Surgical bur head

Abstract

The application discloses a grinding head for surgery, which comprises a grinding head, a damping support assembly and a handle assembly. The grinding head is provided with a grinding handle at one end. The damping support assembly comprises an outer tube which is sleeved on a shell. A damping sleeve is arranged on the outer tube. A damping mechanism is arranged on the damping sleeve. The grinding handle penetrates through the corresponding position of the damping sleeve and extends into the shell to be connected with the output end of a power motor. The shell is sleeved and fixed with the corresponding position of the handle assembly. A cavity groove is arranged in the damping support assembly. A cooling water channel which is communicated with the cavity groove is arranged on the handle assembly. The grinding head is introduced with cooling water by the cooling water channel and the cavity groove. The vibration generated in the rotating process of the grinding head is reduced by the abutting form of the elastic sheet in the outer tube, so that the smooth grinding is achieved. The structure is simple and compact, and the operation is convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a surgical grinding head. BACKGROUND

[0002] At present, in the orthopedic surgery of surgical operation, the grinding head is often used to grind the surgical position of the bone. However, the rotating speed of the traditional grinding head driven by the motor is not high, the efficiency is low, the operation time is increased, the grinding head is greatly worn, and the service life of the grinding assembly is affected. However, the grinding drill with high rotating speed has large jumping during rotation, that is, the vibration during grinding is strong. For the operator, the hand is easily vibrated, and for the precision and accuracy required by the operation, this point easily affects the quality and safety of the operation. SUMMARY

[0003] In view of the above problems of the prior art, the technical problem to be solved by the present application is to provide a surgical grinding head which can cool the grinding head and ensure the stability of the grinding head.

[0004] The technical scheme of the present application is as follows:

[0005] A surgical grinding head, comprising a grinding head, a vibration reduction support assembly and a handle assembly, wherein one end of the grinding head is provided with a grinding handle, the vibration reduction support assembly comprises an outer tube sleeved on an outer shell, a vibration reduction sleeve is arranged on the outer tube, and a vibration reduction mechanism is arranged on the vibration reduction sleeve, the vibration reduction support assembly comprises an outer tube sleeved on an outer shell, a spring tube is sleeved on one end of the outer tube, an opening is arranged on one side of the spring tube, and an integrally formed spring is connected in the opening; a plastic tube sleeved on the outer side of the grinding handle is fixedly arranged in the spring tube, a notch is arranged on the plastic tube corresponding to the position of the spring, and the non-connected end of the spring is obliquely inserted into the notch and abuts against the outer side wall of the grinding handle.

[0006] The grinding handle is arranged through the corresponding position of the vibration reduction sleeve and extends into the outer shell and is connected with the output end of the power motor; the outer shell is fixedly sleeved with the handle assembly at the corresponding position, a cavity groove is arranged in the vibration reduction support assembly, and a cooling water channel in communication with the cavity groove is arranged on the handle assembly; during use, the cooling water flows to the grinding head through the cooling water channel and the cavity groove to achieve the purpose of cooling, and the vibration reduction mechanism reduces the vibration generated by the grinding head during movement to achieve the purpose of rapid and stable grinding.

[0007] With the above structure, the grinding head is arranged in the outer tube and connected with the output end of the motor, and the corresponding position of the damping support assembly is sleeved with the shell, so that the connection between the grinding head and the power motor is not affected by the outside world; the damping support assembly reduces the vibration generated by the grinding head during rotation, so as to meet the purpose of smooth grinding; meanwhile, the cavity groove and the cooling water channel can take away the heat generated by the rotation of the grinding handle and cool the position of the grinding head, so as to improve the processing effect of bone tissue grinding or repair, the wound recovers faster, and the structure is simple, compact and convenient to operate.

[0008] In order to support the grinding handle and form a channel for the cooling water to flow through, preferably, an inner tube connected with the speed changing device is sleeved with the other end of the outer tube, a first connecting sleeve and a supporting sleeve fixedly sleeved with the outer tube are arranged between the elastic sheet tube and the inner tube from front to back, one end of the plastic tube is sleeved with the first connecting sleeve, and a gap is formed between the inner side wall of the plastic tube and the outer side wall of the grinding handle, which is communicated with the middle part of the first connecting sleeve, the middle parts of the first connecting sleeve and the supporting sleeve are communicated with each other, a first mounting sleeve is sleeved with one end of the inner tube, and a second mounting sleeve is sleeved with the other end of the inner tube, a guide tube is abuttingly arranged between the supporting sleeve and the first mounting sleeve, the grinding handle is sequentially arranged through the plastic tube, the first connecting sleeve, the supporting sleeve, the guide tube, the first mounting sleeve, the second mounting sleeve and the inner tube from front to back, and is connected with the corresponding position of the speed changing device; a first plane section is arranged on one side of the inner tube, a second plane section is arranged on one side of the guide tube, and the first plane section and the second plane section are enclosed with the inner side wall of the outer tube to form a cavity groove, and the cavity groove is communicated with the middle part of the supporting sleeve.

[0009] In order to prevent the grinding handle from falling out after being broken, preferably, a limiting ring is fixedly sleeved with the outer wall of the grinding handle at the position corresponding to the supporting sleeve, and the outer diameter of the limiting ring is larger than the inner diameter of the connecting sleeve.

[0010] In order to facilitate the introduction of cooling water, preferably, a connecting through hole is arranged on one side of the shell and sleeved with the outer side wall of the outer tube, and a mounting hole is arranged on the other side of the shell, the connecting through hole is communicated with the cavity groove; the handle assembly comprises a water cooling sleeve provided with a water guide groove and sleeved with the shell, a second connecting sleeve is arranged in the water cooling sleeve, and a speed changing device is arranged on the second connecting sleeve; a pressing sleeve is sleeved with the outer side of the water cooling sleeve, a groove is arranged on the outer wall of the water cooling sleeve, a cooling water channel communicated with the water guide groove is enclosed by the inner side wall of the pressing sleeve and the groove, an opening communicated with the connecting through hole is arranged at one end of the cooling water channel, a water outlet hole is arranged on the shell at the position corresponding to the opening, and the inner side wall of the pressing sleeve and the water guide groove form a water injection hole.

[0011] In order to facilitate installation and simplify structure, preferably, a positioning groove is arranged on the outer side wall of the shell, and a limiting ring table is arranged on the pressing sleeve at the position corresponding to the positioning groove, and the limiting ring table is buckled in the positioning groove.

[0012] In order to facilitate installation and simplify structure, preferably, the transmission device comprises a transition sleeve sleeved in the connecting through hole, one end of the transition sleeve is sleeved and fixed with the outer wall of the inner tube, the other end of the transition sleeve is sleeved with a mounting sleeve, a support pipe is sleeved on the mounting sleeve, a transmission tooth is sleeved on the support pipe, the grinding handle is inserted into the shell through the second mounting sleeve, and the inserted end of the grinding handle is inserted into the transition sleeve and passes through the support pipe.

[0013] In order to facilitate installation, preferably, a connecting hole is arranged in the water cooling jacket, the transmission device further comprises a second connecting sleeve fixedly arranged in the connecting hole, a guide hole is arranged on the second connecting sleeve, a guide sleeve is arranged in the guide hole, a transmission shaft connected with the output end of the power motor is arranged on the guide sleeve, and the other end of the transmission shaft is sleeved with a driving tooth meshed and connected with the transmission tooth.

[0014] In order to reduce the jumping amplitude of rotation and ensure the stability of rotation, preferably, one end of the transmission shaft sleeved with the driving tooth protrudes from the driving tooth and is inserted into the mounting hole.

[0015] Beneficial effects: the cooling water channel and the cavity groove are used to introduce cooling water to the grinding head, and the elastic sheet is used to reduce the vibration of the grinding head in the rotating process in the abutting form, so that the purpose of stable grinding is achieved, the structure is simple and compact, and the operation is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural explosion diagram of the application.

[0017] Figure 2 It is a schematic diagram of the installation structure of the application.

[0018] Figure 3 It is Figure 2 the enlarged view of A in the figure.

[0019] Figure 4 It is Figure 2 the enlarged view of B in the figure.

[0020] Figure 5 It is Figure 2 the enlarged view of C in the figure.

[0021] Figure 6 It is a schematic diagram of the installation structure of the elastic sheet pipe and the spring pipe.

