CN218606956U - Y-shaped self-expanding metal stent for bile pancreatic duct - Google Patents
Y-shaped self-expanding metal stent for bile pancreatic duct Download PDFInfo
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- CN218606956U CN218606956U CN202222171180.2U CN202222171180U CN218606956U CN 218606956 U CN218606956 U CN 218606956U CN 202222171180 U CN202222171180 U CN 202222171180U CN 218606956 U CN218606956 U CN 218606956U
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Abstract
The utility model provides a courage pancreatic duct Y type is from formula metal support that expands, including the inflation pipe fitting, the portion is put into including the bile duct portion of putting that is linked together, pancreatic duct portion of putting into and the portion is put into to the duodenum, the bile duct portion of putting into pancreas duct portion of putting into with the duodenum portion of putting into is the Y type and arranges, wherein the bile duct portion of putting into with the pancreatic duct portion of putting into contained angle is 90. This bile pancreatic duct Y type is from expanding formula metal support, through inflation pipe fitting expansion kettle belly stenosis obstruction position, the bile duct portion of putting into, the pancreas pipe portion of putting into and the duodenum of putting into of will communicating is put into patient's bile duct, pancreas pipe and duodenum and is put into in the portion correspondence, realizes carrying out the drainage to the bile in the patient's bile duct and the pancreatic juice in the pancreas in the same period, avoids twice operation, has reduced patient's misery.
Description
Technical Field
The utility model relates to the technical field of medical equipment, especially, relate to a Y type is from expanding formula metal support at courage pancreatic duct.
Background
Pancreatoduodenectomy is the main treatment mode of ampulla tumor, for some patients with early tumor, surgical ampulla excision or endoscopic duodenum papillary excision can be adopted, because the tumor progresses quickly and has poor prognosis, part of patients with late tumor or patients without operation will adopt conservative treatment, if the patients have obstructive jaundice, the endoscope is mostly adopted to carry out retrograde cholangiopancreatography and the cholangiography is adopted and the bile duct stent is placed for drainage or the biliary duct drainage is placed through percutaneous hepatic puncture; if the patients are combined and have pancreatic duct obstruction, the pancreatic duct bracket needs to be arranged again.
Because patients are combined to have obstructive jaundice and pancreatic duct obstruction and need to be respectively placed with two kinds of stents, the problems of difficult stent placement, poor drainage effect and the like often exist, part of patients adopt biliary tract drainage placement by percutaneous liver puncture to have bile loss and have electrolyte disorder and the like, part of patients need to repeatedly place the stents or finally have to undergo operations with large wounds, the life quality of the patients is greatly influenced, although the current Y-shaped stent can realize the same-period drainage effect, the Y-shaped stent has pertinence due to the placement position and is not suitable for drainage of bile and pancreatic juice, the Y-shaped stent can not effectively adhere to a common bile duct and a pancreatic duct in the using process, the position is unstable after the Y-shaped stent is placed, the Y-shaped stent is easy to deviate, and the drainage effect is influenced.
In summary, there is an urgent need for a cholecystopancreatic tube Y-shaped self-expandable metal stent which can simultaneously realize the drainage of bile and pancreatic juice, has good drainage effect and is stable in position after being placed.
SUMMERY OF THE UTILITY MODEL
In order to solve above-mentioned bile duct support and pancreatic duct support and put into the drainage that the in-process can not realize bile and pancreatic juice in the same period, current Y type support drainage effect is not good and put into the unstable problem of back position, the utility model provides a bile duct pancreatic duct Y type is from expanding formula metal support.
According to an object of the utility model, the utility model provides a courage pancreatic duct Y type is from expanding formula metal support, include: the expanded pipe fitting comprises a bile duct embedding part, a pancreatic duct embedding part and a duodenum embedding part which are communicated with each other, the bile duct embedding part, the pancreatic duct embedding part and the duodenum embedding part are arranged in a Y shape, and an included angle between the bile duct embedding part and the pancreatic duct embedding part is 90 degrees.
Preferably, the ratio of the length of the bile duct implanting part to the length of the pancreatic duct implanting part is 2.
