CN208573774U - Thyroid incision dilator - Google Patents
Thyroid incision dilator Download PDFInfo
- Publication number
- CN208573774U CN208573774U CN201820149131.XU CN201820149131U CN208573774U CN 208573774 U CN208573774 U CN 208573774U CN 201820149131 U CN201820149131 U CN 201820149131U CN 208573774 U CN208573774 U CN 208573774U
- Authority
- CN
- China
- Prior art keywords
- mounting base
- gear
- rack gear
- tooth
- flank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 210000001685 thyroid gland Anatomy 0.000 title claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000000245 forearm Anatomy 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
The utility model relates to a kind of Thyroid incision dilators, first including parallel arrangement, which struts arm and second, struts arm, first, which struts arm fixation, is connected to rack gear normal thereto, second struts the mounting base that arm is matched on rack gear equipped with slide-and-guide, be rotatably assorted the walking gear having with the flank engagement of rack gear in mounting base, walking gear is equipped with the operation portion of driving walking gear rotation, mounting base, which is equipped with, realizes mounting base and rack position locking/unlock cooperation position lockable mechanism, walking gear is combined with the clutch of itself and the flank of tooth clutch cooperation of rack gear of driving, rack gear side corresponding with the flank of tooth is equipped with the sliding positioning surface positioned at face width of tooth direction side, the flank of tooth that positioning surface is slided along rack gear extends, mounting base is equipped with the support portion with sliding positioning surface slide-and-guide cooperation.The flank of tooth of walking gear and rack gear is cooperated using disengaging type, is avoided two from strutting walking gear when arm closes up operation and is rotated, removal operation is convenient after the completion of having the advantages that operation.
Description
Technical field
The utility model relates to the field of medical instrument technology, specifically Thyroid incision dilator.
Background technique
In order to sufficiently show surgical field of view, the musculature closing of incision is avoided to influence surgical procedure, and people repeatedly
Work irregularly pulls lacerated wound caused by musculature, and the muscle by knife-edge part two sides is needed to remove and strut, and existing use is cut
Mouth dilator is realized." the Multifunctional surgical as disclosed in the patent document that China Patent No. is CN 200720032896.7
Retractor ", use two it is parallel strut arm, first, which struts arm, is connected with rack gear, and second struts arm removable installation in tooth
Item, second, which struts arm, is equipped with the walking gear cooperated with the flank of tooth of rack gear, and walking gear installs lever, rotation walking tooth
Wheel, to drive second to strut arm and slide along rack gear, second struts and is additionally provided with position local device on arm, position local device
Including pawl, the flank of tooth of pawl and rack gear cooperates, and click-fit, which has, drives its pawl head to be pressed on the torsional spring in tooth surface of rack, and pawl is logical
Crossing torsional spring can only slide when strutting arm and strutting in the flank of tooth of rack gear, and reverse locking, reliable elastic force makes dilator during surgery
Safe locking will not occur reversely to slip.There are following defects for this kind of retractor, after the completion of operation, need retractor
Two strut arm and close up in order to remove retractor, and two strut arm and close up operation and need to pin the end of pawl and make pawl
Pawl head disengage rack gear the flank of tooth complete unlock after, second can be moved strut arm and complete to reset, strut arm mobile second
There is also rotations for walking gear in the process, make troubles to operation, so that removal operation is made troubles from human body to retractor.
Summary of the invention
The present utility model purpose: to overcome defect of the existing technology, the utility model provides a kind of walking tooth
The flank of tooth of wheel and rack uses the Thyroid incision dilator of disengaging type cooperation, avoids first from strutting arm and second and struts arm and close up
Walking gear rotates when operation, and operation is facilitated to remove after the completion.
To achieve the above object, the utility model provides following technical solution:
A kind of Thyroid incision dilator, first including parallel arrangement struts arm and second struts arm, and first struts arm
Fixed to be connected to rack gear normal thereto, second struts the mounting base that arm is matched on rack gear equipped with slide-and-guide, in mounting base
Be rotatably assorted the walking gear having with the flank engagement of rack gear, and walking gear is equipped with the operation portion of driving walking gear rotation, institute
It states mounting base and is equipped with the position lockable mechanism for realizing that mounting base cooperates with rack position locking/unlock, it is characterised in that: is described
Walking gear be combined with driving itself and rack gear flank of tooth clutch cooperation clutch, rack gear side corresponding with the flank of tooth
Equipped with the sliding positioning surface for being located at face width of tooth direction side, sliding positioning surface extends along the flank of tooth of rack gear, in the mounting base
Equipped with the support portion with sliding positioning surface slide-and-guide cooperation.
