Medical orthopedics department punching device

Abstract

The invention provides a medical orthopedics department punching device, and relates to the technical field of medical instruments, the medical orthopedics department punching device comprises a shell, and a driving mechanism is arranged in the shell in a communicating mode; the connecting cylinder is in transmission connection with the driving mechanism; a sawtooth ring is fixedly connected to the bottom end of the connecting cylinder; the end mill is connected into the connecting cylinder, the peripheral wall of the end mill is in clearance fit with the inner wall of the connecting cylinder, and the end face of the end mill corresponds to the top end of the sawtooth ring. The annular groove is formed in the bone through pre-cutting of the sawtooth ring, the hole diameter of the required bone hole is obtained, powdery chippings generated by cutting the bone through the sawtooth ring enter the connecting cylinder, then the cylindrical bone in the connecting cylinder is milled through the end mill, and the bone chippings generated by milling and the powdery chippings in the connecting cylinder are uniformly distributed in the connecting cylinder. The bone hole is formed after the cylindrical bone is milled by the end mill, so that the stress concentration of the bone hole in the drilling process is effectively avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a medical orthopedic punching device. Background Art

[0002] Orthopedics, also known as orthopedic surgery, is a medical specialty or discipline that specializes in the anatomy, physiology, and pathology of the skeletal muscle system, using drugs, surgery, and physical methods to maintain and develop the normal form and function of this system, as well as treat injuries and diseases of this system.

[0003] For orthopedic diseases, the most common method of modern medicine is surgical treatment. When a certain part of the patient's bone is difficult to repair due to disease or trauma, a prosthesis needs to be implanted to replace the damaged bone. In the process of implanting the prosthesis, the patient's original bones need to be cut, punched, polished, etc. When drilling the patient's bones, an orthopedic punching device needs to be used.

[0004] Most of the existing orthopedic drilling devices use a motor to drive a drill bit to drill holes. Due to the bone chips and other debris generated during the drilling process, they accumulate and squeeze between the drill bit and the drilled bone hole. As a result, during the drilling process of the drill bit, stress concentration is easily caused in the drilled bone hole, forming bone cracks on the bone at the drilling site, causing secondary damage to the bone at the drilling site of the patient.

[0005] Therefore, how to avoid stress concentration in the bone hole during drilling is a problem that needs to be solved urgently in the technical field. Summary of the invention

[0006] The purpose of the present invention is to provide a medical orthopedic drilling device to improve the above problems. In order to achieve the above purpose, the technical solution adopted by the present invention is as follows: The present application provides a medical orthopedic drilling device, comprising: A housing, wherein a driving mechanism is disposed in the housing; A connecting tube, the connecting tube is drivingly connected to the driving mechanism, a sawtooth ring is fixedly connected to the bottom end of the connecting tube, and the sawtooth ring is used to pre-cut a ring groove on the bone; An end mill is connected in the connecting tube, the peripheral wall of the end mill is gap-matched with the inner wall of the connecting tube, the end face of the end mill is arranged corresponding to the top end of the serrated ring, and the end mill is used to mill the cylindrical bone located in the connecting tube.

[0007] Preferably, it further comprises a guiding mechanism, wherein the guiding mechanism comprises: A three-degree-of-freedom adjustment device, the three-degree-of-freedom adjustment device is used for height adjustment, lateral adjustment and longitudinal adjustment, and the three-degree-of-freedom adjustment device is connected to an L-shaped support arm; A worm gear rotating platform, wherein the worm gear rotating platform is connected to the L-shaped support arm; A pitch adjustment assembly, the pitch adjustment assembly being arranged on the worm gear rotating platform; A displacement drive assembly, wherein the displacement drive assembly is arranged on the pitch adjustment assembly, the shell is transmission-connected to the displacement drive assembly, and the displacement drive assembly is used to drive the shell to perform horizontal displacement.

[0008] Preferably, the driving mechanism comprises: An internal threaded barrel, the internal threaded barrel is connected and arranged in the housing through a bearing, an external threaded barrel is integrally arranged on the outer wall of the connecting barrel, the external threaded barrel is threadedly connected in the internal threaded barrel, the external threaded barrel is also integrally arranged with abutment ring, the abutment ring abuts against the internal threaded barrel, and a bevel gear I is also connected to the outer wall of the internal threaded barrel; A driving motor is connected and arranged on the housing, and the driving motor is connected to a bevel gear II, and the bevel gear II is meshed with the bevel gear I.

[0009] Preferably, the shank of the end mill is configured as a threaded shank, a limiting cylinder is fixedly connected in the connecting cylinder, the threaded shank is threadedly connected in the limiting cylinder, a plurality of guide grooves I are provided on the outer wall of the limiting cylinder, and the guide grooves I are connected to the chip removal grooves of the end mill.

[0010] Preferably, a chip collecting bucket is also provided in the shell, the top of the chip collecting bucket is fixedly connected with a closed ring plate, the closed ring plate is connected with a closed cylinder, the closed cylinder is located in the chip collecting bucket, the top of the connecting cylinder is passed through the closed cylinder, the outer side of the top end of the connecting cylinder is fixedly connected with an annular diaphragm, the annular diaphragm is located in the chip collecting bucket, and the outer diameter of the annular diaphragm is larger than the outer diameter of the closed cylinder.

[0011] Preferably, the pitch adjustment assembly comprises: A U-shaped connecting plate, the U-shaped connecting plate is connected to the worm gear rotating platform, and a sliding groove is provided at the inner bottom end of the U-shaped connecting plate; A connecting seat, wherein a sector gear is integrally provided at the bottom end of the connecting seat, the middle position of the sector gear is hinged to the U-shaped connecting plate, and the displacement driving assembly is arranged on the connecting seat; A rack is slidably connected in the slide groove, one side of the U-shaped connecting plate is threadedly connected with a handle bolt I, the other side of the U-shaped connecting plate is threadedly connected with a handle bolt II, the end of the handle bolt I abuts against one end of the rack, and the end of the handle bolt II abuts against the other end of the rack.

[0012] Preferably, the displacement drive assembly comprises: A support plate, the support plate being fixedly connected to the pitch adjustment assembly; A ball screw I, wherein the ball screw I is connected to the support plate, the ball screw I is drivingly connected to a moving seat, the moving seat is slidably connected to the support plate, the housing is connected to the moving seat, and the screw of the ball screw I is connected to a bevel gear III; A driving rod, the driving rod is rotatably connected to the support plate, one end of the driving rod is connected to a bevel gear IV, the bevel gear IV is meshed with the bevel gear III, and the other end of the driving rod is connected to a driving hand wheel I.

[0013] Preferably, the outer diameter of the serrated ring is larger than the outer diameter of the connecting tube, and a plurality of guide grooves II are provided on the inner wall of the serrated ring, and the guide grooves II are used to guide the debris generated by the serrated ring cutting bones into the connecting tube.

[0014] Preferably, it also includes a transparent telescopic tube, one end of which is fixedly connected to a connecting ring, the other end of which is fixedly connected to a tightening ring, the connecting ring is connected to the shell, the connecting tube is passed through the transparent telescopic tube, a spring is further connected between the connecting ring and the tightening ring, the spring is used to support the expansion of the transparent telescopic tube, and a collecting ring piece is integrally provided at the inner bottom end of the tightening ring, the collecting ring piece is used to collect debris generated by the serrated ring when cutting bones.

[0015] Preferably, the connecting ring is connected with a connecting pipe, which is used to connect to a gas delivery device to inject cooling gas into the transparent telescopic tube, and the connecting tube is configured as a medical aluminum alloy connecting tube, which is used to conduct and dissipate the heat generated by the sawtooth ring cutting.

[0016] The beneficial effects of the present invention are: The present invention obtains the required bone hole diameter by pre-cutting an annular groove on the bone through a serrated ring. The powdered debris generated by the serrated ring cutting the bone enters the connecting tube, and then the cylindrical bone in the connecting tube is milled by an end mill. The bone debris generated by milling and the powdered debris in the connecting tube are guided by the chip groove of the end mill and transported to the top of the connecting tube and then discharged. The end mill forms a bone hole after milling the cylindrical bone, which effectively avoids stress concentration in the bone hole during the drilling process.

[0017] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or be understood by implementing the embodiments of the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of the structure of this application; Figure 2 This is a schematic diagram of the internal structure of the connecting tube of the present application; Figure 3 This is a schematic diagram of the guide mechanism connection of this application; Figure 4 This is a schematic diagram of the internal structure of the shell of this application; Figure 5 This is a schematic diagram of the internal structure of the chip collecting bucket of the present application; Figure 6 This is a schematic diagram of the pitch adjustment assembly structure of the present application; Figure 7 This is a schematic diagram of the displacement drive assembly structure of the present application; Figure 8 This is a schematic diagram of the sawtooth ring structure of the present application; Fig. 9 This is a schematic diagram of the transparent telescopic tube connection of the present application; Markings in the figure: housing 1, driving mechanism 2, internal threaded cylinder 21, bearing 22, bevel gear I 23, driving motor 24, bevel gear II 25, connecting cylinder 3, external threaded cylinder 31, abutting ring 32, limiting cylinder 33, guide groove I 34, annular diaphragm 35, serrated ring 4, guide groove II 41, end mill 5, guide mechanism 6, three-degree-of-freedom adjustment device 61, L-shaped support arm 62, worm gear rotating table 63, pitch adjustment component 64, U-shaped connecting plate 641, Slide groove 642, connecting seat 643, sector gear 644, rack 645, handle bolt I 646, handle bolt II 647, displacement drive assembly 65, support plate 651, ball screw I 652, moving seat 653, bevel gear III 654, drive rod 655, bevel gear IV 656, drive hand wheel I 657, chip collecting bucket 7, closed ring plate 71, closed cylinder 72, transparent telescopic tube 8, connecting ring 81, tightening ring 82, spring 83, connecting tube 84. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. 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 similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. At the same time, in the description of the present invention, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0022] like Figure 1-Figure 2 As shown, this embodiment provides a medical orthopedic drilling device, comprising: A housing 1, wherein a driving mechanism 2 is disposed in the housing 1; A connecting tube 3, wherein the connecting tube 3 is drivingly connected to the driving mechanism 2, and a sawtooth ring 4 is fixedly connected to the bottom end of the connecting tube 3, and the sawtooth ring 4 is used to pre-cut a ring groove on the bone; The end mill 5 is connected in the connecting tube 3, the peripheral wall of the end mill 5 is gap-matched with the inner wall of the connecting tube 3, the end face of the end mill 5 is arranged corresponding to the top end of the serrated ring 4, and the end mill 5 is used to mill the cylindrical bone located in the connecting tube 3.

[0023] It can be understood that when drilling a hole in the patient's bone, the shell 1 drives the connecting tube 3 to move to the position on the bone where the hole is to be drilled, and then the driving mechanism 2 is started. The driving mechanism 2 drives the connecting tube 3 to rotate at a high speed, so that the serrated ring 4 at the bottom of the connecting tube 3 rotates at a high speed, and the end mill 5 in the connecting tube 3 rotates at a high speed. Then, the connecting tube 3 is driven to move by the shell 1, and the serrated ring 4 abuts against the bone. The high-speed rotating serrated ring 4 pre-cuts a ring groove on the bone to obtain the required bone hole diameter. The powdered debris generated by the serrated ring 4 cutting the bone enters the connecting tube 3. After the serrated ring 4 continues to descend to cut the bone, the end mill 5 abuts against the cylindrical bone located in the connecting tube 3, and the high-speed rotating end mill 5 is used to mill the cylindrical bone in the connecting tube 3. The bone debris generated by milling and the powdered debris in the connecting tube 3 are removed by the end mill 5. The groove guides the material to the top of the connecting tube 3 and then discharges it. The end mill 5 mills the cylindrical bone to form a bone hole. As the connecting tube 3 continues to penetrate into the bone hole, the serrated ring 4 pre-cuts to form an annular groove at the bottom end of the bone hole, and then the end mill 5 mills the cylindrical bone until the bone hole reaches the required depth. The driving mechanism 2 is then closed and the connecting tube 3 is taken out of the bone hole. In this technical solution, an annular groove is pre-cut on the bone by the serrated ring 4 to obtain the required aperture of the bone hole. The powdery debris generated by the serrated ring 4 cutting the bone enters the connecting tube 3, and then the cylindrical bone in the connecting tube 3 is milled by the end mill 5. The bone debris generated by milling and the powdery debris in the connecting tube 3 are guided by the chip discharge groove of the end mill 5 to the top of the connecting tube 3 and then discharged. The end mill 5 mills the cylindrical bone to form a bone hole, which effectively avoids stress concentration in the bone hole during drilling.

