CN207949840U - A kind of cranium brain tube chamber multijaw synchronization step-less adjustment extension fixture - Google Patents
A kind of cranium brain tube chamber multijaw synchronization step-less adjustment extension fixture Download PDFInfo
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- CN207949840U CN207949840U CN201820069892.4U CN201820069892U CN207949840U CN 207949840 U CN207949840 U CN 207949840U CN 201820069892 U CN201820069892 U CN 201820069892U CN 207949840 U CN207949840 U CN 207949840U
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- expansion
- helical
- expansion pipe
- extension fixture
- pushing block
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Abstract
The utility model is related to medical instruments fields, and in particular to a kind of cranium brain tube chamber multijaw synchronization step-less adjustment extension fixture, including：Shell, handwheel, helical disk, expansion part, expanded film, the quantity of expansion part is multiple, each expansion part includes pushing block and expansion pipe, spiral engaging tooth is provided on pushing block, pushing block is engaged circumferentially distributed setting by spiral engaging tooth on helical disk with helical rack and is accommodated in guide groove；One end of expansion pipe is connect with pushing block, and the other end stretches out centre bore, lower through-hole successively, and expanded film is arranged on multiple expansion pipes.It rotates handwheel and drives spiral disc spins, helical rack on helical disk makes pushing block promote and release and be oriented to by guide groove along the radial of helical disk, so that expanded film is gradually tapered up and is opened with expansion pipe, helical rack and spiral engaging tooth shape at engage with self-locking function, it expands the extended region that pipe is formed and keeps stable state, realize and stepless and quantitative adjusting is carried out to expansion pipe.
Description
Technical field
The utility model is related to medical instruments fields, and step-less adjustment is synchronized in particular to a kind of cranium brain tube chamber multijaw
Extension fixture.
Background technology
Since the interior tumour or vascular lesion of brain have the characteristics that position is deep, situation is complicated, and brain tissue is very tender,
So being easy to be damaged.When carrying out brain intra-operative, the clinical operations approach such as rash approach is made through cortex and gets to lesion
Area inevitably causes complicated brain tissue impairment because instrument passes through in this process.The operation of brain interior zone
It is known as approach complexity, surgical procedure is difficult, art area anthemorrhagic difficulty and complete to cut rate not high.
Existing patent of invention CN106994027A discloses brain tissue and struts device, and it includes strutting which, which struts device,
Device main body, fixing device, inner core and locking member.It is right again after then brain tissue traction is fixed by making rash from cortex region
Deep carries out specific aim operation.Because the good visual field of exposure can make operation become very intuitive, the operations such as excision are more targeted,
Stopping blooding around art area will also become to be easy to.But its is complicated for operation, do not have step-less adjustment function, can not quantify pair
Extended region size is adjusted.
Invention content
To solve the above problems, the purpose of this utility model is to provide it is a kind of can quantify and step-less adjustment cranium brain pipe
Chamber multijaw synchronizes step-less adjustment extension fixture.
The purpose of this utility model is achieved through the following technical solutions：
A kind of cranium brain tube chamber multijaw provided by the utility model synchronizes step-less adjustment extension fixture, including：Shell, handwheel,
Helical disk, expansion part, expanded film offer corresponding upper through-hole and lower through-hole on shell, and circumferential point is offered in shell
Multiple guide grooves of cloth offer centre bore on helical disk, and helical disk is movably arranged in shell, handwheel be arranged on shell with
Helical disk is drivingly connected, and helical rack is provided on helical disk；The quantity of expansion part is multiple, and each expansion part includes pushing block
And expansion is managed, and is provided with spiral engaging tooth on pushing block, pushing block engages by spiral engaging tooth with helical rack circumferentially distributed
It is arranged on helical disk and is accommodated in guide groove；Expansion pipe one end connect with pushing block, the other end stretch out successively centre bore,
Lower through-hole, expanded film are arranged on multiple expansion pipes.
Further, it is rectangular that the section on the outside of expansion pipe, which is round, inside section,.
Further, expansion pipe includes the bending section towards centre bore.
