CN205885498U - Ultrasonic knife head with centre gripping arm driving device - Google Patents
Ultrasonic knife head with centre gripping arm driving device Download PDFInfo
- Publication number
- CN205885498U CN205885498U CN201620627944.6U CN201620627944U CN205885498U CN 205885498 U CN205885498 U CN 205885498U CN 201620627944 U CN201620627944 U CN 201620627944U CN 205885498 U CN205885498 U CN 205885498U
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- China
- Prior art keywords
- clamping limb
- slide block
- driving means
- cutter head
- ultrasonic cutter
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Abstract
The utility model relates to an ultrasonic knife head with centre gripping arm driving device, it need continue to apply the technical problem that the grip leads to doctor's hand fatigue after having solved prior art handle closure, and it is equipped with centre gripping arm, centre gripping arm driving device, and centre gripping arm driving device includes handle, slider, ejector sleeve and return means, and on the handle was located to the cam, on the slider was located to the roller, the cam contacted with the roller, and the slider is connected with the ejector sleeve, and return means is connected with the slider, and the ejector sleeve is connected with the centre gripping arm. The utility model discloses can be used to in the surgery operation.
Description
Technical field
This utility model is related to a kind of medical apparatus and instruments and in particular to a kind of ultrasonic cutter head with clamping limb driving means.
Background technology
Due to the special performance of ultrasonic surgical instrument, this apparatus is increasingly widely applied in surgical operation.
Construction according to concrete apparatus and operation principle, ultrasonic surgical instrument can carry out blood coagulation while cutting tissue, its work
During do not have electric current to pass through human body, tissue eschar is little, thus the damage to patient is little.The ultrasonic instrument of this characteristic can be by
For open surgery, peritoneoscope or endo-surgical (including the operation of robot assisted).
As shown in figure 1, ultrasonic surgical instrument includes producing the generator 21 of electric excitation, electric excitation is converted into mechanical shock
And the transducer 13 amplifying and the ultrasonic cutter head 14 directly acting on operative site.Ac line voltage distribution is converted into by generator 21 can
The dc level of control.Then, the resonant frequency adjustment dc level after being connected with transducer 13 and ultrasonic cutter head 14.Signal after adjustment
Through filtering and being transferred to the transducer 13 being connected with generator 21, specifically it is transferred to the piezoelectric ceramics in transducer 13
22 two ends.Piezoelectric ceramics 22 has piezoelectric effect, and when piezoelectric ceramics 22 both end voltage changes, its volume will produce accordingly
Change.Press sinusoidal variations when generator 21 exports resonant frequency after electric excitation is connected with transducer 13 and ultrasonic cutter head 14
When, the axial length of piezoelectric ceramics 22 will produce sinusoidal variations by said frequencies, that is, the ultrasound wave required for producing.Transducer
13 other ends are connected with ultrasonic cutter head 14.
Ultrasonic surgical instrument includes the ultrasonic cutter head of 5mm curved scissors, and described curved scissors includes ultrasonic knife bar, clamping limb, tissue
Pad and clamping limb driving means, clamping limb can be operated by close handles, open towards knife bar surface and close, and tissue pad connects
To on clamping limb and wrap up clamping surface area, tissue between tissue pad and knife bar for the clamping limb produces clamp pressure.When
When close handles are in the close position, knife bar and tissue pad are close in clamping surface area, apply chucking power, and lead on blood vessel
The supersonic vibration crossing knife bar transmission makes vascularization engage, and the blood vessel of joint is crosscut and the end of blood vessel is condensed.
Publication No. cn104780855a Chinese invention patent open (the 218th in specific embodiments) discloses bending
Cutting clamping limb driving means is quadric chain, and close handles are drive rod, and in its closing course, pressure angle constantly increases, when closing
When conjunction handle is of completely closed, close to 90 degree, surgeon is applied to the power in close handles to pressure angle, and only very small part is used
In the closure controlling clamping limb.Meanwhile, after operation terminates, surgeon unclamps close handles, and close handles are in compression spring
Effect is lower to playback, and due to now quadric chain pressure angle, close to 90 degree, spring force only sub-fraction is used for overcoming closure handss
The frictional force of handle.Above-mentioned quadric chain, transmission process pressure angle changes always, and clamping limb stress is unstable, and playback can not
Lean on.
Content of the invention
This utility model is exactly to solve to need to continue to grip to lead to doctor's hand after existing apparatus handle closure
The technical problem of fatigue, has the ultrasonic cutter head with clamping limb driving means of auto-lock function after providing a kind of handle closure.
For this reason, this utility model provides a kind of ultrasonic cutter head with clamping limb driving means, it is provided with clamping limb, clamping
Arm driving means, clamping limb driving means include handle, slide block, ejector sleeve and returning device, cam on handle, roller located at
On slide block, cam and roller contact, slide block is connected with ejector sleeve, and returning device is connected with slide block, and ejector sleeve is connected with clamping limb.
