Medical plastic surgery reciprocating saw bending machine

Abstract

The present invention discloses a medical plastic surgery reciprocating saw bender, which relates to the technical field of medical plastic surgery instruments; the medical plastic surgery reciprocating saw bender comprises a blade body and a handle body with a certain bending curvature, the blade body comprising a blade portion and a handle portion connected to each other; the first end of the handle body is connected to the mounting sleeve, and the second end of the handle body is used to connect to an external rotation drive device; the transmission structure is installed inside the handle body, so that the rotation drive device can drive the tool mounting assembly to perform linear reciprocating motion relative to the mounting sleeve along the axis of the mounting sleeve through the transmission structure, thereby causing the blade body installed on the tool mounting assembly to perform linear reciprocating motion along its own axis; the technical solution provided by the present invention can reduce the occurrence of jamming of the reciprocating saw during operation, thereby improving the stability of the surgical process and avoiding the occurrence of medical accidents.

Description

Technical Field

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

[0002] A medical plastic surgery reciprocating saw bend is a general term for a medical plastic surgery handpiece equipped with a reciprocating saw and having a curved handle. During plastic surgery, a medical plastic surgery reciprocating saw bend drives the blade body to move back and forth along its own axis to saw and reshape human bone tissue. Prior art medical plastic surgery reciprocating saw bends have complex internal transmission structures, making the reciprocating saw prone to jamming during operation, affecting the smoothness of the surgical process and, in severe cases, potentially leading to medical accidents.

[0003] It should be noted that the above content is only used to assist in understanding the technical solution of the present invention and does not constitute an admission that the above content is 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 reciprocating saw jamming during operation, thereby improving the stability of the surgical process and avoiding medical accidents.

[0005] To achieve the above-mentioned purpose, the present invention provides a medical plastic surgery reciprocating saw bending machine;

[0006] Specifically, the medical plastic surgery reciprocating saw bending machine includes:

[0007] A blade body, the blade body comprising a blade portion and a handle portion connected thereto;

[0008] A mounting sleeve, wherein a tool mounting assembly is slidably connected to the interior of the mounting sleeve, and the tool mounting assembly is fixedly connected to the tool handle;

[0009] 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;

[0010] a transmission structure installed inside the handle body so that the rotary drive device can drive the tool mounting assembly to perform linear reciprocating motion relative to the mounting sleeve along the axis of the mounting sleeve through the transmission structure, thereby causing the blade body mounted on the tool mounting assembly to perform linear reciprocating motion along its own axis;

[0011] Specifically, the transmission structure includes an eccentric wheel member, the central axis and the rotation axis of the eccentric wheel member are located on non-coaxial lines; the eccentric wheel member is arranged in the drive groove of the tool mounting assembly, and the drive groove is provided with a movable space for the eccentric wheel member to perform eccentric rotational motion; the eccentric wheel member can perform eccentric rotational motion under the drive of the rotation drive device, and during the eccentric rotational motion of the eccentric wheel member, at least part of its outer surface remains in contact and connected with the inner wall of the drive groove.

[0012] In one embodiment, the handle body includes 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;

[0013] The transmission structure includes a first rotating shaft and a second rotating shaft;

[0014] The first rotating shaft is rotatably connected to the first handle section, a first end of the first rotating shaft is connected to the eccentric wheel component, and a second end of the first rotating shaft is connected to the first gear component;

[0015] 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 rotation 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.

[0016] In one embodiment, the transmission structure further includes a speed regulating assembly, the speed regulating assembly being disposed between the second end of the second rotating shaft and the rotation driving device; the speed regulating assembly being configured to regulate the rotation rate of the second rotating shaft acted upon by the rotation driving device;

[0017] 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 engaged 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.

[0018] In one embodiment, the transmission structure 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;

[0019] 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.

[0020] 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.

[0021] In one embodiment, the tool mounting assembly includes an axial core sleeve and an axial core tube that are sequentially sleeved and connected from the outside to the inside;

[0022] The shaft core sleeve can be slidably connected to the mounting sleeve along the axis of the shaft core tube; the driving groove is provided on the outer side of the shaft core sleeve;

[0023] The shaft core tube is fixedly connected to the shaft core sleeve, and a mounting channel is provided inside the shaft core tube extending along its own axis. The cylindrical shank portion 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 shank portion fit together to limit the radial movement of the shank portion.

[0024] In which, 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.

[0025] 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, and 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 the inner recess, and at least a portion of the guide member is slidingly connected to the guide groove; and the guide member has a spherical structure, and the guide member is rotatably connected to the inner recess.

