CN217040440U - Catheter for implanting multiple stents - Google Patents
Catheter for implanting multiple stents Download PDFInfo
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- CN217040440U CN217040440U CN202220187813.6U CN202220187813U CN217040440U CN 217040440 U CN217040440 U CN 217040440U CN 202220187813 U CN202220187813 U CN 202220187813U CN 217040440 U CN217040440 U CN 217040440U
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- catheter
- guide wire
- guidewire lumen
- wire cavity
- inlet
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Abstract
The utility model discloses a catheter for placing a plurality of supports, which is made of flexible materials and comprises a first guide wire cavity and a second guide wire cavity which are adjacently arranged, wherein the outlet of the first guide wire cavity and the outlet of the second guide wire cavity are both positioned at the far end of the catheter; the inlet of the second guide wire cavity is arranged at the proximal end of the catheter; a first guidewire lumen inlet is disposed between said distal end and said proximal end; the first guidewire lumen is shorter in length than the second guidewire lumen. The utility model discloses a with first seal wire chamber second seal wire chamber export establish in same end, guaranteed that two seal wires succeed in puncturing in same position or all get into the narrow department of bile duct to put into more supports, greatly reduced the degree of difficulty of operation, and improved the quality of operation, reduced operation complication and error's possibility.
Description
Technical Field
The utility model relates to the technical field of medical equipment, concretely relates to a pipe for putting into many supports.
Background
Endoscopic Retrograde Cholangiopancreatography (ERCP) is a technique for displaying the pancreatic duct in a Retrograde manner by injecting a contrast medium through a duodenal papilla cannula under an endoscope, and is the currently accepted gold standard for diagnosing cholangiopancreatography. On the basis of ERCP, intervention treatment such as duodenal papillary sphincterotomy (EST), Endoscopic Nasal Biliary Drainage (ENBD), endoscopic biliary drainage (ERBD) and the like can be performed. The diagnosis accuracy of the ERCP on the bile duct and pancreatic diseases is higher than that of B-ultrasonic and CT, and the ERCP can quickly, safely and effectively treat bile duct calculi, biliary stricture, obstructive jaundice, suppurative cholangitis, biliary pancreatitis, biliary ascariasis and other diseases by a minimally invasive surgery technology during diagnosis. Compared with surgical treatment, ERCP treatment has the advantages of less damage to patients, quick recovery, low cost and less complications, and is especially superior and safer for the elderly and patients who are physically weak and cannot tolerate the surgical operation. The traditional Chinese medicine composition can replace surgical operations to a certain extent for various treatment means such as calculus in bile duct, acute suppurative cholangitis, cholegenic pancreatitis and the like, and is more and more accepted by patients due to safety, rapidness and few complications.
With the development of medical technology, many diseases are treated, operations such as liver transplantation, cholecystectomy and the like are increased, and patients with biliary stenosis after the operation are increased, and in such cases, the biliary stenosis is often diagnosed and treated clinically through ERCP, and one of the treatment methods is to treat the biliary stenosis with a plastic stent, and the plastic stent needs to enter the biliary stenosis through a guide wire. The clinical application shows that the effect of the implantation of a single stent on the bile duct stenosis is not good, however, due to the limitations of the bile duct stenosis and the diameter (4.2mm) of an endoscopic lumen, and the position of the bile duct stenosis and the position of the first guide wire cannot be accurately observed by the duodenoscope used in the operation, it is very difficult to implant more guide wires after the first stent is implanted along the guide wires into the bile duct stenosis, so that more stents cannot be implanted. The problem of how to place multiple stents has plagued surgeons. In other operations requiring to place a plurality of stents, such as puncture drainage operations of pancreatic abscess and pseudocyst, similar problems also exist, and because the puncture points cannot be accurately observed, the consistency of different guide wire puncture points cannot be ensured, and more guide wires and stents cannot be placed.
In fact, even a guide wire with a diameter of only 0.89mm is difficult to pass through the narrow part of the bile duct, and sometimes even needs to be assisted by the transoral choledochoscope. After the first guide wire is placed, the space of an originally narrow place is smaller, and the second guide wire is difficult to place. In order to improve stenosis, the conventional method is to insert a cylindrical balloon through a first guide wire to expand a narrow section, but the expansion easily causes the mucous membrane of the narrow part to be torn, even the blood and the flesh are fuzzy, and the second guide wire is still difficult to insert most of the time, and if the insertion is forcibly tried, the perforation and the tear of the bile duct which is originally weak can be caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at safely and conveniently realizing that a plurality of guide wires are put into in the region where a plurality of supports are required to be put into, such as narrow positions of bile ducts, so that a plurality of supports can be conveniently put into.
In order to achieve the above object, the present invention provides a catheter for inserting multiple stents, which is made of flexible material and comprises a first guide wire cavity and a second guide wire cavity which are adjacently arranged, wherein the outlets of the first guide wire cavity and the second guide wire cavity are both located at the far end of the catheter; the inlet of the second guide wire cavity is arranged at the proximal end of the catheter; a first guidewire lumen inlet is disposed between said distal end and said proximal end; the first guidewire lumen is shorter in length than the second guidewire lumen.
Preferably, the cross section of the inlet of the first guide wire cavity forms an obtuse angle with the outer wall of the catheter.
Preferably, the diameter of the distal end of the catheter is gradually reduced relative to the diameter of other areas of the catheter, and the first guide wire cavity outlet and the second guide wire cavity outlet form a truncated cone together.
Preferably, the distal end of the catheter is radiopaque.
Preferably, the inlet of the first guide wire cavity is provided with an inlet mark, and the outlet of the first guide wire cavity is provided with an outlet mark.
Preferably, the length of the catheter is in the range of 180-220cm, and the length of the first guide wire cavity is in the range of 10-30 cm.
Preferably, the catheter has a diameter in the range of 2.3 to 2.7mm, and the first guidewire lumen and the second guidewire lumen each have a diameter in the range of 1 to 1.2 mm.
Optionally, the catheter is provided with a spacer, and the first guide wire cavity and the second guide wire cavity are formed by separating the spacer.
Preferably, one end of the spacing piece is positioned at the inlet of the first guide wire cavity, and the other end of the spacing piece is positioned at the outlet of the first guide wire cavity.
Preferably, the proximal end of the catheter is connected to a handpiece.
The beneficial effects of the utility model contain:
(1) the outlet of the second guide wire cavity of the first guide wire cavity is arranged at the same end, so that the two guide wires are ensured to be successfully punctured at the same position or enter the narrow part of the bile duct, more supports are placed, the difficulty of the operation is greatly reduced, the quality of the operation is improved, and the possibility of puncture errors is reduced.
(2) The included angle alpha between the cross section of the first guide wire cavity inlet and the outer wall of the catheter is an obtuse angle so as to avoid the injury to the body of a patient when the catheter is drawn out in an operation.
(3) The first guide wire cavity outlet and the second guide wire cavity outlet form a truncated cone together, so that the catheter can conveniently pass through the narrow part of the bile duct or enter the abscess.
(4) The inlet of the first guide wire cavity is provided with an inlet mark, and the outlet of the first guide wire cavity is provided with an outlet mark, so that a guide wire can be conveniently and correctly inserted into the corresponding guide wire cavity in the operation process.
Drawings
Fig. 1 is a schematic view of a catheter according to the present invention;
reference numerals: 11-the exit of the first guidewire lumen; 12-a second guidewire lumen exit; 13-a first guidewire lumen body; 14-a first guidewire lumen inlet; 10-a second guidewire lumen body; 20-a handheld portion.
Detailed Description
The technical solutions of the present invention will be described more clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, the present invention provides a catheter for placement of multiple stents. The catheter is provided with a first guide wire cavity and a second guide wire cavity which can be used for passing through a guide wire. The first guide wire cavity body 13 and the second guide wire cavity body 10 are fixed relatively. The first guide wire cavity outlet 11 and the second guide wire cavity outlet 12 are arranged at the same end of the catheter and are marked as far ends, so that the two guide wires can be ensured to puncture at the same position or pass through the narrow part of the bile duct, and the second guide wire is prevented from puncturing at the wrong position. The inlet of the second guide wire cavity is arranged at the other end of the catheter and is marked as a near end; the first guidewire lumen inlet 14 may be disposed between the two ends of the catheter, rather than at the same end as the second guidewire lumen inlet, to facilitate insertion of the guidewire into the correct guidewire lumen during a surgical procedure, and to facilitate reducing the length of the first guidewire lumen during a surgical procedure, thereby reducing friction and facilitating the performance of the procedure.
In some embodiments, the cross-section of the first guidewire lumen inlet 14 is at an obtuse angle α to the outer wall of the catheter to avoid trauma to the patient during withdrawal of the catheter during surgery.
In some embodiments, the first guidewire lumen exit port 11 and the second guidewire lumen exit port 12 comprise a radiopaque material to determine whether the catheter has passed through a stenosis due to the use of X-rays to determine whether the catheter has entered the desired site during the procedure.
In some embodiments, the diameter of the catheter is reduced at the first and second guidewire lumens 12, and the first and second guidewire lumens 12 and 11 are formed into a truncated cone shape, and further, are formed into a circular truncated cone shape, so that the catheter can pass through the narrow part of the bile duct more conveniently.
In some embodiments, the entry end of the second guidewire lumen is coupled to a handpiece 20 for facilitating a surgical procedure.
In some embodiments, the catheter is provided with a spacer, the first guidewire lumen and the second guidewire lumen are formed by the spacer in a separated manner, one end of the spacer is positioned at the inlet of the second guidewire lumen, and the other end of the spacer is positioned at the outlet of the first guidewire lumen.
In some embodiments, the catheter length ranges from 180-220cm, the first guidewire lumen length ranges from 10-30cm, the catheter diameter ranges from 2.2-2.7mm, and the first and second guidewire lumens are each 1-1.2mm in diameter, as required for ERCP and puncture procedures.
The following description is given with reference to the embodiments and the accompanying drawings.
Example 1
The utility model discloses can be used to the operation to bile duct stenosis department installing support, concrete method is:
s1, firstly, a first guide wire is used to pass through a clamping channel of the duodenoscope and enter a bile duct through a bile duct stenosis;
s2, sleeving the first guide wire cavity outlet 11 of the catheter on a first guide wire, and extending into the narrow part of the bile duct along the first guide wire;
s3, inserting a second guide wire from the entrance of the second guide wire cavity, penetrating the second guide wire cavity and entering the bile duct;
s4, removing the catheter with the first and second guidewire still remaining in the bile duct;
s5, sleeving the first stent on the first guide wire, entering the bile duct along the first guide wire, and completing installation at the narrow part of the bile duct;
s6, taking out the first guide wire;
s7, referring to the steps S2-S6, the first guide wire cavity outlet 11 of the catheter is extended into the narrow part of the bile duct along the second guide wire; more stents are installed in the stenosis of the bile duct by repeated insertion and removal of more guide wires.
Example 2
The utility model discloses still can be used to pancreas abscess and pseudocyst puncture drainage operation, concrete method is:
s1, firstly, a first guide wire is used to pass through a forceps channel of the ultrasonic puncture mirror, the ultrasonic puncture mirror is provided with a camera, a light source and an ultrasonic probe, and the first guide wire punctures the abscess under the assistance of the camera, the light source and the ultrasonic probe;
s2, sleeving the outlet 11 of the first guide wire cavity of the catheter on the first guide wire, and extending into the abscess along the first guide wire;
s3, inserting a second guide wire from the entrance of the second guide wire cavity, penetrating the second guide wire cavity and entering the abscess;
s4, removing the catheter with the first and second guide wires still remaining within the abscess;
s5, sleeving a first guide wire with a first stent, and entering the abscess along the first guide wire, wherein the stent is installed in the abscess;
s6, taking out the first guide wire;
s7, referring to the steps S2-S6, the first guide wire cavity outlet 11 of the catheter is extended into the abscess along the second guide wire; more stents are installed inside the abscess by repeated insertion and removal of more guide wires.
To sum up, the utility model provides a catheter is established at same one end through the export with first seal wire chamber and second seal wire chamber, has guaranteed that two seal wires succeed in puncturing or all getting into the narrow department of bile duct in same position to put into more supports, greatly reduced the degree of difficulty of operation, and improved the quality of operation, reduced the wrong possibility of puncture.
While the invention has been described in detail with reference to the preferred embodiments thereof, it should be understood that the above description should not be taken as limiting the invention. Numerous modifications and alterations to the present invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be limited only by the attached claims.
Claims (10)
1. A catheter for placing a plurality of stents is characterized by being made of flexible materials and comprising a first guide wire cavity and a second guide wire cavity which are adjacently arranged, wherein the outlet of the first guide wire cavity and the outlet of the second guide wire cavity are both positioned at the far end of the catheter; the inlet of the second guide wire cavity is arranged at the proximal end of the catheter; a first guidewire lumen inlet is disposed between said distal end and said proximal end; the first guidewire lumen is shorter in length than the second guidewire lumen.
2. The catheter for placement into a plurality of stents of claim 1, wherein the cross-section of the first guidewire lumen inlet forms an obtuse angle with the outer catheter wall.
3. The catheter for placement of multiple stents according to claim 1, wherein the distal end is tapered relative to the diameter of the catheter at other areas and the first guidewire lumen exit and the second guidewire lumen exit together form a frusto-conical shape.
4. The catheter for deploying a plurality of stents of claim 1 wherein the distal end of the catheter is radiopaque.
5. The catheter for placement of multiple stents according to claim 1, wherein said first guidewire lumen inlet is provided with inlet indicia and said first guidewire lumen outlet is provided with outlet indicia.
6. The catheter for deploying a plurality of stents of claim 1, wherein the catheter has a length in the range of 180-220cm and the first guidewire lumen has a length in the range of 10-30 cm.
7. The catheter for placement into a plurality of stents of claim 1, wherein the catheter has a diameter in the range of 2.3 to 2.7mm, and the first guidewire lumen and the second guidewire lumen are each 1 to 1.2mm in diameter.
8. The catheter for inserting multiple stents of claim 1, wherein the catheter is provided with a spacer, and the first guidewire lumen and the second guidewire lumen are defined by the spacer.
9. The catheter for inserting multiple stents of claim 8, wherein said spacer member has one end located at the inlet of the first guidewire lumen and the other end located at the outlet of the first guidewire lumen.
10. The catheter for placement of multiple stents according to claim 1, wherein the proximal end of the catheter is connected to a handpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220187813.6U CN217040440U (en) | 2022-01-24 | 2022-01-24 | Catheter for implanting multiple stents |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220187813.6U CN217040440U (en) | 2022-01-24 | 2022-01-24 | Catheter for implanting multiple stents |
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| Publication Number | Publication Date |
|---|---|
| CN217040440U true CN217040440U (en) | 2022-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220187813.6U Active CN217040440U (en) | 2022-01-24 | 2022-01-24 | Catheter for implanting multiple stents |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116492099A (en) * | 2023-06-16 | 2023-07-28 | 昆明市第一人民医院 | Method for establishing rat tree shrew xenogeneic in-situ liver transplantation model |
-
2022
- 2022-01-24 CN CN202220187813.6U patent/CN217040440U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116492099A (en) * | 2023-06-16 | 2023-07-28 | 昆明市第一人民医院 | Method for establishing rat tree shrew xenogeneic in-situ liver transplantation model |
| CN116492099B (en) * | 2023-06-16 | 2023-09-15 | 昆明市第一人民医院 | Bile duct puncture outfit for rat tree shrew xenogeneic in-situ liver transplantation |
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