Preferably, on handle, roller is on slide block for handle cam.
Preferably, it is additionally provided with stopper slot, slide block is in stopper slot.
Preferably, returning device is spring, and one end of spring is connected with slide block, and the other end of spring is fixed.
Preferably, slide block is additionally provided with empty avoiding space, in the movable space in empty avoiding of handle cam.
Preferably, it is additionally provided with stopping means.
Preferably, confined planes include front end confined planes and rear end confined planes.
This utility model is because using designing the cam structure with auto-lock function by simple harmonic motion, ultrasonic cutter head exists
Have an effect during close handles closure steadily, each part bears soft impulse, reliability strengthens；After closure, ultrasonic cutter head can be realized certainly
Lock function.Auto-lock function make surgeon solidifying close blood vessel and cutting compared with thick tissue when, need to not protect in ultrasound knife work process
Attachment means, can greatly reduce muscular tone and feeling of fatigue.
After operation terminates, surgeon unclamps close handles to device disclosed in this patent, and finger slightly promotes closure handss
After handle, cam mechanism can depart from self-locking region, and subsequent close handles can playback under compression spring effect, coagulates in curved scissors
Close blood vessel or cutting compared with during thick tissue, close handles are first closed by needs, handle drives clamping limb driving means to make ejector sleeve
Pull back, ejector sleeve drives clamping limb and cutting knife bar closure, under wavy spring effect, clamping limb produces the tissue folder of desired level
Holding force, when close handles are of completely closed, this power is more than 18 newton.
Brief description
Fig. 1 is ultrasound knife structural representation；
Fig. 2 is a kind of ultrasonic cutter head clamping device basic structure schematic diagram of this utility model 5mm curved scissors；
Fig. 3 is a kind of ultrasonic cutter head clamping device generalized section of this utility model 5mm curved scissors；
Fig. 4 is a kind of ultrasonic cutter head clamping device generalized section of this utility model 5mm curved scissors；
Fig. 5 is a kind of spacing schematic diagram of the ultrasonic cutter head clamping device of this utility model 5mm curved scissors.
In figure, 21, generator, 22, piezoelectric ceramics, 13, transducer, 14, ultrasonic cutter head, 1, handle, 2, slide block, 3, bullet
Spring, 4, shell, 5, sleeve pipe, 6, bearing pin, 7, clamping limb, 8, cutting knife bar, 9, ejector sleeve, 10, roller, 11, empty avoiding space, 12, ripple
Shape spring, 100, front end confined planes, 101, rear end confined planes.
Specific embodiment
With reference to example, this utility model is described further, but does not limit protection domain of the present utility model:
As shown in Fig. 2 this utility model provide the ultrasonic cutter head with clamping limb driving means, its be provided with clamping limb 7,
Clamping limb driving means, clamping limb driving means include handle 1, slide block 2, ejector sleeve 9, roller 10 and returning device, cam located at
On handle 1, roller 10 is connected with ejector sleeve 9 with slide block 2 hinge connection, slide block 2, and returning device is connected with slide block 2, ejector sleeve 9 and clamping limb 7
Connect.Clamping limb 7 lower end and ejector sleeve 9 hinge connection, upper end and sleeve pipe 5 hinge connection.Bearing pin 6 is additionally provided with clamping limb 7.
This utility model is additionally provided with stopper slot (not shown), and slide block 2 is in stopper slot.
Returning device is spring 3, and one end of spring 3 is connected with slide block 2, and the other end of spring 3 is fixed on shell 4.
As shown in figure 3, slide block 2 is additionally provided with empty avoiding space 11, cam movable in empty avoiding space 11.
As shown in Figure 4: slide block 2 and wavy spring 12 link, and wavy spring 12 is connected with ejector sleeve 9, ejector sleeve 9 and clamping limb 7
Become lever construction, when slide block 2 pulls wavy spring 12 rearward movement, ejector sleeve 9 pulls clamping limb 7 to close.When clamping limb 7 closes
Afterwards, ejector sleeve 9 pulls on wavy spring 12 rearward movement.Certain chucking power will be produced between clamping limb 7 and cutting knife bar 8.Tool
The requirement of body this chucking power is 18n.Reach 18n, slide block 2 rearward movement from clamping limb 7 open mode to chucking power
6.5mm.
In order that reaching auto-lock function after close handles closure, this utility model is convex to heart direct acting roller ejector sleeve using abnormity
Wheel mechanism.For reaching the purpose to the heart, close handles rotating shaft designs are to closure slide lower front end.
After close handles locating shaft is fixing, by dynamic analog calcutation obtain close handles in shell be rotated in angle
Spend for 20 ° ± 2 °.This angle is taken to be 20 °, that is, in the range of 20 °, half cam being configured in close handles will promote closure
Move apart from 6.5mm after slide, and reach region of far stopping.And by this angle-determining front end confined planes and rear end confined planes position.
Radius of cam base-circle is bigger, and in the case of identical corner, identical lift, drive line angle is bigger, and cam curve becomes
Change slower, the impact to mechanism is also less.Therefore in the range of ultrasonic cutter head shell, take big base radius as far as possible.Pass through
Simulation calculates, and determines that base radius is 26mm.
It is 26mm according to radius of cam base-circle, using simple harmonic motion, in 20 ° of corner, lift requires for 6.5mm,
Close handles construct cam, and according to space and structure mechanics analysis, intercepts this cam live part and form final bag
Close handles part containing half cam.
In the cam along slide block 2 direction of motion to heart position, on slide block 2, construction installs the support of roller 10, and designs
Roller 10 is installed on support.
Simulation close handles closure, calculates the closure slide block and close handles interference portion in motor process, and
Closure slide interference portion carries out empty avoiding design, is provided with empty avoiding space 11.
As shown in figure 5, this utility model is additionally provided with stopping means, including front end confined planes 100 and rear end confined planes 101.
During use, when handle 1 starts to close under surgical gripping, the cam of handle 1 rear structure will drive rolling
Son 10 rotation, roller 10 will slide backward in the Horizontal limiting groove being configured on left and right shell 4 with movable slider 2.Slide block 2 is backward
While slip, ejector sleeve 9 is driven to slide backward.Sleeve pipe 5 and cutting knife bar 8 do not produce shift in position with respect to ultrasonic cutter head, folder
Gripping arm 7 lower end and ejector sleeve 9 hinge connection, upper end and sleeve pipe 5 hinge connection.Ejector sleeve 9 rearward movement will drive clamping limb 7 around its upper end hinge point
Rotate thus closing with cutting knife bar 8, handle 1 moves to rear end confined planes 101 (referring to Fig. 5), you can make clamping limb 7 provide foot
Enough chucking power clamping tissues.
After the completion of cutting blood coagulation action, surgeon unclamps close handles, and finger somewhat before pushes away, and cam will leave self-locking
Position, afterwards spring 3 slide block 2 will be promoted to move forward along the Horizontal limiting groove that is configured on left and right shell 4.The elastic force of spring 3
More than the frictional force summation of ultrasonic cutter head each several part, move to front end confined planes (referring to figure such that it is able to smooth driving handle 1
3), so that clamping limb is automatically opened, prepare to cut blood coagulation action next time.
During handle 1 rearward movement, interfere for avoiding the cam being configured in close handles 1 rear portion to produce with slide block 2,
Special interference position construction empty avoiding space 11 in the middle of slide block 2.Make the cam being configured in handle 1 rear portion can move to cunning
The inside (referring to Fig. 3) of block 2.
Claims (7)
1. a kind of ultrasonic cutter head with clamping limb driving means, it is provided with clamping limb, clamping limb driving means, it is characterized in that institute
State clamping limb driving means and include handle, cam, slide block, ejector sleeve and returning device, described cam is located at described handle and described
On slide block, described slide block is connected with described ejector sleeve, and described returning device is connected with described slide block, described ejector sleeve and described clamping limb
Connect.
2. the ultrasonic cutter head with clamping limb driving means according to claim 1 is it is characterised in that described handle cam
On described handle, on the downside of described slide block, it is provided with roller.
3. the ultrasonic cutter head with clamping limb driving means according to claim 1 is it is characterised in that be additionally provided with stopper slot,
Described slide block is in described stopper slot.
4. the ultrasonic cutter head with clamping limb driving means according to claim 1 is it is characterised in that described returning device
For spring, one end of described spring is connected with described slide block, and the other end of described spring is fixed.
5. the ultrasonic cutter head with clamping limb driving means according to claim 1 is it is characterised in that described slide block also sets
Have empty avoiding space, described handle cam movable in described empty avoiding space.
6. the ultrasonic cutter head with clamping limb driving means according to claim 1 is it is characterised in that be additionally provided with spacing dress
Put.
7. the ultrasonic cutter head with clamping limb driving means according to claim 6 is it is characterised in that described stopping means
Including front end confined planes and rear end confined planes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620627944.6U CN205885498U (en) | 2016-06-23 | 2016-06-23 | Ultrasonic knife head with centre gripping arm driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620627944.6U CN205885498U (en) | 2016-06-23 | 2016-06-23 | Ultrasonic knife head with centre gripping arm driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205885498U true CN205885498U (en) | 2017-01-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620627944.6U Active CN205885498U (en) | 2016-06-23 | 2016-06-23 | Ultrasonic knife head with centre gripping arm driving device |
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| CN (1) | CN205885498U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105919652A (en) * | 2016-06-23 | 2016-09-07 | 山东威瑞外科医用制品有限公司 | Ultrasound knife with clamping arm driving unit |
-
2016
- 2016-06-23 CN CN201620627944.6U patent/CN205885498U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105919652A (en) * | 2016-06-23 | 2016-09-07 | 山东威瑞外科医用制品有限公司 | Ultrasound knife with clamping arm driving unit |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |