Medical reshaping reciprocating sawing and bending machine

Abstract

The invention discloses a medical reshaping reciprocating sawing and bending machine, and relates to the technical field of medical reshaping instruments. The medical reshaping reciprocating sawing and bending machine comprises a blade body and a handle body with a certain bending radian, wherein the blade body comprises a blade part and a handle part which are connected with each other; the first end of the handle body is connected with the mounting sleeve, and the second end of the handle body is used for being connected with an external rotation driving device; the transmission structure is mounted in the handle body, so that the rotary driving device can drive the cutter mounting assembly to do linear reciprocating motion relative to the mounting sleeve along the axis of the mounting sleeve through the transmission structure; further, the blade body mounted on the cutter mounting assembly does linear reciprocating motion along the axis of the blade body; according to the technical scheme provided by the invention, the situation that the reciprocating saw is stuck during operation can be reduced, so that the stability of an operation process is improved, and medical negligence is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of medical plastic surgery instruments, and in particular to a medical plastic surgery reciprocating saw bending machine. Background Art

[0002] Medical plastic surgery reciprocating saw bending machine refers to a general term for medical plastic surgery mobile phones equipped with a reciprocating saw and whose handle body has a certain curvature; in medical plastic surgery, the medical plastic surgery reciprocating saw bending machine drives the blade body to make a linear reciprocating motion along its own axis to perform a sawing and shaping operation on human bone tissue. In the prior art, the internal transmission structure of the medical plastic surgery reciprocating saw bending machine is complex, which makes the reciprocating saw easily stuck and unable to move during operation, affecting the stability of the operation process, and in severe cases may also cause medical accidents.

[0003] It should be noted that the above contents are only used to assist in understanding the technical solution of the present invention, and do not constitute an admission that the above contents are prior art. Summary of the invention

[0004] The main purpose of the present invention is to provide a medical plastic surgery reciprocating saw bender, which aims to reduce the occurrence of the reciprocating saw getting stuck during operation, thereby improving the stability of the surgical process and avoiding the occurrence of medical accidents.

[0005] To achieve the above-mentioned purpose, the present invention provides a medical plastic surgery reciprocating saw bending machine; Specifically, the medical plastic surgery reciprocating saw bending machine comprises: A blade body, the blade body comprising a blade portion and a handle portion connected to each other; A mounting sleeve, wherein a tool mounting assembly is slidably connected inside the mounting sleeve, and the tool mounting assembly is fixedly connected to the tool handle; A handle body having a certain curvature, wherein a first end of the handle body is connected to the mounting sleeve, and a second end of the handle body is used to connect to an external rotation drive device; a transmission structure, the transmission structure being installed inside the handle body, so that the rotary drive device can drive the tool mounting assembly to make linear reciprocating motion along the axis of the mounting sleeve relative to the mounting sleeve through the transmission structure, thereby making the blade body mounted on the tool mounting assembly make linear reciprocating motion along its own axis; Specifically, the transmission structure includes an eccentric wheel component, the central axis and the rotation axis of the eccentric wheel component are located on non-colinear lines; the eccentric wheel component is arranged in a driving groove of the tool mounting assembly, and the driving groove is provided with a movable space for the eccentric wheel component to perform eccentric rotational motion; the eccentric wheel component can perform eccentric rotational motion under the drive of the rotation drive device, and during the eccentric rotational motion of the eccentric wheel component, at least part of its outer side surface remains in contact and connected with the inner wall of the driving groove.

[0006] In one embodiment, the handle body comprises a first handle segment and a second handle segment connected to each other, wherein the first handle segment and the second handle segment are arranged at an angle, and an end of the first handle segment away from the second handle segment is fixedly connected to the mounting sleeve; The transmission structure includes a first rotating shaft and a second rotating shaft; The first rotating shaft is rotatably connected to the first handle section, the first end of the first rotating shaft is connected to the eccentric wheel component, and the second end of the first rotating shaft is connected to the first gear component; The second rotating shaft is rotatably connected to the second handle section; the first end of the second rotating shaft is connected to the second gear member, and the second end of the second rotating shaft is used to connect to the rotating drive device; wherein the first gear member and the second gear member are meshed for transmission and are set at an angle to each other.

[0007] In one embodiment, the transmission structure further comprises a speed regulating assembly, which is disposed between the second end of the second rotating shaft and the rotation driving device; the speed regulating assembly is used to regulate the rotation rate of the second rotating shaft acted by the rotation driving device; Specifically, the speed regulation assembly includes a third rotating shaft, a sun gear, at least three planetary gears and a planetary carrier; the first end of the third rotating shaft is connected to the sun gear, and the second end of the third rotating shaft is used to connect to the rotation drive device; at least three planetary gears are arranged around the outer periphery of the sun gear, and at least three planetary gears are meshed with the sun gear for transmission; the first side of the planetary carrier is rotatably connected and installed with at least three planetary gears, and the second side of the planetary carrier is fixedly connected to the second end of the second rotating shaft.

[0008] In one embodiment, the transmission mechanism further comprises a connecting assembly, which is disposed between the speed regulating assembly and the rotary drive device; the connecting assembly is used to connect the speed regulating assembly and the driving end of the rotary drive device to each other; Specifically, the connecting assembly includes a connecting sleeve coaxially arranged with the third rotating shaft, the first end of the connecting sleeve is slidably sleeved on the second end of the third rotating shaft, and the second end of the connecting sleeve is used to connect the rotation drive device; a fixing ring is sleeved on the middle part of the third rotating shaft, and a first spring is sleeved on the third rotating shaft, and the two ends of the first spring are respectively abutted against the first end of the connecting sleeve and the fixing ring.

