CN213525341U - Semi-ring saw for operation - Google Patents

Abstract

The utility model discloses a semi-ring saw for operation, which comprises a ring saw device and a cooling device, wherein the semi-ring saw device comprises a semi-ring saw head (1), a rotating shaft (2) and an outer tube (3), and the rotating shaft (2) is connected with a reciprocating device; the cooling device comprises a water cooling jacket (4) and a handle (41) with a water injection hole, wherein a pressing sleeve (5) is sleeved on the outer side of the water cooling jacket (4), and a groove (42) is formed in the outer wall of the water cooling jacket (4) in a winding mode. The utility model discloses drive the reciprocal rotation of semi-ring saw head by reciprocating device to by the cooling device for the cooling of semi-ring saw head, carry out the operation of cutting the bone and handling from this, simple structure, the simple operation has simplified mounting structure, has alleviateed weight, has reduced the space that occupies, and stability is high, and the security is good.

Description

Semi-ring saw for operation

Technical Field

The utility model relates to the technical field of medical equipment, in particular to semi-ring saw is used in operation.

Background

When cutting the bone operation in the surgery operation, traditional manual half trepan is inefficient, inconveniently observes the operation position, and the dynamics is not controlled well for the difficult excision of the relatively poor bone tissue of toughness around the operation position still leads to the fact the damage to the better soft tissue of toughness around easily, breaks through behind the hone lamella and damages the bone lamella and get the soft tissue, and the bone tissue of excision inlays in half trepan and is difficult to take out moreover.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a semi-ring saw for operation convenient to reciprocal osteotomy.

The technical scheme of the utility model as follows:

a semi-ring saw for operation comprises a ring saw device, a supporting rod assembly, a reciprocating device and a shell assembly, wherein the ring saw device comprises a semi-ring saw head and a saw handle, one end of the semi-ring saw head is provided with a semi-ring column, sawteeth are arranged at the front end of the semi-ring column along the shape of a ring, the other end of the semi-ring saw head is provided with the saw handle, a lightening hole is arranged at a position, corresponding to the position between the semi-ring column and the saw handle, on the semi-ring saw head, and the front end of the lightening hole is communicated with the semi-ring column; the reciprocating device comprises an input eccentric shaft, a reciprocating frame connected with a rotating shaft and a connecting sleeve, the rotating shaft is arranged in the supporting rod assembly in a penetrating mode, the penetrating end of the rotating shaft is fixedly sleeved with the saw handle, and the connecting sleeve is connected with a corresponding position in the shell assembly; when the semi-ring saw is used, the input eccentric shaft rotates in one direction to drive the reciprocating frame to swing in a reciprocating mode and drive the semi-ring saw head to rotate in a reciprocating mode within a certain angle.

By adopting the structure, the semi-ring saw head is sleeved on the rotating shaft by the saw handle, and the rotating shaft penetrates through the corresponding position of the support rod assembly to be connected with the reciprocating frame, so that the connection between the semi-ring saw head and the reciprocating frame is not influenced by the outside; in addition, the arranged shell component is convenient for holding operation in an operation, and the connection of the connecting sleeve and the corresponding position in the shell component can avoid use interference; the reciprocating device drives the semi-ring saw head to do reciprocating rotation along the longitudinal direction, and when the semi-ring saw head is held vertically or obliquely, the bone cutting treatment position is even in stress due to bone tissues, the sawing wound surface is neat and stable, the treatment effect of bone tissue grinding or repairing can be improved, the wound can be recovered faster, the sawing depth and width can be well controlled, the operation is convenient, and the installation is convenient.

In order to facilitate cooling of the sawtooth head position, preferably, the support rod assembly comprises an outer pipe sleeved outside the rotating shaft, an annular pipe with one open end is sleeved on the outer pipe, a connecting pipe is sleeved on the annular pipe, a cavity structure is formed among the outer side wall of the outer pipe, the open position of the annular pipe and the inner wall of the connecting pipe, the outer pipe and the connecting pipe are sleeved on the front shell, and the rotating shaft penetrates through the front shell and is connected with the reciprocating frame; the shell assembly comprises a water cooling jacket and a handle with a water injection hole, 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 formed in the outer wall of the water cooling jacket in a winding mode, and a cooling water channel communicated with the cavity structure is formed between the inner side wall of the pressing sleeve and the groove.

In order to simplify the structure and be convenient for derive the cooling water, as preferred one end on the preceding shell is equipped with the first connect through hole who cup joints fixed connection pipe, and the other end is equipped with the second connect through hole who cup joints fixed outer tube, and the one end of this preceding shell is equipped with first stage, the eminence end in first stage is equipped with the round constant head tank, and the low end in this first stage is equipped with the apopore water cooling is sheathe in and is equipped with the breach that communicates with the cooling water course corresponding position department of apopore.

In order to facilitate the disassembly and assembly, the mounting structure is simplified, preferably, the handle is provided with a second stage, the middle of the second stage is provided with a connecting hole, the step surface of the second stage is provided with a water injection hole, one end of the water cooling sleeve is sleeved on the outer wall of the lower end of the second stage, the other end of the water cooling sleeve is sleeved on the outer wall of the lower end of the first stage, one end of the pressing sleeve is sleeved on the outer wall of the higher end of the second step section, the other end of the pressing sleeve is provided with a circle of boss corresponding to the positioning groove, and the boss is buckled in the positioning groove; 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 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 outlet hole.

In order to avoid leakage of cooling water, preferably, a sealing ring is embedded on the inner side wall of the water cooling jacket, and the inner side wall of the sealing ring is abutted against the corresponding position of the outer wall of the lower end of the second step section to seal the position of the water outlet groove.

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.

In order to facilitate the disassembly and assembly, the mounting structure is simplified, preferably, a step hole is formed in the water cooling sleeve, one end of the connecting 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 connecting sleeve, the step structure is embedded in the step hole, and step surfaces of corresponding ends are mutually abutted and limited; a through groove is formed in the reciprocating frame, a first bearing fixedly arranged in a connecting sleeve is arranged at the output end of the input eccentric shaft in a penetrating manner, an eccentric shaft horizontally extending outwards is further arranged at the output end of the input eccentric shaft, a second bearing is sleeved on the eccentric shaft and hung in the through groove, the input end of the input eccentric shaft penetrates through a connecting sleeve and is connected with the output end of a motor, and a handle is fixedly sleeved on the outer side wall of the motor; under the drive of the motor, the rotation of the eccentric shaft drives the second bearing to rotate in the through groove of the reciprocating frame and transmit the rotation to the reciprocating frame, the reciprocating frame is driven to reciprocate in the vertical direction, and the support rod drives the semi-ring saw head to rotate in a reciprocating manner.

For the convenience of improving the stress strength of the sawteeth simultaneously in the machining process, the lightening holes are preferably through hole structures with upper and lower openings, and the distance between the front ends of the lightening holes and the sawteeth is 1-3 mm.

In order to avoid the use interference of the outer side of the sawtooth, the outer diameter of the semicircular column is preferably 0.03-0.2 mm larger than the outer diameter of the sawtooth position.

In order to avoid the use interference of the inner side of the saw tooth, the inner diameter of the semicircular column is preferably smaller than the inner diameter of the saw tooth position by 0.03-0.2 mm.

Has the advantages that: the utility model discloses drive the reciprocal rotation of semi-ring saw head by reciprocating device to by the cooling water for the cooling of semi-ring saw head through casing subassembly, carry out the operation of cutting the bone and handling from this, simple structure, the simple operation 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 an exploded view of the structure of the present invention.

Fig. 2 is a schematic view of the installation structure of the present invention.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Fig. 4 is an enlarged view of fig. 2 at B.

Fig. 5 is a schematic structural diagram of the semi-ring saw head, the outer pipe and the front shell.

Fig. 6 is an enlarged view of fig. 5 at C.

Fig. 7 is an exploded view of the installation structure of the support rod and the outer tube.

Fig. 8 is a schematic structural view of the half-ring saw head.

FIG. 9 is a schematic diagram of the structure of a water jacket.

Fig. 10 is a schematic structural view of the front case.

Fig. 11 is a schematic structural view of the handle.

