CN112402077A

CN112402077A - Pancreatic intraductal drainage stent and use method thereof

Info

Publication number: CN112402077A
Application number: CN202011274835.8A
Authority: CN
Inventors: 金富康; 薛剑
Original assignee: Suzhou Frankenman Medical Equipment Co Ltd
Current assignee: Suzhou Frankenman Medical Equipment Co Ltd
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-02-26
Anticipated expiration: 2040-11-16
Also published as: CN112402077B

Abstract

The invention discloses a pancreatic intraductal drainage support and a using method thereof, wherein the pancreatic intraductal drainage support comprises a drainage pipeline and supporting mechanisms, the drainage pipeline is of a cylindrical tubular structure, the four supporting mechanisms are movably clamped around the periphery of the top end of the drainage pipeline, the four supporting mechanisms form a group, the drainage pipeline is provided with a plurality of groups of supporting mechanisms at equal intervals along the extending direction, a supporting connecting rod is arranged between two adjacent supporting mechanisms, and a connecting supporting rod is arranged between the groups of supporting mechanisms; the drainage pipeline comprises a pipe body, drainage grooves are formed in the side face of the pipe body, drainage holes are evenly formed in the bottom face of each drainage groove at equal intervals, and limiting ports are formed in the surface of the outer side of the pipe body at two adjacent equal intervals between the drainage grooves. When the device is used, the device can be randomly bent in the pancreatic duct according to the requirement, so that the device can be conveniently extended in the pancreatic duct, and meanwhile, the supporting mechanism can be more matched with the inner wall of the pancreatic duct of a patient and can change the diameter according to the requirement.

Description

Pancreatic intraductal drainage stent and use method thereof

Technical Field

The invention relates to the technical field of medical instruments, in particular to a pancreatic intraductal drainage stent and a using method thereof.

Background

Acute pancreatitis, chronic pancreatitis and pancreatic cancer are three major diseases of the pancreas, and the incidence rate is increased year by year in recent years. Pancreatic diseases are mostly accompanied by morphological changes such as main and accessory pancreatic duct stenosis, distortion, dilation and the like, so that pancreatic juice drainage is not smooth, and symptoms such as abdominal pain, internal and external secretion function insufficiency and the like of a patient are caused; some patients with pancreatic trauma and post-pancreatic surgery may also have major and minor pancreatic duct injuries. At present, the method of placing a plastic pancreatic duct bracket under an endoscope for patients mostly adopts the method of smoothing pancreatic juice drainage and promoting pancreatic duct repair, and the method has better treatment effect on benign and malignant pancreatic duct stenosis.

However, in the conventional pancreatic duct internal drainage stent, when in use, the pancreatic duct internal wall is not tightly attached to the pancreatic duct internal wall, so that looseness is easily caused, and the diameter cannot be changed according to the internal diameter of the pancreatic duct at different positions if the pancreatic duct is tightly attached to the pancreatic duct.

Disclosure of Invention

The invention aims to provide a pancreatic intraductal drainage stent and a using method thereof, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a pancreatic intraductal drainage support and a using method thereof comprise a drainage pipeline and supporting mechanisms, wherein the drainage pipeline is of a cylindrical tubular structure, four supporting mechanisms are movably clamped around the periphery of the top end of the drainage pipeline, one group of the four supporting mechanisms are arranged, a plurality of groups of the supporting mechanisms are equidistantly arranged on the drainage pipeline along the extending direction, a supporting connecting rod is arranged between every two adjacent supporting mechanisms, and a connecting supporting rod is arranged between the groups of the supporting mechanisms;

the drainage pipeline comprises a pipe body, wherein drainage grooves are formed in the side face of the pipe body, drainage holes are uniformly formed in the bottom face of each drainage groove at equal intervals, and limiting ports are formed in the outer surface of the pipe body between every two adjacent drainage grooves at equal intervals;

the supporting mechanism comprises a clamping piece, the clamping piece is of an arc-shaped structure, a supporting rod is vertically protruded from the center of the bottom surface of the clamping piece, the supporting rod is of a cylindrical structure, and clamping grooves are formed in the centers of the front side surface and the rear side surface of the clamping piece;

the drainage pipeline is used for draining liquid in the pancreatic duct, the supporting mechanism is used for right the drainage pipeline provides support and fixed effect, the support connecting rod is used for doing the supporting mechanism provides balanced support, connecting rod is used for connecting the multiunit the supporting mechanism.

Furthermore, four drainage grooves are uniformly formed in the surface of the outer side of the drainage pipeline in a surrounding mode, and limiting fixing holes are formed in the surface of the pipe body between the adjacent drainage grooves.

Furthermore, the surface of the inner wall of the tube body is welded with elastic reinforcing ribs right below the limiting fixing holes, the elastic reinforcing ribs are of arc-shaped sheet structures, two ends of the elastic reinforcing ribs are welded on the surface of the inner wall of the tube body, and the elastic reinforcing ribs are formed by weaving nickel-titanium memory alloy wires.

Furthermore, the body with the bracing piece phase-match, the bracing piece slip peg graft in the body center, the bracing piece end weld perpendicularly in elasticity strengthening rib inboard surface center.

Furthermore, the top surface of the clamping piece is surrounded by a limiting groove, the limiting groove is an arc groove body, and fillets are respectively formed at two ends of the limiting groove in the clamping piece.

Further, the drainage groove is located two adjacent space centers between the clamping sheets, and the drainage hole is located in the center of the bottom surface of the drainage groove.

Further, support connecting rod fixed welding is adjacent two between the joint piece, support connecting rod with tie point between the joint piece is located the bracing piece side, support connecting rod is the arc and buckles the form, and buckles the orientation drainage pipeline outside surface one side, support connecting rod width does the fourth of joint piece width, and make for the polypropylene material.

Further, connect branch both ends activity joint in joint inslot portion, connect branch is the form of buckling, connect branch and buckle the orientation drainage pipeline outside surface, connect branch bottom surface center activity embedding in inside the spacing port, connect the branch width do two times of support connecting rod width, connect branch bottom surface center with spacing port passes through magnetic adsorption and connects, connect branch is made for nickel titanium memory alloy material.

Further, the pipe body is of a threaded hose structure, the pipe body is made of a nickel-titanium memory alloy material, the supporting mechanism is of an integrally formed structure, and the supporting mechanism is made of a polypropylene material.

A method for using a pancreatic intraductal drainage stent comprises the following steps:

s1, determining the length of the pipeline: the length of the tube body is determined according to the difference of the lengths of the pancreatic tubes, and other structures are matched around the tube body.

S2, combination: the bending top end of the connecting support rod is respectively clamped into the clamping groove, and the center of the bottom end of the connecting support rod is clamped into the limiting port and is adsorbed by magnetism.

S3, placing: the support position is determined by the drainage position, and the drainage stent is placed in the support position through an operation.

S4, adjustment: by moving the drainage support, the limiting groove is attached to the convex part of the inner wall of the pancreatic duct, so that the drainage support is attached to the inner wall of the pancreatic duct more closely and firmly.

Compared with the prior art, the invention has the beneficial effects that:

(1) according to the invention, the pipe body is set into a tubular structure with a smaller diameter and a threaded tubular structure, so that the pipe body can be randomly bent in the pancreatic duct as required, and can be conveniently extended in the pancreatic duct;

(2) the clamping sheet is arranged, and the surface of the clamping sheet is provided with the limiting groove, so that the limiting groove can be matched with the convex part on the inner wall of the pancreatic duct of a patient, the clamping is tight, and the device is more firmly fixed;