By using above-mentioned technical proposal, when strutting adjusting, walking gear through clutch realize with the flank of tooth of rack gear into
Row engagement completes position locking through lockable mechanism so that can be rotated walking gear carries out position adjusting；Removing dilator operation
When, walking gear is realized through clutch and is disengaged with the flank of tooth of rack gear, can direct pull second strut arm and realize two and strut arm
Close up, to avoid the interference of walking gear, the portion's of the strutting cooperation for sliding positioning surface and mounting base guarantees to be out of gear in walking
In the case of, mounting base fits with rack reliable and stable.
Preferably, the clutch includes U-shaped sliding seat, and U-shaped sliding seat along the flank of tooth short transverse of rack gear to slide
Guiding cooperation is in mounting base, and the walking gear is mounted between two vertical side plates of U-shaped sliding seat through wheel shaft, U-shaped activity
The bottom plate of seat is equipped with threaded hole, and locating rotation is combined with clutch operation screw rod in the mounting base, and clutch operation screw rod is along U-shaped work
Dynamic seat glide direction arrangement, clutch operation screw rod are rotatably connected on the threaded hole of bottom plate, and the mounting base is equipped with for walking gear
Wheel shaft attended operation portion the relief hole that passes through of one end, relief hole is that the bar shaped extended is adapted to U-shaped sliding seat glide direction
Hole.Under structure design, clutch structure is simple, simple to operate, works at the same time reliable and stable.
Preferably, cooperate restricted clutch operation screw rod rotation angle with right between the clutch operation screw rod and mounting base
The position limiting structure of walking gear clutch position restriction should be limited.Under structure design, guarantee the determination of walking gear clutch position,
Operational issue was avoided, while playing the role of indicating positions.
Preferably, the support portion is equipped with steel ball, and support portion is through steel ball location fit on sliding positioning surface.The structure
Under design, so that the sliding of mounting base is more smoothly reliable.
The utility model is further described with reference to the accompanying drawing.
Detailed description of the invention
Fig. 1 is the utility model specific embodiment Thyroid incision dilator structural schematic diagram；
Fig. 2 is clutch structural schematic diagram in the utility model specific embodiment mounting base；
Fig. 3 is the top view of Fig. 2 component；
Fig. 4 is the cross-sectional view of the line A-A cutting along Fig. 3.
Specific embodiment
Referring to attached drawing 1 ~ 4, a kind of Thyroid incision dilator disclosed by the utility model, the first support including parallel arrangement
Open arms 1 and second struts arm 2, and first, which struts arm 1 and second, struts to have on arm 2 and be equipped at least one and operative incision part
What is cooperated struts pawl 3, and the structure for strutting pawl 3 is this field routine techniques, therefore is repeated no more to its specific structure, the first support
Open arms 1 is fixed to be connected to rack gear 4 normal thereto, and second struts the mounting base that arm 2 is matched on rack gear 4 equipped with slide-and-guide
21, being rotatably assorted in mounting base 21 has the walking gear 22 engaged with the flank of tooth 41 of rack gear 4, and walking gear 22 is equipped with driving walking
The operation portion 221 that gear 22 rotates, the mounting base 21, which is equipped with, realizes that mounting base 21 and 4 position locking of rack gear/unlock cooperate
Position lockable mechanism 5, wherein position lockable mechanism 5 includes pawl 51 and reduction torsion spring 52, and the middle part of pawl 51 is filled through pivot pivot
In mounting base 21, pawl 51 includes the pawl head 511 and handle 512 positioned at pivoting portions two sides, the flank of tooth of pawl head 511 and rack gear 41
It touches, reduction torsion spring 52 is mounted on pivot and driving claw head 511 is touched on the flank of tooth of rack gear 4, and pawl 51 passes through torsional spring 52
