CN110037837B

CN110037837B - Adaptive pancreatic duct support tube with variable tube diameter

Info

Publication number: CN110037837B
Application number: CN201910267166.2A
Authority: CN
Inventors: 钟跃思
Original assignee: Third Affiliated Hospital Sun Yat Sen University
Current assignee: Third Affiliated Hospital Sun Yat Sen University
Priority date: 2019-04-03
Filing date: 2019-04-03
Publication date: 2021-10-01
Anticipated expiration: 2039-04-03
Also published as: CN110037837A

Abstract

The invention discloses a variable-pipe-diameter self-adaptive pancreatic duct support pipe which comprises an outer pipe, wherein a central pipe and a plurality of outer peripheral pipes externally tangent to the central pipe are arranged in the outer pipe, the length directions of the central pipe and the outer peripheral pipes are the same as those of the outer pipe, the central pipe and the outer peripheral pipes are all made of elastic materials harmless to a human body, and a plurality of side holes are formed in the outer peripheral pipes. The stent tube is made of the elastic material, so that the stent tube can adapt to pancreatic duct diameters of different sizes by unwinding spiral expansion, and the multi-tube porous technology is adopted, so that the smooth drainage effect is effectively improved, the pancreatic leakage is effectively reduced, the effect is effectively ensured, and the occurrence of complications is reduced.

Description

Adaptive pancreatic duct support tube with variable tube diameter

Technical Field

The invention relates to the technical field of medical supplies, in particular to a self-adaptive pancreatic duct stent tube with a variable tube diameter.

Background

Pancreatoduodenectomy, also known as Whipple surgery (Whipple surgery), is an operative treatment for common bile duct middle and lower segment cancer, around ampulla of vater, duodenal malignant tumor, early pancreatic head cancer, severe pancreas and duodenal trauma, and other diseases. Pancreas duodenectomy has a large risk of operation and a high complication rate because of the removal of many organs and a plurality of anastomotic stoma (including pancreas enteroanastomosis, cholangioenteroanastomosis and gastrointestinal anastomosis). Among them, pancreatic leakage is a serious complication, even leading to massive intra-abdominal bleeding and death of the patient.

In response to the complication of pancreatic leakage, surgeons have performed numerous improvements in the manner of pancreaticostomy. The incidence of pancreatic leakage is reduced, but it is difficult to prevent pancreatic leakage. The pancreatic duct stent tube is placed to reduce the occurrence of pancreatic leakage, and the stent tube with the most suitable pancreatic duct tube diameter is placed with the best effect. However, because the pancreatic duct of each patient has different degrees of expansion and different diameters, at present, only the existing sputum suction tube and the like can be selected as the pancreatic duct stent tube, and the most suitable pancreatic duct stent tube for each patient is difficult to find clinically. Therefore, the manufacturing of the diameter-variable self-adaptive pancreatic duct stent tube is significant.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a self-adaptive pancreatic duct stent tube with a variable tube diameter.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the utility model provides a self-adaptation pancreatic duct support tube of variable pipe diameter, includes solid outer tube, be equipped with a center tube and a plurality of in the outer tube and surround the outer peripheryol pipe that the center tube set up, the length direction of center tube and outer peripheryol pipe all is the same with the outer tube, center tube and outer peripheryol pipe all adopt the harmless elastic material of human body to make.

Further, the support tube comprises a head end and a tail end, wherein the head end is provided with a side wall hollowed-out area, and the side wall hollowed-out area is a circle of chamfer arranged at the end of the outer tube head so that the side wall hollowed-out area is in a round table shape.

Further, the one end that the stake pipe is close to the lateral wall fretwork district is equipped with drainage portion, drainage portion is including setting up a plurality of side openings on the stake pipe, the side opening runs through the outer tube and communicates to in the periphery pipe.

Further, the elastic material is silica gel.

A use method of a variable-pipe-diameter self-adaptive pancreatic duct stent pipe comprises the following steps:

s1: manually twisting and shrinking the support tube to enable the support tube to be in a spiral twisting and shrinking state;

s2: a fixing steel bar with one end connected with a thin slide wire penetrates through the central pipe, and the end connected with the thin slide wire is arranged at the head end of the support pipe;

s3: binding the thin slide wire with the support pipe in a winding way from the head end of the support pipe, and tying the tail end of the support pipe to the other end of the fixed steel bar;

s4: inserting the head end of the bracket tube in a spiral screwing state into a pancreatic duct;

s5: the fine slide wire tied on the fixed steel bar is untied, and then the steel bar is slowly drawn out and taken out of the fine slide wire.

