WO2005011507A1 - A dilator for forming a cavity within the vertebral body - Google Patents

A dilator for forming a cavity within the vertebral body Download PDF

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Publication number
WO2005011507A1
WO2005011507A1 PCT/CN2003/000771 CN0300771W WO2005011507A1 WO 2005011507 A1 WO2005011507 A1 WO 2005011507A1 CN 0300771 W CN0300771 W CN 0300771W WO 2005011507 A1 WO2005011507 A1 WO 2005011507A1
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WO
WIPO (PCT)
Prior art keywords
cavity
tube
dilator
forming
outer tube
Prior art date
Application number
PCT/CN2003/000771
Other languages
French (fr)
Chinese (zh)
Inventor
Dewei Zou
Original Assignee
Dewei Zou
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to CN03207090.X priority Critical
Priority to CN 03207090 priority patent/CN2638760Y/en
Application filed by Dewei Zou filed Critical Dewei Zou
Publication of WO2005011507A1 publication Critical patent/WO2005011507A1/en

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/88Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/885Tools for expanding or compacting bones or discs or cavities therein
    • A61B17/8852Tools for expanding or compacting bones or discs or cavities therein capable of being assembled or enlarged, or changing shape, inside the bone or disc
    • A61B17/8858Tools for expanding or compacting bones or discs or cavities therein capable of being assembled or enlarged, or changing shape, inside the bone or disc laterally or radially expansible
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1662Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
    • A61B17/1671Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the spine

Abstract

A dilator for forming a cavity within the vertebral body consists of a hollow outer tube (1) and an inner tube (2) inserting into the hollow outer tube (1). The two tubes are fixed at one end and the outer tube (1) is provided with an elastic expandable section (12), the other end of the two tubes is slidingly connected.

Description

Forming a cavity for pushing the dilator body

Technical collar city

The present invention relates to a medical device, particularly it relates to a method for forming a cavity dilator pushing body. Background technique

¾ a bone disease caused by spinal compression fractures, a large degree of treatment. Currently, the use of means for expansion Nang ball pushing body kyphoplasty procedure for treatment of spinal compression fractures have obtained satisfactory results earlier.

This special ball Nang means comprises a hollow shaft disposed at the distal end of the balloon, the rod having a rear end connected to a high pressure injector pressure measuring and control apparatus and vacuum apparatus was evacuated. In the molding operation by the push bar through the percutaneous type "C" arm X-ray machine injury pushed into the guide, guide the guide pin in the drill core drill push injury, establishing the working path, and then fed through a working channel special high pressure ball Nang in type "C" arm X-ray machine was observed, with a high pressure injector with a pressure measuring device and a control injection of the contrast agent into the Nang ball, the ball Nang expansion, injury recovery and correction of kyphosis push height, after the ball exit Nang evacuated cavity produced after leaving the ball Nang expansion, and finally to the low pressure injection of bone cement within the cavity so as to form a cavity in the casting operation is complete. Nang expansion ball pushing body and kyphoplasty compared to conventional push-molding operation, since the cancellous bone due to osteoporosis can fracture collapse are pressed to push up and down the hook member and the cortical bone endplate around to densify and shape of the wound and pushed height is restored, and then injected into the bone cement cavity full four weeks, and therefore, increases the effectiveness of both the reset push body, and from the fundamental avoided simply pushing body angioplasty potential danger caused by bone cement caused by the leak, but also reduce the complications.

But in this special ball Nang surgery requires a lot of stress, so that the ball must preclude Nang ^ bovine sheet with a special production process is made with a special, high cost. Meanwhile, since the material does not have the ball Nang a clear image and its expansion principle under X-ray, so that the ball Nang also be equipped with a high pressure injector with a pressure measuring and control apparatus to inject a contrast medium, so that the ball clear contrast expansion and Nang , also required pumping fluid suction device with a contrast agent to make the ball out Nang vacuum state, the configuration of these components will necessarily make the device into a production Nang ^ ball head when high.

On the other hand, since the ball is Nang expanded by injection of the contrast agent, and because the ball is characterized in Nang flexible such that its expanded shape of the cavity formed can not be precisely controlled, because of how small will be injected with a contrast agent , the size and speed of the pressure chamber so as to form a shape is random, stable and accurate enough. Physicians need a lot of man-made ball viewed Nang expansion molding procedure under the guide of the X-ray machine, and the injection of bone cement reset case, and because the volume of the cavity can not be accurately grasp, therefore, the amount of bone cement injected basically depends on how much the surgery physician's experience and guidance in order to better grasp the X-ray, the higher the difficulty of operation. Further, using the push ball Nang formed in the wound cavity, bet t needs to be monitored in the pressure developing agent, when the expanding need to spare a ball Nang contrast agent, the process operation is very complicated.

Final aspect, the ball is a soft material after all Nang, in which a surgical procedure which not only withstand greater pressure expansion, but also loose bone contacting spiny push injury, more easily damaged, once the ball Nang rupture, leakage of contrast medium within which to push in the injury, will lead to surgical failure, a serious threat to the patient's health and even life safety, there are security risks. SUMMARY

Object of the present invention is to provide a method for forming a cavity dilator pushing body, which can significantly reduce costs, simplify surgical procedures, it is possible to ensure high security.

Another object of the present invention is to provide a method for forming a cavity dilator pushing body, which can accurately reflect the volume of the cavity is formed, to facilitate grip of injecting an amount of bone filler shield.

Aspect of the present invention is as follows: A method for forming a cavity dilator pushing body, characterized in that an outer tube and a hollow inner tube disposed through the hollow outer tube composed of the two at fixed at one end of the outer tube and two fixed end positions provided with an elastic expansion section, while the other two ends are sleeved.

As a further improvement of the present invention, two of the sleeved end is provided with an elastic reflect "diverging section volume mark.

