CN210784530U - Safety sternum saw - Google Patents
Safety sternum saw Download PDFInfo
- Publication number
- CN210784530U CN210784530U CN201921432642.3U CN201921432642U CN210784530U CN 210784530 U CN210784530 U CN 210784530U CN 201921432642 U CN201921432642 U CN 201921432642U CN 210784530 U CN210784530 U CN 210784530U
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- saw
- piece
- cutter holder
- baffle piece
- outer baffle
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Abstract
The safe sternum saw comprises a machine body and a gun handle, wherein a saw cutter holder is arranged at the left end of the machine body, a saw cutter is arranged on the saw cutter holder, an installation cavity is arranged on the saw cutter holder, two installation ports are arranged on the saw cutter holder, the two installation ports are communicated with the installation cavity, a limiting protection mechanism is arranged on the saw cutter holder, and the limiting protection mechanism comprises an inner baffle piece, an outer baffle piece and a driving assembly; to sum up, the utility model discloses a setting up interior baffle spare and outer baffle spare, can injecing the position that the saw sword presss from both sides to be located the thorax, prevent because of the maloperation, the saw sword presss from both sides and is proposed the thorax, perhaps inserts the interior damage tissue of thorax, overall structure reasonable in design has guaranteed the security that the sternum saw used.
Description
Technical Field
The utility model belongs to the technical field of the medical treatment, concretely relates to safe type sternum saw.
Background
Open chest treatments, such as heart valve replacement, mediastinal mass removal, etc., are often required in the surgical treatment of cardiothoracic diseases. In open chest procedures, a sternal saw is used to split the sternum and provide access to the chest cavity for the surgical procedure. The diaphragm is located under the sternum, and the heart and the great vessels connected with the heart are the important human organs, and the sternum saw is very sharp when the sternum is sawn, so how to ensure the effect of sawing the sternum without damaging the tissues below the sternum has important significance. In the existing sternum saw, such as the sternum saw disclosed in CN201510090672, the front end of the saw blade holder 4 is in a straight hook shape, which mainly plays a role in protection, when in use, an operator needs to lift the sternum saw forward, hook the front undivided sternum by using the straight hook structure at the front end of the saw blade holder 4, so as to prevent the sternum saw from damaging the tissues below the sternum saw, but the continuous upward lifting of the saw is inconvenient for the surgical operation and easy to cause arm fatigue, and meanwhile, the descending position of the saw due to unexpected factors such as arm shaking and the like can cause dangerous situations of heart or great vessel damage, and in addition, the continuous upward lifting of the saw sometimes causes the saw to be lifted out of the thoracic cavity due to slipping, so that the saw is not hooked with the front undivided sternum, and at this time, the saw needs to be.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the weak point among the prior art, provide a can prevent that the sternum saw from accidentally injuring tissue organ, guaranteeing job stabilization's safe type sternum saw.
In order to solve the technical problem, the utility model adopts the following technical scheme: the safety sternum saw comprises a machine body and a gun handle, wherein a saw cutter holder is arranged at the left end of the machine body, a saw cutter is arranged on the saw cutter holder, an installation cavity is arranged on the saw cutter holder, two installation ports are formed in the saw cutter holder and are communicated with the installation cavity, a limiting protection mechanism is arranged on the saw cutter holder and comprises an inner baffle piece, an outer baffle piece and a driving assembly, the inner baffle piece and the outer baffle piece are respectively arranged at the two installation ports and have the same structure, and the inner baffle piece is positioned on the left side of the outer baffle piece;
the inner baffle piece comprises two gears which are meshed with each other, the two gears are respectively and rotatably connected to the mounting opening through a rotating shaft, the gears are fixedly connected with the rotating shaft, the rotating shaft is rotatably connected to the mounting opening through a bearing, and limiting wing plates are fixed on the two gears; the driving assembly comprises a driving motor and two synchronous wheels, the two synchronous wheels are respectively fixed on rotating shafts of the inner baffle plate piece and the outer baffle plate piece, the two synchronous wheels are in transmission connection through a synchronous belt, and the synchronous belt penetrates through the installation cavity;
the driving motor is fixed on the machine body and is in transmission connection with one of the rotating shafts of the outer baffle piece, and the gun handle is provided with a control switch for controlling the driving motor.
Adopt above-mentioned technical scheme, the utility model discloses following beneficial effect has: the utility model discloses be provided with interior baffle spare and outer baffle spare on the saw cutter holder, and the two structure is the same, when using, stretches into the chest with the saw cutter holder, through opening and being closed of two spacing pterygoid laminas of baffle spare and outer baffle spare in the driving motor drive, concrete theory of operation is: the driving motor drives one of the rotating shafts of the outer baffle piece to rotate, and the two groups of gears of the outer baffle piece are in meshed transmission, so that the limiting wing plates on the two gears move in opposite directions until the limiting wing plates rotate by 90 degrees, and in addition, the synchronous wheels rotate to drive the synchronous wheels of the inner baffle piece to rotate through the synchronous belts, so that the two gears of the inner baffle piece rotate, and the two groups of limiting wing plates reversely rotate by 90 degrees; the thoracotomy can be performed after the limiting wing plate is opened; due to the action of the limiting wing plates of the inner baffle piece and the outer baffle piece, the saw blade holder can be prevented from being lifted out of the chest cavity due to misoperation or extending into the cavity to damage tissues.