[0024] like Figure 3 As shown, it also includes a guide mechanism 6, and the guide mechanism 6 includes: A three-degree-of-freedom adjustment device 61, wherein the three-degree-of-freedom adjustment device 61 is used for height adjustment, lateral adjustment and longitudinal adjustment, and an L-shaped support arm 62 is connected to the three-degree-of-freedom adjustment device 61; A worm gear rotating platform 63, wherein the worm gear rotating platform 63 is connected to the L-shaped support arm 62; A pitch adjustment component 64, wherein the pitch adjustment component 64 is disposed on the worm gear rotating platform 63; The displacement driving assembly 65 is arranged on the pitch adjustment assembly 64. The housing 1 is in transmission connection with the displacement driving assembly 65. The displacement driving assembly 65 is used to drive the housing 1 to perform horizontal displacement.

[0025] It is understandable that, in the process of drilling holes in the patient's bones, the sawtooth ring 4 and / or the end mill 5 come into contact and cut with the bones, causing the shell 1 to vibrate violently. If the limit applied to the shell 1 is not firm, the sawtooth ring 4 and / or the end mill 5 may come into contact with bones, muscles and nerves other than the drilling site, causing secondary injury to the patient. Therefore, the shell 1 is connected to the displacement drive assembly 65, and the movement of the shell 1 is limited by the displacement drive assembly 65. When drilling holes in the patient's bones, the lateral position and longitudinal position of the L-shaped support arm 62 are adjusted by the three-degree-of-freedom adjustment device 61 to drive the shell 1 to move laterally and longitudinally, and then the directional position of the displacement drive assembly 65 is adjusted by the worm gear rotating table 63. The pitch angle of the displacement drive assembly 65 is adjusted by the pitch adjustment assembly 64, and the height position of the L-shaped support arm 62 is adjusted by the three-degree-of-freedom adjustment device 61, so that the displacement drive assembly 65 is lowered in the set direction position and pitch angle and approaches the bone to be punched, and then the drive mechanism 2 is started, and the drive mechanism 2 drives the connecting tube 3 to rotate at high speed, and then the shell 1 is driven to gradually move horizontally through the displacement drive assembly 65, so that the high-speed rotating serrated ring 4 and the end mill 5 gradually cut the bone at the part to be punched to form a bone hole, and by adjusting the direction position and pitch angle of the displacement drive assembly 65, the serrated ring 4 and the end mill 5 cut the bone to form a bone hole with the required direction and angle on the bone.

[0026] It should be noted that the three-degree-of-freedom adjustment device 61 includes an operating table, a displacement plate is slidably connected to the operating table, a ball screw II is also connected to the operating table, the ball screw II is transmission-connected to the displacement plate, and the screw rod of the ball screw II is connected to a driving hand wheel II; The displacement plate is slidably connected with a displacement seat, and the displacement plate is also connected with a ball screw III, the ball screw III is transmission-connected with the displacement seat, and the screw rod of the ball screw III is connected with a driving hand wheel III; An L-shaped support plate 651 is fixedly connected to the displacement seat, and a support seat is slidably connected to the vertical plate of the L-shaped support plate 651. A ball screw IV is also connected to the vertical plate of the L-shaped support plate 651. The ball screw IV is transmission-connected to the support seat, and the screw rod of the ball screw IV is connected to a driving handwheel IV. The L-shaped support arm 62 is fixedly connected to the support seat.

[0027] like Figure 4-Figure 5 As shown, the driving mechanism 2 comprises: An internal threaded barrel 21, the internal threaded barrel 21 is connected and arranged in the housing 1 through a bearing 22, an external threaded barrel 31 is integrally arranged on the outer wall of the connecting barrel 3, the external threaded barrel 31 is threadedly connected in the internal threaded barrel 21, the external threaded barrel 31 is also integrally provided with abutment ring 32, the abutment ring 32 abuts against the internal threaded barrel 21, and a bevel gear I 23 is also connected to the outer wall of the internal threaded barrel 21; The driving motor 24 is connected to the housing 1 , and the driving motor 24 is connected to a bevel gear II 25 , and the bevel gear II 25 is meshed with the bevel gear I 23 .

[0028] It can be understood that after the end mill 5 is connected to the connecting tube 3, the external threaded tube 31 is screwed into the internal threaded tube 21 clockwise through the right-hand thread for threaded connection until the abutment ring 32 abuts against the internal threaded tube 21; when drilling the patient's bone, the drive motor 24 is started and drives the bevel gear II 25 to rotate clockwise, and the bevel gear II 25 drives the bevel gear I 23 to rotate counterclockwise, so that the internal threaded tube 21 drives the external threaded tube 31 to rotate counterclockwise at high speed, and the connecting tube 3 drives the serrated ring 4 and the end mill 5 to cut the bone. In the process of cutting the bone, the threaded connection between the external threaded tube 31 and the internal threaded tube 21 is tightened through the right-hand thread of the external threaded tube 31 and the counterclockwise rotation of the internal threaded tube 21, and the abutment ring 32 is tightly abutted against the internal threaded tube 21 to ensure the stability of the connection.

[0029] like Figure 2 As shown, the shank of the end mill 5 is configured as a threaded shank, a limiting cylinder 33 is fixedly connected inside the connecting cylinder 3, the threaded shank is threadedly connected inside the limiting cylinder 33, a plurality of guide grooves Ⅰ34 are provided on the outer wall of the limiting cylinder 33, and the guide grooves Ⅰ34 are connected to the chip removal grooves of the end mill 5.

[0030] It is understandable that after the end mill 5 mills the bone, it needs to be removed from the connecting tube 3 for cleaning and disinfection; therefore, the shank of the end mill 5 is set as a threaded shank and fixedly connected to the limiting tube 33 in the connecting tube 3. The threaded shank is screwed into the limiting tube 33 clockwise through a right-hand thread for threaded connection. The threaded connection facilitates the installation or disassembly of the end mill 5, and after the end mill 5 abuts against the bone, the connection between the threaded shank and the limiting tube 33 is tightened by counterclockwise rotation of the connecting tube 3. The bone chips and powdered chips generated by the end mill 5 when milling the cylindrical bone are transported into the multiple guide grooves Ⅰ34 opened on the outer wall of the limiting tube 33 through the cooperation of the chip discharge groove of the end mill 5 and the inner wall of the connecting tube 3, and then the multiple guide grooves Ⅰ34 guide the bone chips and powdered chips to the top of the connecting tube 3 and then discharge them.

[0031] like Figure 5As shown, a chip collecting bucket 7 is also provided in the shell 1, and a closed ring plate 71 is fixedly connected to the top of the chip collecting bucket 7, and a closed cylinder 72 is connected to the closed ring plate 71. The closed cylinder 72 is located in the chip collecting bucket 7, and the top of the connecting cylinder 3 is passed through the closed cylinder 72. An annular diaphragm 35 is fixedly connected to the outer side of the top end of the connecting cylinder 3, and the annular diaphragm 35 is located in the chip collecting bucket 7. The outer diameter of the annular diaphragm 35 is larger than the outer diameter of the closed cylinder 72.

[0032] It can be understood that the top of the connecting tube 3 is passed through the closed tube 72, and the closed tube 72 does not affect the rotation of the connecting tube 3. After the bone chips and powdered chips are discharged from the top of the connecting tube 3, they enter the chip collecting bucket 7. The cooperation between the closed ring plate 71 and the closed tube 72 prevents the bone chips and powdered chips from leaking out of the chip collecting bucket 7. The connecting ring 81-shaped diaphragm 35 is fixed on the outer side of the top end of the connecting tube 3. The outer diameter of the annular diaphragm 35 is larger than the outer diameter of the closed tube 72, so that after the bone chips and powdered chips are discharged from the top of the connecting tube 3, they cannot leak out from the gap between the connecting tube 3 and the closed tube 72.

[0033] like Figure 6 As shown, the pitch adjustment assembly 64 includes: A U-shaped connecting plate 641, wherein the U-shaped connecting plate 641 is connected to the worm gear rotating platform 63, and a sliding groove 642 is formed at the inner bottom end of the U-shaped connecting plate 641; A connecting seat 643, a sector gear 644 is integrally provided at the bottom end of the connecting seat 643, the middle position of the sector gear 644 is hinged to the U-shaped connecting plate 641, and the displacement driving assembly 65 is provided on the connecting seat 643; The rack 645 is slidably connected in the slide groove 642, one side of the U-shaped connecting plate 641 is threadedly connected with a handle bolt I 646, and the other side of the U-shaped connecting plate 641 is threadedly connected with a handle bolt II 647, the end of the handle bolt I 646 abuts against one end of the rack 645, and the end of the handle bolt II 647 abuts against the other end of the rack 645.

[0034] It can be understood that when adjusting the pitch angle of the displacement drive assembly 65, the handle bolt I 646 is loosened and the handle bolt II 647 is tightened, so that the handle bolt II 647 pushes the rack 645 to slide in the slide groove 642 and then abuts against the handle bolt I 646, or the handle bolt II 647 is loosened and the handle bolt II 646 is tightened, so that the handle bolt I 646 pushes the rack 645 to slide in the slide groove 642 and then abuts against the handle bolt II 647. During the sliding process of the rack 645 in the slide groove 642, the rack 645 drives the connecting seat 643 to perform pitch deflection in the U-shaped connecting plate 641 through the fan gear 644, thereby adjusting the pitch angle of the displacement drive assembly 65 on the connecting seat 643.

[0035] like Figure 7 As shown, the displacement driving assembly 65 includes: A support plate 651, wherein the support plate 651 is fixedly connected to the pitch adjustment assembly 64; A ball screw I 652, wherein the ball screw I 652 is connected to the support plate 651, the ball screw I 652 is drivingly connected to a moving seat 653, the moving seat 653 is slidably connected to the support plate 651, the housing 1 is connected to the moving seat 653, and the screw of the ball screw I 652 is connected to a bevel gear III 654; A driving rod 655 is rotatably connected to the support plate 651 , one end of the driving rod 655 is connected to a bevel gear IV 656 , the bevel gear IV 656 is meshed with the bevel gear III 654 , and the other end of the driving rod 655 is connected to a driving hand wheel I 657 .

[0036] It can be understood that after the height position, lateral position and longitudinal position of the three-degree-of-freedom adjustment device 61 are adjusted to the right position, and the worm gear rotating table 63 adjusts the direction position of the displacement drive assembly 65 to the right position, and the pitch adjustment assembly 64 adjusts the pitch angle of the displacement drive assembly 65 to the right position, the medical staff rotates the driving hand wheel I657 counterclockwise, so that the bevel gear IV656 drives the bevel gear III654 to rotate clockwise, and the bevel gear III654 drives the screw of the ball screw I652 to rotate clockwise, so that the ball screw I652 drives the moving seat 653 to drive the shell 1 to slide toward the end of the support plate 651, so that the serrated ring 4 abuts against the bone. An annular groove is formed by cutting. As the medical staff continues to rotate the driving hand wheel Ⅰ657 counterclockwise, the end mill 5 comes into contact with the cylindrical bone in the connecting tube 3. The end mill 5 rotates at high speed to mill the cylindrical bone in the connecting tube 3 to form a bone hole. According to the required depth of the bone hole, the driving hand wheel Ⅰ657 is continued to be rotated counterclockwise, so that the serrated ring 4 cooperates with the end mill 5 to deepen the depth of the bone hole. After the required depth of the bone hole is reached, the driving mechanism 2 is closed and the driving hand wheel Ⅰ657 is rotated clockwise. The ball screw Ⅰ652 drives the moving seat 653 to drive the shell 1 to slide toward the head end of the support plate 651, and the connecting tube 3 slides out of the bone hole.

[0037] like Figure 8 As shown, the outer diameter of the serrated ring 4 is greater than the outer diameter of the connecting tube 3 , and a plurality of guide grooves II41 are provided on the inner wall of the serrated ring 4 , and the guide grooves II41 are used to guide the debris generated by the serrated ring 4 cutting bones into the connecting tube 3 .

[0038] It can be understood that by setting the outer diameter of the serrated ring 4 to be larger than the outer diameter of the connecting tube 3, during the process of the serrated ring 4 cutting the bone, the outer wall of the connecting tube 3 will not rub against the inner wall of the bone hole to generate heat, thereby ensuring the cutting performance of the serrated ring 4 and avoiding high temperature damage to bone cells caused by the friction of the connecting tube 3; and by opening a plurality of guide grooves Ⅱ41 on the inner wall of the serrated ring 4, the powdered debris generated by the serrated ring 4 when cutting the bone is guided, so that the powdered debris generated by the serrated ring 4 when cutting the bone enters the connecting tube 3, so that the powdered debris and bone chips generated by milling can be discharged in a concentrated manner.

[0039] like Fig. 9 As shown, it also includes a transparent telescopic tube 8, one end of which is fixedly connected to a connecting ring 81, and the other end of which is fixedly connected to a tightening ring 82, the connecting ring 81 is connected to the shell 1, the connecting tube 3 is passed through the transparent telescopic tube 8, and a spring 83 is also connected between the connecting ring 81 and the tightening ring 82, the spring 83 is used to support the expansion of the transparent telescopic tube 8, and the inner bottom end of the tightening ring 82 is integrally provided with a collecting ring piece, and the collecting ring piece is used to collect the debris generated by the serrated ring 4 when cutting bones.

[0040] It can be understood that when the sawtooth ring 4 initially abuts against the bone for cutting, the powdery debris generated by the sawtooth ring 4 cutting the bone will splash into the wound, and the debris left inside the wound is difficult to clean; therefore, the connecting tube 3 is inserted into the transparent telescopic tube 8, one end of the transparent telescopic tube 8 is connected to the shell 1 through the connecting ring 81, and the other end of the transparent telescopic tube 8 abuts against the bone at the part to be punched through the tightening ring 82; when punching, the tightening ring 82 is abutted against the bone at the part to be punched, and when the shell 1 is lowered, the connecting ring 81 cooperates with the abutting ring 82 to prevent the hole from being drilled. The tightening ring 82 squeezes the spring 83 to contract, and the length of the transparent telescopic tube 8 is shortened. The elasticity of the spring 83 after contraction makes the tightening ring 82 tightly abut against the bone at the site to be punched, and a closed space is formed between the transparent telescopic tube 8 and the bone at the site to be punched. When the serrated ring 4 cuts the bone, the powdery debris generated will splash into the transparent telescopic tube 8, and the debris generated by the serrated ring 4 cutting the bone will be collected by the collecting ring sheet, so that after the punching is completed, the powdery debris generated is located on the collecting ring sheet, thereby avoiding debris remaining inside the wound.

[0041] like Fig. 9 As shown, the connecting ring 81 is connected to a connecting pipe 84, and the connecting pipe 84 is used to connect a gas delivery device to inject cooling gas into the transparent telescopic tube 8. The connecting tube 3 is configured as a medical aluminum alloy connecting tube, and the medical aluminum alloy connecting tube is used to conduct and dissipate the heat generated by the cutting of the serrated ring 4.

[0042] It is understandable that the serrated ring 4 generates heat when cutting the bone, and the high temperature generated by the serrated ring 4 will cause damage to the bone cells; therefore, a connecting tube 84 is connected to the connecting ring 81. When the abutting ring 32 is tightly abutted against the bone at the part to be punched, and a closed space is formed between the transparent telescopic tube 8 and the bone at the part to be punched, the gas delivery device is connected through the connecting tube 84, and cooling gas is injected into the transparent telescopic tube 8. After the cooling gas enters the transparent telescopic tube 8, it flows to the serrated ring 4 through the gap between the bone hole and the connecting tube 3. The serrated ring 4 is cooled by the introduced cooling gas to avoid the serrated ring 4 from generating high temperature during the cutting process, and the connecting tube 3 is set as a medical aluminum alloy connecting tube, which is used to conduct and dissipate the heat generated by the cutting of the serrated ring 4 and the heat generated by the milling of the end mill 5. After the cooling gas enters the transparent telescopic tube 8, the aluminum alloy connecting tube is cooled and dissipated, thereby avoiding the generation of high temperature to damage the bone cells.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0044] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A medical orthopedic drilling device, characterized in that: include: A housing, wherein a driving mechanism is disposed in the housing; A connecting tube, the connecting tube is drivingly connected to the driving mechanism, a sawtooth ring is fixedly connected to the bottom end of the connecting tube, and the sawtooth ring is used to pre-cut a ring groove on the bone; An end mill is connected in the connecting tube, the peripheral wall of the end mill is gap-matched with the inner wall of the connecting tube, the end face of the end mill is arranged corresponding to the top end of the serrated ring, and the end mill is used to mill the cylindrical bone located in the connecting tube.

2. The medical orthopedic drilling device according to claim 1, characterized in that: Also included is a guiding mechanism, the guiding mechanism comprising: A three-degree-of-freedom adjustment device, the three-degree-of-freedom adjustment device is used for height adjustment, lateral adjustment and longitudinal adjustment, and the three-degree-of-freedom adjustment device is connected to an L-shaped support arm; A worm gear rotating platform, wherein the worm gear rotating platform is connected to the L-shaped support arm; A pitch adjustment assembly, the pitch adjustment assembly being arranged on the worm gear rotating platform; A displacement drive assembly, wherein the displacement drive assembly is arranged on the pitch adjustment assembly, the shell is transmission-connected to the displacement drive assembly, and the displacement drive assembly is used to drive the shell to perform horizontal displacement.

3. The medical orthopedic drilling device according to claim 1, characterized in that: The driving mechanism comprises: An internal threaded barrel, the internal threaded barrel is connected and arranged in the housing through a bearing, an external threaded barrel is integrally arranged on the outer wall of the connecting barrel, the external threaded barrel is threadedly connected in the internal threaded barrel, the external threaded barrel is also integrally arranged with abutment ring, the abutment ring abuts against the internal threaded barrel, and a bevel gear I is also connected to the outer wall of the internal threaded barrel; A driving motor is connected and arranged on the housing, and the driving motor is connected to a bevel gear II, and the bevel gear II is meshed with the bevel gear I.

4. The medical orthopedic drilling device according to claim 1, characterized in that: The shank of the end mill is set as a threaded shank, a limiting cylinder is fixedly connected in the connecting cylinder, the threaded shank is threadedly connected in the limiting cylinder, a plurality of guide grooves I are opened on the outer wall of the limiting cylinder, and the guide grooves I are connected to the chip removal grooves of the end mill.

5. The medical orthopedic drilling device according to claim 1, characterized in that: A chip collecting bucket is also provided in the shell body, and a closed ring plate is fixedly connected to the top of the chip collecting bucket, and a closed cylinder is connected to the closed ring plate. The closed cylinder is located in the chip collecting bucket, and the top of the connecting cylinder is passed through the closed cylinder. An annular diaphragm is fixedly connected to the outer side of the top end of the connecting cylinder, and the annular diaphragm is located in the chip collecting bucket. The outer diameter of the annular diaphragm is larger than the outer diameter of the closed cylinder.

6. The medical orthopedic drilling device according to claim 2, characterized in that: The pitch adjustment assembly comprises: A U-shaped connecting plate, the U-shaped connecting plate is connected to the worm gear rotating platform, and a sliding groove is provided at the inner bottom end of the U-shaped connecting plate; A connecting seat, wherein a sector gear is integrally provided at the bottom end of the connecting seat, the middle position of the sector gear is hinged to the U-shaped connecting plate, and the displacement driving assembly is arranged on the connecting seat; A rack is slidably connected in the slide groove, one side of the U-shaped connecting plate is threadedly connected with a handle bolt I, the other side of the U-shaped connecting plate is threadedly connected with a handle bolt II, the end of the handle bolt I abuts against one end of the rack, and the end of the handle bolt II abuts against the other end of the rack.

7. The medical orthopedic drilling device according to claim 2, characterized in that: The displacement drive assembly comprises: A support plate, the support plate being fixedly connected to the pitch adjustment assembly; A ball screw I, wherein the ball screw I is connected to the support plate, the ball screw I is drivingly connected to a moving seat, the moving seat is slidably connected to the support plate, the housing is connected to the moving seat, and the screw of the ball screw I is connected to a bevel gear III; A driving rod, the driving rod is rotatably connected to the support plate, one end of the driving rod is connected to a bevel gear IV, the bevel gear IV is meshed with the bevel gear III, and the other end of the driving rod is connected to a driving hand wheel I.

8. The medical orthopedic drilling device according to claim 1, characterized in that: The outer diameter of the serrated ring is greater than the outer diameter of the connecting tube. A plurality of guide grooves II are provided on the inner wall of the serrated ring. The guide grooves II are used to guide the debris generated by the serrated ring cutting bones into the connecting tube.

9. The medical orthopedic drilling device according to claim 1, characterized in that: It also includes a transparent telescopic tube, one end of which is fixedly connected to a connecting ring, the other end of which is fixedly connected to a tightening ring, the connecting ring is connected to the shell, the connecting tube is passed through the transparent telescopic tube, a spring is connected between the connecting ring and the tightening ring, the spring is used to support the expansion of the transparent telescopic tube, and a collecting ring piece is integrally provided at the inner bottom end of the tightening ring, the collecting ring piece is used to collect debris generated by the serrated ring when cutting bones.

10. The medical orthopedic drilling device according to claim 9, characterized in that: The connecting ring is connected with a connecting pipe, which is used to connect to a gas delivery device to inject cooling gas into the transparent telescopic tube. The connecting tube is a medical aluminum alloy connecting tube, which is used to conduct and dissipate the heat generated by the sawtooth ring cutting.

Images