CN108837275A - A kind of blood vessel interposing catheter of the stiffness variable based on line driving - Google Patents
A kind of blood vessel interposing catheter of the stiffness variable based on line driving Download PDFInfo
- Publication number
- CN108837275A CN108837275A CN201810783185.6A CN201810783185A CN108837275A CN 108837275 A CN108837275 A CN 108837275A CN 201810783185 A CN201810783185 A CN 201810783185A CN 108837275 A CN108837275 A CN 108837275A
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- CN
- China
- Prior art keywords
- blood vessel
- catheter body
- catheter
- conduit
- stiffness variable
- 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.)
- Pending
Links
- 210000004204 blood vessel Anatomy 0.000 title claims abstract description 33
- 238000005452 bending Methods 0.000 claims abstract description 8
- 230000002792 vascular Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 229920000431 shape-memory polymer Polymers 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 208000024172 Cardiovascular disease Diseases 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000013130 cardiovascular surgery Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002324 minimally invasive surgery Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0043—Catheters; Hollow probes characterised by structural features
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M25/0054—Catheters; Hollow probes characterised by structural features with regions for increasing flexibility
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M2025/0063—Catheters; Hollow probes characterised by structural features having means, e.g. stylets, mandrils, rods or wires to reinforce or adjust temporarily the stiffness, column strength or pushability of catheters which are already inserted into the human body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2210/00—Anatomical parts of the body
- A61M2210/12—Blood circulatory system
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The present invention provides a kind of blood vessel interposing catheter of stiffness variable based on line driving, is related to the field of medical instrument technology.A kind of blood vessel interposing catheter of the stiffness variable based on line driving, including end cap, the catheter body containing multiple hollow channels, multiple groups helicla flute and more driving lines；The end cap is connected through a screw thread the tip for being fixed on catheter body；The front end of the more drivings line is connect with end cap, and is axially extended by multiple hollow channels of catheter body to the outside of the catheter body other end；The multiple groups helicla flute is arranged on the outer surface of catheter body.The blood vessel interposing catheter of stiffness variable provided by the invention based on line driving, with biggish flexibility, it can be achieved that the bending of deep camber, the vascular environment ability for adapting to human body complexity are strong.By changing the length of conduit to change the rigidity of conduit, therefore conduit can pass through different blood vessels, small to the wound of blood vessel, quickly through the different blood vessel of human body.
Description
Technical field
The present invention relates to the field of medical instrument technology more particularly to a kind of blood vessel interventions of the stiffness variable based on line driving
Conduit.
Background technique
Minimally Invasive Surgery is a kind of by human body natural's cavity or using manipulator and various image technologies, cures surgery
It is raw to be not necessarily to cause patient to implement to perform the operation in the case where huge wound, it has especially been obtained in the treatment of cardiovascular disease extensively
Application.
But due to the blood vessel of human body point, complex distribution, so vascular interventional treatment difficulty is high, it is complicated for operation, add
The upper prior art is limited, therefore minimally-invasive vascular intervenes generally existing following problem：1. traditional interposing catheter is big to the wound of blood vessel；
2. the power that can be born is different, so a rigidity is immutable since conduit is different by the thickness of human vas in surgical procedure
Conduit can not complete this work well.
At present in cardiovascular surgery mainly be traditional conduit, lower bending stiffness can make it through human body
Blood vessel.But it does not have the characteristic that can change, and does not solve the contradiction on rigidity and geometric scale.It is now existing can be with
Actively curved conduit is suggested.The wired driving conduit of primary structure, SMA drive conduit, and prebuckling conduit, these conduits can be with
Actively it is bent, but still without solving the contradiction in rigidity requirement.Having now can change the conduit of rigidity and is suggested.It is main
Wanting structure is to change the rigidity of conduit by changing the temperature of conduit, and changing using SMP (shape-memory polymer)
The shape of conduit is also changed when rigidity, still without solving the contradiction in active bending demand.
In conclusion at present it is necessary to propose it is a kind of with stiffness variable, can actively be bent and the conduit of variable dimension,
It helps operation tool to solve the contradiction on conduit performance requirement, and overcomes the problems, such as that conduit enters human vas difficulty.
Summary of the invention
In view of the drawbacks of the prior art, the present invention provides a kind of blood vessel interposing catheter of stiffness variable based on line driving,
Solve contradiction of the blood vessel interposing catheter on performance requirement.
A kind of blood vessel interposing catheter of the stiffness variable based on line driving, including end cap, leading containing multiple hollow channels
Tube body and more driving lines；The end cap is connected through a screw thread the tip for being fixed on catheter body；Before the more drivings line
End is connect with end cap, and is axially extended by multiple hollow channels of catheter body to the outside of the catheter body other end；It is described
The helicla flute of multiple groups hollow out is provided on catheter body.
Preferably, the multiple groups helicla flute being arranged on the catheter body can be compressed axially under external applied load, and change is led
The length and rigidity of pipe.
Preferably, the driving line and end cap are used to apply axial force to catheter body, when individually stretch a driving line or
Two driving lines of person, catheter body are actively bent, and when stretching four driving lines simultaneously, the length of conduit changes.
Preferably, the width of the multiple groups helicla flute being arranged on the catheter body and density are according to the bending of blood vessel interposing catheter
It is required that being determined with rigidity requirement.
As shown from the above technical solution, the beneficial effects of the present invention are：It is provided by the invention it is a kind of based on line driving
The blood vessel interposing catheter of stiffness variable, with biggish flexibility, it can be achieved that the bending of deep camber, adapts to the vascular circle of human body complexity
Border ability is strong.After the blood vessel interposing catheter enters human vas, it may be implemented actively to be bent, it is small to the wound of blood vessel, quickly
Pass through the bifurcated mouth of blood vessel.Meanwhile because the tip of conduit increases axial isolated degree of freedom, do not need to move integrally conduit
The axial position of catheter tip can be changed, therefore the wound of blood vessel is reduced.By changing the length of conduit to change
The rigidity of conduit, therefore conduit can pass through different blood vessels, it is small to the wound of blood vessel, quickly through the different blood of human body
Pipe.It withdraws from during human vas, at soft state, apparent sense of discomfort will not be caused to human body.
Detailed description of the invention
Fig. 1 is that a kind of structure of the blood vessel interposing catheter of stiffness variable based on line driving provided in an embodiment of the present invention is shown
It is intended to；
Fig. 2 is the structural schematic diagram of catheter body provided in an embodiment of the present invention；
Fig. 3 is the connection schematic diagram of conduit provided in an embodiment of the present invention and end cap；
Fig. 4 is the curved schematic of blood vessel interposing catheter provided in an embodiment of the present invention；
Fig. 5 is the compression schematic diagram of blood vessel interposing catheter provided in an embodiment of the present invention.
In figure, 1, end cap；2, catheter body；3, helicla flute；4, hollow channel；5, line is driven；6, screw thread.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
A kind of blood vessel interposing catheter of the stiffness variable based on line driving, as shown in Figure 1, including end cap 1, containing hollow logical
The catheter body 2 and driving line 5-1,5-2,5-3,5-4 of road 4-1,4-2,4-3,4-4；End cap 1 is fastened on by screw thread 6
The tip of catheter body 2；The front end of driving line 5-1,5-2,5-3,5-4 are connect with end cap 1, and pass through the hollow logical of catheter body 2
Road 4-1,4-2,4-3,4-4 are axially extended to the outside of 2 other end of catheter body；The spiral shell of multiple groups hollow out is provided on catheter body 2
Spin slot 3.The width and density of multiple groups helicla flute 3 are determined according to the bending requirement of blood vessel interposing catheter and rigidity requirement.
In the present embodiment, catheter body 2 as shown in Fig. 2, catheter body 2 and end cap 1 connection as shown in figure 3, catheter body 2 use
Polymer, driving line 5 use nylon.In use, driving line 5-1 is individually drawn along axial in the end of fixed catheter body 2
(5-2 or 5-3 or 5-4), due to the architectural characteristic of catheter body 2, the direction of catheter body 2 to 5-1 (or 5-2 or 5-3 or 5-3) are curved
Song is actively bent as shown in figure 4, catheter body 2 has occurred.Driving line 5-1 and 5-2 (5-2 and 5-3 or 5-3 and 5-4 are drawn along axial
Or 5-4 and 5-1), due to the architectural characteristic of catheter body 2, catheter body 2 to 5-1 and 5-2 (5-2 and 5-3 or 5-3 and 5-4 or 5-4 with
Direction bending between 5-1), catheter body 2, which has occurred, to be actively bent.Driving line 5-1,5-2,5-3,5-4 are drawn simultaneously along axial, due to
The special construction of catheter body 2,2 length of catheter body shorten, and 2 tip of catheter body is moved axially, and 2 tip of catheter body has
Isolated degree of freedom, meanwhile, the distance of the helicla flute 3 on 2 surface of catheter body changes, therefore the rigidity of catheter body 2 is changed
Become, as shown in Figure 5.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that：It still may be used
To modify to technical solution documented by previous embodiment, or some or all of the technical features are equal
Replacement；And these are modified or replaceed, model defined by the claims in the present invention that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (4)
1. a kind of blood vessel interposing catheter of the stiffness variable based on line driving, it is characterised in that：Including end cap, containing multiple hollow
The catheter body in channel and more driving lines；The end cap is connected through a screw thread the tip for being fixed on catheter body；The more drives
The front end of moving-wire is connect with end cap, and is axially extended by multiple hollow channels of catheter body to outside the catheter body other end
Portion；The helicla flute of multiple groups hollow out is provided on the catheter body.
