CN110051898B - Disposable trocar for dialysis - Google Patents
Disposable trocar for dialysis Download PDFInfo
- Publication number
- CN110051898B CN110051898B CN201910495109.XA CN201910495109A CN110051898B CN 110051898 B CN110051898 B CN 110051898B CN 201910495109 A CN201910495109 A CN 201910495109A CN 110051898 B CN110051898 B CN 110051898B
- Authority
- CN
- China
- Prior art keywords
- rubber plug
- steel needle
- sleeve
- trocar
- 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.)
- Active
Links
- 238000000502 dialysis Methods 0.000 title claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 46
- 239000010959 steel Substances 0.000 claims abstract description 46
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000741 silica gel Substances 0.000 claims abstract description 10
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims abstract description 7
- 239000012528 membrane Substances 0.000 claims description 3
- 239000008280 blood Substances 0.000 abstract description 12
- 210000004369 blood Anatomy 0.000 abstract description 12
- 239000000853 adhesive Substances 0.000 abstract description 6
- 230000001070 adhesive effect Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 6
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 210000004204 blood vessel Anatomy 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 208000026935 allergic disease Diseases 0.000 description 1
- 230000007815 allergy Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001631 haemodialysis Methods 0.000 description 1
- 230000000322 hemodialysis Effects 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
- A61M1/3621—Extra-corporeal blood circuits
- A61M1/3653—Interfaces between patient blood circulation and extra-corporal blood circuit
- A61M1/3659—Cannulae pertaining to extracorporeal circulation
- A61M1/3661—Cannulae pertaining to extracorporeal circulation for haemodialysis
-
- 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
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/06—Body-piercing guide needles or the like
- A61M25/0606—"Over-the-needle" catheter assemblies, e.g. I.V. catheters
-
- 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
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/06—Body-piercing guide needles or the like
- A61M25/065—Guide needles
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Public Health (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Veterinary Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- Biophysics (AREA)
- Vascular Medicine (AREA)
- Urology & Nephrology (AREA)
- Cardiology (AREA)
- External Artificial Organs (AREA)
Abstract
The invention provides a disposable dialysis trocar, which is characterized in that the contact position with blood is in a physical environment-friendly connection mode when the disposable dialysis trocar is used, no adhesive is needed, the safety of a human body is ensured by using a connection material, the disposable dialysis trocar comprises a steel needle, a sleeve seat, a silicone tube, a luer connector, a screw cap, a rubber plug structure, a protection device and the steel needle seat which are sequentially arranged, wherein the rear flaring end of the sleeve is connected with the front end socket of the sleeve seat through a silica gel tube, the rear positioning end of the sleeve seat is connected with the front positioning end of the luer connector through the silica gel tube, the rear end of the luer connector is in threaded connection with a screw cap, the rear end of the screw cap is provided with a rear end clamping block, the rear end clamping block is clamped at the front part of the rubber plug structure, the rear end of the rubber plug structure is clamped in an installation cavity of the protection device, the tail end of the steel needle is connected with the installation cavity of the steel needle seat, and the front end of the steel needle sequentially penetrates through the protection device, the rubber plug structure, the luer connector, the screw cap, the silicone tube and the sleeve seat are sequentially surrounded by the sleeve.
Description
Technical Field
The invention relates to the technical field of trocar structures, in particular to a disposable trocar for dialysis.
Background
Currently, most of the hemodialysis trocars on the market require the use of adhesive aids or metal aids in the connection of the various components in contact with the blood, which jeopardize: 1, the adhesive has more or less chemical harmful components, and patients can be endangered when in use; 2 metal auxiliaries can cause symptoms of nickel allergy in some patients; for this reason, there is a need to develop a trocar for dialysis that does not cause injury to the human body.
Disclosure of Invention
In order to solve the problems, the invention provides a disposable trocar for dialysis, wherein the contact positions of the disposable trocar and blood are all in a physical environment-friendly connection mode, no adhesive is needed, and the safety of a human body is ensured by the connection materials during use.