[0026] In one embodiment, a connecting channel is provided between the first positioning block and the mounting channel, wherein a channel cross-sectional area of ​​the connecting channel is larger than a cross-sectional area of ​​the limiting member, and a channel cross-sectional area of ​​the connecting channel is smaller than a cross-sectional area of ​​the shank portion;

[0027] 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.

[0028] In one embodiment, the tool mounting assembly also includes a movable sleeve, which is slidably arranged between the axial core sleeve and the axial 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 axial 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 axial core sleeve and the axial core tube along the axial direction of the axial 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.

[0029] In one embodiment, at least a portion of the push collar is exposed outside the shaft core sleeve;

[0030] In one embodiment, the exposed area of ​​the push collar is provided with anti-slip lines.

[0031] The technical solution of the present invention drives the tool mounting assembly to perform 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 perform linear reciprocating motion along its own axis, so that the blade portion can be used to saw off and reshape human bone tissue.

[0032] The transmission structure includes an eccentric wheel, wherein the central axis and the rotation axis of the eccentric wheel are not aligned. When the rotary drive device drives the eccentric wheel to perform eccentric rotational motion, at least a portion of the outer surface of the eccentric wheel maintains contact with the inner wall of the drive slot of the tool mounting assembly, and the tool mounting assembly is slidably connected to the interior of the mounting sleeve along the axis of the mounting sleeve. Therefore, under the dual constraints of the eccentric wheel and the mounting sleeve, the tool mounting assembly can only perform linear reciprocating motion along the axis of the mounting sleeve, thereby achieving the purpose of driving the blade body to perform linear reciprocating motion along its own axis. Furthermore, in the transmission structure, because the drive slot is provided with a movable space for the eccentric wheel to perform eccentric rotational motion, the movable space also serves as an adjustment space for adjusting the relative position of the eccentric wheel and the drive slot, thereby enabling small adjustments within the transmission structure to reduce the occurrence of jamming of the reciprocating saw during operation, thereby improving the smoothness of the surgical process and avoiding medical accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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.

[0034] 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;

[0035] 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;

[0036] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0037] Figure 4 for Figure 2 A partial enlarged view of point B in the middle;

[0038] Figure 5 A schematic diagram of the exploded structure of the connecting assembly in one embodiment of the medical orthopedic reciprocating saw bender provided by the present invention;

[0039] Figure 6 A schematic diagram of the exploded structure of a tool mounting assembly in an embodiment of a medical orthopedic reciprocating saw bender provided by the present invention;

[0040] Figure 7 A schematic diagram of the internal structure of a tool mounting assembly in an embodiment of a medical orthopedic reciprocating saw bender provided by the present invention;

[0041] Figure 8 This is a schematic diagram of the installation steps of the blade body in one embodiment of the medical orthopedic reciprocating saw bender provided by the present invention;

[0042] Figure 9 The second schematic diagram of the steps for installing the blade body of an embodiment of the medical orthopedic reciprocating saw bender provided by the present invention;

[0043] Figure 10 The third schematic diagram of the steps for installing the blade body of an embodiment of the medical orthopedic reciprocating saw bender provided by the present invention;

[0044] Figure 11 This is 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.

[0045] Description of reference numerals:

[0046] 100, blade body; 110, blade portion; 120, handle portion; 130, limiter; 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 collar; 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 member; 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;

[0047] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0048] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the accompanying drawings. Obviously, the description is only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0049] 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 various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0050] In addition, it should be noted that the descriptions of "first", "second", etc. in the present invention are for descriptive purposes only and should not 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" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. 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.

[0051] A medical plastic surgery reciprocating saw bend is a general term for a medical plastic surgery handpiece equipped with a reciprocating saw and having a curved handle. During plastic surgery, a medical plastic surgery reciprocating saw bend drives the blade body to move back and forth along its own axis to saw and reshape human bone tissue. Prior art medical plastic surgery reciprocating saw bends have complex internal transmission structures, making the reciprocating saw prone to jamming during operation, affecting the smoothness of the surgical process and, in severe cases, potentially leading to medical accidents.

[0052] In order to solve the above technical problems, the present invention proposes a medical plastic surgery reciprocating saw bending machine.

[0053] See also Figure 1-3 In one embodiment of the present invention, the medical plastic surgery reciprocating saw bender comprises:

[0054] The blade body 100 includes a blade portion 110 and a handle portion 120 connected to each other;

[0055] The mounting sleeve 200 is slidably connected to the interior of the mounting sleeve 200 with a tool mounting assembly 300, and the tool mounting assembly 300 is fixedly connected to the handle portion 120;

[0056] A handle body 400 having a certain curvature, wherein a first end of the handle body 400 is connected to the mounting sleeve 200, and a second end of the handle body 400 is used to connect to an external rotation drive device (not shown in the drawings);

[0057] 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 perform linear reciprocating motion relative to the mounting sleeve 200 along the axis of the mounting sleeve 200 through the transmission structure 500, thereby causing the blade body 100 mounted on the tool mounting assembly 300 to perform linear reciprocating motion along its own axis;

[0058] 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-coaxial lines; the eccentric wheel component 510 is arranged in the 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 the rotation driving device, and during the eccentric rotational motion of the eccentric wheel component 510, at least part of its outer surface remains in contact and connected with the inner wall of the driving groove 311.

[0059] The technical solution of the present invention drives the tool mounting assembly 300 to perform 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 perform linear reciprocating motion along its own axis, so that the blade portion 110 can be used to saw off and reshape human bone tissue.

[0060] 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 lines; when the rotary drive device drives the eccentric wheel component 510 to perform eccentric rotational motion, since at least part of the outer 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 inside 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 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 510 and the driving groove 311, so that the position inside the transmission structure 500 can be adjusted slightly 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.

[0061] As a preferred solution of the above embodiment, refer to the attached Figure 2The 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. With this arrangement, in this embodiment, the handle body 400 is divided into the first handle segment 410 and the second handle segment 420. 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, thereby forming a medical plastic surgery contraflex machine. It should be noted that after understanding the technical solution of this application, those skilled in the art can, without creatively thinking of dividing the handle body 400 into three or more handle segments, which should also fall within the scope of protection of this application.

[0062] Reference Attachment Figure 2 and attached Figure 4 The 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 drive 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 at the same time, the first rotating shaft 520 and the second rotating shaft 530 are engaged and transmitted through the first gear part 521 and the second gear part 531 to ensure that the rotation drive device can drive the eccentric wheel part 510 to perform eccentric rotation movement through the second rotating shaft 530 and the first rotating shaft 520 in turn, thereby ensuring the smooth implementation of the technical solution of this application.

[0063] It can be understood that in order to ensure that the first rotating shaft 520, the second rotating shaft 530 and the third rotating shaft 541 that will appear later can be smoothly rotatably connected to the first handle segment 410 or the second handle segment 420, the first rotating shaft 520, the second rotating shaft 530 and the third rotating shaft 541 should be set with corresponding bearing seats (not shown in the drawings), and the first rotating shaft 520 / the second rotating shaft 530 / the third rotating shaft 541 are rotatably connected to the first handle segment 410 or the second handle segment 420 through the bearing seats to improve the stability of their rotation.

[0064] As a preferred solution of the above embodiment, refer to the attached Figure 2 and attached Figure 4The 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 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.

[0065] In this embodiment, the function of the speed regulation component 540 is to reduce the rotation rate provided by the rotation drive device; specifically, the speed regulation component 540 includes a third rotation shaft 541, a sun gear 542, at least three planetary gears 543 and a planetary carrier 544; the first end of the third rotation shaft 541 is connected to the sun gear 542, and the second end of the third rotation shaft 541 is used to connect to the rotation drive 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 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 rotation shaft 530. With such arrangement, the rotation driving device drives the sun gear 542 to rotate via the third rotation 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 driving device acts on the rotation rate of the second rotation shaft 530 to reduce the speed.

[0066] It is understandable 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 existing technology, which should also fall within the scope of protection of the present application.

[0067] As a preferred solution of the above embodiment, refer to the attached Figure 2 and attached Figure 5 The transmission structure 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;

[0068] Specifically, the connecting assembly 550 includes a connecting sleeve 551 coaxially disposed with the third rotating shaft 541. A first end of the connecting sleeve 551 is slidably mounted on the second end of the third rotating shaft 541, and the second end of the connecting sleeve 551 is used to connect to the rotary drive device. A fixing ring 552 is mounted in the middle of the third rotating shaft 541. A first spring 553 is mounted on the third rotating shaft 541, with both ends of the first spring 553 abutting against the first end of the connecting sleeve 551 and the fixing ring 552, respectively. This arrangement creates a certain amount of elastic movement between the connecting sleeve 551 and the third rotating shaft 541, allowing the connecting sleeve 551 to move forward a short distance along the third rotating shaft 541 when the rotary drive device is connected to the second end of the connecting sleeve 551. This provides a buffer space between the connecting sleeve 551 and the third rotating shaft 541, preventing the rotary drive device from rigidly contacting the handle body 400 and potentially damaging the transmission structure 500.

[0069] 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 set 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 to the limiting groove 554. With such 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 also 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 limited, so that the connecting sleeve 551 and the third rotating shaft 541 form a whole, thereby avoiding the two being separated from each other due to excessive displacement.

[0070] As a preferred solution of the above embodiment, refer to the attached Figure 6-7 The tool mounting 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;

[0071] 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;

[0072] The shaft core tube 320 is fixedly connected to the shaft core sleeve 310. The shaft core tube 320 has an installation passage 321 extending along its own axis. The cylindrical handle portion 120 can be inserted into the shaft core tube 320 along the installation passage 321. The inner side wall of the installation passage 321 and the outer side surface of the handle portion 120 fit together to limit the radial movement of the handle portion 120.

[0073] 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 portion 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 portion 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.

[0074] In this way, by setting the handle portion 120 into a cylindrical structure, when the handle portion 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 portion 120 fit together to achieve the purpose of limiting the radial movement of the handle portion 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 portion 120 is inserted into the installation channel 321, on the one hand, the first positioning block 330 The first positioning block 330 is inserted into the notch 140. At this time, the two sides of the first positioning block 330 respectively abut against the ends of the handle portion 120 and the limiting member 130 on the opposite side, so that the handle portion 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 limiting member 130, so that the limiting member 130 cannot rotate by the second positioning block 340, so that the handle portion 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 portion 120 are all restricted, so that the blade body 100 cannot be displaced relative to the shaft core tube 320, thereby improving the connection strength between the blade body 100 and the handle body 400, and ensuring that the blade body 100 does not deviate or vibrate during surgery.

[0075] Furthermore, an inner concave portion 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 part of the guide member 350 is embedded in the inner concave portion 210, and at least part of the guide member 350 is slidably connected to the guide groove 312; in this way, at least part of the guide member 350 is embedded in the inner concave portion 210 to 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 set 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 set 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.

[0076] Furthermore, the guide member 350 is spherical in structure and is rotatably connected to the inner recess 210. Thus, the guide member 350 is spherical in 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.

[0077] 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.

[0078] 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. The arrangement is such that 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 a certain angle, on the one hand, so that its notch portion 140 and the first positioning block 330 are interlocked with each other, 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.

[0079] As a preferred solution 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 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 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. With this arrangement, it is necessary to first release the restriction of the second positioning block 340 on the limiting member 130 when replacing the blade body 100, 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 and the handle portion 120 can be removed from 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 ​​to release the second positioning block 340 from abutting against the side of the limiting member 130, thereby subsequently separating the blade body 100 from the handle body 400. 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 external and internal restriction of the shaft core sleeve 310 and the shaft core tube 320, so as to use the connecting member 364 to move the second positioning block 340. 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 shank 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 shank 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 shank 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 this application.

[0080] Furthermore, at least a portion of the push collar 361 is exposed outside the shaft core sleeve 310 ; this arrangement facilitates 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 .

[0081] Furthermore, the exposed area of ​​the push collar 361 is provided with anti-skid lines (not shown in the drawings). Such arrangement increases the friction between the operator and the push collar 361 through the anti-skid lines, thereby facilitating the operator to push the push collar 361.

[0082] The following describes the disassembly and assembly process of the blade body 100 and the handle body 400 in detail in combination with the above embodiment:

[0083] When installing the blade body 100:

[0084] Step 1: Refer to the attached Figure 8 Insert the handle portion 120 of the blade body 100 into the mounting channel 321 of the shaft core tube 320. Since the inner side wall of the mounting channel 321 and the outer side surface of the handle portion 120 fit together, the radial movement of the handle portion 120 is restricted.

[0085] Step ②: Refer to the attached Figure 9 As the shank portion 120 continues to be inserted, its limiting member 130 passes through the connecting channel 322 until the first positioning block 330 and the end of the shank portion 120 abut against each other; during this period, its limiting member 130 abuts against the end of the second positioning block 340 after passing through the connecting channel 322, and as the shank portion 120 continues to be inserted, the limiting member 130 drives the second positioning block 340 to move in the insertion direction of the shank portion 120, and at the same time, the second positioning block 340 drives the push ring 361 to move in the insertion direction of the shank portion 120 synchronously through the connecting member 364, thereby compressing the spring member sleeved on the connecting ring 362;

[0086] Step 3: Refer to the attached Figure 10-11 , the blade body 100 is rotated by a certain angle, on the one hand, so that its notch portion 140 and the first positioning block 330 are engaged with each other 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 pushing 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 abut against the side of the limiting member 130; because the second positioning block 340 is connected to the connecting member 364, and the connecting member 364 is restricted by the sliding channel 365 and can 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.

[0087] When the blade body 100 is disassembled:

[0088] Step 4: Push the push collar 361 in the insertion direction of the shank portion 120, and use the push collar 361 to push the sliding connector 364. Since the connector 364 is fixedly connected to the second positioning block 340, the second positioning block 340 also moves in the insertion direction of the shank portion 120, thereby releasing the restriction on the limiting member 130 by the second positioning block 340, that is, the second positioning block 340 releases the restriction on the circumferential movement of the shank portion 120;

[0089] Step 5: The blade body 100 is circumferentially moved until the limiting member 130 is aligned with the connecting channel 322. At this time, 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 shank portion 120.

[0090] Step ⑥: Move the handle portion 120 in the direction of pulling out. 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 direction of pulling out the handle portion 120 under the elastic force of the spring to reset. During the resetting process, the push ring 361 also drives the second positioning block 340 to move in the direction of pulling out the handle portion 120 through the connecting member 364 to reset.

[0091] It should be noted that the other contents of the medical plastic surgery reciprocating saw bender disclosed in the present invention are prior art and will not be described in detail here.

[0092] 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 thereto; A mounting sleeve, wherein a tool mounting assembly is slidably connected to the interior of 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 installed inside the handle body so that the rotary drive device can drive the tool mounting assembly to perform linear reciprocating motion relative to the mounting sleeve along the axis of the mounting sleeve through the transmission structure, thereby causing the blade body mounted on the tool mounting assembly to perform linear reciprocating motion along its own axis; Specifically, the transmission structure includes an eccentric wheel member, wherein the central axis and the rotation axis of the eccentric wheel member are located on non-colinear lines; the eccentric wheel member is disposed in a drive slot of the tool mounting assembly, wherein the drive slot is provided with a movable space for the eccentric wheel member to perform eccentric rotational motion; the eccentric wheel member is capable of performing eccentric rotational motion under the drive of the rotation drive device, and during the eccentric rotational motion, at least a portion of an outer surface of the eccentric wheel member maintains contact and connection with an inner wall of the drive slot; The transmission structure includes a first rotating shaft and a second rotating shaft; the second end of the second rotating shaft is used to connect to the rotation drive device; The transmission structure further includes a speed regulating assembly disposed between the second end of the second rotating shaft and the rotation drive device; the speed regulating assembly is configured to regulate the rotation rate of the second rotating shaft as applied by the rotation drive device; the speed regulating assembly includes a third rotating shaft, a sun gear, at least three planetary gears, and a planet carrier; The transmission structure further includes 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.

2. The medical plastic surgery reciprocating saw bender according to claim 1, characterized in that: The handle body includes 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 first rotating shaft is rotatably connected to the first handle section, a first end of the first rotating shaft is connected to the eccentric wheel component, and a 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, wherein the first gear member and the second gear member are meshed and transmitted and are arranged at an angle to each other.

3. The medical plastic surgery reciprocating saw bender according to claim 2, characterized in that: 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 engaged 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 according to claim 1, 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.

5. The medical plastic surgery reciprocating saw bender according to claim 1, characterized in that: The tool installation 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 to the mounting sleeve along the axis of the shaft core tube; the driving groove is provided 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 is provided inside the shaft core tube extending along its own axis. The cylindrical shank portion 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 shank portion fit together to limit the radial movement of the shank portion. In which, 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.

6. The medical plastic surgery reciprocating saw bender according to claim 5, characterized in that: The inner side of the mounting 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 mounting assembly includes a guide member, at least a portion of the guide member is embedded in the inner concave portion, and at least a portion of the guide member is slidably connected to the guide groove; Furthermore, the guide member is in a spherical structure and is rotatably connected to the inner recess.

7. The medical plastic surgery reciprocating saw bender according to claim 5, characterized in that: A connecting channel is provided between the first positioning block and the mounting channel, wherein 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; In addition, 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.

8. The medical orthopedic reciprocating saw bender according to claim 5, 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 is provided between the shaft core sleeve and the shaft core tube along the axial direction of 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.

9. The medical plastic surgery reciprocating saw bender according to claim 8, characterized in that: At least a portion of the push collar is exposed outside the shaft core sleeve; and the exposed area of ​​the push collar is provided with anti-slip lines.

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