[0009] In one embodiment, a limiting groove is opened at the first end of the connecting sleeve, and the groove direction of the limiting groove is arranged along the axial direction of the third rotating shaft; a limiting pin is installed at the second end of the third rotating shaft, and the end of the limiting pin is slidably connected to the limiting groove.

[0010] In one embodiment, the tool mounting assembly includes an axial core sleeve and an axial core tube which are sequentially sleeved and connected from the outside to the inside; The shaft core sleeve can be slidably connected with the installation sleeve along the axis of the shaft core tube; the driving groove is arranged on the outer side of the shaft core sleeve; The shaft core tube is fixedly connected to the shaft core sleeve, and a mounting channel extending along the axis of the shaft core tube is provided inside the shaft core tube, and the tool handle portion of the cylindrical structure can be inserted into the shaft core tube along the mounting channel, and the inner side wall of the mounting channel and the outer side surface of the tool handle portion are fitted to each other to limit the radial movement of the tool handle portion; Among them, a limit piece is provided at the end of the shank portion away from the blade portion, and a notch portion is provided at the connection between the limit piece and the shank portion; the tool mounting assembly also includes a first positioning block and a second positioning block; the first positioning block is fixedly arranged in the mounting channel, and the first positioning block is used to be embedded in the notch portion to limit the axial movement of the shank portion; the second positioning block is slidably connected to the mounting channel, and the second positioning block is used to abut the side of the limit piece to limit the circumferential movement of the shank portion.

[0011] In one embodiment, an inner recess is provided on the inner side of the mounting sleeve, and a guide groove is provided on the outer side of the shaft core sleeve, wherein the groove direction of the guide groove is arranged along the axial direction of the shaft core tube; the tool mounting assembly includes a guide member, at least a portion of the guide member is embedded in and connected to the inner recess, and at least a portion of the guide member is slidably connected to the guide groove; and the guide member is in a spherical structure, and the guide member is rotatably connected to the inner recess.

[0012] In one embodiment, a connecting channel is provided between the first positioning block and the mounting channel, the channel cross-sectional area of ​​the connecting channel is larger than the cross-sectional area of ​​the limiting member, and the channel cross-sectional area of ​​the connecting channel is smaller than the cross-sectional area of ​​the handle portion; In one embodiment, the projection area of ​​the second positioning block along the axial direction of the shaft core tube is defined as a first projection area, and the projection area of ​​the connecting channel along the axial direction of the shaft core tube is defined as a second projection area, and at least part of the first projection area overlaps with the second projection area.

[0013] In one embodiment, the tool mounting assembly also includes a movable sleeve, which is slidably arranged between the shaft core sleeve and the shaft core tube; the movable sleeve includes a coaxially arranged push sleeve ring and a connecting ring, a second spring is sleeved on the connecting ring, a protrusion is provided on the inner side of the shaft core sleeve, and the two ends of the second spring are respectively abutted against the protrusion and the push sleeve ring; a sliding channel is provided between the shaft core sleeve and the shaft core tube and is axially arranged along the shaft core tube, a connecting piece is slidably arranged in the sliding channel, and the connecting ring is fixedly connected to the second positioning block through the connecting piece.

[0014] In one embodiment, at least a portion of the push collar is exposed outside the shaft core sleeve; In one embodiment, the exposed area of ​​the push collar is provided with anti-slip textures.

[0015] The technical solution of the present invention drives the tool mounting assembly to make linear reciprocating motion relative to the mounting sleeve along the axis of the mounting sleeve by setting a transmission structure; since the handle portion of the blade body is fixedly connected to the tool mounting assembly, the blade body can make linear reciprocating motion along its own axis, so that the blade portion can be used to saw off and reshape human bone tissue.

[0016] The transmission structure includes an eccentric wheel, and the central axis and the rotation axis of the eccentric wheel are located on non-colinear lines; when the rotary drive device drives the eccentric wheel to perform eccentric rotation, at least part of the outer side surface of the eccentric wheel is in contact with the inner wall of the driving groove of the tool mounting assembly, and the tool mounting assembly is slidably connected to the inside of the mounting sleeve along the axis of the mounting sleeve, so that the tool mounting assembly can only perform linear reciprocating motion along the axis of the mounting sleeve under the dual restrictions of the eccentric wheel and the mounting sleeve, thereby achieving the purpose of driving the blade body to perform linear reciprocating motion along its own axis. In addition, in the above transmission structure, since the driving groove is provided with an activity space for the eccentric wheel to perform eccentric rotation, the activity space can also be used as an adjustment space for the relative position adjustment of the eccentric wheel and the driving groove, so that the transmission structure can be adjusted in a small range to reduce the occurrence of the reciprocating saw being stuck during operation; thereby improving the stability of the surgical process and avoiding the occurrence of medical accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic diagram of the overall structure of an embodiment of a medical plastic surgery reciprocating saw bender provided by the present invention; Figure 2 A schematic diagram of the internal structure of an embodiment of a medical plastic surgery reciprocating saw bender provided by the present invention; Figure 3 for Figure 2 A partial enlarged view of the middle A; Figure 4 for Figure 2 A partial enlarged view of point B in the middle; Figure 5 A schematic diagram of the exploded structure of a connecting assembly in an embodiment of a medical plastic surgery reciprocating saw bender provided by the present invention; Figure 6 A schematic diagram of the exploded structure of a tool mounting assembly in an embodiment of a medical plastic surgery reciprocating saw bender provided by the present invention; Figure 7 A schematic diagram of the internal structure of a tool mounting assembly in an embodiment of a medical plastic surgery reciprocating saw bender provided by the present invention; Figure 8 A schematic diagram of the installation steps of the blade body in one embodiment of the medical plastic surgery reciprocating saw bender provided by the present invention; Fig. 9 The second schematic diagram of the installation steps of the blade body in one embodiment of the medical plastic surgery reciprocating saw bender provided by the present invention; Fig.10 A third schematic diagram of the steps for installing the blade body of an embodiment of the medical plastic surgery reciprocating saw bender provided by the present invention; Fig.11 The fourth schematic diagram of the installation steps of the blade body in one embodiment of the medical plastic surgery reciprocating saw bender provided by the present invention.

[0019] Description of reference numerals: 100, blade body; 110, blade portion; 120, handle portion; 130, stopper; 140, notch portion; 200, mounting sleeve; 210, recessed portion; 300, tool mounting assembly; 310, shaft sleeve; 311, drive groove; 312, guide groove; 313, raised portion; 320, shaft tube; 321, mounting channel; 322, connecting channel; 330, first positioning block; 340, second positioning block; 350, guide member; 360, movable sleeve; 361, push sleeve ring; 362, connecting ring; 363, second spring; 364, connecting Connector; 365, sliding channel; 400, handle body; 410, first handle section; 420, second handle section; 500, transmission structure; 510, eccentric wheel; 520, first rotating shaft; 521, first gear member; 530, second rotating shaft; 531, second gear member; 540, speed regulating assembly; 541, third rotating shaft; 542, sun gear; 543, planetary gear; 544, planet carrier; 550, connecting assembly; 551, connecting sleeve; 552, fixing ring; 553, first spring; 554, limiting groove; 555, limiting pin; The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0020] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solution in the present invention. Obviously, what is described is only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0022] In addition, it should be noted that the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0023] Medical plastic surgery reciprocating saw bending machine refers to a general term for medical plastic surgery mobile phones equipped with a reciprocating saw and whose handle body has a certain curvature; in medical plastic surgery, the medical plastic surgery reciprocating saw bending machine drives the blade body to make a linear reciprocating motion along its own axis to perform a sawing and shaping operation on human bone tissue. In the prior art, the internal transmission structure of the medical plastic surgery reciprocating saw bending machine is complex, which makes the reciprocating saw easily stuck and unable to move during operation, affecting the stability of the operation process, and in severe cases may also cause medical accidents.

[0024] In order to solve the above technical problems, the present invention proposes a medical plastic surgery reciprocating saw bending machine.

[0025] See also Figure 1-3 In one embodiment of the present invention, the medical plastic surgery reciprocating saw bending machine comprises: The blade body 100 includes a blade portion 110 and a handle portion 120 connected to each other; An installation sleeve 200, wherein a tool installation assembly 300 is slidably connected inside the installation sleeve 200, and the tool installation assembly 300 is fixedly connected to the tool handle 120; A handle body 400 having a certain curvature, a first end of the handle body 400 being connected to the mounting sleeve 200, and a second end of the handle body 400 being used to connect to an external rotation driving device (not shown in the drawings); The transmission structure 500 is installed inside the handle body 400, so that the rotary drive device can drive the tool mounting assembly 300 to make a linear reciprocating motion along the axis of the mounting sleeve 200 relative to the mounting sleeve 200 through the transmission structure 500, thereby making the blade body 100 installed on the tool mounting assembly 300 make a linear reciprocating motion along its own axis; Specifically, the transmission structure 500 includes an eccentric wheel component 510, and the central axis and the rotation axis of the eccentric wheel component 510 are located on non-colinear lines; the eccentric wheel component 510 is arranged in a driving groove 311 of the tool mounting assembly 300, and the driving groove 311 is provided with a movable space for the eccentric wheel component 510 to perform eccentric rotational motion; the eccentric wheel component 510 can perform eccentric rotational motion under the drive of a rotation driving device, and during the eccentric rotational motion of the eccentric wheel component 510, at least part of its outer side surface remains in contact and connected with the inner wall of the driving groove 311.

[0026] The technical solution of the present invention drives the tool mounting assembly 300 to make linear reciprocating motion relative to the mounting sleeve 200 along the axis of the mounting sleeve 200 by setting a transmission structure 500; since the handle portion 120 of the blade body 100 is fixedly connected to the tool mounting assembly 300, the blade body 100 can make linear reciprocating motion along its own axis, so that the blade portion 110 can be used to saw off and reshape human bone tissue.

[0027] Among them, the transmission structure 500 includes an eccentric wheel component 510, and the central axis and the rotation axis of the eccentric wheel component 510 are located on non-coaxial straight lines; when the rotary drive device drives the eccentric wheel component 510 to perform eccentric rotational motion, since at least part of the outer side surface of the eccentric wheel component 510 is in contact and connected with the inner wall of the driving groove 311 of the tool mounting assembly 300, and the tool mounting assembly 300 is slidably connected to the interior of the mounting sleeve 200 along the axis of the mounting sleeve 200, the tool mounting assembly 300 can only perform linear reciprocating motion along the axis of the mounting sleeve 200 under the dual restrictions of the eccentric wheel component 510 and the mounting sleeve 200; since the blade body 100 is installed in the tool mounting assembly 300, the purpose of driving the blade body 100 to perform linear reciprocating motion along its own axis is achieved. Furthermore, in the transmission structure 500, since the driving groove 311 is provided with a movable space for the eccentric wheel member 510 to perform eccentric rotational motion, the movable space can also serve as an adjustment space for adjusting the relative position of the eccentric wheel member 510 and the driving groove 311, so that the transmission structure 500 can be internally adjusted to a small extent, so as to reduce the occurrence of the reciprocating saw getting stuck during operation; thereby improving the smoothness of the surgical process and avoiding the occurrence of medical accidents.

