CN209203416U - It is anchored screw-in intervertebral foramen former - Google Patents
It is anchored screw-in intervertebral foramen former Download PDFInfo
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- CN209203416U CN209203416U CN201821464776.9U CN201821464776U CN209203416U CN 209203416 U CN209203416 U CN 209203416U CN 201821464776 U CN201821464776 U CN 201821464776U CN 209203416 U CN209203416 U CN 209203416U
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Abstract
The utility model discloses a kind of anchoring screw-in intervertebral foramen formers, including trepan, trepan barrel forward end has sawtooth, it is characterized in that the former further includes lead rod, the lead rod includes hollow guide rod, F.F. threaded rod and slow-motion threaded rod, F.F. threaded rod is arranged in guide rod front, slow-motion threaded rod is arranged at guide rod rear portion, F.F. screw thread shank diameter is greater than slow-motion screw thread shank diameter, and external screw thread screw pitch is greater than external screw thread screw pitch on slow-motion threaded rod on F.F. threaded rod, guide rod front end stretches out F.F. threaded rod and forms probe portion, F.F. threaded rod is fixedly arranged at the front end with anchoring needle；The trepan sleeve includes F.F. screw shell section and slow-motion screw shell section, and the internal screw thread of F.F. screw shell section is matched with the external screw thread of F.F. threaded rod, and the internal screw thread of slow-motion screw shell section is matched with the external screw thread of slow-motion threaded rod.The utility model by threaded segments cooperate in the way of control trepan entrance speed and vigor, improve intervertebral foramen forming operation safety.
Description
Technical field
The utility model relates to medical instruments fields, and in particular to a kind of anchoring screw-in intervertebral foramen former.
Background technique
Current vertebral column minimally invasive foramen intervertebrale lens operation is to treat the standard invasive surgery formula of disc herniation.In the course of surgery
It needs intervertebral foramen is opened greatly to intervertebral hole forming.Articular process abdomen is realized usually using trepan in traditional intervertebral hole forming
The grinding of side is usually used puncture needle, seal wire, guide rod, soft-tissue expansion casing and trepan and is used cooperatively.First pass through puncture needle
Percutaneous puncture, X-ray examination carry out true puncture needle and enter intervertebral foramen backed off after random needle core, be implanted into seal wire, be then log out puncture needle indwelling and lead
Silk is implanted into guide rod along seal wire, then is placed in soft-tissue expansion casing outside guide rod, and trepan is directly sleeved on outside soft-tissue expansion casing
The removing of processus articular superior part sclerotin is carried out, then the next stage trepan bigger with diameter again, expands intervertebral foramen step by step.It is led
The shortcomings that wanting is: 1 cannot control strength, expand intervertebral foramen using trepan and need biggish strength forward, when trepan breaks through sclerotin
Force is big, because effect of inertia is easy neurotrosis caused by making trepan take off canalis spinalis；2 can not judge the molding degree of intervertebral foramen, at
Type is excessive, impacts to the stability of backbone, and target spot position cannot be placed in safely by forming few then channel.3. needing more step by step
Secondary form, trepan step by step, and expanding channel needs are repeated multiple times to be entered in vivo, has aggravated the damage of local soft tissue,
Run counter to minimally invasive theory.Speed when 4 trepans when being unable to control molding enter.
Utility model content
The purpose of this utility model is to provide a kind of anchoring screw-in intervertebral foramen former, the former intervertebral foramen at
It can control the speed and vigor of trepan entrance during type, improve the safety of intervertebral foramen forming operation.
In order to achieve the above object, the utility model is achieved through the following technical solutions: anchoring screw-in intervertebral foramen
Former, including trepan, trepan barrel forward end have sawtooth, and the former further includes lead rod, and the lead rod includes hollow
Guide rod, F.F. threaded rod and slow-motion threaded rod, the setting of F.F. threaded rod are arranged after guide rod in guide rod front, slow-motion threaded rod
Portion, F.F. screw thread shank diameter are greater than slow-motion screw thread shank diameter, and external screw thread screw pitch is greater than on slow-motion threaded rod on F.F. threaded rod
External screw thread screw pitch, guide rod front end stretch out F.F. threaded rod and form probe portion, and F.F. threaded rod is fixedly arranged at the front end with anchoring needle；It is described
Trepan sleeve includes F.F. screw shell section and slow-motion screw shell section, the internal screw thread and F.F. threaded rod of F.F. screw shell section
External screw thread match, the internal screw thread of slow-motion screw shell section is matched with the external screw thread of slow-motion threaded rod, trepan progradation
In, F.F. screw shell section enters cooperation with slow-motion screw shell section when F.F. threaded rod constraint relief and slow-motion threaded rod.
More preferably, the probe portion and anchoring needle front end are tapered end.
More preferably, F.F. threaded rod front is smooth section, and rear portion is thread segment, and F.F. screw shell section is close to trepan sawtooth
Setting.It is preferred that the screw thread segment length 5-7mm of F.F. threaded rod, F.F. screw shell segment length 10-14mm.
More preferably, guide rod rear end is provided with handle, is equipped with cue mark in anchoring needle long axis extended line and handle intersection.
More preferably, guide rod deviates F.F. threaded rod axle center and is arranged by outer diameter end, and anchoring needle is parallel and separate with guide rod long axis
Guide rod setting.
More preferably, slow-motion threaded rod is located at outside body in use.
More preferably, the trepan sleeve tail end is prismatic.Prismatic structure is convenient to be connect with tool, is applied to trepan sleeve
Power promotes trepan.
The utility model has the beneficial effects that being sent lead rod to preforming place using seal wire, guide rod probe portion can enter vertebra
Between in hole, anchoring needle is anchored on preforming position, and trepan covers outside lead rod and along lead rod progradation, when F.F. screw shell
When section is with F.F. shaft, since thread pitch is big, trepan admission velocity is fast, as trepan gos deep into, slow-motion screw shell
Section and slow-motion shaft, trepan admission velocity is slow, using the form depth and shaping speed for being threadedly engaged control trepan, keeps away
The damage of fall through the suddenly caused nerve root and dural sac of previous trepan is exempted from.Probe portion keeps and needs in forming process
Forming part is close to, and be anchored needle it is parallel with lead rod can least molding part sclerotin, reach the locally-shaped of maximal efficiency
Effect.
Detailed description of the invention
Fig. 1 the utility model structure diagram.
Fig. 2 is guide rod structure schematic diagram.
Fig. 3 is A-A cross-sectional view in Fig. 2.
Fig. 4 is B-B cross-sectional view in Fig. 2.
Fig. 5 is trepan structural schematic diagram.
Fig. 6 is C-C cross-sectional view in Fig. 5.
Fig. 7 is D-D cross-sectional view in Fig. 5.
Fig. 8 is E--E cross-sectional view in Fig. 5.
1 lead rod, 11 guide rods, 11a probe portion, 11b interconnecting piece, the tail portion 11c, 11d guide rod chamber, 12 anchoring needles, 13 F.F. spiral shells
Rasp bar, the big screw pitch external screw thread of 13a, 13b smooth section, 13c thread segment, 14 slow-motion threaded rods, 14a fine pitch external screw thread, 15 handles,
2 trepans, 21 sawtooth, 22 F.F. screw shell sections, the big screw pitch internal screw thread of 22a, 23 frictionless sleeve sections, 24 slow-motion screw shell sections,
24a fine pitch internal screw thread, 25 tail ends, 26 trepan inner cavities.