To sum up, the utility model discloses a setting up interior baffle spare and outer baffle spare, can injecing the position that the saw sword presss from both sides to be located the thorax, prevent because of the maloperation, the saw sword presss from both sides and is proposed the thorax, perhaps inserts the interior damage tissue of thorax, overall structure reasonable in design has guaranteed the security that the sternum saw used.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic view of the connection of the inner barrier member and the outer barrier member.
Detailed Description
As shown in fig. 1 and 2, the utility model discloses a safe type sternum saw, including fuselage 1 and gun handle 2, the left end of fuselage 1 is provided with saw cutter holder 3, be provided with saw sword 4 on the saw cutter holder 3, be equipped with the installation cavity on the saw cutter holder 3, be equipped with two installing ports 5 on the saw cutter holder 3, two installing ports 5 all communicate with the installation cavity, be provided with spacing protection mechanism on the saw cutter holder 3, spacing protection mechanism includes inner baffle 6, outer baffle 7 and drive assembly, inner baffle 6 and outer baffle 7 set up in two installing ports 5 respectively and the structure of the two is the same, inner baffle 6 is located the left side of outer baffle 7;
the inner baffle piece 6 comprises two gears 8 which are meshed with each other, the two gears 8 are respectively and rotatably connected to the mounting opening 5 through a rotating shaft 9, the gears 8 and the rotating shaft 9 are fixedly connected, the rotating shaft 9 is rotatably connected to the mounting opening 5 through a bearing, and limiting wing plates 10 are fixed on the two gears 8; the driving assembly comprises a driving motor 11 and two synchronous wheels 12, the two synchronous wheels 12 are respectively fixed on the rotating shafts 9 of the inner baffle plate 6 and the outer baffle plate 7, the two synchronous wheels 12 are in transmission connection through a synchronous belt 13, and the synchronous belt 13 penetrates through the installation cavity;
the driving motor 11 is fixed on the machine body 1, the driving motor 11 is in transmission connection with one of the rotating shafts 9 of the outer baffle plate 7, and the gun handle 2 is provided with a control switch 14 for controlling the driving motor 11.
The utility model discloses be provided with interior baffle 6 and outer baffle 7 on saw cutter holder 3, and the two structure is the same, when using, stretches into the thorax with saw cutter holder 3, through opening and the closure of two spacing pterygoid laminas 10 of baffle 6 and outer baffle 7 in the driving motor 11 drive, concrete theory of operation is: a driving motor 11 drives one rotating shaft 9 of the outer baffle piece 7 to rotate, and two groups of gears 8 of the outer baffle piece 7 are in meshed transmission, so that the limiting wing plates 10 on the two gears 8 move in opposite directions until the limiting wing plates 10 rotate 90 degrees, in addition, the synchronous wheels 12 rotate and drive the synchronous wheels 12 of the inner baffle piece 6 to rotate through the synchronous belts 13, so that the two gears 8 of the inner baffle piece 6 rotate, and the two groups of limiting wing plates 10 rotate for 90 degrees oppositely; the thoracotomy operation can be carried out after the limiting wing plates 10 are opened, after thoracotomy, the driving motor rotates again, and the two limiting wing plates 10 are rotatably accommodated in the mounting hole; due to the action of the limiting wing plates 10 of the inner baffle piece 6 and the outer baffle piece 7, the saw holder 3 can be prevented from lifting out of the chest cavity due to misoperation or extending into the cavity to damage tissues.
The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any form, and all of the technical matters of the present invention belong to the protection scope of the present invention to any simple modification, equivalent change and modification made by the above embodiments.
Claims (1)
1. Safe type sternum saw, including fuselage and gun handle, the fuselage left end is provided with the saw cutter holder, is provided with saw sword, its characterized in that on the saw cutter holder: the saw knife clamp is provided with an installation cavity, the saw knife clamp is provided with two installation ports, the two installation ports are communicated with the installation cavity, the saw knife clamp is provided with a limiting protection mechanism, the limiting protection mechanism comprises an inner baffle piece, an outer baffle piece and a driving assembly, the inner baffle piece and the outer baffle piece are respectively arranged at the two installation ports and have the same structure, and the inner baffle piece is positioned on the left side of the outer baffle piece;
the inner baffle piece comprises two gears which are meshed with each other, the two gears are respectively and rotatably connected to the mounting opening through a rotating shaft, the gears are fixedly connected with the rotating shaft, the rotating shaft is rotatably connected to the mounting opening through a bearing, and limiting wing plates are fixed on the two gears; the driving assembly comprises a driving motor and two synchronous wheels, the two synchronous wheels are respectively fixed on rotating shafts of the inner baffle plate piece and the outer baffle plate piece, the two synchronous wheels are in transmission connection through a synchronous belt, and the synchronous belt penetrates through the installation cavity;
the driving motor is fixed on the machine body and is in transmission connection with one of the rotating shafts of the outer baffle piece, and the gun handle is provided with a control switch for controlling the driving motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921432642.3U CN210784530U (en) | 2019-08-30 | 2019-08-30 | Safety sternum saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921432642.3U CN210784530U (en) | 2019-08-30 | 2019-08-30 | Safety sternum saw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210784530U true CN210784530U (en) | 2020-06-19 |
Family
ID=71234588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921432642.3U Active CN210784530U (en) | 2019-08-30 | 2019-08-30 | Safety sternum saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210784530U (en) |
-
2019
- 2019-08-30 CN CN201921432642.3U patent/CN210784530U/en active Active
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