CN105168005A

CN105168005A - Catheter

Info

Publication number: CN105168005A
Application number: CN201510589110.0A
Authority: CN
Inventors: 曹赞; 刘振茂
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-09-16
Filing date: 2015-09-16
Publication date: 2015-12-23

Abstract

The invention discloses a catheter which comprises a head end, a tube, a connector, a guide wire and a handle. One end of the tube is communicated with the head end, and the other end of the tube is connected with the connector; the guide wire movably stretches into the tube, the first end of the guide wire can stretch into the head end, and the second end of the guide wire movably penetrates through the connector and then is connected with the handle; the tube is made of full-imaging TPU raw materials, and the adding proportion of contrast media is 20%-50%. According to the catheter, the large flow in an inner cavity of the tube is guaranteed, and meanwhile the supporting property of the tube is good, so that the catheter can be conveniently placed; lubricating treatment is performed on the inner wall of the tube and the outer wall of the guide wire, therefore, the surfaces are smooth, tube blocking is prevented, the guide wire can be inserted and pulled smoothly, and the resistance is small; the head end adopts a side-cut liquid outlet, the resistance is small, and the liquid outlet quantity is large; the head end is in the shape similar to a bullet head, a circular arc surface serves as the stress surface when the catheter is placed, and therefore the mucosae can not be scratched; the head end is formed through insert molding, transition between the head end and the tube is smooth, and no step feel exists when the transition portion is touch with the hand.

Description

A kind of conduit

Technical field

The invention belongs to manufacture technology field of medical appliance, be specifically related to a kind of full radiography sub warhead conduit.

Background technology

Nasal gastrointestinal tube is assemblied by the conduit of unlike material and joint, general material has PVC, silica gel, rubber, TPU etc., and desired use nutritional solution or spoon meat via intranasal application is directly sent into stomach or intestines or to the cleaning of gastrointestinal portion, emptying, perfusion, decompression etc.Use procedure is as follows:

1, get all the ready with by thing to sick bed, check name, bed label, explain and obtain cooperation.

2, patient is assisted to get suitable position: to get semireclining position or seat; Open aseptic dish, treatment towel taken out under being placed in patient's jaw, kidney basin is placed in by cheek.

3, intubate is prepared: (1) wear glove.(2) check Nasal gastrointestinal tube situation.(3) guiding steel wire is inserted pipeline completely, steel wire end connection handle and Nasal gastrointestinal tube union joint are fixed.(4) check, clean nasal cavity, whether unobstructedly observe nasal cavity.(5) measure Nasal gastrointestinal tube intubating length: forehead hairline to ensiform process of sternum place or by nose through ear-lobe to the distance of ensiform process of sternum, make a labelling; A labelling is respectively done again in addition at outer 25cm and the 50cm place of mark.(6) get paraffin oil gauze lubricating nose gastrointestinal tube.

4, insert Nasal gastrointestinal tube pipe: (1) left hand is held gauze and held Nasal gastrointestinal tube, and the right hand is held tweezers and clamped Nasal gastrointestinal tube front end, insert gently along selected nostril, side.When Nasal gastrointestinal tube be inserted into 10 ?15cm (bottleneck throat) time, carry out intubate according to patient's concrete condition: 1. conscious patient: advise patient to do swallowing act, take advantage of a situation and Nasal gastrointestinal tube pushed ahead to first mark lengths.2. coma patient: patient head holds up by left hand, makes mandibular bone, near presternum, Nasal gastrointestinal tube is slowly inserted into first mark lengths.(3) as there is violent Nausea and vomiting in patient, should suspend insertion, advises patient to deeply breathe or mouth breathing, is inserted to first mark lengths after taking a momentary rest again.Intubate action should be gently steady, particularly by (esophagus is by diaphram place for cricoid cartilage level place, flat trachea crotch) during esophagus three stenosis, in order to avoid damage esophageal mucosa membrane injury.(4) check that whether Nasal gastrointestinal tube is tortuous in oral cavity with spatula.

5, first mark position at gastric, now should should verify that whether Nasal gastrointestinal tube is at gastric: connect syringe pump at Nasal gastrointestinal tube end, can extract gastric juice out; Nasal gastrointestinal tube end is placed in warm water, and bubble-free is overflowed; Put stethoscope in stomach, inject 10ml air through Nasal gastrointestinal tube to gastric fast with syringe, can gur gling be heard; Ideal method measures pH value to determine the position of pipeline by X-ray examination or extracting liquid.

6, confirm that Nasal gastrointestinal tube is after gastric, injects at least 20ml physiological saline solution, guiding steel wire is withdrawn from pipeline and is about 25cm in pipeline, continue intubate to the second mark, finally steel wire is all withdrawn from.Adopt the method for blindmate to be continued by Nasal gastrointestinal tube to deliver to the 3rd mark (noting observing the ordinary circumstance of patient), pumpback, if there is bile to extract out, then determines, in duodenum, now to fix.If spiral type Nasal gastrointestinal tube, Nasal gastrointestinal tube should be fixed on nose, and by unsettled for pipeline about 40cm, then Nasal gastrointestinal tube should be fixed on nearly ear-lobe portion.In the normal situation of digestive tract power, pipeline can 8 ?in 12 hours by pylorus, fix again after the 3rd labelling of pipeline arrives the nose of patient.