Preferably, the diameter of the duodenum insertion part is larger than the diameter of the pancreatic duct insertion part, and the diameter of the duodenum insertion part is larger than the diameter of the bile duct insertion part.
Preferably, the sum of the diameter of the pancreatic duct insertion portion and the diameter of the bile duct insertion portion is not larger than the diameter of the duodenal insertion portion.
Preferably, the expanded pipe fitting is a woven mesh expanded pipe fitting.
Preferably, the expansion pipe fitting is an expansion pipe fitting made of nickel titanium shape memory alloy wires.
Preferably, the Y-shaped self-expandable metal stent for the bile pancreatic duct further comprises an inner core, wherein the inner core is embedded in the expansion pipe fitting, and the inner core is detachably connected with the expansion pipe fitting.
Preferably, the inner core comprises three connected sections, wherein the three sections are a bile duct section, a pancreatic duct section and a duodenal section, the bile duct section is arranged corresponding to the bile duct implanting part, the pancreatic duct section is arranged corresponding to the pancreatic duct implanting part, and the duodenal section is arranged corresponding to the duodenal implanting part.
Preferably, the expansion pipe fitting comprises a first gauge expansion pipe fitting or a second gauge expansion pipe fitting;
in the first-specification expansion pipe fitting, the diameter of the bile duct implanting part is 5mm, the length of the bile duct implanting part is 60mm, the diameter of the pancreatic duct implanting part is 3mmm, the length of the pancreatic duct implanting part is 30mm, and the diameter of the duodenal implanting part is 8mm, and the length of the duodenal implanting part is 20mm;
in the second specification of the expansion pipe fitting, the diameter of the bile duct implanting part is 8mm, the length of the bile duct implanting part is 80mm, the diameter of the pancreatic duct implanting part is 5mmm, the length of the pancreatic duct implanting part is 40mm, and the diameter of the duodenal implanting part is 13mm, and the length of the duodenal implanting part is 30mm.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the bile-pancreatic duct Y-shaped self-expanding metal stent expands the narrow and obstructed part of the ampulla by the expansion pipe fitting, and correspondingly arranges the communicated bile duct embedding part, pancreatic duct embedding part and duodenum embedding part into the bile duct, pancreatic duct and duodenum of a patient, thereby realizing drainage of bile in the bile duct of the patient and pancreatic juice in pancreas at the same time, avoiding twice operation and reducing the pain of the patient;
2. the Y-shaped self-expandable metal stent for bile and pancreatic ducts limits the included angle between the bile duct imbedding part and the pancreatic duct imbedding part, so that when the bile duct imbedding part and the pancreatic duct imbedding part are placed at an obstructed part, the bile duct imbedding part and the pancreatic duct imbedding part can be respectively and fully attached to a common bile duct and a pancreatic duct, and the drainage function is realized;
3. the Y-shaped self-expandable metal stent for the choledocreatic duct is characterized in that the duodenum is placed in the duodenum of the patient, so that the expandable pipe in the stent is expanded and attached to the common bile duct and the pancreatic duct of the patient, and the expandable pipe is not easy to displace.
The present invention will be further described with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is an overall schematic view of one embodiment of the Y-shaped self-expandable metal stent for the bile duct and the pancreatic duct of the present invention.
In the figure: 100. expanding the tubular element; 101. a bile duct implanting portion; 102. a pancreatic duct insertion section; 103. a duodenum insertion section; 200. an inner core; 201. a bile duct segment; 202. a pancreatic duct segment; 203. segment of duodenum.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments described below are by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.
Referring to fig. 1, the present invention provides a technical solution: a bile pancreatic duct Y-shaped self-expanding metal stent comprises: the expansion pipe fitting 100 comprises a bile duct implanting part 101, a pancreatic duct implanting part 102 and a duodenum implanting part 103 which are communicated, wherein the bile duct implanting part 101, the pancreatic duct implanting part 102 and the duodenum implanting part 103 are arranged in a Y shape, and an included angle between the bile duct implanting part 101 and the pancreatic duct implanting part 102 is 90 degrees.
Expand ampulla ampullata stenosis and obstruct the position through inflation tube spare 100, the bile duct portion 101 of putting into with the intercommunication, pancreas pipe portion 102 of putting into and duodenum portion 103 of putting into corresponds puts into patient's bile duct, pancreas pipe and duodenum, the realization is drainage to the bile in the patient's bile duct and the pancreatic juice in the pancreas in the same period, avoid twice operation, patient's misery has been reduced, wherein put into portion 101 and pancreas pipe portion 102 contained angle degree to the bile duct and inject, make the bile duct portion 101 of putting into and pancreas pipe portion 102 of putting into when putting into in the position of obstructing, common bile duct and pancreas pipe can fully laminate respectively, realize the drainage function.
Further, the ratio of the length of the bile duct implanting portion 101 to the length of the pancreatic duct implanting portion 102 is 2.
The length of the bile duct implanting part 101 and the length proportion of the pancreatic duct implanting part 102 are limited, so that when the bile duct implanting part 101 and the pancreatic duct implanting part 102 are arranged at the obstruction part of a patient, the bile duct implanting part 101 and the pancreatic duct implanting part 102 can be matched with the structural characteristics of the original common bile duct and pancreatic duct in the patient body, and the obstruction part is effectively attached and expanded.
Further, the diameter of the duodenum implantation part 103 is larger than that of the pancreatic duct implantation part 102, and the diameter of the duodenum implantation part 103 is larger than that of the bile duct implantation part 101.
The diameter of the duodenum embedding part 103, the diameter of the pancreatic duct embedding part 102, the diameter of the duodenum embedding part 103 and the diameter of the bile duct embedding part 101 are limited, so that the duodenum embedding part 103 in the duodenum of the patient can effectively and stably support the whole position of the stent, and the stent is prevented from shifting after surgical installation is finished, and further the flow guiding effect of the stent is influenced.
Further, the sum of the diameter of the pancreatic duct insertion part 102 and the diameter of the bile duct insertion part 101 is not more than the diameter of the duodenal insertion part 103.
In one embodiment of the present invention, the sum of the diameter of the pancreatic duct insertion portion 102 and the diameter of the bile duct insertion portion 101 is equal to the diameter of the duodenal insertion portion 103.
By limiting the diameter of the pancreatic duct implanting part 102, the diameter of the bile duct implanting part 101 and the diameter of the duodenal duct implanting part 103, the joint of the duodenal duct implanting part 103, the bile duct implanting part 101 and the pancreatic duct implanting part 102 has high stability, so that the duodenal duct implanting part 103 can fully support the bile duct implanting part 101 and the pancreatic duct implanting part 102, and the stent is not easy to displace after being expanded and attached to a common bile duct and a pancreatic duct.
Further, the expanded tube 100 is a braided expanded mesh tube.
The expanded tube member 100 has high ductility by defining the forming process of the shape of the expanded tube member 100, and the shape of the expanded tube member 100 can be flexibly changed to be suitable for the operation.
It should be noted that, in the braided mesh expanded pipe, the braided part is only the wall of the expanded pipe 100.
Further, the expanded tube 100 is an expanded tube of nitinol wire.
By utilizing the principle that the nickel-titanium shape memory alloy is easy to compress and stretch, the expansion pipe fitting 100 can deform at will at room temperature, and when the ambient temperature reaches the temperature of a human body, the expansion pipe fitting 100 can immediately and spontaneously recover to the original design shape so as to be fully attached to the common bile duct and the pancreatic duct of a patient.
Further, the stent further comprises an inner core 200, the inner core 200 is embedded in the expansion pipe 100, and the inner core 200 is detachably connected to the expansion pipe 100.
By arranging the inner core 200, after the pancreaticobiliary tract is retrogradely imaged by an endoscope, an operator can use an insertion instrument to be matched with the inner core 200, place the expansion pipe fitting 100 containing the inner core 200 into the focus of a patient, and pull out the inner core 200 when the expansion pipe fitting 100 is restored to the original design shape so as to finish the operation.
Further, the inner core 200 includes three segments connected to each other, which are a bile duct segment 201, a pancreatic duct segment 202, and a duodenal segment 203, wherein the bile duct segment 201 is disposed corresponding to the bile duct implanting portion 101, the pancreatic duct segment 202 is disposed corresponding to the pancreatic duct implanting portion 102, and the duodenal segment 203 is disposed corresponding to the duodenal implanting portion 103.
The inner core 200 is divided into a bile duct segment 201, a pancreatic duct segment 202 and a duodenal segment 203 which are connected, and the bile duct segment 201, the pancreatic duct segment 202 and the duodenal segment 203 are respectively corresponding to the bile duct implanting part 101, the pancreatic duct implanting part 102 and the duodenal implanting part 103, so that the inner core 200 can stably support each part of the expansion tube 100 when the expansion tube 100 is implanted by the inner core 200.
Further, the expanded tubular 100 comprises an expanded tubular of a first gauge or an expanded tubular of a second gauge;
in the first specification of the expansion pipe fitting, the diameter of the bile duct implanting part 101 is 5mm, the length of the bile duct implanting part is 60mm, the diameter of the pancreatic duct implanting part 102 is 3mmm, the length of the pancreatic duct implanting part is 30mm, and the diameter of the duodenal implanting part 103 is 8mm, and the length of the duodenal implanting part is 20mm;
in the second-specification expansion pipe fitting, the diameter of the bile duct implanting part 101 is 8mm, the length of the bile duct implanting part is 80mm, the diameter of the pancreatic duct implanting part 102 is 5mmm, the length of the pancreatic duct implanting part is 40mm, and the diameter of the duodenal implanting part 103 is 13mm, and the length of the duodenal implanting part is 30mm.
By dividing the inflatable tube 100 into different sizes, the common bile duct and the pancreatic duct can be better matched, and the stent can be suitable for patients with different conditions.
The working principle is as follows:
after the pancreaticobiliary tract is retrogradely screened by an endoscope, the expansion pipe fitting 100 is adjusted to be in a proper pre-implantation state at room temperature, the expansion pipe fitting 100 containing the inner core 200 is matched with an implantation instrument to be implanted into the body of a patient, wherein the bile duct implantation part 101 and the pancreatic duct implantation part 102 are respectively implanted into the common bile duct and the pancreatic duct of the patient, when the expansion pipe fitting 100 reaches the temperature of the human body, the expansion pipe fitting 100 spontaneously restores to the original design shape, the bile duct implantation part 101 covers the inner surface of the common bile duct, the pancreatic duct implantation part 102 covers the inner surface of the pancreatic duct, the duodenum implantation part 103 is implanted into the duodenum to support and position the whole stent, the duodenum section 203 in the duodenum implantation part 103 is further extracted, the bile duct section 201 and the pancreatic duct section 202 are respectively extracted from the bile duct implantation part 101 and the pancreatic duct implantation part 102 by the duodenum section 203, and the inner core 200 is extracted to finish the operation;
wherein if the ampulla of the patient is completely blocked, the ampulla can be placed after the incision of the ampulla under the endoscope.
The stent can expand the narrow and obstructed part of the ampulla and can drain bile in the bile duct and pancreatic juice in pancreas simultaneously.
In conclusion, this bile duct pancreatic duct Y type is from expanding formula metal support passes through inflation pipe fitting 100 expansion ampulla portion of blocking, will communicate bile duct portion of putting into 101, pancreas pipe portion of putting into 102 and duodenum portion of putting into 103 and correspondingly put into patient's bile duct, pancreas pipe and duodenum, realize that the bile in patient's bile duct and the pancreatic juice in the pancreas are drained in the same period, avoid twice operation, patient's misery has been reduced, wherein inject bile duct portion of putting into 101 and pancreas pipe portion of putting into 102 contained angle degree of degrees, make bile duct portion of putting into 101 and pancreas pipe portion of putting into 102 arrange in when blocking the position, can fully laminate common bile duct and pancreas pipe respectively, realize the drainage function.
The above-mentioned embodiments are only used for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to limit the scope of the present invention in terms of implementation, which is not limited by the present embodiment, i.e. all equivalent changes or modifications made in accordance with the spirit disclosed by the present invention still fall within the scope of the present invention.
Claims (9)
1. The utility model provides a bile pancreatic duct Y type is from expanding formula metal support which characterized in that includes: the expanded pipe fitting (100) comprises a bile duct implanting part (101), a pancreatic duct implanting part (102) and a duodenum implanting part (103) which are communicated with one another, the bile duct implanting part (101), the pancreatic duct implanting part (102) and the duodenal implanting part (103) are arranged in a Y shape, and an included angle between the bile duct implanting part (101) and the pancreatic duct implanting part (102) is 90 degrees.
2. The bile-pancreatic duct Y-shaped self-expandable metal stent of claim 1, characterized in that: the ratio of the length of the bile duct insertion part (101) to the length of the pancreatic duct insertion part (102) is 2.
3. The bile-pancreatic duct Y-shaped self-expandable metal stent of claim 1, which is characterized in that: the diameter of the duodenum implanting part (103) is larger than that of the pancreatic duct implanting part (102), and the diameter of the duodenum implanting part (103) is larger than that of the bile duct implanting part (101).
4. The bile-pancreatic duct Y-shaped self-expandable metal stent of claim 3, wherein: the sum of the diameter of the pancreatic duct insertion part (102) and the diameter of the bile duct insertion part (101) is not more than the diameter of the duodenal insertion part (103).
5. The bile-pancreatic duct Y-shaped self-expandable metal stent of claim 1, characterized in that: the expansion pipe fitting (100) is a mesh expansion pipe fitting formed by weaving.
6. The bile-pancreatic duct Y-shaped self-expandable metal stent of claim 5, wherein: the expansion pipe (100) is an expansion pipe (100) made of nickel-titanium shape memory alloy wires.
7. The bile-pancreatic duct Y-shaped self-expandable metal stent of claim 1, characterized in that: the expansion pipe is characterized by further comprising an inner core (200), wherein the inner core (200) is embedded in the expansion pipe (100), and the inner core (200) is detachably connected with the expansion pipe (100).
8. The bile-pancreatic duct Y-shaped self-expandable metal stent of claim 7, wherein: the inner core (200) comprises three sections which are connected, wherein the three sections are a bile duct section (201), a pancreatic duct section (202) and a duodenal section (203), the bile duct section (201) is arranged corresponding to the bile duct imbedding portion (101), the pancreatic duct section (202) is arranged corresponding to the pancreatic duct imbedding portion (102), and the duodenal section (203) is arranged corresponding to the duodenal imbedding portion (103).
9. The bile-pancreatic duct Y-shaped self-expandable metal stent of claim 1, characterized in that: the expanded tubular (100) comprises a first gauge expanded tubular or a second gauge expanded tubular;
in the first-specification expansion pipe fitting, the diameter of the bile duct implanting part (101) is 5mm, the length of the bile duct implanting part is 60mm, the diameter of the pancreatic duct implanting part (102) is 3mmm, the length of the pancreatic duct implanting part is 30mm, and the diameter of the duodenal implanting part (103) is 8mm, and the length of the duodenal implanting part is 20mm;
in the second-specification expansion pipe fitting, the diameter of the bile duct implanting part (101) is 8mm, the length of the bile duct implanting part is 80mm, the diameter of the pancreatic duct implanting part (102) is 5mmm, the length of the pancreatic duct implanting part is 40mm, and the diameter of the duodenal implanting part (103) is 13mm, and the length of the duodenal implanting part is 30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222171180.2U CN218606956U (en) | 2022-08-17 | 2022-08-17 | Y-shaped self-expanding metal stent for bile pancreatic duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222171180.2U CN218606956U (en) | 2022-08-17 | 2022-08-17 | Y-shaped self-expanding metal stent for bile pancreatic duct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218606956U true CN218606956U (en) | 2023-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222171180.2U Active CN218606956U (en) | 2022-08-17 | 2022-08-17 | Y-shaped self-expanding metal stent for bile pancreatic duct |
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| CN (1) | CN218606956U (en) |
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- 2022-08-17 CN CN202222171180.2U patent/CN218606956U/en active Active
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