CN111214286B

CN111214286B - Bone filler releasing device

Info

Publication number: CN111214286B
Application number: CN202010329561.1A
Authority: CN
Inventors: 王筱凡; 郭忠祎; 许婷婷; 宋月华; 杨丽; 张荔
Original assignee: Shanghai Kinetic Medical Co Ltd
Current assignee: Shanghai Kinetic Medical Co Ltd
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2020-08-25
Anticipated expiration: 2040-04-24
Also published as: CN111214286A

Abstract

The invention discloses a bone filler releasing device, comprising: the capsule body with the filling opening comprises a plurality of blades, the blades are connected with each other, and different blades are configured to be disconnected with adjacent blades under the action of preset external force with different sizes. The bone filler releasing device has the beneficial effects that the vertebral body height recovery effect can be improved, and the bone filler leakage can be effectively avoided.

Description

Bone filler releasing device

Technical Field

The invention relates to the technical field of medical instruments, in particular to a bone filler releasing device.

Background

At present, the methods generally applied to osteoporotic vertebral compression fracture include percutaneous vertebroplasty and percutaneous kyphoplasty, wherein the percutaneous vertebroplasty is widely applied. Percutaneous vertebroplasty provides sufficient support between the trabeculae in the vertebral body by establishing a passage and delivering bone cement into the vertebral body, thereby ensuring that the diseased vertebra is not subjected to compression fracture and pain. Meanwhile, in order to reduce the risk of bone cement leakage, the balloon is generally adopted to be expanded to form a cavity and then to be filled with bone cement, so that the effect of low-pressure filling of the bone cement is achieved, the bone cement leakage rate is finally reduced, or the bone cement bag is filled with the bone cement, so that the limitation of bone cement conveying in the vertebral body is realized, and the leakage rate of the bone cement is reduced. However, after the balloon is decompressed and taken out, the recovered vertebral body height is maintained without pressure support in the vertebral body by the balloon inflation mode, the recovered vertebral body height is partially lost due to the reduction of pressure, and the expansion function effect of the balloon is reduced. And through the use of bone cement bag, have the bone cement bag that the aperture is little again and can cause bone cement difficult to disperse, the bone cement bag that the aperture is big can cause the not enough defect of dynamics of strutting. In addition, during the process of expanding the vertebral body by using the balloon, the pressure of the balloon is different when the balloon expands in the vertebral body with the same volume due to different degrees of osteoporosis. And at the in-process of sacculus expansion, the density of spongy bone also can change in the centrum, and the pressure in the sacculus can rise by a wide margin this moment, has the risk of strutting the centrum outer wall, if the centrum perisporium has had the fracture, then the centrum further cracked risk can grow in sacculus inflation process, and the seepage risk of bone cement can greatly increased at the in-process that injects bone cement this moment, still exists the risk of bone cement seepage.

Disclosure of Invention

The invention aims to provide a bone filler releasing device which can improve the vertebral body height recovery effect and effectively avoid bone filler leakage.

In order to achieve the purpose, the invention adopts the following technical scheme:

a bone filler release device comprising: the capsule body with the injection port comprises a plurality of blades, the blades are connected with each other, and different blades are configured to be disconnected with adjacent blades under the action of preset external force with different sizes.

In one embodiment, a plurality of the leaflets are each connected by a suture, and the sutures disposed between different leaflets differ in tensile strength.

In one embodiment, the suture is a metal wire, the two end portions of the metal wire are overlapped, and the length of the overlapped portion of the two end portions of the metal wire disposed between different blades is different.

In one embodiment, a snap ring is arranged at the overlapped part of the two end parts of the metal wire; and/or the tail ends of the two end parts of the metal wire are provided with bulges.

In one embodiment, a plurality of the blades are connected in an adhesive mode, and the adhesive strength of different blades is different.

In one embodiment, the blades comprise blade bodies and connecting strips which are mutually connected, adjacent blade bodies are connected through the connecting strips in a weaving mode, and the weaving connection strength of the connecting strips is different between different blades.

In one embodiment, the bone filler releasing device further comprises a plurality of pulling wires, one end of each pulling wire is connected with the corresponding blade inside the balloon, and the other end of each pulling wire extends to the outside of the balloon.

In one embodiment, the bone filler release device further comprises an elastic member partially disposed within the balloon and partially extending outside the balloon.

In one embodiment, the elastic member is an elastic needle core, and the elastic needle core is made of memory metal or elastic high polymer material.

