CN202505402U - Device for treating compression fracture of vertebral body - Google Patents
Device for treating compression fracture of vertebral body Download PDFInfo
- Publication number
- CN202505402U CN202505402U CN 201220121341 CN201220121341U CN202505402U CN 202505402 U CN202505402 U CN 202505402U CN 201220121341 CN201220121341 CN 201220121341 CN 201220121341 U CN201220121341 U CN 201220121341U CN 202505402 U CN202505402 U CN 202505402U
- Authority
- CN
- China
- Prior art keywords
- cavity
- compression fracture
- cavity body
- bone cement
- far
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical 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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7097—Stabilisers comprising fluid filler in an implant, e.g. balloon; devices for inserting or filling such implants
- A61B17/7098—Stabilisers comprising fluid filler in an implant, e.g. balloon; devices for inserting or filling such implants wherein the implant is permeable or has openings, e.g. fenestrated screw
Abstract
The utility model discloses a device for treating compression fracture of a vertebral body. The device comprises an expansion device. The device is characterized in that the device comprises a flexible cavity body, wherein the cavity body comprises a near end and a far end, wherein the near end is used for connecting an opening of the expansion device; the far end of the cavity is sealed or opened; a hole-shaped structure is arranged on the cavity body. The device has the advantages that the cavity body is a flexible cavity body; the cavity body reaches an expansion state by using the expansion device after being conveyed to a destination by a conveyor; and according to the hole-shaped structure arranged on the cavity body, a part of bone cement flows out from the hole-shaped structure when the bone cement is injected into the cavity body so as to form alternated connection of bone tissues; and therefore, the bone cement is prevented from leaking, and the binding of the bone cement and the bone tissue is firm.
Description
Technical field
This utility model relates to a kind of device that is used to treat collapse of vertebra and compression fracture, is particularly useful for the device of minimally-invasive treatment collapse of vertebra and compression fracture.
Background technology
Compression fracture of vertabral body (VCF) is a kind of common spinal injury and can causes long term disability, and in general, compression fracture of vertabral body (VCF) relates to subsiding of one or more vertebral bodys in the spinal column.Compression fracture of vertabral body (VCF) usually occurs in the bottom vertebral body of thoracic vertebra or the top vertebral body of lumbar vertebra.Compression fracture of vertabral body (VCF) is usually directed to the fracture of the front part generation of influenced vertebral body.Compression fracture of vertabral body (VCF) can cause normal sequence and the curvature of the vertebral body in the involved area of spinal column, and for example lordosis produces distortion.Compression fracture of vertabral body (VCF) and/or relevant deformity of spine for example be since the metastatic disease of spinal column, wound etc. cause or relevant with osteoporosis.Up at present, the doctor still is subject to many limitations aspect lopsided with relevant taking which kind of mode to treat compression fracture of vertabral body (VCF).
The treatment compression fracture of vertabral body; General vertebroplasty (PVP) or the kyphoplasty art (PKP) of adopting; According to statistics; Adopting vertebral plasty to treat in whole clinical complications, there are 66% vertebroplasty (PVP) or 73% kyphoplasty art (PKP) all relevant with the seepage of bone cement.Chemical constituent and the curing reaction of different bone cements are all different, inject that body might cause allergic reaction after interior, monomer toxicity, local foreign body reaction etc.; The bone cement granule has the especially worry of pulmonary infarction of the histoorgan of causing if get into blood circulation; Bone cement will successfully inject in the vertebral body; Need certain injection pressure and flowability (viscosity); This has just determined that bone cement can be through reflux veins clump, fracture crack or the bone defect seepage outside vertebral body of vertebral body, and generation is pushed or burnt to surrounding tissue.Most bone cement seepages can not cause tangible clinical symptoms, but can lead to disastrous consequence under the few cases---nerve root or spinal cord injury.This also is to influence the most important reason that PVP and PKP operation is extensively carried out, so the clinician pays close attention to the most.
Like 200920073797.2 1 kinds of expanding saccule by high pressure structures of patent, invented a kind of balloon structure, but can't prevent the seepage of bone cement.
Summary of the invention
The purpose of this utility model is to overcome the defective that exists in the prior art, and a kind of device that is used to treat compression fracture of vertabral body that effectively prevents the bone cement seepage is provided.
This utility model is achieved in that a kind of device that is used to treat compression fracture of vertabral body; Comprise expansion gear; It is characterized in that: comprise a flexible cavity, said cavity comprises near-end and far-end, and said near-end is the opening that is used to connect expansion gear; The far-end sealing or the opening of said cavity, said cavity is provided with cavernous structure.
Be provided with the elastic support that is used to strut cavity in the said cavity.
Said cavity is the flexible cavity of degradation-type.
The side projection shape of said cavity is trapezoidal or the trapezoidal or Pear-Shaped of round rectangle or rectangle or fillet.
Said elastic support is the reticulated elastomeric support.
The near-end of said cavity or far-end are provided with the development point.
The beneficial effect of this utility model is: cavity is flexible cavity; Utilize expansion gear that cavity is reached swelling state after cavity sent to target by carrier; The cavernous structure that cavity is provided with has the part bone cement to flow out from cavernous structure when making bone cement inject cavity; Alternately be connected with osseous tissue thereby form, when preventing the bone cement leakage, combine again firmly.
Description of drawings
Fig. 1 is the structural representation of this utility model cavity.
Fig. 2 is this utility model cavity and elastic support structure combining sketch map.
Fig. 3 is the structural representation of this utility model cavity embodiment one.
Fig. 4 is the structural representation of this utility model cavity embodiment two.
Syndeton sketch map when expansion gear was withdrawn from from cavity when Fig. 5 was this utility model use.
In: 1, cavity; 2, near-end; 3, far-end; 4, expansion gear; 5, cavernous structure; 6, elastic support; 7, development point.
The specific embodiment
According to Fig. 1, Fig. 2, Fig. 5, this utility model comprises a flexible cavity 1, and said cavity 1 comprises near-end 2 and far-end 3, and said near-end 2 is for being used to connect the opening of expansion gear 4, and the far-end of said cavity 1 seals or opening, and said cavity 1 is provided with cavernous structure 5.Be provided with the elastic support 6 that is used to strut cavity 1 in the said cavity 1, said elastic support 6 is the reticulated elastomeric support.Said expansion gear 4 is sacculus or bone filler.Said cavity 1 is the flexible cavity of degradation-type, and the side projection shape of said cavity 1 is trapezoidal or the trapezoidal or Pear-Shaped of round rectangle or rectangle or fillet.The near-end 2 of said cavity 1 or far-end 3 are provided with the point 7 that develops.
Embodiment one: like Fig. 3, said cavity 1 is the container-like of hollow, and it is trapezoidal that the side projection shape of cavity 1 main body is the big fillet of the little far-end of near-end 23, far-end 3 sealings, all the other structures such as above-mentioned.
Embodiment two: like Fig. 4, said cavity 1 is the container-like of hollow, and the side projection shape of cavity 1 is Pear-Shaped, all the other structures such as above-mentioned.
The cavity 1 of this utility model is compressive state before the implant into body targeted vertebral body, and diameter is 2-6mm, preferred dual mode during use; A kind of mode is: the near-end 2 of cavity 1 is linked to each other with expansion gear 4; Through carrier cavity 1 is sent in the human body target vertebral body, cavity 1 is strutted, after cavity 1 struts through expansion gear 4; Then expansion gear 4 is in flat state and non-expansion state; And withdraw from, keep strutting shape at the effect lower chamber of elastic support 61, in cavity 1, inject bone cement then; Another kind of mode is: cavity 1 is directly sent in the human body target vertebral body through carrier, injected bone cement then and get final product.
Claims (6)
1. device that is used to treat compression fracture of vertabral body; Comprise expansion gear; It is characterized in that: comprise a flexible cavity, said cavity comprises near-end and far-end, and said near-end is the opening that is used to connect expansion gear; The far-end sealing or the opening of said cavity, said cavity is provided with cavernous structure.
2. according to the described a kind of device that is used to treat compression fracture of vertabral body of claim 1, it is characterized in that: be provided with the elastic support that is used to strut cavity in the said cavity.
3. according to the described a kind of device that is used to treat compression fracture of vertabral body of claim 1, it is characterized in that: said cavity is the flexible cavity of degradation-type.
4. according to claim 1 or 2 or 3 described a kind of devices that are used to treat compression fracture of vertabral body, it is characterized in that: the side projection shape of said cavity is trapezoidal or the trapezoidal or Pear-Shaped of round rectangle or rectangle or fillet.
5. according to the described a kind of device that is used to treat compression fracture of vertabral body of claim 2, it is characterized in that: said elastic support is the reticulated elastomeric support.
6. according to the described a kind of device that is used to treat compression fracture of vertabral body of claim 1, it is characterized in that: the near-end of said cavity or far-end are provided with the development point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220121341 CN202505402U (en) | 2012-03-28 | 2012-03-28 | Device for treating compression fracture of vertebral body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220121341 CN202505402U (en) | 2012-03-28 | 2012-03-28 | Device for treating compression fracture of vertebral body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202505402U true CN202505402U (en) | 2012-10-31 |
Family
ID=47057916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220121341 Expired - Lifetime CN202505402U (en) | 2012-03-28 | 2012-03-28 | Device for treating compression fracture of vertebral body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202505402U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104905868A (en) * | 2015-06-23 | 2015-09-16 | 上海凯利泰医疗科技股份有限公司 | Bone filling bag with nonuniform aperture |
-
2012
- 2012-03-28 CN CN 201220121341 patent/CN202505402U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104905868A (en) * | 2015-06-23 | 2015-09-16 | 上海凯利泰医疗科技股份有限公司 | Bone filling bag with nonuniform aperture |
| CN104905868B (en) * | 2015-06-23 | 2017-11-03 | 上海凯利泰医疗科技股份有限公司 | A kind of bone filling pouch of non-uniform holes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI LANGMAI MEDICAL INSTRUMENT TECHNOLOGY CO. Free format text: FORMER OWNER: CUI YINGYING Effective date: 20130315 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 201209 PUDONG NEW AREA, SHANGHAI TO: 201600 SONGJIANG, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130315 Address after: 201600, 4 floor, 198 Dajiang Road, Shanghai, Songjiang District Patentee after: Shanghai Langmai Medical Equipment Science & Technology Co., Ltd. Address before: 201209 No. 268, Lane 10, min yao Road, Shanghai, Pudong New Area 602 Patentee before: Cui Yingying |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121031 |