CN209268485U - A kind of fixable type catheter needle - Google Patents
A kind of fixable type catheter needle Download PDFInfo
- Publication number
- CN209268485U CN209268485U CN201821496254.7U CN201821496254U CN209268485U CN 209268485 U CN209268485 U CN 209268485U CN 201821496254 U CN201821496254 U CN 201821496254U CN 209268485 U CN209268485 U CN 209268485U
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- CN
- China
- Prior art keywords
- needle
- needle body
- fixing clamp
- utility
- catheter
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model relates to be related to a kind of fixable type catheter needle.The utility model structure is, in air bag is provided on the catheter needle lateral wall of hollow form, air bag connection inflatable interface and nut cap, fixing clamp clamping connection catheter needle, catheter needle is divided into needle body middle section, needle body endpiece, the micro- protuberance of needle body endpiece.The utility model overcome presently, there are be used only clinical transfusion needle carry out it is utterly routed perfusion cause easily to puncture left ventricle, aorta ascendens etc., cause the high failure rate of experiment, waste a large amount of animal lives and since antiseptic drug overflows in vitro from transfusion needle left ventricle cut, not flowing through body circulation effectively, the defects of perfusion effect is bad.The utility model is simple, convenient, greatly avoids the failure of perfusion, and perfusion effect can be made to reach most preferably, and scientific experiment is made to have preciseness and accuracy, and the utility model structure is simple, safe and reliable, applied widely.
Description
Technical field
The utility model relates to a kind of medical device, in particular to a kind of fixable type catheter needle.
Background technique
Leading force of the basic scientific research as medical advance, wherein zoopery has played irreplaceable role.And it moves
The formalin fixation of object sample is key technology, and usual blood flows to the right heart from venous return to atrium dextrum, then by atrium dextrum
Room carries out oxygen and carbon dioxide exchange subsequently into lung, then from lung sequentially enter atrium sinistrum, left ventricle, aorta ascendens, its
He flows into vein after arterial blood supplies oxygen at capillary to tissue by artery, turns again to atrium dextrum, forms blood circulation
Back and forth.The preservation and research of humans and animals remains require preservative treatment, and transfusion needle insertion left ventricle is usually taken or rises actively
Arteries and veins injects formalin and flows back into atrium dextrum along blood circulation inside body, and cuts off atrium dextrum, and outflow is external, is as perfused.
Before the present utility model, clinical transfusion needle still is used only without a set of special catheter needle equipment at present,
It is easy to puncture left ventricle, aorta ascendens etc., causes the high failure rate of experiment, waste a large amount of animal lives；Moreover, part
For zoological specimens since antiseptic drug overflows in vitro from transfusion needle left ventricle cut, there is no effectively flow through body circulation, perfusion effect
Fruit is bad, and tissue fixation is not complete, causes part protein degradation, brings significant errors and interference to experimental result, compromise scientific research
Preciseness and accuracy have a greatly reduced quality to clinical directive function, or even mislead.A kind of fixable type catheter needle is realized good
Antiseptic drug perfusion, fixing organization and albumen is conducive to save and is conducive to scientific research, becomes the urgent of basic scientific research.
Utility model content
The purpose of this utility model seeks to overcome drawbacks described above, develops a kind of fixable type catheter needle.
The technical solution of the utility model includes:
A kind of fixable type catheter needle, is mainly characterized by, in being provided on the catheter needle lateral wall of hollow form
Air bag, air bag connect inflatable interface and nut cap, fixing clamp clamping connection catheter needle.
The catheter needle is divided into needle body middle section, needle body endpiece, the micro- protuberance of needle body endpiece.
The fixing clamp is made of fixing clamp upper plate, fixing clamp lower plate, and fixing clamp upper plate is provided with needle body engaging groove, needle body
Bump is provided on engaging groove, fixing clamp lower plate endpiece is provided with card slot, matches with fixing clamp upper plate tail end.
The needle body engaging groove of the fixing clamp upper plate is matched with the needle body middle section of catheter needle.
Side opening is provided on the needle body endpiece of the catheter needle.
The advantages of the utility model and effect are that catheter needle top extends for needle body middle section and needle body endpiece；On fixing clamp
Plate is provided with needle body engaging groove；When catheter needle is inserted at left ventricle and aorta ascendens, needle body engaging groove can be bonded with needle body middle section
Connection, is fixed in heart, and inflate into air bag, on the one hand prevents catheter needle from skidding off left ventricle and aorta ascendens, another
The air bag of aspect expansion occupies left ventricle, can prevent antiseptic drug reflux from flowing into outside atrium sinistrum and heart；In addition, needle body endpiece
Micro- protuberance falls off backward prevented also from catheter needle self-retaining folder, skids off aorta ascendens and left ventricle, on the other hand can strut liter
Aorta prevents vessel wall elasticity to be covered in side opening；And catheter needle needle body endpiece is designed as blunt nosed, insertion left ventricle and liter active
Arteries and veins effectively avoids penetrating tissue；Side opening is able to achieve multi-faceted antiseptic drug outflow, prevents from being perfused unsmooth, and flow velocity is excessively slow
Slowly.All operations, it is simple, convenient, the failure of perfusion is greatly avoided, perfusion effect can be made to reach most preferably, make scientific experiment
Have preciseness and accuracy, the utility model structure is simple, safe and reliable, applied widely.
