CN105963828B - A kind of intravenous injector syringe needle - Google Patents
A kind of intravenous injector syringe needle Download PDFInfo
- Publication number
- CN105963828B CN105963828B CN201610442185.0A CN201610442185A CN105963828B CN 105963828 B CN105963828 B CN 105963828B CN 201610442185 A CN201610442185 A CN 201610442185A CN 105963828 B CN105963828 B CN 105963828B
- Authority
- CN
- China
- Prior art keywords
- head body
- bell
- valve seat
- wall
- needle head
- 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.)
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
Abstract
The invention discloses a kind of intravenous injector syringe needles, the needle head body for the metal material that the syringe needle is fixedly connected on socket cephalic par by the bell and spigot joint of plastic material and one is constituted, end in bell and spigot joint close to needle head body forms the valve seat of a semi-spherical shape, is equipped with a spherical valve ball in valve seat；The valve seat forms the liquid in-out mouth being connected to needle head body close to the bottom of needle head body, and a step is formed between valve seat end and bell and spigot joint inner wall；One retaining ring is installed, the outer wall of retaining ring and the inner wall of bell and spigot joint are interference fitted and connect, and the inner wall of retaining ring forms multiple interior convex blocks to stop valve ball to be deviate from the step.Speed is not influenced by valve ball when extracting medical fluid using the syringe, when being infused using the syringe.Medical fluid is only flowed through from liquid seam excessively, and the slower patient of flow velocity will not feel good.
Description
This patent is:
Title are as follows: a kind of intravenous injector and intravenous injector syringe needle
Application No. is: 2014103484213
The applying date are as follows: on July 21st, 2014
Patent application divisional application.
Technical field
The invention belongs to medical instruments, and in particular to a kind of intravenous injector.
Background technique
Intravenous injection is a kind of medical method, i.e., the liquid substances such as blood, medical fluid, nutrient solution is injected directly into vein
In;The intravenous injection of transience is mostly directly injected into vein with syringe, i.e., general common " having an injection "；If transience is injected intravenously
Liquid it is more if, situations such as medical staff often accelerates injection speed, some medical staff's hand shaking, also results in moment
Injection speed, but injection speed is too fast, to heart failure and pulmonary edema, especially children, old age, thoracic injury, heart failure
The patient's Yi Fasheng infusion reaction exhausted can become lethal severe reaction when serious.
Summary of the invention
The technical problems to be solved by the present invention are: in view of the deficienciess of the prior art, a kind of simple, the energy that provides structure
Enough normal extraction medical fluids, while the intravenous injector of injection speed can be slowed down.
Purpose to realize the present invention, is achieved using following technical scheme: a kind of intravenous injector includes needle
Cylinder, piston rod and syringe needle, the piston rod end are connected with the piston with syringe cooperation, and the syringe needle matching is socketed in needle
On the syringe needle connector of cylinder front end, the syringe needle is fixedly connected on socket head end by the bell and spigot joint of plastic material and one
The needle head body of the metal material in portion is constituted, and the end in the bell and spigot joint close to needle head body forms a semi-spherical shape
Valve seat is equipped with a spherical valve ball in valve seat；The valve seat close to needle head body bottom formed be connected to needle head body into
Liquid outlet forms a step between valve seat end and bell and spigot joint inner wall；One retaining ring is installed on the step, retaining ring it is outer
The interference fit connection of the inner wall of wall and bell and spigot joint, the inner wall of retaining ring form multiple interior convex blocks to stop valve ball to be deviate from；Institute
The liquid of crossing that the valve base inner wall face stated forms inside a connection liquid in-out mouth and bell and spigot joint stitches；The diameter of the valve ball is valve seat
The 4/5 of locating spherical diameter；The end of each interior convex block is on a circumference with retaining ring outer wall concentric, and institute
The diameter for stating circumference locating for interior convex block is the 3/4 of valve ball diameter；The cross-sectional area of the liquid in-out mouth is that needle head body internal channel is horizontal
The 1/5-1/3 of sectional area.
The present invention also provides a kind of intravenous injector syringe needle, the syringe needle by a plastic material bell and spigot joint and one
The needle head body of a metal material for being fixedly connected on socket cephalic par is constituted, in the bell and spigot joint close to the end of needle head body at
Type has the valve seat of a semi-spherical shape, and a spherical valve ball is equipped in valve seat；The valve seat is close to the bottom of needle head body
The liquid in-out mouth being connected to needle head body is formed, forms a step between valve seat end and bell and spigot joint inner wall；Pacify on the step
Equipped with a retaining ring, the outer wall of retaining ring and the inner wall of bell and spigot joint are interference fitted and connect, and the inner wall of retaining ring forms multiple to hinder
Keep off the interior convex block of valve ball abjection；The valve base inner wall face forms the liquid excessively inside a connection liquid in-out mouth and bell and spigot joint
Seam；The diameter of the valve ball is 4/5 of spherical diameter locating for valve seat；The end of each interior convex block is in one and retaining ring
On the circumference of outer wall concentric, and the diameter of circumference locating for the interior convex block is the 3/4 of valve ball diameter；The cross of the liquid in-out mouth
Sectional area is the 1/5-1/3 of needle head body internal channel cross-sectional area.