The technical scheme is as follows: a disposable dialysis trocar, characterized in that: the novel luer connector comprises a steel needle, a sleeve seat, a silicone tube, a luer connector, a screw cap, a rubber plug structure, a protection device and a steel needle seat, wherein the sleeve, the sleeve seat, the silicone tube, the luer connector, the screw cap, the rubber plug structure, the protection device and the steel needle seat are sequentially arranged, the rear flaring end of the sleeve is connected with the front inserting opening of the sleeve seat in a hot melting mode, the rear positioning end of the sleeve seat and the front positioning end of the luer connector are connected through the silicone tube, the two ends of the silicone tube are respectively tightly sleeved on the rear positioning end of the sleeve seat, the rear end of the luer connector is in threaded connection with the screw cap, the rear end of the screw cap is provided with a rear clamping block, the rear clamping block is clamped at the front part of the rubber plug structure, the rear end of the rubber plug structure is clamped in the installation cavity of the protection device, the front end of the steel needle seat is tightly pressed on the installation stop opening of the protection device, and the tail end of the steel needle is connected with the installation cavity of the steel needle seat, and the front end of the steel needle penetrates through the protection device, the rubber plug structure, the luer connector, the screw cap, the silicon tube and the sleeve tube are sequentially wrapped by the sleeve.
Further, the rear positioning end of the sleeve seat is provided with a first side convex ring, the front positioning end of the luer connector is provided with a second side convex ring, and the silica gel tube correspondingly covers the first side convex ring and the second side convex ring, so that two ends of the silica gel tube are respectively and hermetically connected with the sleeve seat and the luer connector.
Further, the rubber plug structure specifically comprises a rubber plug cover and a rubber plug, the rear end clamping block is arranged at the front end of the rubber plug cover to form a cavity, the rubber plug is positioned in the cavity, and the rear end of the rubber plug cover is clamped in an installation cavity of the protection device.
Further, the rubber stopper comprises an upper rubber stopper and a lower rubber stopper, the upper rubber stopper and the lower rubber stopper are respectively in a concave shape, the upper rubber stopper and the lower rubber stopper respectively comprise a notch, and the notch of the upper rubber stopper and the notch of the lower rubber stopper are oppositely arranged and placed in the cavity.
Further, the front end of the sleeve is provided with a small hole.
Further, the four small holes are arranged in a cross shape in orthographic projection in the axial direction of the sleeve.
Further, the protection device comprises a limiting groove arranged in the radial direction, a limiting block is arranged in the limiting groove, a spring is sleeved on the limiting block, one end of the spring abuts against the side wall of the limiting groove, and the other end of the spring abuts against the steel needle.
Further, the head of the steel needle is provided with a limiting part, and a limiting gasket matched with the limiting part is arranged in the protection device.
Further, an exhaust connector is inserted at the tail end of the steel needle seat.
Further, the front end of the exhaust joint is also provided with a ventilated membrane.
According to the disposable dialysis trocar, the sleeve and the sleeve seat are connected by using the characteristics of materials, and are welded together by heating, so that auxiliary connection is not required by any bonding auxiliary agent or metal parts; the sleeve seat, the silicone tube and the luer connector are connected by using good elasticity and wrapping force of the silicone tube for physical connection, and the silicone tube has excellent biocompatibility and is safer in use; in conclusion, the contact positions of the medical device and blood are all physical environment-friendly connection modes in use, no adhesive is needed, and the connection materials in use ensure the safety of human bodies.
In addition, the rubber plug of the disposable dialysis trocar is composed of the upper rubber plug and the lower rubber plug, wherein the notch of the upper rubber plug and the notch of the lower rubber plug are arranged in the cavity in a relative mode, when the steel needle is pulled out, the upper rubber plug is closed in time in the moment of pulling out the needle without a method, so that blood can be flushed out a bit, then the blood is blocked between the upper rubber plug and the lower rubber plug by the lower rubber plug, the flowing blood can be blocked between the two rubber plugs, the pollution of treatment environment is avoided, and meanwhile, the contact surface between the two upper rubber plugs and the lower rubber plug is smaller than that between the two upper rubber plugs and the lower rubber plug is in a hollow state, and the needle is easy and labor-saving relatively when the needle is pulled out; meanwhile, the front end of the sleeve is provided with the small holes, so that the problem that the blood flow is insufficient in the treatment process due to the fact that the head of the sleeve is stuck to the wall of a blood vessel can be avoided, and the small holes are arranged in a cross shape, so that no dead angle exists in multiple directions.
