CN110124179A - A kind of hardness is adjustable and the interposing catheter of head end direction-agile - Google Patents
A kind of hardness is adjustable and the interposing catheter of head end direction-agile Download PDFInfo
- Publication number
- CN110124179A CN110124179A CN201910417192.9A CN201910417192A CN110124179A CN 110124179 A CN110124179 A CN 110124179A CN 201910417192 A CN201910417192 A CN 201910417192A CN 110124179 A CN110124179 A CN 110124179A
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- China
- Prior art keywords
- filament
- head end
- hardness
- catheter body
- agile
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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
- 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
- A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
- A61M25/008—Strength or flexibility characteristics of the catheter tip
-
- 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
Abstract
The problem to be solved in the present invention is to provide one kind be not only adjustable catheter body hardness and be adjustable head end bending direction hardness be adjusted and head end direction-agile interposing catheter.Catheter body is softer under normal circumstances, filament B can be tensed by hardness adjuster to increase the hardness of middle part by comparing curved blood vessel, catheter body support force can be increased, it is fed forward to be conducive to intervention material in conduit, avoids the occurrence of catheter body and " withdraw " phenomenon；After catheter body protrudes into blood vessel designated position, realizes that catheter body is hardened by tensing filament B, and can be consistent with shape of blood vessel, reduce the drawing to blood vessel.If necessary to adjust conductor housing extreme direction, filament A is tensed to make conduit head end deflect to the direction of tension by direction regulator.
Description
Technical field
The present invention relates to the interposing catheter in intervention inspection in the cerebrovascular and therapeutic process for angiography and treatment, tools
Body is related to that a kind of hardness is adjustable and the interposing catheter of head end direction-agile.
Background technique
With the extension of the average life span, cranial vascular disease, which becomes, causes the Etiological of people's death, caused by height cause
Residual rate also gives patient home and entire society's bring heavy burden.Screening, treatment of the cerebral angiography in cranial vascular disease
It and is a kind of important detection methods in follow-up.
Common tool is the interposing catheter of radiography and treatment, Jie of radiography and treatment in cerebral angiography and therapeutic process
Enter the key equipment that conduit is couple radiography, should have suitable hardness, elasticity, flexibility, support force and torsion；It answers
With good radiotransparency energy；There is certain configuration memory, tube wall is smooth, and radiography performance is high, and thrombosis performance should control
In lowest range.Angiography catheter is a root long shape pipeline, and main function is that contrast agent is enable to can smoothly enter into target blood, is produced
Raw contrasting effects.Conduit is treated in addition to having the function of radiography, lumen can also convey interventional therapy material, which includes
Microtubular, intermediate conductor and guiding catheter, microtubular caliber 1.4F-3F, intermediate conductor caliber 4F-6F, guiding catheter caliber 5F-
8F.It must have certain flexibility that can pass through on the arch of aorta or the curved blood vessel of encephalic, while have again certain
Hardness, support intraluminal intervention material to advance.There is in tube wall PTFE (polytetrafluoroethylene (PTFE)) hydrophilic coating, make seal wire or its
Its intervention material can be moved smoothly, and centre has braided metal twine increase hardness and developability, the materials such as outer painting nylon to add
Strong tube wall prevents contrast agent excessive.
It is single for cerebrovascular disease radiography and the common conduit hardness of interventional therapy at present, it is difficult to pass through bending when really up to the mark
Blood vessel, effective support force cannot be reached when excessively soft, since hardness not enough will appear pipe when conveying intervention material when operation
Head " withdraws " phenomenon backward.A piece conduit head end only has a kind of shape, and tube head direction when twisting pipe in addition in axial direction changing
Become outer, the angle of head end and long axis is difficult to change.
For above-mentioned drawback, needed in radiography and surgical procedure coaxial in the case where overlength exchange guidewire (260cm or more) assists
It replaces other conduits or conduit is built into a ultrahard guide wire and increases conduit hardness.It to be removed again when needing to change head end direction
Conduit is external to patient out, carries out moulding again using vapor to conduit head end and changes head end direction.This undoubtedly increases trouble
Person's operating time and the exposure duration under X-ray, operation safety cannot be effectively improved.And conduit is built into one and superhard leads
The method of silk increase conduit hardness can reduce effective lumen of conduit, be unfavorable for other intervention materials or contrast agent passes through.
Summary of the invention
Catheter body hardness had not only been adjustable the problem to be solved in the present invention is to provide one kind but also was adjustable head end bending direction
Hardness is adjustable and the interposing catheter of head end direction-agile.
The present invention is achieved by the following technical solutions:
A kind of hardness is adjustable and the interposing catheter of head end direction-agile,
Including catheter body, two filament A, more filament B, hardness adjuster and direction regulator；
The catheter body is followed successively by head end, middle part and tail end, the centre of the head end and middle part along its length direction
Layer is that metal wire knitted forms, and the internal layer and outer layer of the head end and middle part are hydrophilic coating；
The hardness adjuster and direction regulator are installed on the tail end, and the hardness adjuster and direction regulator are equal
Rotatable engagement has rotation adjustment axis；
The head end is pre-formed as bend in one direction shape, and a filament A is located at the conduit sheet along curved direction in the head end
It can slide in body wall and back and forth, one end of which is fixed on the stem of the head end, other end forward directions to be wrapped in the direction regulator
Rotation adjustment axis on；Another filament A is located in the catheter body wall along the excurvation direction of the head end and can be round-trip
Sliding, one end of which is fixed on the stem of the head end, other end reverse-windings in the rotation adjustment axis of the direction regulator；
The more filament B are located in the catheter body wall and can slide back and forth along middle part length, the more filament B
One end be uniformly fixed in the circumferential edge of the middle part head end, the equal forward direction of the other end is wrapped in the rotation of the hardness adjuster
On modulation nodal axisn.
Further, the stem of the head end is equipped with developing mark, and the material of the developing mark is platinum, and described two
One end of filament A is fixed on the developing mark.
Further, the hardness of the head end is lower than the hardness of the middle part.
Further, the quantity of the filament B is 4 or 6, and the filament A and filament B are diameter 0.05-0.3mm
Stainless steel wire.
Further, the outer wall of the catheter body is equipped with and filament A and the one-to-one filament sheath of filament B, described
Filament A and filament B is corresponded across filament sheath, and the material of the filament sheath is PTFE or polyurethane.
Further, the catheter body outer diameter is 0.5-3mm, length 80-140cm, and the bending angle of the head end is
30-90 degree.
The present invention is acquired compared with prior art to be had the beneficial effect that:
1, head end is softer with respect to middle part under normal circumstances, can by comparing curved blood vessel, by hardness adjuster come
Filament B is tensed to increase the hardness of middle part, catheter body support force can be increased, so that it is defeated forward to be conducive to catheter body
It send, avoids the occurrence of catheter body and " withdraw " phenomenon；After catheter body protrudes into blood vessel designated position, realized by tensing filament B
Catheter body is hardened, and can be consistent with shape of blood vessel, reduces the drawing to blood vessel.If necessary to adjust catheter body position, release
Hardness adjuster is put to making the middle part of catheter body soften again after filament B tension, avoids the stimulation to curved blood vessel.
2, the head end direction-agile of catheter body makes head by the cooperation of two filament A by adjusting direction regulator
End carries out different degrees of bending, can be convenient super choosing and enters the biggish furcation blood vessel of angulation, or reaches different lesions
Position.Compared with conventional catheters, it is not necessary to which withdrawing from conduit remodeling tube head direction again to save operating time reduces hand
Art risk.
Detailed description of the invention
Fig. 1 is adjusted for hardness of the present invention and the interposing catheter schematic view of the front view of head end direction-agile；
Fig. 2 is the structural schematic diagram of the cross section of middle part of the present invention；
Fig. 3 is direction regulator schematic perspective view of the present invention；
Fig. 4 is hardness adjuster schematic perspective view of the present invention；
Fig. 5 is that hardness of the present invention is adjusted and the interposing catheter of head end direction-agile working condition in the cerebrovascular is illustrated
Figure；
In figure: 1, middle part, 2, head end, 3, tail end, 4, hardness adjuster, 5, direction regulator, 6, filament A, 7, filament B, 8,
Developing mark, 9, filament sheath.
Specific embodiment
The present invention is described in more detail with reference to the accompanying drawing.Described embodiment is only the application a part
Embodiment, instead of all the embodiments.Based on embodiments herein, those of ordinary skill in the art are not making creation
Property labour under the premise of every other embodiment obtained, shall fall in the protection scope of this application.
A kind of hardness as shown in Figs. 1-5 is adjustable and the interposing catheter of head end direction-agile, mainly include by head end 2,
The catheter body that middle part 1 and tail end 3 form, two filament A6, four filament B7, hardness adjuster 4 and direction regulator 5.
