CN215937314U - A confocal probe connecting device that is used for pancreas bile duct to lead through seal wire - Google Patents
A confocal probe connecting device that is used for pancreas bile duct to lead through seal wire Download PDFInfo
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- CN215937314U CN215937314U CN202122038389.7U CN202122038389U CN215937314U CN 215937314 U CN215937314 U CN 215937314U CN 202122038389 U CN202122038389 U CN 202122038389U CN 215937314 U CN215937314 U CN 215937314U
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- guide tube
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- confocal probe
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- 239000000523 sample Substances 0.000 title claims abstract description 58
- 210000000496 pancreas Anatomy 0.000 title abstract description 7
- 210000000013 bile duct Anatomy 0.000 title description 13
- 238000003825 pressing Methods 0.000 claims description 7
- 238000007459 endoscopic retrograde cholangiopancreatography Methods 0.000 abstract description 5
- 238000007334 copolymerization reaction Methods 0.000 abstract 4
- 230000001737 promoting effect Effects 0.000 abstract 1
- 230000003902 lesion Effects 0.000 description 14
- 238000003384 imaging method Methods 0.000 description 6
- 230000003211 malignant effect Effects 0.000 description 4
- 210000001519 tissue Anatomy 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 206010051341 Bile duct stenosis Diseases 0.000 description 2
- 238000001574 biopsy Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000799 fluorescence microscopy Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 208000017283 Bile Duct disease Diseases 0.000 description 1
- 206010004593 Bile duct cancer Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 208000026900 bile duct neoplasm Diseases 0.000 description 1
- 210000003445 biliary tract Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 208000006990 cholangiocarcinoma Diseases 0.000 description 1
- 238000013189 cholangiography Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000002594 fluoroscopy Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000004877 mucosa Anatomy 0.000 description 1
- 210000004400 mucous membrane Anatomy 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000004393 prognosis Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 230000002966 stenotic effect Effects 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
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Abstract
The utility model discloses a confocal probe connecting device guided by a guide wire for a pancreaticobiliary duct, and belongs to the technical field of confocal micro-endoscopes. Including seal wire, confocal probe and connector, the connector includes two first guiding tubes and the second guiding tube that is parallel to each other, and seal wire and first guiding tube sliding connection, confocal probe are fixed in the second guiding tube. Under ERCP operation operating personnel can guide the seal wire to narrow pancreas biliary duct, and couple together seal wire and copolymerization burnt probe with a connector to, first guide tube and second guide tube in the connector are parallel to each other, fix the copolymerization burnt probe in the second guide tube again, so operating personnel can advance along the length direction of seal wire when promoting the copolymerization burnt probe, thereby can send into the pancreas biliary duct with the copolymerization burnt probe very conveniently fast. Compared with the prior art, the guide wire has smaller size, is more convenient to use under the ERCP, and has lower cost and simpler operation.
Description
Technical Field
The utility model belongs to the field of confocal micro-endoscopes, and particularly relates to a confocal probe connecting device guided by a guide wire and used for pancreaticobiliary ducts.
Background
The stenotic lesion is a common disease of a bile duct system and is divided into benign lesion and malignant lesion, wherein the main cause of the malignant lesion is bile duct cancer, and the accurate diagnosis of the property of the bile duct stenosis is important for subsequent treatment, so that the prognosis of a patient is influenced, and unnecessary surgical operations are avoided. However, diagnosis of the nature of biliary strictures presents major difficulties.
The property of pathological changes is difficult to determine sometimes through simple cholangiography and tomography examination, and the positive rate of bile duct biopsy under traditional cholangiocyte brush and fluoroscopy is low, so that the clinical requirement is difficult to meet. The change of the mucous membrane of the wall of the bile duct can be directly observed through the oral choledochoscope, and accurate biopsy under direct vision is carried out, thereby providing help for diagnosing the property of bile duct stenosis. However, the conventional oral choledochoscope consists of a mother endoscope and a son endoscope, and requires 2 experienced operators to cooperate, so that the process is complicated, and the instruments are expensive and easy to damage, which greatly limits the wide application of the oral choledochoscope in clinic.
The Spyglass digital peroral choledochoscope (hereinafter referred to as Spyglass) can be directly inserted into a bile duct from a common duodenoscope forceps channel, can be operated by a single person, is relatively simple and convenient, greatly improves the image quality, can clearly display the mucosa form in the bile duct, and has high accuracy for distinguishing malignant lesions and benign lesions of the bile duct. However, SpyGlass is expensive in selling price, only a very small amount of SpyGlass is equipped in hospitals at present, and the SpyGlass probe is expensive in selling price and disposable, so that the use cost is extremely high, and common family patients are difficult and easy to bear, and the SpyGlass cannot be widely popularized and used clinically due to the reasons.
The confocal micro-endoscope has lower use cost than Spyglass, can easily observe a cell structure with a specific depth in a thick tissue, is a new technology combining an endoscope technology and a confocal technology, can observe cells in various tissues, realizes accurate real-time observation of the tissue cells, and improves the detection rate of malignant lesions, particularly early cancers. However, the field of view of the confocal micro-endoscope is usually small, other endoscopes with large field of view are often used when the confocal micro-endoscope travels in the body lumen, the lumen of the pancreatic bile duct is narrow, and the endoscope providing field of view guidance cannot enter, so that the clinical application of the confocal micro-endoscope in the pancreatic bile duct is limited.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects or the improvement requirements of the prior art, the utility model provides a confocal probe connecting device guided by a guide wire for a pancreatic-biliary duct, and aims to solve the technical problem that the probe of a confocal micro endoscope in the prior art is difficult to be positioned to a narrow pancreatic-biliary duct inner focus to realize focus detection.
In order to achieve the above object, according to one aspect of the present invention, there is provided a guide wire guided confocal probe connection device for pancreaticobiliary tract, comprising a guide wire, a confocal probe, and a connector, wherein the connector comprises a first guide tube and a second guide tube which are parallel to each other, the guide wire is slidably connected with the first guide tube, and the confocal probe is fixed in the second guide tube.
Through the technical scheme, under the ERCP operation, an operator can guide the guide wire to the narrow pancreatic bile duct inner focal part, the guide wire and the confocal probe are connected through one connector, the first guide pipe and the second guide pipe in the connector are parallel to each other, and then the confocal probe is fixed in the second guide pipe, so that the operator can advance along the length direction of the guide wire when pushing the confocal probe, so that the confocal probe can be conveniently and quickly sent into the pancreatic bile duct, and the focal part can be quickly and accurately reached. Compare with the guide of scope with the help of the big field of vision in the prior art, the seal wire size is littleer, and it is more convenient to use under ERCP to can get into in the narrower pancreas bile duct, compare with Spyglass among the prior art, the cost of this device is lower, compare with the peroral biliary tract mirror among the prior art, this application operation is simpler, and confocal probe can obtain more accurate fluorescence imaging, more is favorable to the diagnostic rate of pancreas bile duct disease.
Preferably, the inner diameter of the second guide tube is larger than the maximum outer diameter of the confocal probe, and a pressing member for pressing the confocal probe is movably arranged on the side wall of the second guide tube.
Preferably, a threaded hole is formed in the side wall of the second guide pipe, and the abutting piece is a bolt in threaded connection with the threaded hole.
Preferably, the inner diameter of the second guide tube and the maximum outer diameter of the confocal probe meet the dimensional tolerance fit condition.
Preferably, the first guide tube is integrally formed with the second guide tube.
Preferably, the inner diameter of the first guide tube is larger than the outer diameter of the guide wire.
Preferably, the outer walls of the first guide pipe and the second guide pipe are both circumferential.
Preferably, the cross section of the first guide tube is in the shape of an open ring, and the width of the opening is smaller than the diameter of the guide wire.
Preferably, the first guide tube and the second guide tube are the same length.
Drawings
FIG. 1 is a schematic cross-sectional view of the device of the present application;
FIG. 2 is a schematic diagram of a connector configuration in some embodiments;
fig. 3 is a schematic diagram of a connector structure in other embodiments.
In the figure, 1, guide wire; 2. a connector; 21. a first guide tube; 22. a second guide tube; 23. a threaded hole; 24. a bolt; 3. a confocal probe; 31. an imaging objective lens; 32. an optical fiber bundle.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1 and fig. 2, the present invention provides a confocal probe device guided by a guide wire for pancreaticobiliary tract, comprising a guide wire 1, a confocal probe 3 and a connector 2, wherein the connector 2 comprises a first guide tube 21 and a second guide tube 22 which are parallel to each other, the guide wire 1 is slidably connected with the first guide tube 21, and the confocal probe 3 is fixed in the second guide tube 22.
