CN2778310Y - Endocardium injection catheter - Google Patents
Endocardium injection catheter Download PDFInfo
- Publication number
- CN2778310Y CN2778310Y CN 200520000175 CN200520000175U CN2778310Y CN 2778310 Y CN2778310 Y CN 2778310Y CN 200520000175 CN200520000175 CN 200520000175 CN 200520000175 U CN200520000175 U CN 200520000175U CN 2778310 Y CN2778310 Y CN 2778310Y
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- CN
- China
- Prior art keywords
- outer tube
- endocardium
- pipe
- injection catheter
- syringe needle
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- Expired - Lifetime
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Abstract
The utility model discloses an endocardium injection catheter which comprises a soft outer tube with strong supporting force and a soft inner tube, wherein the outer tube comprises a sheath tube sleeve, an outer tube body, a secondary bending part and a pinhead outlet, wherein the sheath tube sleeve is arranged at the tail end of the outer tube, the secondary bending part is arranged at the front end of the outer tube, the pinhead outlet is arranged at the end part of the secondary bending part and the pinhead outlet forms an included angle of 90 DEG with the outer tube body. The soft inner tube is a bit longer than the outer tube and is arranged in the outer tube, and the inner tube comprises a connecting tube sleeve arranged at the tail end of the inner tube, an inner tube body and a pinhead arranged at the front end of the inner tube. In the utility model, because the supporting force of the outer tube is strong, the endocardium injection catheter is beneficial for the inner tube which is pushed and withdrawn in the endocardium injection catheter. Because the outer tube has definite soft performance, the endocardium injection catheter is beneficial for traveling in a human body and is also easy to tightly contact an endocardium. The inner tube is soft corresponding to the outer tube, can be adjusted and is easy to stretch in the outer tube and is beneficial for adjusting direction and injection depth. The utility model has the advantages of simple manufacturing method and low cost.
Description
Technical field
This utility model relates to Medical Instruments, particularly relates to a kind of endocardium injection catheter.
Background technology
Myocardial infarction, chronic heart failure, cardiomyopathy, conducting system of heart disease have a strong impact on people's living standard and life-span; Research data shows, myocardial cell generation locality or diffuse necrosis, fibrosis can cause cardiac function to descend, and sophisticated myocardial cell lack regeneration capacity.At present, clinical shortage is at the essence Therapeutic Method of cardiac muscle regeneration, reconstructing blood vessel, and the cell replacement treatment is arisen at the historic moment and become an ideal therapeutic strategy, for the patient of various advanced heart diseases has brought a gleam of hope; One of key link is the approach that cell, the factor, medicine etc. are implanted cardiac muscle in the cell replacement treatment, and thereby the main purpose of selecting the implantation approach is to reduce graft and returns sanguimotor quantity and reduce and lose, be beneficial to the going back to the nest, settle down and breed of the myocardial sites of needs reparation, locally assemble and then integrate with host's myocardial cell, harmonious on the function, and the performance therapeutical effect.
At present, main method for implantation has: in (1) PTCA and the Stent or postoperative, through over the wire (OTW) foley's tube at the relevant coronary artery distal injection of infarction; (2) endocardial mapping system guiding percutaneous endocardium injection down down; (3) surgical operation is opened breast direct-view simultaneously and is injected in the visceral pericardium cardiac muscle target cardiac muscle surrounding zone down; (4) peripheral intravenous injection.
In the said method, venoclysis wound minimum, but owing to do not impel the effective ways to the selectively targeted chemotactic of cardiac muscular tissue such as cell, the factor, medicine at present, the effectiveness of this method only depends on the ability of going back to the nest of graft, and therapeutic effect need studies confirm that.The visceral pericardium injection is applicable to the essential operating heart patient of acceptance.Preceding two kinds are interventional method, are that most patient finally is easy to the Therapeutic Method accepted, though relevant injection of coronary artery can prevent that graft from directly backflowing to aorta, still have part to run off after directly entering coronary artery circulation; And endocardium injection avoids the deficiency of above-mentioned three kinds of methods, advantage to be and can accurately to locate, and the graft easier direct target approach zone of need not trudging is more conducive to chemotactic factor play a role; But the endocardium injection still can't extensively be promoted, and its reason is not have now the appearance of cheap sophisticated endocardium injection catheter.
The innovation and creation content
The purpose of this utility model provides a kind of simple in structure, with low cost, endocardium injection catheter of being easy to extensive use.
For achieving the above object, this utility model is taked technical scheme: a kind of endocardium injection catheter, it includes: the flexible outer tube that a support force is strong, the syringe needle outlet that outer tube includes and be arranged on its terminal sheath pipe box, outer tube body, be arranged on the secondary bending section of its front end and be arranged on secondary bending section end, the axial of described syringe needle outlet and outer tube body becomes 90 to spend angles; One more softish interior pipe, its more described outer tube is slightly long, and is arranged in the described outer tube syringe needle that interior pipe includes the connection pipe box that is arranged on its end, interior pipe body and is arranged on its front end.
In the above-mentioned endocardium injection catheter, the diameter of described interior pipe is than the little 2F of described outer tube.
In the above-mentioned endocardium injection catheter, described interior pipe comprises that the length of syringe needle is than described outer pipe range 25mm.
In the above-mentioned endocardium injection catheter, described in the pipe body be provided with scale in corresponding position with the sheath pipe box of outer tube end.
In the above-mentioned endocardium injection catheter, described scale includes positive scale, zero graduation and negative scale.
In the above-mentioned endocardium injection catheter, the length of described syringe needle is 5mm.
This utility model is owing to take above design, and it has the following advantages: 1, in this utility model because the outer tube support force is stronger, in helping pipe therein propelling movement and recall; Because outer tube has certain flexibility, help it and in human body, walk again, also closely contact with endocardium easily.2, in this utility model, interior pipe is soft relatively more, can adjust with comparalive ease inner telescoping tube outside, helps adjusting direction and injection depth.3, in this utility model, selected syringe needle is tiny, and is less to myocardial damage.4, this utility model manufacture method is simple, and is with low cost, is easy to extensive use.
Description of drawings
Fig. 1 is the structural representation of this utility model outer tube
Fig. 2 is the structural representation of pipe in this utility model
The traveling of Fig. 3 conduit that is this utility model when endocardium of left ventricle and endocardium of right ventricle injection, contact with endocardium and myocardium in the structural representation injected
Fig. 4 is pack into overall structure sketch map in the outer tube of pipe in this utility model
The specific embodiment
As Fig. 1, Fig. 2, shown in Figure 4, a kind of endocardium injection catheter, it includes: the flexible outer tube 1 that a support force is strong, the syringe needle outlet 14 that outer tube 1 includes and is arranged on its terminal sheath pipe box 11, outer tube body 12, is arranged on the secondary bending section 13 of its front end and is arranged on secondary bending section 13 ends, because the setting of secondary bending section 13, make the axial of syringe needle outlet 14 and outer tube body 12 become 90 to spend angles; One more softish interior pipe 2, it is slightly long than outer tube 1, and is arranged in the outer tube 1 syringe needle 23 that interior pipe 2 includes the connection pipe box 21 that is arranged on its end, interior pipe body 22 and is arranged on its front end.
In the present embodiment, syringe needle 23 long 5mm, interior pipe 2 comprise that the length of syringe needle 23 is than outer tube 1 long 25mm.And interior pipe body 22 is provided with scale 3 in the corresponding position with the sheath pipe box 11 of outer tube 1 end, and scale 3 includes positive scale 31, zero graduation 32 and negative scale 33; Wherein positive scale 31 includes the scale of 5mm, 10mm, 15mm, 20mm, 25mm, and negative scale 33 includes-10mm ,-scale of 5mm, and zero graduation is over against the ora terminalis of sheath pipe box 11 ends.In the above-mentioned scale, the distance that positive scale value 31 expression syringe needles 23 stretch out outer tube 1, the opening of front end when zero graduation 32 expression syringe needles 23 have just been withdrawn outer tube 1, the distance of negative scale value 33 expression syringe needles 23 withdrawal outer tubes 1, scale is accurate to 1mm.(French, 1F=0.333mm), after interior pipe 2 was inserted in outer tube 1, activity prevented that also the two diameter from differing too big, causes oozing of blood to the diameter of interior pipe 2 before and after being easy to like this than outer tube 1 little 2F.
In general, the length of secondary bending section, secondary bending can be designed to different length according to the diameter of outer tube is different, and such as the outer tube of 6F, the length of secondary bending section is 35mm; The outer tube of 7F, the length of secondary bending section are 40mm; The outer tube of 8F, the length of secondary bending section are 60mm; And outer length of tube generally is controlled at 100-125cm.