[0028] As a preferred solution of the above embodiment, refer to the attached Figure 2 The handle body 400 includes a first handle segment 410 and a second handle segment 420 connected to each other, wherein the first handle segment 410 and the second handle segment 420 are arranged at an angle, and the end of the first handle segment 410 away from the second handle segment 420 is fixedly connected to the mounting sleeve 200; in this way, in the present embodiment, the handle body 400 is divided into the first handle segment 410 and the second handle segment 420, and since the first handle segment 410 and the second handle segment 420 are arranged at an angle, the handle body 400 as a whole has a certain curvature to form a medical plastic surgery bending machine. It should be noted that after understanding the technical solution of the present application, those skilled in the art can think of dividing the handle body 400 into more than three handle segments without creatively paying attention, and it should also fall within the protection scope of the present application.

[0029] Reference Figure 2 And attached Figure 4The transmission structure 500 includes a first rotating shaft 520 and a second rotating shaft 530; the first rotating shaft 520 is rotatably connected to the first handle section 410, the first end of the first rotating shaft 520 is connected to the eccentric wheel member 510, and the second end of the first rotating shaft 520 is connected to the first gear member 521; the second rotating shaft 530 is rotatably connected to the second handle section 420; the first end of the second rotating shaft 530 is connected to the second gear member 531, and the second end of the second rotating shaft 530 is used to connect to the rotation driving device; wherein the first gear member 521 and the second gear member 531 are meshed for transmission and are set at an angle to each other. In this way, the first rotating shaft 520 and the second rotating shaft 530 are rotatably set in the first handle section 410 and the second handle section 420 respectively, and the first rotating shaft 520 and the second rotating shaft 530 are meshed and transmitted through the first gear member 521 and the second gear member 531 to ensure that the rotary drive device can drive the eccentric wheel member 510 to perform eccentric rotational motion through the second rotating shaft 530 and the first rotating shaft 520 in turn, thereby ensuring the smooth implementation of the technical solution of the present application.

[0030] It can be understood that in order to ensure that the first rotating axis 520, the second rotating axis 530 and the third rotating axis 541 that will appear later can be smoothly connected to the first handle segment 410 or the second handle segment 420, the first rotating axis 520, the second rotating axis 530 and the third rotating axis 541 should be provided with corresponding bearing seats (not shown in the drawings), and the first rotating axis 520 / the second rotating axis 530 / the third rotating axis 541 are connected to the first handle segment 410 or the second handle segment 420 through the bearing seats to improve the stability of their rotation.

[0031] As a preferred solution of the above embodiment, refer to the attached Figure 2 And attached Figure 4 The transmission structure 500 also includes a speed regulating component 540, which is arranged between the second end of the second rotating shaft 530 and the rotating drive device; the speed regulating component 540 is used to regulate the rotation rate of the rotating drive device acting on the second rotating shaft 530; in this way, in order to ensure that the rotation rate provided by the rotating drive device is consistent with the preset movement rate of the blade body 100 required for plastic surgery, it is necessary to set the speed regulating component 540 to regulate the rotation rate of the rotating drive device acting on the second rotating shaft 530, so that the actual movement rate of the blade body 100 is consistent with the preset movement rate, thereby ensuring the smooth progress of the plastic surgery.

[0032] In this embodiment, the function of the speed regulating component 540 is to reduce the rotation rate provided by the rotation driving device; specifically, the speed regulating component 540 includes a third rotating shaft 541, a sun gear 542, at least three planetary gears 543 and a planetary carrier 544; the first end of the third rotating shaft 541 is connected to the sun gear 542, and the second end of the third rotating shaft 541 is used to connect to the rotation driving device; at least three planetary gears 543 are arranged around the outer periphery of the sun gear 542, and at least three planetary gears 543 are all engaged with the sun gear 542 for transmission; the first side of the planetary carrier 544 is rotatably connected and installed with the at least three planetary gears 543, and the second side of the planetary carrier 544 is fixedly connected to the second end of the second rotating shaft 530. With such arrangement, the rotation driving device drives the sun gear 542 to rotate via the third rotating shaft 541, that is, the sun gear 542 is the active component; at this time, the planetary gear 543 is the driven component, and under the drive of the sun gear 542, the planetary gear 543 rotates around its own axis on the one hand, and revolves around the sun gear 542 on the other hand; while the planetary gear 543 revolves, it also drives the planetary carrier 544 to rotate, and the transmission relationship between the sun gear 542 and the planetary gear 543 is a speed reduction transmission; thereby, the rotation speed of the second rotating shaft 530 acted by the rotation driving device is reduced.

[0033] It can be understood that after understanding the technical solution of the present application, those skilled in the art can set the function of the speed regulating component 540 to increase the speed of rotation provided by the rotation drive device, and then make corresponding adjustments to the specific structure of the speed regulating component 540 in combination with the prior art, which should also fall within the scope of protection of the present application.