Further, the other end for expanding pipe is provided with ball, the end connection of multiple balls and expanded film.
Further, expansion part further includes expansion pipe sleeve, and expansion pipe sleeve is in bending, offers sets of holes on pushing block, expands
It opens pipe sleeve to be mounted in sets of holes, expansion pipe is threaded through in expansion pipe sleeve.
Further, the bending for expanding pipe sleeve is rectangular, and the horizontal segment at right angle is provided with short muscle, and the vertical section at right angle is set
It is equipped with high muscle, the end set for expanding pipe sleeve has convenient for that will expand the joining section that pipe sleeve is connect with expansion pipe.
Further, gear cavity is offered on shell, extension fixture further includes gear and shaft, and shaft is movably arranged on tooth
Intracavitary is taken turns, gear set engages in shaft and with helical disk, and shaft is stretched out shell and connect with handwheel.
Further, extension fixture further includes square column, and square column is wholely set with shaft, and square column is embedded in handwheel.
Further, gear is helical gear, and the circumference of helical disk is provided with helical teeth, and helical gear is nibbled with the helical teeth on helical disk
It closes.
Further, it is provided with gear hobbing type groove on handwheel, handle is provided on shell.
The cranium brain tube chamber multijaw of the utility model synchronizes in step-less adjustment extension fixture, and rotation handwheel drives spiral to spiral
Turn, the helical rack on helical disk makes pushing block promote and release and be oriented to by guide groove along the radial of helical disk, makes
Expanded film is gradually tapered up and is opened with expansion pipe, helical rack and spiral engaging tooth shape at engage with self-locking function,
Therefore in the case of not adjusting handle, the extended region that expansion pipe is formed keeps stable state, realization to form expansion pipe
The diameter of cylindrical region carries out stepless and quantitative adjusting, easy to operate accurate.
Description of the drawings
Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application,
The exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the improper of the utility model
It limits.In the accompanying drawings：
Fig. 1 is a kind of external structure of angle when extension fixture is expanded in the utility model；
Fig. 2 is the external structure of another kind angle when extension fixture is expanded in the utility model；
Fig. 3 is external structure when extension fixture is shunk in the utility model；
Fig. 4 is internal structure chart when extension fixture is expanded in the utility model；
Fig. 5 is internal structure chart when extension fixture is shunk in the utility model；
Fig. 6 is the structure chart of helical disk in the utility model；
Fig. 7 is the sectional view of handwheel and shaft in the utility model；
Fig. 8 is a kind of structure chart of angle of pushing block in the utility model；
Fig. 9 is the structure chart of pushing block another kind angle in the utility model；
Figure 10 is the sectional view of the utility model middle casing；
Figure 11 is the structure chart of expansion pipe and expansion pipe sleeve in the utility model；
Figure 12 is the structure chart of expansion pipe and expanded film in the utility model；
Wherein reference numeral is：1, shell；2, handwheel；3, helical disk；4, expanded film；5, upper through-hole；6, lower through-hole；7、
Guide groove；8, centre bore；9, helical rack；10, pushing block；11, expansion pipe；12, spiral engaging tooth；13, bending section；14, circle
Pearl；15, pipe sleeve is expanded；16, sets of holes；17, joining section；18, gear cavity；19, gear；20, shaft；21, square column；22, helical teeth；
23, gear hobbing type groove；24, handle；25, sleeve.
Specific implementation mode
In order to make those skilled in the art more fully understand the utility model, below in conjunction with the utility model reality
The attached drawing in example is applied, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment is only the embodiment of the utility model part, instead of all the embodiments.Based on the reality in the utility model
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts is all answered
When the range for belonging to the utility model protection.
