135 that part 131 abuts against.Specifically, spring holder 135, which is placed in, opens up on the inner wall of accommodation space 133
Kong Zhong.As shown in figure 4, the end face of actuator 131 is equipped with multiple circumferentially disposed location holes 136.Spring holder
135 selectively limit from different location hole cooperations with the rotation of actuator 131.
For four uniformly distributed location holes 136 are set.It can define spring holder 135 and one of location hole 136
The position of drill bit 120 when cooperation is initial position, and drill bit 120 is in maximum length relative to connecting shaft at this time, entire to expand
Marrow bores 100 length longest.Start when expanding marrow, when needing to shorten 120 length of drill bit, actuator can be made with turn actuator 131
131 overcome spring holder 135 to act on the component of the elastic force of actuator 131 in a circumferential direction, when actuator 131 turns to
When next location hole 136 cooperates with spring holder 135, that is, realize a length adjustment.In this way, as needed, adjustment is bored
First 120 to needs length, then using spring holder 135 relocate.The quantity of location hole 136 is bored according to each adjust
Depending on degree of regulation required for first 120.
Further, in the present embodiment, actuator 131 includes the helical member 1311 being set to outside drill bit 120 and sets
The rotary structure 1312 being placed in outside helical member 1311.Rotary structure 1312 is fixedly connected with helical member 1311.Helicla flute 134 is set
It sets outside helical member 1311.The end face of rotary structure 1312 is then arranged in location hole 136.In this way, operator is rotation rotation
Structure 1312 is moved rotate actuator 131, had both achieved the purpose that not influenced by helicla flute 134 when operation, and had in turn simplified simultaneously
The structure of actuator 131 designs.Also, helicla flute 134 not visible from outside provides a clean and tidy appearance.Rotary structure
1312 outer surface includes at least one ridge.Preferably, ridge at least partially projects over the surface of shell 132.When operation,
Speckling with human body or the intracorporal tissue fluid of animal on hand and can also be realized easily by stirring ridge to turn even if medical worker
The rotation of structure 1312 improves operation ease to simplify surgical procedure.
Further, the outside of helical member 1311 offers pin shaft hole 137.Pin shaft hole 137 can place holding pin 138.Tightly
Gu the pin shaft hole 137 prominent slightly of pin 138.The presence of holding pin 138, which is equivalent to, increases the fit dimension of helical member 1311, thus
It is interference fitted helical member 1311 by holding pin 138 and rotary structure 1312.
In one embodiment, to be nested between connecting shaft 110 and drill bit 120, and connecting shaft 110 and drill bit 120 it
Between be equipped with the pilot unit that rotate relative to connecting shaft 110 of limitation drill bit 120, the nested arrangements can be located at for connecting shaft 110
In the inner cavity of drill bit 120, drill bit 120 can also be located in the inner cavity of connecting shaft 110.
As Fig. 1 illustrates a kind of structure of pilot unit.Pilot unit includes the sliding groove 122 being arranged on drill bit 120,
And the limited post 112 constrained by sliding groove 122 in connecting shaft 110 is set.Limited post 112 with sliding groove 122 by matching
It closes and drill bit 120 is hindered to rotate relative to connecting shaft 110, drill bit 120 is enable to be moved along a straight line by driving.Sliding groove 122 and limit
The position of column 112 can be interchanged.
Ginseng Fig. 1 illustrates between connecting shaft 110 and drill bit 120 a kind of specific structure of connecting shaft 110 when to be nested.
Wherein connecting shaft 110 is set as hollow shaft, and one end of drill bit 120 is then protruded into one end of connecting shaft 110.Connecting shaft 110
The other end then can be to accommodate working shaft, to receive the torque of working shaft transmitting.
It is rotated in addition, drill bit 120 can also be limited in other way relative to connecting shaft 110.For example, handle 132
It is equipped with guide pin in accommodation space 133 to constrain drill bit 120, keeps drill bit 120 for linear motion.
In addition, actuator 132 is also not necessarily limited to the structure of above-described embodiment description.For example, actuator 132 can be gear,
Drive drill bit 120 for linear motion by rack structure.For another example, threaded engagement between actuator 132 and drill bit 120, and drill bit
120 limited using pilot unit rotation and can only be for linear motion.
Referring to FIG. 5, one embodiment of the present of invention, additionally provides a kind of expansion marrow reamer.As described in Figure 5, expand marrow reamer
Expansion marrow including previous embodiment bores 100 and reamer body 200, and wherein have can be around own axis for reamer body 200
Working shaft 210, the connecting shaft 110 for expanding marrow brill 100 are connect with working shaft 210.Reamer body 200 includes at least can be around own axes
The working shaft 210 of rotation, can also be integrated with power mechanism, power supply etc..
When working shaft 210 rotates, connecting shaft 110 is driven to rotate and drill bit 120 is driven to rotate, to carry out expansion marrow.
Since the length for expanding drill bit 120 in marrow brill 100 is adjustable, the length for expanding marrow and boring can be shortened when expanding marrow and starting, improve expansion
The rigidity that marrow bores reduces the torque expanded when marrow starts, to avoid training off, and then avoids expansion marrow uneven, after expansion marrow bores deeply
It can readjust as original length.
In one embodiment, as shown in Figure 5 and Figure 6, reamer body 200 includes the motor that driving working shaft 210 rotates
220, the control unit 230 that control motor 220 operates, wherein drill bit 120 is equipped with pressure sensor 140, pressure sensor 140
It is communicated to connect between control unit 230, control unit 230 controls the fortune of motor 220 according to the information of pressure sensor 140
Turn.
The pressure that drill bit 120 is born when pressure sensor 140 expands marrow to detect.It can be resistance strain gage pressure biography
Sensor, semiconductor gauge pressure sensor, piezoresistive pressure sensor, inductance pressure transducer, capacitive pressure sensing
Device, resonance type pressure sensor etc..
Control unit 230 can be embedded dsp (Digital Signal Processor, DSP),
Microprocessor (Micro Processor Unit, MPU), specific integrated circuit (Application Specific
Integrated Circuit, ASIC), on programmable logic device (Programmable Logic Device, PLD) core be
System (System on Chip, SOC), central processing unit (Central Processing Unit, CPU) or field-programmable
Gate array (Field Programmable Gate Array, FPGA).It is appreciated that the present embodiment not limiting control device 230
Concrete type.
Control unit 230 controls the operating of motor 220 according to preset pressure threshold value, when the pressure that drill bit 120 is born is super
When crossing preset pressure threshold value, control unit 230 is the power supply for disconnecting motor 220, stalls motor 220 automatically, avoids expanding marrow
It is uneven to occur.For example, stress is 5N if normal, the power supply of motor 220 is disconnected when can set more than 8N automatically, makes motor 220
Automatic stalling avoids expansion marrow from unevenly occurring.
Above-mentioned expansion marrow reamer, since the operating pressure of drill bit 120 can be monitored in real time provided with pressure sensor 140,
Automatic shutdown protection when realizing over-voltage, so that expansion marrow be avoided unevenly to occur.
Pressure sensor 140 can integrate on expanding the drill bit 120 that marrow bores 100, and when use, which directly selects, suitable expands marrow
100 are bored to be coupled with reamer body 200.
In one embodiment, expanding marrow reamer further includes prompt unit 240.Prompt unit 240 controls work by control unit 230
Make.Specifically, prompt unit 240 can be set in reamer body 200 or expand on marrow brill 100 to current to operator's prompt
Pressure value situation.As shown in figure 5, prompt unit 240 is arranged in the connecting shaft 110 for expanding marrow brill 100.
Prompt unit 240 can be display screen, the pressure on the number that real-time display drill bit 120 is born.When motor 220 stalls
When, operator can be shut down by checking that display screen is known since pressure reaches to protect caused by threshold values.In another example prompt is single
Member 240 can be sound generating apparatus.It at this time can be by not at the increase of decibel or different types of auditory tone cues pressure.
Prompt unit 240 can also be light emitting device, and the increase of pressure is prompted by way of light color, brightness or a combination thereof.
By the way that prompt unit 240, the reason of operator can know shutdown is arranged.Further, it is also possible in autostop
When failure, according to the prompt of prompt unit 240, manual power-off protection is selected.
With reference to Fig. 7, a kind of principle of implementation that the control of control unit 230 motor 220 works is illustrated.Control unit
Control circuit 250 is equipped between 230 and motor 240.Control circuit 250 is to be connected to the power supply 260 powered to motor 220.
Electronic switch 251 is equipped in control circuit 250.Control unit 230 controls electronic switch 251 according to the information of sensor 130
It disconnects or conducting, makes control circuit 250 and the separated of power supply 260 or can be connected to.
Electronic switch 251 is according to preset condition turning circuit or disconnecting circuit.For example, electronic switch 251 can be brilliant for MOS
Body pipe or relay.
Further, in one embodiment, expand marrow reamer further include can independent control motor 220 manual switch 270.Hand
Dynamic switch 270 is connected in circuit with electronic switch 251 above-mentioned, and the two can independently control motor 220.Specifically, hand
Dynamic switch 270 can use single-pole double-throw switch (SPDT), can be used to drive motor 220 and disconnect motor 220 manually when needed
Power supply.
In one embodiment, reamer body 200 includes shell 280.Motor 220 is arranged in shell 280.Working shaft 210
One end be located in shell 280 and be coupled with the drive shaft of motor 220, the other end stretches out shell 280.
Shell 280 is the load bearing component of the other elements such as motor 220.Shell 280 can be spliced for left and right two parts
Hafu-type.In the present embodiment, the grip part 281 held for operator is formed on shell 280.Grip part 281 and shell
It is substantially in 90 degree between the other parts of body 280.Shell 280 is in pistol type on the whole.
Settable gear train assembly between working shaft 210 and the drive shaft of motor 220, to expand the selection model of motor
It encloses.In structure as shown in Figure 5, it is provided with level-one bevel gear system.
Further, in this embodiment reamer body 200 further includes the power supply 260 powered to motor 220, wherein power supply
260 are arranged in shell 280.In addition, power supply 260 is also possible to assemble together in 280 outside of shell with shell 280.At this point,
280 outer wall of shell is equipped with power supply installation position.Reamer body 200 is integrated with power supply 260, and Wireless influences when use, operates
It is convenient.
Power supply 260 can be battery pack.There is one or more battery packs in battery pack.Each battery pack has one
A or multiple battery.
In other examples, reamer body 200 either internally or externally do not include power supply.Wherein reamer body 200
It is reserved with the power interface connecting with internal control circuit 250.The power interface may be coupled to external power supply, such as alternating current
Or mobile power source.
Embodiment provided by the present invention is preferably that a kind of expansion marrow bores and expand marrow reamer, but skill provided by the present invention
Art scheme can be adapted for other and need on the medical tool or medical instrument of rotation torque.
Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield all should be considered as described in this specification.
Only several embodiments of the present invention are expressed for above embodiments, and the description thereof is more specific and detailed, but can not
Therefore it is construed as limiting the scope of the patent.It should be pointed out that for those of ordinary skill in the art,
Under the premise of not departing from present inventive concept, various modifications and improvements can be made, and these are all within the scope of protection of the present invention.
Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (12)
1. a kind of medical tool characterized by comprising
Connecting shaft, can be around the working shaft that own axes rotate to be connected to；
Drill bit is driven by the connecting shaft and is rotated, can moved to axial with the connecting shaft but not relatively turnable side
Formula cooperation；
Component is adjusted, is fixedly connected with the connecting shaft, is had to drive the actuator of the drill bit axially movable.