Since the present invention is in use, it can be sleeved end of the inner tube and a relative axial position between the outer tube, thereby allowing the outer section of the outer tube elastically expandable expansion cavity is formed, since the present invention uses only two a ferrule fixed to an end of the outer tube member and an opening formed strip, and therefore, the manufacturing cost will be substantially reduced; and the only catheter inserted from the present invention, by an end sleeved tube can be adjusted within the elastic an expanded section expanded to form a cavity, reducing the need to further conventional ball Nang pressure syringe equipped with a pressure measuring device and pumping fluid suction equipment, greatly reduce the cost, and does not require injection of contrast agent because it is possible to simplify the surgical procedure Since the expansion of the elastic segment of the present invention per se is a kind of tear strip, in the process as long as the flared section of the elastic expansion, this stent is rotated appropriately, it is possible to form a satisfactory cavity, high security.

Further, since the present invention is provided to the movable end of the sleeve is provided with a scale line, so that, during surgery can intuitively grasp the elastic hollow volume expanding portion expanding outward is formed, to facilitate the physician to grasp the amount of bone filler injection, it is possible reduce the difficulty of operation to some extent. BRIEF DESCRIPTION

Figure 1 is a straight strip-shaped tear strip invention, the screw structure with a front view of an embodiment not use state. FIG 2 is a perspective view of an unused state illustrated embodiment of the invention FIG.

Example 3 of the present embodiment protrudes to the outer tube inner end fixed to the invention in a schematic view of the tube.

Example 4 of the present invention, a schematic embodiment of FIG tear strip was inclined strip.

FIG 5 is a schematic diagram of the present embodiment of the invention as a lone tear strip shape.

FIG 6 is a schematic view of embodiments of the invention the tear strip curvilinear shape.

FIG 7 of the present invention as a tear strip between the width of the elastic embodiment Ρ thin blanket embodiment ^ ^ Τ ^ «Η¾ FIG. FIG Article 8 of the present invention, the opening elastically embodiment ^^ schematic irregularly arranged apart expansion. FIG 9 the present invention is provided in the tube at the grip end piece screwed Example FIG.

FIG inner tube 10 of the present invention to provided a schematic diagram of the grip end of the collar embodiment.

Example thread segments on the grip tube end disposed within the nut 11 of the present invention. FIG. FIG outer tube 12 of the present invention embodiment will be omitted in the active schematic embodiment of the sleeved end of the grip portion.

13 a front view of the embodiment using state of the embodiment of the present invention shown in FIG.

Figure 14 a perspective view showing a use embodiment of the present invention shown in FIG.

FIG 15 FIG inserted injury during operation of the push schematic embodiment shown embodiment of the present invention.

Example 16 of the present embodiment shown in FIG. 1 in FIG injury during operation of the push expandable cavity forming a schematic view of the present invention. FIG Π enlarged view of the present invention is provided in the mark portion 6 A portion in FIG.

FIG 18 of the present invention, the mark is provided to one embodiment of a schematic embodiment of an outer tube.

19 of the present invention, FIG tick marks provided on the outer tube schematic diagram of another embodiment.

FIG 20 a schematic embodiment of the present invention, the mark provided on the outer tube of the third embodiment.

FIG 21 of the present invention, while the scale line end surface disposed to Example schematic embodiment of the outer tube holding portion. Example 22 of the present invention is provided on the scale line while gripping portion outer peripheral surface of the tube. FIG. Example 23 a schematic embodiment of the outer tube is made of a transparent material of the present invention.

FIG 24 of the present invention elastically expandable segment in Example schematic embodiment of a double pipe.

FIG double tube 25 of the present invention, a straight section of the tear strip wide strip of Example ^ «: open FIG. FIG 26 is a tear strip ½ pipe bomb was inclined strip embodiment ϋ¾ spread apart schematic embodiment of the present invention. FIG 27 of the present invention J½ pipe was flared tear strip schematic example of an elastic arcuate embodiment. FIG 28 ^ tear strip form elastic tube section curved embodiment · ± Τ ^^ a schematic view of the invention opening!. FIG 29 of the present invention is provided to the movable end of the sleeve is provided a schematic configuration of Example embodiment axial positioning. FIG 30 of the present invention to use sleeved end of the concavo-convex structure diagram of a mating embodiment. FIG 31 of the present invention to use an end sleeved with a further relief structure schematic diagram of the embodiment. detailed description

Example 1

Referring to FIG. 1, 2, the present invention provides for forming a cavity dilator pushing body, the inner tube 2 consisting of the inner tube 1 is composed of a hollow outer tube 1 and disposed through the outer hollow, the inner tube 2 the end of the outer hollow tube 21 and the fixed end portion 11 of the inner pipe 2 is fixed end to the fixed end 21 of compression portion 11 of the outer tube 1, may protrude within a certain distance of the outer tube, FIG. 3 Fig. For fixed form inner tube end portion 21 and the outer tube end portion 11 may be connected, or two integrally formed as welds or screw threads, in short, as long as the interlocking outer from the inner pipe tube fixing structure of the end portion 11 1 may be used. use. The outer tube 1 is provided with an elastic expandable segment 12 at a position two fixed end, and the two 1, 2 of the other end of the sleeved.

In the present embodiment, the elastic expanding portion 12 integrally formed on the outer tube 1 and a certain length of the pipe section composed of a single layer, and in that the single tube sheet provided with several openings 3 of the outer tube 3 of the form of the axial opening 1 parallel straight strips, as shown in Figure 1-3. Referring to Figure 4, the opening may also be in the axial direction of the outer tube 1 obliquely angled strip 3 bar. Referring to Figure 5, 6, the tear strip 3 may also be curved or arcuate strip-shaped strip along the outer tube 1 substantially axially extending, equally possible to achieve the effect of the expansion into the cavity, and the arcuate or curved shaped tear strip 3 also can better ensure the cavity wall flat condition. Equal to the width of the present embodiment example, the structure shown in FIGS. 1 to 6 which, each tear strip 3. Another Bu Xi, see FIG. 7, the opening width of each bar 3 may not be equal, and exhibit a regular array 31 and narrow tear strip 3 circumferentially spaced wide tear strip. Referring again to Figure 8, each opening 3 of 31 showed irregular arrangement state, which includes the irregular arrangement of the width of the opening strip not rule, also includes various strip widths circumferentially distributed openings no rules. In summary, the present invention provides an elastic expandable segment 12 in an expanded configuration of the tear strip 1 is provided on the outer hollow tube, thus, is provided on the outer hollow tube 1 may have a tear strip 3 can be formed can be extended, to the opening strip opening width, number, and distribution in the circumferential direction may not be limited. Based on this, even on the tube 1 only two openings provided in the outer hollow article can be achieved flared to form a cavity, such as along the axial direction of the outer tube 1 is disposed at a radial location of the two openings, i.e. the opening 3 of the present two sector, the drawings will be omitted. But one thing to note, the width of the tear strip 3 can not be too small, or may affect the formation of the cavity.