As shown in Fig. 1 to 12, a kind of cranium brain tube chamber multijaw of the utility model embodiment synchronizes step-less adjustment extension fixture,
Including：Shell 1, handwheel 2, helical disk 3, expansion part, expanded film 4 offer corresponding upper through-hole 5 and lower logical on shell 1
Hole 6 offers circumferentially distributed multiple guide grooves 7 in shell 1, and centre bore 8,3 activity setting of helical disk are offered on helical disk 3
In shell 1, handwheel 2 is arranged on shell 1 to be drivingly connected with helical disk 3, and helical rack 9 is provided on helical disk 3；Expansion part
Quantity be multiple, each expansion part includes pushing block 10 and expansion pipe 11, is provided with spiral engaging tooth 12 on pushing block 10, pushes away
Circumferentially distributed setting is engaged with helical rack 9 on helical disk 3 by spiral engaging tooth 12 into block 10 and is accommodated in guide groove 7
It is interior；One end of expansion pipe 11 is connect with pushing block 10, and the other end stretches out centre bore 8, lower through-hole 6 successively, and the setting of expanded film 4 exists
On multiple expansion pipes 11.
The cranium brain tube chamber multijaw of the utility model synchronizes in step-less adjustment extension fixture, and rotation handwheel 2 drives helical disk 3 to revolve
Turn, the helical rack 9 on helical disk 3 is so that pushing block 10 is promoted and released and led by guide groove 7 along the radial of helical disk 3
To so that expanded film 4 is gradually tapered up and is opened with expansion pipe 11, and helical rack 9 engages tool with what spiral engaging tooth 12 was formed
There is self-locking function, therefore in the case of not adjusting handle 2, the extended region that expansion pipe 11 is formed keeps stable state, realizes
Stepless and quantitative adjusting is carried out to the diameter of the cylindrical region of the expansion formation of pipe 11, it is easy to operate accurate.
Preferably, referring to Figure 11, it is rectangular that the section in 11 outside of expansion pipe, which is round, inside section, increases expansion
Open the ability that pipe 11 resists bending and torsional deformation.Expansion pipe 11 includes the bending section 13 towards centre bore 8, is expanded under pipe 11
There is one section of bending section 13 at end, plays the effect of gathering.The other end of expansion pipe 11 is provided with ball 14, multiple balls 14 and expansion
The end of film 4 connects, and 11 end of expansion pipe is ball 14, for playing fixed booster action with expanded film 4 to expansion pipe 11.
Preferably, referring to Figure 11, expansion part further includes expansion pipe sleeve 15, and expansion pipe sleeve 15 is in bending, pushing block 10
On offer sets of holes 16, expansion pipe sleeve 15 is mounted in sets of holes 16, and expansion pipe 11 is threaded through in expansion pipe sleeve 15.Expand pipe sleeve 15
Bending it is rectangular, the horizontal segment at right angle is provided with short muscle, and the vertical section at right angle is provided with high muscle, expands the end of pipe sleeve 15
It is provided with convenient for the joining section 17 that pipe sleeve 15 is connect with expansion pipe 11 will be expanded.
It is L-shaped to expand pipe 11, expands and is fixedly connected between pipe 11 and pushing block 10 by expanding pipe sleeve 15, outside is provided with
Expand pipe sleeve 15, the state for keeping dogleg section.The design of expansion 15 cross sectional shape of pipe sleeve can allow pipe sleeve state herein
It is kept in long range, the deformations such as will not twist, and intensity will not be made to change after pipe sleeve bending downwards, cut
Face upper side is short muscle, and lower end side is high muscle, and upper side can be ensured to reinforcing rib after lumen distention not using short muscle
The size of rear region can be influenced to expand, while also can guarantee that the intensity of pipe sleeve will not be distorted deformation under external force.
Preferably, referring to Fig. 7,10, gear cavity 18 is offered on shell 1, extension fixture further includes gear 19 and shaft
20, shaft 20 is movably arranged in gear cavity 18, and gear 19 is sleeved in shaft 20 and is engaged with helical disk 3, and shaft 20 is stretched out
Shell 1 is connect with handwheel 2.Extension fixture further includes square column 21, and square column 21 is wholely set with shaft 20, and square column 21 is embedded in
In handwheel 2.Gear 19 is helical gear, and the circumference of helical disk 3 is provided with helical teeth 22, and helical gear is nibbled with the helical teeth 22 on helical disk 3
It closes.