2. medical tool according to claim 1, which is characterized in that the adjusting component includes being fixedly connected with connecting shaft
Handle, the handle has accommodation space, and the actuator is rotatably disposed in the accommodation space, the actuator
The drill bit is driven when rotation axially movable.
3. medical tool according to claim 2, which is characterized in that the actuator can be rotated around the axis of connecting shaft,
The actuator is equipped with helicla flute around the axis, and the drill bit protrudes into the inside of the actuator, and drill bit is connected with and protrudes into
Pin shaft in the helicla flute.
4. medical tool according to claim 3, which is characterized in that the inner wall of the accommodation space of the handle is equipped with
The spring holder abutted against in axial direction with the actuator, the end face of the actuator are equipped with multiple circumferentially disposed
Location hole, the spring holder is selectively from different location hole cooperation limitations with the rotation of the actuator.
5. medical tool according to claim 4, which is characterized in that the actuator includes the spiral shell for being set to bit exterior
Rotating part and the rotary structure being set to outside helical member, the rotary structure are fixedly connected with helical member, the helicla flute setting
Outside helical member, the end face of rotary structure is arranged in the location hole.
6. medical tool according to claim 1, which is characterized in that be nested between the connecting shaft and drill bit,
And it is equipped between the connecting shaft and drill bit and limits the pilot unit that the drill bit is rotated relative to the connecting shaft.
7. medical tool according to claim 6, which is characterized in that the pilot unit includes being arranged in connecting shaft or brill
Sliding groove in head alternative one, is arranged in the limited post constrained by the sliding groove on another.
8. medical tool according to claim 6, which is characterized in that the connecting shaft be hollow shaft, the one of the drill bit
End is protruded into the connecting shaft.
9. medical tool according to any one of claims 1 to 8, which is characterized in that further include:
Reamer body, having can be around the working shaft of own axis；
The connecting shaft and the work axis connection.
10. medical tool according to claim 9, which is characterized in that the reamer body includes driving the working shaft
The motor of rotation, the control unit for controlling the motor running, the drill bit are equipped with pressure sensor, the pressure sensor
It is communicated to connect between control unit, described control unit controls the fortune of the motor according to the information of the pressure sensor
Turn.
11. medical tool according to claim 10, which is characterized in that further include prompt unit, the prompt unit by
Described control unit controls work.
12. medical tool according to claim 10, which is characterized in that be equipped with control between described control unit and motor
Circuit, control circuit are equipped with electronic switch, described control unit in the control circuit to connect the power supply powered to motor
The disconnection or conducting that the electronic switch is controlled according to the information of the pressure sensor, make between the control circuit and power supply
It disconnects or can be connected to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711175754.0A CN109805981B (en) | 2017-11-22 | 2017-11-22 | Medical tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711175754.0A CN109805981B (en) | 2017-11-22 | 2017-11-22 | Medical tool |
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|---|---|
| CN109805981A true CN109805981A (en) | 2019-05-28 |
| CN109805981B CN109805981B (en) | 2024-02-27 |
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| CN201711175754.0A Active CN109805981B (en) | 2017-11-22 | 2017-11-22 | Medical tool |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116392196A (en) * | 2023-06-09 | 2023-07-07 | 杭州锐健马斯汀医疗器材有限公司 | Retrograde drill |
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| CN217723615U (en) * | 2022-03-31 | 2022-11-04 | 中国人民解放军海军军医大学第一附属医院 | Changeable grinding drill bit for orthopedics |
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Cited By (2)
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| CN116392196A (en) * | 2023-06-09 | 2023-07-07 | 杭州锐健马斯汀医疗器材有限公司 | Retrograde drill |
| CN116392196B (en) * | 2023-06-09 | 2023-08-11 | 杭州锐健马斯汀医疗器材有限公司 | Retrograde drill |
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