CN203662879U - Gun-type cervical vertebra lamina door opener - Google Patents
Gun-type cervical vertebra lamina door opener Download PDFInfo
- Publication number
- CN203662879U CN203662879U CN201320874135.1U CN201320874135U CN203662879U CN 203662879 U CN203662879 U CN 203662879U CN 201320874135 U CN201320874135 U CN 201320874135U CN 203662879 U CN203662879 U CN 203662879U
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- Prior art keywords
- expansion link
- arm
- handle
- cervical vertebra
- door opener
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- Expired - Lifetime
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- 238000000034 method Methods 0.000 description 8
- 238000003756 stirring Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 210000000080 chela (arthropods) Anatomy 0.000 description 4
- 210000003813 thumb Anatomy 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 206010008313 Cervical spinal stenosis Diseases 0.000 description 1
- 206010028570 Myelopathy Diseases 0.000 description 1
- 241000283984 Rodentia Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000002308 calcification Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002684 laminectomy Methods 0.000 description 1
- 210000004446 longitudinal ligament Anatomy 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 208000005198 spinal stenosis Diseases 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
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Abstract
The utility model relates to a gun-type cervical vertebra lamina door opener. The gun-type cervical vertebra lamina door opener comprises a pliers-type handle, a telescopic rod, a rack and a lamina door opening head, wherein the rear end of the rack is connected with the top of a front handle of the pliers-type handle through a pin shaft; the end face of a rear handle of the pliers-type handle is provided with a row of sawteeth meshed with the rack; the telescopic rod penetrates through the top of the rear handle; the rear end of the telescopic rod is connected with the front handle through a pin shaft; the front end of the telescopic rod is connected with the lamina door opening head. The lamina door opening head comprises a movable arm and a fixed arm. The rear end of the fixed arm is connected with the rear handle. The fixed arm is provided with a fixed block. The movable arm is shaped like a downward L. The corner of the movable arm is connected to the fixed block through a pin shaft. The rear end of the movable arm is connected with the front end of the telescopic rod through a pin shaft. The front end of the movable arm and the front end of the fixed arm are respectively provided with a shifting block. The force and width achieved when the shifting blocks shift a lamina can be effectively controlled by controlling the telescopic condition of the telescopic rod, fracture of the lamina caused when the lamina is overstressed is avoided, and successful door opening of the lamina is guaranteed.
Description
Technical field
This utility model relates to a kind of hospital orthopedics medical apparatus and instruments, relates in particular to a kind of rifle formula cervical vertebra plate door opener.
Background technology
In bone surgery, have the operation of opening the door of a kind of cervical vertebra plate, i.e. laminoplasty, cuts cervical vertebra plate one side or bilateral by surgical operation, make vertebral plate backward lateral displacement to expand canalis spinalis, remove narrow canalis spinalis to spinoneural compressing.Cervical vertebra plate forming art is applicable to: the diseases such as serious cervical spinal stenosis, cervical ossified posterior longitudinal ligament, Multilevel cervical spondylotic myelopathy and ligamenta flava calcification.In cervical vertebra plate forming art, conventionally taking a side vertebral plate as door-hinge side, opposite side vertebral plate is the side of opening the door, opening in the process of the side vertebral plate that opens the door, use at present conventionally and comprise periosteal elevator, laminectomy rongeur and can not accurately control door opening width or the instrument such as the Laminoplasty spreader of the strength of opening the door, Chang Yin overexerts and causes door-hinge side vertebral plate complete fracture, fracture, causes laminoplasty failure.
Summary of the invention
This utility model mainly solves original laminoplasty used tool does not have the controlled structure of dynamics, is easy to overexert cause door-hinge side vertebral plate complete fracture, fracture, causes the technical problem of laminoplasty failure; A kind of rifle formula cervical vertebra plate door opener is provided, and it,, by dynamics controlled architecture, can effectively be controlled vertebral plate and open the door
widedegree, makes vertebral plate realize appropriateness and opens the door, and effectively avoids overexertion and vertebral plate phenomenon of rupture occurs, and guarantees that vertebral plate successfully opens the door.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: this utility model comprises jaw type handle, expansion link, tooth bar and the vertebral plate head that opens the door, the follower head of tooth bar is connected to the top of the pull end of jaw type handle by bearing pin, the end face of the rear handle of jaw type handle is provided with the gang saw tooth with the engagement of described tooth bar, described expansion link is through the top of described rear handle, the follower head of expansion link is connected with pull end by bearing pin, and the front end of expansion link and the described vertebral plate head that opens the door is connected.By the engaging structure of tooth bar and sawtooth, can control the process of expansion link, and the forward travel distance control vertebral plate of expansion link open the door head open angle, therefore can effectively control the dynamics of opening of vertebral plate, making vertebral plate realize appropriateness opens the door, can avoid the original vertebral plate overexertion and vertebral plate phenomenon of rupture occurs in operation that opens the door, guarantee that vertebral plate successfully opens the door.
As preferably, the described vertebral plate head that opens the door comprises outer loop bar, two active supporting arms and two connecting rods, the follower head of described outer loop bar is connected with described rear handle, outer loop bar is enclosed within outside described expansion link, the front end of outer loop bar is provided with two fixed support arms that extend out, the front end of fixed support arm connects the rear end of described active supporting arm by bearing pin, the front end of each active supporting arm is provided with a shifting block, the front end of expansion link links together by one end of bearing pin and two connecting rods, the other end of two connecting rods is connected on two active supporting arms by bearing pin respectively.Open the door in operation at vertebral plate, first two shifting blocks are close together back-to-back, then shifting block are injected in the patient's who offers in advance vertebral plate gap, hold the hand grip portion of jaw type handle, make pincers slowly closed, tooth bar and engagement, can control a tooth of a tooth of expansion link and advance, and the angle of two connecting rod formation under expansion link promotes becomes large, strut two active supporting arms, thereby make two shifting blocks separately, one of them shifting block is stirred the vertebral plate of a side and is opened, and completes vertebral plate and opens the door.When reset, open jaw type handle, expansion link retreats, and two connecting rod angles diminish, and active supporting arm draws in, and two shifting blocks are close.
As preferably, the junction point of described connecting rod and described active supporting arm is between the mid point of active supporting arm or mid point and front end at active supporting arm.The power of stirring that can more effectively the thrust of expansion link be converted to shifting block, opens the door vertebral plate more laborsaving, also more reliable.
As preferably, the described vertebral plate head that opens the door comprises a lever arm and a fixed arm, the rear end of fixed arm is connected with described rear handle, fixed arm is provided with a fixed block, lever arm is the L-type of button down, the corner of lever arm is connected on described fixed block by bearing pin, and the rear end of lever arm is connected by the front end of bearing pin and described expansion link, and the front end of described lever arm and the front end of fixed arm are respectively provided with a shifting block.Open the door in operation at vertebral plate, first two shifting blocks are close together back-to-back, then shifting block are injected in the patient's who offers in advance vertebral plate gap, hold the hand grip portion of jaw type handle, make pincers slowly closed, tooth bar and engagement, can control a tooth of a tooth of expansion link and advance, and expansion link promotes forward the rear end of lever arm, lever arm turns clockwise around bearing pin, shifting block on lever arm is slowly away from the shifting block on fixed arm, and the shifting block on lever arm is stirred the vertebral plate of a side and opened, and completes vertebral plate and opens the door.When reset, jaw type handle is opened, and expansion link retreats, and lever arm is rotated counterclockwise, and two shifting blocks are close.
As preferably, described fixed arm is provided with chute towards a side of expansion link, and described expansion link is provided with the slide block towards fixed arm, and slide block is embedded in described chute.When expansion link advances, slide block moves forward in chute, guarantees that the direction that expansion link moves forward can not be offset, and guarantees that shifting block is firmly accurate on vertebral plate, can stir more reliably vertebral plate, completes vertebral plate and opens the door.
As preferably, the cross section of described shifting block is L-type, and two shifting blocks are symmetrical arranged back-to-back.As long as open a very little gap on vertebral plate, just shifting block can be inserted in advance, stir convenient.
As preferably, described is provided with depth stop snap ring on the expansion link between described pull end and rear handle.Depth stop snap ring plays position-limiting action, places restrictions on the forward travel distance of expansion link maximum, places restrictions on the maximum angle that shifting block is opened, the phenomenon generation excessive and that vertebral plate is ruptured of further avoiding exerting oneself.
As preferably, the hand grip portion of described rear handle is provided with a dop protruding backward, between described pull end and the hand grip portion of rear handle, is provided with cross-coupled spring.When operation, thumb can be buckled on dop, firmly convenient, also more laborsaving.Cross-coupled spring plays reset response, guarantees that left handle and right handle flick more laborsaving and smooth.
As preferably, the across back of described shifting block is 3～10MM, and the thickness of shifting block is 0.5～2MM, and described shifting block is 20～30CM to the distance B of rear handle, and the diameter of described expansion link is 4～8MM.
The beneficial effects of the utility model are: by the engaging structure of tooth bar and sawtooth, and the depth stop effect of depth stop snap ring, can control the process of expansion link, therefore can effectively control shifting block and stir dynamics and the width of vertebral plate, making vertebral plate realize appropriateness opens the door, can avoid the original vertebral plate overexertion and vertebral plate phenomenon of rupture occurs in operation that opens the door, guarantee that vertebral plate opens the door smoothly, subsequent procedures is successfully normally carried out.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is another kind of structural representation of the present utility model.
1. expansion links in figure, 2. tooth bar, 3. pull end, 4. rear handle, 5. sawtooth, 6. shifting block, 7. outer loop bar, 8. active supporting arm, 9. connecting rod, 10. fixed support arm, 11. lever arms, 12. fixed arms, 13. fixed blocks, 15. chutes, 16. slide blocks, 17. depth stop snap rings, 18. dops, 19. springs.
Detailed description of the invention
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1: the rifle formula cervical vertebra plate door opener of the present embodiment, as shown in Figure 1, comprise jaw type handle, expansion link 1, tooth bar 2 and the vertebral plate head that opens the door, the follower head of tooth bar 2 is connected to the top of the pull end 3 of jaw type handle by bearing pin, the sawtooth 5 that the end face of the rear handle 4 of jaw type handle has a row and tooth bar 2 to engage, expansion link 1 is through the top of rear handle 4, the follower head of expansion link 1 is connected with pull end 3 by bearing pin, on the expansion link 1 between pull end 3 and rear handle 4, cover has depth stop snap ring 17, the hand grip portion of rear handle 4 has a dop 18 protruding backward, cross-coupled spring 19 is installed between the hand grip portion of pull end 3 and rear handle 4.The vertebral plate head that opens the door comprises outer loop bar 7, two active supporting arms 8 and two connecting rods 9, the follower head of outer loop bar 7 is connected with rear handle 4, outer loop bar 7 is enclosed within outside expansion link 1, the front end of outer loop bar 7 has two fixed support arms 10 that extend out, the front end of fixed support arm 10 is connected with the rear end of active supporting arm 8 by bearing pin, the front end of each active supporting arm 8 has a shifting block 4, the cross section of shifting block 6 is L-type, two shifting blocks 6 are symmetrical arranged back-to-back, the front end of expansion link 1 links together by one end of bearing pin and two connecting rods 9, the other end of two connecting rods 9 is connected to respectively the mid point of two active supporting arms 8 by bearing pin.In the present embodiment, the across back of shifting block 6 is 6MM, and the thickness of shifting block is 1MM, and shifting block is 25CM to the distance B of rear handle 4, and the diameter of expansion link 1 is 6MM.
Open the door in operation at vertebral plate, first two shifting blocks are close together back-to-back, then shifting block is injected in the patient's who offers in advance vertebral plate gap, hold the hand grip portion of jaw type handle, thumb is buckled on dop, makes pincers slowly closed, tooth bar and engagement, can control a tooth of a tooth of expansion link advances, the angle of two connecting rod formation under expansion link promotes becomes large, struts two active supporting arms, thereby makes two shifting blocks separately, one of them shifting block is stirred the vertebral plate of a side and is opened, and completes vertebral plate and opens the door.Depth stop snap ring plays position-limiting action, places restrictions on the forward travel distance of expansion link maximum, places restrictions on the maximum angle that shifting block is opened.When reset, under the resilience force effect of spring, jaw type handle is opened, and expansion link retreats, and two connecting rod angles diminish, and active supporting arm draws in, and two shifting blocks are close.By the engaging structure of tooth bar and sawtooth, and the depth stop effect of depth stop snap ring, can control the process of expansion link, therefore can effectively control shifting block and stir dynamics and the width of vertebral plate, making vertebral plate realize appropriateness opens the door, can avoid the original vertebral plate overexertion and vertebral plate phenomenon of rupture occurs in operation that opens the door, guarantee that vertebral plate opens the door smoothly, subsequent procedures is successfully normally carried out.
