CN213552121U - Reciprocating trepan for operation - Google Patents

Abstract

The utility model discloses an operation is with reciprocal trepan, including trepan device, support bar subassembly, reciprocating device and casing subassembly, the trepan device is including trepan head (1) and saw handle (11), reciprocating device is including input eccentric shaft (51), be connected with reciprocal frame (52) and adapter sleeve (53) of pivot (2), pivot (2) are worn to establish in the support bar subassembly, and the end of wearing to establish of this pivot (2) cup joints fixedly with saw handle (11), adapter sleeve (53) are connected with the corresponding position in the casing subassembly. The utility model discloses drive the reciprocating motion of trepan head by reciprocating device to cooling down by cooling device for trepan head, cutting the operation that the bone was handled 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

Reciprocating trepan for operation

Technical Field

The utility model relates to the technical field of medical equipment, in particular to reciprocating trepan for operation.

Background

When cutting the bone operation in the surgery operation, traditional manual 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 harms the bone lamella and get the soft tissue, and the bone tissue of excision inlays in addition and is difficult to take out in the trepan, influences the quality that the cutting was used.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a reciprocating trepan for operation convenient to take and be used for osteotomy.

The technical scheme of the utility model as follows:

a reciprocating trepan for operation comprises a trepan device, a supporting rod assembly, a reciprocating device and a shell assembly, wherein the trepan device comprises a trepan head and a saw handle, one end of the trepan head is provided with a circular ring column, sawteeth are arranged at the front end of the circular ring column along the shape of a ring, the other end of the trepan head is provided with the saw handle, a lightening hole is arranged at the position, corresponding to the position between the circular ring column and the saw handle, on the trepan head, and the front end of the lightening hole is communicated with the middle of the circular 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 reciprocating 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 trepan device to rotate in a reciprocating mode within a certain angle.

By adopting the structure, the circular saw head is sleeved on the rotating shaft by the saw handle, and the rotating shaft penetrates through the corresponding position of the supporting rod assembly and is connected with the reciprocating frame, so that the connection between the circular 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 trepan head to do reciprocating rotation along the longitudinal direction, and when the trepan head is held vertically or obliquely, the bone cutting treatment position is even in stress of 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 the cooling of the sawtooth head, preferably, the support rod assembly comprises an outer pipe sleeved outside the rotating shaft, a ring pipe with one open end is sleeved on the outer pipe, a connecting pipe is sleeved on the ring pipe, a cavity structure is formed among the outer side wall of the outer pipe, the open position of the ring 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 simplify the structure and facilitate the installation, preferably, the handle is provided with a second stage, the middle part 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 jacket is sleeved on the outer wall of the low end of the second stage, the other end of the water cooling jacket is sleeved on the outer wall of the low end of the first stage, one end of the pressing jacket is sleeved on the outer wall of the high end of the second step section, the position of the other end, corresponding to the positioning groove, is provided with a circle of boss, and the boss is buckled in the positioning groove; and a water outlet groove communicated with the water injection hole is formed on the step surface of the second 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, a transition groove is arranged at one end of the water-cooling sleeve corresponding to the water outlet 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 rotating shaft drives the trepan head to rotate in a reciprocating mode.

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 circular ring column is preferably larger than the outer diameter of the sawtooth position by 0.03-0.2 mm.

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

Has the advantages that: the utility model discloses drive the reciprocating motion of trepan head by reciprocating device to cooling is given the trepan head through casing subassembly by the cooling water, cuts the operation that the bone was handled 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 view of the trepan head, the outer tube 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 trepan 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 circular saw device, a support rod assembly, a reciprocating device, and a housing assembly, wherein the reciprocating device includes an input eccentric shaft 51, a reciprocating frame 52 connected to a rotating shaft 2, and a connecting sleeve 53, the circular saw device includes a circular saw head 1 and a saw handle 11, one end of the circular saw head 1 is provided with a circular ring column, the front end of the circular ring column is provided with saw teeth along an annular shape, the other end of the circular 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 circular saw head 1 corresponding to a position between the circular ring column and the saw handle 11, and the front end of the lightening hole is; 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 is formed among the step surface of the second stage 411, the outer wall of the lower end of the second stage 411 and the end surface of the sleeved end of the water cooling jacket 4, a transition groove 414 communicated with the cooling water channel is arranged at one end of the water cooling jacket 4 corresponding to 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 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 circular saw head 1 to reciprocate.

The lightening hole is a through hole structure with an upper opening and a lower opening, and the distance from the front end of the lightening hole to the sawtooth position is 1-3 mm, preferably 2 mm; the outer diameter of the circular 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 circular 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 passes through the front shell 33 via the connecting through hole, the outer tube 3 is sleeved on the rotating shaft 2, the trepan head 1 is sleeved on the rotating shaft 2 by the saw handle 11, a ring pipe 31 with an opening at one end is sleeved on the outer pipe 3, a connecting pipe 32 is sleeved on the ring pipe 31, the connecting pipe 32 is fixedly sleeved with the first connecting through hole 321, the outer pipe 3 is fixedly sleeved with the second connecting through hole 322, 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 form a cavity structure, the cavity structure is provided with an opening towards the direction of the trepan head 1, therefore, the connection between the trepan head 1 and the rotating shaft 2 is not influenced by the outside, meanwhile, the annular saw teeth are vertically arranged on the annular saw head 1, the middle parts of the annular saw teeth are convenient for observing the condition of the operation position, and the frame of the lightening hole is convenient for pushing and collecting bone residues.

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 circular saw head 1 to reciprocate, when the circular saw head 1 is vertically or obliquely held, bone tissue stress at the bone cutting treatment position is uniform, a wound surface is sawn neatly and stably, 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 sawing 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 trepan head 1 through 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 32 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 reciprocating trepan for operation, which is characterized in that: the circular saw device comprises a circular saw head (1) and a saw handle (11), wherein a circular ring column is arranged at one end of the circular saw head (1), sawteeth are arranged at the front end of the circular ring column along the shape of a ring, the saw handle (11) is arranged at the other end of the circular saw head (1), a lightening hole is formed in the circular saw head (1) at a position corresponding to the position between the circular ring column and the saw handle (11), and the front end of the lightening hole is communicated with the middle of the circular 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 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 circular saw device to rotate in a reciprocating mode within a certain angle.

2. A surgical reciprocating trepan as defined 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. A surgical reciprocating trepan as defined 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. A surgical reciprocating trepan as defined 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. A surgical reciprocating trepan as defined 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. A surgical reciprocating trepan as defined in claim 5, wherein: the handle (41) is provided with a water injection pipe which is communicated with a water injection hole (412).

7. A surgical reciprocating trepan as defined 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 circular saw head (1) to rotate in a reciprocating manner.

8. A surgical reciprocating trepan as defined 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. A surgical reciprocating trepan as defined in claim 1, wherein: the outer diameter of the circular column is 0.03-0.2 mm larger than the outer diameter of the sawtooth position.

10. A surgical reciprocating trepan as defined in claim 9, wherein: the inner diameter of the circular column is 0.03-0.2 mm smaller than the inner diameter of the sawtooth position.

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