CN101999925B - Expansion structure of self-limiting high-pressure expansion saccule - Google Patents
Expansion structure of self-limiting high-pressure expansion saccule Download PDFInfo
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- CN101999925B CN101999925B CN2010105602470A CN201010560247A CN101999925B CN 101999925 B CN101999925 B CN 101999925B CN 2010105602470 A CN2010105602470 A CN 2010105602470A CN 201010560247 A CN201010560247 A CN 201010560247A CN 101999925 B CN101999925 B CN 101999925B
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- saccule
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- outer conduit
- expansion
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Abstract
The invention relates to an expansion structure of a high-pressure expansion saccule, comprising an expandable saccule and an outer conduit used for fixing two ends of the expandable saccule. The expansion structure is characterized in that the outer conduit comprises an outer conduit main body and a limit pipe, wherein the outer conduit main body is divided into two sections which are mutually sleeved, a slideway is arranged on the pipe wall at the front end of the outer conduit main body, a section of limit sleeve is arranged in an inner cavity at the far end of the outer conduit main body, a hook which is penetratively sleeved in the slideway of the outer conduit main body is arranged on the outer wall of the near end of the limit pipe, and simultaneously, the front end and the rear end of the expandable saccule are respectively and fixedly connected with the outer conduit main body and the far end of the limit pipe to form the expansion structure of the self-limiting high-pressure expansion saccule. Therefore, the expansion structure is extremely beneficial to ideally-expanded compressed centrum, and simultaneously can reduce the longitudinal swelling capacity, provide effective reset function in the operation process, judge the position of the expandable saccule through observation marks and the marking position and ensure that the expandable saccule can freely reach an affected part.
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments, particularly a kind of expansion structure from spacing expanding saccule by high pressure imports the preceding pretreatment unit of medium when going for the treatment of patients with osteoporosis anterior vertebral.
Background technology
Vertebral fracture can cause continuing the dysfunction property pain of several months; This pain can make patient disability and motor capacity; Can promptly cause the fatal complication such as formation and pulmonary infarction of forfeiture, pulmonary atelectasis and pneumonia, the DVT of limb function; In addition, compression fracture of vertabral body also was the reason that independent living ability could not taken care of oneself and lose to a lot of life of elderly person in the past.Use a large amount of Drug therapys, usually cause poisonous side effect of medicine and drug dependence, the patient scarcely accepts maybe can not tolerate surgical operation therapy.
Normal at present employing percutaneous vertebroplasty is treated vertebral compression fracture, and it is that pedicle is punctured to anterior vertebral under C arm power traction is led, and in vertebral body, injects fixedly vertebral body of bone cement through puncture needle then.But the percutaneous vertebroplasty also has certain shortcoming and defect, promptly; On the one hand, inject bone cement through puncture needle and cause bone cement to leak easily, cause multiple complications; On the other hand, this technology can only partly ease the pain, and can not recover vertebral height; Simultaneously, when injecting bone cement, need bigger pressure, easily the patient is caused other injury.
For addressing the above problem; There is the inventor to propose a kind of spatial apparatus of formation before bone cement is being injected in the affected part that is used for; Disclose a kind of system with expandable bodies treatment fracture or sick bone like Chinese invention patent ublic specification of application No. 1557257 (on December 29th, open day), this system comprises: one first lead sheath; One first expandable bodies; This expandable bodies has the state that subsides; Be used for space in the insertion of first lead sheath is said, and can become swelling state, so that compacting cancellous is to form a cavity in interior space from the collapsed mode expansion; This system also comprises: one second lead sheath, first and second lead sheaths are suitable for providing the independent and isolated passage that gets into bone; One second expandable bodies, this expandable bodies has the state that subsides, and is used for space in the insertion of second lead sheath is said, and can become swelling state from the collapsed mode expansion, so that compacting cancellous is to form a cavity in interior space; And wherein first expandable bodies and second expandable bodies are suitable for forming the cavity with ideal form and size when their swelling state.The shortcoming of this device is, for the independent and isolated passage that is suitable for getting into bone is provided, has used lead sheath, makes the patient bear some unnecessary miseries, need use two expanders just can make cavity reach desired shapes and size simultaneously.
The applicant has also proposed name on May 12nd, 2006 to State Intellectual Property Office and has been called " vertebral body expansion of balloon catheter (ZL200620041715.2) "; Adopt a balloon-expandable, flexible inside and outside conduit, the rubber-like that is placed in the inner catheter to support seal wire and a branch type link; By a branch of branch type parts about the gap of outer catheter between inner catheter be located at outer catheter balloon-expandable terminal and the inner catheter afterbody and constitute a closed channel, through balloon-expandable controlled the expansion of realization to patient vertebral body compressibility lesions.