Drawings
FIG. 1 is a cross-sectional view of a disposable dialysis trocar of the present invention;
FIG. 2 is an enlarged schematic view of the head of the sleeve of the present invention;
FIG. 3 is a schematic cross-sectional view of the sleeve and plug construction after the steel needle is withdrawn;
fig. 4 is a schematic view of a section of a protective device protecting a steel tip portion.
Detailed Description
Referring to fig. 1 and 2, the disposable dialysis trocar of the invention comprises a steel needle 1, a sleeve 2, a sleeve seat 3, a silica gel tube 4, a luer connector 5, a screw cap 6, a rubber plug structure 7, a protection device 8 and a steel needle seat 9 which are sequentially arranged, wherein a rear flaring end 21 of the sleeve 2 is hot-melt with a front end socket 31 of the sleeve seat 3, a rear positioning end of the sleeve seat 3 and a front positioning end of the luer connector 5 are connected through the silica gel tube 4, two ends of the silica gel tube 4 are respectively tightly sleeved at the rear positioning end of the sleeve seat 3 and the front positioning end of the luer connector 5, the rear end of the luer connector 5 is in threaded connection with the screw cap 6, a rear end clamping block 61 is arranged at the rear end of the screw cap 6, in particular in the embodiment of the rubber plug structure, the rubber plug structure particularly comprises a rubber plug cover 71 and a rubber plug, the rear end clamping block 61 is arranged at the front end of the rubber plug cover 71 to form a cavity, the rubber plug is positioned in the cavity and comprises an upper rubber plug 72 and a lower 73, the upper 72 and a lower 73 are respectively in a concave shape and a lower 72 and a notch 72 is respectively arranged at the upper and lower 73 and a lower 73 is respectively opposite notch,
the rear end of the rubber plug cover 71 is clamped in the mounting cavity of the protection device 8, the front end of the steel needle seat 9 is tightly pressed against the mounting spigot 81 of the protection device 8, the tail end of the steel needle 1 is connected to the mounting cavity 91 of the steel needle seat, and the front end of the steel needle 1 sequentially penetrates through the protection device 8, the rubber plug structure 7, the screw cap 6, the luer connector 5, the silica gel tube 4 and the sleeve seat 3 and then is annularly wrapped by the sleeve 3.
Specifically, the rear positioning end of the sleeve holder 3 is provided with a first side convex ring 32, the front positioning end of the luer connector 5 is provided with a second side convex ring 51, the silicone tube 4 correspondingly covers the first side convex ring 32 and the second side convex ring 51, and two ends of the silicone tube 4 are respectively sealed with the sleeve holder 3 and the luer connector 5.
In addition, the front end of the sleeve 2 is provided with small holes 22, the small holes 22 are provided with four small holes 22, and the orthographic projection of the four small holes 22 in the axial direction of the sleeve is spaced by 90 degrees and is arranged in a cross shape.
In addition, the end of the steel needle seat 9 is inserted with an exhaust joint 92, and the front end of the exhaust joint 92 is also provided with a ventilated membrane 93.
The protection device 8 comprises a limiting groove 82 arranged along the radial direction, a limiting block 83 is arranged in the limiting groove 82, a spring 84 is sleeved on the limiting block 83, one end of the spring 84 abuts against the side wall of the limiting groove 83, and the other end of the spring 84 abuts against the steel needle 1.
The head of the steel needle 1 is provided with a limiting part 11, a limiting gasket 85 matched with the limiting part 11 is arranged in the protecting device 8, when the steel needle 1 is pulled out of the sleeve 2, the protecting device 8 is separated from the rubber plug cover 71, the steel needle 1 is pulled out of the sleeve, then the protecting device is used for protecting the head of the steel needle, the protecting device 8 and the steel needle seat 9 are separated, the limiting gasket 85 is clamped on the limiting part 11 of the steel needle along with the movement of the protecting device 8, meanwhile, due to the pulling-out of the steel needle, the limiting block 83 is sprung into the limiting groove under the action of the elastic force of the spring, the head of the steel needle can be prevented from being exposed out of the protecting device, and the separated two-part structure can be seen in fig. 3 and 4.
The traditional rubber plugs in the market are solid rubber, and the defect is that:
1. when the steel needle is pulled out, the contact surface between the steel needle and the rubber plug is too large, so that the steel needle can be pulled out only with relatively great force during operation;
2. because the product is used on dialysis patients, the internal pressure of the whole set of product is relatively high, so that at the moment of pulling out the steel needle, blood is reserved at the puncture point of the rubber plug, and the treatment environment is polluted.
The rubber plug of the disposable dialysis trocar is formed by arranging the upper rubber plug and the lower rubber plug in a cavity in a way that the notch of the upper rubber plug and the notch of the lower rubber plug are opposite to each other, when the steel needle is pulled out, the instant upper rubber plug of the needle is closed in time, so that blood can be flushed out a bit, then the blood is blocked between the upper rubber plug and the lower rubber plug by the lower rubber plug, the flowing blood can be blocked between the two rubber plugs, the pollution of treatment environment is avoided, and meanwhile, the contact surface between the two upper rubber plugs and the lower rubber plug is smaller than the contact surface of the steel needle, and the needle is easy and labor-saving relatively when the needle is pulled out;
the sleeve head of the traditional indwelling needle on the market is often stuck to the wall of a blood vessel to cause blockage, a passage is not smooth, and medical staff is required to readjust the angle of the indwelling needle.
According to the disposable dialysis trocar, the sleeve and the sleeve seat are connected by using the characteristics of materials, and are welded together by heating, so that auxiliary connection is not required by any bonding auxiliary agent or metal parts; the sleeve seat, the silicone tube and the luer connector are connected by using good elasticity and wrapping force of the silicone tube for physical connection, and the silicone tube has excellent biocompatibility and is safer in use; in conclusion, the contact positions of the medical device and blood are all physical environment-friendly connection modes in use, no adhesive is needed, and the connection materials in use ensure the safety of human bodies.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (8)
1. A disposable dialysis trocar, characterized in that: the device comprises a steel needle, a sleeve seat, a silicone tube, a luer connector, a screw cap, a rubber plug structure, a protection device and a steel needle seat, wherein the sleeve, the sleeve seat, the silicone tube, the luer connector, the screw cap, the rubber plug structure, the protection device and the steel needle seat are sequentially arranged;
the rubber plug structure specifically comprises a rubber plug cover and a rubber plug, wherein the rear end clamping block is arranged at the front end of the rubber plug cover to form a cavity, the rubber plug is positioned in the cavity, and the rear end of the rubber plug cover is clamped in an installation cavity of the protection device;
the rubber plug comprises an upper rubber plug and a lower rubber plug, the upper rubber plug and the lower rubber plug are respectively in a concave shape, the upper rubber plug and the lower rubber plug respectively comprise a notch, and the notch of the upper rubber plug and the notch of the lower rubber plug are oppositely arranged and placed in the cavity.
2. The disposable dialysis trocar of claim 1, wherein: the rear positioning end of the sleeve seat is provided with a first side convex ring, the front positioning end of the luer connector is provided with a second side convex ring, and the silica gel tube correspondingly covers the first side convex ring and the second side convex ring, so that two ends of the silica gel tube are respectively and hermetically connected with the sleeve seat and the luer connector.
3. The disposable dialysis trocar of claim 1, wherein: the front end of the sleeve is provided with a small hole.
4. A disposable dialysis trocar as claimed in claim 3, wherein: the small holes are arranged in a cross shape, and orthographic projections of the four small holes in the axial direction of the sleeve are arranged in a cross shape.
5. The disposable dialysis trocar of claim 1, wherein: the protection device comprises a limiting groove which is radially arranged, a limiting block is arranged in the limiting groove, a spring is sleeved on the limiting block, one end of the spring abuts against the side wall of the limiting groove, and the other end of the spring abuts against the steel needle.
6. The disposable dialysis trocar of claim 1, wherein: the head of the steel needle is provided with a limiting part, and a limiting gasket matched with the limiting part is arranged in the protection device.
7. The disposable dialysis trocar of claim 1, wherein: and an exhaust connector is inserted at the tail end of the steel needle seat.
8. The disposable dialysis trocar of claim 7, wherein: the front end of the exhaust joint is also provided with a ventilated membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910495109.XA CN110051898B (en) | 2019-06-10 | 2019-06-10 | Disposable trocar for dialysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910495109.XA CN110051898B (en) | 2019-06-10 | 2019-06-10 | Disposable trocar for dialysis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110051898A CN110051898A (en) | 2019-07-26 |
| CN110051898B true CN110051898B (en) | 2024-01-26 |
Family
ID=67325809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910495109.XA Active CN110051898B (en) | 2019-06-10 | 2019-06-10 | Disposable trocar for dialysis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110051898B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4412548A (en) * | 1981-07-30 | 1983-11-01 | Becton Dickinson And Company | Multiple sample needle assembly |
| US5810780A (en) * | 1996-05-10 | 1998-09-22 | Becton Dickinson And Company | Multiple cross section needle and elastic plug assembly for a medical device |
| CN101239217A (en) * | 2007-08-10 | 2008-08-13 | 张亚根 | Safety type artery and vein indwelling needle with needleless closed positive pressure interface |
| CN101879339A (en) * | 2010-07-12 | 2010-11-10 | 上海康德莱企业发展集团医疗器械有限公司 | Needleless dosing positive pressure connector |
| WO2014019189A1 (en) * | 2012-08-02 | 2014-02-06 | Zhang Jianming | Vacuum blood collector with indwelling catheter |
| CN104146748A (en) * | 2014-07-16 | 2014-11-19 | 浙江大学 | Disposable straight internal fistula puncturing trocar |
| JP2015080707A (en) * | 2013-10-24 | 2015-04-27 | 株式会社トップ | Indwelling needle |
| CN204723514U (en) * | 2015-05-22 | 2015-10-28 | 南通大学附属医院 | A kind of remaining needle fixing device |
| CN106110435A (en) * | 2016-06-22 | 2016-11-16 | 南方医科大学南方医院 | A kind of safety trocar |
| CN109045401A (en) * | 2018-10-10 | 2018-12-21 | 苏州九龙医院有限公司 | A kind of internal arteriovenous fistula cannula needle |
| CN208927262U (en) * | 2017-11-13 | 2019-06-04 | 端源医疗科技无锡有限公司 | A kind of full protection bottle plug puncture unit |
| CN210812961U (en) * | 2019-06-10 | 2020-06-23 | 端源医疗科技无锡有限公司 | Disposable trocar for dialysis |
-
2019
- 2019-06-10 CN CN201910495109.XA patent/CN110051898B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4412548A (en) * | 1981-07-30 | 1983-11-01 | Becton Dickinson And Company | Multiple sample needle assembly |
| US5810780A (en) * | 1996-05-10 | 1998-09-22 | Becton Dickinson And Company | Multiple cross section needle and elastic plug assembly for a medical device |
| CN101239217A (en) * | 2007-08-10 | 2008-08-13 | 张亚根 | Safety type artery and vein indwelling needle with needleless closed positive pressure interface |
| CN101879339A (en) * | 2010-07-12 | 2010-11-10 | 上海康德莱企业发展集团医疗器械有限公司 | Needleless dosing positive pressure connector |
| WO2014019189A1 (en) * | 2012-08-02 | 2014-02-06 | Zhang Jianming | Vacuum blood collector with indwelling catheter |
| JP2015080707A (en) * | 2013-10-24 | 2015-04-27 | 株式会社トップ | Indwelling needle |
| CN104146748A (en) * | 2014-07-16 | 2014-11-19 | 浙江大学 | Disposable straight internal fistula puncturing trocar |
| CN204723514U (en) * | 2015-05-22 | 2015-10-28 | 南通大学附属医院 | A kind of remaining needle fixing device |
| CN106110435A (en) * | 2016-06-22 | 2016-11-16 | 南方医科大学南方医院 | A kind of safety trocar |
| CN208927262U (en) * | 2017-11-13 | 2019-06-04 | 端源医疗科技无锡有限公司 | A kind of full protection bottle plug puncture unit |
| CN109045401A (en) * | 2018-10-10 | 2018-12-21 | 苏州九龙医院有限公司 | A kind of internal arteriovenous fistula cannula needle |
| CN210812961U (en) * | 2019-06-10 | 2020-06-23 | 端源医疗科技无锡有限公司 | Disposable trocar for dialysis |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110051898A (en) | 2019-07-26 |
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