In the present embodiment, as shown in FIGS. 1 to 8, the inner tube 2 in the sleeved end protrudes in a certain length of the hollow tube forming the outer end of the grip 22, to facilitate grasping, the outer tube 1 may be at the end shaped grip portion provided expanded 13. Of course, if the tube 1 in the evening Bu sleeved end disposed relatively large concave holes, the inner tube 2 may not protrude as long as the grip tube 2 to produce the indwelling position relative to the outer tube 1 can, BRIEF omitted.

The two sets of events with the set screw, see FIG. 4, the inner tube 2 to grip a length of external threads disposed 22,122 end, and an inner wall of the grip portion 13 is provided with an internal thread 131. Further, referring to FIG. 9, 10, is a rotating inner tube 2 is more convenient, the inner tube 2 is provided with a further adjusting member 24. When the adjusting member 24 is disposed on the collar 241 or 242 of the inner tube 1 is screwed endmost sheet, the sheet 241 and screwed collar 242 may be formed after the stent disposed in groups according to the invention can also be produced in integrally molding the grip piece 241 screwed or collar 242 may swirl the inner tube 1 more convenient. Another Xi Bu, see FIG. 11, the adjustment member 24 may also be provided on the second outer threaded section of the inner tube nut 221 243, when rotating the nut 243 can be forced to the outer tube 1 and the inner tube 2 relative positional movement the nut 243-- aspect can adjust the relative axial position of the two, may also play a role to prevent the positioning of two axial position. Obviously, the outer tube 1 to expand shaped grip portion provided sleeved end 13, may be omitted, as shown in Fig.

In use, referring to FIG. 13, 14, through the sleeved end thread structure, the inner tube 2 or a rotating outer tube 1 rotating both the relative axial position is generated, thereby allowing the elastic expansion of the outer tube 1 flared section 12 forms a cavity. Since the present invention only two of the fixed end of the ferrule member and the outer tube defines an opening 13 formed on the article, a substantial reduction in production costs; 15, 16, since only the dilator of the present invention by the inner conduit inserting, rotating inner tube or the outer tube 2 can make an elastically expanded outer segment 12 expanded to form a cavity, simplifies the surgical procedure and operating difficulty. Since the section 12 itself is elastically expanded by a number of tear strip 3 composed of, as long as in the process of expansion of the elastic section 12 is extended, the present stent is rotated appropriately, it is possible to form a satisfactory cavity, high security.

As a further improvement of the present invention, referring to FIG. 6, 17, to the sleeved end of the two tubes is provided with a reflecting an elastic expandable segment 12 volumes of tick marks 23, the scale line 23 is provided in two outer wall of the inner tube, in this embodiment the the scale line 23 may be disposed on the external thread segments 221 of the inner tube 1 the gripping end 22 can be simultaneously observed and recorded during the scale rotating screw structure. With experience, most patients injected bone filler is substantially 5 ml, tick marks may be provided in 5 ml Π limit, an upper limit may be tailored according to the scale line 23 for a particular patient. Referring to Figure 18, 19, the scale line 23 may be provided on an outer wall of the outer tube and the outer tube 1 and the scale lines 23 are provided in positions corresponding to the visible portion 14, and the inner tube 2 is provided with respect to the outer tube 1 23123 tick size and visual reference point 14, in this configuration, the outer tube portion 14 of the visual segment 141 is a transparent or axially through the elongated hole 142, and the size of the inner tube 231 of reference 2 the other is a transparent segment corresponding to the 141 or through holes 142 striking color line 2311 or 2312 color ring circumference, that ease the identification of the eye catching color or alert may be employed, such as red, yellow, blue, black; Alternatively, referring to Figure 20, it may be visible portion of the outer tube 1 is disposed through the axially elongated holes 142, and the reference dimension of the inner tube 2312 may be protruding through hole 142 in the pointer 2313. Further, referring to FIG. 21, 22, 23 of the tick marks 132 may be provided on the end surface 133 or the outer circumferential surface of the grip portion 13 of the outer tube 1. Cylinder words, the scale line 23 may be provided at any position of the sleeved end of the two, as long as the reaction volume of the cavity is formed, the position of the tick 23 is provided is not limited.

The present invention is made of an outer tube 1 and inner tube 2 may be a variety of materials preclude the use of a metal or a polymer material, a clear contrast can be generated during surgery, can be applied more widely to be formed in the cavity of the medical field, and uses plastics or polymer material or a mixture of plastic resin, not only has better characteristics of elastic deformation, lower cost, while the transparent or translucent plastic or plastic mixture or a resin material, when the mark 23 provided on the outer when the tube 1, the outer tube may not necessarily be additionally provided on a visible portion 14, as shown in Fig. However, the outer tube of a metal material to set visible segment 14.

The provision of the scale line 23, and to use two sleeved threaded mating end, it will not only more intuitive control cavity volume, easy to grasp the bone cement injection amount, and can end 22 by rotating the grip or grip holding unit 13 can also control the accuracy of the trimming from the cavity volume, and because the opening 3 of a certain rigidity, so that the shape of the cavity is substantially constant, if the change of the opening 3 of the length of the opening, the elastic distribution state, it is possible to artificially control the shape and volume of the cavity, thus also facilitating a physician to grasp the amount of bone filler injection, the difficulty of operation can be reduced to some extent. Example 2

This embodiment is an example of the structure of embodiment 1, using a material, principle, and effect is substantially the same during use, will not be repeated similarities, the differences will be described in detail only.