[0034] As a preferred solution of the above embodiment, refer to the attached Figure 2 And attached Figure 5 The transmission mechanism further includes a connecting assembly 550, which is disposed between the speed regulating assembly 540 and the rotary drive device; the connecting assembly 550 is used to connect the speed regulating assembly 540 and the driving end of the rotary drive device to each other; Specifically, the connecting assembly 550 includes a connecting sleeve 551 coaxially arranged with the third rotating shaft 541, a first end of the connecting sleeve 551 is slidably sleeved on the second end of the third rotating shaft 541, and the second end of the connecting sleeve 551 is used to connect the rotating drive device; a fixing ring 552 is sleeved on the middle part of the third rotating shaft 541, and a first spring 553 is sleeved on the third rotating shaft 541, and two ends of the first spring 553 are respectively abutted against the first end of the connecting sleeve 551 and the fixing ring 552. In this way, by setting the first spring 553, a certain elastic movement space is provided between the connecting sleeve 551 and the third rotating shaft 541, so that when the rotating drive device is connected to the second end of the connecting sleeve 551, the connecting sleeve 551 can be displaced forward along the third rotating shaft 541 for a short distance; that is, there is a buffer space between the connecting sleeve 551 and the third rotating shaft 541, so as to avoid the rigid contact between the rotating drive device and the handle body 400 and damage to the transmission structure 500.

[0035] Furthermore, a limiting groove 554 is opened at the first end of the connecting sleeve 551, and the groove direction of the limiting groove 554 is arranged along the axial direction of the third rotating shaft 541; a limiting pin 555 is installed at the second end of the third rotating shaft 541, and the end of the limiting pin 555 is slidably connected in the limiting groove 554. In this arrangement, on the one hand, since the limit pin 555 is installed on the third rotating shaft 541 and its end is located in the limit groove 554 of the connecting sleeve 551, when the rotary drive device drives the connecting sleeve 551 to perform reciprocating rotational motion, the limit pin 555 can drive the third rotating shaft 541 to perform reciprocating rotational motion, so as to ensure that the rotary drive device can smoothly drive the third rotating shaft 541 to perform rotational motion; on the other hand, since the limit pin 555 is restricted from sliding in the limit groove 554, the displacement amplitude of the connecting sleeve 551 relative to the third rotating shaft 541 is restricted, so that the connecting sleeve 551 and the third rotating shaft 541 form a whole, thereby avoiding the separation of the two due to excessive displacement.

[0036] As a preferred solution of the above embodiment, refer to the attached Figure 6-7 The tool installation assembly 300 includes an axial core sleeve 310 and an axial core tube 320 which are sequentially sleeved and connected from the outside to the inside; The shaft core sleeve 310 can be slidably connected to the installation sleeve 200 along the axis of the shaft core tube 320; the driving groove 311 is provided on the outer side of the shaft core sleeve 310; The shaft core tube 320 is fixedly connected to the shaft core sleeve 310. The shaft core tube 320 is provided with a mounting channel 321 extending along its own axis. The cylindrical handle portion 120 can be inserted into the shaft core tube 320 along the mounting channel 321, and the inner side wall of the mounting channel 321 and the outer side surface of the handle portion 120 fit each other to limit the radial movement of the handle portion 120. Among them, a limit piece 130 is provided at the end of the handle part 120 away from the blade part 110, and a notch part 140 is provided at the connection between the limit piece 130 and the handle part 120; the tool mounting assembly 300 also includes a first positioning block 330 and a second positioning block 340; the first positioning block 330 is fixedly arranged in the mounting channel 321, and the first positioning block 330 is used to be embedded in the notch part 140 to limit the axial movement of the handle part 120; the second positioning block 340 is slidably connected to the mounting channel 321, and the second positioning block 340 is used to abut the side of the limit piece 130 to limit the circumferential movement of the handle part 120.

[0037] In this way, by setting the handle 120 into a cylindrical structure, when the handle 120 is inserted into the interior of the shaft core tube 320 through the installation channel 321, the inner side wall of the installation channel 321 and the outer side surface of the handle 120 fit each other, so as to achieve the purpose of limiting the radial movement of the handle 120; at the same time, a first positioning block 330 and a second positioning block 340 are set inside the installation channel 321. When the handle 120 is inserted into the installation channel 321, on the one hand, the first positioning block 330 The blade body 100 is inserted into the notch 140. At this time, the two sides of the first positioning block 330 are respectively in contact with the ends of the handle 120 and the opposite side of the stopper 130, so that the handle 120 cannot move axially under the restriction of the first positioning block 330. On the other hand, the second positioning block 340 slides to abut against the side of the stopper 130, so that the stopper 130 cannot rotate by the second positioning block 340, so that the blade body 120 cannot move circumferentially under the restriction of the second positioning block 340. In summary, the radial movement, axial movement and circumferential movement of the handle 120 are all restricted, so that the blade body 100 cannot be displaced relative to the shaft core tube 320, thereby improving the connection firmness between the blade body 100 and the handle body 400, so as to ensure that the blade body 100 does not deviate and vibrate during the operation.