The outer tube 1 in the foregoing description and the material of interior pipe 2 are polyurethane, and it is light tight under X-ray, therefore the operational observations that helps performing the operation.
Before outer tube 1 is sent in the body, in pipe 2 syringe needle 23 must withdraw fully in the outer tube 1, scale 3 reference values of interior pipe 2 tail ends are value-7, operation should note pushing outer catheter 1 when sending in the body, and give much attention to interior scale 3 of managing 2 tail ends, determine to remain scale value in～7 scope.As shown in Figure 3, after outer tube 1 enters ventricle 4,5, adjust outer tube head end 15 and point to the position that will inject, continue to push outer tube 1, outer tube head end 15 and ventricle wall are adjacent to, visible outer tube head end 15 keeps certain tension force under the X-ray; Interior pipe is terminal by connecting the syringe of pipe box 21 connections, after pumpback has obvious resistance and does not see blood back, slowly send into interior pipe 2 and judge injection depths according to the positive scale 31 of its tail end, for safety, syringe needle 23 length of this utility model design are 5mm, be the maximum injection degree of depth about 5mm, also can according to circumstances select different needle length to finish the endocardium injection of different depth; When shifting the injection site, returning earlier and removing interior pipe 2 to scale value is-7, guarantees in the syringe needle 23 complete retraction outer tubes 1, adjusts outer tube head end 15 and makes it point to the injection site, and pumpback manages 2 to desired depth in sending into again; Behind the complete operation the same elder generation return remove in pipe to scale value be-7, guarantee in the syringe needle 23 complete retraction outer tubes 1, after injection catheter integral body is withdrawn from the body.
Below, lift a specific embodiment, specify use of the present utility model as follows:
1, routine disinfection site of puncture, Seldinger ' s technology routine is set up vascular access; The capable left ventricle inner membrance injection of the femoral artery that punctures as required, the capable right ventricle inner membrance injection of puncture femoral vein.
2, interior pipe box is gone in the outer tube, in making in the syringe needle withdrawal outer tube of pipe front end, interior pipe tail end scale be the best with-7 specifically between-5 to-10mm, and assurance is sent in the injection catheter process, and syringe needle is in outer tube, in order to avoid injure blood vessel in the conduit traveling on the way.
3, the vagina vasorum pipe of injection catheter after puncture of adjusting sent in the body, X line perspective is sent into injection catheter down gradually, enter left ventricle or right ventricle through aorta or postcava, send and note in the injection catheter process pushing outer tube, the scale of pipe should remain between-5 to-10mm in noting simultaneously, guarantee that syringe needle is hidden in the outer tube, the terminal syringe that connects.
4, perspective is selected the injection site down, outer tube head end definite object cardiac muscle, the cardioelectric monitor premature ventricular beat that as seen takes place frequently when contacting with endocardium continues to send into slightly forward outer tube and makes the crooked certain force of strain that keeps of head end, determine once more errorless after, left hand is outer tube fixedly, pipe was to the zero graduation place in the right hand was sent into gradually, and pipe 1～2mm in continuing to be fed under the X line is not after blood back is seen in the syringe pumpback, interior pipe is delivered to scale at the 5mm place, and injection depth is at 5mm in theory.According to decision injection depths such as different situations such as chamber wall thickness, selection injection ventricles.
5, the medicine of extraction needs injection, cell, the factor etc. are injected desired dosage as required.Tight electrocardio, the pressure monitoring observed should carry out under perspective in the injection process.
6, after injection is finished, return earlier remove in pipe to scale between-5 to-10mm, guarantee that syringe needle is withdrawn in the outer tube, recall integral duct again, select other positions to proceed to inject next time, notice that each operating procedure is to send outer tube earlier, send interior pipe again; Remove interior pipe earlier, withdraw from integral duct more together.
7, after all operations is finished, interior pipe is withdrawn in the outer tube, again integral duct is withdrawn from external.
Claims (8)
1, a kind of endocardium injection catheter is characterized in that it includes:
The flexible outer tube that one support force is strong, the syringe needle outlet that outer tube includes and be arranged on its terminal sheath pipe box, outer tube body, be arranged on the secondary bending section of its front end and be arranged on secondary bending section end, the axial of described syringe needle outlet and outer tube body becomes 90 to spend angles;
One more softish interior pipe, its more described outer tube is slightly long, and is arranged in the described outer tube syringe needle that interior pipe includes the connection pipe box that is arranged on its end, interior pipe body and is arranged on its front end.