Detailed description of the invention
Fig. 1 --- the utility model catheter needle principle schematic diagram.
Fig. 2 --- the utility model fixed folder structure schematic illustration
Each label indicates that corresponding component names are as follows in figure:
Catheter needle 1, air bag 2, inflatable interface 3, nut cap 4, needle body middle section 5, needle body endpiece 6, side opening 7, fixing clamp 8, needle body
Engaging groove 9, fixing clamp upper plate 10, fixing clamp lower plate 11, card slot 12.
Specific embodiment
Below with reference to specific drawings and examples, the utility model is described in further detail.
It is as shown in Figure 1 and Figure 2:
The utility model includes catheter needle 1, air bag 2, inflatable interface 3, nut cap 4, needle body middle section 5, needle body endpiece 6, side opening
7, fixing clamp 8, needle body engaging groove 9, fixing clamp upper plate 10, fixing clamp lower plate 11, card slot 12；Mainly by air bag 2, needle body middle section 5
It is composed with needle body engaging groove 9.
Its structure are as follows:
Catheter needle 1 is in hollow form, and lateral wall is provided with air bag 2, and air bag 2 connects inflatable interface 3 and nut cap 4；From catheter needle
1 top is respectively downwards (in Fig. 1 from left to right on) needle body middle section 5 and needle body endpiece 6, the micro- protuberance of needle body endpiece 6, and is set thereon
It is equipped with side opening 7；Needle body middle section 5 is fitted and connected with needle body engaging groove 9；Fixing clamp 8 is by fixing clamp upper plate 10 and fixing clamp lower plate 11
Composition；Fixing clamp upper plate 10 is provided with needle body engaging groove 9, and bump, size and needle body middle section are provided on needle body engaging groove 9
5 shapes match, and 11 endpiece of fixing clamp lower plate is provided with card slot 12.
The utility model application process brief description:
When animal is perfused, using the end of the needle body endpiece 6 of catheter needle 1, successively passivity is inserted into left ventricle, aorta ascendens,
Nut cap 4 is opened, gas is injected from inflatable interface 3 to air bag 2, it is made to be filled in left ventricle；Meanwhile needle body being connect with fixing clamp 8
It closes slot 9 to be fitted and connected at the needle body middle section 5 of aorta ascendens, fixing clamp upper plate 10 is pasted with fixing clamp lower plate 11 by card slot 12
It closes and fixes；And atrium dextrum is cut off, allows intravenous fluid outflow external；The micro- protuberance of needle body endpiece 6, on the one hand can prevent needle body
Engaging groove 9 is fitted and connected more than needle body middle section 5, is caused side opening 7 is capped to stop, on the other hand can be strutted aorta ascendens, anti-hemostasis
Tube wall elasticity is covered in side opening.When perfusion, anti-corrosion medical fluid is flowed into from infusion strap from 1 top of catheter needle, in needle body endpiece 6 and
Side opening 7 enter aorta ascendens, successively after main artery, parteriole, arteriole-venule (tissue liquid exchange), veinlet, greatly
Vein, atrium dextrum, atrium dextrum notch, outflow are external；The setting of side opening 7 prevents catheter needle 1 from can not keep same with aorta ascendens
When straight line, arterial wall stops perfusion caused by needle body endpiece 6 unsmooth.
The utility model significantly reduces the failure rate of zoological specimens preservative treatment, and sample fixed effect is made to reach best
State saves the waste of fearless animal life, greatly improves the accuracy and confidence level of scientific research.
The utility model can take different shaped system, can be widely applied for basic medical scientific research according to different animals size,
It is safe and practical, simplify operation.
Claims (3)
1. a kind of fixable type catheter needle, which is characterized in that in air bag is provided on the catheter needle lateral wall of hollow form, air bag connects
Connect inflatable interface and nut cap, fixing clamp clamping connection catheter needle；Catheter needle is divided into needle body middle section, needle body endpiece；Needle body middle section and fixation
Press from both sides the needle body engaging groove matching of upper plate；The micro- protuberance of needle body endpiece, and be blunt nosed, and be provided with side opening.
2. a kind of fixable type catheter needle according to claim 1, which is characterized in that the fixing clamp is by fixing clamp
Plate, fixing clamp lower plate composition, fixing clamp upper plate is provided with needle body engaging groove, bump is provided on needle body engaging groove, fixed
Folder lower plate endpiece is provided with card slot, matches with fixing clamp upper plate tail end.
3. a kind of fixable type catheter needle according to claim 1 or 2, which is characterized in that the needle of the fixing clamp upper plate
Body engaging groove is matched with the needle body middle section of catheter needle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821496254.7U CN209268485U (en) | 2018-09-05 | 2018-09-05 | A kind of fixable type catheter needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821496254.7U CN209268485U (en) | 2018-09-05 | 2018-09-05 | A kind of fixable type catheter needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209268485U true CN209268485U (en) | 2019-08-20 |
Family
ID=67603310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821496254.7U Expired - Fee Related CN209268485U (en) | 2018-09-05 | 2018-09-05 | A kind of fixable type catheter needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209268485U (en) |
-
2018
- 2018-09-05 CN CN201821496254.7U patent/CN209268485U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190820 Termination date: 20200905 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |