CN202569139U - Medical catheter - Google Patents
Medical catheter Download PDFInfo
- Publication number
- CN202569139U CN202569139U CN 201220118975 CN201220118975U CN202569139U CN 202569139 U CN202569139 U CN 202569139U CN 201220118975 CN201220118975 CN 201220118975 CN 201220118975 U CN201220118975 U CN 201220118975U CN 202569139 U CN202569139 U CN 202569139U
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- CN
- China
- Prior art keywords
- medical catheter
- spring
- trocar sheath
- tube wall
- embedded
- Prior art date
- 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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Abstract
The utility model discloses a medical catheter. The medical catheter comprises a wrapper tube and a spiral spring, wherein the wrapper tube is made of plastic materials with shape memorizing property, and the spiral spring made of metal materials is embedded in the tube wall of the wrapper tube. The wrapper tube comprises a cylindrical part and a conical part connected to one end of the cylindrical part, and the spiral spring comprises a cylindrical part spring and a conical part spring, wherein the cylindrical part spring is embedded in the tube wall of the cylindrical part, and the conical part spring is embedded in the tube wall of the conical part. The medical catheter is used for infusion of block anesthesia medicine to epidural space or drug liquid transfusion or blood transfusion or other transfusion. The medical catheter is simple in structure, and has the advantages that elasticity and biocompatibility are good, tension force is large, the drug liquid infusion or the other transfusion or the blood transfusion is smooth, the quality of the medical catheter is safe and reliable, the medical catheter has the shape memorizing property, and the like. In addition, the medical catheter can be placed inside a human body in a long period, and an ordinary epidural space catheter is safely replaced.
Description
[technical field]
The present invention relates to a kind of medical apparatus and instruments, especially a kind of medical catheter.
[background technology]
Epidural block anesthesia is most popular clinically anesthesia; Promptly through after puncturing with anesthesia spinal needle; Import conduit in epidural space along the tract of anesthesia spinal needle, import medicine such as anesthetics then and block, thereby reach the purpose of anesthesia.Usually the conduit that is used for anaesthetizing clinically all is to adopt PVC or nylon material to make, and the cone point of conduit is sharper, poor flexibility; Tension force is little, and tube material does not have shortcomings such as Memorability, when clinical use; Be injected into anaesthetic outside the epidural space easily but not produce anesthetis side effect in the cavity, the sharp spinal nerve root etc. of stabbing easily of cone point is not because tube material has Memorability; The puncture difficulty often takes place, pipe obstruction and can't infusion anaesthetic, perhaps other transfusion, blood transfusion.
[summary of the invention]
The technical problem that the present invention will solve provides a kind of simple in structure, elasticity, good biocompatibility, and tension force is big, and infused drug or other transfusion, blood transfusion are smooth and easy, and quality safety is reliable, and the medical catheter of shape memory is arranged.
For solving the problems of the technologies described above, the present invention includes apparatus has the tapered portion of using metal helical spring, trocar sheath to comprise cylindrical portion in the plastic material of shape memory trocar sheath of processing and the tube wall that is embedded in trocar sheath and being connected cylindrical portion one end; Helical spring comprises the columnar portion spring and the interior conus portion spring of the tube wall that is embedded in tapered portion in the tube wall that is embedded in cylindrical portion.
As further improvement of the present invention, the spacing between the adjacent coils of the gap ratio columnar portion spring between the adjacent coils of conus portion spring is big.According to the needs that use, the columnar portion spring can be provided with the big big spacing turn portion of many places adjacent coils spacing along the axial direction of trocar sheath, with convenient infusion of drug or patient's bleeding situation of observing in the conduit.
As another kind of improvement the of the present invention, trocar sheath has graduation mark along its axial surface marking, and graduation mark can permanently attach in its surface; And do not drop; And excessive with the trocar sheath surface smoothing, no concave-convex sense, the clear degree of depth of grasping the conduit insertion in the time of can letting the operator use.
Adopt medical catheter of the present invention, it is simple in structure, has elasticity, good biocompatibility, and tension force is big, and infused drug or other transfusion, blood transfusion are smooth and easy, and quality safety is reliable, and characteristics such as shape memory are arranged.At the infusion anaesthetic, when perhaps other transfusion, blood transfusion, helical spring does not come off; And play a supportive role, conduit interts easily when manipulating, and does not give a discount, does not stop up, is not strayed into subarachnoid space coup injury nerve; Make infused drug or other transfusion, it is more smooth and easy to transfuse blood.In addition, the present invention can also be used for the epidural catheter that safety replaces other plastic cement to process.
[description of drawings]
Do further explain below in conjunction with the accompanying drawing specific embodiments of the invention, wherein:
Fig. 1 is a structural representation of the present invention.
[specific embodiment]
Below in conjunction with accompanying drawing embodiment of the present invention is elaborated.
Fig. 1 is the structural representation of medical catheter of the present invention; It comprises that apparatus has the plastic material of shape memory trocar sheath of processing 1 and the tube wall that is embedded in trocar sheath 1 10 interior with metal helical spring 2, and trocar sheath 1 comprises cylindrical portion 11 and the tapered portion 12 that is connected cylindrical portion 11 1 ends; Helical spring 2 comprises the columnar portion spring 21 and the interior conus portion spring 22 of the tube wall that is embedded in tapered portion 12 in the tube wall that is embedded in cylindrical portion 11.Puncture to selected position with epidural puncture; The tapered portion 12 of said trocar sheath 1 one ends imports in the epidural space along the anesthesia spinal needle tract; Trocar sheath 1 other end is connected on the device that perhaps other transfusion of anaesthetic is housed, transfuses blood, and imports anaesthetic then and blocks, perhaps other transfusion, blood transfusion; Reach anesthesia, perhaps purpose such as pain therapy; Trocar sheath 1 has with millimeter or centimetre waits the graduation mark 5 of expression long measure along its axial direction surface marking, can the clear in use insertion depth of grasping conduit of handled easily person; This graduation mark 5 can permanently be attached on trocar sheath 1 surface and not drop, and level and smooth with trocar sheath 1 surface transition, the no concave-convex sense; Helical spring 2 in the said tube wall that is embedded in trocar sheath 1 10; Comprise columnar portion spring 21 and the interior conus portion spring 22 of the tube wall that is embedded in tapered portion 12 in the tube wall that is embedded in cylindrical portion 11, the spacing H1 of the adjacent coils of conus portion spring 22 is bigger than the spacing H2 of the adjacent coils of columnar portion spring 21.When conduit of the present invention is inserted into patient body, through the irradiation of X-ray machine, can detect trocar sheath 1 or helical spring 2, to confirm its accurate position.In addition; For ease do not manipulate infusion that the person observes conduit the inside medicine or patient's hemorrhage situation; According to the needs that use, can be provided with the big big spacing turn portion 3,4 of the spacing of many places adjacent coils along the axial direction of trocar sheath 1 at columnar portion spring 21.
Combine accompanying drawing that embodiment of the present invention has been done detailed description above, but the present invention is not limited to above-mentioned embodiment, in the ken that those of ordinary skills possessed, can also under the prerequisite that does not break away from aim of the present invention, makes various variations.
Claims (8)
1. medical catheter, it is characterized in that: it comprises trocar sheath (1), is inlaid with helical spring (2) in the tube wall (10) of described trocar sheath (1).
2. by the described medical catheter of claim 1, it is characterized in that: said trocar sheath (1) has the plastic material of shape memory to process by a kind of.
3. by claim 1 or 2 described medical catheters; It is characterized in that trocar sheath (1) comprises cylindrical portion (11) and is connected the tapered portion (12) of cylindrical portion (11) one ends, helical spring (2) comprises the columnar portion spring (21) and the interior conus portion spring (22) of the tube wall that is embedded in tapered portion (12) in the tube wall that is embedded in cylindrical portion (11).
4. by the described medical catheter of claim 3, it is characterized in that: the spacing (H1) between the adjacent coils of conus portion spring (22) is bigger than the spacing between the adjacent coils of columnar portion spring (21) (H2).
5. by the described medical catheter of claim 3, it is characterized in that: columnar portion spring (21) is provided with the big big spacing spring portion (3,4) of many places adjacent coils spacing along the axial direction of trocar sheath (1).
6. by the described medical catheter of claim 1, it is characterized in that: the surface of trocar sheath (1) indicates along its axial direction has graduation mark (5).
7. by the said medical catheter of claim 6, it is characterized in that: the surface smoothing transition of said graduation mark (5) and trocar sheath (1).
8. by the described medical catheter of claim 1, it is characterized in that: said helical spring (2) is processed by a kind of metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220118975 CN202569139U (en) | 2012-03-26 | 2012-03-26 | Medical catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220118975 CN202569139U (en) | 2012-03-26 | 2012-03-26 | Medical catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202569139U true CN202569139U (en) | 2012-12-05 |
Family
ID=47238600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220118975 Expired - Fee Related CN202569139U (en) | 2012-03-26 | 2012-03-26 | Medical catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202569139U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104383632A (en) * | 2014-11-28 | 2015-03-04 | 中山市普利斯微创介入医械有限公司 | Anti-folding central venous catheter |
| CN104399172A (en) * | 2014-11-28 | 2015-03-11 | 中山市普利斯微创介入医械有限公司 | Pressure-resistant pigtail catheter |
| CN104399168A (en) * | 2014-11-28 | 2015-03-11 | 中山市普利斯微创介入医械有限公司 | Anesthetic catheter with hydrophilic coating on front section |
-
2012
- 2012-03-26 CN CN 201220118975 patent/CN202569139U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104383632A (en) * | 2014-11-28 | 2015-03-04 | 中山市普利斯微创介入医械有限公司 | Anti-folding central venous catheter |
| CN104399172A (en) * | 2014-11-28 | 2015-03-11 | 中山市普利斯微创介入医械有限公司 | Pressure-resistant pigtail catheter |
| CN104399168A (en) * | 2014-11-28 | 2015-03-11 | 中山市普利斯微创介入医械有限公司 | Anesthetic catheter with hydrophilic coating on front section |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20150326 |
|
| EXPY | Termination of patent right or utility model |