CN215018430U - Eccentric sheath-protecting grinding head - Google Patents
Eccentric sheath-protecting grinding head Download PDFInfo
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- CN215018430U CN215018430U CN202120236584.8U CN202120236584U CN215018430U CN 215018430 U CN215018430 U CN 215018430U CN 202120236584 U CN202120236584 U CN 202120236584U CN 215018430 U CN215018430 U CN 215018430U
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Abstract
The utility model discloses an eccentric sheath-protecting grinding head, which comprises a grinding head (1) and an outer tube (2), wherein one end of the outer tube (2) is provided with a bending section, the end surface of the bending section is fixedly provided with a protecting sheath (21), one end of the protecting sheath (21) is provided with an eccentric hole, and the other end is provided with a abdicating groove (22); the bistrique is equipped with bistrique handle (11), during bistrique handle (11) stretched into outer tube (2) be equipped with the bracing piece subassembly between outer tube (2) and bistrique handle (11), the end of stretching into of bistrique handle (11) is connected with the output of motor. The utility model discloses the bistrique that the form was buckled and take protecting of eccentric orfice can not only increase the grinding area, is favorable to handling the osseous tissue, can also avoid non-operation position be injured, sets up cooling device and can follow the cooling bistrique that grinds the handle outflow, carries out the operation of grinding the osseous tissue from this, has simplified mounting structure, has alleviateed weight, has reduced the space that occupies, and stability is high, and the security is good.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to eccentric sheath grinding head that protects.
Background
When carrying out bone tissue grinding operation in the surgery operation, traditional manual bistrique is inefficient, and inconvenient observation operation position, and the dynamics is difficult to control for the difficult excision of bone tissue that toughness is relatively poor around the operation position still leads to the fact the damage to the better soft tissue of toughness around the easy, especially leads to the fact the injury to the soft tissue near bone tissue, still can influence the recovery of operation position.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an eccentric sheath bistrique that protects that can avoid the damage in bone tissue grinding operation process.
The technical scheme of the utility model as follows:
an eccentric sheath grinding head comprises a grinding head and an outer tube, wherein one end of the outer tube is provided with a bending section, a sheath is fixedly arranged on the end surface of the bending section, one end of the sheath is provided with an eccentric hole, and the other end of the sheath is provided with a abdicating groove; the grinding head is provided with a grinding head handle, the grinding head handle extends into the outer tube, a support rod assembly is arranged between the outer tube and the grinding head handle, and the extending end of the grinding head handle is connected with the output end of the motor.
By adopting the structure, the grinding head handle is arranged in the outer tube in a penetrating way and extends into the supporting rod assembly to be connected with the output end of the motor, and the corresponding position of the supporting rod assembly is sleeved with the outer tube, so that the connection between the grinding head and the motor is not influenced by the outside; meanwhile, the grinding head extends out of the bending position of the outer tube, and a better operation angle is provided by guiding so as to adapt to the physiological structure of the growth of human bones; set up and protect the sheath and block the grinding position of bistrique, can effectively protect the soft tissue of non-operation position, set up the groove of stepping down on protecting the sheath, can avoid the bistrique to rotate and protect the sheath and produce the interference, thereby be fit for disposing the bistrique of great size, the area that the bistrique single face emerged the sheath is bigger promptly, the angle of easily adjusting the grinding operation, thereby improve work efficiency, on this basis, can suitably increase the rotational speed of grinding the handle, thereby shorten operation time, and the surface of a wound of bone tissue grinding position is neat stable, can improve bone tissue grinding or prosthetic treatment effect, the wound resumes sooner, control sawing depth and width that also can be fine, high convenience in operation, and convenient for installation.