Applicant of the present invention subsequently is again on April 17th, 2009, and having proposed application number is one kind of 200910057091.1del follow-on " expansion structure of expanding saccule by high pressure ".Long for through " being positioned at several through holes that are provided with on the end outer catheter in dilatation balloon district ", this through hole perpendicular to outer catheter is become impel dilatation balloon to be partial to realize being expanded to main balloon expandable structure perpendicular to duct direction.
Show through actual the use: the technique scheme that the applicant proposes; Though can play corresponding effect; But the balloon structure in the original design scheme one is because balloon expandable its direction of advancing when expanding is coaxial in inside and outside conduit, thereby very easily causes the phenomenon of the axial expansion of sacculus prior to lateral magnification, this with general patient treatment in the needs in affected part not too conform to; Over-drastic vertical expansion; Lateral magnification is reduced, can not play the effect of reduction with good effectively, might cause the failure of operation.Structure in the design two; Though several through holes that are provided with through an end outer catheter that is positioned at the dilatation balloon district; This through hole perpendicular to outer catheter become impel dilatation balloon to realize being expanded to main balloon expandable structure perpendicular to duct direction, but still not exclusively desirable.
Therefore, how existing product is carried out necessary improvement, the vertebral body that more adapts to patient demand dilating catheter is provided, just become the problem that the goods producer need solve.
Summary of the invention
The object of the invention: aim to provide a kind of vertebral body expansion of balloon catheter that can in fracture is subsided vertebral body, form desirable cavity, both reached Rapid Expansion and propped fracture and subside, simultaneously can alleviate the patient suffering again.
This expansion structure from spacing expanding saccule by high pressure; Comprise a balloon-expandable, and the outer catheter that is used for fixing the balloon-expandable two ends, described outer catheter constitutes by being divided into two-section and belled each other outer catheter main body and position-limiting tube; Said outer catheter body front end tube wall is provided with a slideway; And at one section position-limiting tube of its distal lumen arrangement, the near-end outer wall of said position-limiting tube is provided with one and is set on the interior hook of outer catheter main body slideway, simultaneously; The rear and front end of described balloon-expandable is fixed with the far-end of outer catheter main body and position-limiting tube respectively, constitutes the expansion structure from spacing expanding saccule by high pressure thus.
Described outer catheter is a kind of metal material body or plastic material body.
The expansion structure of this expanding saccule by high pressure that proposes according to above technical scheme; Be provided with a slideway through catheter proximal end tube wall outside; And be provided with one at far-end and be nested with one section position-limiting tube of conduit cavity outside, constituting a slidingtype from spacing expanding mechanism, this resets very favourable to the inflate compression vertebral body of realizing ideal in balloon-expandable is between given zone; For reducing its longitudinal dilatation amount, for operation process provides effective reset function; Through observing the position that sign and mark position are inferred balloon-expandable, make balloon-expandable can arrive the affected part freely simultaneously.
Description of drawings
Fig. 1 is a basic structure sketch map of the present invention;
Fig. 2 is the plane analysis sketch map of Fig. 1.
Among the figure: the spacing hook of 1-outer catheter main body 2-balloon-expandable 3-position-limiting tube 4-slideway 5-.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done further detailed explanation.
What accompanying drawing 1 provided is this expansion structure from spacing expanding saccule by high pressure that the present invention relates to; Comprise a balloon-expandable 2; And the outer catheter that is used for fixing the balloon-expandable two ends; It is characterized in that: described outer catheter constitutes by being divided into two-section and belled each other outer catheter main body 1 and position-limiting tube 3, and said outer catheter main body 1 front end tube wall is provided with a slideway 4, and catheter main body 1 distal lumen is settled one section position-limiting tube 3 outside; The near-end outer wall of said position-limiting tube 3 is provided with one and is set on the interior hook 5 of outer catheter main body 1 slideway; Simultaneously, the rear and front end of described balloon-expandable 2 is fixed with the far-end of outer catheter main body 1 and position-limiting tube 3 respectively, constitutes the expansion structure from spacing expanding saccule by high pressure thus.
This expansion structure from spacing expanding saccule by high pressure, its operation principle is: before topping up was not expanded, the utricule of described balloon-expandable 2 was close on the outer catheter.When Once you begin topping up is perhaps inflated; Expansion along with balloon-expandable 2; The slideway 4 that the position-limiting tube 3 that is nested with catheter main body 1 inner chamber outside is provided with on the outer catheter tube wall slides; And under the effect of the spacing hook of position-limiting tube 3 near-end settings, block again, make whole sacculus vertically be in a desired location.Along with proceeding of topping up, 2 of balloon-expandables can with the perpendicular direction of outer catheter on continue to expand,
The front end tube wall is provided with a slideway; And be provided with one at far-end and be nested with one section position-limiting tube 3 of catheter main body 1 inner chamber outside; The near-end outer wall of said position-limiting tube is provided with one and is set on the interior hook of outer catheter slideway; Simultaneously, the rear and front end of described balloon-expandable is fixed with the far-end of outer catheter main body and position-limiting tube respectively, constitutes the expansion structure from spacing expanding saccule by high pressure thus.And balloon structure that can be shown in the ZL200620041715.2 patent: very easily at first expand to axis direction along outer catheter.The change of this at first expansion direction not only can reset direct, the ideal of the human spine that sustains damage or compress; And can avoid because the longitudinal dilatation phenomenon in advance that adopts the balloon structure shown in the ZL200620041715.2 patent to cause; Because the generation of this longitudinal dilatation can make lateral magnification reduce; The effect that resets can not be played effectively, the failure of operation might be caused.The plastic tube that technical scheme of the present invention adopts the metal material of good rigidly or has certain rigidity intensity is taken on outer catheter; So in fact can limit the sacculus that is fixed on the body along with the stretching, extension of being pressed body, and cause sacculus to produce axial expansion along outer catheter.Just because of above-mentioned two innovative technologies of present technique scheme employing, so just make the present invention overcome the use defective of prior art.
Claims (2)
1. expansion structure from spacing expanding saccule by high pressure; Comprise a balloon-expandable (2); And the outer catheter that is used for fixing the balloon-expandable two ends; It is characterized in that: described outer catheter constitutes by being divided into two-section and belled each other outer catheter main body (1) and position-limiting tube (3), and said outer catheter main body (1) front end tube wall is provided with a slideway (4), and catheter main body (1) distal lumen is settled one section position-limiting tube (3) outside; The near-end outer wall of said position-limiting tube (3) is provided with one and is set on the interior hook (5) of outer catheter main body (1) slideway; Simultaneously, the rear and front end of described balloon-expandable (2) is fixed with the far-end of outer catheter main body (1) and position-limiting tube (3) respectively, constitutes the expansion structure from spacing expanding saccule by high pressure thus.
2. a kind of expansion structure from spacing expanding saccule by high pressure as claimed in claim 1 is characterized in that: described outer catheter is a kind of metal material body or plastic material body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105602470A CN101999925B (en) | 2010-11-26 | 2010-11-26 | Expansion structure of self-limiting high-pressure expansion saccule |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105602470A CN101999925B (en) | 2010-11-26 | 2010-11-26 | Expansion structure of self-limiting high-pressure expansion saccule |
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| Publication Number | Publication Date |
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| CN101999925A CN101999925A (en) | 2011-04-06 |
| CN101999925B true CN101999925B (en) | 2012-06-27 |
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| CN2010105602470A Active CN101999925B (en) | 2010-11-26 | 2010-11-26 | Expansion structure of self-limiting high-pressure expansion saccule |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105559868B (en) * | 2015-12-15 | 2018-10-30 | 宁波华科润生物科技有限公司 | Fixed system between a kind of spinous process |
| CN109192034A (en) * | 2018-10-26 | 2019-01-11 | 刘林 | A kind of controllable spinal cord injury model device and making and use method |
| CN111388041B (en) * | 2019-12-23 | 2021-05-18 | 宁波市北仑区人民医院 | Vaginal hemostat |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6719773B1 (en) * | 1998-06-01 | 2004-04-13 | Kyphon Inc. | Expandable structures for deployment in interior body regions |
| CN2785549Y (en) * | 2005-03-25 | 2006-06-07 | 邵卫星 | Saccule enlarging tube for treating vertebra crush fracture |
| CN2905092Y (en) * | 2006-05-12 | 2007-05-30 | 上海凯利泰医疗科技有限公司 | Balloon catheter for expanding vertebra |
| CN101537223A (en) * | 2009-04-17 | 2009-09-23 | 上海凯利泰医疗科技有限公司 | Expansion structure for expanding saccule by high pressure |
| CN201862127U (en) * | 2010-11-26 | 2011-06-15 | 上海凯利泰医疗科技股份有限公司 | Dilation structure of self-limiting high pressure dilatable ball bladder |
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2010
- 2010-11-26 CN CN2010105602470A patent/CN101999925B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6719773B1 (en) * | 1998-06-01 | 2004-04-13 | Kyphon Inc. | Expandable structures for deployment in interior body regions |
| CN2785549Y (en) * | 2005-03-25 | 2006-06-07 | 邵卫星 | Saccule enlarging tube for treating vertebra crush fracture |
| CN2905092Y (en) * | 2006-05-12 | 2007-05-30 | 上海凯利泰医疗科技有限公司 | Balloon catheter for expanding vertebra |
| CN101537223A (en) * | 2009-04-17 | 2009-09-23 | 上海凯利泰医疗科技有限公司 | Expansion structure for expanding saccule by high pressure |
| CN201862127U (en) * | 2010-11-26 | 2011-06-15 | 上海凯利泰医疗科技股份有限公司 | Dilation structure of self-limiting high pressure dilatable ball bladder |
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| CN101999925A (en) | 2011-04-06 |
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