[0038] Furthermore, an inner recess 210 is provided on the inner side of the mounting sleeve 200, and a guide groove 312 is provided on the outer side of the shaft core sleeve 310, and the groove direction of the guide groove 312 is arranged along the axial direction of the shaft core tube 320; the tool mounting assembly 300 includes a guide member 350, at least a portion of the guide member 350 is embedded in the inner recess 210, and at least a portion of the guide member 350 is slidably connected to the guide groove 312; in this way, at least a portion of the guide member 350 is embedded in the inner recess 210 to make the guide member 350 is fixed to the mounting sleeve 200; at the same time, at least part of the guide member 350 is slidably connected to the guide groove 312, and the groove direction of the guide groove 312 is arranged along the axial direction of the shaft core tube 320. Through the combined action of the guide groove 312 and the guide member 350, it is ensured that when the shaft core sleeve 310 slides relative to the mounting sleeve 200, the sliding trajectory of the shaft core sleeve 310 is arranged along the axial direction of the shaft core tube 320, thereby improving the stability of the shaft core sleeve 310 when sliding relative to the mounting sleeve 200.

[0039] Furthermore, the guide member 350 is in a spherical structure, and the guide member 350 is rotatably connected to the inner recess 210. In this way, the guide member 350 is configured as a spherical structure, so that the connection between the guide member 350 and the guide groove 312 forms a rolling connection, thereby reducing the friction between the guide member 350 and the guide groove 312, thereby reducing the wear of the guide member 350 and / or the guide groove 312 caused by the long-term reciprocating motion of the shaft core sleeve 310 relative to the mounting sleeve 200, which is conducive to extending the service life of the present application.

[0040] Furthermore, a connecting channel 322 is provided between the first positioning block 330 and the mounting channel 321, and the channel cross-sectional area of ​​the connecting channel 322 is larger than the cross-sectional area of ​​the limiting member 130, and the channel cross-sectional area of ​​the connecting channel 322 is smaller than the cross-sectional area of ​​the handle portion 120; such a configuration enables the connecting channel 322 to allow the limiting member 130 to pass through, and the handle portion 120 cannot pass through the connecting channel 322, thereby ensuring that the subsequent first positioning block 330 can be embedded in the notch portion 140 located between the limiting member 130 and the handle portion 120.

[0041] Furthermore, the projection area of ​​the second positioning block 340 along the axial direction of the shaft core tube 320 is defined as a first projection area, and the projection area of ​​the connecting channel 322 along the axial direction of the shaft core tube 320 is defined as a second projection area, and at least part of the first projection area overlaps with the second projection area. By such arrangement, after the limiting member 130 passes through the connecting channel 322, its free end will inevitably abut against the end of the second positioning block 340, and as the handle portion 120 continues to be inserted, the limiting member 130 will drive the second positioning block 340 to move in the insertion direction of the handle portion 120; after the handle portion 120 moves to abut against the first positioning block 330, the blade body 100 is rotated by a certain angle, so that on the one hand, its notch portion 140 and the first positioning block 330 are interlocked, and on the other hand, the abutment of the limiting member 130 on the second positioning block 340 is released, so that the second positioning block 340 can move in the withdrawal direction of the handle portion 120, and the second positioning block 340 and the side of the limiting member 130 are abutted against each other.

[0042] As a preferred embodiment of the above embodiment, the tool mounting assembly 300 also includes a movable sleeve 360, which is slidably arranged between the shaft core sleeve 310 and the shaft core tube 320; the movable sleeve 360 ​​includes a coaxially arranged push sleeve ring 361 and a connecting ring 362, and a second spring 363 is sleeved on the connecting ring 362. A protrusion 313 is provided on the inner side of the shaft core sleeve 310, and the two ends of the second spring 363 are respectively abutted against the protrusion 313 and the push sleeve ring 361; a sliding channel 365 is provided between the shaft core sleeve 310 and the shaft core tube 320 and is arranged along the axial direction of the shaft core tube 320, and a connecting member 364 is slidably arranged in the sliding channel 365, and the connecting ring 362 is fixedly connected to the second positioning block 340 through the connecting member 364. In this configuration, when replacing the blade body 100, it is necessary to first release the restriction of the second positioning block 340 on the limiting member 130, so that the handle portion 120 can rotate circumferentially until its limiting member 130 is aligned with the connecting channel 322, so that the limiting member 130 can pass through the connecting channel 322 to pull the handle portion 120 out of the installation channel 321. Therefore, by providing the movable sleeve 360, the operator can slide the second positioning block 340 through the movable sleeve 360, so that the second positioning block 340 is released from the abutment with the side of the limiting member 130, so that the blade body 100 and the handle body 400 are subsequently separated from each other. Specifically, the movable sleeve 360 ​​is slidably arranged between the shaft core sleeve 310 and the shaft core tube 320, so that the movable sleeve 360 ​​can only slide along the axial direction of the shaft core tube 320 under the outer and inner restriction of the shaft core sleeve 310 and the shaft core tube 320, so as to move the second positioning block 340 by using the connecting piece 364. At the same time, the spring member is used as one of the power sources for moving the push ring 361. When the operator slides the push ring 361 in the insertion direction of the handle portion 120 to compress the spring member, and then the operator releases the force on the push ring 361, the push ring 361 can slide in the withdrawal direction of the handle portion 120 under the elastic force of the spring member. Since the second positioning block 340 is fixedly connected to the connecting ring 362 through the connecting member 364, the second positioning block 340 slides in the withdrawal direction of the handle portion 120, that is, the second positioning block 340 slides to abut against the side of the limit member 130, so as to ensure the smooth implementation of the technical solution of the present application.

[0043] Furthermore, at least a portion of the push collar 361 is exposed outside the shaft core sleeve 310 ; such a configuration makes it easy for the operator to push the push collar 361 through the exposed area, which is beneficial to speeding up the disassembly and assembly efficiency of the blade body 100 .