Square column 21 is fixed as one with shaft 20, is interference fitted between shaft 20 and gear 19, while square column 21 is embedded
For plug in handwheel 2, the rotation for controlling gear 19 that handwheel 2 can be allowed to stablize is not in the case where handwheel 2 dallies.In shaft
Sleeve 25 is provided between 20 and shell 1, the position restriction axial for shaft 20.The gear cavity 18 of shaft 20 and shell 1 it
Between be provided with bearing, can relatively rotate.Helical disk is formed on 3 end face between the helical rack 9 being arranged and pushing block 10
Gear coordinates, and spiral engaging tooth 12 is provided on pushing block 10, and the gear cooperation that helical rack 9 is formed has self-locking function.
Guide groove 7 is provided in shell 1, for pushing block 10 to be limited and is oriented to.Pushing block 10 is justified with guide groove 7 along shell 1
Circumferential direction is uniformly arranged several.Helical rack 9 can drive all pushing blocks 10 while act.Set is provided on pushing block 10
Hole 16, for installing expansion pipe sleeve 15.
Preferably, being provided with gear hobbing type groove 23 on handwheel 2, handle 24 is provided on shell 1.Shell 1 is cylindrical empty
Cavity configuration is provided with gear cavity 18 and guide groove 7 in shell 1, handwheel 2 and hand is respectively arranged at 1 radial direction both ends of shell
Handle 24.The side wall circle distribution of handwheel 2 has gear hobbing type groove 23, for increasing the frictional force between hand and handwheel 2.Handle 24 is item
Shape is put into for holding the present apparatus during operation and waits for surgery location.
The round tube hole of the upper surface of shell 1 and lower face setting, i.e., upper through-hole 5 and lower through-hole 6, the diameter of round tube hole are bigger
Outer diameter after channel is expanded, cannot there be blocking in upper and lower position after the expansion of channel, in order to avoid influence the operation of operation.In shell 1
It is coaxially arranged with helical disk 3, the corresponding region in 9 center of circle of helical rack is provided with circular through hole, i.e. centre bore 8, and round logical
The diameter in hole is provided with bearing between helical disk 3 and shell 1, can relatively rotate slightly larger than the outer diameter after the expansion of channel.Spiral
Helical rack 9 is provided on 3 end face of disk, side is provided with helical teeth 22.3 side of helical disk forms gear cooperation with gear 19.
Expansion pipe 11, expansion pipe sleeve 15, pushing block 10, guide groove 7 are all correspondingly arranged, uniformly distributed along 1 circumferencial direction of shell
Setting.Need setting 6 or more so that extension mouth tends to be round, more preferably performs the operation, and example uses 16 herein.Because setting
The number set determines the shape of extension mouth, so in the case where space is abundant, quantity is as more as possible.It is viscous to expand 11 outside of pipe
It is connected to expanded film 4, expanded film 4 is cylindrical shape, has certain gathering in the bending section 13 of expansion pipe 11.
When in use, the original state of extension fixture is contraction state in the utility model, and all expansion pipes 11 are contracted in
Together, expanded film 4 is also shunk together, is waited in surgical tissue convenient for stretching into, and handwheel 2 is then rotated, and handwheel 2 passes through gear 19
It drives helical disk 3 to rotate, drives each pushing block 10 to be slided simultaneously along guide groove 7 by helical rack 9, pushing block 10 drives respectively
A expansion pipe 11 is carried out at the same time expansion action, and expanded film 4 is gradually opened with expansion pipe 11, and the gear that helical rack 9 is formed is matched
Closing has self-locking function, therefore in the case of not adjusting handle 2, and the extended region that expansion pipe 11 is formed keeps stable state.
Dilation procedure is completed, the cylinder that can be formed here to expansion pipe 11 by handwheel 2, gear 19 and helical disk 3, pushing block 10
The diameter in region carries out stepless and quantitative adjusting, easy to operate accurate.
The innovative point of the utility model is：
1. the cylindrical region that can be formed to expansion pipe 11 by handwheel 2, gear 19 and helical disk 3, pushing block 10
Diameter carries out stepless and quantitative adjusting, easy to operate accurate.
