Pancreatic duct stent
By designing a reasonable pancreatic duct stent structure and anti-slip ring, the problems of slippage, blockage, and damage of existing plastic pancreatic duct stents have been solved, reducing the complications of pancreatic surgery, especially the risk of pancreatic leakage.
Patent Information
- Application Number
- CN202520220334.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-12
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-02-12
AI Technical Summary
Existing plastic pancreatic duct stents pose risks of slippage, blockage, and damage during pancreatic surgery, leading to increased complications and failing to effectively reduce the incidence of pancreatic leakage.
A pancreatic duct stent was designed, comprising a first end, a second end, and a middle section. The first and second ends are provided with side holes, while the middle section has no side holes. An anti-slip ring is provided on the outer side of the middle section. The side holes are reasonably distributed, and the end is designed with an arc shape to reduce damage. The length of the middle section is extended to cross the bile-enteric anastomosis.
It achieves anti-slip, anti-blockage, and anti-damage functions, reducing the incidence of pancreatic surgery complications, especially pancreatic fistula.
Smart Images
Figure CN223627651U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of medical devices, more particularly, it relates to a pancreatic duct stent. BACKGROUND
[0002] Pancreatic surgery is the most complex surgery in general surgery, and the related complications are particularly numerous, among which the complications related to pancreaticoduodenectomy and local resection of pancreatic tumor are the most numerous. In the past, a plastic tube was generally used as a pancreatic duct stent to support the pancreatic duct during pancreatic surgery, thereby reducing the incidence of pancreatic leakage complications. However, the plastic tube used in clinical practice needs to be cut to size, and the size of the side hole and the length of the middle hole-free segment cannot be strictly controlled. If the side hole is too small, the stent may be easily blocked, and if the middle hole-free segment is too short, bile in the small intestine may flow back to the anastomotic stoma through the side hole, activating pancreatic enzymes and increasing the risk of pancreatic leakage. Because the end of the cut tube is relatively sharp, there have been cases of postoperative pancreatic duct stent puncturing the small intestine and causing perforation. In addition, the stent needs to be fixed by knotting with sutures, which may slip in the short term after surgery, resulting in a lack of support. The above shortcomings increase the risk of complications after pancreatic surgery and seriously affect the quality of life of patients. CONTENT OF THE UTILITY MODEL
[0003] The present application aims to provide a pancreatic duct stent that prevents slippage, blockage, and damage, in order to reduce complications related to pancreatic surgery.
[0004] In order to achieve the above-mentioned purpose of the application, the following technical solutions are adopted in the present application:
[0005] The present application provides a pancreatic duct stent, which comprises:
[0006] a first end, the first end being a pancreatic duct end, the first end being provided with an end hole and a side hole;
[0007] a second end, the second end being a small intestine end, the second end being provided with a side hole; and
[0008] a middle segment, the two ends of the middle segment being connected to the first end and the second end respectively, the middle segment being provided with no side hole.
[0009] Further, the end of the first end away from the middle segment is arc-shaped.
[0010] Further, the end of the second end away from the middle segment is arc-shaped.
[0011] Further, the length of the middle segment accounts for 1 / 4 to 1 / 3 of the total length of the pancreatic duct stent, and the lengths of the first end and the second end are the same or different.
[0012] Further, the total length of the pancreatic duct stent is 15-20 cm, the length of the middle section is 5 cm, and the lengths of the first end and the second end are the same.
[0013] Further, the side holes are arranged on the first end or the second end, the distance between two adjacent side holes along the axial direction of the pancreatic duct stent is 5-10 mm, the diameter of the side hole is 1.5-2.5 mm, and two adjacent side holes along the radial direction of the pancreatic duct stent are staggered.
[0014] Further, the outer side of the middle section is provided with an anti-skid ring, and the anti-skid ring is arranged at the end of the middle section close to the first end.
[0015] Further, the anti-skid ring is a medical silicone material coil.
[0016] Further, the anti-skid ring is a medical silicone material coil.
[0017] In summary, the present application has the following beneficial effects:
[0018] The pancreatic duct stent of the present application has the functions of anti-skid, anti-clogging and anti-injury, effectively reduces the complications of pancreatic surgery, and by extending the length of the middle section without side holes to 5 cm, the pancreatic duct stent can cross the cholangioenteric anastomosis, reduce the activation of pancreatic enzymes by bile near the pancreaticoenteric anastomosis, and reduce the incidence of pancreatic leakage. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 The structure of the pancreatic duct stent in the embodiment of the present application is shown in the figure.
[0020] The figure shows: 1, first end; 2, second end; 3, middle section; 4, side hole; 5, end hole; 6, anti-skid ring. DETAILED DESCRIPTION
[0021] The structure and effects of the present application will be further described in detail below in combination with the embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application and are not a limitation of the present application. In addition, it should be noted that, in order to facilitate description, only the parts related to the present application are shown in the drawings, not all the structures.
[0022] EMBODIMENT
[0023] The embodiment of the present application discloses a pancreatic duct stent, which is shown in Figure 1 The pancreatic duct stent comprises a one-piece first end 1, a middle section 3 and a second end 2, and the first end 1 and the second end 2 are connected to the two sides of the middle section 3 respectively. The first end 1 is the pancreatic duct end, and the second end 2 is the small intestine end.
[0024] With reference to Figure 1 , the first end 1 is provided with a tip hole 5 at the end away from the middle section 3, and a plurality of side holes 4 are provided in the middle of the first end 1. The two side holes 4 adjacent in the axial direction of the pancreatic duct stent are uniformly spaced, with a spacing of 5-10 mm, and the side hole 4 has a diameter of 1.5-2.5 mm; the two side holes 4 adjacent in the radial direction of the pancreatic duct stent are staggered. In one embodiment, the spacing between the two side holes 4 adjacent in the axial direction of the pancreatic duct stent is about 5 mm, and the diameter is about 1.5 mm; in another embodiment, the spacing between the two side holes 4 adjacent in the axial direction of the pancreatic duct stent is about 10 mm, and the diameter is about 2 mm; in another embodiment, the spacing between the two side holes 4 adjacent in the axial direction of the pancreatic duct stent is about 10 mm, and the diameter is about 2.5 mm.
[0025] With reference to Figure 1 , the middle of the second end 2 is provided with a plurality of side holes 4. The two side holes 4 adjacent in the axial direction of the pancreatic duct stent are uniformly spaced, with a spacing of 5-10 mm, and the side hole 4 has a diameter of 1.5-2.5 mm; the two side holes 4 adjacent in the radial direction of the pancreatic duct stent are staggered. In one embodiment, the spacing between the two side holes 4 adjacent in the axial direction of the pancreatic duct stent is about 5 mm, and the diameter is about 1.5 mm; in another embodiment, the spacing between the two side holes 4 adjacent in the axial direction of the pancreatic duct stent is about 10 mm, and the diameter is about 2 mm; in another embodiment, the spacing between the two side holes 4 adjacent in the axial direction of the pancreatic duct stent is about 10 mm, and the diameter is about 2.5 mm.
[0026] With reference to Figure 1 , the middle section 3 is provided without side holes 4, and the length of the middle section 3 accounts for 1 / 4-1 / 3 of the total length of the pancreatic duct stent, and the lengths of the first end 1 and the second end 2 are the same or different. In a feasible embodiment, the total length of the pancreatic duct stent is 15-20 cm, the length of the middle section 3 accounts for 1 / 4-1 / 3 of the total length of the pancreatic duct stent, and the lengths of the first end 1 and the second end 2 are the same or different. In one embodiment, the total length of the pancreatic duct stent is 15 cm, the length of the middle section 3 is 5 cm, and the lengths of the first end 1 and the second end 2 are equal. In another embodiment, the total length of the pancreatic duct stent is 20 cm, the length of the middle section 3 is 5 cm, and the lengths of the first end 1 and the second end 2 are equal. As set forth above, the length of the middle section without side holes 4 is increased to 5 cm, which can cross the cholangioenteric anastomosis, thereby reducing the activation of pancreatic enzymes by bile near the pancreaticoenteric anastomosis, and thus reducing the incidence of pancreatic leakage.
[0027] With reference to Figure 1 , the end of the first end 1 away from the middle section 3 and the end of the second end 2 away from the middle section 3 are both provided in a circular arc shape, which can reduce the possibility of causing damage to the pancreatic duct when inserted into the pancreatic duct.
[0028] With reference to Figure 1The outer side of the middle section 3 is provided with an anti-skid ring 6, which is arranged at the end of the middle section 3 close to the first end 1. In an embodiment, the anti-skid ring 6 is a coil made of medical silica gel, and the silica gel anti-skid ring 6 has a thickness of 1 mm and a coil diameter of 3-4 mm. In this way, the pancreatic duct stent is easy to fix, and the stent is prevented from slipping off in a short period after the operation.
[0029] During the pancreatic surgery, the pancreatic duct stent of the present application can be inserted into the pancreatic duct as a support tube. The pancreatic duct stent has the functions of anti-slipping, anti-blocking and anti-injury, and effectively reduces the complications of pancreatic surgery. Moreover, by extending the middle section 4 without side holes, the length thereof is increased to 5 cm, so as to cross the cholangioenteric anastomosis, reduce the activation of pancreatic enzymes by bile near the pancreaticoenteric anastomosis, and reduce the incidence of pancreatic leakage.
[0030] The specific embodiments are merely illustrative of the present application, and are not intended to limit the present application. Those skilled in the art can make modifications to the embodiments without creative contribution after reading the present specification, as long as the modifications are within the scope of the claims of the present application.
Claims
1. A pancreatic duct stent, characterized by, The application relates to a pancreatic duct stent, which comprises: a first end, which is a pancreatic duct end, and is provided with a tip hole and side holes; a second end, which is a small intestine end, and is provided with side holes; and a middle section, which is connected with the first end and the second end respectively, and is not provided with side holes.
2. The pancreatic duct stent of claim 1, wherein, The end of the first end away from the middle section is in an arc shape.
3. The pancreatic duct stent of claim 1, wherein, The end of the second end away from the middle section is in an arc shape.
4. The pancreatic duct stent of claim 1, wherein, The length of the middle section accounts for 1 / 4-1 / 3 of the total length of the pancreatic duct stent, and the lengths of the first end and the second end are the same or different.
5. The pancreatic duct stent of claim 4, wherein, The total length of the pancreatic duct stent is 15-20 cm, the length of the middle section is 5 cm, and the lengths of the first end and the second end are the same.
6. The pancreatic duct stent of claim 5, wherein, The side holes are arranged on the first end or the second end at intervals, the interval between two side holes adjacent in the axial direction of the pancreatic duct stent is 5-10 mm, the diameter of the side holes is 1.5-2.5 mm, and two side holes adjacent in the radial direction of the pancreatic duct stent are staggered.
7. The pancreatic duct stent of claim 1, wherein, A slip-resistant ring is arranged outside the middle section, and the slip-resistant ring is arranged at the end of the middle section close to the first end.
8. The pancreatic duct stent of claim 7, wherein, The slip-resistant ring is a medical silica gel material coil.