CN108938055A - A kind of central vein puncture needle - Google Patents
A kind of central vein puncture needle Download PDFInfo
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- CN108938055A CN108938055A CN201810797290.5A CN201810797290A CN108938055A CN 108938055 A CN108938055 A CN 108938055A CN 201810797290 A CN201810797290 A CN 201810797290A CN 108938055 A CN108938055 A CN 108938055A
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- needle
- needle body
- development
- central vein
- vein puncture
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3403—Needle locating or guiding means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3403—Needle locating or guiding means
- A61B2017/3413—Needle locating or guiding means guided by ultrasound
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B2017/3454—Details of tips
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
- A61B2090/062—Measuring instruments not otherwise provided for penetration depth
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a kind of central vein puncture needles, belong to technical field of medical equipment, solve the technical issues of tip position, pinpoint inclined plane direction and depth of needle that can not accurately determine puncture needle in the prior art.The central vein puncture needle includes sequentially connected needle point, development needle body, smooth needle body and needle stand；The outer peripheral surface of development needle body is equipped with multiple needle bodies protrusions；Smooth needle body edge is axially arranged with scale；The outer peripheral surface of needle stand is equipped with needle stand protrusion, the axis of needle stand protrusion, the axis of smooth needle body and the axis co-planar perpendicular to pinpoint inclined plane.Above-mentioned central vein puncture needle can be used for central venous puncture.
Description
Technical field
The present invention relates to a kind of medical equipment more particularly to a kind of central vein puncture needles.
Background technique
Ultrasound Instrument can develop the tissue and blood vessel in deep, carry out central venous puncture under ultrasound guidance, it is possible to reduce
The central vein of the patient especially bad patient of vascular access condition tries number on, has weight to patient's complication after puncture is reduced
Want meaning.
However, in the prior art, it, only can be by personal subjective judgement when the underway cardiac vein of operator punctures
Pinpoint inclined plane direction and depth of needle, to increase the difficulty and risk of puncture.
In addition, traditional central vein puncture needle is stainless steel material, and it is uniform to the reflection of ultrasonic wave, in the aobvious of Ultrasound Instrument
Show on device, the needle point development of central vein puncture needle does not protrude, and can not distinguish with needle body, frequently resulting in clinician can not
Puncture direction and the tip position for determining puncture needle, increase the difficulty and risk of puncture.
Summary of the invention
In view of above-mentioned analysis, the present invention provides a kind of central vein puncture needles of suitable ultrasound guidance, solve
The technical issues of can not accurately determining tip position, pinpoint inclined plane direction and the depth of needle of puncture needle in the prior art.
The purpose of the present invention is mainly achieved through the following technical solutions:
The present invention provides a kind of central vein puncture needle, including sequentially connected needle point, development needle body, smooth needle body and
Needle stand；The outer peripheral surface of development needle body is equipped with multiple needle bodies protrusions；Smooth needle body edge is axially arranged with scale；The outer peripheral surface of needle stand is equipped with
Needle stand protrusion, the axis of needle stand protrusion, the axis of smooth needle body and the axis co-planar perpendicular to pinpoint inclined plane.
On the basis of above scheme, the present invention has also done following improvement:
Further, develop needle body outer peripheral surface close to one end of needle point be equipped with transition protrusion.
Further, transition protrusion is cambered surface close to needle point side.
Further, the diameter of needle point is greater than the diameter of development needle body.
Further, needle point is equipped with needle point chamfering close to one end of development needle body.
Further, the diameter of smooth needle body is greater than the diameter of needle point.
Further, needle body chamfering is arranged close to one end of development needle body in smooth needle body.
Further, the shape of needle body protrusion is triangular pyramidal.
Further, on the circumferentially and axially direction of development needle body, the bottom surface triangle of two neighboring needle body protrusion
Shape has following relationship: one of base triangle rotates 180 ° around its center and obtains another base triangle.
Further, the length of needle body of developing and the ratio between smooth needle body and the total length for the needle body that develops are 1~8:100.
Compared with prior art, the present invention has the beneficial effect that:
A) central vein puncture needle provided by the invention, the outer peripheral surface for the needle body that develops are equipped with multiple needle body protrusions.In ultrasound
In the test of instrument, since the development effect on inclined-plane is higher than cambered surface, so the development effect of needle body protrusion is higher than smooth needle body, thus
The development effect of development needle body can be enhanced, the image definition of development needle body is improved, allow the operator to accurately sentence
Disconnected the puncture direction of above-mentioned central vein puncture needle and tip position out, reduce the difficulty and risk of central venous puncture.
B) central vein puncture needle provided by the invention, the outer peripheral surface of needle stand are equipped with needle stand protrusion, in this way, needle stand protrusion with
Corresponding relationship is established between pin hole direction, when underway cardiac vein punctures, operator can be according to the position of needle stand protrusion
It sets and angle, the direction of pin hole can be understood at any time, be conveniently adjusted the direction of seal wire merging, reduce control seal wire direction of travel
Difficulty.
C) central vein puncture needle provided by the invention, smooth needle body edge are axially arranged with scale.Underway cardiac vein is worn
When thorn, operator can understand depth of needle by scale in real time, in conjunction with the depth of the target blood shown in Ultrasound Instrument, from
And reduce the risk of accidentally arteriae perforantes and other deep tissues.
Other features and advantages of the present invention will illustrate in the following description, also, partial become from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by written explanation
Specifically noted structure is achieved and obtained in book, claims and attached drawing.
Detailed description of the invention
Attached drawing is only used for showing the purpose of specific embodiment, and is not to be construed as limiting the invention, in entire attached drawing
In, identical reference symbol indicates identical component.
Fig. 1 is one of structural schematic diagram of the central vein puncture needle of the embodiment of the present invention one；
Fig. 2 is another structural schematic diagram of the central vein puncture needle of the embodiment of the present invention one；
Fig. 3 is the expanded schematic diagram of development needle body in the central vein puncture needle of the embodiment of the present invention one.
Appended drawing reference:
1- needle point；2- development needle body；The smooth needle body of 3-；4- needle stand；5- needle body protrusion；6- needle stand protrusion；7- transition protrusion.
Specific embodiment
Specifically describing the preferred embodiment of the present invention with reference to the accompanying drawing, wherein attached drawing constitutes the application a part, and
Together with embodiments of the present invention for illustrating the principle of the present invention.
Embodiment one
A kind of central vein puncture needle is present embodiments provided, as shown in Figures 1 to 3 comprising sequentially connected needle point 1,
Develop needle body 2, smooth needle body 3 and needle stand 4, and the outer peripheral surface of development needle body 2 is equipped with multiple needle body protrusions 5；Smooth needle body 3 is along axial direction
Equipped with scale (by centimetre as unit of)；The outer peripheral surface of needle stand 4 is equipped with needle stand protrusion 6, the axis of needle stand protrusion 6, smooth needle body 3
Axis and axis co-planar perpendicular to 1 inclined-plane of needle point, that is to say, that needle stand protrusion 6 is set to side and the needle point 1 of needle stand 4
The corresponding position of pin hole.
It should be noted that called torulopsis refers to that, relative to development needle body 2, the roughness of smooth needle body 3 is less than development needle
Body 2.
When underway cardiac vein punctures, needle stand 4 is connect with syringe, and Ultrasound Instrument can be with real-time detection needle body protrusion 5
Position, display operation personnel can judge the specific location of needle point 1 according to the position of needle body protrusion 5, to realize accurately
Central venous puncture.
Compared with prior art, central vein puncture needle provided in this embodiment, the outer peripheral surface of development needle body 2 are equipped with multiple
Needle body protrusion 5.In the test of Ultrasound Instrument, since the development effect on inclined-plane is higher than cambered surface, so the development effect of needle body protrusion 5
The image definition of development needle body 2 is improved so as to enhance the development effect of development needle body 2 higher than smooth needle body 3, so that
Operator can accurately judge 1 position of puncture direction and needle point of above-mentioned central vein puncture needle, reduce central vein
The difficulty and risk of puncture.
Meanwhile in above-mentioned central vein puncture needle, smooth needle body 3 is punctured along scale, underway cardiac vein is axially arranged with
When, operator can understand depth of needle by scale in real time, in conjunction with the depth of the target blood shown in Ultrasound Instrument, thus
Reduce the risk of accidentally arteriae perforantes and other deep tissues.
In addition, the outer peripheral surface of needle stand 4 is equipped with needle stand protrusion 6, also, needle stand protrusion 6 is set in above-mentioned central vein puncture needle
Side, position corresponding with the pin hole of needle point 1 in needle stand 4 establish corresponding pass between needle stand protrusion 6 and pin hole direction
System, when underway cardiac vein punctures, operator can position according to needle stand protrusion 6 and angle, needle can be understood at any time
The direction in hole is conveniently adjusted the direction of seal wire merging, reduces the difficulty of control seal wire direction of travel.
In view of during central venous puncture, needing constantly to adjust the direction of pin hole, there are scales backwards to operator
The problem of member, therefore, the quantity of scale can be two, and two scales are arranged relative to the axisymmetrical of smooth needle body 3.This
Sample, even if the direction of constantly adjustment pin hole, can also guarantee that at least one in two scales is directed towards operator's.
In view of development needle body 2 is when by blood vessel, blood vessel can be caused to damage, in order to mitigate the damage to blood vessel,
Transition protrusion 7 can be set close to one end of needle point in the outer peripheral surface of development needle body 2, as shown in Figure 1.The transition protrusion 7 can fit
When expansion blood vessel puncturing hole, when develop needle body 2 pass through blood vessel when, can suitably reduce the damage caused by blood vessel.
In order to further mitigate the damage to blood vessel, transition protrusion 7 is cambered surface close to needle point side.Due to transition protrusion 7
It is cambered surface close to the side of needle point, in puncture process, the smoothness that needle point is transitioned into development protrusion is can be improved in cambered surface, this
Outside, cambered surface can it is appropriate expand blood vessel puncturing hole, when develop needle body 2 pass through blood vessel when, can suitably reduce and blood vessel is made
At damage.
Height in order to further avoid above-mentioned needle body protrusion 5 is excessive to cause excessive damage, above-mentioned needle body protrusion 5 to blood vessel
Height relative to development 2 outer peripheral surface of needle body should control between 0.05~0.15mm, for example, 0.1mm.By needle body protrusion 5
Height control relative to development 2 outer peripheral surface of needle body within the above range, can guarantee that excessive damage will not be caused to blood vessel
Under the premise of, the development effect of development needle body 2 is improved, and then improve the image definition of development needle body 2.
Similarly, in order to mitigate the damages of the raised 5 pairs of blood vessels of needle body, the diameter of needle point 1 can be greater than development needle body 2, such as
Shown in Fig. 2.In this way, can suitably expand the diameter of the puncturing hole of blood vessel when needle point 1 is by blood vessel；Then, convex when being equipped with needle body
When playing the 5 process blood vessel of development needle body 2, since the diameter of development needle body 2 is less than the diameter of needle point 1, needle body protrusion 5 can reduce
It is irregularly damaged caused by blood vessel.
In order to enable blood vessel to be swimmingly transitioned into development needle body 2 from needle point 1, needle point 1 can close to one end of development needle body 2
Needle point chamfering is arranged, for example, arc-shaped needle point chamfering.The setting of needle point chamfering is equivalent in needle point 1 close to development needle body
Changeover portion is arranged in 2 one end, and the puncturing hole of blood vessel is gradually transitted to from the needle point 1 being relatively large in diameter, and diameter is lesser to be shown
Shadow needle body 2 avoids diameter difference from causing at the right angle or acute angle shape turning that needle point 1 is generated close to one end of development needle body 2.
It is worth noting that, the diameter of needle point 1 is greater than development needle body 2, once the puncturing hole hole wall of smooth needle body 3 and blood vessel
Stickiness it is poor, it is easy to cause angiorrhea, therefore, the diameter of smooth needle body 3 can be greater than the diameter of needle point 1, also
It is to say, the diameter of the diameter of smooth needle body 3, the diameter of needle point 1 and the needle body 2 that develops successively successively decreases.In this way, when smooth needle body 3 passes through
When crossing blood vessel, relative to needle point 1, smooth needle body 3 further can suitably expand the diameter of the puncturing hole of blood vessel, so that blood vessel
Puncturing hole hole wall can be fitted closely with smooth needle body 3, to avoid angiorrhea.
It similarly, can also be in smooth needle in order to enable blood vessel swimmingly to transit to smooth needle body 3 from development needle body 2
Needle body chamfering is arranged close to one end of development needle body 2 in body 3, smooth so as to transit to blood vessel swimmingly from development needle body 2
Needle body 3.
In order to further enhance development effect, the shape of above-mentioned needle body protrusion 5 can be triangular pyramidal or quadrangle taper,
Reflecting surface is three or four planes, and under normal conditions, the shape of smooth needle body 3 is cylinder, and outer peripheral surface is cambered surface, by
Arc is better than to the reflection of plane in ultrasound, so that the image that the image definition of development needle body 2 is apparently higher than smooth needle body 3 is clear
Clear degree, also, from least three directions, Ultrasound Instrument can detecte the preferable clear image of development effect.
In order to guarantee the development effect of Ultrasound Instrument from multiple directions, the shape of needle body protrusion 5 can be triangular pyramidal,
Develop on the circumferentially and axially direction of needle body 2, the base triangle of two neighboring needle body protrusion 5 has following relationship:
One of base triangle rotates 180 ° around its center and obtains another base triangle, as shown in Figure 3., two neighboring needle
5 tool of body protrusion there are six towards different planes, thereby may be ensured that Ultrasound Instrument detect from multiple directions all have it is good
Development effect.
In order to guarantee the image conformity of development needle body 2, multiple needle body protrusions 5 should be evenly distributed on development needle body 2
Outer peripheral surface.During central venous puncture, operator needs continuous adjustment to puncture direction, and multiple needle bodies protrusions 5 are uniformly divided
Cloth, can guarantee the image conformity of development needle body 2, and then can guarantee the development in the test of Ultrasound Instrument towards Ultrasound Instrument
The image definition of needle body 2.
In view of development 2 process of needle body will affect the smooth of central venous puncture, the length of development needle body 2 is avoided to increase blood
The ratio between total length of the risk of pipe excessive damage, the length of above-mentioned development needle body 2 and smooth needle body 3 and the needle body 2 that develops can be 1
~8:100 (such as 5:100).This is because the setting of needle body protrusion 5 will increase the roughness of development needle body 2, develop needle body 2
Length it is too long, can the entire puncture needle of relative increase roughness, influence the smooth of central venous puncture；But development needle body 2
Length it is too short, it is unobvious to the increase of development effect, will lead to operator judge puncture needle puncture direction and 1, needle point
The difficulty set increases.
Illustratively, when the total length of smooth needle body 3 and development needle body 2 is 10cm, the length of development needle body 2 can be controlled
System is in 0.1~0.8cm.
In order to further increase the smoothness of puncture process, the inclined-plane of needle point and the angle of the axis of smooth needle body 3 are 10
~15 °, can be 10~12 ° illustratively.Since the inclined-plane of needle point and the angle of the axis of smooth needle body 3 are smaller, in this way
Be conducive to puncture vessel, improve the smoothness of puncture process.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of central vein puncture needle, which is characterized in that including sequentially connected needle point, development needle body, smooth needle body and needle
Seat；
The outer peripheral surface of the development needle body is equipped with multiple needle body protrusions；
The smooth needle body edge is axially arranged with scale；
The outer peripheral surface of the needle stand be equipped with needle stand protrusion, the axis of the needle stand protrusion, the axis of smooth needle body and perpendicular to
The axis co-planar of pinpoint inclined plane.
2. central vein puncture needle according to claim 1, which is characterized in that the outer peripheral surface of the development needle body is close to needle
One end of point is equipped with transition protrusion.
3. central vein puncture needle according to claim 2, which is characterized in that the transition protrusion is close to the side of needle point
For cambered surface.
4. central vein puncture needle according to claim 1, which is characterized in that the diameter of the needle point is greater than development needle body
Diameter.
5. central vein puncture needle according to claim 4, which is characterized in that the needle point is close to one end of development needle body
Equipped with needle point chamfering.
6. central vein puncture needle according to claim 4, which is characterized in that the diameter of the smooth needle body is greater than needle point
Diameter.
7. central vein puncture needle according to claim 6, which is characterized in that the smooth needle body is close to development needle body
Needle body chamfering is arranged in one end.
8. central vein puncture needle according to claim 1, which is characterized in that the shape of the needle body protrusion is pyrometric cone
Shape.
9. central vein puncture needle according to claim 8, which is characterized in that developing needle body circumferentially and axially
On direction, the base triangle of two neighboring needle body protrusion has following relationship: one of base triangle is around its center
180 ° of rotation obtains another base triangle.
10. according to claim 1 to central vein puncture needle described in 9, which is characterized in that the length and light of the development needle body
The ratio between sliding needle body and the total length for the needle body that develops are 1~8:100.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810797290.5A CN108938055B (en) | 2018-07-19 | 2018-07-19 | Central venous puncture needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810797290.5A CN108938055B (en) | 2018-07-19 | 2018-07-19 | Central venous puncture needle |
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| Publication Number | Publication Date |
|---|---|
| CN108938055A true CN108938055A (en) | 2018-12-07 |
| CN108938055B CN108938055B (en) | 2021-05-28 |
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| CN201810797290.5A Active CN108938055B (en) | 2018-07-19 | 2018-07-19 | Central venous puncture needle |
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| Publication number | Publication date |
|---|---|
| CN108938055B (en) | 2021-05-28 |
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