The head end 2 and middle part 1 are that stainless steel metal wire weaves, during wherein the count of head end 2 is less than
Between portion 1 count, thus guarantee head end 2 hardness be lower than middle part 1 hardness, in order to facilitate viewing head end 2 under X-ray
Position, the stem of head end 2 is equipped with developing mark 8, and the material of the developing mark 8 is platinum.The hardness adjuster 4 and side
It is installed on the tail end 3 to adjuster 5, the hardness adjuster 4 and direction regulator 5 have by bracket rotatable engagement
Rotate adjustment axis.In the present embodiment, head end length 30mm, middle part length 130cm, head end and middle part outer diameter are 2mm, interior
Diameter is 1.5mm.The diameter of two filament A6 and four filament B7 is the stainless steel wire of 0.1mm.
The head end 2 is pre-formed as bend in one direction shape, and bending angle is 45 °.A piece filament A6 is along the head end 2
Interior curved direction is located in the catheter body wall and can slide back and forth, and one end of which is fixed on the developing marks 8 of 2 stem of head end
Upper, other end forward direction is wrapped in the rotation adjustment axis of the direction regulator 5；Another filament A6 is along the head end 2
Excurvation direction is located on the catheter body wall and can slide back and forth, and one end of which is fixed on the developing marks 8 of 2 stem of head end
Upper, other end reverse-winding is in the rotation adjustment axis of the direction regulator 5；Four filament B7 are long along middle part 1
Degree is located in the catheter body wall and can slide back and forth, and one end of the more filament B7 is uniformly fixed on the middle part 1
In the circumferential edge of head end, the equal forward direction of the other end is wrapped in the rotation adjustment axis of the hardness adjuster 4.It is particularly described to lead
The outer wall of tube body is equipped with and filament A 6 and the one-to-one filament sheath 9 of filament B 7, the filament A 6 and filament B 7 one
One is corresponding across filament sheath 9, and the material of the filament sheath 9 is PTFE or polyurethane.Filament A in this way and filament B can be along filaments
Intrathecal round-trip sliding, facilitates operation.The internal layer and outer layer of the head end 2 and middle part 1 are hydrophilic coating, for reducing blood is caused
Bolt.
It is adjusted with hardness of the present invention and the super choosing of the interposing catheter of head end direction-agile enters internal carotid latter end
For, specific steps are as follows:
Step 1: being inserted into seal wire in interposing catheter, under seal wire auxiliary, the head end of catheter body reaches the arch of aorta, passes through tune
The rotation adjustment axis of the hardness adjuster of catheter body tail end is saved to increase the middle part of the tension increase catheter body of filament B
Hardness increases another filament A of tension while relaxation of a filament A by the rotation of the rotation adjustment axis of direction regulator,
Come the bending angle direction of real head end, and enter openings in blood vessels on the arch of aorta under seal wire auxiliary, intervention harder at this time is led
Pipe auxiliary seal wire enters at carotid bifuracation.
Step 2: release hardness adjuster and direction regulator be to the tension of filament A and filament B, interposing catheter become compared with
Soft normality moves on the designated position into internal carotid end under seal wire auxiliary.
Step 3: increasing the tension of filament B by adjusting hardness adjuster, the hardness of catheter body middle part is promoted.So
After extract seal wire, interposing catheter complies with shape of blood vessel and is hardened at this time, can carry out other interventional procedures.
Step 4: adjusting direction regulator to the tension of two filament A to the head end direction for changing catheter body.This
Shi Yigen filament A is tensed, and in addition a filament A relaxation, head end are deflected towards the side of tension.
Step 5: discharging all adjuster tension when interventional procedure finishes, interposing catheter is restored to compared with soft state, slowly
Withdraw from conduit.
