CN204582254U - Arterypuncture trocar - Google Patents
Arterypuncture trocar Download PDFInfo
- Publication number
- CN204582254U CN204582254U CN201520152124.1U CN201520152124U CN204582254U CN 204582254 U CN204582254 U CN 204582254U CN 201520152124 U CN201520152124 U CN 201520152124U CN 204582254 U CN204582254 U CN 204582254U
- Authority
- CN
- China
- Prior art keywords
- puncture needle
- trocar
- seal wire
- epitheca
- arterypuncture
- 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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- Media Introduction/Drainage Providing Device (AREA)
- Surgical Instruments (AREA)
Abstract
This utility model relates to arterypuncture trocar, comprises puncture needle and epitheca, and described outer sheath also can move axially along puncture needle on puncture needle; Described puncture needle is hollow-core construction, and puncture needle afterbody is provided with needle stand, and described epitheca afterbody is provided with sheath seat, and sheath seat is connected on needle stand; It is characterized in that: described paracentesis trocar also includes seal wire, the outside dimension of described seal wire is less than the internal diameter size of puncture needle, and seal wire freely can be walked in puncture needle.This utility model structure is ingenious, it is high, simple to operate fast, little to injury of human to put pipe success rate.
Description
Technical field
This utility model relates to the device used when artery and vein puncture puts pipe, specifically arterypuncture trocar, belongs to medical apparatus and instruments technical field.
Background technology
In clinical treatment, artery and vein puncture technology is widely used in hemodialysis.Existing arterypuncture trocar is mainly made up of puncture needle and epitheca, during use, first uses the success of lancet puncture blood vessel, then along puncture needle, epitheca is released blood vessel, exit puncture needle, epitheca indwelling, i.e. complete operation.But there is the high problem of puncture failure rate when reality uses in existing arterypuncture trocar, often occur seeing blood back but the situation of putting tube failure, disposable puncture success rate is very low, require high to puncture technique, and repeatedly puncture and also can cause injury of human and Principle of Pain, lead to complications, easily cause conflict between doctors and patients.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of arterypuncture trocar, and its structure is ingenious, it is high, simple to operate fast, little to injury of human to put pipe success rate.
Technical scheme according to this utility model provides: arterypuncture trocar, comprises puncture needle and epitheca, and described outer sheath also can move axially along puncture needle on puncture needle; Described puncture needle is hollow-core construction, and puncture needle afterbody is provided with needle stand, and described epitheca afterbody is provided with sheath seat, and sheath seat is connected on needle stand; It is characterized in that: described paracentesis trocar also includes seal wire, the outside dimension of described seal wire is less than the internal diameter size of puncture needle, and seal wire freely can be walked in puncture needle.
As further improvement of the utility model, described seal wire comprises guidewire body, and the anterior drawing-down process of described guidewire body, forms one section of filament section, and described filament section is bending coils, and forms the blunt and flexible ends of softness.
As further improvement of the utility model, the outside dimension of described flexible ends is identical with the outside dimension of guidewire body.
As further improvement of the utility model, described paracentesis trocar also comprises guiding nook closing member, described guid needle core internal diameter size and seal wire outside dimension match, and guiding nook closing member is used for inserting in epitheca from epitheca rear end, accurately advance along seal wire to make epitheca and guiding nook closing member.
As further improvement of the utility model, described guiding nook closing member adopts flexible medical grade plastic materials to make.
As further improvement of the utility model, described guiding nook closing member adopts medical PVC material to make.
compared with prior art, advantage is this utility model:guide wire of the present utility model is ingenious, owing to being provided with the flexible ends of blunt and softness, seal wire is when inserting blood vessel, and seal wire front end is not easy to penetrate blood vessel rear wall, and it is high, simple to operate fast, little to injury of human to put pipe success rate.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model embodiment.
Fig. 2 is the structural representation of seal wire in Fig. 1.
Fig. 3 is the A portion enlarged drawing in Fig. 2.
Detailed description of the invention
Below in conjunction with concrete drawings and Examples, the invention will be further described.
As shown in Figure 1 and Figure 2, the arterypuncture trocar in embodiment forms primarily of seal wire 1, puncture needle 2, epitheca 3 and guiding nook closing member 4, and described epitheca 3 is enclosed within puncture needle 2 and also can moves axially along puncture needle 2; Described puncture needle 2 is hollow-core construction, and puncture needle 2 afterbody is provided with needle stand, and described epitheca 3 afterbody is provided with sheath seat, and sheath seat is connected on needle stand; The outside dimension of described seal wire 1 is less than the internal diameter size of puncture needle 2, and seal wire 1 freely can be walked in puncture needle 2.
In this utility model, described puncture needle 2, epitheca 3 and seal wire 1 all can adopt conventional products of the prior art, but because existing conventional guidewire 1 is very thin, and in order to ensure that seal wire 1 can be walked smoothly, seal wire 1 needs to have certain rigidity, therefore seal wire 1 is when inserting blood vessel, and seal wire 1 front end very easily penetrates blood vessel rear wall, causes putting tube failure.For this reason, this utility model embodiment still provides a kind of specially designed seal wire 1, and its structure as shown in Figure 2 and Figure 3, this seal wire 1 comprises guidewire body 1a, and the anterior drawing-down process of described guidewire body 1a, forms one section of filament section, the bending coiling of described filament section, forms the blunt and flexible ends 1b of softness.Preferably, the outside dimension of described flexible ends 1b is identical with the outside dimension of guidewire body 1a.What be convenient to seal wire 1 like this inserts operation.
As shown in Figure 1, in this utility model embodiment, described guiding nook closing member 4 internal diameter size and seal wire 1 outside dimension match, and guiding nook closing member 4, for inserting in epitheca 3 from epitheca 3 rear end, accurately advances along seal wire 1 to make epitheca 3 and guiding nook closing member 4.
In this utility model, described guiding nook closing member 4 adopts flexible medical grade plastic materials to make, and makes as adopted medical PVC material.
During use, first use the success of puncture needle 2 puncture vessel, then insert seal wire 1, exit puncture needle 2, then insert guiding nook closing member 4 and epitheca 3 along seal wire 1, finally exit seal wire 1 and guiding nook closing member 4, epitheca 3 indwelling, i.e. complete operation.Because seal wire 1 front end is provided with the blunt and flexible ends 1b of softness, seal wire 1 is when inserting blood vessel, and seal wire 1 front end is not easy to penetrate blood vessel rear wall, and it is high, simple to operate fast, little to injury of human to put pipe success rate.
Claims (6)
1. arterypuncture trocar, comprises puncture needle (2) and epitheca (3), and described epitheca (3) is enclosed within puncture needle (2) and above also can moves axially along puncture needle (2); Described puncture needle (2) is hollow-core construction, and puncture needle (2) afterbody is provided with needle stand, and described epitheca (3) afterbody is provided with sheath seat, and sheath seat is connected on needle stand; It is characterized in that: described paracentesis trocar also includes seal wire (1), the outside dimension of described seal wire (1) is less than the internal diameter size of puncture needle (2), and seal wire (1) freely can be walked in puncture needle (2).
2. arterypuncture trocar as claimed in claim 1, it is characterized in that: described seal wire (1) comprises guidewire body (1a) that the anterior drawing-down process of described guidewire body (1a) forms one section of filament section, the bending coiling of described filament section, forms the blunt and flexible ends of softness (1b).
3. arterypuncture trocar as claimed in claim 2, is characterized in that: the outside dimension of described flexible ends (1b) is identical with the outside dimension of guidewire body (1a).
4. arterypuncture trocar as claimed in claim 1, it is characterized in that: described paracentesis trocar also comprises guiding nook closing member (4), described guiding nook closing member (4) internal diameter size and seal wire (1) outside dimension match, guiding nook closing member (4), for inserting in epitheca (3) from epitheca (3) rear end, is accurately advanced along seal wire (1) to make epitheca (3) and guiding nook closing member (4).
5. arterypuncture trocar as claimed in claim 4, is characterized in that: described guiding nook closing member (4) adopts flexible medical grade plastic materials to make.
6. arterypuncture trocar as claimed in claim 4, is characterized in that: described guiding nook closing member (4) adopts medical PVC material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520152124.1U CN204582254U (en) | 2015-03-17 | 2015-03-17 | Arterypuncture trocar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520152124.1U CN204582254U (en) | 2015-03-17 | 2015-03-17 | Arterypuncture trocar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204582254U true CN204582254U (en) | 2015-08-26 |
Family
ID=53918463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520152124.1U Expired - Fee Related CN204582254U (en) | 2015-03-17 | 2015-03-17 | Arterypuncture trocar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204582254U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107334519A (en) * | 2017-07-03 | 2017-11-10 | 青岛市妇女儿童医院 | A kind of neonatal pulmonary locking adjustable bending lancing system and piercing method |
-
2015
- 2015-03-17 CN CN201520152124.1U patent/CN204582254U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107334519A (en) * | 2017-07-03 | 2017-11-10 | 青岛市妇女儿童医院 | A kind of neonatal pulmonary locking adjustable bending lancing system and piercing method |
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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: 20150826 Termination date: 20160317 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |