CN204233201U - Total spondylectomy intercalated disc sickle - Google Patents
Total spondylectomy intercalated disc sickle Download PDFInfo
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- CN204233201U CN204233201U CN201420531734.8U CN201420531734U CN204233201U CN 204233201 U CN204233201 U CN 204233201U CN 201420531734 U CN201420531734 U CN 201420531734U CN 204233201 U CN204233201 U CN 204233201U
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- knife rest
- support
- cutter head
- cutter
- groove
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Abstract
This utility model Total spondylectomy intercalated disc sickle, relates to a kind of operating theater instruments of Via Posterior Spinal Approach Total spondylectomy.It installs lever at strip support rear lower, and back-end support extends upward a nut, and the stop hook be bent upwards is established in support front end; On support, installation kit is containing the cutter of cutter head, knife rest, knife bar and knob; The cutter head of cutter front end is fixed on knife rest front portion, and cutter head can be arranged on support movably forward and backward, and cutter edge is corresponding with stop hook; Knife rest rear portion can rotate relatively but to connect knife bar inseparably anterior, and knife rest bottom can slide anteroposterior but connection bracket inseparably; Knife bar rear portion establishes screw thread and nut to screw togather; Knife bar rearward end is fixedly connected with knob.When stop hook to prop up the side of intervertebral disc from front side, cutter head can complete forward the cutting of this side of intervertebral disc, in like manner can complete the cutting of same another opposite side of cutting planes of intervertebral disc, to complete whole lumbar diskectomy.The operation risk that it can avoid traditional instruments to bring, and shorten operating time.
Description
Technical field
This utility model relates to a kind of bone surgery set, particularly relates to a kind of operating theater instruments for Via Posterior Spinal Approach Total spondylectomy.
Background technology
Primary spinal tumors, can be single-shot or continuous, focus involves vertebral body, adnexa, even surrounding soft tissue, companion or without at a distance and elsewhere organ metastasis.For improving life cycle and improving symptom, one of optimum selection often of performing the operation.But because there is trunk in spinal column front, there is spinal cord at vertebral body rear, the damage at any position, all may occur serious consequence.Vertebra lesion resection, needs complete tumor capsule to excise outward, entirely excises under reaching naked eyes.Bring huge challenge to spinal surgeons like this, one of Operative Puzzle is that row Total spondylectomy intercalated disc cuts, and needs multiple apparatus to assist during operation, and action needs soft, accurate, to blood vessel or spinal cord injury when just can prevent from performing the operation.
Tradition is through the operation of way of escape Total spondylectomy, and when cutting intervertebral disc, vertebral body front, after soft tissue release, with long abdominal spatula through connecting, isolates front tissue.Need vertebral body organization in the rear of reducing pressure, with cord dorsal potentials device protection spinal cord, final utilization scroll saw slowly cuts intervertebral disc simultaneously.More than operating existence can cause operating time to extend, and amount of bleeding increases the shortcoming of equivalent risk.
First, when the forward and backward side's decompression of row vertebral body is loosened, increase hemorrhage to damaging surrounding tissue, therefore in art, operation slowly, extends operating time, also increases infection risk simultaneously;
Secondly, use traditional instruments still to exist blood vessel injury and spinal cord injury risk, may be not in place because protecting in art, during operation, strength is uneven etc., accidentally injures blood vessel and spinal cord, causes serious consequence.
Utility model content
This utility model aims to provide a kind of operation risk avoiding traditional instruments to bring, and shortens the Total spondylectomy intercalated disc sickle of operating time.