It can only strut at two and be slided when arm struts in the flank of tooth of rack gear 4, and reverse locking, it may make by the shank 512 of pawl 51
The flank of tooth that pawl head 511 disengages rack gear 4 realizes unlock, and the walking gear 22 is combined with the flank of tooth clutch for driving itself and rack gear 4
The clutch of cooperation, the rack gear 4 side corresponding with the flank of tooth are equipped with the sliding positioning surface positioned at face width of tooth direction side
42, sliding positioning surface 42 extends along the flank of tooth of rack gear 4, and the mounting base 21 is equipped with and sliding 42 slide-and-guide of positioning surface cooperation
Support portion 211.When strutting adjusting, walking gear is realized through clutch and is engaged with the flank of tooth of rack gear, to can be rotated
Walking gear carries out position adjusting, completes position locking through lockable mechanism；When removing dilator operation, walking gear is through clutch
Mechanism is realized to be disengaged with the flank of tooth of rack gear, can direct pull second strut arm and realize that two strut arm and close up, to avoid walking
The portion of strutting of the interference of gear, sliding positioning surface and mounting base, which cooperates, to be guaranteed when walking is out of gear, mounting base and tooth
The cooperation of item is reliable and stable.Steel ball 212 is equipped on the support portion 211, support portion 211 is through 212 location fit of steel ball in cunning
On dynamic positioning surface 42.
In this specific embodiment, the clutch includes U-shaped sliding seat 6, and U-shaped sliding seat 6 is along the flank of tooth of rack gear 4 height
The cooperation of direction slide-and-guide is spent in mounting base 21, and two vertical sides of guide groove and U-shaped sliding seat 6 can be equipped in mounting base 21
The convex ribs in 61 outside of plate realize positioning and guiding cooperation, and the walking gear 22 is mounted on two vertical sides of U-shaped sliding seat 6 through wheel shaft
Between plate 61, the bottom plate 62 of U-shaped sliding seat 6 is equipped with threaded hole, and locating rotation is combined with clutch operation spiral shell in the mounting base 21
Bar 7 is equipped with the screw rod mounting hole 215 passed through for clutch operation screw rod 7 in mounting base 21, and clutch operation screw rod 7 is along U-shaped activity
Seat 6 glide directions arrangement, clutch operation screw rod 7 are rotatably connected on the threaded hole of bottom plate 62, and the mounting base 21 is equipped with for walking
The relief hole 213 that the one end in the wheel shaft attended operation portion 221 of gear 22 passes through, relief hole 213 are and U-shaped 6 side of sliding of sliding seat
The strip-shaped hole extended to adaptation.Clutch structure is simple, simple to operate, works at the same time reliable and stable.U-shaped sliding seat 6
Bottom plate 62 be equipped with the swivel nut 621 of protrusion, in swivel nut 621 on set the threaded hole, 621 slide-and-guide of swivel nut is matched with screw rod
In mounting hole 215, and it is cased with outside swivel nut 621 preloading spring for the flank of tooth for driving walking gear in U-shaped sliding seat 6 to press to rack gear
622,622 one end of preloading spring is connected on the bottom plate 62 of U-shaped sliding seat 6, and 622 other end of preloading spring is connected to mounting base 21
On.It is compact-sized under the structure, and preloading spring 622 guarantees that the cooperation of walking gear and rack gear is reliable.
Restricted clutch operation screw rod 7 is cooperated to rotate angle with corresponding between the clutch operation screw rod 7 and mounting base 21
Limit the position limiting structure that 22 clutch position of walking gear limits.Position limiting structure can twist in portion 71 for the hand of clutch operation screw rod 7
Convex needle 711, arc-shaped slot 214 is equipped in mounting base 21, the length of arc-shaped slot 214 and 22 clutch stroke of walking gear are suitable
Match, guarantees the determination of walking gear clutch position, avoided operational issue, while playing the role of indicating positions.