Because the guide wire 1 is in sliding connection with the connector 2, when an operator operates the guide wire 1 to advance/retreat in the using process, the guide wire 1 can slide in the connector 2, and the position of the connector 2 is kept still; the confocal probe 3 and the connector 2 are in a fixed relation, so that when an operator operates the confocal probe 3 to move forwards or backwards, the operator can drive the connector 2 to move forwards or backwards together; and because the first guide tube 21 and the second guide tube 22 for connecting the guide wire 1 and the confocal probe 3 are parallel to each other, when the confocal probe 3 is operated to advance/retreat after the guide wire 1 is controlled to reach the focus under the ERCP operation, the path is along the length direction of the guide wire 1, so that the focus cell can be conveniently and accurately reached to the focus to perform fluorescence imaging. This application adopts seal wire 1 to guide confocal probe 3, compares with leading with big field of vision scope among the prior art, and the diameter of seal wire 1 is littleer, can enter into narrow pancreas biliary duct more conveniently.
In some embodiments, the inner diameter of the second guide tube 22 is larger than the maximum outer diameter of the confocal probe 3, a pressing member for pressing the confocal probe 3 is movably disposed on the side wall of the second guide tube 22, and the confocal probe 3 is pressed in the inner wall of the second guide tube 22 by the pressing member, so as to fix the confocal probe 3. On the contrary, when the abutting member and the confocal probe 3 are relatively loosened, the confocal probe 3 can be taken out from the second guide tube 22
Specifically, the side wall of the second guide tube 22 is provided with a threaded hole 23, the fastening member is a bolt 24 in threaded connection with the threaded hole 23, the confocal probe 3 comprises an optical fiber bundle 32 and an imaging objective lens 31, the imaging objective lens 31 is inserted into the second guide tube 22, and then the bolt 24 is rotated to fasten the imaging objective lens 31, so that the confocal probe 3 can be fixed and is convenient to operate. Further, a rubber pad or the like may be fixed to a side of the bolt 24 close to the confocal probe 3 to increase friction, and the imaging objective lens 31 may be protected; alternatively, the bolt 24 may be made of plastic, rubber, or the like.
In other embodiments, the inner diameter of the second guide tube 22 and the maximum outer diameter of the confocal probe 3 satisfy a dimensional tolerance fit condition, specifically: the maximum tolerance of the outer diameter of the confocal probe 3 is +0.00mm, and the tolerance of the inner diameter of the second guide tube 22 is +0.03mm, so that the confocal probe 3 can be directly inserted into the second guide tube 22 to realize fixation, and the confocal probe 3 can also be directly pulled out of the second guide tube 22.
The confocal probe 3 can be repeatedly used for a certain number of times after being disinfected, the connector 2 can be used as disposable consumables, and the confocal probe 3 can be directly discarded after being taken out of the connector 2, so that the confocal probe 3 can be disinfected, and the clinical use environment is very friendly.
Further, the first guide tube 21 and the second guide tube 22 are integrally formed, and the connector 2 is used as a disposable consumable, such an integrally formed manner is convenient for mass production and transportation, and the yield can be higher.
In particular, the inner diameter of the first guide tube 21 is greater than the outer diameter of the guide wire 1, which ensures a better relative sliding between the guide wire 1 and the first guide tube 21.
In some embodiments, the outer walls of the first guide tube 21 and the second guide tube 22 are both circular, and the circular arrangement can ensure that the cross-sectional area of the whole connector 2 is minimum, thereby facilitating the travel in a narrow body lumen, and effectively avoiding the occurrence of scratching tissues and the like.
In other embodiments, as shown in fig. 3, the first guide tube 21 has a cross-section in the form of an open loop, the width of the opening being less than the diameter of the guidewire 1. In this way, the guide wire 1 can be snapped directly into the first guide tube 21 by the elasticity at the opening of the first guide tube 21, or conversely the guide wire 1 can be removed from the first guide tube 21 by direct application of force through this opening.
