CN112890813A - Novel artery blood taking needle - Google Patents
Novel artery blood taking needle Download PDFInfo
- Publication number
- CN112890813A CN112890813A CN202110201445.6A CN202110201445A CN112890813A CN 112890813 A CN112890813 A CN 112890813A CN 202110201445 A CN202110201445 A CN 202110201445A CN 112890813 A CN112890813 A CN 112890813A
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- outer sleeve
- valve
- seat
- connecting part
- periphery
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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
- A61B5/150015—Source of blood
- A61B5/15003—Source of blood for venous or arterial blood
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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
- A61B5/150541—Breakable protectors, e.g. caps, shields or sleeves, i.e. protectors separated destructively, e.g. by breaking a connecting area
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- 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
- A61B5/150572—Pierceable protectors, e.g. shields, caps, sleeves or films, e.g. for hygienic purposes
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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)
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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
- A61B5/150633—Protective sleeves which are axially extensible, e.g. sleeves connected to, or integrated in, the piercing or driving device; pivotable protective sleeves
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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
- A61B5/150694—Procedure for removing protection means at the time of piercing
- A61B5/150709—Procedure for removing protection means at the time of piercing semi-automatically removed, i.e. before puncturing the protection is removed by a mechanism initiated by a deliberate action by the user, such as pressing a button
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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
- A61B5/153—Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
Abstract
The invention discloses a novel arterial blood taking needle. The method comprises the following steps: an injector body; the tail end of the liquid inlet one-way valve is detachably connected with the connecting seat; the tail end of the needle head is provided with a mounting seat, and the mounting seat is detachably connected with the front end of the liquid inlet one-way valve; the first outer sleeve is arranged on the periphery of the needle head, the inner diameter of the first outer sleeve is matched with the periphery of the first connecting part, and the first outer sleeve is fixedly connected with the mounting seat and used for covering the rear part of the needle head; and the second outer sleeve is at least partially arranged in the first outer sleeve and can move along the axial direction of the first outer sleeve, and the outer periphery of the second outer sleeve is matched with the inner periphery of the first outer sleeve and is used for covering the front part of the needle. The invention has the beneficial effects that: be equipped with first outer sleeve pipe and second outer sleeve pipe in the syringe needle periphery, can shield the syringe needle and avoid being stabbed medical personnel after the blood sampling.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a novel arterial blood taking needle.
Background
Arterial blood gas analysis is an important laboratory test for evaluating the oxygenation, ventilation and acid-base status of patients. The pulmonary function and the body fluid acid-base equilibrium state of a patient can be known through arterial blood gas analysis, and the pulmonary function and the body fluid acid-base equilibrium state can be used as one of important bases for mechanical ventilation parameter adjustment, curative effect analysis and prognosis judgment. With the development of medical technology, arterial blood gas analysis is widely applied clinically.
Accurate arterial blood gas analysis results are of great importance to the diagnosis of respiratory failure and acid-base imbalance, and qualified arterial blood samples are the premise for ensuring the accuracy of the blood gas analysis results. Blood gas analysis generally adopts a whole blood sample, and requires that the sample is correctly collected, isolated from air and timely sent for inspection, and the sample has no clot, hemolysis and the like.
The existing arterial blood taking needle has the following defects that the needle head is exposed, and medical staff are easily stabbed by the needle head after blood taking; secondly, the risk of blood sample pollution exists after the needle head is taken down; thirdly, the needle head can not be removed automatically.
Disclosure of Invention
The invention aims to provide a novel arterial blood taking needle, which is provided with a first outer sleeve and a second outer sleeve on the periphery of a needle head and can avoid puncture injury after blood taking.
It is still another object of the present invention to provide a novel arterial blood taking needle provided with a check valve capable of preventing contamination of a blood sample.
In order to achieve the purpose, the invention adopts the following technical scheme that:
the syringe comprises a syringe body, a syringe body and a syringe handle, wherein a tube cavity is arranged in the syringe body, a connecting seat is arranged at the front end of the syringe body, and a through hole communicated with the tube cavity is arranged in the connecting seat;
the tail end of the liquid inlet one-way valve is detachably connected with the connecting seat; and
the tail end of the needle head is provided with a mounting seat, and the mounting seat is detachably connected with the front end of the liquid inlet one-way valve;
the first outer sleeve is arranged on the periphery of the needle head, the inner diameter of the first outer sleeve is matched with the periphery of the first connecting part, and the first outer sleeve is fixedly connected with the mounting seat and used for covering the rear part of the needle head;
the second outer sleeve is at least partially arranged in the first outer sleeve and can move along the axial direction of the first outer sleeve, and the outer periphery of the second outer sleeve is matched with the inner periphery of the first outer sleeve and used for covering the front part of the needle head;
the rear part of the second outer sleeve is provided with a first spring pin, the front part and the rear part of the first outer sleeve are respectively provided with a first limiting hole and a second limiting hole, and the first spring pin can be selectively matched with the first limiting hole and the second limiting hole.
Preferably, the liquid inlet check valve comprises:
the tail end of the valve body is provided with a first connecting part, the inner periphery of the first connecting part is provided with an internal thread, the internal thread is matched with an external thread arranged on the connecting seat, the first connecting part is connected with the connecting seat through a thread, the front end of the valve body is provided with a second connecting part, the outer periphery of the second connecting part is matched with the inner periphery of the mounting seat, and the middle part of the valve body is provided with a valve cavity;
the valve seat is arranged in the valve cavity, a central hole is formed in the center of the valve seat, and a plurality of liquid inlet holes are uniformly distributed in the periphery of the central hole;
a piston rod of the piston penetrates through the central hole, an umbrella-shaped end part is arranged at the tail end of the piston rod, and a limiting block is arranged at the front end of the piston;
wherein, work as the stopper with during the disk seat looks butt, umbelliform tip and disk seat separation, the feed liquor check valve is the open mode, works as during umbelliform tip and disk seat looks butt, umbelliform tip shields the feed liquor hole, the feed liquor check valve is closed state.
Preferably, the liquid inlet check valve comprises:
the tail end of the valve body is provided with a first connecting part, the inner periphery of the first connecting part is provided with an internal thread, the internal thread is matched with an external thread arranged on the connecting seat, the first connecting part is connected with the connecting seat through a thread, the front end of the valve body is provided with a second connecting part, the outer periphery of the second connecting part is matched with the inner periphery of the mounting seat, and the middle part of the valve body is provided with a valve cavity;
the valve comprises a valve cavity, a pair of valve clacks, a valve core and a valve core, wherein the valve clacks are arranged in the valve cavity and are in a semi-conical shape, the base parts of the valve clacks are connected with the valve cavity, and the free ends of the valve clacks are mutually attached;
wherein the valve flap is made of an elastic rubber material.
Preferably, the outer periphery of the second connecting portion and the inner periphery of the mounting seat are provided with matching tapers.
Preferably, the method further comprises the following steps:
a second spring pin provided on the first connection part;
and the third limiting hole is arranged at the tail end of the first outer sleeve, is matched with the second spring pin and is used for fixing the first outer sleeve on the liquid inlet one-way valve.
Preferably, the method further comprises the following steps:
the annular groove is arranged in the middle of the valve body;
the spring is sleeved on the annular groove, and the tail end of the spring is fixedly connected with the first connecting part;
when the second spring pin is inserted into the third limiting hole, the front end of the spring is abutted against the rear end face of the mounting seat, and the spring is in a compressed state; when the second spring pin is pressed down, the second spring pin retracts to the outside of the third limiting hole, and the needle head, the first outer sleeve and the second outer sleeve are separated from the liquid inlet one-way valve under the restoring force action of the spring.
Preferably, the method further comprises the following steps:
and the upright post is arranged at the front end of the second outer sleeve and is used for driving the second outer sleeve to move.
The invention has the beneficial effects that: the periphery of the needle head is provided with a first outer sleeve and a second outer sleeve, the second outer sleeve can axially move along the first outer sleeve, and the needle head can be shielded to avoid puncturing medical care personnel after blood sampling; the liquid inlet one-way valve is arranged, so that blood sample pollution can be avoided; the liquid inlet one-way valve is provided with a spring, and the needle head, the first outer sleeve and the second outer sleeve can be automatically separated from the liquid inlet one-way valve under the action of restoring force of the spring.
Drawings
FIG. 1 is a schematic view of a novel arterial blood taking needle of the invention (fully needle-shielded state).
FIG. 2 is a schematic view of the novel arterial blood taking needle of the invention (in a state of semi-shielding needle head).
FIG. 3 is a schematic view of a novel arterial blood collection needle of the invention (needle-removed state).
Fig. 4 is a schematic diagram I of the liquid inlet check valve in the invention.
Fig. 5 is schematic diagram II of the liquid inlet check valve of the invention.
Fig. 6 is a schematic view of a first outer sleeve and a second outer sleeve of the invention.
Detailed Description
The invention is described in further detail below with reference to the drawings so that those skilled in the art can practice the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1 to 6, in one implementation form of the present invention, to achieve the above object, the present invention adopts the following technical solutions, including:
the syringe comprises a syringe body 110, a connecting seat 112 and a through hole 113, wherein a tube cavity 111 is arranged in the syringe body, the front end of the syringe body is provided with the connecting seat 112, and the connecting seat 112 is internally provided with the through hole 113 communicated with the tube cavity 111; preferably, the syringe body 110 is made of polyethylene material. More preferably, an external thread is provided on the outer circumference of the connection holder 112.
The end of the liquid inlet one-way valve 120 is detachably connected with the connecting seat 112; and as a preference, the inlet check valve 120 includes: the tail end of the valve body is provided with a first connecting part 121, the inner periphery of the first connecting part 121 is provided with an internal thread, the internal thread is matched with an external thread arranged on the connecting seat 112, the first connecting part 121 is connected with the connecting seat 112 through a thread, the front end of the valve body is provided with a second connecting part 122, the outer periphery of the second connecting part 122 is matched with the inner periphery of the mounting seat 121, and the middle part of the valve body is provided with a valve cavity 123; the valve seat 124 is arranged in the valve cavity 123, a central hole is arranged in the center of the valve seat 124, and a plurality of liquid inlet holes 124a are uniformly distributed on the periphery of the central hole; a piston rod of the piston 125 penetrates through the central hole, an umbrella-shaped end part is arranged at the tail end of the piston rod, and a limiting block is arranged at the front end of the piston; wherein, when the stopper with during valve seat 124 looks butt, umbelliform tip and valve seat 124 separation, feed liquor check valve 120 is the open mode, works as when umbelliform tip and valve seat looks butt, umbelliform tip shields the feed liquor hole, the feed liquor check valve is 120 closed modes. As a further preference, the piston 125 is made of a rubber material.
The tail end of the needle 130 is provided with a mounting seat 131, and the mounting seat 131 is detachably connected with the front end of the liquid inlet one-way valve; preferably, the inner circumference of the mounting seat 131 matches the outer circumference of the second connecting portion 122. More preferably, the inner circumference of the mounting seat 131 and the outer circumference of the second connecting portion 122 are tapered to match each other.
The first outer sleeve 140 is disposed on the outer periphery of the needle 130, the inner diameter of the first outer sleeve 140 matches with the outer periphery of the first connecting portion 121, and the first outer sleeve 140 is fixedly connected to the mounting seat 131 for covering the rear portion of the needle 130. The second outer sleeve 150 is at least partially disposed inside the first outer sleeve 140 and is movable along the axial direction of the first outer sleeve 140, and the outer circumference of the second outer sleeve 150 matches the inner circumference of the first outer sleeve 140 for covering the front portion of the needle 130. Preferably, the first outer sleeve 140 and the second outer sleeve 150 are made of a rubber material. Preferably, a first spring pin 151 is disposed at a rear portion of the second outer sleeve 150, a first stopper hole 141 and a second stopper hole 142 are disposed at a front portion and a rear portion of the first outer sleeve 140, respectively, and the first spring pin 151 is selectively engaged with the first stopper hole 141 and the second stopper hole 142.
In the using process, the first spring pin 151 is firstly pressed down to enable the first spring pin 151 to retract to the outside of the first limit hole 141, then the second outer sleeve 150 is pulled to enable the first spring pin 151 to retract to the inside of the first outer sleeve 140 until the first spring pin 151 reaches the position of the second limit hole 142 and extends into the second limit hole 142, at the moment, the middle front part of the needle head is exposed, blood can be collected, after the blood collection is finished, the first spring pin 151 is pressed down again to enable the first spring pin 151 to retract to the outside of the second limit hole 142, the second outer sleeve 150 is pulled to enable the second outer sleeve 150 to shield the front part of the needle head until the first spring pin 151 reaches the position of the first limit hole 141 and extends into the first limit hole 141. Because the liquid inlet check valve is arranged between the needle 130 and the injector body 110, blood is prevented from leaking or external air enters, and when the qi and blood analysis is needed, only the first connecting part 121 needs to be rotated, so that the first connecting part 121 is separated from the connecting seat 112.
In another embodiment, the inlet check valve 120 as shown in fig. 4 comprises: the tail end of the valve body is provided with a first connecting part 121, the inner periphery of the first connecting part 121 is provided with an internal thread, the internal thread is matched with an external thread arranged on the connecting seat 112, the first connecting part 121 is connected with the connecting seat 112 through a thread, the front end of the valve body is provided with a second connecting part 122, the outer periphery of the second connecting part 122 is matched with the inner periphery of the mounting seat 121, and the middle part of the valve body is provided with a valve cavity 123; the valve seat 124 is arranged in the valve cavity 123, a central hole is arranged in the center of the valve seat 124, and a plurality of liquid inlet holes 124a are uniformly distributed on the periphery of the central hole; a piston rod of the piston 125 penetrates through the central hole, an umbrella-shaped end part is arranged at the tail end of the piston rod, and a limiting block is arranged at the front end of the piston; wherein, when the stopper with during valve seat 124 looks butt, umbelliform tip and valve seat 124 separation, feed liquor check valve 120 is the open mode, works as when umbelliform tip and valve seat looks butt, umbelliform tip shields the feed liquor hole, the feed liquor check valve is 120 closed modes. Preferably, the piston 125 is made of a rubber material.
In another embodiment, the inlet check valve 120 as shown in fig. 5 comprises: the tail end of the valve body is provided with a first connecting part 121, the inner periphery of the first connecting part 121 is provided with an internal thread, the internal thread is matched with an external thread arranged on the connecting seat 112, the first connecting part 121 is connected with the connecting seat 112 through a thread, the front end of the valve body is provided with a second connecting part 122, the outer periphery of the second connecting part 122 is matched with the inner periphery of the mounting seat 121, and the middle part of the valve body is provided with a valve cavity 123; a pair of valve flaps 126 arranged in the valve cavity 123, wherein the valve flaps 126 are in a semi-conical shape, the base parts of the valve flaps 126 are connected with the valve cavity 123, and the free ends of the valve flaps 126 are attached to each other; wherein the valve flap 126 is made of an elastic rubber material.
In another embodiment, the outer circumference of the second connecting portion 122 and the inner circumference of the mounting seat 131 are provided with matching tapers. Preferably, the taper is 8 °.
In another embodiment, the method further comprises: a second spring pin 127 is provided on the first connection portion 121; a third limiting hole 143 is disposed at the end of the first outer sleeve 140, and is matched with the second spring pin 127 for fixing the first outer sleeve 140 on the liquid inlet check valve 120.
In another embodiment, the method further comprises: an annular groove 128 provided in the middle of the valve body; the spring 129 is sleeved on the annular groove 128, and the tail end of the spring 129 is fixedly connected with the first connecting part 121; when the second spring pin 127 is inserted into the third limiting hole 143, the front end of the spring 129 abuts against the rear end face of the mounting seat 131, and the spring 129 is in a compressed state; when the second spring pin 127 is pressed down, the second spring pin 127 retracts out of the third limiting hole 143, and the needle 130, the first outer sleeve 140 and the second outer sleeve 150 are separated from the liquid inlet check valve 120 under the restoring force of the spring 129.
In another embodiment, the method further comprises: the post 152 is disposed at the front end of the second outer sleeve 150 for moving the second outer sleeve 150. Preferably, the post 152 is integrally formed with the second outer sleeve 150.
In summary, according to the novel arterial blood collection needle 1 of the present invention, the first outer sleeve 140 and the second outer sleeve 150 are disposed at the periphery of the needle 130, and the second outer sleeve 150 can move axially along the first outer sleeve 140, so as to shield the needle and prevent the needle from puncturing medical care personnel after blood collection; the liquid inlet one-way valve 120 is arranged to avoid blood sample pollution; the liquid inlet check valve 120 is provided with a spring 129, and the needle 130, the first outer sleeve 140 and the second outer sleeve 150 can be automatically separated from the liquid inlet check valve 120 under the restoring force of the spring 129.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (7)
1. A novel arterial blood taking needle is characterized by comprising:
the syringe comprises a syringe body, a syringe body and a syringe handle, wherein a tube cavity is arranged in the syringe body, a connecting seat is arranged at the front end of the syringe body, and a through hole communicated with the tube cavity is arranged in the connecting seat;
the tail end of the liquid inlet one-way valve is detachably connected with the connecting seat; and
the tail end of the needle head is provided with a mounting seat, and the mounting seat is detachably connected with the front end of the liquid inlet one-way valve;
the first outer sleeve is arranged on the periphery of the needle head, the inner diameter of the first outer sleeve is matched with the periphery of the first connecting part, and the first outer sleeve is fixedly connected with the mounting seat and used for covering the rear part of the needle head;
the second outer sleeve is at least partially arranged in the first outer sleeve and can move along the axial direction of the first outer sleeve, and the outer periphery of the second outer sleeve is matched with the inner periphery of the first outer sleeve and used for covering the front part of the needle head;
the rear part of the second outer sleeve is provided with a first spring pin, the front part and the rear part of the first outer sleeve are respectively provided with a first limiting hole and a second limiting hole, and the first spring pin can be selectively matched with the first limiting hole and the second limiting hole.
2. A novel arterial blood taking needle as claimed in claim 1, wherein said liquid inlet one-way valve comprises:
the tail end of the valve body is provided with a first connecting part, the inner periphery of the first connecting part is provided with an internal thread, the internal thread is matched with an external thread arranged on the connecting seat, the first connecting part is connected with the connecting seat through a thread, the front end of the valve body is provided with a second connecting part, the outer periphery of the second connecting part is matched with the inner periphery of the mounting seat, and the middle part of the valve body is provided with a valve cavity;
the valve seat is arranged in the valve cavity, a central hole is formed in the center of the valve seat, and a plurality of liquid inlet holes are uniformly distributed in the periphery of the central hole;
a piston rod of the piston penetrates through the central hole, an umbrella-shaped end part is arranged at the tail end of the piston rod, and a limiting block is arranged at the front end of the piston;
wherein, work as the stopper with during the disk seat looks butt, umbelliform tip and disk seat separation, the feed liquor check valve is the open mode, works as during umbelliform tip and disk seat looks butt, umbelliform tip shields the feed liquor hole, the feed liquor check valve is closed state.
3. A novel arterial blood taking needle as claimed in claim 1, wherein said liquid inlet one-way valve comprises:
the tail end of the valve body is provided with a first connecting part, the inner periphery of the first connecting part is provided with an internal thread, the internal thread is matched with an external thread arranged on the connecting seat, the first connecting part is connected with the connecting seat through a thread, the front end of the valve body is provided with a second connecting part, the outer periphery of the second connecting part is matched with the inner periphery of the mounting seat, and the middle part of the valve body is provided with a valve cavity;
the valve comprises a valve cavity, a pair of valve clacks, a valve core and a valve core, wherein the valve clacks are arranged in the valve cavity and are in a semi-conical shape, the base parts of the valve clacks are connected with the valve cavity, and the free ends of the valve clacks are mutually attached;
wherein the valve flap is made of an elastic rubber material.
4. A novel arterial blood collection needle according to claim 2 or 3, characterized in that: and the outer periphery of the second connecting part and the inner periphery of the mounting seat are provided with matched tapers.
5. The novel arterial blood collection needle according to claim 2, further comprising:
a second spring pin provided on the first connection part;
and the third limiting hole is arranged at the tail end of the first outer sleeve, is matched with the second spring pin and is used for fixing the first outer sleeve on the liquid inlet one-way valve.
6. The novel arterial blood collection needle according to claim 5, further comprising:
the annular groove is arranged in the middle of the valve body;
the spring is sleeved on the annular groove, and the tail end of the spring is fixedly connected with the first connecting part;
when the second spring pin is inserted into the third limiting hole, the front end of the spring is abutted against the rear end face of the mounting seat, and the spring is in a compressed state; when the second spring pin is pressed down, the second spring pin retracts to the outside of the third limiting hole, and the needle head, the first outer sleeve and the second outer sleeve are separated from the liquid inlet one-way valve under the restoring force action of the spring.
7. The novel arterial blood collection needle according to claim 1, further comprising:
and the upright post is arranged at the front end of the second outer sleeve and is used for driving the second outer sleeve to move.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110201445.6A CN112890813B (en) | 2021-02-23 | 2021-02-23 | Artery blood taking needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110201445.6A CN112890813B (en) | 2021-02-23 | 2021-02-23 | Artery blood taking needle |
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| CN112890813A true CN112890813A (en) | 2021-06-04 |
| CN112890813B CN112890813B (en) | 2022-12-06 |
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| CN202110201445.6A Active CN112890813B (en) | 2021-02-23 | 2021-02-23 | Artery blood taking needle |
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| US6193695B1 (en) * | 2000-01-14 | 2001-02-27 | Wayland J. Rippstein, Jr. | Disposable safety syringe having a retractable needle |
| US20040162523A1 (en) * | 2003-02-19 | 2004-08-19 | Becton Dickinson And Company | Medical device with needle safety shielding |
| JP2005218573A (en) * | 2004-02-04 | 2005-08-18 | Hanako Medical Kk | Needle for blood collecting tube |
| US20150105693A1 (en) * | 2011-12-01 | 2015-04-16 | Shanghai Jinta Medical Co., Ltd. | Disposable Sterile Retracting Blood Taking Needle |
| CN105816189A (en) * | 2015-01-04 | 2016-08-03 | 上海金塔医用器材有限公司 | Anti-needling safety blood taking needle |
| CN105596013A (en) * | 2016-02-06 | 2016-05-25 | 湛江健力源医疗用品有限公司 | Shrinkage safety blood collecting needle |
| CN205795711U (en) * | 2016-05-04 | 2016-12-14 | 中国人民解放军第四军医大学 | A kind of arterial blood drawing pin of convenient operation |
| US20200281514A1 (en) * | 2017-02-10 | 2020-09-10 | Kurin, Inc. | Blood contaminant sequestration device with passive fluid control junction |
| CN107469202A (en) * | 2017-09-16 | 2017-12-15 | 叶天博 | A kind of disposable syringe apparatus for destroying |
| US20190321261A1 (en) * | 2018-04-19 | 2019-10-24 | Becton Dickinson and Company Limited | Syringe Adapter with Aspiration Assembly |
| CN209422660U (en) * | 2018-08-23 | 2019-09-24 | 三峡大学附属仁和医院 | A kind of syringe being automatically separated syringe needle |
| CN209932764U (en) * | 2018-11-28 | 2020-01-14 | 自贡市妇幼保健院 | Anti-acupuncture artery hemostix |
| CN109464726A (en) * | 2018-12-17 | 2019-03-15 | 山东威高集团医用高分子制品股份有限公司 | Unidirectional filtration syringe |
| CN109998567A (en) * | 2019-05-20 | 2019-07-12 | 杨立新 | A kind of automatic needle protection-closing integration vim and vigour acquisition needle |
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