CN112220995B - Medical syringe - Google Patents
Medical syringe Download PDFInfo
- Publication number
- CN112220995B CN112220995B CN202011230566.5A CN202011230566A CN112220995B CN 112220995 B CN112220995 B CN 112220995B CN 202011230566 A CN202011230566 A CN 202011230566A CN 112220995 B CN112220995 B CN 112220995B
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- CN
- China
- Prior art keywords
- piston
- groove
- needle
- needle cap
- sliding
- 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
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- 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
-
- 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
- A61M5/3129—Syringe barrels
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention relates to the technical field of medical instruments. The medical injector comprises a needle tube, a needle cap and a piston, wherein the piston is in clearance fit with the needle tube, a plurality of sliding chutes are circumferentially arranged on the inner wall of the needle tube, convex blocks are slidably connected in the sliding chutes, and springs are arranged between the convex blocks and the sliding chutes; a plurality of limiting grooves for the protruding blocks to extend into are circumferentially arranged on the outer wall of the piston, and the limiting grooves are positioned between two adjacent sliding grooves; when the piston rotates, the sliding groove is positioned on the motion track of the limiting groove. This scheme has mainly solved present needle tubing and piston not good to the spacing effect of needle cap, leads to the needle cap to drop easily for the piston can reverse rebound, influences the problem of hydrops collection effect.
Description
Technical Field
The invention relates to the technical field of medical instruments.
Background
Currently, in order to treat diseases, patients need to go to hospitals for surgical treatment; after operation, some patients need to place a drainage tube in their body in order to drain the accumulated fluid in their body.
At present, a hospital mainly uses an injector to extract accumulated liquid in a patient, the injector comprises a needle tube, a needle head, a needle cap and a piston, when in operation, the needle head and the needle cap are taken down, the needle head is not used, and the needle tube and a drainage tube are connected through a transfusion needle; medical staff need to hold the needle cap to squeeze the piston to move downwards in the needle tube, so that negative pressure is generated in the needle tube to extract effusion in the body of a patient; when the piston moves to the position that the distance between the piston and the needle tube is equal to the length of the needle cap, the piston stops moving, and the needle cap is limited between the needle tube and the piston, so that the piston is limited; after the operation is finished, the medical staff can place the needle tube on a sickbed or a patient and stand for a period of time, so that the continuous extraction work of the accumulated liquid is realized; in the actual operation process, needle tubing and piston are not good to the spacing effect of needle cap, lead to the needle cap to drop easily for the piston can reverse rebound, will direct influence the collection effect to the hydrops.
Disclosure of Invention
The invention aims to provide a medical injector to solve the problems that the needle cap is easy to drop and the piston can move upwards in a reverse direction to influence the collection effect of accumulated liquid due to poor limiting effect of the needle tube and the piston on the needle cap at present.
In order to achieve the above object, the basic scheme of the invention is as follows: a medical injector comprises a needle tube, a needle cap and a piston, wherein the piston is in clearance fit with the needle tube, a plurality of sliding chutes are circumferentially arranged on the inner wall of the needle tube, convex blocks are slidably connected in the sliding chutes, and springs are arranged between the convex blocks and the sliding chutes; a plurality of limiting grooves for the protruding blocks to extend into are circumferentially arranged on the outer wall of the piston, and the limiting grooves are positioned between two adjacent sliding grooves; when the piston rotates, the sliding groove is positioned on the motion track of the limiting groove.
The advantages of the basic scheme are:
1. according to the scheme, the needle cap is limited between the needle tube and the piston to limit the piston in the vertical direction, so that the piston is prevented from sliding in the vertical direction; rotate the piston again for spout and spacing groove communicate with each other, and the lug stretches into the spacing inslot under the effect of spring, compare in prior art, and this scheme stretches into the spacing groove through the lug and can strengthen the spacing effect to the piston, can effectively avoid piston rotation and vertical movement, has improved the spacing stability of piston promptly, makes the hydrops can last, stably by the extraction, and then has guaranteed the collection effect to the hydrops.
2. This scheme can realize the ascending spacing of piston vertical side through the needle cap, and the rethread boss stretches into spacing inslot and can realize the vertical direction of piston and spacing ascending week, realizes spacing to the piston through a plurality of spacing modes promptly, has strengthened the spacing effect to the piston.
3. This scheme makes spout and spacing groove communicate with each other through the mode of rotating the piston for the lug is automatic to be stretched into the spacing inslot under the effect of spring to this realizes spacing to the piston, and the operating mode is simple and convenient, and the practicality is strong.