(3) the elastic reinforcing ribs are arranged, and are formed by weaving the nickel-titanium memory alloy wires, so that the elastic reinforcing ribs are low in elastic coefficient and easy to deform, and can deform towards the center direction of the tube body when being extruded, so that the supporting mechanism can move towards the center direction of the tube body, and the diameter of the annular body formed by the supporting mechanism can be changed according to the actual condition, so that the annular body is more matched with the inner wall of the pancreatic duct of a patient, and the pancreatic duct of the patient is prevented from being excessively expanded;

(4) the drainage groove is arranged, so that liquid can be drained into the drainage groove when the liquid flows, the liquid in the pancreatic duct can be conveniently concentrated in the drainage groove, the occupied volume of the duct body in the pancreatic duct is reduced, the obstruction to the liquid flow in the pancreatic duct is reduced, the liquid in the pancreatic duct can conveniently flow, meanwhile, the liquid can flow into the drainage hole, and the liquid can be conveniently drained.

Drawings

FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;

FIG. 2 is a schematic view of the drainage tube of the embodiment of FIG. 1;

FIG. 3 is a schematic structural view of the supporting mechanism in the embodiment of FIG. 1;

FIG. 4 is a schematic front view of the embodiment of FIG. 1;

FIG. 5 is an enlarged view of part A of the embodiment of FIG. 4;

FIG. 6 is a schematic side view of the embodiment of FIG. 1;

fig. 7 is a schematic structural diagram of a using method in the embodiment of fig. 1.

Reference numerals: 1. a drainage conduit; 101. a pipe body; 102. a drainage groove; 103. a drainage hole; 104. limiting fixing holes; 105. elastic reinforcing ribs; 106. a limiting port; 2. a support mechanism; 201. a clip sheet; 202. a support bar; 203. a limiting groove; 204. a clamping groove; 3. connecting a support rod; 4. and a connecting rod is supported.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

referring to fig. 1 to 6 together, a pancreatic duct internal drainage stent and a using method thereof include a drainage tube 1 and support mechanisms 2, wherein the drainage tube 1 is a cylindrical tubular structure, the four support mechanisms 2 are movably clamped around the periphery of the top end of the drainage tube 1, the four support mechanisms 2 form a group, the drainage tube 1 is provided with a plurality of groups of the support mechanisms 2 at equal intervals along the extending direction, a support connecting rod 4 is arranged between two adjacent support mechanisms 2, and a connecting rod 3 is arranged between the plurality of groups of the support mechanisms 2;

the drainage pipeline 1 comprises a pipe body 101, drainage grooves 102 are formed in the side face of the pipe body 101, drainage holes 103 are uniformly formed in the bottom faces of the drainage grooves 102 at equal intervals, and limiting ports 106 are formed in the outer side surface of the pipe body 101 between every two adjacent drainage grooves 102 at equal intervals;

the supporting mechanism 2 comprises a clamping sheet 201, the clamping sheet 201 is of an arc-shaped structure, a supporting rod 202 is vertically protruded from the center of the bottom surface of the clamping sheet 201, the supporting rod 202 is of a cylindrical structure, and clamping grooves 204 are formed in the centers of the front side surface and the rear side surface of the clamping sheet 201;

drainage pipeline 1 is used for carrying out the drainage to the liquid in the pancreatic duct, supporting mechanism 2 is used for right drainage pipeline 1 provides support and fixed effect, supporting rod 4 is used for doing supporting mechanism 2 provides balanced support, connecting rod 3 is used for connecting the multiunit supporting mechanism 2.

The drainage grooves 102 are uniformly provided with four drainage grooves 1 around the outer side surface of the drainage pipeline 1, the surface of the pipe body 101 is provided with a limiting fixing hole 104 between the adjacent drainage grooves 102 to avoid forming a large obstruction to the liquid flow, the inner wall surface of the pipe body 101 is welded with an elastic reinforcing rib 105 under the limiting fixing hole 104, the elastic reinforcing rib 105 is in an arc sheet structure, two ends of the elastic reinforcing rib are welded on the inner wall surface of the pipe body 101, the elastic reinforcing rib 105 is formed by weaving nickel-titanium memory alloy wires, so that the elastic reinforcing rib has higher elastic shape capability and is easy to deform, the pipe body 101 is matched with the support rod 202, the support rod 202 is inserted in the center of the pipe body 101 in a sliding manner, the tail end of the support rod 202 is vertically welded at the center of the inner side surface of the elastic reinforcing rib 105, the top surface of the clamping sheet 201 is surrounded with a limiting groove 203, the limiting groove 203 is an arc-shaped groove body, the clamping sheet 201 is arranged at two ends of the limiting groove 203 and is provided with round corners, the drainage groove 102 is arranged at the center of a gap between two adjacent clamping sheets 201, the drainage hole 103 is arranged at the center of the bottom surface of the drainage groove 102, so that liquid can be conveniently concentrated in the drainage groove 102, the support connecting rod 4 is fixedly welded between the two adjacent clamping sheets 201, the connecting point between the support connecting rod 4 and the clamping sheet 201 is arranged at the side surface of the support rod 202, the support connecting rod 4 is in an arc-shaped bent shape and bends towards one side of the outer side surface of the drainage pipeline 1, the width of the support connecting rod 4 is one fourth of the width of the clamping sheet 201 and is made of polypropylene material, so that the clamping sheet 201 can be kept balanced, and the two ends of the connecting support rod 3 are movably clamped, connecting rod 3 is the form of buckling, connecting rod 3 buckles the orientation 1 outside surface of drainage tube, connecting rod 3 bottom surface center activity imbed in spacing port 106 is inside, connecting rod 3 width does two times of supporting rod 4 width, connecting rod 3 bottom surface center with spacing port 106 passes through the magnetic adsorption and connects, connecting rod 3 is made for nickel titanium memory alloy material, and the device of being convenient for supports stably, body 101 is threaded hose structure, body 101 is made for nickel titanium memory alloy material, is convenient for buckle, makes its convenience extend in the pancreatic duct, supporting mechanism 2 is the integrated into one piece structure for improve its structural strength, supporting mechanism 2 is made for the polypropylene material.

Example 2:

referring to fig. 7, a method for using the pancreatic ductal drainage stent includes the following steps:

s1, determining the length of the pipeline: the length of the tube body 101 is determined according to the length of the pancreatic duct, and other structures are fitted around the tube body 101.

S2, combination: the bent top end of the connecting support rod 3 is respectively clamped into the clamping groove 204, and the center of the bottom end of the connecting support rod 3 is clamped into the limiting port 106 and is magnetically adsorbed.

S4, adjustment: by moving the drainage support, the limiting groove 203 is attached to the convex part of the inner wall of the pancreatic duct, so that the drainage support is attached to the inner wall of the pancreatic duct more closely and firmly.

In summary, the present invention provides a pancreatic duct internal drainage stent and a method for using the same, when in use, the length of the drainage tube 1 can be selected according to the needs, the number of the support mechanisms 2 can be determined according to the length of the drainage tube 1, then the device can be placed at the position to be drained in the pancreatic duct of a patient through an operation, meanwhile, the limiting groove 203 can be matched with the convex part of the inner wall of the pancreatic duct of the patient through the arrangement of the clamping sheet 201 and the limiting groove 203 is arranged on the surface of the limiting groove, the clamping is tight, the device is fixed more firmly, meanwhile, the tube body 101 is arranged into a thread tubular structure, the device can be randomly bent in the pancreatic duct according to the needs, meanwhile, the support mechanisms 2 are arranged at equal intervals, the support mechanisms 2 can not interfere with the bending of the tube body 101, meanwhile, through the arrangement of the elastic reinforcing ribs 105, the elastic reinforcing ribs, make its coefficient of elasticity lower, easily deformation, when the joint piece 201 received excessive extrusion, accessible bracing piece 202 transmitted pressure for elasticity strengthening rib 105, made it take place deformation, inwards extended for supporting mechanism 2 can match patient's pancreatic duct inner wall more, can carry out the change of diameter as required.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a pancreas intraductal drainage support, includes drainage tube (1) and supporting mechanism (2), its characterized in that: the drainage pipeline (1) is of a cylindrical tubular structure, four support mechanisms (2) are movably clamped around the periphery of the top end of the drainage pipeline (1), the four support mechanisms (2) form a group, a plurality of groups of support mechanisms (2) are equidistantly arranged along the extending direction of the drainage pipeline (1), a support connecting rod (4) is arranged between every two adjacent support mechanisms (2), and a connecting support rod (3) is arranged between the support mechanisms (2);