One difference, see FIG. 24, with respect to Example 1 ½ elastic expansion of the single-pipe section 12, the present embodiment the resilient expandable section 12 is constituted by the embodiment 1 is provided on a length of the outer tube of double jacket tube section 4 is provided, which double ^ Shu pipe inner tube section 41 of the floor sections 42 are set to the number of sheets tear strip 411, 421, and the opening inner pipe tear strip 411 of the opening strip 11 and the outer tube section 42 of the opening 421 of the 4211 phase shifted . The double-pipe outer sleeve disposed outside the inner pipe section on the pipe section 41 can be composed of the 42 solid sleeve 4, e.g., can be attached to the outer pipe section provided in a single layer in Example 1 Bu tube 42 can be realized .

Thus, the process of expanding a cavity of the outer section 12 is elastically expanded, the tear strip layers 411, 421 since the opening will be 4111, 4211 and phase shifting a continuous wall can be formed without expansion gap, whereby, in the omitted rotary expander during surgery operation, easier to use, and can even cause the collapse of the cancellous bone and not to push the extrusion gap of cortical bone endplates of the upper and lower body and around to easy bleeding bone filler is injected drain, better security.

This embodiment tear strip 41, 42 of the two pipe sections 411 embodiment, the width of the opening 421, the number and the distribution in the circumferential direction is the same as in Example 1, but note that the two embodiment examples tear strip 411, 421 openings 4111, 4211 should be shifted with respect to this feature. Referring to Figure 25, tear strip and the strip to the straight outer tube 1 axially parallel, make two tear strip 411, the openings 421 4111 4211 homogeneous staggered, to expand the outer configuration process or a continuous closure wall of the expansion ; Referring to Figure 26, tear strip for the helical strip and the outer tube 1 axially angled, tear strip 411 can be made of two layers, the opening 421 of 4111, 4211 or inclined angularly offset relative to the opposite direction; see FIG. 27, for curved strip tear strip outer tube 1 substantially along the axial direction 411, 421, the opening 4111, or 4211 phase offset angle bend direction opposite; see FIG. 28, an opening for the strip-shaped curve, the curve can be made opposite the opening angle or phase offset. In this way, the same can produce a more complete expansion of the wall, better surgical results.

Bis the difference, relative to the threaded mating Example 1 two sleeved, the present embodiment the two sleeved end uses a sliding fit. Referring again to Figure 24, the sliding fit is a clearance fit may be transition fit, for the tube section of the gap or transition fit, the may be provided a guide section having a certain length, so that the inner bore Xi Bu tube 1 can and the inner tube 2 an outer wall having a length of a contact surface, and having a good oriented. Transition fit or clearance for the structure, such that the resilient expandable section 12 when the outer cavity form a satisfactory expanded to some extent, when the inner tube 1 and outer tube 2 will not continue to produce a satisfactory relative axial movement of the formed destroyed cavity, preferably to 5 provided with an axial positioning structure thereon sleeved end. Of course, if you do not set the positioning structure by surgical personnel to participate manual control support it is also possible.

Referring to Figure 24, the axial positioning structure 5 to bite in the inner tube of the elastic locking piece 51 2. Expanding rash at the outer segment 12 formed in the elastic expansion cavity satisfactory state, the elastic locking pieces 51 bite in the inner tube 2 gripping end 22 can limit the relative axial movement of the two positions. Referring to Figure 29, the axial positioning structure 5 may also be resilient positioning structure provided in a sleeved end of the outer tube 52, which includes a plurality of axially resilient sheet 521, and at least two opposing elastic pieces 521 is provided with stopper 5211, the external jacket of the elastic plate 521 is provided with a retaining ring 522, the inner diameter of the retaining ring 522 is smaller than the circumferential diameter of the elastic sheet 521 consisting of, and slightly larger than the outer diameter of the inner tube 2. When the elastically expanding flared section 12 to form a satisfactory cavity, the retaining ring 522 to move stopper 5211 and the direction of the stopper 521 to the outer periphery of the tight elastic pieces, by friction jackets site, can be restricted two axial movement relative position. Of course, the axial positioning structure 5, other conventional techniques to achieve the axial positioning structure may be employed.

Further, with the sliding interference fit may also be employed, since such a tight fit, a relative position in the two outer and the process by the expansion section 12 is elastically expanded length of the cavity is formed, a large operating force needed, but this interference fit axially positioned with good effect, axial positioning structure may be omitted.

In the embodiment when the present embodiment can be directly drawn at the end of the inner tube 2 activity Shu Release or outer tube 1, and with reference to the scale line 23 and the X-ray machine can form a satisfactory guiding cavity, easy to operate and simple. Example 3

This embodiment structure 1, Example 2, using a material, principle, and effect is substantially the same procedure used, similarities will not be repeated, only details of the differences with respect to Example 1 with the threads, 2 and sliding fit, for example, two in the present embodiment using the sleeved end of the concavo-convex structure of the complex.

Referring to FIG. 30, 31, the uneven structure 6 comprises an inner diameter of the outer tube disposed in the circumferential groove 61 and the number of tracks 2 provided in the outer diameter of the inner and outer tubes cooperating convex ring groove 1 62; or recess exchanging the positions of the convex ring 61 and 62, i.e., the inner diameter of the outer tube 1 provided the number of channels convex ring 62 and the inner tube outer diameter of the circumferential groove 612 cooperating set.

Finally, it is noted that the present invention in various embodiments are merely provided in several possible embodiments, other embodiments for the combination of these features are also very much constituted, for example, the elastic expansion section bis the combination of layers with the threaded pipe structure, or a combination of the single tube segment structure and slide structure, or a combination of the single tube section and the like of the concavo-convex structure, not mentioned in detail. Example Structure recombined by the respective technical features provided, also should be considered a structure provided by the invention, since the various features of the invention have been disclosed in the accompanying drawings, it is no longer possible to draw various embodiments recombinant form BRIEF embodiment, no longer provide the appropriate text.

Claims

Claims
1. A method for forming a cavity in the body pushing the dilator, characterized in that it is an outer tube and a hollow inner tube disposed through the hollow outer tube composed of the two fixed end, and the outer in the two pipe ends provided at a position fixing elastic expansion section, and the other end of the two is sleeved.
2. The upper dilator for forming a cavity in said pushing body 1, characterized in that said elastic segment expanded by a predetermined length is provided on the outer tube constituting a single-layer pipe, and the pipe section as claimed in claim single sheet strip provided with several openings.
According to claim cavities for forming a dilator to push the body 1, characterized in that the elastic expansion section is constituted by a length of tube disposed in the outer bilayer of the sleeved tube segment, the double jacket set the number of segments are disposed tube sheet tear strip, and two pipe openings phase offset strip.
According to claim 2 or claim 3 for forming a cavity dilator pushing body, characterized in that the tear strip and the outer tube was axially parallel straight strips; or the tear strip the outer tube was axially obliquely angled strip; or the tear strip along the tube form of substantially axially outer strip-like arcuate or curved strip. .
According to claim 2 or claim 3 or 4 forming a cavity dilator pushing body, characterized in that each of said openings is equal to the strip width.
According to 2 or 3 or 4, wherein the push body forming a cavity stent, wherein each of said tear strip widths are not equal, and the opening section of various widths spaced circumferentially claim regularly arranged or irregularly arranged.
1-3 according to any one of the expander cavity formed in the pushing body, characterized in that the elastic expansion segments integrally formed on the outer wall of the outer tube connection, or a combination as claimed in claim wall.
Bu according to claim any one of claim 3 for forming a cavity dilator pushing body, characterized in that the fixed end of the inner tube is reduced in the fixed end portion of the outer tube; or the the fixed end of the tube projecting to a distance from the outer tube.
According to any of claims 1 to 3 for one of the cavities formed in the stent pushing body, characterized in that the tube is sleeved on the inner end of the outer projecting length of the hollow tube is formed grip end.
According to claim dilator for forming a cavity in said pushing body 9, characterized in that the two sleeved on the sleeved end of threaded mating, gripping an end portion of the inner tube setting a length of the external thread, an internal thread corresponding to the outer tube.
According to claim dilator for forming a cavity in said pushing body 9 or 10, characterized in that the grip end of the inner tube is provided with adjustment means.
According to claim dilator for forming a cavity in said pushing body 11, wherein the adjustment member is disposed within the inner tube end piece screwed portion or collar disposed on the inner tube or thread nut segment.
According to any of claims 9-12 for one of the expansion cavity is formed in the pushing body, characterized in that the outer tube sleeved gripping portion is provided with an enlarged end.
14, according to claim dilator forming a cavity in said pushing body 9, characterized in that, in the two sleeved end sleeved sliding fit.
Claim 15. The dilator for forming a cavity in said pushing body 14, wherein the sliding fit is a clearance fit.
Claim 16. The dilator for forming a cavity in said pushing body 14, wherein the sliding fit is an interference fit or a transition fit.
17. The claim for forming a cavity in the dilator 16 of the pushing body, characterized in that, at the transition fit is provided with a guide section of a certain length.
Claim 18. The dilator for forming a cavity in said pushing body 14, wherein the inner and outer tube is not fixed to the end of the hollow tube is provided with an axial positioning structure.
19. The claim for forming a cavity dilator pushing body 18, wherein said structure is a ferrule axially positioned on the inner tube spring clips.
According to claim 20. A cavity 18 is formed in pushing the dilator body, characterized in that the axial positioning structure is a resilient positioning structure comprises an outer tube is not fixed to the end portion of the claim number axially elastic plate, and at least two elastic sheets disposed opposite circumferential diameter of the stopper, the outer sleeve in the outer tube is provided with a positioning elastic piece ring, the inner diameter of the positioning ring is smaller than an elastic sheet composed of an outer tube, and larger than the outer diameter of the inner tube.
Claim 21. The dilator for forming a cavity in said pushing body 9, characterized in that, in the two end sleeved with uneven structure employed.
22. A dilator for forming a cavity in said pushing body 21, wherein the uneven structure includes an outer tube inner diameter to the number of channels and the inner circumferential groove is provided in the tube diameter of the claims ring cooperating concave outer tube collar; or the concavo-convex structure includes an outer tube inner diameter of the collar the number of channels and the inner tube outer diameter of the circumferential groove provided in the mating collar.
Forming a cavity 23. A dilator as pushing body according to any of the preceding claim, characterized in that two of the sleeved end is provided with an elastic expandable segment reflects the volume mark.
24. The claim for forming a cavity dilator pushing body 23, wherein said scale line is provided in the tube wall.
While the inner tube 25. The forming cavity to claim dilator pushing body, characterized in that said scale line is provided on the outer tube wall, and is provided with a scale visible portion of the line 23, the relative to the outer tube is provided with a scale line and the visual size of the reference portion.
26. The right 'claims for forming a cavity in the dilator 25 of the pushing body, characterized in that the visible portion of the outer tube is axially elongated transparent or through-holes, and the inner tube reference to the size of the transparent segment corresponding to the through hole or eye-catching color line or color ring circumference.
27. The claim for forming a cavity dilator pushing body, characterized in that the visual portion of the outer tube is axially elongated a through hole 25, the inner tube and the size of the reference the through hole in the protruding portion of the pointer.
28. The claim for forming a cavity dilator to push the body 23, wherein the grip portion is provided on said scale line end surface of the outer tube or the outer circumferential surface.
Forming a cavity 29. A dilator as pushing body according to any of the preceding claim, characterized in that the outer tube and the inner tube using a polymer material or metal material.
30. The dilator for forming a cavity in said pushing body 29, wherein the polymeric material is a transparent plastic or plastic blend or claim purpose tree months.
PCT/CN2003/000771 2003-08-04 2003-09-12 A dilator for forming a cavity within the vertebral body WO2005011507A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN03207090.X 2003-08-04
CN 03207090 CN2638760Y (en) 2003-08-04 2003-08-04 Dilator for forming cavity in pyramid

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2003264318A AU2003264318A1 (en) 2003-08-04 2003-09-12 A dilator for forming a cavity within the vertebral body
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EP1787593A1 (en) 2004-05-19 2007-05-23 Sintea Biotech S.p.A. Device for creating bone cavities
US7662187B2 (en) 2002-10-29 2010-02-16 Kyphon Sarl Interspinous process implants and methods of use
US7666209B2 (en) 1997-01-02 2010-02-23 Kyphon Sarl Spine distraction implant and method
US7682376B2 (en) 2006-01-27 2010-03-23 Warsaw Orthopedic, Inc. Interspinous devices and methods of use
US7691130B2 (en) 2006-01-27 2010-04-06 Warsaw Orthopedic, Inc. Spinal implants including a sensor and methods of use
US7695513B2 (en) 2003-05-22 2010-04-13 Kyphon Sarl Distractible interspinous process implant and method of implantation
US7776069B2 (en) 2002-09-10 2010-08-17 Kyphon SÀRL Posterior vertebral support assembly
US7803190B2 (en) 2002-10-29 2010-09-28 Kyphon SÀRL Interspinous process apparatus and method with a selectably expandable spacer
US7846186B2 (en) 2005-06-28 2010-12-07 Kyphon SÀRL Equipment for surgical treatment of two vertebrae
US7879104B2 (en) 2006-11-15 2011-02-01 Warsaw Orthopedic, Inc. Spinal implant system
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US7955392B2 (en) 2006-12-14 2011-06-07 Warsaw Orthopedic, Inc. Interspinous process devices and methods
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US7988709B2 (en) 2005-02-17 2011-08-02 Kyphon Sarl Percutaneous spinal implants and methods
US7993374B2 (en) 1997-01-02 2011-08-09 Kyphon Sarl Supplemental spine fixation device and method
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US8029550B2 (en) 2006-01-18 2011-10-04 Warsaw Orthopedic, Inc. Intervertebral prosthetic device for spinal stabilization and method of implanting same
US8034080B2 (en) 2005-02-17 2011-10-11 Kyphon Sarl Percutaneous spinal implants and methods
US8034079B2 (en) 2005-04-12 2011-10-11 Warsaw Orthopedic, Inc. Implants and methods for posterior dynamic stabilization of a spinal motion segment
US8038698B2 (en) 2005-02-17 2011-10-18 Kphon Sarl Percutaneous spinal implants and methods
US8043378B2 (en) 2006-09-07 2011-10-25 Warsaw Orthopedic, Inc. Intercostal spacer device and method for use in correcting a spinal deformity
US8048117B2 (en) 2003-05-22 2011-11-01 Kyphon Sarl Interspinous process implant and method of implantation
US8048118B2 (en) 2006-04-28 2011-11-01 Warsaw Orthopedic, Inc. Adjustable interspinous process brace
US8048119B2 (en) 2006-07-20 2011-11-01 Warsaw Orthopedic, Inc. Apparatus for insertion between anatomical structures and a procedure utilizing same
US8057513B2 (en) 2005-02-17 2011-11-15 Kyphon Sarl Percutaneous spinal implants and methods
US8062337B2 (en) 2006-05-04 2011-11-22 Warsaw Orthopedic, Inc. Expandable device for insertion between anatomical structures and a procedure utilizing same
US8070778B2 (en) 2003-05-22 2011-12-06 Kyphon Sarl Interspinous process implant with slide-in distraction piece and method of implantation
US8083795B2 (en) 2006-01-18 2011-12-27 Warsaw Orthopedic, Inc. Intervertebral prosthetic device for spinal stabilization and method of manufacturing same
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US8105358B2 (en) 2008-02-04 2012-01-31 Kyphon Sarl Medical implants and methods
US8114136B2 (en) 2008-03-18 2012-02-14 Warsaw Orthopedic, Inc. Implants and methods for inter-spinous process dynamic stabilization of a spinal motion segment
US8114131B2 (en) 2008-11-05 2012-02-14 Kyphon Sarl Extension limiting devices and methods of use for the spine
US8114132B2 (en) 2010-01-13 2012-02-14 Kyphon Sarl Dynamic interspinous process device
US8118839B2 (en) 2006-11-08 2012-02-21 Kyphon Sarl Interspinous implant
US8118844B2 (en) 2006-04-24 2012-02-21 Warsaw Orthopedic, Inc. Expandable device for insertion between anatomical structures and a procedure utilizing same
US8128663B2 (en) 1997-01-02 2012-03-06 Kyphon Sarl Spine distraction implant
US8128661B2 (en) 1997-01-02 2012-03-06 Kyphon Sarl Interspinous process distraction system and method with positionable wing and method
US8147517B2 (en) 2006-05-23 2012-04-03 Warsaw Orthopedic, Inc. Systems and methods for adjusting properties of a spinal implant
US8147526B2 (en) 2010-02-26 2012-04-03 Kyphon Sarl Interspinous process spacer diagnostic parallel balloon catheter and methods of use
US8147548B2 (en) 2005-03-21 2012-04-03 Kyphon Sarl Interspinous process implant having a thread-shaped wing and method of implantation
US8157841B2 (en) 2005-02-17 2012-04-17 Kyphon Sarl Percutaneous spinal implants and methods
US8157842B2 (en) 2009-06-12 2012-04-17 Kyphon Sarl Interspinous implant and methods of use
US8216276B2 (en) 2004-05-21 2012-07-10 Warsaw Orthopedic, Inc. Interspinous spacer
US8226653B2 (en) 2005-04-29 2012-07-24 Warsaw Orthopedic, Inc. Spinous process stabilization devices and methods
US8262698B2 (en) 2006-03-16 2012-09-11 Warsaw Orthopedic, Inc. Expandable device for insertion between anatomical structures and a procedure utilizing same
US8317831B2 (en) 2010-01-13 2012-11-27 Kyphon Sarl Interspinous process spacer diagnostic balloon catheter and methods of use
US8349013B2 (en) 1997-01-02 2013-01-08 Kyphon Sarl Spine distraction implant
US8357181B2 (en) 2005-10-27 2013-01-22 Warsaw Orthopedic, Inc. Intervertebral prosthetic device for spinal stabilization and method of implanting same
US8372117B2 (en) 2009-06-05 2013-02-12 Kyphon Sarl Multi-level interspinous implants and methods of use
US8591549B2 (en) 2011-04-08 2013-11-26 Warsaw Orthopedic, Inc. Variable durometer lumbar-sacral implant
US8591548B2 (en) 2011-03-31 2013-11-26 Warsaw Orthopedic, Inc. Spinous process fusion plate assembly
US8641762B2 (en) 2006-10-24 2014-02-04 Warsaw Orthopedic, Inc. Systems and methods for in situ assembly of an interspinous process distraction implant
US8679161B2 (en) 2005-02-17 2014-03-25 Warsaw Orthopedic, Inc. Percutaneous spinal implants and methods
US8690919B2 (en) 2006-05-23 2014-04-08 Warsaw Orthopedic, Inc. Surgical spacer with shape control
US8771317B2 (en) 2009-10-28 2014-07-08 Warsaw Orthopedic, Inc. Interspinous process implant and method of implantation
US8814908B2 (en) 2010-07-26 2014-08-26 Warsaw Orthopedic, Inc. Injectable flexible interspinous process device system
US9980715B2 (en) 2014-02-05 2018-05-29 Trinity Orthopedics, Llc Anchor devices and methods of use