Compared with prior art, the beneficial effects of the present invention are: when extracting medical fluid using the syringe, medical fluid is from syringe needle
Body enters, and finally flows into syringe by valve seat and bell and spigot joint, and under medical fluid promotion, valve ball is against on the interior convex block of retaining ring, medicine
Liquid is flowed through from the notch between interior convex block and valve ball, and the speed of extraction medical fluid in this way is not influenced substantially by valve ball.When being infused
When, piston pushes the medical fluid in syringe to flow to needle head body and will push valve ball when medical fluid passes through valve seat and move to needle head body direction,
To which valve ball can block liquid in-out mouth, medical fluid can only flow into needle head body from the liquid seam of crossing on valve seat.Described crosses the transversal of liquid seam
Area be needle head body internal channel cross-sectional area 1/5-1/3, in this way when using it is biggish push piston bar when, from needle head body stream
Medical fluid speed out is also able to maintain lesser flow velocity, will not be because of making power unevenness cause transfusion speed is too fast patient is made to be sick in the stomach
Or heart discomfort etc..The diameter of the valve ball is 4/5 of spherical diameter locating for valve seat, guarantees that valve ball can be stablized in infusion process
Liquid in-out mouth is blocked on ground, passes through medical fluid all only from liquid seam excessively.The diameter of circumference locating for the interior convex block is the 3/ of valve ball diameter
4, on the one hand guarantee that valve ball is not deviate from from retaining ring direction, on the other hand guarantees that the notch between valve ball and interior convex block keeps stable
Bore guarantees the fast speed for extracting medical fluid.
Detailed description of the invention
Fig. 1 is the overall structure diagram of syringe.
Fig. 2 is the schematic cross-sectional view of syringe needle.
1, syringe；11, syringe needle connector；2, piston rod；3, syringe needle；31, bell and spigot joint；32, valve seat；33, needle head body；34, it keeps off
Circle；341, interior convex block；35, valve ball；36, liquid seam is crossed；37, liquid in-out mouth.
Specific embodiment
A specific embodiment of the invention is made a detailed explanation below according to attached drawing.
Embodiment 1
According to Fig. 1 to 2, a kind of intravenous injector described in the present embodiment includes syringe 1, piston rod 2 and needle
Head, the piston rod end are connected with the piston with syringe cooperation, and the syringe needle matching is socketed in the syringe needle of syringe front end
On connector 11, the syringe needle 3 is fixedly connected on the gold of socket cephalic par by the bell and spigot joint 31 of a plastic material and one
The needle head body 33 for belonging to material is constituted, and the end in the bell and spigot joint close to needle head body forms the valve seat of a semi-spherical shape
32, a spherical valve ball 35 is installed in valve seat；The valve seat close to needle head body bottom formed be connected to needle head body into
Liquid outlet 37 forms a step between valve seat end and bell and spigot joint inner wall；One retaining ring 34, retaining ring are installed on the step
Outer wall and bell and spigot joint inner wall be interference fitted connect, the inner wall of retaining ring form it is multiple to stop valve ball deviate from interior convex blocks
341；The liquid of crossing that the valve base inner wall face forms inside a connection liquid in-out mouth and bell and spigot joint stitches 36；The valve ball it is straight
Diameter is 4/5 of spherical diameter locating for valve seat；The end of each interior convex block is in one and the circle of retaining ring outer wall concentric
Zhou Shang, and the diameter of circumference locating for the interior convex block is the 3/4 of valve ball diameter；The cross-sectional area of the liquid in-out mouth is needle head body
The 1/5-1/3 of internal channel cross-sectional area.
When extracting medical fluid using the syringe, medical fluid enters from needle head body, finally flows into syringe by valve seat and bell and spigot joint
Interior, under medical fluid promotion, valve ball is against on the interior convex block of retaining ring, and medical fluid is flowed through from the notch between interior convex block and valve ball, in this way
The speed for extracting medical fluid is not influenced substantially by valve ball.When being infused, piston pushes the medical fluid in syringe to flow to needle head body, medicine
When liquid passes through valve seat, it will push valve ball and moved to needle head body direction, so that valve ball can block liquid in-out mouth, medical fluid can only be from valve seat
On cross liquid seam flow into needle head body.The cross-sectional area for crossing liquid seam is the 1/5-1/3 of needle head body internal channel cross-sectional area, this
Sample when using it is biggish push piston bar when, from needle head body flow out medical fluid speed be also able to maintain lesser flow velocity, Bu Huiyin
To make power unevenness cause transfusion speed is too fast patient is made to be sick in the stomach or heart discomfort etc..The diameter of the valve ball is locating for valve seat
The 4/5 of spherical diameter guarantees that valve ball can steadily block liquid in-out mouth in infusion process, keeps medical fluid all only logical from liquid seam is crossed
It crosses.The diameter of circumference locating for the interior convex block is the 3/4 of valve ball diameter, on the one hand guarantees that valve ball is not deviate from from retaining ring direction, separately
On the one hand guarantee that the notch between valve ball and interior convex block keeps stable bore, guarantee the fast speed for extracting medical fluid.Described
Retaining ring is attached in syringe needle in advance before injector package.After the syringe needle is connected on syringe needle connector by bell and spigot joint set, syringe needle
The end of connector holds out against retaining ring, and retaining ring is entirely limited will not drop out between syringe needle fitting end and valve seat, retaining ring and socket
It does not need to be fixed using glue or other means between head, it is easy to assembly.
Embodiment 2
According to Fig. 1 to 2, a kind of intravenous injector syringe needle described in the present embodiment, the syringe needle 3 is by a plastics
The needle head body 33 of the bell and spigot joint 31 of material and a metal material for being fixedly connected on socket cephalic par is constituted, the socket
End in head close to needle head body forms the valve seat 32 of a semi-spherical shape, is equipped with a spherical valve ball in valve seat
35；The valve seat forms the liquid in-out mouth 37 being connected to needle head body, valve seat end and bell and spigot joint inner wall close to the bottom of needle head body
Between formed a step；One retaining ring 34 is installed, the outer wall of retaining ring and the inner wall of bell and spigot joint are interference fitted on the step
Connection, the inner wall of retaining ring form multiple interior convex blocks 341 to stop valve ball to be deviate from；The valve base inner wall face forms one
Liquid seam 36 is crossed inside a connection liquid in-out mouth and bell and spigot joint；The diameter of the valve ball is 4/5 of spherical diameter locating for valve seat；Institute
The end for each interior convex block stated is on a circumference with retaining ring outer wall concentric, and circumference locating for the interior convex block is straight
Diameter is the 3/4 of valve ball diameter；The cross-sectional area of the liquid in-out mouth is the 1/5-1/3 of needle head body internal channel cross-sectional area.
Syringe includes syringe 1, piston rod 2 and the syringe needle 3, and the piston rod end is connected with and the syringe
The matching of bell and spigot joint 31 of the piston of cooperation, the syringe needle 3 is socketed on the syringe needle connector 11 of syringe front end, syringe needle energy of the invention
Enough intravenous injector adapteds with various different size models.
When extracting medical fluid using the syringe equipped with the syringe needle, medical fluid enters from needle head body, most by valve seat and bell and spigot joint
It flows into syringe afterwards, under medical fluid promotion, valve ball is against on the interior convex block of retaining ring, and medical fluid is from the notch between interior convex block and valve ball
It flows through, the speed of extraction medical fluid in this way is not influenced substantially by valve ball.When being infused, piston pushes the medical fluid flow direction in syringe
Needle head body will push valve ball and move to needle head body direction, so that valve ball can block liquid in-out mouth, medical fluid when medical fluid passes through valve seat
Needle head body can only be flowed into from the liquid seam of crossing on valve seat.The cross-sectional area for crossing liquid seam is needle head body internal channel cross-sectional area
, in this way when using it is biggish push piston bar when, from needle head body flow out medical fluid speed be also able to maintain lesser stream
Speed, will not be because of making power unevenness cause transfusion speed is too fast patient is made to be sick in the stomach or heart discomfort etc..The diameter of the valve ball
Be 4/5 of spherical diameter locating for valve seat, guarantee infusion process in valve ball can steadily block liquid in-out mouth, make medical fluid all only from
Liquid seam is crossed to pass through.The diameter of circumference locating for the interior convex block is the 3/4 of valve ball diameter, on the one hand guarantees valve ball not from retaining ring direction
On the other hand abjection guarantees that the notch between valve ball and interior convex block keeps stable bore, guarantees the fast speed for extracting medical fluid.
The retaining ring is attached in syringe needle in advance before injector package.The syringe needle is connected on syringe needle connector by bell and spigot joint set
Afterwards, the end of syringe needle connector holds out against retaining ring, and retaining ring is entirely limited will not drop out between syringe needle fitting end and valve seat, retaining ring
It does not need to be fixed using glue or other means between bell and spigot joint, it is easy to assembly.
Claims (1)
1. a kind of intravenous injector syringe needle, the syringe needle is fixedly connected on set by the bell and spigot joint of plastic material and one
The needle head body of the metal material of fitting end is constituted, it is characterised in that: is formed in the bell and spigot joint close to the end of needle head body
There is the valve seat of a semi-spherical shape, a spherical valve ball is installed in valve seat；Bottom shape of the valve seat close to needle head body
At the liquid in-out mouth being connected to needle head body, a step is formed between valve seat end and bell and spigot joint inner wall；It is installed on the step
There is a retaining ring, the outer wall of retaining ring and the inner wall of bell and spigot joint are interference fitted and connect, and the inner wall of retaining ring forms multiple to stop
The interior convex block of valve ball abjection；The liquid of crossing that the valve base inner wall face forms inside a connection liquid in-out mouth and bell and spigot joint stitches；
The diameter of the valve ball is 4/5 of spherical diameter locating for valve seat；The end of multiple interior convex blocks is outside one and retaining ring
On the circumference of wall concentric, and the diameter of circumference locating for the end of the interior convex block is the 3/4 of valve ball diameter；The liquid in-out mouth
Cross-sectional area be needle head body internal channel cross-sectional area 1/5-1/3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610442185.0A CN105963828B (en) | 2014-07-21 | 2014-07-21 | A kind of intravenous injector syringe needle |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410348421.3A CN104083818B (en) | 2014-07-21 | 2014-07-21 | A kind of intravenous injector and intravenous injector syringe needle |
| CN201610442185.0A CN105963828B (en) | 2014-07-21 | 2014-07-21 | A kind of intravenous injector syringe needle |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410348421.3A Division CN104083818B (en) | 2014-07-21 | 2014-07-21 | A kind of intravenous injector and intravenous injector syringe needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105963828A CN105963828A (en) | 2016-09-28 |
| CN105963828B true CN105963828B (en) | 2019-01-01 |
Family
ID=51631639
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610442185.0A Active CN105963828B (en) | 2014-07-21 | 2014-07-21 | A kind of intravenous injector syringe needle |
| CN201410348421.3A Active CN104083818B (en) | 2014-07-21 | 2014-07-21 | A kind of intravenous injector and intravenous injector syringe needle |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410348421.3A Active CN104083818B (en) | 2014-07-21 | 2014-07-21 | A kind of intravenous injector and intravenous injector syringe needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN105963828B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4850966A (en) * | 1986-02-26 | 1989-07-25 | Hoechst Aktiengesellschaft | Device for the administration of medicament suspensions |
| CN1060217A (en) * | 1990-08-29 | 1992-04-15 | 约翰·亨利·亚当·巴特勒 | Valve for syringe |
| CN2244409Y (en) * | 1995-04-11 | 1997-01-08 | 张永珍 | Ball valve single-flowing direction syringe needle |
| CN201337503Y (en) * | 2009-02-07 | 2009-11-04 | 徐士林 | Anocelia puncture needle with protection valve |
| CN101797411A (en) * | 2010-03-18 | 2010-08-11 | 傅雅芬 | Air-pressure type needleless injector power head |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2327885A (en) * | 1997-08-02 | 1999-02-10 | Nmt Group Plc | Filling needle |
| US6017332A (en) * | 1997-10-20 | 2000-01-25 | Urrutia; Hector | Medical dye delivery system |
| CN2474154Y (en) * | 2001-03-12 | 2002-01-30 | 李晓燕 | Intravenous injector |
| CN2638758Y (en) * | 2003-09-03 | 2004-09-08 | 何东华 | Pneumothorax puncture needle |
| CN201108644Y (en) * | 2007-11-16 | 2008-09-03 | 马君秀 | Improved syringe |
-
2014
- 2014-07-21 CN CN201610442185.0A patent/CN105963828B/en active Active
- 2014-07-21 CN CN201410348421.3A patent/CN104083818B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4850966A (en) * | 1986-02-26 | 1989-07-25 | Hoechst Aktiengesellschaft | Device for the administration of medicament suspensions |
| US4850966B1 (en) * | 1986-02-26 | 1994-09-06 | Hoechst Ag | Device for the administration of medicament suspensions |
| CN1060217A (en) * | 1990-08-29 | 1992-04-15 | 约翰·亨利·亚当·巴特勒 | Valve for syringe |
| CN2244409Y (en) * | 1995-04-11 | 1997-01-08 | 张永珍 | Ball valve single-flowing direction syringe needle |
| CN201337503Y (en) * | 2009-02-07 | 2009-11-04 | 徐士林 | Anocelia puncture needle with protection valve |
| CN101797411A (en) * | 2010-03-18 | 2010-08-11 | 傅雅芬 | Air-pressure type needleless injector power head |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104083818A (en) | 2014-10-08 |
| CN104083818B (en) | 2016-08-17 |
| CN105963828A (en) | 2016-09-28 |
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