the drainage pipeline (1) comprises a pipe body (101), drainage grooves (102) are formed in the side face of the pipe body (101), drainage holes (103) are uniformly formed in the bottom faces of the drainage grooves (102) at equal intervals, and limiting ports (106) are formed in the outer side surface of the pipe body (101) between every two adjacent drainage grooves (102) at equal intervals;

supporting mechanism (2) are including joint piece (201), joint piece (201) one sixth circular-arc structure, joint piece (201) bottom surface center vertical protrusion has bracing piece (202), bracing piece (202) are the cylinder structure, joint groove (204) have all been seted up at both sides surface center around joint piece (201).

2. The pancreatic intra-ductal drainage stent of claim 1, wherein said drainage grooves (102) are uniformly provided with four around the outer surface of said drainage tube (1), and said tube body (101) is provided with position-limiting fixing holes (104) on the surface between adjacent drainage grooves (102).

3. The pancreatic intraductal drainage support of claim 2, wherein an elastic reinforcing rib (105) is welded on the inner wall surface of the tube body (101) right below the position-limiting fixing hole (104), the elastic reinforcing rib (105) is in an arc-shaped sheet structure, two ends of the elastic reinforcing rib are welded on the inner wall surface of the tube body (101), and the elastic reinforcing rib (105) is woven by a nickel-titanium memory alloy wire.

4. The pancreatic intraductal drainage support of claim 3, wherein said tube (101) is fitted with said support rod (202), said support rod (202) is slidably inserted in the center of said tube (101), and the end of said support rod (202) is welded perpendicularly to the center of the inside surface of said elastic reinforcement (105).

5. The pancreatic intraductal drainage support of claim 4, wherein the top surface of the snap-on piece (201) is surrounded by a limiting groove (203), the limiting groove (203) is an arc groove body, and the snap-on piece (201) is rounded at both ends of the limiting groove (203).

6. The pancreatic intraductal drainage bracket of claim 5, wherein the drainage groove (102) is located in the center of the gap between two adjacent clamping plates (201), and the drainage hole (103) is located in the center of the bottom surface of the drainage groove (102).

7. The pancreatic ductal drainage stent of claim 6, wherein said support link (4) is fixedly welded between two adjacent said snap pieces (201), the connection point between said support link (4) and said snap pieces (201) is located at the side of said support rod (202), said support link (4) is curved and bent toward the side of the outer surface of said drainage tube (1), the width of said support link (4) is one fourth of the width of said snap pieces (201) and is made of polypropylene.

8. The pancreatic intraductal drainage stent of claim 7, wherein the connecting strut (3) is movably clamped at both ends in the clamping groove (204), the connecting strut (3) is bent to face the outer surface of the drainage tube (1), the center of the bottom surface of the connecting strut (3) is movably embedded in the limiting port (106), the width of the connecting strut (3) is twice of the width of the supporting link (4), the center of the bottom surface of the connecting strut (3) is connected with the limiting port (106) through magnetic adsorption, and the connecting strut (3) is made of nitinol.

9. The pancreatic intra-ductal drainage stent of claim 8, wherein said tubular body (101) is a threaded hose structure, said tubular body (101) is made of nitinol, said support means (2) is an integrally formed structure, and said support means (2) is made of polypropylene.