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US7666209B2 (en) 1997-01-02 2010-02-23 Kyphon Sarl Spine distraction implant and method
US8821548B2 (en) 1997-01-02 2014-09-02 Warsaw Orthopedic, Inc. Spine distraction implant and method
US8740943B2 (en) 1997-01-02 2014-06-03 Warsaw Orthopedic, Inc. Spine distraction implant and method
US8128661B2 (en) 1997-01-02 2012-03-06 Kyphon Sarl Interspinous process distraction system and method with positionable wing and method
US7993374B2 (en) 1997-01-02 2011-08-09 Kyphon Sarl Supplemental spine fixation device and method
US8540751B2 (en) 1997-01-02 2013-09-24 Warsaw Orthopedic, Inc. Spine distraction implant and method
US7828822B2 (en) 1997-01-02 2010-11-09 Kyphon SÀRL Spinous process implant
US8672975B2 (en) 1997-01-02 2014-03-18 Warsaw Orthopedic, Inc Spine distraction implant and method
US8568454B2 (en) 1997-01-02 2013-10-29 Warsaw Orthopedic, Inc. Spine distraction implant and method
US7901432B2 (en) 1997-01-02 2011-03-08 Kyphon Sarl Method for lateral implantation of spinous process spacer
US7918877B2 (en) 1997-01-02 2011-04-05 Kyphon Sarl Lateral insertion method for spinous process spacer with deployable member
US8617211B2 (en) 1997-01-02 2013-12-31 Warsaw Orthopedic, Inc. Spine distraction implant and method
US7955356B2 (en) 1997-01-02 2011-06-07 Kyphon Sarl Laterally insertable interspinous process implant
US8029542B2 (en) 1997-01-02 2011-10-04 Kyphon Sarl Supplemental spine fixation device and method
US8349013B2 (en) 1997-01-02 2013-01-08 Kyphon Sarl Spine distraction implant
US7776069B2 (en) 2002-09-10 2010-08-17 Kyphon SÀRL Posterior vertebral support assembly
US8007537B2 (en) 2002-10-29 2011-08-30 Kyphon Sarl Interspinous process implants and methods of use
US7803190B2 (en) 2002-10-29 2010-09-28 Kyphon SÀRL Interspinous process apparatus and method with a selectably expandable spacer
US8092535B2 (en) 2002-10-29 2012-01-10 Kyphon Sarl Interspinous process implants and methods of use
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US8048117B2 (en) 2003-05-22 2011-11-01 Kyphon Sarl Interspinous process implant and method of implantation
US7695513B2 (en) 2003-05-22 2010-04-13 Kyphon Sarl Distractible interspinous process implant and method of implantation
US8070778B2 (en) 2003-05-22 2011-12-06 Kyphon Sarl Interspinous process implant with slide-in distraction piece and method of implantation
EP1787593A1 (en) 2004-05-19 2007-05-23 Sintea Biotech S.p.A. Device for creating bone cavities
US8216276B2 (en) 2004-05-21 2012-07-10 Warsaw Orthopedic, Inc. Interspinous spacer
US8007521B2 (en) 2005-02-17 2011-08-30 Kyphon Sarl Percutaneous spinal implants and methods
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US8454693B2 (en) 2005-02-17 2013-06-04 Kyphon Sarl Percutaneous spinal implants and methods
US8679161B2 (en) 2005-02-17 2014-03-25 Warsaw Orthopedic, Inc. Percutaneous spinal implants and methods
US8029567B2 (en) 2005-02-17 2011-10-04 Kyphon Sarl Percutaneous spinal implants and methods
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US8096994B2 (en) 2005-02-17 2012-01-17 Kyphon Sarl Percutaneous spinal implants and methods
US8100943B2 (en) 2005-02-17 2012-01-24 Kyphon Sarl Percutaneous spinal implants and methods
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US7998174B2 (en) 2005-02-17 2011-08-16 Kyphon Sarl Percutaneous spinal implants and methods
US8147548B2 (en) 2005-03-21 2012-04-03 Kyphon Sarl Interspinous process implant having a thread-shaped wing and method of implantation
US7931674B2 (en) 2005-03-21 2011-04-26 Kyphon Sarl Interspinous process implant having deployable wing and method of implantation
US8591546B2 (en) 2005-03-21 2013-11-26 Warsaw Orthopedic, Inc. Interspinous process implant having a thread-shaped wing and method of implantation
US8034079B2 (en) 2005-04-12 2011-10-11 Warsaw Orthopedic, Inc. Implants and methods for posterior dynamic stabilization of a spinal motion segment
US8128702B2 (en) 2005-04-18 2012-03-06 Kyphon Sarl Interspinous process implant having deployable wings and method of implantation
US8109972B2 (en) 2005-04-18 2012-02-07 Kyphon Sarl Interspinous process implant having deployable wings and method of implantation
US7959652B2 (en) 2005-04-18 2011-06-14 Kyphon Sarl Interspinous process implant having deployable wings and method of implantation
US8226653B2 (en) 2005-04-29 2012-07-24 Warsaw Orthopedic, Inc. Spinous process stabilization devices and methods
US7846186B2 (en) 2005-06-28 2010-12-07 Kyphon SÀRL Equipment for surgical treatment of two vertebrae
US8357181B2 (en) 2005-10-27 2013-01-22 Warsaw Orthopedic, Inc. Intervertebral prosthetic device for spinal stabilization and method of implanting same
US8083795B2 (en) 2006-01-18 2011-12-27 Warsaw Orthopedic, Inc. Intervertebral prosthetic device for spinal stabilization and method of manufacturing same
US8029550B2 (en) 2006-01-18 2011-10-04 Warsaw Orthopedic, Inc. Intervertebral prosthetic device for spinal stabilization and method of implanting same
US7691130B2 (en) 2006-01-27 2010-04-06 Warsaw Orthopedic, Inc. Spinal implants including a sensor and methods of use
US7682376B2 (en) 2006-01-27 2010-03-23 Warsaw Orthopedic, Inc. Interspinous devices and methods of use
US8262698B2 (en) 2006-03-16 2012-09-11 Warsaw Orthopedic, Inc. Expandable device for insertion between anatomical structures and a procedure utilizing same
US8118844B2 (en) 2006-04-24 2012-02-21 Warsaw Orthopedic, Inc. Expandable device for insertion between anatomical structures and a procedure utilizing same
US8048118B2 (en) 2006-04-28 2011-11-01 Warsaw Orthopedic, Inc. Adjustable interspinous process brace
US8062337B2 (en) 2006-05-04 2011-11-22 Warsaw Orthopedic, Inc. Expandable device for insertion between anatomical structures and a procedure utilizing same
US8147517B2 (en) 2006-05-23 2012-04-03 Warsaw Orthopedic, Inc. Systems and methods for adjusting properties of a spinal implant
US8690919B2 (en) 2006-05-23 2014-04-08 Warsaw Orthopedic, Inc. Surgical spacer with shape control
US8048119B2 (en) 2006-07-20 2011-11-01 Warsaw Orthopedic, Inc. Apparatus for insertion between anatomical structures and a procedure utilizing same
US8043378B2 (en) 2006-09-07 2011-10-25 Warsaw Orthopedic, Inc. Intercostal spacer device and method for use in correcting a spinal deformity
US8641762B2 (en) 2006-10-24 2014-02-04 Warsaw Orthopedic, Inc. Systems and methods for in situ assembly of an interspinous process distraction implant
US8118839B2 (en) 2006-11-08 2012-02-21 Kyphon Sarl Interspinous implant
US7879104B2 (en) 2006-11-15 2011-02-01 Warsaw Orthopedic, Inc. Spinal implant system
US7955392B2 (en) 2006-12-14 2011-06-07 Warsaw Orthopedic, Inc. Interspinous process devices and methods
US8105358B2 (en) 2008-02-04 2012-01-31 Kyphon Sarl Medical implants and methods
US8114136B2 (en) 2008-03-18 2012-02-14 Warsaw Orthopedic, Inc. Implants and methods for inter-spinous process dynamic stabilization of a spinal motion segment
US8317832B2 (en) 2008-03-18 2012-11-27 Warsaw Orthopedic, Inc. Implants and methods for inter-spinous process dynamic stabilization of spinal motion segment
US8114131B2 (en) 2008-11-05 2012-02-14 Kyphon Sarl Extension limiting devices and methods of use for the spine
US8372117B2 (en) 2009-06-05 2013-02-12 Kyphon Sarl Multi-level interspinous implants and methods of use
US8157842B2 (en) 2009-06-12 2012-04-17 Kyphon Sarl Interspinous implant and methods of use
US8771317B2 (en) 2009-10-28 2014-07-08 Warsaw Orthopedic, Inc. Interspinous process implant and method of implantation
US8114132B2 (en) 2010-01-13 2012-02-14 Kyphon Sarl Dynamic interspinous process device
US8317831B2 (en) 2010-01-13 2012-11-27 Kyphon Sarl Interspinous process spacer diagnostic balloon catheter and methods of use
US8147526B2 (en) 2010-02-26 2012-04-03 Kyphon Sarl Interspinous process spacer diagnostic parallel balloon catheter and methods of use
US8840617B2 (en) 2010-02-26 2014-09-23 Warsaw Orthopedic, Inc. Interspinous process spacer diagnostic parallel balloon catheter and methods of use
US8814908B2 (en) 2010-07-26 2014-08-26 Warsaw Orthopedic, Inc. Injectable flexible interspinous process device system
US8591548B2 (en) 2011-03-31 2013-11-26 Warsaw Orthopedic, Inc. Spinous process fusion plate assembly
US8591549B2 (en) 2011-04-08 2013-11-26 Warsaw Orthopedic, Inc. Variable durometer lumbar-sacral implant
US9980715B2 (en) 2014-02-05 2018-05-29 Trinity Orthopedics, Llc Anchor devices and methods of use

Also Published As

Publication number Publication date
CN100361634C (en) 2008-01-16
CN1802127A (en) 2006-07-12
CN2638760Y (en) 2004-09-08
AU2003264318A1 (en) 2005-02-15

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