Specific embodiment
The utility model is anchored screw-in intervertebral foramen former, including trepan 2 and lead rod 1, merging of the lead rod 1 to trepan 2
Play the role of guiding and speed limit, trepan 2 enters articular process veutro under the guidance of lead rod 1 and carries out sclerotin grinding.During lead rod 1 includes
Empty guide rod 11, F.F. threaded rod 13 and slow-motion threaded rod 14, F.F. threaded rod 13 are arranged in 11 front of guide rod, slow-motion threaded rod
At 11 rear portion of guide rod, 13 diameter of F.F. threaded rod is greater than 14 diameter of slow-motion threaded rod, and outer spiral shell on F.F. threaded rod 13 for 14 settings
Line screw pitch is greater than external screw thread screw pitch on slow-motion threaded rod 14, and 11 front end of guide rod stretches out F.F. threaded rod 13 and forms probe portion 11a,
F.F. threaded rod 13 is fixedly arranged at the front end with anchoring needle 12.Guide rod 11 deviates 13 axle center of F.F. threaded rod and is arranged by outer diameter end, is anchored needle
12 parallel with 11 long axis of guide rod and separate guide rods 11 are arranged.Probe portion 11a can enter in intervertebral foramen, and in intervertebral hole forming mistake
It is close to always with forming part is needed in journey, and is anchored needle 12 and is anchored on preforming position, fixed function is played to lead rod 1.It leads
11 rear end of bar is provided with handle, cue mark is equipped in anchoring 12 long axis extended line of needle and 15 intersection of handle, by indicateing arm
Note can determine whether anchoring 12 position of needle, especially anchoring needle 12 and the relative position probe portion 11a, is conducive to anchoring needle 12 and accurately reaches
Preforming position.Probe portion 11a and anchoring 12 front end of needle are tapered end, and taper pointed structures have the function of expanding soft tissue,
It is assisted in use without other soft tissue dilators, soft-tissue expansion can be carried out and reach predetermined position.
2 barrel forward end of trepan has sawtooth 21, and tail end 25 is prismatic, and prismatic structure is convenient to be connect with tool, to ring
2 sleeves force is sawed, trepan 2 is promoted.2 sleeve of trepan includes F.F. screw shell section 22 and slow-motion screw shell section 24, F.F. spiral shell
The internal screw thread of line sleeve sections 22 is matched with the external screw thread of F.F. threaded rod 13, the internal screw thread of slow-motion screw shell section 24 and slow-motion
The external screw thread of threaded rod 14 matches.In 2 progradation of trepan, F.F. screw shell section 22 and 13 constraint relief of F.F. threaded rod
When slow-motion screw shell section 24 enter with slow-motion threaded rod 14 and cooperate.
Trepan 2 and lead rod 1 can have different size, and more general can be 10- by 11 front probe portion 11a length of guide rod
15mm, guide rod chamber 11d aperture 1mm are anchored 12 length 3-5mm of needle to accommodate seal wire, after anchoring needle 12 is fixed on preforming position,
Probe portion 11a, which protrudes into intervertebral foramen, will not contact the nerve etc. in intervertebral foramen.F.F. threaded rod 13 is 14mm long, screw thread segment length
7mm, smooth segment length 7mm, diameter 7mm, the screw pitch of big screw pitch external screw thread 13a is 1mm thereon, and slow-motion threaded rod 14 is 10- long
20mm, diameter 6mm, the screw pitch of fine pitch external screw thread 14a is 0.5mm, correspondingly, its F.F. thread bush of matched trepan 2 thereon
Cylinder 22 length 14mm of section, big screw pitch external screw thread 13a big screw pitch internal screw thread 22a thereon long with F.F. threaded rod 13 match,
24 length 20-40mm of slow-motion screw shell section, the outer spiral shell of fine pitch internal screw thread 24a and slow-motion threaded rod 14 thereon long fine pitch
Line 14a matches.The length of 11 interconnecting piece 11b of guide rod is set between F.F. threaded rod 13 and slow-motion threaded rod 14, is made slow
It is located at outside body into threaded rod 14, facilitates operation, and between F.F. screw shell section 22 and slow-motion screw shell section 24
23 length of frictionless sleeve section matches with interconnecting piece 11b, meets F.F. screw shell section 22 and 13 constraint relief of F.F. threaded rod
When slow-motion screw shell section 24 enter with slow-motion threaded rod 14 and cooperate, 23 lumen diameter of frictionless sleeve section is more than or equal to F.F.
22 lumen diameter of screw shell section, 25 length 20mm of tail end.1 end handle 15 of lead rod stretches out trepan inner cavity 26, convenient for hand-held behaviour
Make.
Specific implementation process are as follows: patient lies prone is on operating bed, and after puncture needle is punctured to intervertebral foramen or articular process, indwelling is led
Silk, guide rod chamber 11d are covered on seal wire and are sent along seal wire to preforming position, in the process before probe portion 11a and anchoring needle 12
The pyramidal structure at end expands soft tissue, and probe portion 11a is inserted into intervertebral foramen, and is close to forming part is needed, sharp
Anchoring needle 12 is anchored on the preforming position of articular process, plays fixed function to lead rod 1；2 front end of trepan from 11 tail portion 11c of guide rod into
Enter, 14 diameter of slow-motion threaded rod is small, can smoothly enter into trepan inner cavity 26, when F.F. screw shell section 22 and F.F. threaded rod 13 cooperate
Process, trepan 2 are abraded sclerotin with fast speed and formed, and the slow-motion screw shell section when needing fine operation in molding latter stage
24 with slow-motion threaded rod 14 cooperate, screw pitch is small, trepan 2 rotation one circle its front end sawtooth 21 promote it is small, in trepan progradation
In, anchoring needle, which is fixed on, to be needed on molding sclerotin, and anchoring needle is exited with molding sclerotin after the completion of molding, the utility model
Not only it ensure that molding speed was controllable, but also can reduce risks.It can the disposable nothing to intervertebral hole forming using the utility model
It need to be formed step by step using multiple trepans, it is easy to operate without using soft tissue dilator, it is highly-safe.
Claims (8)
1. being anchored screw-in intervertebral foramen former, including trepan, trepan barrel forward end has sawtooth, it is characterized in that the former
It further include lead rod, the lead rod includes hollow guide rod, F.F. threaded rod and slow-motion threaded rod, and F.F. threaded rod is arranged in guide rod
Front, the setting of slow-motion threaded rod are greater than slow-motion screw thread shank diameter in guide rod rear portion, F.F. screw thread shank diameter, and on F.F. threaded rod
External screw thread screw pitch is greater than external screw thread screw pitch on slow-motion threaded rod, and guide rod front end stretches out F.F. threaded rod and forms probe portion, F.F.
Threaded rod is fixedly arranged at the front end with anchoring needle；The trepan sleeve includes F.F. screw shell section and slow-motion screw shell section, F.F. spiral shell
The internal screw thread of line sleeve sections is matched with the external screw thread of F.F. threaded rod, the internal screw thread and slow-motion threaded rod of slow-motion screw shell section
External screw thread match, in trepan progradation, F.F. screw shell section and slow-motion thread bush when F.F. threaded rod constraint relief
Cylinder section and slow-motion threaded rod enter cooperation.
2. anchoring screw-in intervertebral foramen former according to claim 1, it is characterized in that guide rod deviates F.F. threaded rod axis
The heart is arranged by outer diameter end, and anchoring needle is parallel with guide rod long axis and is arranged far from guide rod.
3. anchoring screw-in intervertebral foramen former according to claim 1, it is characterized in that before the probe portion and anchoring needle
End is tapered end.
4. anchoring screw-in intervertebral foramen former according to claim 1, it is characterized in that F.F. threaded rod front is smooth
Section, rear portion are thread segment, and F.F. screw shell section is arranged close to trepan sawtooth.
5. anchoring screw-in intervertebral foramen former according to claim 4, it is characterized in that the screw thread segment length of F.F. threaded rod
Spend 5-7mm, F.F. screw shell segment length 10-14mm.
6. anchoring screw-in intervertebral foramen former according to claim 1-5, it is characterized in that guide rod rear end is arranged
There is handle, is equipped with cue mark in anchoring needle long axis extended line and handle intersection.
7. anchoring screw-in intervertebral foramen former according to claim 1-5, it is characterized in that slow-motion threaded rod position
In outside body.
8. anchoring screw-in intervertebral foramen former according to claim 1, it is characterized in that the trepan sleeve tail end is three
Prismatic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821464776.9U CN209203416U (en) | 2018-09-07 | 2018-09-07 | It is anchored screw-in intervertebral foramen former |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821464776.9U CN209203416U (en) | 2018-09-07 | 2018-09-07 | It is anchored screw-in intervertebral foramen former |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209203416U true CN209203416U (en) | 2019-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821464776.9U Active CN209203416U (en) | 2018-09-07 | 2018-09-07 | It is anchored screw-in intervertebral foramen former |
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| Country | Link |
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| CN (1) | CN209203416U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108836421A (en) * | 2018-09-07 | 2018-11-20 | 山东省文登整骨医院 | Intervertebral foramen former |
-
2018
- 2018-09-07 CN CN201821464776.9U patent/CN209203416U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108836421A (en) * | 2018-09-07 | 2018-11-20 | 山东省文登整骨医院 | Intervertebral foramen former |
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