CN2155891Y - Esophagus support parts for human body - Google Patents

Abstract

The utility model relates to an esophagus support part used for the medical treatment of a human body. The utility model is rolled to form a spring-shaped structure. The utility model comprises a straight cylinder section and a taper tube section. The length of the straight cylinder section is from 30 mm to 50 mm, and the diameter of the straight cylinder section is from 8 mm to 14 mm; the length of the taper tube section is from 8 mm to 12 mm, and the taper of the taper tube section is 10: (2-3). The straight cylinder section and the taper tube section are connected in smooth transition, and the material of the straight cylinder section and the taper tube section is Ni-Ti alloy wires. The utility model has the advantages of reasonable structure, convenient manufacture, no anesthesia need in the course of the operation, small patients' pain, simple surgical operation, and favorable therapeutic efficacy. The utility model is convenient to take out, and uses the superiority of memory alloy. The utility model is widely used in the therapy of various esophageal stenosis diseases.

Description

Esophagus support parts for human body

This utility model relates to the esophagus supporting device that a kind of medical-therapeutic treatment of human body is used, and belongs to field of medical device technology.

Bring to esophagostenosis to many because of suffering from various diseases in the present medical clinical experiment, this disease is medically often adopted the balloon catheter expansion, increase gradually from the balloon catheter of less diameter, and when curing, also need take the hormone that is unfavorable for human body, this treatment mode tends to bring other disease to patient, and the esophagus after the expansion can not maintain the original state chronically, needs repeatedly to carry out esophagectasis repeatedly, brings bigger misery to patient.

Because human body esophagostenosis bougienage, air bag expansion does not all gather imitates and can bring a great difficult problem to the clinician can not perform the operation the time, people have worked out many esophagus supporting devices miscellaneous in view of the above, for example, the disclosed patent No. of Chinese patent is single chamber capsule esophagectasis pipe of 86209325, and this pipe is the polyethylene plastic hose that the treatment esophagostenosis is used, pipe is built-in with the enhancing seal wire, the pipe stage casing is one and expands capsule that when full, the diameter of different size can be respectively 5 millimeters to 20 millimeters.Tube wall can tolerate 3 atmospheric full pressure and not break and be out of shape.After under X line perspective, this pipe being lowered to narrow esophagus during use,, make the patient feel distending pain slightly, kept somewhere several minutes, promptly reach the expansion purpose with syringe injection contrast agent in pipe.The pipe of this expansion need inject contrast agent in use, and service routine is more miscellaneous, and is very inconvenient.And for example the patent No. is guide's esophageal dilator-Type B of 87214672, mainly is made up of Fructus Canarii albi head guide device, spring head guide device and bourdon tube dilator; The another kind of patent No. is 87201619 the soft type dilator of medical multifunctional, and its primary structure is made up of jaw type handle, cylinder flexible pipe, traction steel wire, lobe leaf, guider, contrast-medium injection pipe.These two kinds of medical dilators all are made up of many zero devices, and structure is complicated, use inconvenient.

The purpose of this utility model is to overcome the deficiencies in the prior art and provides a kind of simple in structure, human body easy to use esophageal branches support member.

Human body of the present utility model is realized by following manner with the esophageal branches support member: be the spring-like structures that is turned to by nitinol alloy wire, include direct tube section and Taper Pipe section, the length that it is characterized in that direct tube section is 30～50MM, diameter is 8～14MM, the length of Taper Pipe section is 8～12MM, its tapering is 10: (2～3), direct tube section and Taper Pipe section seamlessly transit.

Human body of the present utility model has following characteristics with the esophageal branches support member: simple in structure, compact, reasonable, easily manufactured, need not anesthesia in the use, patient's misery is little, operation is simple, therapeutic effect is good, convenient to remove, given full play to the advantage of memorial alloy, can be widely used in the palliative treatment of the multiple cicatricial stricture of esophagus, achalasia of the cardia, pylorus cicatricial stricture, esophagus anastomotic stenosis after surgery, late esophagus cancer etc., because its cost is lower, can pick out at random size with patient's PD.