Further, the side wall of the bump is provided with a rubber block, and the width of the sliding groove and the width of the limiting groove are not less than the sum of the width of the bump and the length of the rubber block; and the side wall of the limiting groove is provided with a side groove for the rubber block to extend into, and when the piston continues to rotate after the lug and the rubber block extend into the limiting groove, the side groove is positioned on the motion track of the rubber block.
Through the arrangement, when the piston is limited in the vertical direction, the piston is rotated, so that the sliding groove is communicated with the limiting groove, and the lug and the rubber block extend into the limiting groove under the action of the spring; continue to rotate the piston, the piston drives lug and block rubber and continues to rotate for the block rubber stretches into the side inslot, with this realization to the spacing of block rubber, and then realize spacing to the lug promptly, avoid piston rotation and vertical movement, and then strengthen the spacing effect to the piston.
Further, the width of the rubber block is larger than that of the side groove.
Through the arrangement, the width of the rubber block is greater than that of the side groove, and the rubber block has elasticity, so that the rubber block extends into the side groove, and the rubber block is in interference fit with the side groove, so that the limiting effect on the lug is enhanced, and the limiting effect on the piston is further enhanced.
Furthermore, a transverse groove is formed in the bottom of the needle tube, an arc-shaped block used for pressing the needle cap is connected in the transverse groove in a sliding mode, and when the piston rotates, the needle cap is located on the motion track of the arc-shaped block; a side arm of the piston is provided with a vertical groove, a linkage block is connected in the vertical groove in a sliding manner, and the vertical groove is positioned below the limiting groove; a straight thin rope is arranged between the linkage block and the arc-shaped block.
Through the arrangement, in the process that the piston moves downwards, the linkage block moves downwards in the vertical groove; when the piston is limited in the vertical direction, the linkage block stops moving; during the rotation of the piston, the piston rotates through the linkage block and the string, so that the string is wound on the piston; meanwhile, the thin rope pulls the arc-shaped block to move towards the needle cap along the path of the transverse groove; when the piston week was spacing upwards, the arc piece compressed tightly the needle cap on the outer wall of piston to this realization is spacing to the needle cap, and then strengthens the spacing effect to the needle cap, strengthens the spacing effect to the piston promptly.
Further, the arc length of the arc-shaped block is larger than the arc length of the piston in rotation.
Through the arrangement, the needle cap rotates along with the rotation of the piston, so that the arc length of the rotation of the piston is the same as that of the rotation of the needle cap; the arc length of the arc-shaped block is greater than the arc length of the piston in rotation, so that the arc length of the arc-shaped block is greater than the arc length of the needle cap in rotation, the needle cap is guaranteed to be always located on the motion track of the arc-shaped block, and the limiting effect of the arc-shaped block on the needle cap is guaranteed.
Furthermore, a cavity is arranged in the piston, a rotating shaft is rotatably connected in the cavity, and a first gear and a second gear are arranged on the rotating shaft; a first auxiliary groove is formed in the side wall of the piston, is positioned below the vertical groove and is communicated with the cavity, and a first rack meshed with a first gear is connected in the first auxiliary groove in a sliding mode; the bottom of the piston is provided with a second auxiliary groove, the second auxiliary groove is positioned below the first auxiliary groove and communicated with the cavity, a second rack meshed with a second gear is connected in the second auxiliary groove in a sliding manner, and a pressing plate used for pressing the needle cap is arranged on the second rack.
Through the arrangement, in the process that the piston moves downwards, the linkage block moves downwards in the vertical groove; when the piston is limited in the vertical direction, the linkage block stops moving; during the rotation of the piston, the piston rotates through the linkage block and the string, so that the string is wound on the piston, and the string pulls the arc-shaped block to move towards the needle cap along the path of the transverse groove; the arc-shaped block continues to move, and the arc-shaped block extrudes the needle cap to move towards the direction of the piston; when the piston is limited in the circumferential direction, the needle cap is pressed on the outer wall of the piston by the arc-shaped block. When the arc block extrudes the needle cap to move towards the piston direction, the needle cap extrudes the first rack to move towards the chamber, the rotating shaft is driven to rotate through the meshing of the first rack and the first gear, the rotating shaft drives the second gear to rotate, the second rack is driven to move towards the chamber through the meshing of the second gear and the second rack, and the second rack is provided with a movable platen to move towards the needle cap; when the piston spacing in the week, the clamp plate compresses tightly the needle cap on the outer wall of piston to this realizes spacing to needle cap lower half, and strengthens the spacing effect to the needle cap, strengthens the spacing effect to the piston promptly.