2. a kind of blood vessel interposing catheter of stiffness variable based on line driving according to claim 1, it is characterised in that：Institute
Stating the multiple groups helicla flute being arranged on catheter body can be compressed axially under external applied load, change the length and rigidity of conduit.
3. a kind of blood vessel interposing catheter of stiffness variable based on line driving according to claim 1, it is characterised in that：Institute
It states driving line and end cap is used to apply axial force to catheter body, stretch a driving line or two driving lines, conduit when independent
Body is actively bent, and when stretching four driving lines simultaneously, the length of conduit changes.
4. a kind of blood vessel interposing catheter of stiffness variable based on line driving according to claim 1, it is characterised in that：Institute
The width and density for stating the multiple groups helicla flute being arranged on catheter body are determined according to the bending requirement of blood vessel interposing catheter and rigidity requirement
It is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810783185.6A CN108837275A (en) | 2018-07-17 | 2018-07-17 | A kind of blood vessel interposing catheter of the stiffness variable based on line driving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810783185.6A CN108837275A (en) | 2018-07-17 | 2018-07-17 | A kind of blood vessel interposing catheter of the stiffness variable based on line driving |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108837275A true CN108837275A (en) | 2018-11-20 |
Family
ID=64197695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810783185.6A Pending CN108837275A (en) | 2018-07-17 | 2018-07-17 | A kind of blood vessel interposing catheter of the stiffness variable based on line driving |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108837275A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109999317A (en) * | 2019-05-21 | 2019-07-12 | 心凯诺医疗科技(上海)有限公司 | A kind of conduit and intervention device of adjustable hardness |
| CN110152165A (en) * | 2019-06-18 | 2019-08-23 | 东北大学 | A kind of blood vessel interposing catheter of stiffness variable of the tip based on annular flexible arm |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101703424A (en) * | 2003-05-23 | 2010-05-12 | 诺瓦尔外科系统公司 | Articulating mechanism for remote manipulation of a surgical or diagnostic tool |
| CN103874524A (en) * | 2011-08-04 | 2014-06-18 | 伦敦国王学院 | Continuum manipulator |
| CN105903117A (en) * | 2016-04-08 | 2016-08-31 | 上海庆之医疗科技有限公司 | Conduit |
| CN108066881A (en) * | 2018-01-29 | 2018-05-25 | 天津大学 | Blood vessel interposing catheter, equipment, contact force detection method and detection device |
| CN209900392U (en) * | 2018-07-17 | 2020-01-07 | 东北大学 | Variable-rigidity vascular interventional catheter based on line driving |
-
2018
- 2018-07-17 CN CN201810783185.6A patent/CN108837275A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101703424A (en) * | 2003-05-23 | 2010-05-12 | 诺瓦尔外科系统公司 | Articulating mechanism for remote manipulation of a surgical or diagnostic tool |
| CN103874524A (en) * | 2011-08-04 | 2014-06-18 | 伦敦国王学院 | Continuum manipulator |
| CN105903117A (en) * | 2016-04-08 | 2016-08-31 | 上海庆之医疗科技有限公司 | Conduit |
| CN108066881A (en) * | 2018-01-29 | 2018-05-25 | 天津大学 | Blood vessel interposing catheter, equipment, contact force detection method and detection device |
| CN209900392U (en) * | 2018-07-17 | 2020-01-07 | 东北大学 | Variable-rigidity vascular interventional catheter based on line driving |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109999317A (en) * | 2019-05-21 | 2019-07-12 | 心凯诺医疗科技(上海)有限公司 | A kind of conduit and intervention device of adjustable hardness |
| CN110152165A (en) * | 2019-06-18 | 2019-08-23 | 东北大学 | A kind of blood vessel interposing catheter of stiffness variable of the tip based on annular flexible arm |
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