2, endocardium injection catheter according to claim 1 is characterized in that: the diameter of pipe is than the little 2F of described outer tube in described.
3, endocardium injection catheter according to claim 1 is characterized in that: pipe comprises that the length of syringe needle is than described outer pipe range 25mm in described.
4, endocardium injection catheter according to claim 2 is characterized in that: pipe comprises that the length of syringe needle is than described outer pipe range 25mm in described.
5, according to claim 1 or 2 or 3 or 4 described endocardium injection catheters, it is characterized in that: the pipe body is provided with scale in the corresponding position with the sheath pipe box of outer tube end in described.
6, endocardium injection catheter according to claim 5 is characterized in that: described scale includes positive scale, zero graduation and negative scale.
7, according to claim 1 or 2 or 3 or 4 or 6 described endocardium injection catheters, it is characterized in that: the length of described syringe needle is 5mm.
8, endocardium injection catheter according to claim 5 is characterized in that: the length of described syringe needle is 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520000175 CN2778310Y (en) | 2005-01-13 | 2005-01-13 | Endocardium injection catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520000175 CN2778310Y (en) | 2005-01-13 | 2005-01-13 | Endocardium injection catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2778310Y true CN2778310Y (en) | 2006-05-10 |
Family
ID=36752398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520000175 Expired - Lifetime CN2778310Y (en) | 2005-01-13 | 2005-01-13 | Endocardium injection catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2778310Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109364349A (en) * | 2018-11-30 | 2019-02-22 | 宁波迪创医疗科技有限公司 | A kind of device for being auxiliarily fixed |
| CN111631811A (en) * | 2020-06-24 | 2020-09-08 | 绍兴梅奥心磁医疗科技有限公司 | Method and device for obtaining contact force of head end of flexible magnetic conduit |
| CN114949391A (en) * | 2022-05-24 | 2022-08-30 | 四川大学华西医院 | Device for removing retention in alimentary canal |
| CN115337525A (en) * | 2022-08-25 | 2022-11-15 | 中国人民解放军东部战区总医院 | Radial length adjustable cerebrovascular angiography catheter and angiography method |
| US11926645B2 (en) | 2020-08-27 | 2024-03-12 | Gilead Sciences, Inc. | Compounds and methods for treatment of viral infections |
-
2005
- 2005-01-13 CN CN 200520000175 patent/CN2778310Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109364349A (en) * | 2018-11-30 | 2019-02-22 | 宁波迪创医疗科技有限公司 | A kind of device for being auxiliarily fixed |
| CN111631811A (en) * | 2020-06-24 | 2020-09-08 | 绍兴梅奥心磁医疗科技有限公司 | Method and device for obtaining contact force of head end of flexible magnetic conduit |
| CN111631811B (en) * | 2020-06-24 | 2022-03-29 | 绍兴梅奥心磁医疗科技有限公司 | Method and device for obtaining contact force of head end of flexible magnetic conduit |
| US11926645B2 (en) | 2020-08-27 | 2024-03-12 | Gilead Sciences, Inc. | Compounds and methods for treatment of viral infections |
| CN114949391A (en) * | 2022-05-24 | 2022-08-30 | 四川大学华西医院 | Device for removing retention in alimentary canal |
| WO2023226769A1 (en) * | 2022-05-24 | 2023-11-30 | 四川大学华西医院 | Apparatus for removing retention substances in digestive tract |
| CN114949391B (en) * | 2022-05-24 | 2024-01-26 | 四川大学华西医院 | Device for removing retention substances in alimentary canal |
| CN115337525A (en) * | 2022-08-25 | 2022-11-15 | 中国人民解放军东部战区总医院 | Radial length adjustable cerebrovascular angiography catheter and angiography method |
| CN115337525B (en) * | 2022-08-25 | 2024-02-02 | 中国人民解放军东部战区总医院 | Radial length adjustable cerebral angiography catheter and angiography method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: SOUTH CHINA CENTER FOR STEM CELL BIOLOGY AND REGENERATIVE MEDICINE OF ACADEMY OF MILITARY MEDICAL SCIENCES Assignor: Inst. of Field Blood Transfusion, Academy of Military Medical Sciences, PLA Contract record no.: 2014990000846 Denomination of utility model: Endocardium injection catheter Granted publication date: 20060510 License type: Exclusive License Record date: 20141104 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150113 Granted publication date: 20060510 |