[0044] Furthermore, the exposed area of ​​the push collar 361 is provided with anti-skid lines (not shown in the drawings). In this way, the anti-skid lines can increase the friction between the operator and the push collar 361, so that the operator can push the push collar 361 easily.

[0045] The following is a detailed description of the disassembly and assembly process of the blade body 100 and the handle body 400 in combination with the above embodiments: When installing the blade body 100: Step 1: Refer to the attached Figure 8 , insert the handle portion 120 of the blade body 100 into the installation channel 321 of the shaft core tube 320, because the inner side wall of the installation channel 321 and the outer side surface of the handle portion 120 are in contact with each other, so as to limit the radial movement of the handle portion 120; Step 2: Refer to the attached Fig. 9 As the handle 120 is further inserted, the limiting member 130 passes through the connecting passage 322 until the first positioning block 330 and the end of the handle 120 abut against each other; during this period, the limiting member 130 abuts against the end of the second positioning block 340 after passing through the connecting passage 322, and as the handle 120 is further inserted, the limiting member 130 drives the second positioning block 340 to move in the insertion direction of the handle 120, and at the same time, the second positioning block 340 drives the push ring 361 to move in the insertion direction of the handle 120 synchronously through the connecting member 364, thereby compressing the spring member sleeved on the connecting ring 362; Step 3: Refer to the attached Figure 10-11 , the blade body 100 is rotated by a certain angle, on the one hand, the notch portion 140 thereof is engaged with the first positioning block 330 to limit the axial movement of the handle portion 120; on the other hand, the abutment of the limiting member 130 on the second positioning block 340 is released, so that the second positioning block 340 and the push sleeve ring 361 move together in the pulling-out direction of the handle portion 120 under the elastic force of the spring member, thereby making the second positioning block 340 and the side of the limiting member 130 abut against each other; since the second positioning block 340 is connected to the connecting member 364, and the connecting member 364 is restricted by the sliding channel 365 to only slide along the axial direction of the shaft core tube 320, the second positioning block 340 cannot move circumferentially, thereby limiting the circumferential movement of the handle portion 120; in this way, the installation operation of the blade body 100 is completed.

[0046] When the blade body 100 is disassembled: Step ④: Push the push ring 361 in the insertion direction of the shank 120, and use the push ring 361 to push the sliding connection member 364. Since the connection member 364 is fixedly connected to the second positioning block 340, the second positioning block 340 also moves in the insertion direction of the shank 120 synchronously, so that the second positioning block 340 releases the restriction on the limiter 130, that is, the second positioning block 340 releases the circumferential movement restriction on the shank 120; Step ⑤: the blade body 100 is moved circumferentially to rotate until the stopper 130 is aligned with the connecting channel 322, and the notch portion 140 is released from the mutual engagement with the first positioning block 330, that is, the first positioning block 330 releases the restriction on the axial movement of the handle portion 120; Step ⑥: Move the handle portion 120 in the pulling-out direction. At this time, the limit member 130 can pass through the connecting channel 322 until the handle portion 120 and the shaft core tube 320 are separated from each other, thereby completing the disassembly operation of the blade body 100; then the push ring 361 moves in the pulling-out direction of the handle portion 120 under the elastic force of the spring for reset. During the reset process, the push ring 361 also drives the second positioning block 340 to move in the pulling-out direction of the handle portion 120 through the connecting member 364 for reset.

[0047] It should be noted that the other contents of the medical plastic surgery reciprocating saw bending machine disclosed in the present invention are prior art and will not be described in detail here.

[0048] The above are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any direct / indirect application of the present invention in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A medical plastic surgery reciprocating saw bender, characterized in that: The medical plastic surgery reciprocating saw bending machine comprises: A blade body, the blade body comprising a blade portion and a handle portion connected to each other; A mounting sleeve, wherein a tool mounting assembly is slidably connected inside the mounting sleeve, and the tool mounting assembly is fixedly connected to the tool handle; A handle body having a certain curvature, wherein a first end of the handle body is connected to the mounting sleeve, and a second end of the handle body is used to connect to an external rotation drive device; a transmission structure, the transmission structure being installed inside the handle body, so that the rotary drive device can drive the tool mounting assembly to make linear reciprocating motion along the axis of the mounting sleeve relative to the mounting sleeve through the transmission structure, thereby making the blade body mounted on the tool mounting assembly make linear reciprocating motion along its own axis; Specifically, the transmission structure includes an eccentric wheel component, the central axis and the rotation axis of the eccentric wheel component are located on non-colinear lines; the eccentric wheel component is arranged in a driving groove of the tool mounting assembly, and the driving groove is provided with a movable space for the eccentric wheel component to perform eccentric rotational motion; the eccentric wheel component can perform eccentric rotational motion under the drive of the rotation drive device, and during the eccentric rotational motion of the eccentric wheel component, at least part of its outer side surface remains in contact and connected with the inner wall of the driving groove.

2. The medical plastic surgery reciprocating saw bender according to claim 1, characterized in that: The handle body comprises a first handle segment and a second handle segment connected to each other, wherein the first handle segment and the second handle segment are arranged at an angle, and one end of the first handle segment away from the second handle segment is fixedly connected to the mounting sleeve; The transmission structure includes a first rotating shaft and a second rotating shaft; The first rotating shaft is rotatably connected to the first handle section, the first end of the first rotating shaft is connected to the eccentric wheel component, and the second end of the first rotating shaft is connected to the first gear component; The second rotating shaft is rotatably connected to the second handle section; the first end of the second rotating shaft is connected to the second gear member, and the second end of the second rotating shaft is used to connect to the rotating drive device; wherein the first gear member and the second gear member are meshed for transmission and are set at an angle to each other.

3. The medical plastic surgery reciprocating saw bender according to claim 2, characterized in that: The transmission structure further comprises a speed regulating assembly, which is disposed between the second end of the second rotating shaft and the rotation driving device; the speed regulating assembly is used to regulate the rotation rate of the second rotating shaft acted by the rotation driving device; Specifically, the speed regulation assembly includes a third rotating shaft, a sun gear, at least three planetary gears and a planetary carrier; the first end of the third rotating shaft is connected to the sun gear, and the second end of the third rotating shaft is used to connect to the rotation drive device; at least three planetary gears are arranged around the outer periphery of the sun gear, and at least three planetary gears are meshed with the sun gear for transmission; the first side of the planetary carrier is rotatably connected and installed with at least three planetary gears, and the second side of the planetary carrier is fixedly connected to the second end of the second rotating shaft.

4. The medical plastic surgery reciprocating saw bender as claimed in claim 3, characterized in that: The transmission mechanism further comprises a connecting assembly, which is arranged between the speed regulating assembly and the rotary drive device; the connecting assembly is used to connect the speed regulating assembly and the driving end of the rotary drive device to each other; Specifically, the connecting assembly includes a connecting sleeve coaxially arranged with the third rotating shaft, the first end of the connecting sleeve is slidably sleeved on the second end of the third rotating shaft, and the second end of the connecting sleeve is used to connect the rotation drive device; a fixing ring is sleeved on the middle part of the third rotating shaft, and a first spring is sleeved on the third rotating shaft, and the two ends of the first spring are respectively abutted against the first end of the connecting sleeve and the fixing ring.

5. The medical plastic surgery reciprocating saw bender according to claim 4, characterized in that: A limiting groove is provided at the first end of the connecting sleeve, and the groove direction of the limiting groove is arranged along the axial direction of the third rotating shaft; a limiting pin is installed at the second end of the third rotating shaft, and the end of the limiting pin is slidably connected to the limiting groove.

6. The medical plastic surgery reciprocating saw bender according to claim 1, characterized in that: The tool installation assembly comprises an axial core sleeve and an axial core tube which are sequentially sleeved and connected from the outside to the inside; The shaft core sleeve can be slidably connected with the installation sleeve along the axis of the shaft core tube; the driving groove is arranged on the outer side of the shaft core sleeve; The shaft core tube is fixedly connected to the shaft core sleeve, and a mounting channel extending along the axis of the shaft core tube is provided inside the shaft core tube, and the tool handle portion of the cylindrical structure can be inserted into the shaft core tube along the mounting channel, and the inner side wall of the mounting channel and the outer side surface of the tool handle portion are fitted to each other to limit the radial movement of the tool handle portion; Among them, a limit piece is provided at the end of the shank portion away from the blade portion, and a notch portion is provided at the connection between the limit piece and the shank portion; the tool mounting assembly also includes a first positioning block and a second positioning block; the first positioning block is fixedly arranged in the mounting channel, and the first positioning block is used to be embedded in the notch portion to limit the axial movement of the shank portion; the second positioning block is slidably connected to the mounting channel, and the second positioning block is used to abut the side of the limit piece to limit the circumferential movement of the shank portion.

7. The medical plastic surgery reciprocating saw bender according to claim 6, characterized in that: The inner side of the installation sleeve is provided with an inner concave portion, and the outer side of the shaft core sleeve is provided with a guide groove, and the groove direction of the guide groove is arranged along the axial direction of the shaft core tube; the tool installation assembly includes a guide member, at least part of the guide member is embedded and connected with the inner concave portion, and at least part of the guide member is slidably connected with the guide groove; Furthermore, the guide member is in a spherical structure, and is rotatably connected to the inner recess.

8. The medical plastic surgery reciprocating saw bender according to claim 6, characterized in that: A connecting channel is provided between the first positioning block and the mounting channel, the channel cross-sectional area of ​​the connecting channel is larger than the cross-sectional area of ​​the limiting member, and the channel cross-sectional area of ​​the connecting channel is smaller than the cross-sectional area of ​​the shank portion; Furthermore, the projection area of ​​the second positioning block along the axial direction of the shaft core tube is defined as a first projection area, and the projection area of ​​the connecting channel along the axial direction of the shaft core tube is defined as a second projection area, and at least part of the first projection area overlaps with the second projection area.

9. The medical plastic surgery reciprocating saw bender according to claim 6, characterized in that: The tool mounting assembly also includes a movable sleeve, which is slidably arranged between the shaft core sleeve and the shaft core tube; the movable sleeve includes a coaxially arranged push sleeve ring and a connecting ring, a second spring is sleeved on the connecting ring, a protrusion is provided on the inner side of the shaft core sleeve, and the two ends of the second spring are respectively abutted against the protrusion and the push sleeve ring; a sliding channel arranged along the axial direction of the shaft core tube is provided between the shaft core sleeve and the shaft core tube, a connecting piece is slidably arranged in the sliding channel, and the connecting ring is fixedly connected to the second positioning block through the connecting piece.

10. The medical plastic surgery reciprocating saw bender according to claim 9, characterized in that: At least part of the push sleeve ring is exposed outside the shaft core sleeve; and the exposed area of ​​the push sleeve ring is provided with anti-slip lines.

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