CN202490002U - Guiding catheter - Google Patents
Guiding catheter Download PDFInfo
- Publication number
- CN202490002U CN202490002U CN2012200844571U CN201220084457U CN202490002U CN 202490002 U CN202490002 U CN 202490002U CN 2012200844571 U CN2012200844571 U CN 2012200844571U CN 201220084457 U CN201220084457 U CN 201220084457U CN 202490002 U CN202490002 U CN 202490002U
- Authority
- CN
- China
- Prior art keywords
- tube
- guide catheter
- guide
- hollow
- handle
- 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
Links
- 239000002184 metal Substances 0.000 claims abstract description 20
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 210000003695 paranasal sinus Anatomy 0.000 abstract description 11
- 210000001214 frontal sinus Anatomy 0.000 abstract description 7
- 210000001180 ethmoid sinus Anatomy 0.000 abstract description 5
- 210000003718 sphenoid sinus Anatomy 0.000 abstract description 5
- 238000005452 bending Methods 0.000 abstract description 2
- 201000009890 sinusitis Diseases 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000002324 minimally invasive surgery Methods 0.000 description 3
- 210000001944 turbinate Anatomy 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000004877 mucosa Anatomy 0.000 description 2
- 210000003928 nasal cavity Anatomy 0.000 description 2
- 210000000492 nasalseptum Anatomy 0.000 description 2
- 238000002271 resection Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 241000321096 Adenoides Species 0.000 description 1
- 206010020880 Hypertrophy Diseases 0.000 description 1
- 206010061213 Iatrogenic injury Diseases 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- 208000000592 Nasal Polyps Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 210000002534 adenoid Anatomy 0.000 description 1
- 201000003462 adenoid hypertrophy Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000000916 dilatatory effect Effects 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 210000004086 maxillary sinus Anatomy 0.000 description 1
- 201000008836 maxillary sinusitis Diseases 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
- 208000016366 nasal cavity polyp Diseases 0.000 description 1
- 210000001331 nose Anatomy 0.000 description 1
- 210000004279 orbit Anatomy 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 238000011458 pharmacological treatment Methods 0.000 description 1
- 206010039083 rhinitis Diseases 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 230000028327 secretion Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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- Media Introduction/Drainage Providing Device (AREA)
- Surgical Instruments (AREA)
Abstract
A guiding catheter comprises a guiding tube which is provided with a hollow through hole. One end of the guiding tube is provided with a bend, and the other end of the guiding tube is connected with a handle which is provided with a hollow through hole. The guiding tube comprises a hollow inner tube, an outer tube wrapped at the outer side of the hollow inner tube, and a metal support tube wrapped at the outer side of the outer tube. The length of the hollow inner tube is equal to that of the outer tube, and the length of the metal support tube is smaller than that of the outer tube. The guiding catheter is simple in structure, convenient to fabricate and mold, and low in cost. The bending angle of the bend enables the guiding catheter to easily guide frontal sinus, ethmoid sinus, sphenoid sinus and other nasal sinus cavities with different positions.
Description
Technical Field
The utility model relates to a device for guiding in a cavity for minimally invasive surgery of nasal sinus surgery, in particular to a guide catheter.
Background
The nasal cavity and sinuses are located below the cranium, above the throat and mouth, and between the two eye sockets. The paranasal sinuses include frontal sinuses, ethmoid sinuses, sphenoid sinuses and upper frontal sinuses, which are 4 cavities with different positions, and the pathological changes of the nasal cavity and the paranasal sinuses are usually spread to nearby tissues, thereby causing various complications. Usually, sinusitis has purulent secretion in nasal passages or nasal cleft, and thickened or polypoid mucosa in middle turbinate and middle nasal passages. It can be used for treating sinusitis and suppurative maxillary sinusitis by maxillary sinus puncture. For patients with mechanical obstruction factors such as nasal polyp, middle turbinate hypertrophy, nasal septum curvature, adenoid hypertrophy and the like, inflammation is difficult to cure due to obstruction of ventilation and drainage of nasal sinuses, and surgical therapies such as nasal polypectomy, turbinate resection in the nose, nasal septum correction, adenoid resection and the like can be adopted, and the nasal endoscope minimally invasive surgery is commonly used at present.
For those with sinusitis for which the pharmacological treatment is not ideal, the most common and effective treatment is currently the "functional" endoscopic sinus patency procedure, aimed at reestablishing sinus ventilation and drainage through the natural sinus opening. The current operation mode is difficult to achieve the 'functional' sinus opening operation in the true sense, the injury of mucosa of a sinus drainage channel in the operation, the formation of scar tissues after the operation, the bleeding which is difficult to control in the operation, the iatrogenic injury caused by the operation and the like are still inevitable.
