CN108635021A - Bull scalpel - Google Patents

Abstract

The invention discloses a multi-head scalpel, comprising a knife case, a knife handle, blades, a drive mechanism, a PLC controller and a battery; the knife case is detachably mounted on the knife handle, and there are multiple blades, each It is set in the cutter housing and is hinged with the driving mechanism through the connecting rod. The driving mechanism drives one of the blades to extend or retract the cutter housing. The PLC controller is connected to the driving mechanism to control the action of the driving mechanism. The battery is the driving mechanism and The PLC controller supplies power; the invention sets multiple blades, and the multiple blades are hinged to the drive mechanism through the connecting rod. According to actual needs, one of the blades can be controlled to protrude and use, so as to realize the free switching of multiple blades and avoid frequent Inconvenience caused by changing blades. The driving mechanism is controlled by a PLC controller, which is precise and easy to implement.

Description

multi head scalpel

technical field

The invention belongs to the technical field of cutting tools, and in particular relates to a multi-head scalpel.

Background technique

Medical scalpel is a tool that is often used in hospitals to perform operations on patients. The existing scalpel includes a blade and a handle. During use, the doctor holds the handle with his hand to perform the operation. During the operation, the commonly used scalpel needs to be replaced frequently, which wastes time for saving lives, and may be caused by During the operation, the knife slips and falls, which poses a threat to the health of the medical staff. In addition, when the doctor uses the scalpel, the handle of the scalpel is thin, which is not conducive to the doctor's grip.

Contents of the invention

In order to solve the above-mentioned problems in the prior art, the object of the present invention is to provide a multi-head scalpel that does not require frequent knife changes during use.

The technical scheme adopted in the present invention is:

A multi-headed scalpel includes a knife case, a knife handle, a blade, a drive mechanism, a PLC controller and a battery; the knife case is detachably mounted on the knife handle, and there are multiple blades, and the multiple blades are all arranged in the knife case, And the connecting rod is hinged with the driving mechanism, and the driving mechanism drives one of the blades to extend or retract the cutter housing. The PLC controller is connected with the driving mechanism to control the action of the driving mechanism, and the battery supplies power to the driving mechanism and the PLC controller.

Further, there are three blades.

Furthermore, the drive mechanism includes a motor, a first turntable, a second turntable, a third turntable and a drive rod; the output shaft of the motor is connected to the first turntable; the second turntable cooperates with the first turntable, and the first turntable The turntable is driven to rotate; the third turntable is rotatably fixed on the inner wall of the knife case, the side on the third turntable and opposite to the inner wall of the knife case is the first side, and the other side is the second side; the first side The blade is hinged on the second side of the third turntable through a connecting rod; one end of the driving rod is fixed on the second turntable, and the other end of the drive rod is provided with a tooth groove and a tooth groove matching the third turntable. gear teeth, and this end meshes with the third turntable.

Furthermore, the first turntable includes a chassis a, a groove and a through hole a; the groove is arranged on one side of the chassis a, and the through hole a is arranged at the center of the first turntable a.

Furthermore, there are three grooves, and the three grooves are centered on the center of the first turntable and radially distributed on the surface of the chassis a, and the angle between two adjacent grooves is 120 degrees.

Furthermore, the second turntable includes a chassis b, a boss b, a through hole b and an outer ring; the boss b is arranged on one side of the chassis b, and is formed by extending the chassis b in a direction perpendicular to its disk surface, and the boss b b matches the groove of the first turntable; the through hole b is set at the center of the chassis b; the outer ring is sleeved on the circumference of the chassis b, and balls are arranged between the chassis b and the outer ring.

Furthermore, the third turntable includes a rotating shaft, and the center of the third turntable is provided with a through hole c for the passing of the rotating shaft. One end of the rotating shaft is rotatably fixed on the inner wall of the cutter housing, and the other end passes through the through hole c, and is connected with the third turntable. The turntable is fixed.