The technical solution of the utility model is: Total spondylectomy intercalated disc sickle, and the support rear lower of strip installs lever, and the rear end of this support extends upward a nut, and the stop hook be bent upwards is established in the front end of this support; On this support, installation kit is containing the cutter of cutter head, knife rest, knife bar and knob; The cutter head of this cutter front end is fixed on the front portion of this knife rest, and this cutter head can be arranged on this support movably forward and backward, and the cutting edge of this cutter head is corresponding with this stop hook; The rear portion of this knife rest relatively can rotate but connect the front portion of this knife bar inseparably, and the bottom of this knife rest can slide anteroposterior but connect this support inseparably; The rear portion of this knife bar establishes screw thread and this nut to screw togather; The rearward end of this knife bar is fixedly connected with this knob
This utility model arranges the stop hook of arc in the front end of support, and this stop hook can comply with vertebral body Front Frame, and is docilely fixed on vertebral body front.The cutter head that can move forward and backward is set at the intervertebral disc rear of vertebral body by support, when the stop hook of this support to prop up the side of intervertebral disc from front side, the cutter head of this cutter can complete forward the cutting of this this side of intervertebral disc, and when this stop hook to prop up another opposite side of this intervertebral disc from front side, the cutter head of this cutter can complete forward the cutting of same another opposite side of cutting planes of this intervertebral disc, thus completes the cutting of whole intervertebral disc.It has started a kind of movement utilizing cutter head at twice on the same cutting planes of same intervertebral disc, the completely newly simple lumbar diskectomy modus operandi that this intervertebral disc is intactly cut open, so the operation risk that traditional instruments may be brought can be avoided, and shorten operating time.
Because cutter adopts above-mentioned version, only need slow turning knob, knife bar promotion knife rest and cutter head just can be made movable on support, and easy to operate and cutter head moves steadily.The version of this cutter is easy to realize, and is convenient to sterilize, repeatedly use.
In the enforcement structure of recommending: the first half of described knife rest is the principal part of tabular, this principal part has the grooving running through its upper surface, front end face and lower surface; Described cutter head is inserted and secured in the grooving of knife rest principal part.
The structure of this knife rest utilizes the grafting relation of grooving and cutter head, and the known various technological means such as screw connection, pin connection can be adopted to firmly fix cutter head, is also convenient to change cutter head.
In the enforcement structure of recommending: the lower end of left and right two sides of described knife rest principal part is respectively equipped with sliver under the longitudinal direction of outwardly convex, and compartment of terrain, the top correspondence of sliver arranges upper sliver parallel with it in each of the lower; Guide groove is formed between the lower sliver of this principal part arranged on left and right sides and the upper sliver of homonymy; The middle part of described support is provided with the slotted hole that runs through its upper and lower surface, and the size of this slotted hole is enough to stretch into wherein with allowing the principal part horizontal of described knife rest; At the lower surface of described support, axis has forward together wide with this slotted hole and to the elongated slot of fovea superior from the front end of this slotted hole along the longitudinal, described support upper surface along the longitudinal axis have forward narrower than this slotted hole one from the front end of this slotted hole and extend through the groove of this elongated slot downwards, the arranged on left and right sides of this groove forms inwardly protruded strip gib block respectively, and these two gib blocks are clipped in the guide groove of described knife rest principal part bottom arranged on left and right sides respectively.
The gliding movement targeting structure of this knife rest and support assorted, while meeting the functional requirement that knife rest can move forward and backward on support, also effectively limit knife rest not Eng depart from support up or down.Gap between the lower sliver of two gib blocks and knife rest principal part bottom arranged on left and right sides and the upper sliver of homonymy on selecting properly support, the stationarity that cutter head is movable can also be ensured, the stationarity of namely cutter head cutting intervertebral disc, makes to cut Zuo Ye Alto gently and controls to accurate.
In the enforcement structure of recommending: the groove on the stop hook of described support described in correspondence has one through cutter relieving groove, the maximum height of this cutter relieving groove is lower than the top of described stop hook; Described cutter edge be inserted in the groove of described support or described stop hook cutter relieving groove in.
Stop hook arranges cutter relieving groove, can the bottom of cutter edge be made in the stage starting to cut intervertebral disc to be inserted in the groove of support, form the dissection of " back chipping " outside intervertebral disc; Make the cutting edge of cutter head front portion be inserted in the cutter relieving groove of stop hook in the end of a period stage of cutting intervertebral disc, form the dissection of " back chipping " on front side of intervertebral disc, can ensure not stay dead angle, thoroughly cut.In addition, because the nut of knob on support is combined, can the effective length at the rear of cutter to cutter restrict, prevention cutter head easily slippage exceedes the cutter relieving groove of the stop hook in front, causes other tissue of injured patient.
Implement in structure preferred: the latter half of of described knife rest is columniform connecting portion; The top of this connecting portion leading portion is provided with the pin-and-hole of a transverse direction, the jack that the inner longitudinally axis of this connecting portion has, and this jack extends to its leading section from the rear end of this connecting portion, surmounts this pin-and-hole and passes through mutually with this pin-and-hole; The Plug Division that described knife bar leading section establishes diameter less, the pin-and-hole of the corresponding described knife rest connecting portion in front portion of this Plug Division has one annular groove; The Plug Division of described knife bar front end is inserted in the jack of described knife rest connecting portion; A son of having strong market potential, through the pin-and-hole of described knife rest connecting portion and the annular groove of described knife bar Plug Division, makes the rear portion of described knife rest relatively rotate but connects the front portion of described knife bar inseparably.
The syndeton of this knife rest and knife bar, the resistance that knife bar rotates is little, and the bonding strength of knife bar and knife rest is high, is also easy to processing and fabricating and assembling.
Implement in structure preferred: the main body described cutter head being provided with rectangular sheet, this body front part establishes cutting part, and the top of this cutting part surmounts the upper surface of this main body and upwards swells, and forms the knife back of arcs of recesses.
The knife back is arcs of recesses, can dodge spinal cord during cutting, is unlikely to cause spinal cord injury.
Particularly: the front side of described cutter head cutting part offers numerous oblique groove all radially to left and right two opposed facets of first half of the curved edge of lower end, and these oblique grooves make the knife edge indentation of this cutting edge; The wedgelike that the latter half of one-tenth of this cutting edge is straight continues up to the bottom in described main body stage casing.
The zigzag knife edge of this cutter head curved edge is sharp especially, and cutting power when translation is advanced is strong, good cutting effect.
The beneficial effect of this utility model Total spondylectomy intercalated disc sickle in operation is as follows:
1, without the need to the undue stripping of spinal column surrounding soft tissue, obviously reduce the operations such as many spinal concussion; Too need not loosen to spinal column front soft tissue, slowly support front curved metal stop hook is positioned over spinal column front, can play the tissue in intervertebral disc front and protect and limit the headlong over range displacement of cutter when it cuts;
2, need not do extra adequately protecting to vertebral body rear spinal cord, the knife back concavely arc of cutting intervertebral disc, can not cause extruding equivalent damage to spinal cord;
3, power during cutting relies on rotary knob slowly, make cutter head extrude disc tissue, and the cutting edge of its cutter head is sharp, can complete intervertebral disc and surrounding ligaments fracture smoothly.。
This utility model Total spondylectomy intercalated disc sickle, cuts intervertebral disc and divides left and right two steps operation in art, can promptly complete resection vertebral body front ligament and disc tissue, and can excise the ligament tissue at vertebral body rear.Effectively can shorten operating time and reduce and infect, reduce clinical complication.We are by testing a large amount of animals and human cadaver's spinal column specimen, and this utility model Total spondylectomy intercalated disc sickle can excise intervertebral disc smoothly, and not damaged front blood vessel and rear spinal cord, the operating time is short, safe, reliable.
Accompanying drawing explanation
Fig. 1 is the deployed configuration schematic diagram of this utility model Total spondylectomy intercalated disc sickle embodiment.
Fig. 2 is the perspective view of cutter head in Fig. 1 embodiment.
Fig. 3 is the perspective view of Fig. 1 embodiment intermediate slide.
Fig. 4 is the longitudinal profile structural representation of Fig. 1 embodiment medium-height trestle.
Fig. 5 is the perspective view of Fig. 1 embodiment.
Fig. 6 is the longitudinal profile structural representation of the cutter of cutter head, knife rest, knife bar and knob composition in Fig. 1 embodiment.
Fig. 7 is the perspective cut-away structural representation of cutter head in Fig. 1 embodiment, knife rest, support mutual relation.
Detailed description of the invention
The deployed configuration of this utility model Total spondylectomy intercalated disc sickle embodiment, as shown in Figure 1, it has the parts such as cutter head 1, knife rest 2, knife bar 3, support 4, lever 5 and knob 6.
The structure of cutter head 1, please refer to Fig. 2: cutting part 12 is established in main body 11 front portion of its rectangular sheet.The top of cutting part 12 surmounts the upper surface of main body 11 and upwards swells, and forms the knife back of arcs of recesses.The front side of cutting part 12 is the curved edge 13 inwardly shunk to lower end, and left and right two opposed facets of first half of cutting part 12 cutting edge 13 offer numerous oblique groove 131 all radially, and these oblique grooves 131 make the knife edge 132 indentation of cutting edge 13.The wedgelike that the latter half of one-tenth of this cutting edge 13 is straight continues up to the bottom in main body 11 stage casing.The back segment of main body 11 is provided with upper and lower two via holes 14.
The structure of knife rest 2, please refer to Fig. 3: the first half of knife rest 2 is the principal part 21 of tabular, and latter half of is columniform connecting portion 27.Principal part 21 has the grooving 22 running through its upper surface, front end face and lower surface; The front portion of principal part 21 is provided with upper and lower two installing holes 23 running through grooving 22; And be configured with a short pin 231 for each installing hole 23.The size of these two installing holes 23 and spacing consistent with two via holes 14 in cutter head 1 main body 11.The lower end of left and right two sides of principal part 21 is respectively equipped with sliver 24 under the longitudinal direction of outwardly convex, and compartment of terrain, the top correspondence of sliver 24 arranges upper sliver 25 parallel with it in each of the lower.Guide groove 26 is formed between the lower sliver 24 of principal part 21 arranged on left and right sides and the upper sliver 25 of homonymy.The top of connecting portion 27 leading portion is provided with the pin-and-hole 271 of a transverse direction, and has strong market potential sub 272 for it is equipped with one.Connecting portion 27 inside is the jack 273 (please refer to Fig. 6) that has of axis longitudinally, and this jack 273 extends to its leading section from the rear end of connecting portion 27, surmounts pin-and-hole 271 and passes through mutually with pin-and-hole 271.
The structure of knife bar 3, as shown in figures 1 to 6.The knife bar 3 of cylindrical posts shape, leading section is provided with the less Plug Division of diameter 31, and the jack 273 of the diameter of Plug Division 31 and length and knife rest 2 connecting portion 27 is to corresponding; The pin-and-hole 271 of corresponding knife rest 2 connecting portion 27 in front portion of this Plug Division 31 has one annular groove 311.The rear portion of knife bar 3 is provided with one section of trapezoidal thread 32, knife bar 3 is provided with outward flange 33 at the rear of trapezoidal thread 32 and rearward end on rear side of outward flange 33 offers radial via hole 34.
As shown in Figure 1 and Figure 4, its main body 40 is elongated flat steel bars to support 4.The rear end of main body 40 extends upward a nut 41.The axis of this nut 41 is with main body 40 longitudinal axis parallel and its female thread 411 is corresponding with the trapezoidal thread 32 of knife bar 3.The front end of main body 40 is provided with the stop hook 42 be bent upwards.The middle part of main body 40 is provided with the slotted hole 401 that runs through its upper and lower surface.The size of this slotted hole 401 is enough to stretch into wherein with allowing principal part 21 horizontal of knife rest 2.At the lower surface of main body 40, along the longitudinal axis of main body 40 from the front end of slotted hole 401 forward until the front end of main body 40 has wide with slotted hole 401 together and to the elongated slot 402 of fovea superior.At the upper surface of main body 40 along the longitudinal axis of main body 40 from the front end of slotted hole 401 forward until the front end of main body 40 has narrower than slotted hole 401 many and extend through the groove 404 of elongated slot 402 together downwards, the arranged on left and right sides of groove 404 is formed from the inwardly protruded strip gib block of the left and right sidewall of elongated slot 402 403, two gib blocks 403 corresponding with the guide groove 26 of knife rest 2 principal part 21 bottom arranged on left and right sides respectively.On stop hook 42, the groove 404 of corresponding main body 40 has the cutter relieving groove 421 of together through stop hook 42, and the maximum height of cutter relieving groove 421 is a little less than the top of stop hook 42.The lower surface of main body 40 rearward end is provided with a blind hole 408 to install lever 5.
After the present embodiment assembling, as shown in Fig. 5, Fig. 6 and Fig. 7: the main body 11 of cutter head 1 is inserted in the grooving 22 of knife rest 2 principal part 21, upper and lower two installing holes 23 in front portion that two short pins 231 are each passed through knife rest 2 principal part 21 and upper and lower two via holes 14 of cutter head 1 main body 11 back segment, be fixed on cutter head 1 on the principal part 21 of knife rest 2.After stretching into principal part 21 horizontal of knife rest 2 slotted hole 401 in the middle part of support 4 main body 40, push away forward again, two gib blocks 403 in support 4 main body 40 are inserted in the guide groove 26 of knife rest 2 principal part 21 bottom arranged on left and right sides respectively, and knife rest 2 and cutter head 1 can be moved forward and backward reposefully in the main body 40 of support 4.The nut 41 of support 4 rear end is passed at knife bar 3 front portion and middle part, and the trapezoidal thread 32 at knife bar 3 rear portion is screwed in nut 41.The rearward end of knife bar 3 is inserted in the jack 61 on front side of knob 6.Knob 6, through the radial via hole 34 of the pin-and-hole 62 on knob 6 left and right side and knife bar 3 rearward end, is fixed on the rearward end of knife bar 3 by steady pin 63.
The Plug Division 31 of knife bar 3 front end is inserted in the jack 273 of knife rest 2 connecting portion 27; Have strong market potential son 272 through the pin-and-hole 271 of knife rest 2 connecting portion 27 and the annular groove 311 of knife bar 3 Plug Division 31, can not be able to be separated with movable knife rack 2 moves forward and backward along the groove 404 in support 4 main body 40 in the process that knife bar 3 is rotated at phase cutter setting frame 2.The bottom of the knife edge 131 of the cutting edge 13 of cutter head 1 is hidden in the bottom of the groove 404 of support 4 main body 40 or the cutter relieving groove 421 of stop hook 42.The axle of lever 5 upper end is inserted and secured in the blind hole 408 of support 4 main body 40 rearward end, makes lever 5 and support 4 connect into the entirety of a gun-type.
Turning knob 6, knife bar 3 is made to push knife rest 2 and cutter head 1 moves forward, until when the outward flange 33 at knife bar 3 rear portion props up the rear end face of support 4 rear end nut 41, knob 6 no longer can continue to make knife bar 3 to promote knife rest 2 and cutter head 1 when moving forward, and the knife edge 131 of cutter head 1 cutting edge 13 inserts in the cutter relieving groove 421 of support 4 stop hook 42 already.
During use, first turning knob 6, makes knife bar 3 push knife rest 2 and cutter head 1 moves backward, until cutter head 1 is away from the stop hook 42 of support 4.Then to patient's spinal column anterior-lateral decompression, softly the stop hook 42 of cutter holder 4 is positioned over front, vertebral body side, on front side of the intervertebral disc that stop hook 42 is propped up for cutting, and cutter head 1 is just to the rear side of this intervertebral disc.Afterwards, slow circumvolve knob 6, knife bar 3 is made to push knife rest 2 and cutter head 1 moves forward, the now knife edge 131 of cutter head 1 cutting edge 13 slowly incision disc tissue cutting intervertebral disc, observe vertebral body rear spinal cord, make it not suffer oppression, after the knife edge 131 of cutter head 1 cutting edge 13 inserts in the cutter relieving groove 421 of support 4 stop hook 42, knob 6 just can not be rotated further and cutter head 1 does not readvance, and now points out this side intervertebral disc to cut complete.In the same way lumbar diskectomy is implemented to the same cutting planes of the opposite side of this intervertebral disc again, can the whole intervertebral disc of complete resection and surrounding ligaments tissue.
For occupation mode and the effect of the present embodiment are described, we do the demonstration of cutting operation with the vertebrae of one section of pig.Sickle cutter head 1 is away from the stop hook 42 of support 4; The stop hook 42 of support 4 is positioned over front, pig vertebral body first side, and on front side of the intervertebral disc that stop hook 42 is propped up for cutting, and cutter head 1 is just to the rear side of this intervertebral disc.Slow circumvolve knob 6, makes knife bar 3 push knife rest 2 and cutter head 1 moves forward, and the knife edge 131 slowly incision disc tissue cutting intervertebral disc of cutter head 1 cutting edge 13, finally completes the cutting of pig intervertebral disc first side.Sickle has changed a direction, and cutter head 1 is again away from the stop hook 42 of support 4; The stop hook 42 of support 4 is positioned over pig vertebral body opposite side front, and stop hook 42 props up on front side of the intervertebral disc for cutting and ligament tissue, and cutter head 1 is just to the rear side of the same cutting planes of this intervertebral disc.Afterwards, slow circumvolve knob 6, makes knife bar 3 push knife rest 2 and cutter head 1 moves forward.The knife edge 131 slowly incision disc tissue cutting intervertebral disc of cutter head 1 cutting edge 13, finally completes the cutting of this pig intervertebral disc opposite side and ligament tissue.This pig intervertebral disc is cut completely, and vertebra and the ligament tissue of both sides are separated, and the spinal cord of rear side is retained and is without damage.
In actual use, it can be the stop hook 42 that support 4 designs different model, making it more can be docile with anterior margin of vertebral body, so more can insert anterior margin of vertebral body very well, and protect surrounding soft tissue, its front arc groove mates with the knife edge and limits in conjunction with its rear length, and prevention blade easily slippage exceedes front, causes damaged tissue; Cutter head 1 cutting edge 13 cutting part can regularly grinding, keeps its sharpness.Noting guaranteeing that the radian of cutter head 1 front portion should mate with the arc of support 4 front stop hook 42, making it be unlikely to produce unnecessary damage to surrounding soft tissue when cutting; The knife back arc of cutter head 1 can suitably increase, its object is to cutting time not in move, unnecessary damage is caused to spinal cord.
The above, be only this utility model preferred embodiment, do not limit the scope of this utility model enforcement with this, and the equivalence done according to the technical solution of the utility model and description change and modification, all should belong to the scope that this utility model is contained.
Claims (7)
1. Total spondylectomy intercalated disc sickle, is characterized in that: the support rear lower of strip installs lever, and the rear end of this support extends upward a nut, and the stop hook be bent upwards is established in the front end of this support; On this support, installation kit is containing the cutter of cutter head, knife rest, knife bar and knob; The cutter head of this cutter front end is fixed on the front portion of this knife rest, and this cutter head can be arranged on this support movably forward and backward, and the cutting edge of this cutter head is corresponding with this stop hook; The rear portion of this knife rest relatively can rotate but connect the front portion of this knife bar inseparably, and the bottom of this knife rest can slide anteroposterior but connect this support inseparably; The rear portion of this knife bar establishes screw thread and this nut to screw togather; The rearward end of this knife bar is fixedly connected with this knob.
2. Total spondylectomy intercalated disc sickle according to claim 1, is characterized in that: the first half of described knife rest is the principal part of tabular, this principal part has the grooving running through its upper surface, front end face and lower surface; Described cutter head is inserted and secured in the grooving of knife rest principal part.
3. Total spondylectomy intercalated disc sickle according to claim 2, it is characterized in that: the lower end of left and right two sides of described knife rest principal part is respectively equipped with sliver under the longitudinal direction of outwardly convex, and compartment of terrain, the top correspondence of sliver arranges upper sliver parallel with it in each of the lower; Guide groove is formed between the lower sliver of this principal part arranged on left and right sides and the upper sliver of homonymy; The middle part of described support is provided with the slotted hole that runs through its upper and lower surface, and the size of this slotted hole is enough to stretch into wherein with allowing the principal part horizontal of described knife rest; At the lower surface of described support, axis has forward together wide with this slotted hole and to the elongated slot of fovea superior from the front end of this slotted hole along the longitudinal, described support upper surface along the longitudinal axis have forward narrower than this slotted hole one from the front end of this slotted hole and extend through the groove of this elongated slot downwards, the arranged on left and right sides of this groove forms inwardly protruded strip gib block respectively, and these two gib blocks are clipped in the guide groove of described knife rest principal part bottom arranged on left and right sides respectively.
4. Total spondylectomy intercalated disc sickle according to claim 3, is characterized in that: the groove on the stop hook of described support described in correspondence has one through cutter relieving groove, and the maximum height of this cutter relieving groove is lower than the top of described stop hook; Described cutter edge be inserted in the groove of described support or described stop hook cutter relieving groove in.
5. Total spondylectomy intercalated disc sickle according to claim 2, is characterized in that: the latter half of of described knife rest is columniform connecting portion; The top of this connecting portion leading portion is provided with the pin-and-hole of a transverse direction, the jack that the inner longitudinally axis of this connecting portion has, and this jack extends to its leading section from the rear end of this connecting portion, surmounts this pin-and-hole and passes through mutually with this pin-and-hole; The Plug Division that described knife bar leading section establishes diameter less, the pin-and-hole of the corresponding described knife rest connecting portion in front portion of this Plug Division has one annular groove; The Plug Division of described knife bar front end is inserted in the jack of described knife rest connecting portion; A son of having strong market potential, through the pin-and-hole of described knife rest connecting portion and the annular groove of described knife bar Plug Division, makes the rear portion of described knife rest relatively rotate but connects the front portion of described knife bar inseparably.
6. the Total spondylectomy intercalated disc sickle according to claim 1 or 2 or 3 or 4 or 5, it is characterized in that: described cutter head is provided with the main body of rectangular sheet, this body front part establishes cutting part, and the top of this cutting part surmounts the upper surface of this main body and upwards swells, and forms the knife back of arcs of recesses.
7. Total spondylectomy intercalated disc sickle according to claim 6, it is characterized in that: the front side of described cutter head cutting part offers numerous oblique groove all radially to left and right two opposed facets of first half of the curved edge of lower end, and these oblique grooves make the knife edge indentation of this cutting edge; The wedgelike that the latter half of one-tenth of this cutting edge is straight continues up to the bottom in described main body stage casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420531734.8U CN204233201U (en) | 2014-09-16 | 2014-09-16 | Total spondylectomy intercalated disc sickle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420531734.8U CN204233201U (en) | 2014-09-16 | 2014-09-16 | Total spondylectomy intercalated disc sickle |
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| Publication Number | Publication Date |
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| CN204233201U true CN204233201U (en) | 2015-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420531734.8U Expired - Fee Related CN204233201U (en) | 2014-09-16 | 2014-09-16 | Total spondylectomy intercalated disc sickle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110393574A (en) * | 2019-09-08 | 2019-11-01 | 成都市第二人民医院 | Hook-shaped nerve dissector with Timely Aid cutting function |
| CN113288349A (en) * | 2021-06-25 | 2021-08-24 | 宁波市第六医院 | Cutter for posterior longitudinal ligament |
-
2014
- 2014-09-16 CN CN201420531734.8U patent/CN204233201U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110393574A (en) * | 2019-09-08 | 2019-11-01 | 成都市第二人民医院 | Hook-shaped nerve dissector with Timely Aid cutting function |
| CN110393574B (en) * | 2019-09-08 | 2024-05-03 | 成都市第二人民医院 | Hooked nerve stripper with timely auxiliary cutting function |
| CN113288349A (en) * | 2021-06-25 | 2021-08-24 | 宁波市第六医院 | Cutter for posterior longitudinal ligament |
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