CN101563019a discloses a nasal sinus surgical instrument for nasal endoscope minimally invasive surgery, which is used in combination with a guide catheter passing through a metal dilating catheter and a balloon to dilate a blocked nasal sinus for treating rhinitis and sinusitis. However, this patent application is only a schematic illustration, and its specific structure is not described in detail, so that it is still difficult for those skilled in the art to directly utilize it.
SUMMERY OF THE UTILITY MODEL
The utility model provides a guide catheter, which comprises a guide catheter with a hollow through hole, wherein one end of the guide catheter is provided with an elbow, and the other end of the guide catheter is connected with a handle with a hollow through hole;
the guide tube comprises a hollow inner tube, an outer tube and a metal supporting tube, wherein the outer tube is wrapped on the outer side of the hollow inner tube, the metal supporting tube is wrapped on the outer side of the outer tube, the length of the hollow inner tube is the same as that of the outer tube, and the length of the metal supporting tube is smaller than that of the outer tube.
Preferably, the outer side of the metal supporting tube is covered with an outer layer protective film.
Preferably, the bend has a bend angle of 0 °, 30 °, 70 °, 90 °, 110 °.
Preferably, the handle is a resin injection molded part having two wings.
Preferably, the handle is provided with a quick threaded interface.
Preferably, the elbow is provided with a guide portion made of a flexible resin material.
Preferably, the hollow inner tube and the outer tube are bonded by an adhesive.
Preferably, one end of the metal supporting pipe is inserted into the hollow through hole of the handle and is bonded by an adhesive.
Preferably, a joint protective sleeve is arranged at the joint of the guide tube and the handle.
The utility model provides a pair of guide pipe, simple structure, the machine-shaping of being convenient for, low cost, the bend angle that its elbow has moreover makes the nasal sinus chamber ways such as frontal sinus, ethmoid sinus, sphenoid sinus that the position is different that guide pipe can be convenient lead.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein,
fig. 1 is a schematic view of the working principle of a guide catheter according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of the guide catheter shown in FIG. 1;
FIG. 3 is an enlarged cross-sectional view taken at A in FIG. 2;
fig. 4 is an enlarged cross-sectional view of B in fig. 2.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings. Wherein like parts are given like reference numerals.
The structure and the principle of a guide catheter according to the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic view of the working principle of a guide catheter according to an embodiment of the present invention; as shown in fig. 1, when the guide catheter II is used, the guide catheter II is firstly inserted into an affected part with the cooperation of an endoscope, and then the luminous guide wire III is passed through the sinus balloon catheter I, so that the luminous guide wire III is passed through the sinus or the frontal sinus under the guide of the guide catheter II, and whether the luminous guide wire III is in place is determined according to the position of the light emitted by the luminous part F at the end of the luminous guide wire III through the skin of the patient. When the position of the balloon catheter I is displayed through the skin of the patient by the light emitting part F and the balloon catheter I is pushed along the light emitting guide wire III, the balloon catheter I can be passed through the guide catheter II to reach the affected part to be dilated, and the sinus dilation operation can be performed. Relevant background work and the like reference may be made to CN101563019A described in the background section, which is incorporated herein by reference in its entirety.
FIG. 2 is a schematic structural view of the guide catheter shown in FIG. 1; as shown in fig. 2, the guiding catheter provided by the present invention comprises a guiding tube 1 having a hollow through hole, wherein one end of the guiding tube 1 is provided with an elbow 10, and the other end is connected with a handle 2 having a hollow through hole;
the guide tube 1 comprises a hollow inner tube 11, an outer tube 12 wrapped outside the hollow inner tube 11, and a metal support tube 13 wrapped outside the outer tube 12, wherein the length of the hollow inner tube 11 is the same as that of the outer tube 12, and the length of the metal support tube 13 is smaller than that of the outer tube 12.
Hollow inner tube 11 can adopt smooth soft material, can make like this sinus sacculus pipe I pushes and withdraws from the frictional resistance that receives minimum, outer tube 12 is right inner tube 11 plays the fixed stay effect, metal support tube 13 can protect hollow inner tube 11 with outer tube 12 increases the steerable performance of guide pipe, will in the operation of being convenient for guide pipe propelling movement to affected part chamber way, still be favorable to guaranteeing the appearance of guide pipe does not produce the deformation under the exogenic action.
The elbow 10 enables the guide catheter to conveniently guide different nasal sinus cavities such as frontal sinus, ethmoid sinus, sphenoid sinus, and the like, and the handle 2 enables an operator to conveniently hold the guide catheter.
FIG. 3 is an enlarged cross-sectional view taken at A in FIG. 2; in a preferred embodiment, the metal support tube 13 is covered on the outside with an outer protective film 14, as shown in fig. 3. This protects the metal support tube 13 from corrosive attack by external gases or liquids.