Further, the head end of the stent tube in the S4 is inserted into a pancreatic duct by 5cm-6 cm.

Further, the length of the fixing steel bar is longer than that of the support tube in a spirally twisted and contracted state.

Compared with the prior art, the invention has the following advantages:

the bracket tube is made of elastic materials, so that the bracket tube can realize compression on the tube wall of the pancreatic tube by unwinding expansion, thereby being self-adaptive to pancreatic tube diameters with different sizes, effectively improving the smooth drainage effect by a multi-tube porous technology, effectively reducing the occurrence of pancreatic leakage, simultaneously effectively ensuring the effect, and reducing the occurrence of complications.

Drawings

FIG. 1 is a schematic cross-sectional structure diagram of a variable-diameter adaptive pancreatic duct stent;

FIG. 2 is a schematic side view of a variable diameter adaptive pancreatic stent tube;

FIG. 3 is a schematic structural diagram of a twisted-contracted state of a variable-diameter adaptive pancreatic duct stent tube;

FIG. 4 is a schematic structural view of the adaptive pancreatic duct bracket tube with variable tube diameter after being fixed by a fixing steel bar

Description of reference numerals: 1. an outer tube; 11. a head end; 12. a tail end; 13. a sidewall hollow area; 2. a peripheral tube; 21. a drainage part; 22. a side hole; 3. a central tube; 4. fixing the steel bar; 41. and (5) thinning and sliding the wire.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Examples

As shown in fig. 1, a variable pipe diameter's self-adaptation pancreatic duct stake tube, including solid outer tube 1, run through in outer tube 1 and be equipped with a center tube 3 and six periphery pipes 2, the length direction of center tube 3 and periphery pipe 2 all is the same with outer tube 1, and periphery pipe 2 equipartition sets up in the periphery of center tube 3, and outer tube 1, center tube 3 and periphery pipe 2 all adopt the harmless elastic material of human body to make, adopt silica gel in this embodiment. The overall length of the support tube is set to be 12cm, the overall diameter is 8mm, the diameter of the central tube 3 is set to be 2.5mm, the diameter of the peripheral tube 2 is set to be 2mm, the support tube is required to be screwed and contracted firstly when in use, so that the support tube is in a spiral screwing and contracting state, the overall length of the support tube in the spiral screwing and contracting state is 9cm, and the overall diameter is 3 mm.

As shown in fig. 2, the support tube includes a head end 11 and a tail end 12, the length of the central tube 3 is longer than that of the outer tube 1, the end surface of the central tube 3 of the tail end 12 is flush with the end surface of the outer tube 1, the head end 11 is provided with a sidewall hollow area 13, and the sidewall hollow area 13 is a round chamfer arranged at the head end 11 of the outer tube 1, so that the sidewall hollow area 13 is in a circular truncated cone shape. The range of the sidewall hollow area 13 is about 1cm-2cm of the head end 11 of the support tube, and the head end 11 provided with the sidewall hollow area 13 aims to make the head end 11 of the whole support tube become sharp, so that the drainage effect of the support tube is enhanced while the support tube can be better inserted into a pancreatic duct, and the receiving area of the peripheral tube 2 is increased.

The one end that the mounting tube is close to lateral wall fretwork area 13 is equipped with drainage portion 21, and drainage portion 21 is including setting up a plurality of side openings 22 on the mounting tube on the circumferencial direction, and side opening 22 runs through outer tube 1 and communicates to in outer peripheral tube 2 for improve the effect of drainage, make its ability abundant drainage. The range of the drainage part 21 is a 4cm part of the head end 11 of the stent tube, and the part needs to be completely inserted into a pancreatic duct when in specific use so as to ensure the drainage effect.

As shown in fig. 3 and 4, when the fixing steel bar 4 is used, a fixing steel bar 4 is required to be used, the length of the fixing steel bar 4 is required to be a little longer than the length of the fixing steel bar in a screw-tightened state, and thus the fixing steel bar 4 has a length of 10cm and a diameter of 1mm, and one end of the fixing steel bar 4 is fixedly connected with a thin slide wire 41. The diameter of a normal pancreatic duct is about 2mm, the diameter of the pancreatic duct is gradually reduced from the head side to the tail side of the pancreas, and the wall of the pancreatic duct has certain extensibility. Therefore, the specific use method is as follows:

s1: manually screwing and shrinking the stent tube to a state that the diameter of the stent tube is smaller than that of the pancreatic tube so that the stent tube is in a spiral screwing and shrinking state;

s2: fixing the central tube 3 of the steel bar 4, and enabling one end connected with the thin slide wire 41 to be at the head end 11 of the support tube;

s3: binding the thin slide wire 41 to the bracket pipe from the head end 11 of the bracket pipe and tying the tail end 12 of the bracket pipe to the other end of the fixed steel bar 4;

s4: inserting the head end 11 of the bracket tube in a spiral screwing state into a pancreatic duct;

s5: the thin slide wire 41 tied to the fixing steel bar 4 is unwound, and then the steel bar is slowly drawn out and taken out of the thin slide wire 41.

Wherein in S1, earlier with the support tube through artificially twist it with it and contract, make it be in and twist the state that contracts, twist the direction that contracts and can be clockwise or anticlockwise, all can, do not influence direct use result, twist the support tube size after contracting and be diameter 3mm, length 9cm, the support tube cooperation support tube head end 11' S after contracting lateral wall fretwork district 13 can insert the pancreatic duct better.

In S2, it should be noted that the end of the fixing steel strip 4 with the thin slide wire 41 needs to be at the head end 11 of the bracket tube, so that the setting of the head end 11 of the bracket tube inserted into the pancreatic duct is not affected when the fixing steel strip 4 is taken out.

The purpose of S3 is to maintain the support tube in a spirally contracted state by the fixing steel rod 4, thereby winding the thin slide wire 41 on the fixing steel rod 4 around the support tube in the spirally contracted state. It should be noted that the binding direction of the thin slide wire 41 is required to be consistent with the screwing direction of the stent tube in S1, so as to ensure the binding and fixing effect.

S4 the head end 11 of the stent tube is inserted into the pancreatic duct in a screw-tightened state, and since the drainage portion 21 is 4cm of the head end 11 of the stent tube, the stent tube needs to be inserted 5cm to 6cm into the pancreatic duct to ensure the drainage effect of the stent tube, so as to ensure the drainage portion 21 is completely inserted into the pancreatic duct.

And finally S5, the thin slide wire 41 tied at the other end of the fixed steel bar 4 is only needed to be removed, and the bracket tube can self-adapt to pancreatic ducts with different apertures along with the self-uncoiling expansion, thereby achieving the effect of reducing the pancreatic leakage symptom and the complications thereof. After the thin slide wire 41 is released, the fixing steel bar 4 is pulled out.

The above embodiments are only for illustrating the technical concept 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 implement the present invention accordingly, and not to limit the protection scope of the present invention accordingly. All equivalent changes or modifications made in accordance with the spirit of the present disclosure are intended to be covered by the scope of the present disclosure.

Claims

1. The utility model provides a variable pipe diameter's self-adaptation pancreas pipe support pipe which characterized in that: the device comprises a solid outer pipe (1), wherein a central pipe (3) and a plurality of outer peripheral pipes (2) arranged around the central pipe (3) are arranged in the outer pipe (1), the length directions of the central pipe (3) and the outer peripheral pipes (2) are the same as those of the outer pipe (1), and the outer pipe (1), the central pipe (3) and the outer peripheral pipes (2) are all made of elastic materials harmless to a human body; the support tube comprises a head end (11) and a tail end (12), the head end (11) is provided with a side wall hollowed-out area (13), and the side wall hollowed-out area (13) is a circle of chamfer arranged at the head end (11) of the outer tube (1) so that the side wall hollowed-out area (13) is in a circular truncated cone shape; the steel pipe fixing device is characterized by further comprising a fixing steel bar (4) arranged in the middle of the central pipe (3), the length of the fixing steel bar (4) is longer than that of an outer pipe in a spiral screwing and shrinking state, and one end of the fixing steel bar (4) is fixedly connected with a thin sliding wire (41).

2. The variable caliber adaptive pancreatic duct stent of claim 1, wherein: one end of the support tube close to the side wall hollow area (13) is provided with a drainage part (21), the drainage part (21) comprises a plurality of side holes (22) arranged on the support tube, and the side holes (22) penetrate through the outer tube (1) and are communicated into the outer peripheral tube (2).

3. The variable caliber adaptive pancreatic duct stent of claim 1, wherein: the elastic material is silica gel.