Embodiment 2: the rifle formula cervical vertebra plate door opener of the present embodiment, as shown in Figure 2, the vertebral plate head that opens the door comprises a lever arm 11 and a fixed arm 12, the rear end of fixed arm 12 is connected with rear handle 4, a fixed block 13 is installed on fixed arm 12, lever arm 11 is the L-type of button down, the corner of lever arm 11 is connected on fixed block 13 by bearing pin, the rear end of lever arm 11 is connected with the front end of expansion link 1 by bearing pin, the front end of the front end of lever arm 11 and fixed arm 12 respectively has a shifting block 6, the cross section of shifting block 6 is L-type, and two shifting blocks 6 are symmetrical arranged back-to-back.Fixed arm 12 has chute 15 towards a side of expansion link 1, is connected with a slide block 16 towards fixed arm 12 on expansion link 1, and slide block 16 is embedded in chute 15.All the other structures are with embodiment 1.
Open the door in operation at vertebral plate, first two shifting blocks are close together back-to-back, then shifting block is injected in the patient's who offers in advance vertebral plate gap, hold the hand grip portion of jaw type handle, thumb is buckled on dop, make pincers slowly closed, tooth bar and engagement, can control a tooth of a tooth of expansion link advances, expansion link promotes forward the rear end of lever arm, and lever arm turns clockwise around bearing pin, and the shifting block on lever arm is slowly away from the shifting block on fixed arm, shifting block on lever arm is stirred the vertebral plate of a side and is opened, and completes vertebral plate and opens the door.When reset, under the resilience force effect of spring, jaw type handle is opened, and expansion link retreats, and lever arm is rotated counterclockwise, and two shifting blocks are close.By the engaging structure of tooth bar and sawtooth, and the depth stop effect of depth stop snap ring, can control the process of expansion link, therefore the dynamics that can effectively control shifting block and stir vertebral plate, making vertebral plate realize appropriateness opens the door, can avoid the original vertebral plate overexertion and vertebral plate phenomenon of rupture occurs in operation that opens the door, guarantee that vertebral plate opens the door smoothly, subsequent procedures is successfully normally carried out.
Claims (9)
1. a rifle formula cervical vertebra plate door opener, it is characterized in that comprising jaw type handle, expansion link (1), tooth bar (2) and the vertebral plate head that opens the door, the follower head of tooth bar (2) is connected to the top of the pull end (3) of jaw type handle by bearing pin, the end face of the rear handle (4) of jaw type handle is provided with the gang saw tooth (5) with described tooth bar (2) engagement, described expansion link (1) is through the top of described rear handle (4), the follower head of expansion link (1) is connected with pull end (3) by bearing pin, and the front end of expansion link (1) and the described vertebral plate head that opens the door is connected.
2. rifle formula cervical vertebra plate door opener according to claim 1, it is characterized in that the described vertebral plate head that opens the door comprises outer loop bar (7), two active supporting arms (8) and two connecting rods (9), the follower head of described outer loop bar (7) is connected with described rear handle (4), outer loop bar (7) is enclosed within outside described expansion link (1), the front end of outer loop bar (7) is provided with two fixed support arms (10) that extend out, the front end of fixed support arm (10) connects the rear end of described active supporting arm (8) by bearing pin, the front end of each active supporting arm (8) is provided with a shifting block (4), the front end of expansion link (1) links together by one end of bearing pin and two connecting rods (9), the other end of two connecting rods (9) is connected on two active supporting arms (8) by bearing pin respectively.
3. rifle formula cervical vertebra plate door opener according to claim 2, the junction point of the connecting rod (9) described in it is characterized in that and described active supporting arm (8) is positioned at the mid point of active supporting arm (8) or is positioned between the mid point and front end of active supporting arm (8).
4. rifle formula cervical vertebra plate door opener according to claim 1, it is characterized in that the described vertebral plate head that opens the door comprises a lever arm (11) and a fixed arm (12), the rear end of fixed arm (12) is connected with described rear handle (4), fixed arm (12) is provided with a fixed block (13), lever arm (11) is the L-type of button down, the corner of lever arm (11) is connected on described fixed block (13) by bearing pin, the rear end of lever arm (11) is connected by the front end of bearing pin and described expansion link (1), the front end of described lever arm (11) and the front end of fixed arm (12) are respectively provided with a shifting block (6).
5. rifle formula cervical vertebra plate door opener according to claim 4, it is characterized in that described fixed arm (12) is provided with chute (15) towards a side of expansion link (1), described expansion link (1) is provided with the slide block (16) towards fixed arm (12), and slide block (16) is embedded in described chute (15).
6. according to the rifle formula cervical vertebra plate door opener described in claim 2 or 4, it is characterized in that the cross section of described shifting block (6) is L-type, two shifting blocks (6) are symmetrical arranged back-to-back.
7. according to the rifle formula cervical vertebra plate door opener described in claim 1 or 2 or 4, it is characterized in that the expansion link (1) being positioned between described pull end (3) and rear handle (4) is provided with depth stop snap ring (17).
8. according to the rifle formula cervical vertebra plate door opener described in claim 1 or 2 or 4, the hand grip portion that it is characterized in that described rear handle (4) is provided with a dop (18) protruding backward, between described pull end (3) and the hand grip portion of rear handle (4), is provided with cross-coupled spring (19).
9. according to the rifle formula cervical vertebra plate door opener described in claim 2 or 4, the across back that it is characterized in that described shifting block (6) is 3～10MM, the thickness of shifting block is 0.5～2MM, described shifting block (6) is 20～30CM to the distance B of rear handle (4), and the diameter of described expansion link (1) is 4～8MM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320874135.1U CN203662879U (en) | 2013-12-27 | 2013-12-27 | Gun-type cervical vertebra lamina door opener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320874135.1U CN203662879U (en) | 2013-12-27 | 2013-12-27 | Gun-type cervical vertebra lamina door opener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203662879U true CN203662879U (en) | 2014-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320874135.1U Expired - Lifetime CN203662879U (en) | 2013-12-27 | 2013-12-27 | Gun-type cervical vertebra lamina door opener |
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| Country | Link |
|---|---|
| CN (1) | CN203662879U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105748138A (en) * | 2014-12-26 | 2016-07-13 | 林仲可 | Anterior dislocation reduction fixator for atlantoaxial joint |
| CN108042219A (en) * | 2017-12-21 | 2018-05-18 | 四川大学华西医院 | The vertebral plate measuring instrument of slotting position is determined in performing the operation for single open-door |
| CN109793564B (en) * | 2019-04-04 | 2021-03-16 | 南通市第一人民医院 | Restorer capable of supporting collapsed vertebral end plate |
| WO2023173696A1 (en) * | 2022-08-31 | 2023-09-21 | 宁波新跃医疗科技股份有限公司 | Insertion-type tissue clipping device and motion control assembly thereof |
-
2013
- 2013-12-27 CN CN201320874135.1U patent/CN203662879U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105748138A (en) * | 2014-12-26 | 2016-07-13 | 林仲可 | Anterior dislocation reduction fixator for atlantoaxial joint |
| CN105748138B (en) * | 2014-12-26 | 2019-09-27 | 林仲可 | Articulatio atlantoepistrophica anterior dislocation reduction fixture device |
| CN108042219A (en) * | 2017-12-21 | 2018-05-18 | 四川大学华西医院 | The vertebral plate measuring instrument of slotting position is determined in performing the operation for single open-door |
| CN108042219B (en) * | 2017-12-21 | 2020-03-10 | 四川大学华西医院 | Vertebral plate measuring instrument for determining slotting position in single-door operation |
| CN109793564B (en) * | 2019-04-04 | 2021-03-16 | 南通市第一人民医院 | Restorer capable of supporting collapsed vertebral end plate |
| WO2023173696A1 (en) * | 2022-08-31 | 2023-09-21 | 宁波新跃医疗科技股份有限公司 | Insertion-type tissue clipping device and motion control assembly thereof |
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