CN207970116U - Pedicle of vertebral arch cropper - Google Patents
Pedicle of vertebral arch cropper Download PDFInfo
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- CN207970116U CN207970116U CN201720334981.2U CN201720334981U CN207970116U CN 207970116 U CN207970116 U CN 207970116U CN 201720334981 U CN201720334981 U CN 201720334981U CN 207970116 U CN207970116 U CN 207970116U
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- scroll saw
- expander
- guide channel
- side guide
- guiding device
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Abstract
The utility model provides a kind of pedicle of vertebral arch cropper, including：Scroll saw expander (100), scroll saw guiding device (200)；The distal end of the proximal end connection scroll saw guiding device (200) of scroll saw expander (100)；Scroll saw expander (100) has left side guide channel (101), right side guide channel (102) so that the scroll saw for sequentially passing through left side guide channel, right side guide channel can be bypassed with extending out angle and cut pedicle of vertebral arch.In Total spondylectomy art formula, it is always the difficult point performed the operation that nerve root and dural sac are also avoided damage to while cutting off pedicle of vertebral arch.In the present invention; scroll saw can with extend out angle to pedicle of vertebral arch carry out cutting block; so that the pulling force that doctor need to apply greatly reduces; effectively prevent the case where scroll saw is stuck or is pulled off; protect dura mater and nerve root; and doctor's both hands can also carry out scroll saw both ends alternately to pull force extending out angle, greatly reduce operating difficulty and operating time.
Description
Technical field
The utility model is related to surgical instruments, and in particular, to pedicle of vertebral arch cropper.
Background technology
Pedicle of vertebral arch is a part for vertebral arch, arises from centrum upper back, short and thick, rearward protrusion vertical with centrum direction,
It is merged with centrum, articular process and vertebral plate, pedicle of vertebral arch is the component part for forming intervertebral foramen, and top has one shallower to cut
Mark constitutes the lower wall of intervertebral foramen, has a deeper pedicle of vertebral arch inferior thyroid notch to constitute the upper wall of intervertebral foramen below pedicle of vertebral arch.For backbone
The surgical intervention of tumour, the interior excision of normal luggage or tumour are struck off, but usually early stage recurs after surgery.In order to improve most possibly
The local cure rate of tumor of spine and the survival rate of patient involve how to realize that the wide excision of tumor of spine or edge are cut
It removes.Wherein, the art of blocking of pedicle of vertebral arch lacks corresponding instrument, often directly scroll saw is used to be carried out around pedicle of vertebral arch in previous operation
Cutting, still, since width spaces are more narrow in surgical procedure, the left and right section of scroll saw is based on being in parallel position so that cuts
It cuts resistance to sharply increase, doctor carrys out moving-wire saw difficulty, and scroll saw is easy to be stuck among pedicle of vertebral arch, causes operating time difficult with operation
Degree increases.Also have the disconnected method of pedicle of vertebral arch chisel using pedicle of vertebral arch chisel, but the risk for damaging dural sac and nerve root is larger.
Utility model content
For the defects in the prior art, the purpose of this utility model is to provide a kind of pedicle of vertebral arch cropper.
According to a kind of pedicle of vertebral arch cropper provided by the utility model, including：Scroll saw expander, scroll saw guiding device；
The distal end of the proximal end connection scroll saw guiding device of scroll saw expander；
Scroll saw expander has left side guide channel, right side guide channel so that sequentially passes through left side guide channel, right side
The scroll saw of guide channel can be bypassed with extending out angle and cut pedicle of vertebral arch.
Preferably, including scroll saw, wherein scroll saw includes scroll saw left part, scroll saw right part；
Scroll saw left part is through in scroll saw guiding device, left side guide channel；
Scroll saw right part is through in scroll saw guiding device, right side guide channel.
Preferably, the width between left side guide channel and right side guide channel is more than the width of scroll saw guiding device.
Preferably, it is removably connected between scroll saw expander and scroll saw guiding device, scroll saw guiding device has hollow
Guiding channel is provided with the guide post axially extended in hollow guiding channel；Hollow guiding channel is flat；On the left of scroll saw
Partly, scroll saw right part is through in hollow guiding channel and is respectively in the arranged on left and right sides of guide post.
Preferably, scroll saw expander includes expander shell, rotating disc, rotation axis；
Rotating disc is mounted on expander enclosure by rotation axis；
Gap between rotating disc left end and expander shell inner left wall forms the left side guide channel；
Gap on the right side of rotating disc right end and expander shell between inner wall forms the right side guide channel；
The distal face of expander shell is cancave cambered surface.
Preferably, rotating disc includes top rotary table, turntable, lower rotary table；
It is coaxially disposed between top rotary table, turntable, lower rotary table；
The diameter of top rotary table is equal with the diameter of lower rotary table, and is slightly less than expander shell inner left wall and expander shell
Width between the inner wall of right side；
The diameter of turntable is less than the diameter of top rotary table；
Gap between the left end and expander shell inner left wall of turntable forms the left side guide channel；
Gap on the right side of the right end and expander shell of turntable between inner wall forms the right side guide channel.
Preferably, the distal end of expander shell inner left wall is provided with left lasso, the distal end of expander shell right side inner wall
It is provided with right lasso；
Left lasso, right lasso are each perpendicular to far and near extreme direction；
The middle part of expander shell inner left wall is smoothly connected by left cancave cambered surface to left lasso segmentum laterale；
The middle part of inner wall is smoothly connected by right cancave cambered surface to right lasso segmentum laterale on the right side of expander shell
Scroll saw is strutted to extend out angle by left lasso medial segment and right lasso medial segment.
Preferably, the proximal port of scroll saw guiding device is horn mouth；
The left and right inner wall of scroll saw guiding device is respectively arranged with and the matched left side guiding groove of scroll saw, right side guiding groove；
Left side guiding groove, right side guiding groove extend to bell-mouthed extension mouth by the distal end of scroll saw guiding device.
Preferably, scroll saw includes sequentially connected left drawing ring, left steel wire section, cut length, right steel wire section, right draw ring；
It is cased with grip sleeve on left drawing ring, right draw ring, grip sleeve is made of elastic material；
Left steel wire section, the surface of right steel wire section are smooth.
Preferably, extend multiple tracks bulge loop line in the middle part at the middle part of left steel wire section, right steel wire section.
Compared with prior art, the utility model has following advantageous effect：
In the present invention, scroll saw can with extend out angle to pedicle of vertebral arch carry out cutting block so that doctor needs to apply
Pulling force greatly reduce, effectively prevent the case where scroll saw is stuck or is pulled off, and doctor's both hands can also extend out
Angle carries out scroll saw both ends alternately to pull force, greatly reduces operating difficulty and operating time.This utility model can be adjusted
The direction of whole surgical procedure, convenient for the implementation of operation.
Description of the drawings
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other spies of the utility model
Sign, objects and advantages will become more apparent upon：
Fig. 1, Fig. 2 are the cutting angle of scroll saw in the prior art.
Fig. 3 is the structural schematic diagram of pedicle of vertebral arch cropper provided by the utility model.
Fig. 4 is the view along the directions A-A in Fig. 3.
Fig. 5 is the schematic diagram that scroll saw is concealed in Fig. 4.
Fig. 6 is the view along the directions B-B in Fig. 3.
Fig. 7 is the schematic diagram that scroll saw is concealed in Fig. 6.
Fig. 8 is the structural schematic diagram of scroll saw dilator distal portion in preference.
Fig. 9 is the structural schematic diagram of scroll saw.
Figure 10 is the structural schematic diagram of burr ring on scroll saw.
It is shown in figure：
Specific implementation mode
The utility model is described in detail with reference to specific embodiment.Following embodiment will be helpful to this field
Technical staff further understands the utility model, but does not limit the utility model in any form.It should be pointed out that ability
For the those of ordinary skill in domain, without departing from the concept of the premise utility, several changes and improvements can also be made.
These belong to the scope of protection of the utility model.