Drawings
FIG. 1 is a partial cross-sectional view in elevation of one embodiment of a medical injector according to the present invention;
fig. 2 is a sectional view taken along a-a in fig. 1.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the needle tube comprises a needle tube 1, a needle cap 2, a piston 3, a convex block 4, a spring 5, a limiting groove 6, a rubber block 7, a side groove 8, an arc-shaped block 9, a linkage block 10, a string 11, a chamber 12, a rotating shaft 13, a first gear 14, a second gear 15, a first rack 16, a second rack 17 and a pressing plate 18.
Examples
Substantially as shown in figures 1 and 2: a medical injector comprises a needle tube 1, a needle cap 2 and a piston 3, wherein the piston 3 can vertically slide and rotate in the needle tube 1; a plurality of sliding grooves are formed in the inner wall of the needle tube 1 in the circumferential direction, a convex block 4 which is abutted against the outer wall of the piston 3 is connected in the sliding grooves in a sliding mode, a spring 5 is fixedly connected between the convex block 4 and the sliding grooves, and the spring 5 is compressed in the initial state; a plurality of limiting grooves 6 for the protruding blocks 4 to extend into are circumferentially formed in the outer wall of the piston 3, and the limiting grooves 6 are located between every two adjacent sliding grooves; when the piston 3 rotates, the sliding groove is positioned on the motion track of the limiting groove 6.
The side wall of the lug 4 is fixedly connected with a rubber block 7, the free end of the rubber block 7 is conical, the width of the sliding groove is greater than the sum of the width of the lug 4 and the length of the rubber block 7, and the width of the limiting groove 6 is greater than the sum of the width of the lug 4 and the length of the rubber block 7; the lateral wall of the limiting groove 6 is provided with a lateral groove 8 for the rubber block 7 to extend into, and when the piston 3 continues to rotate after the lug 4 and the rubber block 7 extend into the limiting groove 6, the lateral groove 8 is positioned on the motion track of the rubber block 7. The width of the rubber block 7 is greater than the width of the side groove 8.
The bottom of the needle tube 1 is provided with a transverse groove, an arc-shaped block 9 for pressing the needle cap 2 is connected in the transverse groove in a sliding mode, and when the piston 3 rotates, the needle cap 2 is located on the motion track of the arc-shaped block 9; a side arm of the piston 3 is provided with a vertical groove, a linkage block 10 is connected in the vertical groove in a sliding way, and the vertical groove is positioned below the limiting groove 6; a straight string 11 is fixedly connected between the linkage block 10 and the arc block 9.
A chamber 12 is formed in the piston 3, a rotating shaft 13 is rotatably connected in the chamber 12, and a first gear 14 and a second gear 15 are fixedly connected on the rotating shaft 13; a first auxiliary groove is formed in the side wall of the piston 3, is positioned below the vertical groove and is communicated with the chamber 12, and a first rack 16 meshed with a first gear 14 is connected in the first auxiliary groove in a sliding manner; the bottom of the piston 3 is provided with a second auxiliary groove which is positioned below the first auxiliary groove and communicated with the chamber 12, a second rack 17 meshed with the second gear 15 is connected in the second auxiliary groove in a sliding way, and a pressing plate 18 used for pressing the needle cap 2 is fixedly connected on the second rack 17.
The specific implementation process is as follows:
taking down the needle head and the needle cap 2, connecting the needle head 1 with a drainage tube through a transfusion needle without using the needle head; medical staff need to hold the needle cap 2 to squeeze the piston 3 to move downwards in the needle tube 1, so that negative pressure is generated in the needle tube 1 and is used for extracting effusion from the body of a patient; when the piston 3 moves to the distance between the piston 3 and the needle tube 1 and is equal to the length of the needle cap 2, the piston 3 stops moving, the needle cap 2 is limited between the needle tube 1 and the piston 3 at the moment, and then the piston 3 is limited in the vertical direction, and the piston 3 is prevented from sliding in the vertical direction.
In this embodiment, the needle cap 2 abuts against the first rack 16; the upper half part of the needle cap 2 is positioned between the piston 3 and the arc-shaped block 9, and the lower half part of the needle cap 2 is positioned between the piston 3 and the pressure plate 18.
When the piston 3 is limited in the vertical direction, the piston 3 is rotated to enable the sliding groove to be communicated with the limiting groove 6, and the convex block 4 and the rubber block 7 extend into the limiting groove 6 under the action of the spring 5; continue to rotate piston 3, piston 3 drives lug 4 and rubber block 7 and continues to rotate, because the width of rubber block 7 is greater than the width of side channel 8, and rubber block 7 has elasticity, make rubber block 7 stretch into in the side channel 8, and rubber block 7 and 8 interference fit of side channel, realize spacing to rubber block 7 with this, and then realize spacing to lug 4, realize spacing to piston 3 promptly, avoid piston 3 to rotate and vertical migration, and then strengthen spacing effect to piston 3, piston 3 spacing stability has been improved promptly, make the hydrops can last, stably by the extraction, and then guaranteed the collection effect to the hydrops.
In the process that the piston 3 moves downwards, the linkage block 10 moves downwards in the vertical groove; when the piston 3 is limited in the vertical direction, the linkage block 10 stops moving; during the rotation of the piston 3, the piston 3 is rotated by the linkage block 10 and the string 11, so that the string 11 is wound on the piston 3; meanwhile, the thin rope 11 pulls the arc-shaped block 9 to move towards the needle cap 2 along the path of the transverse groove; the arc-shaped block 9 continues to move, and the arc-shaped block 9 extrudes the needle cap 2 to move towards the direction of the chamber 12; when 3 week of piston go up spacing, arc piece 9 compresses tightly needle cap 2 on the outer wall of piston 3 to this realizes the spacing to needle cap 2 first, and then strengthens the spacing effect to needle cap 2, strengthens the spacing effect to piston 3 promptly.
During the period that the arc-shaped block 9 extrudes the needle cap 2 to move towards the direction of the piston 3, the needle cap 2 extrudes the first rack 16 to move towards the chamber 12, the rotating shaft 13 is driven to rotate by the meshing of the first rack 16 and the first gear 14, the rotating shaft 13 drives the second gear 15 to rotate, the second rack 17 is driven to move towards the chamber 12 by the meshing of the second gear 15 and the second rack 17, and the second rack 17 drives the pressing plate 18 to move towards the direction of the needle cap 2; when the piston 3 is limited in the circumferential direction, the pressing plate 18 presses the needle cap 2 against the outer wall of the piston 3, so that the lower half part of the needle cap 2 is limited, and the limiting effect on the needle cap 2, namely the limiting effect on the piston 3, is enhanced.
In this embodiment, the arc length of the arc-shaped block 9 is greater than the arc length of the rotation of the piston 3; the needle cap 2 rotates along with the rotation of the piston 3, so that the arc length of the rotation of the piston 3 is the same as that of the rotation of the needle cap 2; the arc length of the arc-shaped block 9 is larger than the arc length of the piston 3, so that the arc length of the arc-shaped block 9 is larger than the arc length of the needle cap 2, and the needle cap 2 is guaranteed to be always located on the motion track of the arc-shaped block 9, namely the limiting effect of the arc-shaped block 9 on the needle cap 2 is guaranteed.
The foregoing is merely an example of the present invention and common general knowledge in the art of specific structures and/or features of the invention has not been set forth herein in any way. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (5)
1. The utility model provides a medical injector, includes needle tubing, needle cap and piston, piston and needle tubing clearance fit, its characterized in that: a plurality of sliding grooves are circumferentially arranged on the inner wall of the needle tube, convex blocks are connected in the sliding grooves in a sliding mode, and springs are arranged between the convex blocks and the sliding grooves; a plurality of limiting grooves for the protruding blocks to extend into are circumferentially arranged on the outer wall of the piston, and the limiting grooves are positioned between two adjacent sliding grooves; when the piston rotates, the sliding groove is positioned on the motion track of the limiting groove; the bottom of the needle tube is provided with a transverse groove, an arc-shaped block for pressing the needle cap is connected in the transverse groove in a sliding mode, and when the piston rotates, the needle cap is located on the motion track of the arc-shaped block; a side arm of the piston is provided with a vertical groove, a linkage block is connected in the vertical groove in a sliding manner, and the vertical groove is positioned below the limiting groove; a straight thin rope is arranged between the linkage block and the arc-shaped block.
2. The medical injector of claim 1, wherein: the side wall of the lug is provided with a rubber block, and the width of the sliding groove and the width of the limiting groove are not less than the sum of the width of the lug and the length of the rubber block; and the side wall of the limiting groove is provided with a side groove for the rubber block to extend into, and when the piston continues to rotate after the lug and the rubber block extend into the limiting groove, the side groove is positioned on the motion track of the rubber block.
3. The medical injector of claim 2, wherein: the width of the rubber block is larger than that of the side groove.
4. The medical injector of claim 3, wherein: the arc length of the arc-shaped block is larger than the arc length of the piston in rotation.
5. The medical injector of claim 4, wherein: a cavity is arranged in the piston, a rotating shaft is rotatably connected in the cavity, and a first gear and a second gear are arranged on the rotating shaft; a first auxiliary groove is formed in the side wall of the piston, is positioned below the vertical groove and is communicated with the cavity, and a first rack meshed with a first gear is connected in the first auxiliary groove in a sliding mode; the bottom of the piston is provided with a second auxiliary groove, the second auxiliary groove is positioned below the first auxiliary groove and communicated with the cavity, a second rack meshed with a second gear is connected in the second auxiliary groove in a sliding manner, and a pressing plate used for pressing the needle cap is arranged on the second rack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011230566.5A CN112220995B (en) | 2020-11-06 | 2020-11-06 | Medical syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011230566.5A CN112220995B (en) | 2020-11-06 | 2020-11-06 | Medical syringe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112220995A CN112220995A (en) | 2021-01-15 |
| CN112220995B true CN112220995B (en) | 2022-04-15 |
Family
ID=74122085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011230566.5A Active CN112220995B (en) | 2020-11-06 | 2020-11-06 | Medical syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112220995B (en) |
Citations (10)
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| FR2636537A1 (en) * | 1988-09-16 | 1990-03-23 | Garde Claude | Suction and withdrawal syringe |
| US5814023A (en) * | 1997-09-19 | 1998-09-29 | Para Tech Industries, Inc. | Aspirator syringe operator |
| WO2012020957A2 (en) * | 2010-08-13 | 2012-02-16 | Cho Joongbum | Syringe that is operable by one-hand |
| CN104258475A (en) * | 2014-10-14 | 2015-01-07 | 山东省立医院 | Injection type negative pressure drainage device |
| KR101742905B1 (en) * | 2016-02-04 | 2017-05-31 | 가톨릭대학교 산학협력단 | Disposable syringe fine needle aspiration cytology |
| TWM545602U (en) * | 2016-08-22 | 2017-07-21 | Wing Young Co Ltd | Safe syringe structure |
| CN208942892U (en) * | 2018-06-19 | 2019-06-07 | 董莹 | A kind of washing pipe tube-sealing solution draw-out device |
| CN110025833A (en) * | 2019-05-07 | 2019-07-19 | 河南康谱生物科技有限公司 | A kind of auto fat living cell extraction equipment |
| CN209475295U (en) * | 2018-09-25 | 2019-10-11 | 简际鸿 | A kind of new disposable vaccine inoculation device |
| CN210728350U (en) * | 2019-02-18 | 2020-06-12 | 厦门市第五医院(厦门市同民医院) | Analgesia pump based on 3D printing technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6719735B1 (en) * | 2003-02-28 | 2004-04-13 | Gammon Technical Products, Inc. | Syringe adapter |
| US9352096B2 (en) * | 2009-08-21 | 2016-05-31 | Becton Dickinson France | Syringe assembly with inverse delivery |
| DE202011100238U1 (en) * | 2011-05-04 | 2011-08-09 | Volker Kund | Device for one-handed, bidirectional actuation of a piston of a syringe |
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2020
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Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2636537A1 (en) * | 1988-09-16 | 1990-03-23 | Garde Claude | Suction and withdrawal syringe |
| US5814023A (en) * | 1997-09-19 | 1998-09-29 | Para Tech Industries, Inc. | Aspirator syringe operator |
| WO2012020957A2 (en) * | 2010-08-13 | 2012-02-16 | Cho Joongbum | Syringe that is operable by one-hand |
| CN104258475A (en) * | 2014-10-14 | 2015-01-07 | 山东省立医院 | Injection type negative pressure drainage device |
| KR101742905B1 (en) * | 2016-02-04 | 2017-05-31 | 가톨릭대학교 산학협력단 | Disposable syringe fine needle aspiration cytology |
| TWM545602U (en) * | 2016-08-22 | 2017-07-21 | Wing Young Co Ltd | Safe syringe structure |
| CN208942892U (en) * | 2018-06-19 | 2019-06-07 | 董莹 | A kind of washing pipe tube-sealing solution draw-out device |
| CN209475295U (en) * | 2018-09-25 | 2019-10-11 | 简际鸿 | A kind of new disposable vaccine inoculation device |
| CN210728350U (en) * | 2019-02-18 | 2020-06-12 | 厦门市第五医院(厦门市同民医院) | Analgesia pump based on 3D printing technology |
| CN110025833A (en) * | 2019-05-07 | 2019-07-19 | 河南康谱生物科技有限公司 | A kind of auto fat living cell extraction equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112220995A (en) | 2021-01-15 |
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