7, fixing: to adopt adhesive plaster to add the method that cinch dual fixes stomach tube, the method can reduce stomach tube and nutritive canal and to come off incidence rate.Nasal gastrointestinal tube end safety pin is fixed on bedside, large list or patient's collar place.

8, enteral nutrition can be carried out after correct by the position of X-ray examination determination pipeline.

9, tube drawing: (1) prepare before tube drawing: 1. first use physiological saline solution flushing pipe; 2. spread treatment towel under patient's jaw, put kidney basin under patient's cheek, unclamp safety pin, clamping Nasal gastrointestinal tube end (avoiding having residual liquid to enter trachea in the process withdrawing from pipeline), throws off fixing adhesive plaster and dribbling gently.(2) extract Nasal gastrointestinal tube: the Nasal gastrointestinal tube wrapping up nearly nostril place with gauze, pull out while wipe pipe with gauze, advise patient to deeply breathe, the tube drawing when patient exhales, extract fast to throat (residue about 15cm).(3) Nasal gastrointestinal tube is put into kidney basin, shift out patient's sight line, clean patient's mouth and nose, face, remove adhesive plaster vestige, assists patient to gargle, arrange Bed unit, take comfort position.

Mainly there is following shortcoming in the nasointestinal tube of current Clinical practice:

1, the success rate being directly inserted through pylorus is very low, and need by the wriggling of gastrointestinal self or the effect of gravity by pylorus, enter duodenum, jejunum, generally need wait 12 ?just can arrive at nutrition position in 24 hours, success rate is low.

2, nasointestinal tube head end structure mainly contains two kinds: one is that head end is remained silent plus side otch, and this mode is easier to cause body to block; Another kind is head end opening plus side otch, although this mode solves Partial Blocking problem, termination is larger to the stimulation of gastrointestinal wall in the process inserted, and easily causes damage.

Summary of the invention

For solving the problems referred to above that prior art exists, the invention provides a kind of conduit.

The present invention takes following technical scheme: a kind of conduit, comprises head end, pipe, joint, seal wire and handle, the head end described in the connection of one end of pipe, the joint described in other end connection of pipe; Described seal wire stretches in pipe movably, and the first end of seal wire can stretch into described head end, and the second end is connected with described handle through after joint movably; Pipe adopts full radiography TPU raw material to make, contrast agent adding proportion 20% ~ 50%.

Preferably, the inside of head end forms cavity, and external form is one-body molded by two sections, and one section nicked cylindric in side, and otch communicates with cavity, and another section is in cusp-shaped that is coniform or outer convex globoidal, and this section is closed, and the summit of this section is arc surface transition; One end end face of head end forms opening, and this opening communicates with cavity, the pipe described in this open communication.

Preferably, the outer wall of head end opening part is chamfering shape.

Preferably, pipe is printed with scale along its length.

Preferably, the internal-and external diameter ratio 0.58 ~ 0.68 of pipe.

Preferably, tube wall is through lubrication solution process.

Preferably, seal wire adopts stainless steel to make, and adopts 8-shaped winding.

Preferably, the seal wire one end stretching into head end is ellipsoid shaped.

Preferably, the surface of seal wire is through lubrication solution process.

Preferably, being configured to of lubrication solution: lubricating fluid: diluent=1:10 ~ 60.

Conduit of the present invention ensure that tube cavity large discharge, and the supportive of its pipe is good simultaneously, is convenient to put pipe; Tube wall, seal wire outer wall are through lubricated, and surface smoothness, prevents plugging, and seal wire plug is smooth, and resistance is little.The supportive of seal wire is good, is convenient to put pipe; Seal wire end is oval shape, welding, and the round dot comparing welding more can protect mucosa impaired, avoids guidewire tip to insert wound, scratch mucosa.Head end adopts side to cut liquid outlet, and resistance is little, and liquid outlet quantity is large; The similar sub warhead of head end shape, when putting pipe, stress surface is arc surface, can not scratch mucosa; And head end insert injection moulding, with pipe transitions smooth, hands is touched without step sense.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention.

Fig. 2 is the perspective view of head end.

Fig. 3 is another perspective view of head end.

Fig. 4 is the front view of head end.

Fig. 5 be Fig. 4 A ?A sectional view.

Fig. 6 is the structural representation of seal wire.

Fig. 7 is the A portion sectional view of Fig. 6.

Fig. 8 is the B portion enlarged drawing of Fig. 6.

Fig. 9 is the C portion enlarged drawing of Fig. 6.

Figure 10 is the work flow sketch of conduit.

In diagram, 1 ?head end, 2 – pipes, 3 – print scale, 4 – joints, 5 – seal wires, 6 – handles.

Detailed description of the invention

Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is elaborated.

As figure 1 ?shown in 9, the full angiography catheter of the present embodiment comprises head end 1, pipe 2, joint 4, seal wire 5, handle 6, and pipe 2 is printed with scale 3 along its length.