Fig. 12 is a use state diagram of the reciprocation frame.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in 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 present invention includes a trepan apparatus, a support rod assembly, a reciprocating apparatus, and a housing assembly, wherein the reciprocating apparatus includes an input eccentric shaft 51, a reciprocating frame 52 connected to a rotating shaft 2, and a connecting sleeve 53, the trepan apparatus includes a half-ring saw head 1 and a saw handle 11, one end of the half-ring saw head 1 is provided with a half-ring column, the front end of the half-ring saw head is provided with saw teeth along an annular shape, the other end of the half-ring saw head 1 is provided with a saw handle 11 fixed to the rotating shaft 2 in a sleeved manner, a lightening hole is provided at a position on the half-ring saw head 1 corresponding to a position between the half-ring column and the saw; the support rod assembly comprises an outer tube 3 sleeved outside the rotating shaft 2, a ring tube 31 with one open end is sleeved on the outer tube 3, a connecting tube 32 is sleeved on the ring tube 31, and a cavity structure is formed among the outer side wall of the outer tube 3, the open position of the ring tube 31 and the inner wall of the connecting tube 32.

The shell assembly comprises a water cooling jacket 4 and a handle 41 with a water injection hole, a connecting hole 415 is formed in 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, and a cooling water channel communicated with a cavity structure is formed between the inner side wall of the pressing jacket 5 and the groove 42; one end of the front shell 33 is provided with a first connecting through hole 321 which is sleeved and fixed with the connecting pipe 32, the other end of the front shell 33 is provided with a second connecting through hole 322 which is sleeved and fixed with the outer pipe 3, one end of the front shell 33 is provided with a first stage 331, the high end of the first stage 331 is provided with a circle of positioning grooves 332, the low end of the first stage 331 is provided with a water outlet hole 333, and a position of the water cooling jacket 4 corresponding to the water outlet hole 333 is provided with a notch communicated with the cooling water channel.

A second stage 411 is arranged on the handle 41, a connecting hole 415 is arranged in the middle of the second stage 411, a water injection hole 412 is arranged on the step surface of the second 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 second stage 411, the other end of the water cooling sleeve is sleeved on the outer wall of the lower end of the first stage 331, one end of the pressing sleeve 5 is sleeved on the outer wall of the upper end of the second stage 411, a circle of boss is arranged at the position of the other end corresponding to the positioning groove 332, and the boss is buckled in the positioning groove 332; a water outlet groove 413 communicated with the water injection hole 412 is formed on 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 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 through the water injection hole 412, flows into the cooling water channel through the transition groove 414, sequentially flows into the cavity structure through the notch and the water outlet hole 333.

And a sealing ring 43 is embedded on the inner side wall of the water cooling jacket 4, and 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 second stage 411 to seal the position of the water outlet groove 413.

A step hole is formed in the water cooling jacket 4, one end of the connecting sleeve 53 extends into the step hole and is sleeved in the connecting hole 415, a step structure matched with the step hole is arranged on the outer side wall of the other end of the connecting sleeve, the step structure is embedded in the step hole, and step surfaces of corresponding ends are mutually abutted and limited; a through groove is formed in the reciprocating frame 52, a first bearing 512 fixedly arranged in the connecting sleeve 53 is arranged at the output end of the input eccentric shaft 51 in a penetrating manner, an eccentric shaft 511 horizontally extending outwards is further arranged at the output end of the input eccentric shaft 51, a second bearing 513 is sleeved on the eccentric shaft 511, the second bearing 513 is hung in the through groove, the input end of the input eccentric shaft 51 penetrates through the connecting sleeve 53 and is connected with the output end of the motor, and the outer side wall of the motor is sleeved with the inherent handle 41; under the driving of the motor, the rotation of the eccentric shaft 511 drives the second bearing 513 to rotate in the through groove of the reciprocating frame 52 and transmit the rotation to the reciprocating frame 52, so as to drive the reciprocating frame 52 to reciprocate in the vertical direction, and the rotating shaft 2 drives the semi-ring saw head 1 to reciprocate.

The lightening hole is a through hole structure with an upper opening and a lower opening, and the distance between the front end of the lightening hole and the sawtooth position is 1-3 mm, and preferably 2 mm; the outer diameter of the semicircular column is 0.03-0.2 mm larger than the outer diameter of the sawtooth position, and preferably 0.2 mm; the inner diameter of the semicircular ring column is 0.03-0.2 mm smaller than that of the sawtooth position, and preferably 0.1 mm.