Claims (6)
1. a kind of hardness is adjusted and the interposing catheter of head end direction-agile, which is characterized in that
Including catheter body, two filament A(6), more filament B(7), hardness adjuster (4) and direction regulator (5)；
The catheter body is followed successively by head end (2), middle part (1) and tail end (3) along its length direction, the head end (2) and
The middle layer of middle part (1) is that metal wire knitted forms, and the internal layer and outer layer of the head end (2) and middle part (1) are parent
Water coating；
The hardness adjuster (4) and direction regulator (5) are installed on the tail end (3), the hardness adjuster (4) and
Direction regulator (5) rotatable engagement has rotation adjustment axis；
The head end (2) is pre-formed as bend in one direction shape, a filament A(6) institute is located at along the interior curved direction of the head end (2)
State in catheter body wall and can slide back and forth, one end of which is fixed on the stem of the head end (2), other end forward direction be wrapped in it is described
In the rotation adjustment axis of direction regulator (5)；Another filament A(6) along the excurvation direction of the head end (2) it is located at described lead
It can slide in tube body wall and back and forth, one end of which is fixed on the stem of the head end (2), other end reverse-windings in the direction
In the rotation adjustment axis of adjuster (5)；
The more filament B(7) it is located in the catheter body wall and can slide back and forth along middle part (1) length, it is described more
Root filament B(7) one end be uniformly fixed in the circumferential edge of the middle part (1) head end, the equal forward direction of the other end is wrapped in described
In the rotation adjustment axis of hardness adjuster (4).
2. hardness according to claim 1 is adjusted and the interposing catheter of head end direction-agile, which is characterized in that the head
Hold the stem of (2) to be equipped with developing mark (8), the material of the developing mark (8) is platinum, two filament A(6) one end
It is fixed on the developing mark (8).
3. hardness according to claim 1 is adjusted and the interposing catheter of head end direction-agile, which is characterized in that the head
The hardness of (2) is held to be lower than the hardness of the middle part (1).
4. hardness according to claim 1 is adjusted and the interposing catheter of head end direction-agile, which is characterized in that described thin
Silk B(7) quantity be 4 or 6, the filament A(6) and filament B(7) be diameter 0.05-0.3mm stainless steel wire.
5. hardness according to claim 4 is adjusted and the interposing catheter of head end direction-agile, which is characterized in that described to lead
The outer wall of tube body is equipped with and filament A(6) with filament B(7) filament sheath (9) correspondingly, the filament A(6) and filament B
(7) it corresponds across filament sheath (9), the material of the filament sheath (9) is PTFE or polyurethane.
6. hardness according to claim 1-5 is adjusted and the interposing catheter of head end direction-agile, feature exist
In the catheter body outer diameter is 0.5-3mm, length 80-140cm, and the bending angle of the head end (2) is 30-90 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910417192.9A CN110124179A (en) | 2019-05-20 | 2019-05-20 | A kind of hardness is adjustable and the interposing catheter of head end direction-agile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910417192.9A CN110124179A (en) | 2019-05-20 | 2019-05-20 | A kind of hardness is adjustable and the interposing catheter of head end direction-agile |
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| Publication Number | Publication Date |
|---|---|
| CN110124179A true CN110124179A (en) | 2019-08-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910417192.9A Pending CN110124179A (en) | 2019-05-20 | 2019-05-20 | A kind of hardness is adjustable and the interposing catheter of head end direction-agile |
Country Status (1)
| Country | Link |
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| CN (1) | CN110124179A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110584744A (en) * | 2019-09-25 | 2019-12-20 | 广州迈景医学科技发展有限公司 | Suction catheter device |
| CN112190815A (en) * | 2020-10-21 | 2021-01-08 | 郑州大学第一附属医院 | Catheter intervention device with adjustable hardness |
| CN114404023A (en) * | 2019-09-03 | 2022-04-29 | 深圳北芯医疗科技有限公司 | Variable hardness structure, flexible seal wire and cryoablation device |
| CN115337520A (en) * | 2022-08-15 | 2022-11-15 | 上海鹏冠生物医药科技有限公司 | Human body cavity intervention device with end capable of arbitrarily steering |
-
2019
- 2019-05-20 CN CN201910417192.9A patent/CN110124179A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114404023A (en) * | 2019-09-03 | 2022-04-29 | 深圳北芯医疗科技有限公司 | Variable hardness structure, flexible seal wire and cryoablation device |
| CN110584744A (en) * | 2019-09-25 | 2019-12-20 | 广州迈景医学科技发展有限公司 | Suction catheter device |
| CN112190815A (en) * | 2020-10-21 | 2021-01-08 | 郑州大学第一附属医院 | Catheter intervention device with adjustable hardness |
| CN112190815B (en) * | 2020-10-21 | 2022-07-19 | 郑州大学第一附属医院 | Catheter intervention device with adjustable hardness |
| CN115337520A (en) * | 2022-08-15 | 2022-11-15 | 上海鹏冠生物医药科技有限公司 | Human body cavity intervention device with end capable of arbitrarily steering |
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