[0022] Figure 7 It is a schematic diagram of the structure of the shell.

[0023] Figure 8 Structure diagram of water cooling jacket.

[0024] Figure 9 Structure diagram of pressure jacket.

[0025] Figure 10 Structure diagram of the invention.

[0026] The meaning of each reference sign in the drawing is as follows:

[0027] Grinding head-1; grinding handle-10; outer tube-2; elastic sheet-20; water outlet hole-201; elastic sheet tube-21; plastic tube-211; inner tube-22; first flat section-221; first mounting sleeve-221; second mounting sleeve-222; support sleeve-23; guide tube-24; second flat section-241; first connecting sleeve-25;

[0028] Housing-3; cavity groove-30; support tube-31; mounting hole-312; transition sleeve-32; mounting sleeve-321; transmission teeth-33; positioning groove-34; water outlet hole-35; limiting ring-4;

[0029] Water cooling jacket-5; opening-50; water guide groove-51; recess-52; connecting hole-53; second connecting sleeve-54; guide sleeve-55; pressure jacket-6; limiting ring platform-60; transmission shaft-61; driving teeth-62. DETAILED DESCRIPTION

[0030] The invention will be further described below in conjunction with the drawings.

[0031] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 , the invention comprises a grinding head 1, a damping support assembly and a handle assembly, the grinding head 1 is provided with a grinding handle 10 at one end, the damping support assembly is provided with a housing 3, the grinding handle 10 penetrates through the corresponding position of the damping support assembly and extends into the housing 3, the housing 3 is fixedly connected with the corresponding position of the handle assembly, the handle assembly is provided with a second connecting sleeve 54, a speed changing device is arranged on the second connecting sleeve 54, the extending end of the grinding handle 10 extends into the housing 3 and is connected with the corresponding position of the speed changing device, and the corresponding position of the speed changing device is further connected with the output end of the motor; during use, the speed changing device increases the rotating speed of the grinding handle 10, and the damping support assembly reduces the vibration generated by the grinding head 1 during movement, so as to achieve the purpose of fast and smooth grinding by the low rotating speed motor.

[0032] Specifically, the damping support assembly comprises an outer tube 2 sleeved on the outer shell 3, a spring tube 21 sleeved on one end of the outer tube 2, an inner tube 22 sleeved on the other end of the outer tube 2 and connected with the gear shifting device, an opening is arranged on one side of the spring tube 21, and an integrally formed spring 20 is connected in the opening; a plastic tube 211 is fixedly arranged in the spring tube 21 and sleeved on the outer side of the grinding handle 10, and the non-connected end of the spring 20 is arranged obliquely and abuts against the outer side wall of the plastic tube 211.

[0033] A first connecting sleeve 25 and a support sleeve 23 are sequentially arranged between the spring tube 21 and the inner tube 22 and are fixedly sleeved in the outer tube 2, one end of the plastic tube 211 is sleeved with the first connecting sleeve 25, there is a gap between the inner side wall of the plastic tube 211 and the outer side wall of the grinding handle 10, the gap is communicated with the middle part of the connecting sleeve 25, the middle parts of the first connecting sleeve 25 and the support sleeve 23 are communicated with each other, a first mounting sleeve 221 is sleeved on one end of the inner tube 22, and a second mounting sleeve 222 is sleeved on the other end of the inner tube 22, a guide tube 24 is arranged in abutting limiting mode between the support sleeve 23 and the first mounting sleeve 221, the grinding handle 10 is sequentially arranged through the plastic tube 211, the first connecting sleeve 25, the support sleeve 23, the guide tube 24, the first mounting sleeve 221, the second mounting sleeve 222 and the inner tube 22 from front to back, and is connected with the corresponding positions of the gear shifting device; a first plane section 221 is arranged on one side of the inner tube 22, a second plane section 241 is arranged on one side of the guide tube 24, the first plane section 221 and the second plane section 241 and the inner side wall of the outer tube 2 jointly form a cavity groove 30, and the cavity groove 30 is communicated with the middle part of the support sleeve 23.

[0034] A limiting ring 4 is fixedly sleeved on the outer wall of the grinding handle 10 at the position corresponding to the support sleeve 23, and the outer diameter of the limiting ring 4 is larger than the inner diameter of the connecting sleeve 25.

[0035] A connecting through hole is arranged on one side of the outer shell 3 and is sleeved on the outer side wall of the outer tube 2, and a mounting hole 312 is arranged on the other side of the outer shell 3, the connecting through hole is communicated with the cavity groove 30; the handle assembly comprises a water cooling sleeve 5 provided with a water guide groove 51 and sleeved on the outer shell 3, a pressing sleeve 6 is sleeved on the outer side of the water cooling sleeve 5, a recess 52 is arranged on the outer wall of the water cooling sleeve 5, a cooling water channel communicated with the water guide groove 51 is jointly formed between the inner side wall of the pressing sleeve 6 and the recess 52, an opening 50 communicated with the connecting through hole is arranged on one end of the cooling water channel, a water outlet hole 35 is arranged on the outer shell 3 at the position corresponding to the opening 50, and the inner side wall of the pressing sleeve 6 and the water guide groove 51 jointly form a water injection hole; a positioning groove 34 is arranged on the outer side wall of the outer shell 3, a limiting ring table 60 is arranged on the pressing sleeve 6 at the position corresponding to the positioning groove 34, and the limiting ring table 60 is buckled in the positioning groove 34.

[0036] The variable speed device comprises a transition sleeve 32 sleeved in the connecting through hole, one end of the transition sleeve 32 is sleeved and fixed with the outer wall of the inner tube 22, the other end is sleeved with a mounting sleeve 321, a supporting tube 31 is sleeved on the mounting sleeve 321, a transmission tooth 33 is sleeved on the supporting tube 31, the grinding handle 10 is threaded through the second mounting sleeve 222 and extends into the shell 3, the extending end of the grinding handle 10 extends into the transition sleeve 32 and is threaded out of the supporting tube 31.

[0037] A connecting hole 53 is arranged in the water cooling jacket 5, the variable speed device further comprises a second connecting sleeve 54 fixed in the connecting hole 53, a guide hole is arranged on the second connecting sleeve 54, a guide sleeve 55 is arranged in the guide hole, a transmission shaft 61 connected with the output end of the power motor is threaded on the guide sleeve 55, the other end of the transmission shaft 61 is sleeved with a driving tooth 62 engaged with the transmission tooth 33; the end of the transmission shaft 61 sleeved with the driving tooth 62 protrudes out of the driving tooth 62 and extends into the mounting hole 312.

[0038] A water outlet hole 201 is arranged on one side of the outer tube 2.

[0039] The use method of the present application is as follows:

[0040] As Figure 1 , Figure 2 , Figure 3 and Figure 5 shown, the grinding handle 10 is threaded through the outer tube 2 and the shell 3 and is sleeved with the transmission tooth 33, the transmission tooth 33 is engaged with the driving tooth 62 connected on the transmission shaft 61, the transmission shaft 61 is in the guide sleeve 55 and is connected with the output end of the power motor, therefore, the connection of the grinding head 1 with the power motor will not be affected by the outside world; at the same time, the low-speed power motor can also improve the rotating speed of the grinding handle 10 by the gear ratio of the driving wheel 62 and the transmission tooth 33 (the gear ratio of the driving tooth 62 and the transmission tooth 63 is 1:1.3~2, preferably 1:2), realizing the rapid rotation of the output end, that is, the low-speed power motor drives the grinding head 1 to rotate rapidly, thereby saving the cost of the motor, shortening the operation time, and the wound of the bone tissue grinding position is neat and stable, which can improve the processing effect of bone tissue grinding or repair, and the wound recovers faster.

[0041] In addition, as Figures 2 to 9As shown, the cooling water in surgery is injected from the water injection hole position formed by the inner side wall of the pressure sleeve 6 and the water guide groove 51, then flows through the cooling water channel formed by the inner side wall of the pressure sleeve 6 and the groove 52, and finally flows into the cavity groove 30 formed between the first plane section 221 and the second plane section 241 and the inner side wall of the outer tube 2 through the opening 50, the water outlet hole 35 and the connecting through hole on the shell 3, and is discharged to the position of the grinding head 1 through the gap between the inner side wall of the plastic tube 211 and the outer side wall of the grinding handle 10. The heat generated by the gear transmission and the rotation of the grinding handle 10 and the transmission shaft 61 can be brought out, so as to ensure the stability of the rotation of the grinding head 1.

[0042] In this process, since the grinding handle 10 has a certain length, and the grinding head 1 and the transmission teeth 33 are respectively arranged at the two ends of the grinding handle 10, and in order to facilitate assembly, there is a gap between the inner side wall of the plastic tube 211 and the outer side wall of the grinding handle 10, that is, the middle part of the grinding handle 10 forms an upward convex arch shape. When the grinding handle 10 rotates, the jumping of the middle part of the grinding handle 10 is inevitably large, which also affects the jumping trend of the rotation of the grinding head 1, and has a certain influence on surgical grinding. In order to reduce the jumping trend, the elastic sheet 20 is integrally formed on the elastic sheet tube 21 and abuts against the outer side wall of the plastic tube 211. The elastic sheet 20 is arranged obliquely and presses the plastic tube 211, so that the inner side wall of the plastic tube 211 abuts against the outer side wall of the grinding handle 10. When the grinding handle 10 rotates, the elastic sheet 20 abuts against the grinding handle 10 due to the deformation of the plastic tube 211 caused by the pressure on the tube wall. The jumping space of the grinding handle 10 is limited, that is, the jumping amplitude is reduced, and the rotation of the grinding head 1 tends to be stable.

[0043] In addition, as shown in Figure 3 If the middle part of the grinding handle 10 is broken, the grinding handle 10 sleeved with the limiting ring 4 will not fall out of the outer tube 2 because the outer diameter of the limiting ring 4 is larger than the inner diameter of the first connecting sleeve 25.

[0044] In order to ensure the sealing, the inner tube 22 and the guide tube 24 are in abutting position, the sleeve connection between the transition sleeve 32 and the inner tube 22 is a tight fit, and the sleeve connection positions between the shell 3 and the outer tube 2 and the sleeve connection positions between the transition sleeve 32 and the shell 3 are all glued to prevent the cooling water from leaking. This not only improves the surgical environment, but also reduces the influence on the flushing and cooling effect of the grinding head 1 position. As shown in Figure 2 and Figure 10 A water outlet hole 201 is arranged on one side of the outer tube 2. When water leaks from the abutting position between the inner tube 22 and the guide tube 24, the leaked water drips out of the lower end of the outer tube 2 through the water outlet hole 201, which can be discovered by the operator in time.

Claims

1. An abrasive tip for surgical use, characterized by: The application relates to a grinding head (1), a damping support assembly and a handle assembly, wherein the grinding head (1) is provided with a grinding handle (10) at one end; the damping support assembly comprises an outer pipe (2) sleeved on a shell (3), a damping sleeve pipe is arranged on the outer pipe (2), a damping mechanism is arranged on the damping sleeve pipe, the damping sleeve pipe comprises a spring pipe (21) sleeved at one end in the outer pipe (2), and a plastic pipe (211) sleeved on the outer side of the grinding handle (10) is fixedly arranged in the spring pipe (21); the damping mechanism comprises an opening arranged on one side of the spring pipe (21), and an integrally-formed spring (20) is connected in the opening; the non-connection end of the spring (20) is arranged obliquely and abuts against the outer side wall of the plastic pipe (211). The grinding handle (10) penetrates through the corresponding position of the damping sleeve pipe and extends into the shell (3) to be connected with the output end of a power motor; the shell (3) is fixedly sleeved with the corresponding position of the handle assembly, a cavity groove (30) is arranged in the damping support assembly, and a cooling water channel is arranged on the handle assembly and communicates with the cavity groove (30); during use, cooling water flows to the grinding head through the cooling water channel and the cavity groove (30) to achieve the purpose of cooling; and the damping mechanism reduces the vibration generated by the grinding head (1) during movement to achieve the purpose of fast and smooth grinding.

2. The surgical bur head of claim 1, wherein: An inner pipe (22) connected with a speed changing device is sleeved at the other end of the outer pipe (2); a first connecting sleeve (25) and a supporting sleeve (23) fixedly sleeved in the outer pipe (2) are arranged in sequence from front to back between the spring pipe (21) and the inner pipe (22); one end of the plastic pipe (211) is sleeved with the first connecting sleeve (25), and a gap exists between the inner side wall of the plastic pipe (211) and the outer side wall of the grinding handle (10), the gap communicates with the middle part of the first connecting sleeve (25), the middle parts of the first connecting sleeve (25) and the supporting sleeve (23) communicate with each other, a first mounting sleeve (221) is sleeved at one end of the inner pipe (22), and a second mounting sleeve (222) is sleeved at the other end; a guide pipe (24) is abuttingly arranged between the supporting sleeve (23) and the first mounting sleeve (221); the grinding handle (10) penetrates through the plastic pipe (211), the first connecting sleeve (25), the supporting sleeve (23), the guide pipe (24), the first mounting sleeve (221), the second mounting sleeve (222) and the inner pipe (22) in sequence from front to back and is connected with the corresponding position of the speed changing device; a first plane section (220) is arranged on one side of the inner pipe (22), a second plane section (241) is arranged on one side of the guide pipe (24), and the first plane section (220) and the second plane section (241) jointly enclose the inner side wall of the outer pipe (2) to form the cavity groove (30), and the cavity groove (30) communicates with the middle part of the supporting sleeve (23).

3. The surgical bur head of claim 2, wherein: A limiting ring (4) is fixedly sleeved on the outer wall of the grinding handle (10) at the position corresponding to the supporting sleeve (23), and the outer diameter size of the limiting ring (4) is larger than the inner diameter size of the connecting sleeve (25).

4. The surgical bur head of claim 2, wherein: One side of the shell (3) is provided with a connecting through hole sleeved on the outer sidewall of the outer tube (2), and the other side is provided with a mounting hole (312), the connecting through hole is communicated with the cavity groove (30); the handle assembly comprises a water cooling sleeve (5) provided with a water guide groove (51) and sleeved on the shell (3), a second connecting sleeve (54) is arranged in the water cooling sleeve (5), and a speed changing device is arranged on the second connecting sleeve (54); a pressing sleeve (6) is sleeved on the outer side of the water cooling sleeve (5), a groove (52) is arranged on the outer wall of the water cooling sleeve (5), a cooling water channel communicated with the water guide groove (51) is formed between the inner sidewall of the pressing sleeve (6) and the groove (52), an opening (50) communicated with the connecting through hole is arranged at one end of the cooling water channel, a water outlet hole (35) is arranged on the shell (3) at a position corresponding to the opening (50), and the inner sidewall of the pressing sleeve (6) and the water guide groove (51) form a water injection hole.

5. The surgical bur head of claim 4, wherein: A positioning groove (34) is arranged on the outer sidewall of the shell (3), and a limiting ring table (60) is arranged on the pressing sleeve (6) at a position corresponding to the positioning groove (34), and the limiting ring table (60) is buckled in the positioning groove (34).

6. The surgical bur head of claim 4, wherein: The speed changing device comprises a transition sleeve (32) sleeved in the connecting through hole, one end in the transition sleeve (32) is sleeved and fixed with the outer wall of the inner tube (22), the other end is sleeved with a mounting sleeve (321), a supporting tube (31) is sleeved on the mounting sleeve (321), a transmission gear (33) is sleeved on the supporting tube (31), the grinding handle (10) penetrates through the second mounting sleeve (222) and extends into the shell (3), the extending end of the grinding handle (10) extends into the transition sleeve (32) and penetrates out of the supporting tube (31).

7. The surgical bur head of claim 6, wherein: A connecting hole (53) is arranged in the water cooling sleeve (5), the speed changing device further comprises a second connecting sleeve (54) fixed in the connecting hole (53), a guide hole is arranged on the second connecting sleeve (54), a guide sleeve (55) is arranged in the guide hole, a transmission shaft (61) having one end connected with the output end of the power motor is arranged on the guide sleeve (55), and the other end of the transmission shaft (61) is sleeved with a driving gear (62) meshed and connected with the transmission gear (33).

8. The surgical bur head of claim 7, wherein: One end of the transmission shaft (61) sleeved with the driving gear (62) protrudes from the driving gear (62) and extends into the mounting hole (312).

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