In addition, first struts arm 1 and second struts arm 2 and include Forearm I for strutting pawl installation, and match with rack gear
The installation section II of conjunction, the first installation section for strutting arm 1 is the part being fixedly connected with rack gear, and second struts the installation of arm 2
Part is the mounting base, and Forearm is hingedly mounted on installation section.In this way so that first strut arm and second strut arm with
The radian of human body naturally droops, and is conducive to strut arm and is bonded with human skin surface, is conducive to surgical procedure.
Claims (4)
1. a kind of Thyroid incision dilator, first including parallel arrangement struts arm and second struts arm, and first to strut arm solid
Surely it is connected to rack gear normal thereto, second struts the mounting base that arm is matched on rack gear equipped with slide-and-guide, turns in mounting base
The dynamic walking gear being combined with the flank engagement of rack gear, walking gear is equipped with the operation portion of driving walking gear rotation, described
Mounting base, which is equipped with, realizes mounting base and rack position locking/unlock cooperation position lockable mechanism, it is characterised in that: described
Walking gear is combined with the clutch of itself and the flank of tooth clutch cooperation of rack gear of driving, and rack gear side corresponding with the flank of tooth is set
There is the sliding positioning surface positioned at face width of tooth direction side, sliding positioning surface extends along the flank of tooth of rack gear, sets in the mounting base
There is the support portion with sliding positioning surface slide-and-guide cooperation.
2. Thyroid incision dilator according to claim 1, it is characterised in that: the clutch includes U-shaped sliding seat,
U-shaped sliding seat is with along the cooperation of the flank of tooth short transverse slide-and-guide of rack gear, in mounting base, the walking gear is installed through wheel shaft
Between two vertical side plates of U-shaped sliding seat, the bottom plate of U-shaped sliding seat is equipped with threaded hole, and locating rotation is matched in the mounting base
Conjunction has clutch operation screw rod, and clutch operation screw rod arranges that clutch operation screw rod is rotatably connected in bottom plate along U-shaped sliding seat glide direction
On threaded hole, the mounting base is equipped with the relief hole passed through for the one end in the wheel shaft attended operation portion of walking gear, relief hole
To be adapted to the strip-shaped hole extended with U-shaped sliding seat glide direction.
3. Thyroid incision dilator according to claim 2, it is characterised in that: the clutch operation screw rod and mounting base it
Between cooperate restricted clutch operation screw rod rotation angle to limit with corresponding limitation walking gear clutch position position limiting structure.
4. Thyroid incision dilator according to claim 1, it is characterised in that: the support portion is equipped with steel ball, support
Portion is through steel ball location fit on sliding positioning surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820149131.XU CN208573774U (en) | 2018-01-29 | 2018-01-29 | Thyroid incision dilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820149131.XU CN208573774U (en) | 2018-01-29 | 2018-01-29 | Thyroid incision dilator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208573774U true CN208573774U (en) | 2019-03-05 |
Family
ID=65502720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820149131.XU Expired - Fee Related CN208573774U (en) | 2018-01-29 | 2018-01-29 | Thyroid incision dilator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208573774U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113317831A (en) * | 2021-07-09 | 2021-08-31 | 莒县人民医院 | Distractor for spinal surgery |
| CN113907813A (en) * | 2021-11-15 | 2022-01-11 | 成都八大处医疗美容医院有限公司 | Surgical dilator |
| WO2022141834A1 (en) * | 2020-12-31 | 2022-07-07 | 杭州德晋医疗科技有限公司 | Interventional instrument manipulation accessory and interventional medical system |
| CN115500878A (en) * | 2022-09-27 | 2022-12-23 | 四川大学华西医院 | Olif operation passageway distraction device |
-
2018
- 2018-01-29 CN CN201820149131.XU patent/CN208573774U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022141834A1 (en) * | 2020-12-31 | 2022-07-07 | 杭州德晋医疗科技有限公司 | Interventional instrument manipulation accessory and interventional medical system |
| CN113317831A (en) * | 2021-07-09 | 2021-08-31 | 莒县人民医院 | Distractor for spinal surgery |
| CN113907813A (en) * | 2021-11-15 | 2022-01-11 | 成都八大处医疗美容医院有限公司 | Surgical dilator |
| CN115500878A (en) * | 2022-09-27 | 2022-12-23 | 四川大学华西医院 | Olif operation passageway distraction device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190305 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |