CN113855015A - Safety blood taking needle - Google Patents
Safety blood taking needle Download PDFInfo
- Publication number
- CN113855015A CN113855015A CN202111324362.2A CN202111324362A CN113855015A CN 113855015 A CN113855015 A CN 113855015A CN 202111324362 A CN202111324362 A CN 202111324362A CN 113855015 A CN113855015 A CN 113855015A
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- CN
- China
- Prior art keywords
- needle
- safe
- safety
- shell
- seat
- 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.)
- Pending
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/15058—Joining techniques used for protective means
- A61B5/150595—Joining techniques used for protective means by snap-lock (i.e. based on axial displacement)
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/150541—Breakable protectors, e.g. caps, shields or sleeves, i.e. protectors separated destructively, e.g. by breaking a connecting area
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
A safe blood taking needle, it is a structural improvement of the safe blood taking needle specifically, it has outer casing of safe needle, boot, needle tube, needle file, exerting pressure part, needle tube seat, the outer casing top of safe needle has openings, the boot cup joints the upper end of the outer casing of safe needle, the needle file cup joints with the outer casing of safe needle inside, the needle tube seat is fixedly connected on needle file, the needle tube seat is the cylindrical structure, the needle tube passes the middle of the needle tube seat and fixedly connects on needle file, the needle tube seat passes the opening on the upper end of the outer casing of safe needle, the outer right side of outer casing of safe needle has notches, the outer fixed connection exerting pressure part on the outer side of outer casing of safe needle, the exerting pressure part passes the position that the notch limits the needle file, be provided with the spring in the outer casing of safe needle, the spring is between the inner wall upper portion of outer casing of safe needle and needle file upper portion, and the cover is set up in the periphery of needle tube seat, after the needle file rebounds to spacing, the position is relatively fixed, and the needle tube is arranged in the safety needle shell, so that the needle tube is prevented from stabbing other people, and the problem of cross infection is prevented.
Description
Technical Field
The invention relates to medical equipment, in particular to an improvement of a safety blood taking needle structure.
Background
The syringe is a common medical appliance, which is composed of a casing of an injection needle, a needle tube protective sleeve, a needle tube and a needle seat, and is composed of a needle tube with a small hole at the front end and a piston core rod matched with the needle tube, and is mainly used for injecting liquid medicine or drawing liquid. The needle tube is protected by the needle tube protective housing when not in use, and along with the improvement of medical risk and the consideration of personal safety, the needle tube can not be well protected after the use, so that other people are easily stabbed in the processes of using, treating and transferring the injection needle, cross infection is generated, and great potential safety hazard exists.
Disclosure of Invention
The invention aims to provide a rebound blood taking needle after use, which solves the risk that a needle tube punctures others after the use of a common blood taking needle and simultaneously stops cross infection, aiming at overcoming the defects and shortcomings of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: it comprises a safe needle shell 1, a sheath 2, a needle tube 3, a needle seat 4, a pressure applying component 5 and a needle tube seat 6, wherein the top of the safe needle shell 1 is provided with an opening 13, the sheath 2 is sleeved at the upper end of the safe needle shell 1, the needle seat 4 is sleeved with the inside of the safe needle shell 1, the needle tube seat 6 is fixedly connected on the needle seat 4, the needle tube seat 6 is of a cylindrical structure, the needle tube 3 passes through the middle of the needle tube seat 6 and is fixedly connected on the needle seat 4, the needle tube seat 6 is provided with an opening 13, the right side of the safe needle shell is provided with a notch 12, the outside of the right side of the safe needle shell is fixedly connected with the pressure applying component 5, the pressure applying component 5 passes through the notch 12 to limit the position of the needle seat 4, a spring 7 is arranged in the safe needle shell 1, the spring 7 is arranged between the upper inner wall of the safe needle shell 1 and the upper part of the needle seat 4 and is sleeved on the periphery of the needle tube seat 6, the diameter of the opening 13 is larger than the diameter of the needle tube seat 6, and is smaller than the diameter of the spring 7, after the safety blood taking needle is used, the lower part of the pressure applying component 5 is pressed, so that the pressure applying component does not apply force to the needle seat 4 any more and does not limit the relative position of the needle seat 4, and at the moment, the tension of the spring 7 pushes the needle seat 4 to the other end of the safety needle shell 1 until the needle tube 3 is pushed into the safety needle shell 1 fully.
The upper end of the pressing component 5 is provided with a buckle 51, and the size of the buckle 51 is smaller than that of the notch 12.
The hub 4 is provided with a catch 41, and the catch 51 can snap into the catch 41 when the spring 7 is compressed.
The lower end of the pressing member 5 is provided with a small sheet 52, and the lower end of the pressing member 5 is connected with the right side of the safety needle housing 1 through the small sheet 52.
The safety needle shell 1 is internally provided with a limiting block 11 which is fixedly connected with the safety needle shell 1.
The bottom of the needle seat 4 is arranged in a T shape; after the use, needle file 4 kick-backs to the position of stopper 11, and the T shape structure of needle file 4 is more stable keeps spacing, prevents that the phenomenon of preceding slip and break away from the shell from appearing in needle file 4.
After the technical scheme is adopted, the working principle of the invention is as follows: after the safety needle is used, the lower part of the pressure applying component 5 is pressed, so that the pressure applying component does not apply force to the needle seat 4, the relative position of the needle seat 4 is not limited any more, the needle seat 4 is pushed towards the bottom end of the safety needle shell 1 by the tension of the spring 7 until the needle seat is pushed into the limiting block 11, and the phenomenon that the needle seat 4 slides forwards and is separated from the shell is prevented.
After the technical scheme is adopted, the invention has the beneficial effects that: according to the designed rebound mechanism, after the needle seat 4 is returned to the limiting block 11, the needle tube 3 is arranged in the safety needle shell, so that the needle tube is prevented from stabbing other people, and the problem of cross infection is prevented.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic illustration of the present invention in its non-use configuration;
FIG. 2 is a schematic diagram of the present invention after use;
fig. 3 is an enlarged structural view of a portion a of fig. 1.
Description of reference numerals: the safety needle comprises a safety needle shell 1, a sheath 2, a needle tube 3, a needle seat 4, a pressing component 5, a notch 12, a needle tube seat 6, a spring 7, an opening 13, a buckle 51, a clamping groove 41, a small sheet 52 and a limiting block 11.
Detailed Description
Referring to fig. 1 to 3, the technical solution adopted by the present embodiment is: the safety blood taking needle consists of a safety needle shell 1, a sheath 2, a needle tube 3, a needle seat 4, a pressure applying component 5, a needle tube seat 6 and a spring 7, wherein an opening 13 is formed in the top of the safety needle shell 1, a notch 12 is formed in the upper portion of the right side of the safety needle shell, the sheath 2 is sleeved on the upper end of the safety needle shell 1, the needle seat 4 is sleeved with the inside of the safety needle shell 1, the needle tube seat 6 is fixedly connected onto the needle seat 4, the needle tube seat 6 is of a cylindrical structure, the needle tube 3 penetrates through the middle of the needle tube seat 6 and is fixedly connected onto the needle seat 4, the needle tube seat 6 penetrates through the opening 13 in the upper end of the safety needle shell 1, the pressure applying component 5 is fixedly connected to the outside of the right side of the safety needle shell, the pressure applying component 5 penetrates through the notch 12 to limit the position of the needle seat 4, the spring 7 is arranged in the safety needle shell 1, the spring 7 is arranged between the upper portion of the inner wall of the safety needle tube shell 1 and the upper portion of the needle tube seat 6, the diameter of the opening 13 is larger than the diameter of the needle hub 6 and smaller than the diameter of the spring 7. After the safety blood taking needle is used, the lower part of the pressure applying component 5 is pressed, so that the pressure applying component does not apply force to the needle seat 4 and does not limit the relative position of the needle seat 4, and at the moment, the tension of the spring 7 pushes the needle seat 4 to the other end of the safety needle shell 1 until the needle tube 3 is pushed into the safety needle shell 1 by a full time.
The upper end of the pressing component 5 is provided with a buckle 51, the size of the buckle 51 is smaller than that of the notch 12, and the relative position of the base 4 can be limited through the notch. Cuboid buckle 51 surface is the plane, and is bigger with the area of contact of needle file 4 for the problem that the difficult emergence needle file 4 kick-backs of safe blood taking needle when not using is guaranteed to the relative position of more stable restriction needle file 4 when not using.
The hub 4 is provided with a catch 41, and the catch 51 can snap into the catch 41 when the spring 7 is compressed. When the safety needle is not used, the buckle 51 is clamped in the clamping groove 41, so that the relative position of the needle seat 4 can be more stably limited.
The lower end of the pressing member 5 is provided with a small sheet 52, and the lower end of the pressing member 5 is connected with the right side of the safety needle housing 1 through the small sheet 52. Before the safety needle is not used, the small sheets fix the relative position of the pressing part 5, and the pressing part 5 can limit the needle seat 4, so that the limit is more stable; after the safety blood taking needle is used, the lower end is pressed, the small sheet 52 is broken, the pressing part does not apply force to the needle seat 4 and does not push the needle seat 4 to the other end of the safety needle shell 1 at the relative position of the needle seat 4, and the tension of the spring 7 is utilized to push the needle seat 4 to the other end of the safety needle shell 1 until the needle tube 3 is completely pushed into the safety needle shell 1.
The safety needle shell 1 is internally provided with a limiting block 11 which is fixedly connected with the safety needle shell 1. The needle seat 4 is pushed to the other end of the safety needle shell 1 by the tension of the spring 7 until the needle seat is pushed to the limiting block 11, so that the phenomenon that the needle seat 4 slides forwards and is separated from the shell is prevented
The bottom of the needle seat 4 is arranged into a T shape. After the use, needle file 4 kick-backs to the position of stopper 11, and the T shape structure of needle file 4 is more stable keeps spacing, prevents that the phenomenon of preceding slip and break away from the shell from appearing in needle file 4.
After the technical scheme is adopted, the working principle of the invention is as follows: after the safety needle is used, the lower part of the pressure applying component 5 is pressed, so that the pressure applying component does not apply force to the needle seat 4 and does not limit the relative position of the needle seat 4, the needle seat 4 is pushed towards the other end of the safety needle shell 1 by the tension of the spring 7 until the needle seat is pushed to the limiting block 11, and the phenomenon that the needle seat 4 slides forwards and is separated from the shell is prevented.
After the technical scheme is adopted, the invention has the beneficial effects that: after the needle seat 4 reaches the limiting block 11, the position is relatively fixed, the needle tube 3 is completely inside the safety needle shell and cannot be exposed outside, and therefore the needle tube is prevented from stabbing other people and the problem of cross infection is prevented.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (5)
1. The utility model provides a safe blood taking needle, it has contained safe needle shell (1), sheath (2), needle tubing (3), needle file (4), pressing means (5), needle tubing seat (6), safe needle shell (1) top is provided with opening (13), sheath (2) cup joint the upper end at safe needle shell (1), needle file (4) cup joint with safe needle shell (1) inside, needle tubing seat (6) fixed connection is on needle file (4), needle tubing seat (6) are the cylinder structure, needle tubing (3) fixed connection passes the centre of needle tubing seat (6) on needle file (4), needle tubing seat (6) pass opening (13), its characterized in that: safety needle shell (1) right side upper portion is seted up by notch (12), and safety needle shell right side outside fixed connection biasing means (5), and biasing means (5) pass notch (12) and extend to safety needle shell (1) in, be provided with spring (7) in safety needle shell (1), spring (7) are in the inboard of opening (13), and spring (7) cover is established on needle tube seat (6), the diameter of opening (13) is greater than the external diameter of the (6) of needle tube seat, the diameter of opening (13) is less than the external diameter of spring (7).
2. A safety lancet according to claim 1, wherein: the upper end of the pressing component (5) is provided with a buckle (51), and the size of the buckle (51) is smaller than that of the notch (12).
3. A safety lancet according to claim 2, wherein: the needle seat (4) is provided with a clamping groove (41), and the buckle (51) is clamped and embedded in the clamping groove (41).
4. A safety lancet according to claim 1, wherein: the lower end of the pressing component (5) is provided with a small sheet (52), and the lower end of the pressing component (5) is connected with the right side of the safety needle shell (1) through the small sheet (52).
5. A safety lancet according to any one of claims 1 to 4, wherein: a limiting block (11) is arranged in the left wall of the lower end in the safety needle shell (1), and the limiting block (11) is fixedly connected with the safety needle shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111324362.2A CN113855015A (en) | 2021-11-10 | 2021-11-10 | Safety blood taking needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111324362.2A CN113855015A (en) | 2021-11-10 | 2021-11-10 | Safety blood taking needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113855015A true CN113855015A (en) | 2021-12-31 |
Family
ID=78987623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111324362.2A Pending CN113855015A (en) | 2021-11-10 | 2021-11-10 | Safety blood taking needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113855015A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114871977A (en) * | 2022-05-11 | 2022-08-09 | 福建银海万向医用科技有限公司 | Needle tube and automatic alignment needle seat structure thereof |
-
2021
- 2021-11-10 CN CN202111324362.2A patent/CN113855015A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114871977A (en) * | 2022-05-11 | 2022-08-09 | 福建银海万向医用科技有限公司 | Needle tube and automatic alignment needle seat structure thereof |
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