CN1075391C - Medicinal liquid catheter of implanted medicine feeder able to prevent blood from reflux - Google Patents
Medicinal liquid catheter of implanted medicine feeder able to prevent blood from reflux Download PDFInfo
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- CN1075391C CN1075391C CN 95111397 CN95111397A CN1075391C CN 1075391 C CN1075391 C CN 1075391C CN 95111397 CN95111397 CN 95111397 CN 95111397 A CN95111397 A CN 95111397A CN 1075391 C CN1075391 C CN 1075391C
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- conducting tube
- medicine liquid
- catheter
- blood vessel
- otch
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Abstract
The present invention relates to a medical liquid catheter of an implanted medicine feeder capable of preventing the reflux of blood, which directly conveys medical liquid to the focus of infection in a blood vessel of a patient. The medical liquid catheter is made of elastic medical application materials, one end of the medical liquid catheter connected with the medicine feeder is a recess, and the other end of the medical liquid catheter is a smoothly transitional closed end and is also provided with a notch as a medical liquid outlet passage. The wall of the catheter is provided with a structure tying the catheter and the blood vessel together and a mark indicating the depth of the catheter being inserted into the blood vessel. The medical liquid catheter is mainly characterized in that the structure of the medical liquid catheter is particularly simple and can completely prevent the reflux of the blood into the catheter, and the medical liquid catheter brings convenience to the operation of a doctor and also avoids the slippage of the catheter from the notch of the blood vessel.
Description
The present invention relates to the medical apparatus and instruments in the implant into body, particularly relate to the medicine liquid conducting tube of implantation type doser.
The implantation type doser is to utilize thrust that the medicinal liquid in the syringe directly is injected into focal zone through inserting endovascular conduit, the drug level that makes this district surpasses the concentration at other positions beyond the focal zone over a period to come, thereby reach the raising therapeutic effect, can alleviate toxic side effects and minimizing drug dose that medicine brings to whole body again.Is to be positioned at blood vessel with medicinal liquid from the conducting tube that doser is input to focal zone always, executing loading liquid then is interrupted, thereby be to the requirement of conducting tube, when loading liquid is executed in treatment, medicinal liquid must inject focal zone from doser through conducting tube unblockedly, this also just requires conducting tube can prevent effectively that when stopping to execute loading liquid blood is back in the conducting tube under the effect of human blood-pressure, does not stop up for platelet adhesion and gathering.Otherwise not only do not reach its intended purposes, also will produce serious malpractice.Direct dispenser is current state-of-the-art in the world Therapeutic Method to internal lesions, and medicine liquid conducting tube is one of Primary Component of realizing this Therapeutic Method.The medicine liquid conducting tube of now more advanced in the world implantation type doser is that German Bei Lang (Braun Melschung) company produces, and its structure is shown in accompanying drawing one.This medicine liquid conducting tube comes into operation clinically.Remarkable insufficient place of this conducting tube is a complex structure, since conducting tube itself small-sized, the shaping processing difficulties, price is more expensive, and can not prevent fully that in use blood from refluxing, the local obstruction also can be taken place sometimes, the pressure of executing loading liquid of doser is increased.In addition, conducting tube has from the danger of blood vessel otch slippage in the process of using.Its another insufficient place is the doctor when implementing that conducting tube inserted vascular surgery, can not understand the degree of depth that conducting tube is inserted into blood vessel intuitively, and whether the blind end of conducting tube arrives focal zone.
It is very simple to the objective of the invention is to disclose a kind of structure to society, can prevent the implantation type doser medicine liquid conducting tube that blood refluxes again fully.
The technical measures of taking at purpose of the present invention are: conducting tube is made by whippy medical material, an end that is connected with doser is a port, the blind end that to insert an endovascular end be rounding off is processed with the otch as the medicine liquid outlet passage on the conduit wall of this end.The form of otch can be various forms, and promptly the direction of otch can be circumferential along catheter wall, also can with the conduit axially parallel, can also be angled, or otch is a non-linear with the conduit axis; Cut sides can the vertical conduit wall, also can be angled with the conduit wall; Otch can be symmetrical in the conduit axis, also can be asymmetric with the conduit axis; Can be a plurality of otch, also can be single otch.Reasonable form of cut or cuts is that cut sides is perpendicular to the conduit wall, cut-out direction is parallel to the conduit axis, a plurality of otch and be symmetrical in the conduit axis, and best form of cut or cuts be otch is an otch, this otch cut conduit blind end top to be divided equally and is symmetrical in the conduit axis.Because conduit is to be made by whippy material, conduit is under naturalness, and otch is in closed state under the resilient force of tube material, and the interior or exterior space of conduit is isolated.In conduit placed blood vessel, when focus was executed loading liquid, the pressure of medicinal liquid was washed the otch of sealing open to doser by conduit, and the medicinal liquid intravasation is transported to focus.When stopping to execute loading liquid, the pressure of medicinal liquid disappears, otch is under the effect of self elastic properties of materials power and the pressure effect of vessel inner blood sealing voluntarily again, prevented that effectively blood from entering in the otch and conducting tube as the medicine liquid outlet passage, avoided because hematoblastic adhesion and assemble conducting tube and medicine liquid outlet passage are stopped up.In addition, because the sealing of conducting tube top is the bullet-shaped of rounding off, very helps conducting tube and insert the blood vessel otch and extend affected area.
For the ease of enforcement of the present invention, the present invention has taked following technical measures:
Be provided with on the outside wall surface of conducting tube conducting tube and blood vessel are pricked knot structure together, the form of structure can be a convex ring, or the spill annular groove, or the versions of being convenient to tie up such as earplug.Binder structure by conducting tube makes conducting tube and blood vessel prick knot together, in case conducting tube skids off from the otch of blood vessel, causes malpractice.
In order to make the convenient enforcement of the present invention, the present invention has also taked following technical measures:
Be provided with on the conducting tube wall and indicate the cue mark that conducting tube inserts the blood vessel degree of depth, this cue mark preferably is the catheter length labelling of initial point with the conducting tube closed top end.
In order more advantageously to realize purpose of the present invention, the material of conducting tube preferably adopts the elastic modelling quantity that makes one section of the conducting tube closed top end elastic modelling quantity greater than other parts of conduit.
Compared with the prior art the present invention has following relatively more outstanding advantage:
1. simple in structure and can very prevent effectively that blood is back to and cause platelet adhesion in the conducting tube and assemble and stop up.Prevent that the structure that blood refluxes is actually the reflux valve that control blood refluxes.The present inventor has utilized the elasticity of conducting tube material itself dexterously, with the simple otch on the conducting tube closed top end as the reflux valve that prevents that blood from refluxing, structure is very simple, manufacture handling ease, producing cost is low, and can open and close exactly according to the requirement of executing loading liquid, thoroughly solve the blood backflow and stopped up the danger that conducting tube brings.
2. avoided conducting tube to skid off the malpractice of generation from the blood vessel otch fully.Because human body is moving always, the conducting tube outside wall surface is slick, and conducting tube itself has the trend that skids off from the blood vessel otch.In a single day conducting tube skids off from the blood vessel otch will cause serious malpractice, very dangerous.The present invention is used for conducting tube and blood vessel bundle knot structure together the design of conducting tube outside wall surface, can very easily conducting tube and blood vessel be pricked knot together, avoided conducting tube from the possibility that the blood vessel otch skids off, do not made the conducting tube distortion again, the medicinal liquid that influences in the conducting tube flows.The technical measures that also do not have this respect in the world in the prior art.
3, can observe the degree of depth that conducting tube inserts blood vessel intuitively, operation when being convenient to the doctor and implementing to perform the operation.Because design has the labelling of conducting tube length on the outside wall surface of conducting tube, the doctor is when implementing the intubate operation, and the doctor can recognize intuitively easily whether conducting tube is inserted into the degree of depth of blood vessel, arrive focal zone, this both had been convenient to doctor's operation, can improve the dispenser medical effect again.
4, conducting tube inserts an end of blood vessel, its end is the blind end of rounding off, shape resembles bullet, and the material hardness of the conduit that this is a part of is greater than the hardness of other part materials, these technical measures make conducting tube very easily insert blood vessel, have further improved convenience for the doctor implements to perform the operation.And the conduit of existing technology, the doctor implements to perform the operation then relatively more difficult when being inserted into blood vessel.
The present invention also has more otherwise advantages.After the present invention finishes, carry out the long clinical application of thousands of examples in the multiple case of how tame at home hospital, all obtained extraordinary medical effect, be subjected to doctor and patient's welcome and favorable comment.The appearance of present technique will have been pushed ahead a step again to this advanced person's of the direct dispenser of focus medical skill by the implantation type doser.
Accompanying drawing 1 is the structural representation of prior art conducting tube.
Accompanying drawing 2 is a kind of structural representations of the present invention.
Accompanying drawing 3 is another kind of structural representations of the present invention.
Accompanying drawing 4 is another structural representation of the present invention.
Provide embodiments of the invention below in conjunction with description of drawings, and this utility model is described in further detail.
Embodiment 1:
As shown in Figure 2.The medicine liquid conducting tube that supplies the implantation type doser to use that can prevent the blood backflow is made by whippy medical material, and the x ray can not penetrate, its end that is connected with doser is a port, the blind end 1 that to insert an endovascular end be rounding off, be processed with an otch 2 as the medicine liquid outlet passage on the catheter wall of the closed top end of this end, otch is divided closed top end equally and is symmetrical in the conduit axis.The conduit outer wall face is provided with pricks knot convex ring 4 together with conduit and blood vessel, in case conducting tube comes out from the slippage of blood vessel otch, causes malpractice.Convex ring 4 is provided with one from the closed top end of conducting tube every 50mm, and the protruding height of annulus is 0.5mm.The wall of conducting tube is provided with and indicates the cue mark 3 that conducting tube inserts the degree of depth in the blood vessel, and this cue mark is for from the conducting tube closed top end being conducting tube length mark initial point, be painted with a colored annulus every 10mm.The material hardness of conducting tube is uneven, and the hardness that the conducting tube closed top end is one section is easier to conducting tube and is inserted in the blood vessel from the blood vessel otch greater than the hardness of other parts.
Embodiment 2:
As shown in Figure 3.Be positioned near on the tube wall of closed top end as the otch 5 of conducting tube medicine liquid outlet passage, otch has two, symmetry and be parallel to the conducting tube axis.It is Baltimore groove 6 on the transporting tube wall that conducting tube and blood vessel are pricked knot structure together.Other technical measures are all identical with embodiment 1.
Embodiment 3:
As shown in Figure 4.Otch 7 as conducting tube medicine liquid outlet passage is positioned near on the tube wall of closed top end, and otch has two, is symmetrical in the conducting tube axis, and the direction of otch and conducting tube axis direction have an angle of cut.Conducting tube and blood vessel bundle knot are arranged on earplug 8 on the conducting tube outside wall surface in the structure that rises.The initial point of conducting tube length mark is from conducting tube closed top end 50mm place.Other technical measures are all identical with embodiment 1.
Embodiments of the present invention are not limited to the described several forms of the foregoing description, also can be designed to other form according to its invention thought.
Claims (9)
1, a kind of medicine liquid conducting tube that supplies the implantation type doser to use that prevents that blood from refluxing, make by whippy medical material, an end that is connected with doser is a port, it is characterized in that inserting an endovascular end blind end (1) that is rounding off, on the catheter wall of this end, be processed with otch (2,5,7) as the medicine liquid outlet passage.
2, medicine liquid conducting tube according to claim 1 is characterized in that the direction of the otch (2,5) as the medicine liquid outlet passage is parallel with the conduit axis direction.
3, medicine liquid conducting tube according to claim 2 is characterized in that the otch as the medicine liquid outlet passage is an otch (2) of closed top end being divided and is symmetrical in equally the conduit axis.
4, according to claim 1 or 2 or 3 described medicine liquid conducting tubes, it is characterized in that the conduit outer wall face is provided with to prevent that conduit from skidding off from the blood vessel otch, be convenient to prick the structure (4,6,8) of knot.
5, medicine liquid conducting tube according to claim 4 is characterized in that said bundle junction structure is the convex ring (4) on the conduit outer wall face.
6, medicine liquid conducting tube according to claim 4 is characterized in that the conducting tube wall is provided with the cue mark (3) that indicates the conducting tube insertion blood vessel degree of depth.
7, medicine liquid conducting tube according to claim 5 is characterized in that the conduit wall is provided with the cue mark (3) that indicates the conducting tube insertion blood vessel degree of depth.
8,, it is characterized in that cue mark that said conducting tube inserts the blood vessel degree of depth is for being the catheter length labelling of initial point with the conducting tube closed top end according to claim 6 or 7 described medicine liquid conducting tubes.
9, medicine liquid conducting tube according to claim 8 is characterized in that the elastic modelling quantity of the elastic modelling quantity of one section of conducting tube closed top end greater than other parts of conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95111397 CN1075391C (en) | 1995-06-09 | 1995-06-09 | Medicinal liquid catheter of implanted medicine feeder able to prevent blood from reflux |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95111397 CN1075391C (en) | 1995-06-09 | 1995-06-09 | Medicinal liquid catheter of implanted medicine feeder able to prevent blood from reflux |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1138490A CN1138490A (en) | 1996-12-25 |
| CN1075391C true CN1075391C (en) | 2001-11-28 |
Family
ID=5078694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95111397 Expired - Fee Related CN1075391C (en) | 1995-06-09 | 1995-06-09 | Medicinal liquid catheter of implanted medicine feeder able to prevent blood from reflux |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1075391C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7819842B2 (en) * | 2006-11-21 | 2010-10-26 | Medtronic, Inc. | Chronically implantable guide tube for repeated intermittent delivery of materials or fluids to targeted tissue sites |
-
1995
- 1995-06-09 CN CN 95111397 patent/CN1075391C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1138490A (en) | 1996-12-25 |
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