Jaw type Angiocarpy operation cannula propeller
Technical field
The present invention relates to a kind of cardiovascular operating instrument, a kind of jaw type Angiocarpy operation cannula propeller.
Background technology
In heart or Great Vessel Operations, it is often necessary to be inserted into surgical catheters at human body, these intubation fully rely on medical personnel hand-held intubate to operative incision insert.This manual work is higher to the requirement of operator, and the hand-held stability intubated and accuracy are difficult to grasp.Chinese patent 2012102651582 discloses one " Angiocarpy operation cannula fixation clamp ", utilizing this fixed mount can clamp the end intubated in operation process, in catheterization procedure, the operation of hand-held fixed mount can improve the Stability and veracity of intubation to a certain extent.But this fixation clamp can only play to fix and intubates and be easy to hand-held effect, cannot realize advancing the action intubated, still relying on operator in intubation and move the operation that arm realizes intubating, for unskilled doctor, it is extremely difficult for accurately, stably moving arm in operation process.
Summary of the invention
Present invention aim to address above-mentioned technical problem, it is provided that a kind of simple in construction, the jaw type Angiocarpy operation cannula propeller that easy to use, raising intubates operation Stability and veracity.
For solving above-mentioned technical problem, technical scheme is as follows: jaw type Angiocarpy operation cannula propeller of the present invention includes determining lever, dynamic lever, the described front end determining lever is fixedly connected with side plate, described side plate centrally through bearing, ratchet shaft is installed, between described ratchet shaft and side plate, return spring is installed, ratchet the tip of the axis connects dynamic lever, ratchet shaft is set with the ratchet cover plate, the ratchet mechanism of single direction rotation it is provided with between the described ratchet cover plate and ratchet shaft, determining to be provided with between lever and ratchet shaft tube seat, described tube seat is fixedly connected on to be determined on lever and is arranged at the tangent line of the ratchet cover plate, tube seat is provided with notch towards the tube wall of the ratchet cover plate, with the groove mated with the notch on tube seat on the excircle of the described ratchet cover plate.
Described tube seat is the groove being made up of multiple spill pulleys.
Being fixedly connected with discoid cover plate on ratchet shaft, between the ratchet cover plate and dynamic lever, described dynamic lever is fixedly connected on the outside of cover plate.
Being fixedly connected with discoid cover plate on ratchet shaft, between the ratchet cover plate and dynamic lever, the outside of described ratchet shaft is provided with installing hole, and described dynamic lever is inserted in the installing hole of ratchet shaft.
This propeller uses the ratchet cover plate to advance to intubate advance, it is to avoid the defect that manual operation brings, simple in construction, easy to use, and stability and the accuracy of operation increase substantially.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the planar structure schematic diagram of side plate.
Fig. 4 is the sectional view of another embodiment.
Fig. 5 is the structure for amplifying schematic diagram of ratchet shaft and the ratchet cover plate.
Detailed description of the invention
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, jaw type Angiocarpy operation cannula propeller of the present invention includes determining lever 1 and dynamic lever 2, the described front end determining lever 1 is fixedly connected with side plate 3, described side plate 3 centrally through bearing, ratchet shaft 4 is installed, between described ratchet shaft 4 and side plate 3, return spring 10 is installed.As it is shown on figure 3, this spring 10 can use torsion spring can also use extension spring, its effect is can be with self-return after ratchet shaft 4 turns over certain angle.The end of ratchet shaft 4 connects dynamic lever 2, is set with the ratchet cover plate 5, is provided with the ratchet mechanism of single direction rotation between the described ratchet cover plate 5 and ratchet shaft 4, can promote the ratchet cover plate 5 synchronous rotary when ratchet shaft 4 turns clockwise when on ratchet shaft 4;When ratchet shaft 4 rotates counterclockwise when, skidding between ratchet shaft 4 and the ratchet cover plate 5, the ratchet cover plate 5 will not rotate with.The concrete form of this ratchet mechanism can have multiple, as it is shown in figure 5, the inner periphery at the ratchet cover plate 5 is provided with ratchet, the excircle of corresponding ratchet shaft 4 is then provided with ratchet, this ratchet is hinged in the groove of ratchet shaft 4 excircle, and utilizes torsion spring to make it have the ability of return.When ratchet shaft 4 turns clockwise, the front end of ratchet is stuck in ratchet, promotes the ratchet cover plate 5 synchronous rotary;When ratchet shaft 4 rotates counterclockwise, ratchet is depressed by the inclined-plane of ratchet, and ratchet shaft 4 can rotate the most counterclockwise.It is of course also possible to ratchet is arranged on the inner peripheral surface of the ratchet cover plate 5, and ratchet is arranged on the excircle of ratchet shaft 4.
Determining to be provided with between lever 1 and ratchet shaft 4 tube seat 6, described tube seat 6 is fixedly connected at the tangent line determining on lever 1 and being arranged on the ratchet cover plate 5, tube seat 6 is provided with notch, with the groove mated with the notch on tube seat 6 on the excircle of the described ratchet cover plate 5 towards the tube wall of the ratchet cover plate 5.During use, intubating 9 and be inserted in tube seat 6, the ratchet cover plate 5 is pressed in by the notch on tube seat 6 and intubates on 9, when the ratchet cover plate 5 rotates when, utilizes frictional force promotion to intubate 9 and pushes forward.
Described tube seat 6 is the groove being made up of multiple spill pulleys 61.The side of multiple spill pulleys 61 arranged together forms the cannula passage of a groove-like, the most both can meet and intubate the requirement passed through, and can reduce again the frictional force intubating 9 and tube seat 6, makes the promotion of the ratchet cover plate 5 be easier to.
As in figure 2 it is shown, be fixedly connected with discoid cover plate 7 on ratchet shaft 4, between the ratchet cover plate 5 and dynamic lever 2, described dynamic lever 2 is fixedly connected on the outside of cover plate 7.The ratchet cover plate 5 is between cover plate 7 and side plate 3, plays a protective role ratchet mechanism, it is possible to avoids the ratchet cover plate 5 to press from both sides the when of rotation and causes to seize up into foreign body.
As it is shown on figure 3, be fixedly connected with discoid cover plate 7 on ratchet shaft, between ratchet 4 dish 5 and dynamic lever 2, the outside of described ratchet shaft 4 is provided with installing hole, and described dynamic lever 2 is inserted in the installing hole of ratchet shaft 4.Dynamic lever 2 uses dismountable mounting structure, it is simple to adjust the initial position of dynamic lever 2.
In operation, being inserted in tube seat 6 front end intubating 9, hold and determine lever 1 and dynamic lever 2, constantly pressing can promote and intubate 9 advances.