Integrated grinding head

Abstract

The utility model relates to the field of medical instruments, and discloses an integrated grinding head which comprises an outer shell, an outer pipe, a grinding head assembly, a driving motor and a water injection assembly. One end of the outer pipe is mounted to the outer shell; the grinding head assembly comprises a grinding head part, a grinding handle part and an elastic shaft which are sequentially connected, the elastic shaft is rotatably installed in the outer pipe, and the grinding head part is located at the end of the outer pipe; the driving motor is installed in the outer shell, and an output shaft of the driving motor is in transmission connection with one end of the elastic shaft. The water injection assembly comprises a water passing pipe, at least part of the structure of the water passing pipe is attached to the driving motor, one end of the water passing pipe communicates with the outer pipe, and the other end of the water passing pipe is connected with a water inlet connector. The integrated structural design is adopted, the driving motor is integrated on the shell, the stability of the whole structure is improved, the step of disinfecting the grinding head can be omitted, and meanwhile the driving motor can be cooled through the water passing pipe.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially relates to an integral type grinding head. BACKGROUND

[0002] At present, in the orthopedic surgery field of surgical operation, medical staff often uses grinding head to implement grinding operation on the surgical site of patient's skeleton. For example, the application number 201921955126.9 discloses a kind of inner water injection's surgical operation grinding head, including grinding head, cutter tube assembly and shell part, cutter tube assembly includes inner tube, intermediate tube and outer tube, inner tube is equipped with water injection hole, intermediate tube is equipped with a section of open slot, water inlet hole is arranged on the outer tube, and water pipe plug is inserted in the water inlet hole;Supporting rod is inserted in the inner tube, and the inserted end of supporting rod is inserted with grinding handle with grinding head, the outer side wall of the inner tube, the inner side wall of the outer tube and the open slot are jointly enclosed to form water injection channel, and the gap formed between the inner tube and grinding handle is communicated with water injection channel through water injection hole.

[0003] The grinding handle of the above-mentioned grinding head has a certain bending degree, so that medical staff can have a better view when operating, and it is more convenient to grind the bone. However, the existing grinding head needs to be connected with a driving handle with a motor when used, that is, the grinding head and the driving handle are designed in a split type, and when the driving shaft of the grinding head is connected with the motor of the handle, there may be a certain degree of connection error, which also reduces the stability of the grinding head. After the operation, the handle is reused, and the handle needs to be disinfected, which is troublesome and increases the workload of the hospital. SUMMARY

[0004] Therefore, the utility model aims at providing an integral type grinding head to solve the problem of poor stability and inconvenient disinfection of the grinding head and driving handle in the prior art.

[0005] The utility model solves the above technical problems through the following technical means:

[0006] An integral type grinding head, the integral type grinding head comprises:

[0007] A shell body;

[0008] An outer tube, one end of the outer tube is installed to the shell body;

[0009] A grinding head assembly, the grinding head assembly comprises grinding head part, grinding handle part and elastic shaft connected in sequence, the elastic shaft is rotatably installed in the outer tube, and the grinding head part is located at the end of the outer tube;

[0010] a driving motor mounted in the outer housing, an output shaft of the driving motor being eccentrically connected with one end of the elastic shaft, a driven gear being mounted on the elastic shaft, a driving gear being mounted on the output shaft of the driving motor, the driving gear and the driven gear being in mesh with each other; and

[0011] a water injection assembly comprising a water passing pipe, at least part of the water passing pipe being in close contact with the driving motor, one end of the water passing pipe being in communication with the outer pipe, and the other end being connected with a water inlet interface.

[0012] In a possible implementation, a mounting seat is mounted in the outer housing, the mounting seat being provided with a connecting pipe and a mounting position at two ends respectively, one end of the outer pipe being fixed in the connecting pipe, and one end of the driving motor being fixed in the mounting position.

[0013] In a possible implementation, the integrated grinding head further comprises a supporting assembly, the supporting assembly comprising a first hose, a second hose and a shock-absorbing pipe mounted in the outer pipe in sequence, the first hose being sleeved on the elastic shaft away from the side of the grinding handle part, the second hose being sleeved on the elastic shaft between the grinding handle part and the first hose, and the shock-absorbing pipe being sleeved on the grinding handle part.

[0014] In a possible implementation, the water injection assembly further comprises a first sleeve pipe, the first sleeve pipe being mounted between the outer pipe and the first hose, one end of the first sleeve pipe having a notch, so that the first sleeve pipe, part of the inner wall of the outer pipe and part of the outer wall of the first hose form a first water injection channel, and a water inlet hole is formed in the outer pipe and in communication with the first water injection channel.

[0015] In a possible implementation, the water injection assembly further comprises a second sleeve pipe, the second sleeve pipe being mounted between the outer pipe and the second hose, the second sleeve pipe being an incomplete pipe body structure, the second sleeve pipe, part of the inner wall of the outer pipe and part of the outer wall of the second hose forming a second water injection channel, the second water injection channel being in communication with the first water injection channel.

[0016] The shock-absorbing pipe is provided with a water outlet channel extending axially along the shock-absorbing pipe, one end of the water outlet channel being in communication with the second water injection channel, and the other end being towards the grinding head part.

[0017] In a possible implementation, the water injection assembly further comprises a water injection adapter, the water injection adapter being mounted between one end of the water passing pipe and the water inlet hole.

[0018] In a possible implementation, the integrated grinding head further comprises a driving shaft rotatably mounted in the outer tube through a bearing, the driving shaft is a tubular structure, the driving shaft is sleeved on the elastic shaft away from the grinding handle part and fixed with the elastic shaft.

[0019] In a possible implementation, the driven gear is mounted on the driving shaft, and the number of teeth of the driving gear is greater than that of the driven gear.

[0020] In a possible implementation, the grinding handle part is provided with a limiting sleeve away from the grinding head part, the diameter of the limiting sleeve is greater than the inner diameter of the damping tube, and the damping tube is located between the limiting sleeve and the grinding head part.

[0021] In a possible implementation, the driving motor is connected with a cable, and an end of the cable away from the driving motor extends to the outside of the outer shell.

[0022] The utility model discloses the beneficial effects:

[0023] 1. By adopting the technical scheme of the application, the driving motor is directly integrated into the outer shell, that is, an integrated structure design is adopted, which can reduce the shaking degree of the grinding head during operation, improve the stability and safety of the grinding head.

[0024] 2. By adopting the technical scheme of the application, the cooling water provided by the water pipe can not only cool the driving motor to ensure normal operation of the driving motor, but also cool and lubricate the elastic shaft to ensure high-speed rotation of the elastic shaft 330.

[0025] 3. By adopting the technical scheme of the application, when the grinding head assembly rotates at high speed, the cooling water can flow through the first water injection channel, the second water injection channel and the water outlet channel in sequence from the water inlet hole and finally be sprayed to the grinding head part. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description.

[0027] Figure 1 is a structural schematic diagram of an integrated grinding head in an embodiment of the present application;

[0028] Figure 2 is a partial sectional view of an integrated grinding head in an embodiment of the present application;

[0029] Figure 3 is an enlarged schematic diagram of A in an embodiment of the present application; Figure 2

[0030] Figure 4 is an enlarged schematic diagram of B in an embodiment of the present application; Figure 2

[0031] Figure 5 is an enlarged schematic diagram of C in an embodiment of the present application; Figure 2

[0032] Figure 6 is an exploded schematic diagram of an integrated grinding head in an embodiment of the present application;

[0033] BRIEF DESCRIPTION OF DRAWINGS 100, outer housing; 200, outer pipe; 210, water inlet hole; 310, grinding head part; 320, grinding handle part; 321, limiting sleeve; 330, elastic shaft; 410, first hose; 420, second hose; 430, shock-absorbing pipe; 431, water outlet channel; 500, driving motor; 510, driving gear; 520, cable; 600, mounting seat; 610, connecting pipe; 620, mounting position; 710, first sleeve pipe; 720, second sleeve pipe; 730, first water injection channel; 740, second water injection channel; 750, water injection adapter; 760, water passing pipe; 761, water inlet interface; 800, driving shaft; 810, bearing; 820, driven gear. DETAILED DESCRIPTION

[0034] The advantages and effects of the present application can be understood by the content disclosed in the specification by the following specific embodiments. It should be noted that the drawings provided in the following embodiments are only used for exemplary illustration, and the representation is only a schematic diagram, not a physical drawing, and cannot be understood as a limitation of the present application. In order to better illustrate the embodiments of the present application, some components in the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; it can be understood by those skilled in the art that some well-known structures and their descriptions in the drawings may be omitted.

[0035] ​​​In the drawings of the embodiments of the utility model, same or similar reference signs correspond to same or similar components, and in the description of the utility model, it should be understood that if the orientation or position relationship indicated by terms such as ''upper'', ''lower'', ''left'', ''right'', ''front'', ''back'' and the like is based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing the utility model and simplifying the description, and therefore the terms describing the position relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the utility model, and for ordinary skilled persons in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0036] As shown in the figure, Figures 1-6 The utility model discloses an integrated grinding head, and the integrated grinding head comprises an outer shell 100, an outer pipe 200, a grinding head assembly, a driving motor 500 and a water injection assembly. The outer shell 100 is a two-half structure, that is, the outer shell 100 is assembled by two half shells with the same shape. One end of the outer pipe 200 is fixedly installed to the end of the outer shell 100, the middle part of the outer pipe 200 has a certain degree of curvature, and the pipe diameter of the end of the outer pipe 200 gradually decreases. The grinding head assembly comprises a grinding head part 310, a grinding handle part 320 and an elastic shaft 330 connected in sequence, wherein the elastic shaft 330 has a certain elasticity and can be bent during rotation. The elastic shaft 330 is rotatably installed in the outer pipe 200, at least part of the structure of the grinding handle part 320 is located in the outer pipe 200, and the grinding head part 310 is located at the end of the outer pipe 200.

[0037] The driving motor 500 is installed in the outer shell 100, the output shaft of the driving motor 500 is eccentrically connected with one end of the elastic shaft 330, a cable 520 for power supply is connected to the driving motor 500, and one end of the cable 520 away from the driving motor 500 extends to the outside of the outer shell 100. The driving motor 500 can be a stepping motor or a servo motor, a driven gear 820 is installed on the elastic shaft 330, a driving gear 510 is installed on the output shaft of the driving motor 500, and the driving gear 510 and the driven gear 820 are meshed with each other.

[0038] The water injection assembly comprises a water pipe 760, at least part of the structure of the water pipe 760 is attached to the driving motor 500, specifically, the water pipe 760 can be wound on the driving motor 500 in a spiral structure, and this design can cool the driving motor 500. One end of the water pipe 760 is communicated with the outer pipe 200, the other end is connected with a water inlet interface 761, the water inlet interface 761 can be connected with an external water supply device, then cooling water is injected into the outer pipe 200 through the water pipe 760, and this design can cool the elastic shaft 330 on the one hand and also has the effect of lubricating the elastic shaft 330, so that the elastic shaft 330 can rotate at a high speed.

[0039] By the technical solution, the driving motor 500 is directly integrated into the outer shell 100, that is, an integrated structure design is adopted, so that the shaking degree of the grinding head during operation is reduced, and the stability and safety of the grinding head are improved. Compared with the split type grinding head, the integrated grinding head in the embodiment does not need to be disinfected after the operation, and can be directly discarded after use, thereby improving the operation efficiency. In addition, the cooling water provided by the water pipe 760 can not only cool the driving motor 500 to ensure normal operation of the driving motor 500, but also cool and lubricate the elastic shaft 330 to reduce the temperature and rotating friction of the elastic shaft 330, so that the elastic shaft 330 can rotate at high speed. Similarly, the elastic shaft 330 can also be cooled and lubricated to reduce the temperature and rotating friction of the grinding handle 320.

[0040] In a possible embodiment, the outer shell 100 is fixedly provided with a mounting seat 600, the mounting seat 600 is provided with a connecting pipe 610 and a mounting position 620 at two ends, respectively, one end of the outer pipe 200 is fixed in the connecting pipe 610, and one end of the driving motor 500 is fixed in the mounting position 620. The outer pipe 200 and the driving motor 500 are fixed together by the mounting seat 600, so that the shaking degree of the grinding head during operation is further reduced, and the stability and safety of the grinding head are improved.

[0041] In a possible embodiment, the integrated grinding head further comprises a supporting assembly, the supporting assembly comprises a first hose 410, a second hose 420 and a damping pipe 430 which are sequentially installed in the outer pipe 200, the first hose 410 is sleeved on the elastic shaft 330 away from the grinding handle 320, the second hose 420 is sleeved on the elastic shaft 330 between the grinding handle 320 and the first hose 410, and covers the bending part of the elastic shaft 330, the first hose 410 and the second hose 420 cooperate with each other to better support the elastic shaft 330. The damping pipe 430 is sleeved on the grinding handle 320, and the damping pipe 430 can better damp the grinding handle 320 to reduce the shaking of the grinding head 310. In addition, the end of the damping pipe 430 extends to the outside of the outer pipe 200, and the pipe diameter of this part of structure is smaller than that of the main body of the damping pipe 430, which can expand the user's field of vision and facilitate the user's operation.