For introducing architectural feature and the technology contents thereof of human body of the present utility model, be elaborated below in conjunction with accompanying drawing with the esophageal branches support member:

Fig. 1 is the sectional structure sketch map of human body of the present utility model with the esophageal branches support member;

Fig. 2 is the schematic top plan view of Fig. 1.

Referring to Fig. 1 and 2, esophageal branches support member of the present utility model is the spring-like structures that is turned to by nitinol alloy wire, include direct tube section 2 and Taper Pipe section 1, the length of direct tube section 2 wherein is 30～50MM, diameter is 8～14MM, the length of Taper Pipe section 1 is 8～12MM, and tapering is 10: (2～3), direct tube section 2 seamlessly transits with Taper Pipe section 1.

In conjunction with patient's different situations, preferred scheme is: the diameter of direct tube section is 10～12MM, and length is 30～35MM.The length of Taper Pipe section is 10MM, and the tapering of Taper Pipe section is 10: 2.5, and promptly the ratio of its length and radius difference is 10: 2.5, represents with angle a on figure, and promptly angle a is about 15 degree.

Human body of the present utility model is 0.59～0.72MM with the diameter of the nitinol alloy wire of esophageal branches support member.

The production method of this support member carries out in the following way: the one, adopt the winding of keeping straight on simultaneously of its two titanium-nickel wires, and one spacing is arranged between its bung flange; Another kind is to adopt a titanium-nickel wire compact winding, and spacing seldom between each bung flange.

This utility model is owing to adopt nitinol alloy wire to be entwined, and this alloy has its deliquescing in frozen water, the two-phase characteristic of hardening in the high temperature, and it moulds required shape under 500 degree high temperature, i.e. shape memory, alloy has no side effect to human body like this.

When inserting, in stomach tube, insert an angiography conduit, can pass through smoothly for making conduit.Insert another radiography conduit through patient's nasal cavity, its far-end is positioned at more than the esophagostenosis.For making support member can pass through narrow section smoothly, prepare one section internal diameter again and slightly be coarser than the plastic tube of stomach tube external diameter as advancing supporting role, this support member inserts with conduit, under fluoroscopic monitoring, make the mid point of support member be positioned at the mid point of stenosis, behind the location, inject hot water or allow patient oneself drink into hot water, support member can resile, and reaches the purpose of treatment.When inserting, can on conduit, turn to the spring shape thing of a minor diameter arbitrarily, be easy to pass through narrow section, during taking-up, because it is a single metal wire shape structure arranged in the shape of a spiral, it can be the wire hauling-out as long as under gastroscope, clamp a rhizoid with taking foreign body pincers or biopsy forceps, very easy to use.

So, human body of the present utility model is simple in structure, compact with the esophageal branches support member, reasonable, easily manufactured, need not anesthesia in the use, patient's misery is little, operation is simple, and therapeutic effect is good, and is convenient to remove, given full play to the advantage of memorial alloy, can be widely used in the palliative treatment of the multiple cicatricial stricture of esophagus, achalasia of the cardia, pylorus cicatricial stricture, esophagus anastomotic stenosis after surgery, late esophagus cancer etc.,, can pick out at random size with patient's PD because its cost is lower.

Claims (5)

1, a kind of human body esophageal branches support member, it is the spring-like structures that turns to by nitinol alloy wire, include direct tube section and Taper Pipe section, the length that it is characterized in that direct tube section is 30～50MM, diameter is 8～14MM, the length of Taper Pipe section is 8～12MM, and its tapering is 10:(2～3), direct tube section and Taper Pipe section seamlessly transit.

2, human body according to claim 1 esophageal branches support member, the diameter that it is characterized in that above-mentioned direct tube section is 10～12MM, length is 30～35MM.

3, human body according to claim 1 esophageal branches support member, the length that it is characterized in that above-mentioned Taper Pipe section is 10MM.

4, human body according to claim 1 esophageal branches support member, the tapering that it is characterized in that above-mentioned Taper Pipe section is 10: 2.5.

5, according to claim 1 or 2 or 3 or 4 described human body esophageal branches support members, the diameter that it is characterized in that above-mentioned nitinol alloy wire is 0.59～0.72MM.

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