A kind of flat balloon-systemTechnical field
The present invention relates to medical instruments field, more particularly to a kind of flat sacculus dress for vertebral body augmentation plastyPut.
Background technology
Vertebral body balloon expansion plasty is a Minimally invasive procedure operation, is drilled on the limbs of compression, by a spyThe air bag feeding centrum center of the about 15mm sizes of system, then fills physiological saline to air bag, and the air bag of expansion is gradually propped up and collapsedCentrum, until centrum profile returns to normal vertebral body, remove sacculus, then by cavity from the hole to centrum center inject boneCement.The strength and stability of centrum can be strengthened after bone cement solidification, will not be compressed this guarantees the centrum for restoring, and ridgeThe deformity of post is also just repaired.The bone cement used in vertebral body balloon expansion plasty is a kind of for filling and between implantGap or bone cavity and the biomaterial with self-solidifying characteristic, main component is polymethyl methacrylate, and cement reaction can be protectedDemonstrate,prove the instant stabilization of postoperative prosthese.
Existing sacculus strut after be shaped as ellipticity, the height that sacculus struts postcentrum upper and lower faces is higher than centrumOriginal height, it is impossible to ensure strut after centrum upper and lower faces return to the vertebral height before lesion.
The content of the invention
In view of the drawbacks described above of prior art, centrum profile is met it is an object of the invention to provide one kind, it is safeFlat balloon-system.
The purpose of the present invention is achieved through the following technical solutions：
A kind of flat balloon-system, including sacculus, protective case, conduit, check valve, probe and Y-connector；The conduitOne end is connected with the Y-connector, and the other end of the conduit is connected with the sacculus, and the probe connects through the Y typesIt is extend into the sacculus after connecing on device joint and the conduit, the sacculus is provided with radiographic marker；The YAnother joint on type connector connects the check valve, and the protective case, the sacculus support are also cased with outside the conduitIt is oblate shape after opening.
Further, the Breadth Maximum of the rear sacculus is strutted for B, and maximum height is C, the width of the sacculus, heightMeet formula B ＞ 2C.
Further, the operating method of the flat balloon-system：（1）The flat balloon-system is entered through service aisleInside lesion centrum；（2）Compression pump is connected with the luer lock portion of the flat balloon-system, the compression pump is rotatedHandle, pressurizes to the flat balloon-system；（3）The sacculus under pressure, struts into oblate shape, makes the lesion vertebraRecover original height in the body place of collapsing；（4）The handle of the compression pump is rotated backward, physiological saline in the sacculus is emptied, andVacuumize；（5）The sacculus after vacuumizing exits passage, injects Cement fixation.
Compared with the existing technology, the features of the present invention and progress are as follows：
1st, into oblate shape after the sacculus of flat balloon-system of the invention is strutted, the profile of centrum is met, it is ensured that the vertebra after struttingBody upper and lower faces return to the vertebral height before lesion.
2nd, flat balloon-system of the invention increased check valve, it is ensured that after sacculus is vacuumized, and can keep negative pressure, make sacculusPassage can more smoothly be exited.
Brief description of the drawings
Fig. 1：The structure chart of flat balloon-system；
Fig. 2：The top view of sacculus；
Fig. 3：The front view of sacculus；
Fig. 4：The profile of sacculus A-A in Fig. 2；
Fig. 5：Flat balloon-system is implanted into the structural representation of lesion centrum；
Fig. 6：The structural representation that compression pump is pressurizeed to flat balloon-system；
Fig. 7：The structural representation that compression pump to flat balloon-system pressurize under sacculus softened state；
Fig. 8：Top view under centrum inner balloon softened state；
Fig. 9：Structural representation when sacculus is vacuumized；
Figure 10：Sacculus after vacuumizing exits the structural representation of passage.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
As Figure 1-4, flat balloon-system of the present invention, including sacculus 1, protective case 2, conduit 3, check valve 4,Probe 5 and Y-connector 6；One end of conduit 3 is connected with Y-connector 6, and the other end of conduit 3 is connected with sacculus 1, probe5 through extending into sacculus 1 after the joint and conduit 3 on Y-connector 6, and sacculus 1 is provided with radiographic marker 7；Y typesAnother joint connection check valve 4 on connector 6, protective case 2 is also cased with outside conduit 3.Flat balloon-system of the inventionUpper increase check valve 4, it is ensured that after sacculus 1 is vacuumized, negative pressure can be kept, enable sacculus 1 more smoothly to exit passage.
As in Figure 2-4, it is oblate shape after sacculus 1 is strutted, meets the profile of centrum, can preferably recovers lesion centrum；Assuming that the Breadth Maximum for strutting rear sacculus 1 is B, maximum height is C, in order to ensure the security of pyramidal support, it is necessary to avoid ballCapsule struts postcentrum upper and lower faces higher than original height, by optimization design, width when sacculus, highly meets formula B ＞During 2C, can guarantee that the centrum upper and lower faces after strutting return to the vertebral height before lesion.
As shown in Figure 5-10, the operating procedure of flat balloon-system of the present invention is as follows：（1）By flat balloon-systemEnter inside lesion centrum E through service aisle；（2）Compression pump 8 is connected with the luer lock portion of flat balloon-system, is rotatedThe handle 9 of compression pump 8, gives the pressurization of flat balloon-system；（3）Sacculus 1 under pressure, struts into oblate shape, makes lesion vertebraRecover original height in the body E places of collapsing；（4）The handle 9 of compression pump 8 is rotated backward, physiological saline in sacculus 1 is emptied, and take out trueIt is empty；（5）Sacculus 1 after vacuumizing exits passage, injects Cement fixation.
But, those of ordinary skill in the art is it should be appreciated that the embodiment of the above is intended merely to explanation originallyInvention, and be not used as being limitation of the invention, as long as in spirit of the invention, to embodiment described aboveChange, modification will all fall in the range of claims of the present invention.