The utility model discloses a use method as follows:

as shown in fig. 1 to 8, the rotating shaft 2 of the reciprocating frame 52 penetrates through the front shell 33 through the connecting through hole, the outer tube 3 is sleeved on the rotating shaft 2, the semi-ring saw head 1 is sleeved on the rotating shaft 2 through the connecting rod 11, the outer tube 3 is sleeved with the ring tube 31 with an opening at one end, the ring tube 31 is sleeved with the connecting tube 32, the connecting tube 32 is sleeved and fixed with the first connecting through hole 321, the outer tube 3 is sleeved and fixed with the second connecting through hole 322, a cavity structure is formed between the outer side wall of the outer tube 3, the opening position of the ring tube 31 and the inner wall of the connecting tube 32, and the cavity structure is provided with an opening facing the semi-ring saw head 1, so that the connection between the semi-ring saw head 1 and the rotating shaft is not affected by the outside, meanwhile, the middle part of the semi-ring saw head 1 is convenient.

A motor (not marked) is started, the input eccentric shaft 51 drives the eccentric shaft 511 to rotate, the eccentric shaft 511 is sleeved with a second bearing (513), the second bearing 513 is sleeved in a through groove of the reciprocating frame 52, the eccentric shaft 511 eccentrically rotates to drive the second bearing 513 to slide and match in the through groove, so that the reciprocating frame 52 is driven to reciprocate leftwards and rightwards in the circumferential direction (namely clockwise and anticlockwise directions shown in a state and a state of a in fig. 12), namely, the rotating shaft 2 drives the semi-ring saw head 1 to reciprocate, when the semi-ring saw head 1 is held vertically or obliquely, bone tissue stress at the bone cutting treatment position is uniform, a cut wound surface is neat and stable, the bone tissue treatment is more stable, the treatment effect of bone tissue grinding or repairing can be improved, the wound recovery is quicker, and the cutting depth and width can be well controlled.

Meanwhile, as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 9, fig. 10 and fig. 11, a pressing sleeve 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 the cavity structure is formed between the inner side wall of the pressing sleeve 5 and the groove 42, and in order to improve the cooling efficiency, a spiral groove 42 is formed on the outer wall of the water cooling jacket 4, that is, a spiral cooling water channel is formed together with the pressing sleeve 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), flows into the water outlet groove 413 through the water injection hole 412, flows into the cooling water channel through the aqueduct 414, sequentially flows into the cavity structure through the gap and the water outlet hole 333, and is sprayed to the working part of the half-ring saw head 1 from the opening of the cavity structure, and the temperature of the front shell 33, the ring pipe 31 and the outer pipe 3 can be cooled in the process.

A sealing ring 43 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 second stage 411, and the position of the water outlet groove 413 is sealed; in addition, outer tube 3 and connecting pipe 3 all cup joint on preceding shell 33, and two connect the through-hole and apopore 333 positions form airtight space in the direction of flowing out, and the cooling water can only flow out and can not be excessive along the cavity structure, guarantees the stability in use of cooling water.

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 (10)

1. A surgical trepan is characterized in that: the ring saw device comprises a semi-ring saw head (1) and a saw handle (11), wherein a semi-ring column is arranged at one end of the semi-ring saw head (1), sawteeth are arranged at the front end of the semi-ring column along the shape of a ring, the saw handle (11) is arranged at the other end of the semi-ring saw head (1), a lightening hole is formed in the semi-ring saw head (1) at a position corresponding to the position between the semi-ring column and the saw handle (11), and the front end of the lightening hole is communicated with the semi-ring column; the reciprocating device comprises an input eccentric shaft (51), a reciprocating frame (52) connected with a rotating shaft (2) and a connecting sleeve (53), the rotating shaft (2) is arranged in the supporting rod assembly in a penetrating mode, the penetrating end of the rotating shaft (2) is fixedly sleeved with the saw handle (11), and the connecting sleeve (53) is connected with the corresponding position in the shell assembly; when the semi-circular saw is used, the input eccentric shaft (51) rotates in one direction to drive the reciprocating frame (52) to swing in a reciprocating mode and drive the semi-circular saw head (1) to rotate in a reciprocating mode within a certain angle.

2. The surgical half-ring saw as set forth in claim 1, wherein: the supporting rod assembly comprises an outer pipe (3) sleeved outside the rotating shaft (2), a ring pipe (31) with one open end is sleeved on the outer pipe (3), a connecting pipe (32) is sleeved on the ring pipe (31), a cavity structure is formed among the outer side wall of the outer pipe (3), the opening position of the ring pipe (31) and the inner wall of the connecting pipe (32), the outer pipe (3) and the connecting pipe (32) are sleeved on the front shell (33), and the rotating shaft (2) penetrates through the front shell (33) and is connected with the reciprocating frame (52); the shell assembly comprises a water cooling jacket (4) and a handle (41) with a water injection hole, wherein a connecting hole (415) is formed in the handle (41), a pressing jacket (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, and 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) jointly.

3. The surgical half-ring saw as claimed in claim 2, wherein: one end on preceding shell (33) is equipped with first connect through hole (321) that cup joints fixed connection pipe (32), and the other end is equipped with second connect through hole (322) that cup joints fixed outer tube (3), and the one end of this preceding shell (33) is equipped with first stage (331), the eminence end of first stage (331) is equipped with round constant head tank (332), and the low end of this first stage (331) is equipped with apopore (333) the position department that corresponds apopore (333) on water-cooling jacket (4) is equipped with the breach that communicates with the cooling water course.

4. The surgical half-ring saw as claimed in claim 3, wherein: a second stage (411) is arranged on the handle (41), a connecting hole (415) is formed in the middle of the second stage (411), a water injection hole (412) is formed in the step surface of the second stage (411), one end of the water cooling jacket (4) is sleeved on the outer wall of the lower end of the second stage (411), the other end of the water cooling jacket is sleeved on the outer wall of the lower end of the first stage (331), one end of the pressing jacket (5) is sleeved on the outer wall of the higher end of the second stage (411), a circle of boss is arranged at the position, corresponding to the positioning groove (332), of the other end of the pressing jacket (5), and the boss is buckled in the positioning groove (332); a water outlet groove (413) communicated with the water injection hole (412) is formed in 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, 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 flows into the cavity structure through the notch and the water outlet hole (333) in sequence.

5. The surgical half-ring saw as claimed in claim 4, wherein: and a sealing ring (43) is embedded on the inner side wall of the water cooling sleeve (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 second stage (411), and the position of the water outlet groove (413) is sealed.

6. The surgical half-ring saw as claimed in claim 5, wherein: the handle (41) is provided with a water injection pipe which is communicated with a water injection hole (412).

7. The surgical half-ring saw as claimed in claim 2, wherein: a step hole is formed in the water cooling sleeve (4), one end of the connecting sleeve (53) extends into the step hole and is sleeved in the connecting hole (415), a step structure matched with the step hole is arranged on the outer side wall of the other end of the connecting sleeve, the step structure is embedded in the step hole, and step surfaces of corresponding ends are mutually abutted and limited; a through groove is formed in the reciprocating frame (52), a first bearing (512) fixedly arranged in the connecting sleeve (53) is sleeved at the input end of the input eccentric shaft (51), an eccentric shaft (511) horizontally extending outwards is further arranged at the output end of the input eccentric shaft (51), a second bearing (513) is sleeved on the eccentric shaft (511), the second bearing (513) is hung in the through groove, the input end of the input eccentric shaft (51) penetrates through the connecting sleeve (53) and is connected with the output end of the motor, and a handle (41) is fixedly sleeved on the outer side wall of the motor; under the drive of the motor, the rotation of the eccentric shaft (511) drives the second bearing (513) to rotate in the through groove of the reciprocating frame (52) and transmit the rotation to the reciprocating frame (52), so that the reciprocating frame (52) is driven to reciprocate in the vertical direction, and the rotating shaft (2) drives the semi-ring saw head (1) to rotate in a reciprocating manner.

8. The surgical half-ring saw as set forth in claim 1, wherein: the lightening hole is of a through hole structure with an upper opening and a lower opening, and the distance between the front end of the lightening hole and the sawtooth position is 1-3 mm.

9. The surgical half-ring saw as set forth in claim 1, wherein: the outer diameter of the semicircular column is 0.03-0.2 mm larger than the outer diameter of the sawtooth position.

10. The surgical half-ring saw as claimed in claim 9, wherein: the inner diameter of the semicircular ring column is 0.03-0.2 mm smaller than the inner diameter of the sawtooth position.

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