Furthermore, the blade includes a blade portion and a fixing portion; the connecting rod includes a first connecting rod and a second connecting rod, one end of the first connecting rod is fixed on the second side of the third turntable, and the other end is connected to the second connecting rod. One end of the connecting rod is hinged, and the other end of the second connecting rod is hinged with the blade fixing part through a connecting piece.

Furthermore, the connecting piece includes a first connecting part, a second connecting part and a third connecting part, the first connecting part and the second connecting part are arranged in parallel, and the third connecting part is arranged between the first connecting part and the second connecting part Between, and fixed with the first connecting part and the second connecting part; the transverse dimension of the third connecting part is smaller than the transverse dimension of the first connecting part and the second connecting part; between the first connecting part and the second connecting part Between them, a mounting groove with the third connecting portion as the bottom of the groove is formed.

Furthermore, the connection end of the knife case is provided with an expansion joint extending toward its free end; the expansion joint divides the connection end of the knife case into an inner mounting portion and an outer engaging portion; the mounting portion is sheathed On the outer ring of the second turntable; at the end of the knife handle, there is a limiting part that prevents the engaging part from slipping out. The engaging part is located in the knife handle and is limited by the limiting part; There is a pressing device for pressing the engaging part.

The beneficial effects of the present invention are:

In the present invention, multiple blades are arranged, and multiple blades are hinged to the driving mechanism through connecting rods, so that one of the blades can be controlled to protrude and use according to actual needs, so as to realize the free switching of multiple blades, and avoid frequent replacement of blades. Inconvenience. The PLC controller is used to control the driving mechanism, and the control is precise and easy to realize.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a structural schematic diagram of the first turntable;

Fig. 3 is the structural schematic diagram of the second turntable;

Fig. 4 is a structural schematic diagram of the third turntable;

Fig. 5 is a schematic diagram of the blade structure;

Fig. 6 is a structural schematic diagram of a connector;

Fig. 7 is a structural schematic diagram of the driving rod;

Fig. 8 is a structural schematic diagram of the pressing device.

Among them, 1 is the knife shell, 11 is the expansion joint, 12 is the installation part, 13 is the engaging part, 14 is the pressing device, 2 is the knife handle, 3 is the blade, 31 is the blade part, 32 is the fixed part, 33 is the installation Hole, 4 is the PLC controller, 5 is the battery, 61 is the motor, 62 is the first turntable, 621 is the chassis a, 622 is the groove, 623 is the through hole a, 63 is the second turntable, 631 is the chassis b, 632 is the boss b, 633 is the through hole b, 634 is the outer ring, 64 is the third turntable, 641 is the rotating shaft, 65 is the driving rod, 7 is the connecting rod, 71 is the first connecting rod, 72 is the second connecting rod, 8 is a connecting piece, 81 is a first connecting part, 82 is a second connecting part, and 83 is a third connecting part.

Detailed ways

The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.

Referring to FIG. 1 : a multi-head scalpel, including a knife case 1 , a knife handle 2 , a blade 3 , a driving mechanism, a PLC controller 4 and a battery 5 . Knife housing 1 is detachably installed on handle 2, and there are multiple blades 3, and multiple blades 3 are all arranged in the knife housing 1, and are hinged with the driving mechanism through connecting rod 7, and one of the blades 3 is driven by the driving mechanism to extend. The cutter housing 1 is pulled out or retracted, and the PLC controller 4 is connected with the driving mechanism for controlling the action of the driving mechanism, and the battery 5 supplies power for the driving mechanism and the PLC controller 4 .

In a specific embodiment, there are three blades 3, and the shapes of the three blades 3 may be the same or different.

By arranging multiple blades 3, multiple blades 3 are hinged with the drive mechanism through the connecting rod 7, and one of the blades can be controlled to be stretched out according to actual needs, so as to realize free switching of multiple blades, avoiding frequent replacement of blades. Inconvenience caused. The PLC controller is used to control the driving mechanism, and the control is precise and easy to realize.

In one embodiment, the driving mechanism includes a motor 61 , a first turntable 62 , a second turntable 63 , a third turntable 64 and a drive rod 65 . The output shaft of the motor 61 is connected with the first turntable 62 to drive the first turntable 62 to rotate; the second turntable 63 cooperates with the first turntable 62 and is driven by the first turntable 62 to rotate. The third rotating disk 64 is rotatably fixed on the inner wall of the cutter housing 1, and on the third rotating disk 64, the side opposite to the inner wall of the cutter housing 2 is the first side, and the other side is the second side; the first side is provided with wheels Teeth and tooth grooves, the blade 3 is hinged on the second side of the third rotating disk 64 through the connecting rod 7; gear teeth, the other end of the drive rod 65 is engaged with the third rotating disk 64 . The output shaft of the motor 61 drives the first turntable 62 to rotate, thereby driving the second turntable 63 to rotate, and then the drive rod 65 drives the third turntable 64 to turn. During the rotation of the third turntable 64, the blade 3 is pulled by the connecting rod 7 and stretched out. Outside the knife case 1, or retract in the knife case 1.

Referring to FIG. 2 : specifically, the first turntable 62 includes a chassis a621 and a groove 622 , and the groove 622 is arranged on one side of the chassis a621 . There are three grooves 622. The three grooves 622 are centered on the center of the first turntable 62 and distributed radially on the surface of the chassis a621. The angle between two adjacent grooves 622 is 120 degrees. The center of the turntable 62 is provided with a through hole a623 matched with the output shaft of the motor 61 . The groove 622 can be directly provided on the chassis a621, or the boss a can be formed by extending the chassis a621 in a direction perpendicular to its surface, and the groove 622 can be arranged on the boss a.

Referring to FIG. 3 : the second turntable 63 includes a base plate b631 and a boss b632. The boss b632 is arranged on one side of the base plate b631 and is formed by extending the base plate b631 in a direction perpendicular to its plate surface. There are three bosses b632, and the three bosses b632 respectively correspond to the three grooves 622 of the first turntable, and the shape and size of the bosses b632 match the grooves on the grooves 622. In the center of the second turntable, there is a through hole b633 matched with the driving rod 65 . An outer ring 634 is sheathed on the circumference of the chassis b631 , and balls are arranged between the chassis b631 and the outer ring 634 .

Referring to Fig. 4 and Fig. 7: the center of the third turntable 64 is provided with a through hole c642 for the passage of the rotating shaft 641, one end of the rotating shaft 641 is rotatably fixed on the inner wall of the cutter housing 1, the other end passes through the through hole c642, and is connected with the third turntable 64 fixed.

The boss b632 of the second turntable 63 is embedded in the groove of the first turntable 62 , and the output shaft of the motor tightly fits into the through hole a621 to drive the first turntable 62 to rotate, thereby driving the second turntable 63 to rotate. One end of the polished rod of the drive rod 65 is inserted into the through hole b633 of the second turntable 63, and is driven to rotate by the second turntable 63; Turn, thereby driving the blade 3 to extend or retract.

Referring to FIG. 5 : in one embodiment, the blade 3 includes a cutting edge portion 31 and a fixing portion 32 . The connecting rod 7 includes a first connecting rod 71 and a second connecting rod 72, one end of the first connecting rod 71 is fixed on the second side of the third turntable 64, the other end is hinged with an end of the second connecting rod 72, and the second connecting rod 71 The other end of the rod 72 is hinged to the fixing portion 32 of the blade 3 . Specifically, a mounting hole 33 is opened on the fixing portion 32 , and a connecting piece 8 is disposed on the mounting hole 33 , and the other end of the second connecting rod 72 is hinged to the connecting piece 8 .