Further, the first guide tube 21 and the second guide tube 22 have the same length, and if the end of the first guide tube 21 close to the lesion is longer than the end of the second guide tube 22 close to the lesion, when the confocal probe 3 drives the connector 2 to travel along the guide wire 1 to the lesion, the connector is limited by the length of the first guide tube 21, and the confocal probe 3 cannot approach the surface of the lesion, which may affect confocal microscopic imaging; if the end of the first guiding tube 21 close to the lesion is shorter than the end of the second guiding tube 22 close to the lesion, the first guiding tube 21 is separated from the end of the guiding wire 1 when the confocal probe 3 drives the connector 2 to move along the guiding wire 1 to the lesion, thereby affecting the subsequent operation. Although the above-mentioned problem can be avoided from the installation direction, that is, the flush side of the first guide tube 21 and the second guide tube 22 is close to the focus direction, and the uneven side is close to the operation direction for installation, through the above-mentioned arrangement of the present application, the installation direction can be arbitrarily selected, thereby saving time and effort and increasing the fault tolerance rate.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the utility model, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. A confocal probe connecting device for pancreaticobiliary ducts guided by guide wires is characterized by comprising guide wires, a confocal probe and a connector, wherein the connector comprises a first guide tube and a second guide tube which are parallel to each other, the guide wires are in sliding connection with the first guide tubes, and the confocal probe is fixed in the second guide tube.
2. The device of claim 1, wherein the inner diameter of the second guiding tube is larger than the maximum outer diameter of the confocal probe, and a pressing member for pressing against the confocal probe is movably disposed on the side wall of the second guiding tube.
3. The device of claim 2, wherein a threaded hole is formed in a side wall of the second guide tube, and the abutting member is a bolt threadedly coupled to the threaded hole.
4. The device of claim 1, wherein a dimensional tolerance fit condition is satisfied between an inner diameter of the second guide tube and a maximum outer diameter of the confocal probe.
5. The device of claim 2 or 4, wherein the first guide tube is integrally formed with the second guide tube.
6. The device of claim 5, wherein an inner diameter of the first guide tube is greater than an outer diameter of the guidewire.
7. The device of claim 6, wherein the outer walls of the first and second guide tubes are circumferential.
8. The device of claim 6, wherein the first guide tube is annular in cross-section with an opening having a width less than a diameter of the guidewire.
9. The device of claim 1, wherein the first guide tube is the same length as the second guide tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122038389.7U CN215937314U (en) | 2021-08-26 | 2021-08-26 | A confocal probe connecting device that is used for pancreas bile duct to lead through seal wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122038389.7U CN215937314U (en) | 2021-08-26 | 2021-08-26 | A confocal probe connecting device that is used for pancreas bile duct to lead through seal wire |
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| Publication Number | Publication Date |
|---|---|
| CN215937314U true CN215937314U (en) | 2022-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122038389.7U Active CN215937314U (en) | 2021-08-26 | 2021-08-26 | A confocal probe connecting device that is used for pancreas bile duct to lead through seal wire |
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| CN (1) | CN215937314U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024169114A1 (en) * | 2023-02-17 | 2024-08-22 | 南微医学科技股份有限公司 | Connecting device and endoscope connecting system |
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2021
- 2021-08-26 CN CN202122038389.7U patent/CN215937314U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024169114A1 (en) * | 2023-02-17 | 2024-08-22 | 南微医学科技股份有限公司 | Connecting device and endoscope connecting system |
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Address after: Building 1, School of Biomedical Engineering, Hainan University, No. 16 Zhenzhou Road, Yazhou District, Sanya City, Hainan Province, 572000, D304-18 Patentee after: Zhiwei Medical Technology (Sanya) Co.,Ltd. Country or region after: China Address before: 572000 room 904c, 9 / F, Nanfan Zhongchuang center, yazhouwan science and Technology City, Yazhou District, Sanya City, Hainan Province Patentee before: Jingwei Shida medical technology (Sanya) Co.,Ltd. Country or region before: China |
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Effective date of registration: 20240307 Address after: No. E02, Floor 1-3, Building E1E2, Donghu High tech Creative City, south of Phoenix Avenue, wutong Lake New District, Liangzihu District, Ezhou City, Hubei Province 436060 Patentee after: Jingwei Shida Medical Technology (Hubei) Co.,Ltd. Country or region after: China Address before: Building 1, School of Biomedical Engineering, Hainan University, No. 16 Zhenzhou Road, Yazhou District, Sanya City, Hainan Province, 572000, D304-18 Patentee before: Zhiwei Medical Technology (Sanya) Co.,Ltd. Country or region before: China |
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