[0042] The technical solution has the advantages that the grinding head assembly can be well supported, and the stability of the grinding head is further enhanced. It should be noted that the first hose 410 and the second hose 420 are two discontinuous hoses. The cooling water flowing into the outer pipe 200 from the water pipe 760 can be immersed in the second hose 420 and the first hose 410, and in contact with the elastic shaft 330, so as to lubricate the elastic shaft 330 and reduce the rotational friction between the elastic shaft 330 and the second hose 420 and the first hose 410. Similarly, the cooling water can also be immersed in the damping pipe 430, so as to lubricate the grinding handle part 320 and reduce the rotational friction between the grinding handle part 320 and the damping pipe 430.

[0043] In a possible embodiment, the water injection assembly further comprises a first sleeve 710 and a second sleeve 720. The first sleeve 710 is fixedly installed between the outer pipe 200 and the first hose 410. Specifically, the outer diameter of the first sleeve 710 is equal to the inner diameter of the outer pipe 200, and the inner diameter of the first sleeve 710 is equal to the outer diameter of the first hose 410. One end of the first sleeve 710 has a notch, which forms a first water injection channel 730 between the first sleeve 710, part of the inner wall of the outer pipe 200 and part of the outer wall of the first hose 410. The outer pipe 200 is provided with a water inlet hole 210 which is in communication with the first water injection channel 730.

[0044] The second sleeve 720 is fixedly installed between the outer pipe 200 and the second hose 420. Specifically, the outer diameter of the second sleeve 720 is equal to the inner diameter of the outer pipe 200, and the inner diameter of the second sleeve 720 is equal to the outer diameter of the first hose 410. The second sleeve 720 is an incomplete pipe structure. The incomplete pipe structure forms a second water injection channel 740 between the second sleeve 720, part of the inner wall of the outer pipe 200 and part of the outer wall of the second hose 420. The second water injection channel 740 is in communication with the first water injection channel 730. It should be noted that the end of the first water injection channel 730 away from the second water injection channel 740 is provided with a sealing structure.

[0045] The damping pipe 430 is provided with a water outlet channel 431 extending in the axial direction of the damping pipe 430. One end of the water outlet channel 431 is in communication with the second water injection channel 740, and the other end faces the grinding head part 310. In addition, the pipe wall thickness at the position of the water outlet channel 431 on the damping pipe 430 can be set to be relatively large.

[0046] According to the above technical solution, when the grinding head assembly rotates at high speed, the cooling water can flow from the water inlet hole 210 to the first water injection channel 730, the second water injection channel 740 and the water outlet channel 431 in sequence, and finally be sprayed to the grinding head part 310. This design not only cools and cools the grinding handle part 320, the elastic shaft 330 and the grinding head part 310 rotating at high speed, but also flushes the grinding site of the patient's bone, thereby improving the safety of the grinding operation.

[0047] In the embodiment, the water injection assembly further comprises a water injection adapter 750. The water injection adapter 750 is installed between one end of the water passing pipe 760 and the water inlet hole 210, and can communicate the water passing pipe 760 and the water inlet hole 210. The water passing pipe 760 is a flexible pipe, at least part of the water passing pipe 760 near the one end of the water injection adapter 750 is installed in the outer shell 100, the other end extends out of the outer shell 100, and the water inlet adapter 761 is connected. By such arrangement, when the medical staff uses the device, only the water supply equipment outside is communicated with the water inlet adapter 761, and the device can be provided with cooling water.

[0048] In a possible embodiment, the integrated grinding head further comprises a driving shaft 800 rotatably installed in the outer pipe 200 through a bearing 810. The driving shaft 800 is a tubular structure, the driving shaft 800 is sleeved on the one end of the elastic shaft 330 away from the grinding handle 320, and is fixed with the elastic shaft 330. By arranging the driving shaft 800, the end of the elastic shaft 330 can be more stable when rotating, and the degree of shaking is reduced.

[0049] In the embodiment, the driving shaft 800 drives the elastic shaft 330 to rotate, the driven gear 820 is keyed on the driving shaft 800, and the number of teeth of the driving gear 510 is greater than the number of teeth of the driven gear 820. By the cooperation of the driving gear 510 and the driven gear 820, not only the power of the driving motor 500 can be stably transmitted to the output shaft, but also the stable speed-up of the output shaft can be realized, and the operation efficiency is improved.

[0050] In a possible embodiment, the one end of the grinding handle 320 away from the grinding head 310 is provided with a limiting sleeve 321, the diameter of the limiting sleeve 321 is greater than the inner diameter of the damping pipe 430, and the damping pipe 430 is located between the limiting sleeve 321 and the grinding head 310. By arranging the limiting sleeve 321, the grinding handle 320 will not be separated from the damping pipe 430, and the stability between the structures is improved.

[0051] The above embodiments are only used to illustrate the technical solutions of the present application and not to limit it. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, and all should be covered in the scope of the claims of the present application. The technical, shape and structure parts not described in detail in the present application are all known technologies.

Claims

1. An integrated grinding head, characterized by, The integrated grinding head comprises: an outer shell (100); an outer tube (200) having one end mounted to the outer shell (100); a grinding head assembly comprising a grinding head portion (310), a grinding handle portion (320) and an elastic shaft (330) connected in sequence, the elastic shaft (330) being rotatably mounted in the outer tube (200), the grinding head portion (310) being located at the end of the outer tube (200); a driving motor (500) mounted in the outer shell (100), an output shaft of the driving motor (500) being eccentrically connected to one end of the elastic shaft (330), a driven gear (820) being mounted on the elastic shaft (330), a driving gear (510) being mounted on the output shaft of the driving motor (500), the driving gear (510) and the driven gear (820) being in meshing engagement with each other; and a water injection assembly comprising a water passing pipe (760), at least part of the structure of the water passing pipe (760) being in mutual adhesion with the driving motor (500), one end of the water passing pipe (760) being in communication with the outer tube (200), and the other end being connected with a water inlet interface (761).

2. The integral grinding head of claim 1 wherein, The outer shell (100) is mounted with a mounting seat (600), the mounting seat (600) being provided with a connecting tube (610) and a mounting site (620) at two ends respectively, one end of the outer tube (200) being fixed in the connecting tube (610), and one end of the driving motor (500) being fixed in the mounting site (620).

3. The integral grinding head of claim 1 wherein, The integrated grinding head further comprises a supporting assembly comprising a first hose (410), a second hose (420) and a shock absorbing tube (430) mounted in the outer tube (200) in sequence, the first hose (410) being sleeved on the elastic shaft (330) away from the side of the grinding handle portion (320), the second hose (420) being sleeved on the elastic shaft (330) between the grinding handle portion (320) and the first hose (410), and the shock absorbing tube (430) being sleeved on the grinding handle portion (320).

4. The integral grinding head of claim 3 wherein, The water injection assembly further comprises a first sleeve pipe (710) mounted between the outer tube (200) and the first hose (410), one end of the first sleeve pipe (710) having a notch, so that the first sleeve pipe (710), part of the inner wall of the outer tube (200) and part of the outer wall of the first hose (410) enclose a first water injection channel (730), and the outer tube (200) is provided with a water inlet hole (210) in communication with the first water injection channel (730).

5. The integral grinding head of claim 4 wherein, The water injection assembly further comprises a second sleeve (720) mounted between the outer pipe (200) and the second hose (420), the second sleeve (720) being a non-complete pipe structure, the second sleeve (720), part of the inner wall of the outer pipe (200) and part of the outer wall of the second hose (420) forming a second water injection channel (740), the second water injection channel (740) being in communication with the first water injection channel (730); The damping pipe (430) is provided with a water outlet channel (431) extending axially along the damping pipe (430), one end of the water outlet channel (431) being in communication with the second water injection channel (740) and the other end being directed towards the grinding head portion (310).

6. The integral grinding head of claim 5 wherein, The water injection assembly further comprises a water injection adapter (750) mounted between one end of the water passing pipe (760) and the water inlet hole (210).

7. The integral grinding head of claim 1 wherein, The integrated grinding head further comprises a driving shaft (800) rotatably mounted in the outer pipe (200) through a bearing (810), the driving shaft (800) being a tubular structure, the driving shaft (800) being sleeved on one end of the elastic shaft (330) away from the grinding handle portion (320) and being fixed with the elastic shaft (330).

8. The integral grinding head of claim 7 wherein, The driven gear (820) is mounted on the driving shaft (800), the number of teeth of the driving gear (510) being greater than that of the driven gear (820).

9. The integral abrasive head of claim 3, wherein, One end of the grinding handle portion (320) away from the grinding head portion (310) is provided with a limiting sleeve (321), the diameter of the limiting sleeve (321) being greater than the inner diameter of the damping pipe (430), the damping pipe (430) being located between the limiting sleeve (321) and the grinding head portion (310).

10. The integral grinding head of any of claims 1-8, wherein, The driving motor (500) is connected with a cable (520), one end of the cable (520) away from the driving motor (500) extending to the outside of the outer housing (100).

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