Referring to Fig. 6: the connector 8 includes a first connecting part 81, a second connecting part 82 and a third connecting part 83, the first connecting part 81 and the second connecting part 82 are arranged in parallel, and the third connecting part 83 is arranged on the first connecting part Between the part 81 and the second connecting part 82, and fixed with the first connecting part 81 and the second connecting part 82, the cross-sectional shape of the connecting part 8 is I-shaped. The lateral dimension of the third connecting portion 83 is smaller than the lateral dimensions of the first connecting portion 81 and the second connecting portion 82 . Between the first connecting portion 81 and the second connecting portion 82 , an installation groove with the third connecting portion 83 as the groove bottom is formed. The connecting piece 8 is arranged in the installation hole 33 of the blade 3 so that the edge of the installation hole 33 of the blade 3 is embedded in the installation groove of the connecting piece 8 .

In one embodiment, the transverse dimension of the first connecting portion 81 is smaller than the transverse dimension of the second connecting portion 82, the center of the first connecting portion 81 corresponds to the center of the second connecting portion 82, and the third connecting portion 83 is arranged eccentrically. between the first connecting portion 81 and the second connecting portion 82 .

Referring to FIG. 1 and FIG. 8 , one end of the knife case 1 is detachably connected with the knife handle 2 . In one embodiment, the end of the knife case 1 connected to the knife handle 2 is a connection end, and the connection end of the knife case 1 is provided with an expansion joint 11 extending toward its free end (ie, the other end of the knife case). The expansion joint 11 can be arranged along the circumferential direction of the connecting end of the cutter housing 1, or two expansion joints 11 can be arranged on the connecting end of the cutter housing 1, and the two expansion joints 11 are arranged symmetrically. The expansion joint 11 divides the connecting end of the knife housing 1 into an inner mounting portion 12 and an outer engaging portion 13 . The mounting portion 12 is sleeved on the outer ring of the second turntable 63 . At the end of the knife handle 2, a limiting part is provided to prevent the engaging part from slipping out. The engaging part is located in the knife handle 2 and is limited by the limiting part. A pressing device 14 for pressing the engaging part 13 is provided on the handle 2. The pressing device includes a pressing piece and a spring. The hole penetrates into the knife handle 2 and is in contact with the engaging portion 13. A return spring is provided in the pressing piece. One end of the returning spring is against the top of the pressing piece, and the other end is against the outer wall of the knife handle.

When the knife case needs to be disassembled, only the pressing part needs to be pressed to close the expansion joint, and the lateral dimension of the connection end of the knife case is reduced, so that the knife case can be disengaged from the knife handle, and the knife case and the blade in the knife case can be replaced conveniently. The mounting part 12 is sleeved on the outer ring of the second rotating disk 63. Since balls are arranged between the chassis of the second rotating disk and the outer ring, when the chassis of the second rotating disk rotates, the outer ring can remain still, which is convenient for installing the knife. shell.

In one embodiment, a blade shift switch can also be provided on the handle, and the extension or retraction of the blade can be controlled by the shift switch. The gear switch adapts to the number of blades. For example, a gear slot is provided on the handle 2, and there are three gear switches, which are respectively used to control three blades, and the gear switches are installed in the gear slots.

The PLC control part can control the conventional settings. For example, when the gear position 1 is pressed, the drive motor rotates to make the first turntable rotate 120 degrees, and the first blade hinged on the third turntable through the connecting rod is stretched out; when the gear position 2 is pressed, The drive motor rotates another 120 degrees, the first blade hinged on the third turntable through the connecting rod retracts, and the second blade extends out at the same time; press the third gear, the drive motor rotates 120 degrees again, and the third blade is hinged on the third turntable through the connecting rod. The second blade on the turntable retracts while the third blade extends.

The present invention is not limited to the above optional embodiments, and anyone can obtain other various forms of products under the enlightenment of the present invention. The above specific implementation methods should not be construed as limiting the protection scope of the present invention. The protection scope of the present invention should be defined in the claims, and the description can be used to interpret the claims.