One end of pipe 2 connects head end 1, the inside of head end 1 forms cavity, external form is formed by two sections, one section in side straps otch 1 ?1 cylindric, the cusp-shaped (this end also can be coniform) of another section 1 ?3 in outer convex globoidal, the summit 1 of tip ?3 ?1 in arc surface transition, this section is closed.Otch 1 ?1 to extend along the length direction of head end 1, communicate with cavity.One end end face of head end 1 forms opening 1 ?2, and this opening communicates with internal cavities, and it is communicated with pipe 2.The outer wall of head end opening part is chamfering shape, so that pipe 2 seamlessly transits.Head end 1 adopts side to cut liquid outlet, and resistance is little, and liquid outlet quantity is large.Head end insert injection moulding, with pipe 2 transitions smooth, hands is touched without step sense.The similar sub warhead of global shape of head end 1, when putting pipe, its stress surface is arc surface, can not scratch the wounded mucosa.

The other end grafting joint 4 of pipe 2.Pipe 2 adopts full radiography TPU raw material (to irradiate at hospital's X-ray, conduit presents white on X imaging film, catheter position is determined under X-ray) make, contrast agent adding proportion 20% ~ 50% (is weight ratio herein, contrast agent is as barium sulfate, its furnishing suspension to be swallowed or coloclysis is used for gastrointestinal image), contrasting effects is good; The internal-and external diameter ratio 0.58 ~ 0.68 of pipe 2, can ensure inner chamber large discharge, and tube supports is better simultaneously, is convenient to put pipe; Tube wall is through lubricated, and surface smoothness, prevents plugging.The lubricated solution allocation adopted is lubricating fluid: (be weight ratio, lubricating fluid can select medical dispersion liquid herein in diluent=1:10 ~ 60; Diluent can select medical grade volatile silicone oils).

The built-in movable seal wire 5 of pipe 2, seal wire adopts stainless steel to make, and it can be antirust, and tube supports is good, is convenient to put pipe.Seal wire 5 adopts 8-shaped winding, and to reduce and tube wall friction, surface is through above-mentioned lubrication solution process, and extract smooth, resistance is little.Head end 5 ?1 of seal wire 5 is in ellipsoid shaped, and welding, the round dot comparing welding more can protect mucosa impaired, avoids seal wire head end to insert wound, scratch mucosa.The head end 5 of seal wire ?1 opening and the internal cavities that can stretch into head end 1.The other end of seal wire, movably through after joint 4, is connected with handle 6.

See Figure 10, the course of processing of the present embodiment conduit:

1, pipe 2 puts into mould after assembling core rod, directly adds raw material injection moulding, and head end 1 and pipe 2 combine together;

2, according to the length of pipe 2 practice, pipe 2 is cut;

3, the other end jointing 4 of pipe 2;

4, pipe 2 is carried out to the printing of scale 3; Meanwhile, lubrication solution is prepared: lubricating fluid: diluent=1:10 ~ 60;

5, the inwall of pipe 2 is carried out to the process of lubrication solution; The outer wall of seal wire 5 is carried out to the process of lubrication solution simultaneously;

6, insert in pipe 2 by seal wire 5, its ellipsoid head and head end 1 are in same one end, and the other end through after joint 4, is connected with handle 6 movably.

Above the preferred embodiments of the present invention and principle are described in detail, for those of ordinary skill in the art, according to thought provided by the invention, detailed description of the invention will change, and these changes also should be considered as protection scope of the present invention.

Claims

1. a conduit, comprises head end, pipe, joint, seal wire and handle, the head end described in the connection of one end of pipe, the joint described in other end connection of pipe; Described seal wire stretches in pipe movably, and the first end of seal wire can stretch into described head end, and the second end is connected with described handle through after joint movably; It is characterized in that: described pipe adopts full radiography TPU raw material to make, contrast agent adding proportion 20% ~ 50%.

2. conduit as claimed in claim 1, it is characterized in that: the inside of described head end forms cavity, external form is one-body molded by two sections, one section nicked cylindric in side, otch communicates with cavity, another section is in cusp-shaped that is coniform or outer convex globoidal, and this section is closed, and the summit of this section is arc surface transition; One end end face of head end forms opening, and this opening communicates with cavity, the pipe described in this open communication.

3. conduit as claimed in claim 2, is characterized in that: the outer wall of head end opening part is chamfering shape.

4. conduit as claimed in claim 1, is characterized in that: pipe is printed with scale along its length.

5. the conduit as described in claim 1 or 2 or 4, is characterized in that: the internal-and external diameter ratio 0.58 ~ 0.68 of pipe.

6. conduit as claimed in claim 1, is characterized in that: tube wall is through lubrication solution process.

7. conduit as claimed in claim 1, is characterized in that: seal wire adopts stainless steel to make, and adopts 8-shaped winding.

8. the conduit as described in claim 1 or 7, is characterized in that: the seal wire one end stretching into head end is ellipsoid shaped.

9. conduit as claimed in claim 1, is characterized in that: the surface of seal wire is through lubrication solution process.

10. the conduit as described in claim 6 or 9, is characterized in that: being configured to of lubrication solution: lubricating fluid: diluent=1:10 ~ 60.