2. forming gear cooperation on 3 end face of helical disk between the helical rack 9 being arranged and pushing block 10, set on pushing block 10
It is equipped with spiral engaging tooth 12, the gear cooperation that helical rack 9 is formed has self-locking function.
3. expansion pipe 11, expansion pipe sleeve 15, pushing block 10, guide groove 7 are all correspondingly arranged, equal along 1 circumferencial direction of shell
Cloth is arranged.Need setting 6 or more so that extension mouth tends to be round, more preferably performs the operation.Because the number being arranged determines expansion
The shape dehisced, so in the case where space is abundant, quantity is as more as possible.
4. it is L-shaped to expand pipe 11, expands and be fixedly connected between pipe 11 and pushing block 10 by expanding pipe sleeve 15, outside setting
There are expansion pipe sleeve 15, the state for keeping dogleg section.The design of expansion 15 cross sectional shape of pipe sleeve can allow pipe sleeve shape herein
State is kept in long range, and the deformations such as will not twist, and intensity will not be made to change after pipe sleeve bending downwards,
Section upper side is short muscle, and lower end side is high muscle, and upper side can be ensured using short muscle to reinforcing rib after lumen distention
The size of expansion rear region is not interfered with, while can guarantee that the intensity of pipe sleeve will not be distorted deformation under external force yet.
5. it is rectangular for outer circular, inside to expand the section of pipe 11, also increases expansion pipe 11 and resist bending and distortion change
The ability of shape.There is one section of bending section 13 in 11 lower end of expansion pipe, plays the effect of gathering, 11 end of expansion pipe is ball 14, is used for
Fixed booster action is played with expanded film 4 to expansion pipe 11.
6. being bonded with expanded film 4 outside expansion pipe 11, expanded film 4 is cylindrical shape, in the bending section 13 of expansion pipe 11
There is certain gathering.Expanded film 4 being capable of effective protection surrouding brain tissue.
7. when in use, the original state of extension fixture is contraction state in the utility model, all expansion pipes 11 are shunk
Together, expanded film 4 is also shunk together, is waited in surgical tissue convenient for stretching into.
8. rotating handwheel 2, handwheel 2 drives helical disk 3 to rotate by gear 19, and each propulsion is driven by helical rack 9
Block 10 is slided along guide groove 7 simultaneously, and pushing block 10 drives each expansion pipe 11 to be carried out at the same time expansion action.
9. expanded film 4 is gradually opened with expansion pipe 11, the gear cooperation that helical rack 9 is formed has self-locking function, because
In the case of not adjusting handle 2, the extended region that expansion pipe 11 is formed keeps stable state for this.
10. being respectively arranged with handwheel 2 and handle 24 at 1 radial direction both ends of shell.2 surface of handwheel is provided with gear hobbing type groove
23, the frictional force for increasing hand and handwheel 2.Handle 24 is strip, is put into for holding the present apparatus during operation and waits performing the operation
Position.
11. square column 21 is fixed as one with shaft 20, it is interference fitted between shaft 20 and gear 19, while in square column 21
For caulked in handwheel 2, the rotation for controlling gear 19 that handwheel 2 can be allowed to stablize is not in the case where handwheel 2 dallies.
12. being provided with sleeve 25 between shaft 20 and shell 1, the position restriction axial for shaft 20.Shaft 20 with
It is provided with bearing between the gear cavity 18 of shell 1, can mutually be rotated.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (10)
1. a kind of cranium brain tube chamber multijaw synchronizes step-less adjustment extension fixture, which is characterized in that including：Shell, handwheel, helical disk,
Expansion part, expanded film offer corresponding upper through-hole and lower through-hole on the shell, and circumferential point is offered in the shell
Multiple guide grooves of cloth offer centre bore on the helical disk, and the helical disk is movably arranged in the shell, the hand
Wheel setting is drivingly connected with the helical disk on the housing, and helical rack is provided on the helical disk；The expansion part
Quantity be multiple, each expansion part includes pushing block and expansion pipe, and spiral engaging tooth, institute are provided on the pushing block
Pushing block is stated to engage circumferentially distributed setting with the helical rack by the spiral engaging tooth on the helical disk and house
In the guide groove；It is described expansion pipe one end connect with the pushing block, the other end stretch out successively the centre bore, it is lower lead to
Hole, the expanded film are arranged on multiple expansion pipes.
2. extension fixture according to claim 1, which is characterized in that the section on the outside of the expansion pipe is round, inside
Section be it is rectangular.
3. extension fixture according to claim 1, which is characterized in that the expansion pipe includes towards the centre bore
Bending section.
4. extension fixture according to claim 1, which is characterized in that the other end of the expansion pipe is provided with ball, more
A ball is connect with the end of the expanded film.
5. extension fixture according to claim 1, which is characterized in that the expansion part further includes expansion pipe sleeve, the expansion
It is in bending to open pipe sleeve, and sets of holes are offered on the pushing block, and the expansion pipe sleeve is mounted in the sets of holes, the expansion pipe
It is threaded through in the expansion pipe sleeve.
6. extension fixture according to claim 5, which is characterized in that the bending of the expansion pipe sleeve is rectangular, right angle
Horizontal segment be provided with short muscle, the vertical section at right angle is provided with high muscle, and the end set of the expansion pipe sleeve has convenient for will be described
The joining section that expansion pipe sleeve is connect with the expansion pipe.
7. extension fixture according to claim 1, which is characterized in that offer gear cavity, the expansion on the shell
Device further includes gear and shaft, and the shaft is movably arranged in the gear cavity, and the gear set is in the shaft
And engaged with the helical disk, the shaft is stretched out the shell and is connect with the handwheel.
8. extension fixture according to claim 7, which is characterized in that the extension fixture further includes square column, the side
Shape column is wholely set with the shaft, and the square column is embedded in the handwheel.
9. extension fixture according to claim 7, which is characterized in that the gear is helical gear, the week of the helical disk
Portion is provided with helical teeth, and the helical gear is engaged with the helical teeth on the helical disk.
10. extension fixture according to claim 1, which is characterized in that be provided with gear hobbing type groove, the shell on the handwheel
Handle is provided on body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820069892.4U CN207949840U (en) | 2018-01-16 | 2018-01-16 | A kind of cranium brain tube chamber multijaw synchronization step-less adjustment extension fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820069892.4U CN207949840U (en) | 2018-01-16 | 2018-01-16 | A kind of cranium brain tube chamber multijaw synchronization step-less adjustment extension fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207949840U true CN207949840U (en) | 2018-10-12 |
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ID=63733253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820069892.4U Expired - Fee Related CN207949840U (en) | 2018-01-16 | 2018-01-16 | A kind of cranium brain tube chamber multijaw synchronization step-less adjustment extension fixture |
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| Country | Link |
|---|---|
| CN (1) | CN207949840U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109924067A (en) * | 2019-04-26 | 2019-06-25 | 河南工学院 | A kind of full-automatic bacteria bastinade aperture apparatus |
| CN111358514A (en) * | 2020-03-23 | 2020-07-03 | 贵州省人民医院 | Auxiliary papillary muscle exposure device simple and convenient to operate |
| CN114010277A (en) * | 2021-10-25 | 2022-02-08 | 河北医科大学第三医院 | Adjustable channel of nucleus pulposus enucleation under unilateral binary channels mirror |
-
2018
- 2018-01-16 CN CN201820069892.4U patent/CN207949840U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109924067A (en) * | 2019-04-26 | 2019-06-25 | 河南工学院 | A kind of full-automatic bacteria bastinade aperture apparatus |
| CN111358514A (en) * | 2020-03-23 | 2020-07-03 | 贵州省人民医院 | Auxiliary papillary muscle exposure device simple and convenient to operate |
| CN114010277A (en) * | 2021-10-25 | 2022-02-08 | 河北医科大学第三医院 | Adjustable channel of nucleus pulposus enucleation under unilateral binary channels mirror |
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Granted publication date: 20181012 Termination date: 20200116 |