The shortcoming for blocking scheme to pedicle of vertebral arch in the prior art first illustrates.As shown in Figure 1, scroll saw 300 exists
After pedicle of vertebral arch 900, the both ends of scroll saw 300 are back and forth pulled by doctor, to which scroll saw 300 cuts pedicle of vertebral arch 900
It is disconnected to block.But due to wound size etc., part of the scroll saw 300 in doctor's hand is often parallel, and scroll saw
300 in left and right two parts close to pedicle of vertebral arch 900 be also parallel, this leads to two deficiencies.On the one hand, two hand of doctor is difficult to
It exerts a force in parallel direction.On the other hand, more seriously, the Cutting Drag between scroll saw 300 and pedicle of vertebral arch 900 is larger, past
Toward cause scroll saw 300 be stuck in pedicle of vertebral arch 900 draw less than in addition scroll saw 300 be pulled off.In some cases, as shown in Fig. 2, phase
Than the Cutting Drag bigger in the case of Fig. 1.
It should be noted that in practice, scroll saw 300 should touch pedicle of vertebral arch 900 and could be cut, but in order to
The shape that scroll saw 300 can be clearly embodied in figure, avoids the coincidence between lines, specially by the position of scroll saw 300 in figure
It sets and slightly moves, overlapped to avoid with other lines, this does not influence the substantive content of the utility model.
For this purpose, utility model people combines experience when row operation to be created to obtain the utility model, in order to reduce operation
Difficulty and operating time, the utility model provide a kind of pedicle of vertebral arch cropper.In the present invention, scroll saw can be to extend out
Angle to pedicle of vertebral arch carry out cutting block so that the pulling force that doctor need to apply greatly reduces, effectively prevent scroll saw be stuck or
The case where person is pulled off, and doctor's both hands can also carry out scroll saw both ends alternately to pull force extending out angle, greatly subtract
Operating difficulty and operating time are lacked.
Just pedicle of vertebral arch cropper provided by the utility model is illustrated below.
According to a kind of pedicle of vertebral arch cropper provided by the utility model, including：Scroll saw expander 100, scroll saw guiding device
200, scroll saw 300；The distal end of the proximal end connection scroll saw guiding device 200 of scroll saw expander 100；Scroll saw expander 100 has left side
Guide channel 101, right side guide channel 102 so that sequentially pass through the scroll saw of left side guide channel 101, right side guide channel 102
300, it can be bypassed with extending out angle and cut pedicle of vertebral arch 900.Scroll saw 300 includes scroll saw left part 301, scroll saw right part
302；Scroll saw left part 301 is through in scroll saw guiding device 200, left side guide channel 101；Scroll saw right part 302 is through line
It saws in guiding device 200, right side guide channel 102.Width between left side guide channel 101 and right side guide channel 102 is more than
The width of scroll saw guiding device 200.It is removably connected between scroll saw expander 100 and scroll saw guiding device 200, scroll saw guiding
Device 200 has hollow guiding channel 201, and the guide post 202 axially extended is provided in hollow guiding channel 201；It is hollow to draw
Pathway 201 is flat；Scroll saw left part 301, scroll saw right part 302 are through in hollow guiding channel 201 and divide
It is listed in the arranged on left and right sides of guide post 202.