In one embodiment, the elastic member is made by a pre-bending process.

In one embodiment, the elastic member includes an elastic metal sheet disposed on the capsule and a pulling section connected to the elastic metal sheet.

In one embodiment, a part of the blades are made of elastic material, and a part of the blades are made of non-elastic material.

In one embodiment, the balloon is provided with positioning lines, and the positioning lines are connected with the corresponding vanes.

In one embodiment, the bone filler releasing device further comprises a connecting rod, wherein an injection hole is formed in the connecting rod, one end of the connecting rod is connected with the bag body, and the injection hole is communicated with the injection hole.

In one embodiment, the bone filler releasing device further comprises an injection seat connected to the other end of the connecting rod.

In one embodiment, the bone filler releasing device further comprises a support guide wire and a guide wire cap, wherein the guide wire cap is detachably connected with the injection seat, one end of the support guide wire is arranged inside the capsule body, and the other end of the support guide wire is connected with the guide wire cap.

Foretell bone filler release's utricule comprises a plurality of blades interconnect, and the inside airtight space that forms of utricule, and different blades can be under the external force effect of predetermineeing of equidimension not disconnection between with adjacent blade. When the bone filler releasing device is used for injecting bone fillers (such as bone cement) into a vertebral body, the capsule can be gradually expanded along with the injection of the bone cement at the initial injection stage due to the fact that the capsule is a closed space, so that the effects of expanding the vertebral body and recovering the height of the vertebral body can be achieved. Bone cement is continuously injected, the internal pressure rises when the capsule is continuously expanded, the centrum height can be recovered and maintained to the maximum extent, after the centrum height is recovered, each blade can be separated step by step under the action of pressure or external force with different sizes, the bone cement is released outside the capsule at the separated blade gaps, the released bone cement is dispersed in the centrum and is mutually permeated and fused with surrounding bone trabeculae to reinforce the centrum, and the recovered centrum height can not be changed. And, after the centrum height recovered, each blade separated step by step, the pressure in the capsule body can not take place to rise by a wide margin, can effectively protect the centrum, avoids the centrum to take place to break, simultaneously, to centrum fracture person, at the in-process of bone cement release, the not blade of separating can block bone cement at the department of breaking and to the outside seepage of centrum. Therefore, the bone filler releasing device has the advantages of improving the vertebral body height recovery effect and effectively avoiding the leakage of the bone filler.

Drawings

Fig. 1 is a schematic structural diagram of a capsule according to the first embodiment;

fig. 2 is a schematic structural diagram of a capsule of the second embodiment;

fig. 3 is a schematic structural view of a capsule of the third embodiment;

fig. 4 is a schematic structural view of a capsule of the fourth embodiment;

fig. 5 is a schematic structural view of a capsule of the fifth embodiment;

fig. 6 is a schematic structural view of a capsule of the sixth embodiment;

FIGS. 7 to 10 are schematic structural views of different suture methods;

FIGS. 11 to 12 are schematic structural views of different suture knotting methods;

FIGS. 13 to 16 are schematic views illustrating different fixing manners of the metal wires;

FIG. 17 is a schematic view of a blade according to one embodiment;

FIG. 18 is a schematic view of the weave structure between the leaves shown in FIG. 17;

FIG. 19 is a schematic view of a bonding structure between blades in one embodiment;

FIG. 20 is a schematic illustration of the structure of a bone filler release device in one embodiment;

fig. 21 is a structural sectional view of a capsule of the seventh embodiment;

fig. 22 is a structural sectional view of a capsule of the eighth embodiment;

fig. 23 is a schematic structural view of a bone filler releasing device in another embodiment.

Description of reference numerals:

10-capsule body, 11-leaf, 12-suture, 13-snap ring, 14-limit bump, 15-adhesive, 20-connecting rod, 30-pull wire, 40-elastic piece, 50-positioning wire, 60-injection seat and 80-guide cap;

111-blade body, 112-connecting strip.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Referring to fig. 1, the bone filler releasing device of the first embodiment includes a capsule 10 having an injection port. The capsule 10 comprises a plurality of blades 11, the plurality of blades 11 are connected with each other, and different blades 11 are configured to be disconnected with adjacent blades 11 under the action of preset external forces of different magnitudes.

Specifically, as shown in fig. 1, the plurality of blades 11 are arranged longitudinally in the present embodiment, but in other embodiments, the plurality of blades 11 may be arranged transversely (as shown in fig. 2) or obliquely (as shown in fig. 3). Further, as shown in fig. 1, 4 and 5, the plurality of blades 11 may have the same size and shape or different shapes, and even for a fractured vertebral body, the area of the blade 11 corresponding to the fractured position of the vertebral body may be increased, so that the blade 11 can fully block the bone cement after separation, and the bone cement is prevented from leaking to the outside of the vertebral body. Further, the plurality of blades 11 may be made of the same material or different materials. In practical application, according to the actual condition of vertebral body compression, the balloon 10 may be any shape such as spherical, cylindrical (as shown in fig. 6), cubic, kidney-shaped, etc. after being filled, the bone filler releasing device may select the number, size, shape, arrangement, material, etc. of the appropriate blades 11 according to the shape of the balloon 10 to be presented, so that the balloon 10 can present the shape required for vertebral body restoration, and can meet the filling requirements of different shapes and specifications, and has a wide application range.

The capsule 10 of the bone filler releasing device is formed by connecting a plurality of blades 11, a closed space is formed inside the capsule 10, and different blades 11 can be disconnected with adjacent blades 11 under the action of preset external forces of different sizes. When the bone filler releasing device is used for injecting bone fillers (such as bone cement) into a vertebral body, the capsule body 10 can be gradually expanded along with the injection of the bone cement at the initial injection stage because the capsule body 10 is a closed space, so that the effects of expanding the vertebral body and recovering the height of the vertebral body can be achieved. And continuously injecting bone cement, wherein the internal pressure rises when the capsule body 10 is continuously expanded, the height of the vertebral body can be recovered and maintained to the maximum extent, after the height of the vertebral body is recovered, each blade 11 can be separated step by step under the action of pressure or external force, the bone cement is released outside the capsule body 10 at the gap of the separated blades 11, the released bone cement is dispersed in the vertebral body and mutually permeates and fuses with surrounding bone trabeculae to reinforce the vertebral body, and the height of the recovered vertebral body can not be changed. And, after the centrum height recovered, each blade 11 separated step by step, the pressure in the utricule 10 can not take place to rise by a wide margin, can effectively protect the centrum outer wall, avoids the centrum to take place to break, simultaneously, to the centrum person that breaks, at the in-process that bone cement released, the blade 11 of separation can block bone cement at the department of breaking and to the outside seepage of centrum.

In one embodiment, the preset external force is a preset pressure, the preset pressure is 1psi-1000psi, the preset pressures applied to different blades 11 during disconnection are different, the preset pressure required when the blade 11 needing to be separated first is disconnected is small, the preset pressure required when the blade 11 needing to be separated later is disconnected is large, the preset pressure required when each blade 11 needs to be disconnected is specifically set according to actual needs, and the embodiment is not specifically limited.

In one embodiment, a plurality of leaflets 11 are each connected by a suture 12, and the sutures 12 disposed between different leaflets 11 have different tensile strengths. Specifically, the sewing manner of the stitches 12 may be a pure intermittent sewing manner, that is, each connection point has a single stitch 12 connected as a single connection unit, and when one connection unit is separated, other connection units are not affected (as shown in fig. 7). The suture 12 may be continuous, that is, there is mutual connection between the connection points, when the suture at one connection point is broken, the connection points adjacent to the connection point before and after the connection point may be loosened or separated, and then the next connection point is further affected, the continuous suture may be in a manner that 2 connection points are one connection unit, 3 connection points are one connection unit, or a plurality of connection points are one connection unit, and the like, and each connection unit may be separated from the connection unit (as shown in fig. 8 and 9), or may be engaged with each other (as shown in fig. 10). Further, the knotting of the suture 12 at the connecting points may be a "dead knot" that does not loosen (as shown in fig. 11), or a "slip knot" that loosens (as shown in fig. 12), and the suture may be smooth, rough in surface, or barbed. The suture 12 has a tensile strength, when the pressure in the capsule 10 reaches the limit of the pressure applied to the suture 12, the suture 12 at the connection point is deformed or broken by stretching, so that the closed space of the capsule 10 is communicated with the outside at the connection point where the suture 12 is stretched or broken, and the filler (such as bone cement) in the capsule 10 is released to the outside of the capsule 10. The tension strength of the suture 12 provided between different leaflets 11 varies, and the amount of pressure required to stretch or break different sutures 12 varies. Specifically, the tension strength of the suture 12 is related to the material of the suture 12, the distance between the connection point and the connection point on the suture 12, the knotting mode of the suture 12 and the roughness of the surface of the suture 12, and the magnitude of the pressure required for separating the leaflets 11 at different parts of the balloon 10 can be changed by changing the material of the suture 12, the distance between the connection point and the connection point on the suture 12, the knotting mode of the suture 12 and the roughness of the surface of the suture 12. For example, increasing the roughness of the suture 12, decreasing the distance between the points of attachment, attachment by "dead knots," or selecting a suture 12 with a high tensile strength may increase the tensile strength of the suture 12, and thus the pressure required to separate the leaflets 11. If less pressure is required to separate the leaflets 11, requiring less tension strength in the suture 12, the roughness of the suture 12 is reduced, the distance between the attachment points is increased, the attachment is by "slip knot" or a suture 12 of less tension strength is selected. Further, the above factors required for the separation of the blades 11 all change the magnitude of the pressure required for the separation by different arrangement and combination.

In one embodiment, the stitching 12 is a metal wire, the two ends of which are partially overlapped, the length of the overlapped portions of the two ends of the metal wire provided between different leaflets 11 being different. Specifically, as shown in fig. 13, the blade 11 is connected and fixed by winding a metal wire to form a metal ring, and the pressure required for separating the blade 11 can be adjusted by changing the pressure required when the metal ring is expanded and deformed by the material of different metals, the thickness of the metal ring, the length of the overlapped part of the metal ring and the distance between the metal rings. Further, in one embodiment, the metal wire is provided with a snap ring 13 at the overlapped position of the two ends (as shown in fig. 14), the amount of pressure required in the balloon 10 when the metal ring is deformed can be changed by adding the snap ring 13 on the metal ring, that is, the different pressure ranges required for the metal wire to be broken can be changed by the difference of the number and tightness of the snap rings 13. In another embodiment, the ends of the two ends of the wire are provided with the limiting protrusions 14, and whether the wire is completely separated at the connecting point and the size of the separation port can be adjusted through the blocking effect between the limiting protrusions 14 at the two ends, so that different pressure ranges required by the disconnection of the wire can be changed. Further, in one embodiment, the overlapping portion of the two ends of the wire is provided with the snap ring 13, and the ends of the two ends of the wire are provided with the position-limiting protrusions 14 (as shown in fig. 15), so that whether the wire is completely separated at the connection point and the size of the separation opening can be adjusted by the blocking action of the position-limiting protrusions 14 and the snap ring 13, and thus, different pressure ranges required for the disconnection of the wire can be changed. Of course, in other embodiments, the above technical effects can also be achieved by providing the limiting protrusions 14 at the overlapping positions of the two end portions of the metal wire and providing the snap rings 13 at the tail ends of the two end portions of the metal wire. As shown in fig. 16, the ends of the wires may be connected to each other by means of a snap, and the amount of pressure required in the capsule 10 when the wires are separated at the connection point can be adjusted by different materials and the thickness and roughness of the connection portion and the depth of the snap when the snap is inserted into each other. In other embodiments, the different leaflets 11 may be connected by continuous sewing with the above-mentioned stitches 12 using a wire, and the amount of pressure required in the balloon 10 for separation between the leaflets 11 may be changed by changing the material, thickness and distance between the connecting points, and by simple continuous sewing or embedded continuous sewing.

In one embodiment, as shown in fig. 17 and 18, the blades 11 include blade bodies 111 and connecting strips 112 connected to each other, adjacent blade bodies 111 are connected by weaving through the connecting strips 112, and the weaving connection strength of the connecting strips 112 between different blades 11 is different. Specifically, the connecting strips 112 may be made of the same material as the blade body 111, or may be different from the blade body, and different blades 11 may be elongated or separated from each other within a range of different distraction pressures by using a weaving interval gap or a different interval distance between different connecting strips 112, and the magnitude of the pressure required for separating the blades 11 may be changed by changing the roughness of the surface of the connecting strip 112 or adding a limiting structure at the tail or in the middle of the connecting strip 112.

In one embodiment, the plurality of blades 11 are connected by bonding, and the adhesive strength is different between different blades 11. Specifically, as shown in fig. 19, adjacent blades 11 are bonded and connected by the adhesive 15, and in the present embodiment, different pressures required for separating different blades 11 are set by adjusting the bonding length or area of the adhesive 15, the thickness of the adhesive 15, and the properties of the adhesive 15.

In an embodiment, the preset external force is a preset pulling force, the preset pulling forces applied to different blades 11 during disconnection are different in magnitude, the preset pulling force required when the blade 11 needing to be separated first is disconnected is small, the preset pulling force required when the blade 11 needing to be separated later is disconnected is large, the preset pulling force required by disconnection of each blade 11 is specifically set according to actual needs, and this embodiment is not limited specifically.

Specifically, as shown in fig. 20, in one embodiment, the bone filler releasing device further includes one or more pulling wires 30, one end of the pulling wire 30 is connected with the corresponding leaflet 11, and the other end extends to the outside of the balloon 10. In the above embodiment, the blades 11 on the balloon 10 are separated under the internal pressure of the balloon 10, in this embodiment, the preset external force is the preset pulling force, the blades 11 can be separated under the external pulling force, specifically, the pulling lines 30 can be controlled manually to control the separation time of different blades 11, when a certain blade 11 needs to be controlled to be separated, the corresponding pulling lines 30 are pulled, so as to identify the blades 11 controlled by different pulling lines, and the pulling lines 30 can be set to have different colors or different arrangement directions. The separation of the whole connecting edge of the blade 11 can be controlled by pulling the pull wire 30, and the separation of one or more connecting points can also be controlled. The pulling control of the pulling wire 30 can be controlled manually or by an external electric pulling device, and the pulling control mode of the pulling wire 30 is not particularly limited.

In one embodiment, as shown in fig. 21, the bone filler releasing device further comprises an elastic member 40, and the elastic member 40 is partially disposed inside the balloon 10 and partially extends to the outside of the balloon 10. Specifically, the elastic member 40 can be bent to deform to drive the balloon 10 to deform, so that the balloon 10 can be transformed into different shapes to control the dispersion direction of the bone filler in the balloon 10 to the vertebral body. In this embodiment, the elastic member 40 is made of an elastic core needle, specifically, the elastic core needle is made of a memory metal, and the elastic core needle is gradually bent in the vertebral body along with the change of the ambient temperature, thereby achieving the bending of the balloon 10. In other embodiments, the elastic needle core can also be made of other elastic materials, such as elastic polymer materials, specifically, conventional medical polymer materials such as polylactic acid, nylon, polycaprolactone, and the like.

The bending direction can be adjusted by pulling or rotating the part of the elastic stylet extending out of the capsule body 10, the elastic stylet can be taken out from the capsule body 10 by operating the part of the elastic stylet extending out of the capsule body 10, and the elastic stylet taking and placing operation is simple and convenient.

In one embodiment, the curved shape of the resilient member 40 may be achieved by a pre-bending process, which may exhibit different elastic deformations by varying the depth of exit from the channel. Further, the elastic member 40 may also have a spiral or serpentine bone structure.

In another embodiment, the elastic member comprises an elastic metal sheet provided on the capsule 10 and a pulling section connected to the elastic metal sheet. Specifically, the elastic metal sheet may be disposed inside the capsule 10, or may be tightly attached to the outside of the capsule 10, the pulling section is disposed outside the capsule 10, the elastic metal sheet may be bent by pushing and pulling the pulling section, so as to bend the capsule 10, the specific pulling section may be made of the same material as the elastic metal sheet, or may be made of different materials, and this embodiment is not limited specifically.

In one embodiment, some of the blades 11 are made of an elastic material, and some of the blades 11 are made of a non-elastic material. Specifically, the blades 11 made of elastic materials can be expanded and deformed in the expansion and expansion process of the capsule 10, and can be expanded along with the continuous expansion of the capsule, the blades 11 made of non-elastic materials cannot be expanded and deformed in the expansion and expansion process of the capsule 10, and the length of the blades 11 cannot be changed, so that the capsule 10 can be bent and deformed, and the direction of the bone filler dispersed in the capsule 10 to the vertebral body can be regulated.

In one embodiment, as shown in fig. 22, the balloon 10 is provided with positioning wires 50, the positioning wires 50 are connected with the corresponding leaflets 11, specifically, the positioning wires 50 are made of an inelastic material, and the positioning wires 50 do not extend and deform during the expansion and distraction of the balloon 10, so that the leaflets 11 connected to both ends of the positioning wires 50 can be fixed, both sides of the balloon 10 can be bent in the same direction, and the direction of the bone filler dispersed in the balloon 10 to the vertebral body can be adjusted.

As shown in fig. 23, in another embodiment, the bone filler releasing device further includes a connecting rod 20, wherein an injection hole is opened on the connecting rod 20, one end of the connecting rod 20 is connected to the capsule 10, and the injection hole is communicated with the injection hole on the capsule 10. Further, in one embodiment, the bone filler releasing means further comprises an injection seat 60, and the injection seat 60 is coupled to the other end of the connecting rod 20. When bone filler (e.g., bone cement) is injected into the vertebral body, the bone cement is injected into the connection rod 20 through the injection seat 60, and the bone cement is injected into the balloon 10 through the connection rod 20. Further, the pulling wire, the elastic member, the pulling section, etc. involved in the above embodiments further extend to the outside of the injection seat 60 through the injection hole of the connecting rod 20.

Further, in one embodiment, the bone filler releasing device further comprises a guide wire cap 80 and a support guide wire (not shown) disposed inside the guide wire cap 80, wherein the guide wire cap 80 is detachably connected to the injection seat 60, specifically, the guide wire cap 80 and the injection seat 60 can be, but not limited to, screwed, one end of the support guide wire is disposed inside the balloon 10, and the other end of the support guide wire is connected to the guide wire cap 80 after sequentially passing through the injection hole and the injection seat 60. In particular, in one embodiment, the portion of the support wire within the balloon 10 may be provided as a resiliently curved segment to effect a bending deformation of the balloon 10.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A bone filler release device, comprising: a capsule (10) having an injection port, wherein the capsule (10) comprises a plurality of vanes (11), the vanes (11) are connected with each other, and different vanes (11) are configured to be disconnected with adjacent vanes (11) under the action of preset external forces with different magnitudes; the plurality of blades (11) are connected through stitches (12), and the stitches (12) arranged between different blades (11) have different tensile strengths, wherein the stitches (12) are metal wires, the metal wires are wound to form metal rings so that two end parts of the metal wires are overlapped, and the lengths of the overlapped parts of the two end parts of the metal wires arranged between different blades (11) are different.

2. The bone filler releasing device according to claim 1, wherein a snap ring (13) is provided at the overlapping portion of the both end portions of the wire; and/or the tail ends of the two end parts of the metal wire are provided with bulges (14).

3. Bone filler release device according to claim 1, characterized in that a plurality of said leaflets (11) are adhesively connected, the adhesive strength being different between different said leaflets (11).

4. Bone filler release device according to claim 1, characterized in that the blades (11) comprise interconnected blade bodies (111) and connecting strips (112), adjacent blade bodies (111) are connected by the connecting strips (112) in a woven manner, and the woven connection strength of the connecting strips (112) is different between different blades (11).

5. The bone filler release device according to claim 1, further comprising a plurality of pulling wires (30), one end of the plurality of pulling wires (30) being connected with the corresponding blades (11) inside the balloon (10), and the other end thereof extending to the outside of the balloon (10).

6. The bone filler release device according to claim 1, further comprising an elastic member (40), wherein the elastic member (40) is partially disposed within the balloon (10) and partially extends outside the balloon (10).

7. The bone filler release device according to claim 6, wherein the elastic member (40) is an elastic needle core made of memory metal or elastic polymer material.

8. The bone filler release device of claim 6, wherein the elastic member is made by a pre-bending process.

9. Bone filler release device according to claim 6, characterized in that the elastic element (40) comprises an elastic metal sheet arranged on the capsule (10) and a pulling section connected to the elastic metal sheet.

10. Bone filler release device according to claim 1, characterized in that part of the blades (11) is made of an elastic material and part of the blades (11) is made of a non-elastic material.

11. Bone filler release device according to claim 1, wherein positioning wires (50) are provided on the balloon (10), said positioning wires (50) being connected with the corresponding blades (11).

12. The bone filler releasing device according to any one of claims 1 to 11, further comprising a connecting rod (20), wherein an injection hole is opened on the connecting rod (20), one end of the connecting rod (20) is connected with the balloon (10), and the injection hole is communicated with the injection hole.

13. The bone filler releasing device according to claim 12, further comprising an injection seat (60), the injection seat (60) being connected to the other end of the connecting rod (20).

14. The bone filler release device according to claim 13, further comprising a support wire and a wire cap (80), wherein the wire cap (80) is detachably connected to the injection seat (60), one end of the support wire is disposed inside the balloon (10), and the other end of the support wire is connected to the wire cap (80).