In a preferred embodiment, the bend 10 has a bending angle z of 0 °, 30 °, 70 °, 90 °, 110 °.
FIG. 4 is an enlarged cross-sectional view of FIG. 2 at B; referring to fig. 2 and 4, in a preferred embodiment, the handle 2 is a resin injection molded part having two wings 22. The tab 22 facilitates gripping by an operator.
In a preferred embodiment, the handle 2 is provided with a quick-action screw interface 21. Therefore, the memory handle can be conveniently connected, and other auxiliary equipment can be connected.
Referring to fig. 2 and 3, in a preferred embodiment, the elbow 10 is provided with a guide 15 made of a flexible resin material. This avoids mechanical damage to the patient's lumen during operation.
In a preferred embodiment, the hollow inner tube 11 and the outer tube 12 are bonded by an adhesive. Thus, the production process can be simplified, and the production cost can be reduced. The hollow inner tube 11 and the outer tube 12 can also be fixed by welding, which can also reduce the production cost.
In a preferred embodiment, one end of the metal support tube 13 is inserted into the hollow through hole of the handle 2 and bonded by an adhesive. Therefore, the connection strength of the guide tube 1 and the handle 2 can be increased, and the production process can be simplified.
In a preferred embodiment, a joint protective sleeve 16 is arranged at the joint of the guide tube 1 and the handle 2. Therefore, the connection strength between the metal support tube 13 and the handle 2 can be enhanced, the type of the guide catheter can be marked, and an operator can conveniently and quickly select the proper guide catheter
The utility model provides a pair of guide pipe, simple structure, the machine-shaping of being convenient for, low cost, the bend angle that its elbow has moreover makes the nasal sinus chamber ways such as frontal sinus, ethmoid sinus, sphenoid sinus that the position is different that guide pipe can be convenient lead.
It is to be understood by those skilled in the art that while the present invention has been described in terms of several embodiments, it is not intended that each embodiment cover a separate embodiment. The description is given for clearness of understanding only, and it is to be understood that all matters in the embodiments are to be interpreted as including all technical equivalents which are encompassed by the claims.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes, modifications and combinations that may be made by those skilled in the art without departing from the spirit and principles of the invention should be considered within the scope of the invention.
Claims (9)
1. A guide catheter is characterized by comprising a guide catheter with a hollow through hole, wherein one end of the guide catheter is provided with an elbow, and the other end of the guide catheter is connected with a handle with a hollow through hole;
the guide tube comprises a hollow inner tube, an outer tube and a metal supporting tube, wherein the outer tube is wrapped on the outer side of the hollow inner tube, the metal supporting tube is wrapped on the outer side of the outer tube, the length of the hollow inner tube is the same as that of the outer tube, and the length of the metal supporting tube is smaller than that of the outer tube.
2. Guide catheter in accordance with claim 1, in which the metal support tube is covered on the outside with an outer protective film.
3. Guide catheter according to claim 1, characterized in that the bend angle of the bend is 0 °, 30 °, 70 °, 90 °, 110 °.
4. The guide catheter of claim 1, wherein the handle is a resin injection molded piece having two wings.
5. Guide catheter in accordance with claim 1, in which the handle is provided with a quick-threading interface.
6. The guide catheter of claim 1, wherein the elbow is provided with a guide portion made of a flexible resin material.
7. The guide catheter of claim 1, wherein the hollow inner tube is bonded to the outer tube by an adhesive.
8. The guide catheter of claim 1, wherein one end of the metal support tube is inserted into the hollow through hole of the handle and bonded thereto by an adhesive.
9. The guide catheter of claim 1, wherein a connector protective sheath is provided at the connection of the guide tube and the handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200844571U CN202490002U (en) | 2012-03-08 | 2012-03-08 | Guiding catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200844571U CN202490002U (en) | 2012-03-08 | 2012-03-08 | Guiding catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202490002U true CN202490002U (en) | 2012-10-17 |
Family
ID=46996248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200844571U Expired - Lifetime CN202490002U (en) | 2012-03-08 | 2012-03-08 | Guiding catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202490002U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107205619A (en) * | 2015-01-20 | 2017-09-26 | 奥林巴斯株式会社 | Insert auxiliary implement and Medical Devices |
-
2012
- 2012-03-08 CN CN2012200844571U patent/CN202490002U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107205619A (en) * | 2015-01-20 | 2017-09-26 | 奥林巴斯株式会社 | Insert auxiliary implement and Medical Devices |
| CN107205619B (en) * | 2015-01-20 | 2020-04-07 | 奥林巴斯株式会社 | Insertion aid and medical device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121017 |