CN202821562U - Bone cement injection device for percutaneous vertebroplasty - Google Patents
Bone cement injection device for percutaneous vertebroplasty Download PDFInfo
- Publication number
- CN202821562U CN202821562U CN 201220546495 CN201220546495U CN202821562U CN 202821562 U CN202821562 U CN 202821562U CN 201220546495 CN201220546495 CN 201220546495 CN 201220546495 U CN201220546495 U CN 201220546495U CN 202821562 U CN202821562 U CN 202821562U
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- Prior art keywords
- bone cement
- injection device
- sleeve pipe
- percutaneous vertebroplasty
- injection
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Abstract
The utility model discloses a bone cement injection device for percutaneous vertebroplasty. The bone cement injection device for percutaneous vertebroplasty comprises a drivepipe, a push rod, and a stylet. The drivepipe is provided with two paratactic tunnels. The two paratactic tunnels are respectively injected into a tunnel and a decompressive tunnel. Opening of injection tunnel and opening of the decompressive are respectively an independent open mouth at the upper surface of the drivepipe. The injection tunnel and the decompressive are communicated with each other at the bottom of the drivepipe. The injection tunnel and the decompressive are communicated with the port which is at the bottom of the drivepipe. The stylet after filling bone cement is injected and communicated with the front end of the port which is located at the bottom of the drivepipe from the injection tunnel. The push rod is placed in the injection tunnel. The bone cement injection device for percutaneous vertebroplasty can inject bone cement into the vertebral body. Meanwhile, the bone cement injection device for percutaneous vertebroplasty also can avoid hypertonus in the vertebral body by a self-designed reliever. Various operative complications can be avoided efficiently.
Description
Technical field
This utility model relates to the percutaneous vertebra former, specifically a kind of bone cement injection device that is applied in the percutaneous vertebroplasty.
Background technology
At present, employed bone cement injection device is single tube-in-tube structure in the orthopaedics percutaneous vertebroplasty, bone cement directly injects vertebra vertebral body inside through single channel, because the characteristic of bone cement, when injecting bone cement for preventing that bone cement from hardening, need keep certain speed, consequently, certainly will cause the vertebral body internal pressure to increase (inside of cortical bone and the complete vertebral body of soleplate is a confined space) when bone cement injects, thus the deficiency of issuable adverse consequences and existence have following some: 1. the vertebral body inner high voltage may cause the pain sense of discomfort of site of puncture in the operation in patients; 2. the vertebral body inner high voltage can cause bone cement to cause venous thrombosis along the backflow of vertebral body angular vein, even fatefulue pulmonary infarction occurs; 3. cause the vertebral body mechanical property to descend for there being tumor tissues to invade in the vertebral body, when needing the row vertebroplasty, the increasing of vertebral body internal pressure when bone cement injects also may cause tumor cell along Intrapyramidal venous return system to contiguous even sending out at a distance, increases the weight of conditions of patients.4. for the tumor tissues assaulter is arranged in the vertebral body, before minimal invasion injects bone cement in the vertebral body, if organizing Intrapyramidal neoplastic lesion as far as possible, design takes out, make up bone cement packing space in the vertebral body, it is more satisfied that then bone cement is filled meeting, also reduces tumor cell to the risk of closing on diffusion simultaneously.In present minimal invasion operation, the most frequently used way is directly to aspirate by sleeve pipe.And single sleeve arrangement of traditional design, the structure of its seal can cause negative pressure undue in the vertebral body in aspiration procedure, thereby is difficult to the smooth sucking-off of Intrapyramidal tumor tissues.
Publication number is 102397096A, the assist device of filling bone cement in a kind of percutaneous pyramid plastic operation was disclosed for the patent documentation of 2012.04.04 in open day, be used for filling bone cement at the percutaneous pyramid plastic operation, comprise the bone cement sprue bushing, bone cement injects push rod, pusher grip, the sleeve pipe handle, pusher grip is fixed in bone cement and injects on the push rod, the sleeve pipe handle is fixed on the bone cement sprue bushing, bone cement injects push rod can put into the bone cement sprue bushing, and can be movable back and forth, the screw thread that intercouples is arranged at sleeve pipe handle top and pusher grip bottom, can both are fixing together.The assist device of bone cement, inject push rod by bone cement, bone cement in the bone cement sprue bushing is injected in the vertebral body, when when injecting bone cement, needing larger pressure, assurance bone cement that still can be stable steadily injects vertebral body, easy to operate, avoided in the operating process patient being damaged.
By above open source literature, know that this technology does not tackle the problem at its root, the smoothness that just injects by the rigid raising of the device of transforming, thus from still do not solve in essence certainly will cause when bone cement injects the vertebral body internal pressure increase the problem of deficiency of issuable adverse consequences and existence.
In view of this, for the problems referred to above, propose a kind of reasonable in design and effectively improve the bone cement injection device in the percutaneous vertebroplasty of being applied to of above-mentioned disappearance.
Summary of the invention
The purpose of this utility model is to provide a kind of bone cement injection device that is applied in the percutaneous vertebroplasty, in the inner injection of vertebral body bone cement, decompressor by designed, designed, reach the purpose of avoiding the vertebral body internal pressure too high, thereby effectively avoid the generation of above-mentioned various postoperative complications.
In order to reach above-mentioned purpose, this utility model has adopted following technical scheme, and a kind of bone cement injection device that is applied in the percutaneous vertebroplasty comprises sleeve pipe, push rod, nook closing member, described inside pipe casing is vertically offered two passages arranged side by side, is respectively injection channel and relief passage; Described injection channel and relief passage are open opening independently separately in the sleeve pipe upper surface, then both are interconnected and connect simultaneously interface to casing shoe in the sleeve pipe lower end.
Import and be connected to the interface front end of casing shoe behind the described nook closing member dress bone cement in the injection channel, described push rod places the injection channel.
Described sleeve pipe is cylindrical structural, and described injection channel and relief passage also are cylindrical channel, and the diameter of injection channel is greater than the diameter of relief passage.
Be provided with handle on described sleeve pipe and the push rod.
Compared to prior art, the utlity model has following beneficial effect:
This utility model is in the inner injection of vertebral body bone cement, decompressor by designed, designed, reach the purpose of avoiding the vertebral body internal pressure too high, thereby effectively avoid the generation of above-mentioned various postoperative complications, such as local pain, bone cement venous thrombosis, pulmonary infarction and Tumor cell dissemination etc.And, dual pathways design by this device, in needs suctions vertebral body during tumor tissues, because secondary channels (being relief passage) keeps communicating with the external world, avoid causing excessive negative pressure in the vertebral body, thereby be conducive to aspirate out Intrapyramidal neoplastic lesion tissue by main channel (being the injection channel), so reduce Intrapyramidal tumor tissues in the bone cement injection process to closing on diffusion.
Description of drawings
Fig. 1 is the structural representation of this utility model embodiment;
Fig. 2 is the structural representation that the cross section of Fig. 1 middle sleeve amplifies.
Among the figure: 1, sleeve pipe; 2, injection channel; 3, relief passage; 4, sleeve pipe handle; 5, push rod; 6, push rod handle; 7, nook closing member.
The specific embodiment
Relevant detailed description of the present utility model and technology contents cooperate description of drawings as follows, yet accompanying drawing only provides the usefulness of reference with explanation, and this utility model is limited.
According to illustrated in figures 1 and 2, a kind of bone cement injection device that is applied in the percutaneous vertebroplasty comprises sleeve pipe 1, push rod 5, nook closing member 7, and two passages arranged side by side are vertically offered in described sleeve pipe 1 inside, are respectively injection channel 2 and relief passage 3; Described injection channel 2 and relief passage 3 are open opening independently separately in the sleeve pipe upper surface, then both are interconnected and connect simultaneously interface to casing shoe in the sleeve pipe lower end.Import and be connected to the interface front end of casing shoe behind the described nook closing member dress bone cement in the injection channel, described push rod places the injection channel.Described sleeve pipe is cylindrical structural, and described injection channel and relief passage also are cylindrical channel, and the diameter of injection channel is greater than the diameter of relief passage.Be provided with handle on described sleeve pipe and the push rod, be respectively sleeve pipe handle 4 and push rod handle 6.
The critical component of design is sleeve portion.Sleeve pipe still is cylindrical.Inside pipe casing is designed to channel structure, and inside pipe casing, dual pathways peripheral part are the reality structure, with seal and the intensity (Fig. 1) of keeping whole sleeve portion.The sleeve pipe tail end links to each other with interface respectively with the dual pathways opening of handle connection.
When injecting bone cement, the nook closing member that bone cement is housed imports in the injection channel, and the nook closing member head-end location is positioned at slightly the place ahead of sleeve pipe head end.Keep simultaneously relief passage unobstructed, communicate with the external world.Push the Intrapyramidal while at bone cement from nook closing member, owing to relief passage communicates with the external world all the time, thereby can guarantee to inject in the whole process of bone cement the vertebral body inner pressure constant.During pathological tissues, negative suction system is connected with the injection channel tail end, keeps simultaneously relief passage and communicates with the external world, goes out pathological tissues in the vertebral body by negative pressure-pumping in the suction vertebral body.
The above only is preferred embodiment of the present utility model, and non-in order to limit claim of the present utility model, other use the equivalence of patent spirit of the present utility model to change, and all should all belong to claim of the present utility model.
Claims (4)
1. a bone cement injection device that is applied in the percutaneous vertebroplasty comprises sleeve pipe, push rod, nook closing member, it is characterized in that, described inside pipe casing is vertically offered two passages arranged side by side, is respectively injection channel and relief passage; Described injection channel and relief passage are open opening independently separately in the sleeve pipe upper surface, then both are interconnected and connect simultaneously interface to casing shoe in the sleeve pipe lower end.
2. a kind of bone cement injection device that is applied in the percutaneous vertebroplasty according to claim 1, it is characterized in that, import and be connected to the interface front end of casing shoe behind the described nook closing member dress bone cement in the injection channel, described push rod places the injection channel.
3. a kind of bone cement injection device that is applied in the percutaneous vertebroplasty according to claim 1, it is characterized in that, described sleeve pipe is cylindrical structural, and described injection channel and relief passage also are cylindrical channel, and the diameter of injection channel is greater than the diameter of relief passage.
4. a kind of bone cement injection device that is applied in the percutaneous vertebroplasty according to claim 1 is characterized in that, is provided with handle on described sleeve pipe and the push rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220546495 CN202821562U (en) | 2012-10-24 | 2012-10-24 | Bone cement injection device for percutaneous vertebroplasty |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220546495 CN202821562U (en) | 2012-10-24 | 2012-10-24 | Bone cement injection device for percutaneous vertebroplasty |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202821562U true CN202821562U (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220546495 Expired - Fee Related CN202821562U (en) | 2012-10-24 | 2012-10-24 | Bone cement injection device for percutaneous vertebroplasty |
Country Status (1)
| Country | Link |
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| CN (1) | CN202821562U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102871713A (en) * | 2012-10-24 | 2013-01-16 | 李建民 | Bone cement injection device for percutaneous vertebroplasty |
-
2012
- 2012-10-24 CN CN 201220546495 patent/CN202821562U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102871713A (en) * | 2012-10-24 | 2013-01-16 | 李建民 | Bone cement injection device for percutaneous vertebroplasty |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20131024 |