Scroll saw expander 100 includes expander shell 103, rotating disc 104, rotation axis 105；Rotating disc 104 passes through rotation
Axis 105 is mounted on inside expander shell 103；Gap between rotating disc left end 1041 and expander shell inner left wall 1031
Form the left side guide channel 101；Gap on the right side of rotating disc right end 1042 and expander shell between inner wall 1032 is formed
The right side guide channel 102；The distal face of expander shell 103 is cancave cambered surface 1030.Rotating disc 104 includes top rotary table
1043, turntable 1044, lower rotary table 1045；It is coaxially disposed between top rotary table 1043, turntable 1044, lower rotary table 1045；It is upper to turn
The diameter of disk 1043 is equal with the diameter of lower rotary table 1045, and is slightly less than expander shell inner left wall 1031 and expander shell
Width between right side inner wall 1032；The diameter of turntable 1044 is less than the diameter of top rotary table 1043；The left end of turntable 1044
Gap between expander shell inner left wall 1031 forms the left side guide channel 101；The right end of turntable 1044 with
Gap on the right side of expander shell between inner wall 1032 forms the right side guide channel 102.Expander shell inner left wall
1031 distal end is provided with left lasso 106, and the distal end of expander shell right side inner wall 1032 is provided with right lasso 107；Left lasso
106, right lasso 107 is each perpendicular to far and near extreme direction；The middle part of expander shell inner left wall 1031 is flat by left cancave cambered surface 108
Slip is to left lasso segmentum laterale 1061；The middle part of inner wall 1032 is smoothly connected by right cancave cambered surface 109 on the right side of expander shell
It is strutted to 1071 scroll saw 300 of right lasso segmentum laterale by left lasso medial segment and right lasso medial segment to extend out angle.
The proximal port of scroll saw guiding device 200 is horn mouth 203；The left and right inner wall of scroll saw guiding device 200 be respectively arranged with
300 matched left side guiding groove 204 of scroll saw, right side guiding groove 205；Left side guiding groove 204, right side guiding groove 205 are by scroll saw
The distal end of guiding device 200 extends at the extension mouth of horn mouth 203.
Scroll saw 300 includes sequentially connected left drawing ring 303, left steel wire section 304, cut length 305, right steel wire section 306, right drawing
Ring 307；Grip sleeve 308 is cased on left drawing ring 303, right draw ring 307, grip sleeve 308 is made of elastic material；Left steel wire section
304, the surface of right steel wire section 306 is smooth.Extend multiple tracks bulge loop in the middle part at the middle part of left steel wire section 304, right steel wire section 306
Line 309.
The operation principle of the utility model is illustrated below.
As shown in Figure 3, Figure 4, scroll saw 300 enters scroll saw guiding device 200 from horn mouth 203, is worn by left side guiding groove 204
Go out scroll saw guiding device 200, then penetrates left side guide channel 101, left lasso 106 is passed through under the guiding of left cancave cambered surface 108, is connect
The scroll saw 300 that gets off penetrates right lasso 107 around pedicle of vertebral arch 900, and right side guide channel is passed through under the guiding of right cancave cambered surface 109
102, subsequently by right side guiding groove 205, it is pierced by from horn mouth 203.Doctor back and forth pulls in the proximal direction of horn mouth 203
Scroll saw 300, since the width distance between left side guide channel 101 and right side guide channel 102 is more than the length of pedicle of vertebral arch long axis
Degree, therefore, scroll saw 300 can be bypassed with extending out angle and cut pedicle of vertebral arch 900.After doctor pulls scroll saw 300, scroll saw 300
Rotating disc 104 is driven to rotate, to reduce friction of the scroll saw 300 on extension path while keeping scroll saw to extend out angle
Power.Wherein, it is provided with bulge loop line 309 on scroll saw 300, if doctor pulls the single length of scroll saw 300 excessive, bulge loop line 309
It will occur to rub with the opening's edge of horn mouth 203 and send out the sound, to play reminding effect.
Specific embodiment of the utility model is described above.It is to be appreciated that the utility model not office
It is limited to above-mentioned particular implementation, those skilled in the art can make a variety of changes or change within the scope of the claims,
This has no effect on the substantive content of the utility model.In the absence of conflict, the spy in embodiments herein and embodiment
Sign can be arbitrarily combined with each other.
Claims (1)
1. a kind of pedicle of vertebral arch cropper, which is characterized in that including：Scroll saw expander (100), scroll saw guiding device (200)；
The distal end of the proximal end connection scroll saw guiding device (200) of scroll saw expander (100)；
Scroll saw expander (100) has left side guide channel (101), right side guide channel (102) so that sequentially passes through left side and leads
To channel (101), the scroll saw (300) of right side guide channel (102), it can be bypassed with extending out angle and cut pedicle of vertebral arch (900)；
Including scroll saw (300), wherein scroll saw (300) includes scroll saw left part (301), scroll saw right part (302)；
Scroll saw left part (301) is through in scroll saw guiding device (200), left side guide channel (101)；
Scroll saw right part (302) is through in scroll saw guiding device (200), right side guide channel (102)；
Width between left side guide channel (101) and right side guide channel (102) is more than the width of scroll saw guiding device (200)；
It is removably connect between scroll saw expander (100) and scroll saw guiding device (200), scroll saw guiding device (200) has
Hollow guiding channel (201), hollow guiding channel (201) is interior to be provided with the guide post (202) axially extended；Hollow guiding is logical
Road (201) is flat；Scroll saw left part (301), scroll saw right part (302) are through in hollow guiding channel (201)
And it is respectively in the arranged on left and right sides of guide post (202)；
Scroll saw expander (100) includes expander shell (103), rotating disc (104), rotation axis (105)；
Rotating disc (104) is mounted on expander shell (103) inside by rotation axis (105)；
Gap between rotating disc left end (1041) and expander shell inner left wall (1031) forms the left side guide channel
(101)；
Gap on the right side of rotating disc right end (1042) and expander shell between inner wall (1032) forms the right side guide channel
(102)；
The distal face of expander shell (103) is cancave cambered surface (1030)；
Rotating disc (104) includes top rotary table (1043), turntable (1044), lower rotary table (1045)；
Top rotary table (1043), turntable (1044), lower rotary table are coaxially disposed between (1045)；
The diameter of top rotary table (1043) is equal with the diameter of lower rotary table (1045), and is slightly less than expander shell inner left wall
(1031) width between expander shell right side inner wall (1032)；
The diameter of turntable (1044) is less than the diameter of top rotary table (1043)；
Gap between the left end and expander shell inner left wall (1031) of turntable (1044), which forms the left side and is oriented to, to be led to
Road (101)；
Gap on the right side of the right end and expander shell of turntable (1044) between inner wall (1032), which forms the right side and is oriented to, to be led to
Road (102)；
The distal end of expander shell inner left wall (1031) is provided with left lasso (106), expander shell right side inner wall (1032)
Distal end be provided with right lasso (107)；
Left lasso (106), right lasso (107) are each perpendicular to far and near extreme direction；
The middle part of expander shell inner left wall (1031) is smoothly connected by left cancave cambered surface (108) to left lasso segmentum laterale
(1061)；
The middle part of inner wall (1032) is smoothly connected by right cancave cambered surface (109) to right lasso segmentum laterale on the right side of expander shell
(1071)
Scroll saw (300) is strutted to extend out angle by left lasso medial segment and right lasso medial segment；
The proximal port of scroll saw guiding device (200) is horn mouth (203)；
The left and right inner wall of scroll saw guiding device (200) is respectively arranged with and the matched left side guiding groove (204) of scroll saw (300), right side
Guiding groove (205)；
Left side guiding groove (204), right side guiding groove (205) extend to horn mouth (203) by the distal end of scroll saw guiding device (200)
Extension mouth at；
Scroll saw (300) includes sequentially connected left drawing ring (303), left steel wire section (304), cut length (305), right steel wire section
(306), right draw ring (307)；
Grip sleeve (308) is cased on left drawing ring (303), right draw ring (307), grip sleeve (308) is made of elastic material；
Left steel wire section (304), the surface of right steel wire section (306) are smooth；
Extend multiple tracks bulge loop line (309) in the middle part at the middle part of left steel wire section (304), right steel wire section (306).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720334981.2U CN207970116U (en) | 2017-03-31 | 2017-03-31 | Pedicle of vertebral arch cropper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720334981.2U CN207970116U (en) | 2017-03-31 | 2017-03-31 | Pedicle of vertebral arch cropper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207970116U true CN207970116U (en) | 2018-10-16 |
Family
ID=63770189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720334981.2U Active CN207970116U (en) | 2017-03-31 | 2017-03-31 | Pedicle of vertebral arch cropper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207970116U (en) |
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2017
- 2017-03-31 CN CN201720334981.2U patent/CN207970116U/en active Active
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