Claims (10)

1. multi-head scalpel, it is characterized in that, comprises knife shell, handle of a knife, blade, driving mechanism, PLC controller and battery; Described knife shell is detachably installed on the handle of a knife, and blade is a plurality of, and a plurality of blades all It is set in the knife case and hinged with the drive mechanism through the connecting rod. The drive mechanism drives one of the blades to extend or retract the knife case. The PLC controller is connected to the drive mechanism to control the action of the drive mechanism. The battery is the drive mechanism and PLC controller power supply. 2. The multi-head scalpel according to claim 1, wherein there are three blades. 3. The multi-head scalpel according to claim 2, wherein the drive mechanism comprises a motor, a first turntable, a second turntable, a third turntable and a drive rod; the output shaft of the motor is connected with the first turntable The second turntable cooperates with the first turntable and is driven to rotate by the first turntable; the third turntable is rotatably fixed on the inner wall of the knife case, and the side on the third turntable and opposite to the inner wall of the knife case is the first The other side is the second side; the first side is provided with gear teeth and tooth grooves, and the blade is hinged on the second side of the third turntable through a connecting rod; one end of the drive rod is fixed on the second turntable, and the drive The other end of the rod is provided with tooth grooves and gear teeth matched with the third turntable, and this end meshes with the third turntable. 4. The multi-head scalpel according to claim 3, wherein the first rotating disk comprises a chassis a, a groove and a through hole a; the groove is arranged on one side of the chassis a, and the through hole a Set in the center of the first turntable a. 5. The multi-head scalpel according to claim 4, characterized in that, there are three grooves, the three grooves are centered on the center of the first turntable, distributed radially on the surface of the chassis a, two adjacent The angle between the grooves is 120 degrees. 6. The multi-head scalpel according to claim 4 or 5, wherein the second turntable comprises a chassis b, a boss b, a through hole b and an outer ring; the boss b is arranged on one side of the chassis b The side is formed by the extension of the chassis b to the direction perpendicular to its disk surface, and the boss b matches the groove of the first turntable; the through hole b is set at the center of the chassis b; the outer ring is sleeved on the circumference of the chassis b, Balls are provided between the chassis b and the outer ring. 7. The multi-head scalpel according to claim 6, wherein the third rotating disk includes a rotating shaft, the center of the third rotating disk is provided with a through hole c for the rotating shaft to pass through, and one end of the rotating shaft is rotatably fixed on the knife case The other end of the inner wall passes through the through hole c and is fixed with the third turntable. 8. The multi-head scalpel according to claim 2, wherein the blade comprises a blade portion and a fixed portion; the connecting rod comprises a first connecting rod and a second connecting rod, and one end of the first connecting rod is fixed on On the second side of the third turntable, the other end is hinged to one end of the second connecting rod, and the other end of the second connecting rod is hinged to the blade fixing part through a connecting piece. 9. The multi-head scalpel according to claim 8, characterized in that, the connecting member comprises a first connecting part, a second connecting part and a third connecting part, the first connecting part and the second connecting part are arranged in parallel, and the second connecting part The three connecting parts are arranged between the first connecting part and the second connecting part, and are fixed with the first connecting part and the second connecting part; the transverse dimension of the third connecting part is smaller than that of the first connecting part and the second connecting part Horizontal dimension: between the first connecting part and the second connecting part, an installation groove with the third connecting part as the bottom of the groove is formed. 10. The multi-head scalpel according to claim 2, characterized in that, the connection end of the knife case is provided with an expansion joint extending to its free end; the expansion joint divides the connection end of the knife case into inner mounting part and the outer engaging part; the mounting part is sleeved on the outer ring of the second turntable; a limit part is provided at the end of the handle to prevent the engaging part from slipping out, and the engaging part is located in the handle, And the position is limited by the limiting part; the handle is provided with a pressing device for pressing the engaging part.