In order to simplify the structure, preferably, the support rod assembly comprises a sleeve sleeved in an outer pipe, a first water inlet hole is formed in one side of the outer pipe, a section of open slot is formed in one side of the sleeve, and the first water inlet hole is communicated with the open slot; a connecting pipe is sleeved in the sleeve, and a second water inlet hole is formed in the position, corresponding to the opening groove, of the connecting pipe; be equipped with first stay pipe, second stay pipe and third stay pipe at this connecting pipe internal interval, the bistrique is connected with the elastic connection section, the one end of elastic connection end is equipped with the bistrique handle, the bistrique handle wears to establish first stay pipe, second stay pipe and third stay pipe in proper order, and the elastic connection section is located first stay intraductal, first stay pipe and second stay the interval region between the pipe and surround with the inner wall of connecting pipe and form first cavity, and the second inlet opening communicates with first cavity, the second is propped interval region between pipe and the third and is surrounded with the inner wall of connecting pipe and form the second cavity, all is equipped with the apopore on this outer tube, sleeve pipe and connecting pipe, and is three communicate into through-hole structure each other, and this through-hole structure communicates with the second cavity.
In order to simplify the structure and facilitate installation, preferably, the outer pipe is sleeved with a shell, a step hole is formed in the shell, a connecting through hole is formed in the small hole end of the step hole, the outer pipe is sleeved in the connecting through hole, an annular cavity is formed by the outer wall of the outer pipe and the inner wall of the small hole of the step hole, and the annular cavity is communicated with the first water inlet hole.
In order to simplify the structure and facilitate the leading-out of cooling water, preferably, a cooling device is arranged on the shell and comprises a water cooling jacket and a handle with a water injection hole, the handle is fixedly sleeved on the outer side wall of the motor, a connecting hole is formed in the handle, a pressing sleeve is sleeved on the outer side of the water cooling jacket, a groove is wound on the outer wall of the water cooling jacket, a cooling water channel communicated with the annular cavity structure is formed between the inner side wall of the pressing sleeve and the groove, and a notch is formed in one end of the water cooling jacket; the water cooling sleeve is inserted into the mounting sleeve, the water cooling sleeve is inserted into the large hole end of the stepped hole of the shell, a gap is reserved between the end surface of the insertion end of the mounting sleeve and the stepped surface of the stepped hole of the shell, a water passing groove communicated with the gap is formed, and the water passing groove is also communicated with the annular cavity in the shell;
the outer wall of the shell is provided with a circle of positioning grooves, the handle is provided with a stage, the middle of the stage is provided with a connecting hole, the step surface of the stage is provided with a water injection hole, one end of the water cooling jacket is sleeved on the outer wall of the lower end of the stage, the other end of the water cooling jacket is sleeved on the inner wall of the large hole end of the step hole of the shell, one end of the pressing jacket is sleeved on the outer wall of the high end of the stage, the other end of the pressing jacket is provided with a circle of bosses corresponding to the positioning grooves, and the bosses are buckled in the positioning grooves; the step surface of the stage, the corresponding position of the inner wall of the pressing sleeve and the end surface of the sleeving end of the water-cooling sleeve form a water outlet groove communicated with the water injection hole, one end of the water-cooling sleeve corresponding to the water outlet groove is provided with a transition groove, one end of the transition groove is communicated with the cooling water channel, the other end of the transition groove is communicated with the water outlet groove, and the cooling water flows into the water outlet groove from the water injection hole, flows into the cooling water channel through the transition groove, sequentially flows into the cavity structure through the notch and the water passing groove.
In order to facilitate installation, preferably, a step hole is formed in the water cooling sleeve, an installation sleeve is arranged in the step hole, one end of the installation sleeve extends into the step hole and is sleeved in the connecting hole, a step structure matched with the step hole is arranged on the outer side wall of the other end of the installation sleeve, the step structure is embedded in the step hole, and the step surfaces of the installation sleeve and the corresponding end of the step hole are abutted and limited.
For convenience of installation, preferably, a fixing sleeve is sleeved in the installation sleeve, a fixing hole is sleeved in the fixing sleeve, the fixing hole is sleeved on the outer wall of the outer tube, a third supporting tube penetrates through the grinding head handle, and a transmission sleeve is sleeved at the penetrating end of the grinding head handle; the output end of the motor is connected with a guide rod, the guide rod is sleeved with a connecting cylinder, and the connecting cylinder is sleeved on the transmission sleeve.
In order to prevent the leakage of cooling water, preferably, a groove is arranged on the outer side wall of the mounting sleeve, a first sealing ring is embedded in the groove, and the outer side wall of the first sealing ring is abutted with the corresponding position of the inner side wall of the connecting hole in a fit manner; a second sealing ring is embedded on the inner side wall of the water cooling sleeve, and the inner side wall of the second sealing ring is abutted to the corresponding position of the outer wall of the lower end of the step section in a laminating manner so as to prevent cooling water from flowing into the motor.
In order to facilitate the injection of cooling water, preferably, a water injection pipe is provided on the handle, and the water injection pipe is communicated with the water injection hole.
For the convenience of installation, as preferred, the connecting pipe and the first stay tube are all equipped with the bending section that the bending curvature is the same corresponding the bending position department of outer tube.
Has the advantages that: the utility model discloses the bistrique that the form was buckled and take protecting of eccentric orfice can not only increase the grinding area, is favorable to handling the osseous tissue, can also avoid non-operation position be injured, sets up cooling device and can follow the cooling bistrique that grinds the handle outflow, carries out the operation of grinding the osseous tissue from this, has simplified mounting structure, has alleviateed weight, has reduced the space that occupies, and stability is high, and the security is good.
Drawings
Fig. 1 is a schematic view of the installation structure of the present invention.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Fig. 3 is an enlarged view of fig. 1 at B.
Fig. 4 is an enlarged view of fig. 1 at C.
Fig. 5 is an enlarged view of fig. 1 at D.
Fig. 6 is an enlarged view of fig. 1 at E.
Figure 7 is an exploded view of the grater and support rod assembly.
Fig. 8 is a schematic structural view of the housing.
FIG. 9 is a schematic diagram of the structure of a water jacket.
Fig. 10 is a schematic structural view of the handle.
Fig. 11 is a schematic structural view of the support rod assembly and the housing.
Fig. 12 is an enlarged view of fig. 11 taken at F.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Shown by fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11 and fig. 12, the utility model discloses a bistrique 1 and outer tube 2 the one end of outer tube 2 is equipped with the bending segment, has set firmly the sheath 21 on the terminal surface of this bending segment, the one end of sheath 21 is equipped with the eccentric orfice, and the other end is equipped with the groove of stepping down 22.
The grinding head is provided with a grinding head handle 11, the grinding head handle 11 extends into the outer tube 2, a support rod assembly is arranged between the outer tube 2 and the grinding head handle 11, the support rod assembly comprises a sleeve 23 sleeved in the outer tube 2, a first water inlet hole 211 is arranged on one side of the outer tube 2, an open slot is arranged on one side of the sleeve 23, and the first water inlet hole 211 is communicated with the open slot; a connecting pipe 24 is sleeved in the sleeve 23, and a second water inlet hole 241 is arranged on the connecting pipe 24 at a position corresponding to the opening groove; a first supporting pipe 251, a second supporting pipe 252 and a third supporting pipe 253 are arranged in the connecting pipe 24 at intervals, the grinding head 1 is connected with an elastic connecting section, one end of the elastic connecting end is provided with a grinding head handle 11, the grinding head handle 11 sequentially penetrates through the first supporting pipe 251, the second supporting pipe 252 and the third supporting pipe 253, the elastic connecting section is located in the first supporting pipe 251, a spacing area between the first supporting pipe 251 and the second supporting pipe 252 and the inner wall of the connecting pipe 24 are encircled to form a first cavity 261, a second water inlet hole 241 is communicated with the first cavity 261, a spacing area between the second supporting pipe 252 and the third supporting pipe 253 and the inner wall of the connecting pipe 24 are encircled to form a second cavity 262, water outlet holes 27 are arranged on the outer pipe 2, the sleeve 23 and the connecting pipe 24, the three water outlet holes 27 are communicated with each other to form a through hole structure, and the through hole structure is communicated with the second cavity 262; the bending positions of the connecting pipe 24 and the first supporting pipe 251 corresponding to the outer pipe 2 are both provided with bending sections with the same bending curvature.
The outer pipe 2 is sleeved with a shell 3, a step hole is formed in the shell 3, a connecting through hole 31 is formed in the small hole end of the step hole, the outer pipe 2 is sleeved in the connecting through hole 31, an annular cavity is formed by the outer wall of the outer pipe 2 and the inner wall of the small hole of the step hole, and the annular cavity is communicated with a first water inlet hole 32.
The cooling device is arranged on the shell 3 and comprises a water cooling jacket 4 and a handle 41 with a water injection hole, the handle 41 is fixedly sleeved on the outer side wall of the motor, a connecting hole 415 is arranged on the handle 41, a pressing jacket 5 is sleeved on the outer side of the water cooling jacket 4, a groove 42 is wound on the outer wall of the water cooling jacket 4, a cooling water channel communicated with an annular cavity structure is formed between the inner side wall of the pressing jacket 5 and the groove 42, and a notch is arranged at one end of the water cooling jacket 4; the water cooling jacket 4 is inserted with a mounting jacket 53, the water cooling jacket 4 is inserted into the big hole end of the step hole of the shell 3, a gap is left between the end surface of the insertion end of the mounting jacket 53 and the step surface of the step hole of the shell 3, a water passing groove 331 communicated with the gap is formed, and the water passing groove 331 is also communicated with the annular cavity in the shell 3.
A circle of positioning grooves 33 are formed in the outer wall of the shell 3, a platform stage 411 is arranged on the handle 41, a connecting hole 415 is formed in the middle of the platform stage 411, a water injection hole 412 is formed in the step surface of the platform stage 411, a water injection pipe is arranged on the handle 41, and the water injection pipe is communicated with the water injection hole 412; one end of the water cooling sleeve 4 is sleeved on the outer wall of the lower end of the platform stage 411, the other end of the water cooling sleeve is sleeved on the inner wall of the large hole end of the stepped hole of the shell 3, one end of the pressing sleeve 5 is sleeved on the outer wall of the upper end of the platform stage 411, a circle of boss is arranged at the position, corresponding to the positioning groove 33, of the other end of the pressing sleeve, and the boss is buckled in the positioning groove 33; a water outlet groove 413 communicated with the water injection hole 412 is formed on the step surface of the second stage 411, the corresponding position of the inner wall of the pressing sleeve 5 and the end surface of the sleeved end of the water cooling sleeve 4, a transition groove 414 is arranged at one end of the water cooling sleeve 4 corresponding to the water outlet groove 413, one end of the transition groove 414 is communicated with the cooling water channel, the other end of the transition groove 414 is communicated with the water outlet groove 413, and the cooling water flows into the water outlet groove 413 from the water injection hole 412, flows into the cooling water channel through the transition groove 414, sequentially flows through the notch and the water passing groove and flows into the cavity structure.
The water cooling jacket 4 is provided with a step hole, a mounting sleeve 53 is arranged in the step hole, one end of the mounting sleeve 53 extends into the step hole and is sleeved in the connecting hole 415, the outer side wall of the other end of the mounting sleeve is provided with a step structure matched with the step hole, the step structure is embedded in the position of the step hole, and the mounting sleeve 53 and the step surface of the corresponding end of the step hole are mutually abutted and limited.
A fixing sleeve 51 is sleeved in the mounting sleeve 53, the fixing sleeve 51 is provided with a fixing hole, the fixing hole is sleeved on the outer wall of the outer tube 2, the grinding head handle 11 penetrates through a third supporting tube 253, and a transmission sleeve 52 is sleeved at the penetrating end of the grinding head handle 11; the output end of the motor is connected with a guide rod 54, the guide rod 54 is sleeved with a connecting cylinder 541, and the connecting cylinder 541 is sleeved on the transmission sleeve 52.
A groove is formed in the outer side wall of the mounting sleeve 53, a first sealing ring 61 is embedded in the groove, and the outer side wall of the first sealing ring 61 is abutted with the corresponding position of the inner side wall of the connecting hole 415 in a fit manner; a second sealing ring 62 is embedded on the inner side wall of the water cooling jacket 4, and the inner side wall of the second sealing ring 62 is abutted with the corresponding position of the outer wall of the lower end of the step section 411 in a fitting manner so as to prevent cooling water from flowing into the motor.
The utility model discloses a use method as follows:
as shown in fig. 1, 2, 3, 4, 5, 7, 11 and 12, the grinding head handle 11 extends into the outer tube 2 and penetrates through the third supporting tube 253, the penetrating end of the grinding head handle 11 extends into the outer shell 3, the penetrating end of the outer tube 2 further extends into the fixing hole of the mounting sleeve 53, and the penetrating end of the grinding head handle 11 is sleeved with the transmission sleeve 52; the output end of the motor is connected with a guide rod 54, the guide rod 54 is sleeved with a connecting cylinder 541, the connecting cylinder 541 is sleeved on the transmission sleeve 52, and the other end of the connecting cylinder 541 is fixedly sleeved with the guide rod 54 connected with the output end of the motor; in the rotation process of the elastic connecting section, when the grinding head 1 contacts the grinding position, the yielding position can be bounced off under the action of elastic force, only after the grinding position is confirmed, the grinding head 1 is extruded to the grinding position, the accuracy of the grinding position can be ensured to a certain extent, the grinding head 1 extends out of the bending position of the outer tube 2, and the elastic connecting section is bent along with the bending position, so that a better operating angle is provided for guiding, and the elastic connecting section is suitable for the physiological structure of the growth of human bones; the protective sheath 21 is arranged to block the grinding position of the grinding head 1, soft tissues at non-operation positions can be effectively protected, the abdicating groove 22 is formed in the protective sheath 21, the grinding head 1 can be prevented from rotating and interfering with the protective sheath 21, and therefore the grinding head 1 is suitable for being configured with a large size, namely the grinding head 1 protrudes out of the protective sheath 21 from a single side, the area is larger, the angle of grinding operation is easy to adjust, and working efficiency is improved.
Meanwhile, a sleeve 23 is sleeved in the outer pipe 2, one side of the sleeve 23 is provided with a section of open slot, a connecting pipe 24 is sleeved in the sleeve 21, the outer pipe 2 is fixedly sleeved with the connecting through hole 31, the water cooling jacket 4 is sleeved in the big hole end of the step hole of the shell 3, a gap is reserved between the end surface of the sleeved end of the water cooling jacket 4 and the step surface of the step hole to form a water passing groove 331, the water passing groove 331 is communicated with the annular cavity, and the outer pipe 2 is provided with a first water inlet hole 211 communicated with the annular cavity; a second water inlet 241 is provided at a position corresponding to the opening groove on the connecting pipe 24.
Meanwhile, as shown in fig. 4, 6, 8, 9, 10 and 12, a pressing sleeve 5 is sleeved on the outer side of the water cooling sleeve 4, one end of the pressing sleeve 5 is sleeved with the handle 41, and forms a closed cavity structure with the water outlet groove 413, so that the cooling water can be prevented from leaking; the outer wall of the water cooling jacket 4 is wound with a groove 42, a cooling water channel communicated with the cavity structure is formed between the inner side wall of the pressing jacket 5 and the groove 42, and in order to improve the cooling efficiency, the spiral groove 42 is formed in the outer wall of the water cooling jacket 4, namely, the spiral cooling water channel is formed together with the pressing jacket 5, so that the passing time of water flow is prolonged, and the cooling efficiency can be improved; cooling water is injected from a water injection pipe (not shown), the cooling water flows into the water outlet groove 413 from the water injection hole 412, flows into the cooling water channel through the aqueduct 414, sequentially flows into the annular cavity through the notch and the water passing groove 331, flows into the first cavity 261 through the first water inlet hole 211 and the second water inlet hole 241, flows to the working position of the grinding head 1 along the grinding head handle 11 through the gap between the first supporting pipe 251 and the grinding head handle 11, and can cool the temperature of the shell 3, the outer pipe 2, the sleeve 23 and the connecting pipe 24; when the inflow water is large, the excess water flows into the second cavity 262 in the first cavity 261 through the gap between the second stay tube 252 and the grinding head handle 11, and is discharged through the through-hole structure formed by the three outlet holes 27.
In addition, in the process, a second sealing ring 62 is embedded on the inner side wall of the water cooling jacket 4, the inner side wall of the sealing ring 43 is abutted against the corresponding position of the outer wall of the lower end of the step section 411, and the position of the water outlet groove 413 is sealed; the outer side wall of the mounting sleeve 53 is provided with a first sealing ring 61, so that the secondary anti-leakage protection effect is achieved on the water inlet direction, and the use stability and safety of the operation process are ensured.
The utility model discloses do not describe the part unanimously with prior art, do not describe herein any more.
The above is only the embodiment of the present invention, not the limitation of the patent scope of the present invention, all the equivalent structures made by the contents of the specification and the drawings are directly or indirectly applied to other related technical fields, all the same principle is within the patent protection scope of the present invention.
Claims (9)
1. The utility model provides an eccentric sheath bistrique that protects which characterized in that: the grinding head comprises a grinding head (1) and an outer tube (2), wherein one end of the outer tube (2) is provided with a bending section, the end surface of the bending section is fixedly provided with a protective sheath (21), one end of the protective sheath (21) is provided with an eccentric hole, and the other end of the protective sheath is provided with a abdicating groove (22); the bistrique is equipped with bistrique handle (11), during bistrique handle (11) stretched into outer tube (2) be equipped with the bracing piece subassembly between outer tube (2) and bistrique handle (11), the end of stretching into of bistrique handle (11) is connected with the output of motor.
2. The eccentric sheath-protecting abrasive head according to claim 1, wherein: the support rod assembly comprises a sleeve (23) sleeved in an outer pipe (2), a first water inlet hole (211) is formed in one side of the outer pipe (2), an open groove is formed in one side of the sleeve (23), and the first water inlet hole (211) is communicated with the open groove; a connecting pipe (24) is sleeved in the sleeve (23), and a second water inlet hole (241) is formed in the position, corresponding to the opening groove, of the connecting pipe (24); a first supporting pipe (251), a second supporting pipe (252) and a third supporting pipe (253) are arranged in the connecting pipe (24) at intervals, the grinding head (1) is connected with an elastic connecting section, one end of the elastic connecting end is provided with a grinding head handle (11), the grinding head handle (11) sequentially penetrates through the first supporting pipe (251), the second supporting pipe (252) and the third supporting pipe (253), the elastic connecting section is positioned in the first supporting pipe (251), a spacing area between the first supporting pipe (251) and the second supporting pipe (252) and the inner wall of the connecting pipe (24) are encircled to form a first cavity (261), a second water inlet hole (241) is communicated with the first cavity (261), a spacing area between the second supporting pipe (252) and the third supporting pipe (253) and the inner wall of the connecting pipe (24) are encircled to form a second outer pipe cavity (262), and water outlet holes (27) are arranged on the connecting pipe (2), the sleeve (23) and the connecting pipe (24), the three water outlet holes (27) are communicated with each other to form a through hole structure, and the through hole structure is communicated with the second cavity (262).
3. An eccentric sheath-protecting abrasive head according to claim 2, wherein: the outer tube (2) is sleeved with a shell (3), a step hole is formed in the shell (3), a connecting through hole (31) is formed in the small hole end of the step hole, the outer tube (2) is sleeved in the connecting through hole (31), an annular cavity is formed between the outer wall of the outer tube (2) and the inner wall of the small hole in the step hole, and the annular cavity is communicated with a first water inlet hole (211).
4. An eccentric sheath-protecting abrasive head according to claim 3, wherein: the cooling device is arranged on the shell (3) and comprises a water cooling jacket (4) and a handle (41) with a water injection hole, the handle (41) is fixedly sleeved on the outer side wall of the motor, a connecting hole (415) is formed in the handle (41), a pressing sleeve (5) is sleeved on the outer side of the water cooling jacket (4), a groove (42) is formed in the outer wall of the water cooling jacket (4) in a winding mode, a cooling water channel communicated with the annular cavity structure is formed between the inner side wall of the pressing sleeve (5) and the groove (42), and a notch is formed in one end of the water cooling jacket (4); a mounting sleeve (53) is inserted into the water cooling sleeve (4), the water cooling sleeve (4) is inserted into a large hole end of a step hole of the shell (3), a gap is reserved between the end surface of an insertion end of the mounting sleeve (53) and the step surface of the step hole of the shell (3), a water passing groove (331) communicated with the gap is formed, and the water passing groove (331) is also communicated with an annular cavity in the shell (3);
the outer wall of the shell (3) is provided with a circle of positioning grooves (33), the handle (41) is provided with a platform stage (411), the middle of the platform stage (411) is provided with a connecting hole (415), the step surface of the step stage (411) is provided with a water injection hole (412), one end of the water cooling jacket (4) is sleeved on the outer wall of the lower end of the platform stage (411), the other end of the water cooling jacket is sleeved on the inner wall of the large hole end of the step hole of the shell (3), one end of the pressing jacket (5) is sleeved on the outer wall of the upper end of the platform stage (411), the other end of the pressing jacket is provided with a circle of bosses corresponding to the positioning grooves (33), and the bosses are buckled in the positioning grooves (33); a water outlet groove (413) communicated with the water injection hole (412) is formed in the step surface of the stage (411), the corresponding position of the inner wall of the pressing sleeve (5) and the end surface of the sleeving end of the water cooling sleeve (4), a transition groove (414) is arranged at one end, corresponding to the water outlet groove (413), of the water cooling sleeve (4), one end of the transition groove (414) is communicated with the cooling water channel, the other end of the transition groove is communicated with the water outlet groove (413), cooling water flows into the water outlet groove (413) from the water injection hole (412), flows into the cooling water channel through the transition groove (414), and then sequentially flows into the cavity structure through the notch and the water passing groove.
5. The eccentric sheath-protecting abrasive head according to claim 4, wherein: be equipped with the step hole in water-cooling cover (4), be equipped with installation cover (53) at this step downthehole, the one end of installation cover (53) stretches into the step hole and cup joints in connecting hole (415), the lateral wall of the other end be equipped with the stair structure of step hole adaptation, this stair structure inlays and establishes in step hole position, installation cover (53) and step hole position correspond the step face of end each other the butt spacing.
6. The eccentric sheath-protecting abrasive head according to claim 4, wherein: a fixing sleeve (51) is sleeved in the mounting sleeve (53), the fixing sleeve (51) is provided with a fixing hole, the fixing hole is sleeved on the outer wall of the outer pipe (2), the grinding head handle (11) penetrates through a third supporting pipe (253), and a transmission sleeve (52) is sleeved at the penetrating end of the grinding head handle (11); the output end of the motor is connected with a guide rod (54), a connecting cylinder (541) is sleeved on the guide rod (54), and the connecting cylinder (541) is sleeved on the transmission sleeve (52).
7. An eccentric sheath-protecting abrasive head according to claim 5, wherein: a groove is formed in the outer side wall of the mounting sleeve (53), a first sealing ring (61) is embedded in the groove, and the outer side wall of the first sealing ring (61) is abutted with the corresponding position of the inner side wall of the connecting hole (415) in a fit manner; a second sealing ring (62) is embedded on the inner side wall of the water cooling sleeve (4), and the inner side wall of the second sealing ring (62) is abutted to the corresponding position of the outer wall of the lower end of the platform stage (411) in a fit mode so as to prevent cooling water from flowing into the motor.
8. The eccentric sheath-protecting abrasive head according to claim 4, wherein: the handle (41) is provided with a water injection pipe which is communicated with a water injection hole (412).
9. An eccentric sheath-protecting abrasive head according to claim 2, wherein: the bending positions of the connecting pipe (24) and the first supporting pipe (251) corresponding to the outer pipe (2) are provided with bending sections with the same bending curvature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120236584.8U CN215018430U (en) | 2021-01-28 | 2021-01-28 | Eccentric sheath-protecting grinding head |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120236584.8U CN215018430U (en) | 2021-01-28 | 2021-01-28 | Eccentric sheath-protecting grinding head |
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| Publication Number | Publication Date |
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| CN215018430U true CN215018430U (en) | 2021-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120236584.8U Active CN215018430U (en) | 2021-01-28 | 2021-01-28 | Eccentric sheath-protecting grinding head |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112890910A (en) * | 2021-01-28 | 2021-06-04 | 贵州梓锐科技有限公司 | Eccentric sheath grinding head |
| WO2024067279A1 (en) * | 2022-09-30 | 2024-04-04 | 邦士医疗科技股份有限公司 | Coolable abrasive drill for minimally invasive spine surgery |
-
2021
- 2021-01-28 CN CN202120236584.8U patent/CN215018430U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112890910A (en) * | 2021-01-28 | 2021-06-04 | 贵州梓锐科技有限公司 | Eccentric sheath grinding head |
| WO2024067279A1 (en) * | 2022-09-30 | 2024-04-04 | 邦士医疗科技股份有限公司 | Coolable abrasive drill for minimally invasive spine surgery |
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