CN108201653B - Controllable curved pipe - Google Patents
Controllable curved pipe Download PDFInfo
- Publication number
- CN108201653B CN108201653B CN201810217392.5A CN201810217392A CN108201653B CN 108201653 B CN108201653 B CN 108201653B CN 201810217392 A CN201810217392 A CN 201810217392A CN 108201653 B CN108201653 B CN 108201653B
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- CN
- China
- Prior art keywords
- catheter
- handle
- head
- clamping groove
- wall surface
- 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.)
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- 239000002131 composite material Substances 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract description 25
- 230000003902 lesion Effects 0.000 abstract description 8
- 210000004204 blood vessel Anatomy 0.000 abstract description 6
- 241001484259 Lacuna Species 0.000 abstract description 5
- 230000007547 defect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
- A61M25/0133—Tip steering devices
- A61M25/0136—Handles therefor
-
- 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
- A61M25/0045—Catheters; Hollow probes characterised by structural features multi-layered, e.g. coated
-
- 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
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
- A61M25/0133—Tip steering devices
- A61M25/0138—Tip steering devices having flexible regions as a result of weakened outer material, e.g. slots, slits, cuts, joints or coils
-
- 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
- A61M2025/006—Catheters; Hollow probes characterised by structural features having a special surface topography or special surface properties, e.g. roughened or knurled surface
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 invention discloses a controllable bending catheter which comprises an outer catheter, an inner catheter, a first handle with a through hole and a second handle with a through hole, wherein the inner catheter and the outer catheter are coaxially arranged in sequence from inside to outside, the head end of the inner catheter is connected with the head end of the outer catheter, and the tail end of the inner catheter extends to the outside of the outer catheter; a plurality of grooves are uniformly formed in the outer wall surface of the head part of the outer layer catheter at intervals; the head of the first handle is sleeved at the tail of the outer catheter, and a handle clamping groove is formed in the tail of the first handle; the head of the second handle is sleeved at the tail of the inner-layer catheter, and the head of the second handle is inserted in the handle clamping groove. The bending angle of the controllable bending catheter can be changed along with the distance between the two handles, so that the catheter can flexibly pass through blood vessels or other lacunas and smoothly reach a lesion.
Description
Technical Field
The invention relates to a controllable bending catheter.
Background
The main function of the curved catheter is to enter a blood vessel or other cavities in a human body under the guidance and support of a guide wire, smoothly reach a lesion site, stretch into other tools in the lesion site or inject liquid medicine to finish observation or treatment of the lesion site, but at present, the bending angle of the curved catheter sold in the market is not adjustable or is not easy to adjust, so that the using effect of the curved catheter is affected.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a controllable bent catheter, wherein the bending angle can be changed along with the distance between two handles, so that the catheter can flexibly pass through a blood vessel or other lacuna to smoothly reach a lesion.
The technical scheme for achieving the purpose is as follows: a steerable catheter comprising an outer catheter, an inner catheter, a first handle having a through hole, and a second handle having a through hole, wherein:
the inner layer catheter and the outer layer catheter are coaxially arranged in sequence from inside to outside, the head end of the inner layer catheter is connected with the head end of the outer layer catheter, and the tail end of the inner layer catheter extends to the outside of the outer layer catheter;
a plurality of grooves are uniformly formed in the outer wall surface of the head part of the outer layer catheter at intervals;
the head of the first handle is sleeved at the tail of the outer catheter, and a handle clamping groove is formed in the tail of the first handle;
An annular boss is arranged on the inner wall surface of the first handle, the annular boss is positioned at the bottom of the handle clamping groove, and the tail end of the outer layer catheter is abutted against the annular boss;
The head of the second handle is sleeved at the tail of the inner-layer catheter, and the head of the second handle is inserted in the handle clamping groove;
A convex rib is arranged on the outer wall surface of the head part of the second handle along the axial direction of the outer wall surface, a convex rib clamping groove matched with the convex rib is arranged on the inner wall surface of the handle clamping groove, and the convex rib is clamped in the convex rib clamping groove;
An annular step surface is arranged on the inner wall surface of the second handle, and the tail end of the inner-layer catheter is in contact with the annular step surface.
In the above-mentioned controllable bending catheter, among the plurality of grooves, a first groove is adjacent to the head end of the outer layer catheter, and the distance between the first groove and the head end of the outer layer catheter is 2 mm-6 mm;
The distance between every two adjacent grooves is 2 mm-4 mm.
The controllable bending catheter is characterized in that a layer of woven mesh is arranged on the inner wall surface of the inner-layer catheter.
The controllable bending catheter, wherein the woven mesh adopts a spiral line.
The controllable bent catheter is characterized in that a female luer connector is arranged at the tail end of the second handle.
The controllable bent catheter is characterized in that the convex ribs and the convex rib clamping grooves are installed in a clearance fit mode.
The controllable bending catheter, wherein the inner-layer catheter is made of a composite material.
The bending angle of the controllable bending catheter can be changed along with the distance between the head end of the second handle and the bottom of the handle clamping groove of the first handle, so that the catheter can flexibly pass through blood vessels or other lacuna and smoothly reach a lesion.
Drawings
FIG. 1 is a schematic view of the overall structure (straight state) of a controllable curved catheter according to the present invention;
FIG. 2 is a schematic illustration of the connection of an outer catheter to an inner catheter of a buckling controllable catheter according to the present invention;
FIG. 3 is an enlarged schematic view of a portion A of FIG. 2;
FIG. 4 is a schematic illustration of the connection of a first handle to a second handle of a steerable catheter in accordance with the present invention;
FIG. 5 is a partially enlarged schematic illustration of portion B of FIG. 4;
fig. 6 is a view showing a state of use (bent state) of the steerable catheter of the present invention.
Detailed Description
In order to enable those skilled in the art to better understand the technical scheme of the present invention, the following detailed description is provided with reference to the accompanying drawings:
Referring to fig. 1 to 5, a bending-controllable catheter according to a preferred embodiment of the present invention comprises an outer catheter 1, an inner catheter 2, a first handle 3 having a through hole and a second handle 4 having a through hole.
The inner layer catheter 2 and the outer layer catheter 1 are coaxially arranged in sequence from inside to outside, and the head end of the inner layer catheter 2 is connected with the head end of the outer layer catheter 1, and the tail end of the inner layer catheter 2 extends to the outside of the outer layer catheter 1.
A plurality of grooves 11 are uniformly formed in the outer wall surface of the head part of the outer layer catheter 1 at intervals, wherein a first groove is adjacent to the head end of the outer layer catheter 1, and the distance between the first groove and the head end of the outer layer catheter 1 is 2-6 mm; the distance between every two adjacent grooves 11 is 2mm to 4mm.
The inner layer catheter 2 is made of a composite material, a layer of woven mesh is arranged on the inner wall surface of the inner layer catheter 2, and the woven mesh adopts a spiral line.
The head of the first handle 3 is sleeved at the tail of the outer catheter 1, and the tail of the first handle 3 is provided with a handle clamping groove 31; the inner wall surface of the first handle 3 is provided with an annular boss 32, the annular boss 32 is positioned at the bottom of the handle clamping groove 31, and the tail end of the outer catheter 1 is abutted against the annular boss 32.
The head of the second handle 4 is sleeved at the tail of the inner catheter 2, and the head of the second handle 4 is inserted in the handle clamping groove 31; the outer wall surface of the head of the second handle 4 is provided with a convex rib 41 along the axial direction, the inner wall surface of the handle clamping groove 31 is provided with a convex rib clamping groove 33 matched with the convex rib 41, the convex rib 41 is clamped in the convex rib clamping groove 33, and the convex rib 41 and the convex rib clamping groove 33 are installed in a clearance fit manner, so that the first handle 3 and the second handle 4 can be prevented from rotating mutually.
The inner wall surface of the second handle 4 is provided with an annular step surface, and the tail end of the inner layer catheter 2 is abutted against the annular step surface. The rear end of the second handle 4 is provided with a female luer fitting 43.
Referring to fig. 1 and 6, the controllable bending catheter of the present invention realizes controllable bending of the catheter through two layers of catheters and two handles when in use, and the specific working principle is as follows: the initial state of the controllable bending catheter is a straight state, the contact part of the first handle 3 and the second handle 4 is a convex rib clamping groove 33 and a convex rib 41, and the convex rib 41 slides along the convex rib clamping groove 33. The second handle 4 is pushed forward for a certain distance, the position of the first handle 3 is kept still, the joint of the two handles moves forward, namely the convex rib 41 moves forward along the convex rib clamping groove 33, the inner-layer catheter 2 is stressed and is wanted to bend, but because the head end of the outer-layer catheter 1 is connected with the head end of the inner-layer catheter 2, and the outer-layer catheter 1 only has a plurality of grooves 11 on the head, and the catheters at other parts have no gaps, the whole controllable bending catheter can start to bend at the grooves 11, at the moment, the catheter can bend upwards, the gap at the bottom of the grooves expands, and the bending angle of the catheter can change along with the forward and backward movement of the position of the second handle 4. For example, as the second handle 4 is moved forward, the entire steerable catheter begins to bend upward. The bending angle becomes larger as the forward moving distance of the second handle 4 increases; the position of the first handle 3 is kept still, the second handle 4 is moved backwards, and the whole controllable curved catheter gradually returns to the original state.
The controllable bending catheter of the invention comprises the following working procedures:
step 1: the catheter is in a straight state, and the two handles are connected together through the convex ribs 41 and the convex rib clamping grooves 33;
Step 2: keeping the position of the first handle 3 unchanged, the second handle 4 moves forward and the catheter starts to bend upwards. The bending angle varies with the moving distance of the second handle 4;
Step 3: the first handle 3 remains stationary and the second handle 4 moves backwards and the catheter gradually returns to the original state.
According to the controllable bending catheter disclosed by the invention, the equidistant grooves 11 are formed in the head part of the outer catheter 1, the inner catheter 2 is stressed due to the movement of the second handle 4, but the two catheters are connected together at the head end, and the bottoms of the grooves are expanded when the catheter is stressed due to the grooves in the head part of the outer catheter, so that the catheter is bent, the bending angle is changed along with the distance between the two handles, namely, the bending angle is changed along with the distance between the head end of the second handle 4 and the bottom of the handle clamping groove 31 of the first handle 3, so that the catheter can flexibly pass through blood vessels or other lacunas and smoothly reach a lesion.
In summary, the bending angle of the controllable bending catheter can be changed along with the distance between the two handles, so that the catheter can flexibly pass through blood vessels or other lacuna to smoothly reach a lesion.
It will be appreciated by persons skilled in the art that the above embodiments are provided for illustration only and not for limitation of the invention, and that variations and modifications of the above described embodiments are intended to fall within the scope of the claims of the invention as long as they fall within the true spirit of the invention.
Claims (7)
1. A steerable catheter comprising an outer catheter, an inner catheter, a first handle having a through hole, and a second handle having a through hole, wherein:
the inner layer catheter and the outer layer catheter are coaxially arranged in sequence from inside to outside, the head end of the inner layer catheter is connected with the head end of the outer layer catheter, and the tail end of the inner layer catheter extends to the outside of the outer layer catheter;
a plurality of grooves are uniformly formed in the outer wall surface of the head part of the outer layer catheter at intervals;
the head of the first handle is sleeved at the tail of the outer catheter, and a handle clamping groove is formed in the tail of the first handle;
An annular boss is arranged on the inner wall surface of the first handle, the annular boss is positioned at the bottom of the handle clamping groove, and the tail end of the outer layer catheter is abutted against the annular boss;
The head of the second handle is sleeved at the tail of the inner-layer catheter, and the head of the second handle is inserted in the handle clamping groove;
A convex rib is arranged on the outer wall surface of the head part of the second handle along the axial direction of the outer wall surface, a convex rib clamping groove matched with the convex rib is arranged on the inner wall surface of the handle clamping groove, and the convex rib is clamped in the convex rib clamping groove;
An annular step surface is arranged on the inner wall surface of the second handle, and the tail end of the inner-layer catheter is in contact with the annular step surface.
2. The steerable catheter of claim 1, wherein a first channel of the plurality of channels is adjacent the head end of the outer catheter and a distance between the first channel and the head end of the outer catheter is between 2mm and 6mm;
The distance between every two adjacent grooves is 2 mm-4 mm.
3. A buckling-controllable catheter according to claim 1, wherein the inner wall surface of the inner catheter is provided with a layer of woven mesh.
4. A steerable catheter according to claim 3, wherein the mesh is a spiral.
5. A steerable catheter, according to claim 1, wherein the tail end of the second handle is provided with a female luer fitting.
6. A controlled deflection conduit according to claim 1, wherein the ribs are mounted in a clearance fit with the rib detents.
7. A buckling-controllable catheter according to claim 1, wherein the inner catheter is made of a composite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810217392.5A CN108201653B (en) | 2018-03-16 | 2018-03-16 | Controllable curved pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810217392.5A CN108201653B (en) | 2018-03-16 | 2018-03-16 | Controllable curved pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108201653A CN108201653A (en) | 2018-06-26 |
| CN108201653B true CN108201653B (en) | 2024-05-31 |
Family
ID=62606921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810217392.5A Active CN108201653B (en) | 2018-03-16 | 2018-03-16 | Controllable curved pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108201653B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202020777U (en) * | 2011-03-31 | 2011-11-02 | 先健科技(深圳)有限公司 | Adjustable bent catheter |
| CN102921089A (en) * | 2012-11-07 | 2013-02-13 | 南通伊诺精密塑胶导管有限公司 | Bending catheter with controllable head and used for interventional therapy |
| CN103096964A (en) * | 2010-09-23 | 2013-05-08 | 奥林巴斯医疗株式会社 | Bendable catheter |
| CN104958824A (en) * | 2015-07-30 | 2015-10-07 | 湖南埃普特医疗器械有限公司 | Guiding catheter |
| CN107684657A (en) * | 2017-08-17 | 2018-02-13 | 陈翔 | A kind of double-layer bend microtubular and its application method for artery chronic Occlusion interventional procedure |
| CN208809276U (en) * | 2018-03-16 | 2019-05-03 | 上海康德莱医疗器械股份有限公司 | A kind of controllable curved conductor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10369328B2 (en) * | 2013-02-19 | 2019-08-06 | Beth Israel Deaconess Medical Center, Inc. | Adjustable stiffness catheter |
-
2018
- 2018-03-16 CN CN201810217392.5A patent/CN108201653B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103096964A (en) * | 2010-09-23 | 2013-05-08 | 奥林巴斯医疗株式会社 | Bendable catheter |
| CN202020777U (en) * | 2011-03-31 | 2011-11-02 | 先健科技(深圳)有限公司 | Adjustable bent catheter |
| CN102921089A (en) * | 2012-11-07 | 2013-02-13 | 南通伊诺精密塑胶导管有限公司 | Bending catheter with controllable head and used for interventional therapy |
| CN104958824A (en) * | 2015-07-30 | 2015-10-07 | 湖南埃普特医疗器械有限公司 | Guiding catheter |
| CN107684657A (en) * | 2017-08-17 | 2018-02-13 | 陈翔 | A kind of double-layer bend microtubular and its application method for artery chronic Occlusion interventional procedure |
| CN208809276U (en) * | 2018-03-16 | 2019-05-03 | 上海康德莱医疗器械股份有限公司 | A kind of controllable curved conductor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108201653A (en) | 2018-06-26 |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Country or region after: China Address after: 201812 Jinyuan Road No. 925, Jiading District, Shanghai City, 2 Applicant after: Shanghai Yingtai Medical Equipment Co.,Ltd. Address before: 201812 Jinyuan Road No. 925, Jiading District, Shanghai City, 2 Applicant before: SHANGHAI KINDLY MEDICAL INSTRUMENTS Co.,Ltd. Country or region before: China |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |