CN104146748A - Disposable straight internal fistula puncturing trocar - Google Patents

Disposable straight internal fistula puncturing trocar Download PDF

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Publication number
CN104146748A
CN104146748A CN201410338369.3A CN201410338369A CN104146748A CN 104146748 A CN104146748 A CN 104146748A CN 201410338369 A CN201410338369 A CN 201410338369A CN 104146748 A CN104146748 A CN 104146748A
Authority
CN
China
Prior art keywords
trocar
internal fistula
conduit
needle tubing
cap
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410338369.3A
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Chinese (zh)
Inventor
袁静
陈江华
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Zhejiang University ZJU
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Zhejiang University ZJU
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhejiang University ZJU filed Critical Zhejiang University ZJU
Priority to CN201410338369.3A priority Critical patent/CN104146748A/en
Publication of CN104146748A publication Critical patent/CN104146748A/en
Pending legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34Trocars; Puncturing needles
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M1/00Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/14Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34Trocars; Puncturing needles
    • A61B17/3417Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
    • A61B2017/3454Details of tips

Abstract

The invention provides a disposable straight internal fistula puncturing trocar. The disposable straight internal fistula puncturing trocar consists of a hollow puncturing steel needle, a small hole, an indwelling flexible needle tube, a trocar needle hard seat, a silica gel hose, a hemostasis clamp, a hard catheter, a catheter cap, a needle barrel joint, a conventional catheter cap and a needle head jacket cover. The inner surface of the whole trocar is smooth; and a catheter main body can be maintained in a fixed component by a meshing component arranged between the catheter main body and the fixed component, so that a catheter can continuously or persistently move forwards through a through hole of the fixed component, and is fixed at a perfect position. The disposable straight internal fistula puncturing trocar is disposable, simple in structure, reasonable in design, convenient to use and easy to operate, and is safe and reliable; cross infection is prevented; wound is small; minimum wound can be realized; pain of patients is small; and requirements on modern medicine development are met. The problems that by the existing disposable internal fistula puncturing trocar, swelling on internal fistula blood vessels is easily caused, and the comfort level of the patients is low are solved, so that the service lives of artery internal fistulas and vein internal fistulas of dialysis patients are prolonged.

Description

Disposable straight type internal fistula puncturing trochar
Technical field
The invention belongs to medical mechanical domain, relate to a kind of disposable straight type internal fistula puncturing trochar.It is a kind of instrument that carries out internal fistula puncture for setting up patient's vascular access before hemodialysis patients enforcement hemodialysis.
Background technology
Hemodialysis is one of main kidney replacement therapy method of patients with renal failure.While carrying out hemodialysis, doctor's model patient's vascular access, the vascular access that then pre-made dialyser and disposable blood vessel is connected to patient, sets up extracorporeal circulation and starts hemodialysis.
Original traditional disposable internal fistula puncture needle mainly by: draw point and plastic tube connect to form.Before puncture, first with normal saline, internal fistula puncture needle is rushed in advance.Then artery and vein being fixed punctures respectively.
The defect that said structure exists is: while using original disposable internal fistula puncture needle while 1, puncturing, easily wear out blood vessel and cause puncture failure.2, hemodialysis patients, in carrying out 4-5 hour of hemodialysis, will move arm unavoidably, very easily causes being punctured blood vessel by sharp draw point and causes under local swelling and Large Area Skin congested.3, draw point hardness great Yi causes oozing of blood.4, steel syringe needle easily touch blood vessel wall and causes artery blood flow sucking-off not smooth.5, original internal fistula puncture needle is difficult for fixing, and puncture needle slippage event easily occurs.6, affect the service life of patient's artery and vein internal fistula.7, patient comfort is poor.
Summary of the invention
The invention provides a kind of disposable straight type internal fistula puncturing trochar, by hollow puncture draw point 1, aperture 2, keep somewhere soft needle tubing 3, trocar hard seat 4, silica gel hose 5, hemostatic clamp 6, fibre conduit 7, conduit cap 8, syringe joint 9, conventional conduit cap 10, needle guard lid 11 forms, hollow puncture draw point 1 needle tubing diameter is 16G (1.6mm) or 17G(1.4mm), aperture 2 symmetries are opened in soft needle tubing 3 head ends, keep somewhere soft needle tubing 3 length and be about 25mm, keeping somewhere soft needle tubing 3 adopts fluid sealant to be connected with trocar hard seat 4, transparent silica gel flexible pipe 5 adopts fluid sealant to be connected with trocar hard seat 4 with fibre conduit 7, fibre conduit 7 is connected with conduit cap 8, hollow puncture draw point 1 adopts injection moulding to fix with syringe joint 9, fibre conduit 7 is for being with spiral port, conduit cap 8 is conduit cap or calparine cap with cork, needle guard lid 11 is enclosed within to be kept somewhere outside soft needle tubing 3, syringe joint 9 is connected with conventional conduit cap 10.Keep somewhere the material that soft needle tubing 3 adopts the high texture of crushing resistance.
Trocar Assembly comprises: comprise sleeve pipe and the pin heart, sleeve pipe comprises: body by foremost enter endovascular flexible catheter → base → soft silica gel conduit and clip → with the fibre conduit of spiral port → form with the conduit cap of cork, closely connect with each other, and the inner face of the whole trocar is smooth.Casing main body is suitable for being remained in fixed part to allow sleeve pipe to travel forward continuously or constantly by the through hole of fixed part by the meshing part between itself and fixed part, and fixes this sleeve pipe a desirable position.Pin pericardium is drawn together needle point, needle body, is positioned at needle handle and the conduit cap of needle body afterbody.The disposable use of the present invention, prevents cross infection.Wound is little, simple in structure, easy to use, and easy operating is safe and reliable, realizes bottom line wound, and patient's misery is little, meets the requirement of modern medicine progress.Mainly solve the problem that easily causes internal fistula swollen blood vessels and patient comfort's difference that original disposable internal fistula puncturing trochar exists, thereby extend the service life of the artery and vein internal fistula of dialysis patient.
The invention has the beneficial effects as follows:
1. improve puncture success rate.Flexible catheter has aperture on top, can within the shortest time, see rapidly blood back, contributes to judge early to puncture whether in intravasation; Owing to having adopted flexible catheter, and use needle point to return the method for sending again pipe in flexible catheter, thereby avoided puncture excessive (puncturing blood vessel) and the puncture failure of appearance.
2. more excellent flow.Flexible catheter is floating state in blood vessel, has reduced the compressing to blood vessel, thereby has avoided the bloody path that causes for the compressing of blood vessel because of conventional steel obstructed, has greatly improved flow and the quality of hemodialysis.
3. reduce the generation of complication.Because flexible catheter is floating state in blood vessel, avoided conventional steel for the long-time stimulation of blood vessel and possible tunica intima damage, reduced the incidence rate of phlebitis and thrombosis.
4. avoid oozing of blood.Because draw point hardness is large and histocompatibility is poor, easily cause oozing of blood, and internal fistula puncturing trochar adopts flexible catheter, thereby avoided occurring oozing of blood.
5. internal fistula puncturing trochar is easily fixing, avoids occurring puncture needle slippage event.
6. extend the service life of internal fistula blood vessel.Internal fistula blood vessel is vital to dialysis patient, must protect to full capacity.Due to the internal fistula puncturing trochar having adopted with flexible catheter, greatly reduced the generation of various complication, thereby extended to greatest extent the service life of patient's internal fistula blood vessel.
7. greatly improved patient's comfort level.In dialysis procedure, patient's a hands must maintain static in 4-5 hour in the past.Careless slightly or movement just may puncture blood vessel, causes under hemodialysis interruption and swelling and Large Area Skin congested.Adopted the internal fistula puncture needle with flexible catheter, only had flexible catheter to be trapped in blood vessel, thereby avoided puncturing blood vessel and guaranteed carrying out smoothly of hemodialysis.Patient's hands also can suitably move, not only safe but also comfortable.
8. the production cost of straight type internal fistula puncturing trochar provided by the invention and technical difficulty are all lower than the disposable internal fistula puncturing trochar of patent No. ZL 201110292892.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the hollow puncture draw point schematic diagram of invention.
The specific embodiment
The present invention is further described in conjunction with the accompanying drawings and embodiments.
embodiment 1
Referring to Fig. 1, Fig. 2, the invention provides a kind of disposable straight type internal fistula puncturing trochar, by hollow puncture draw point 1, aperture 2, keep somewhere soft needle tubing 3, trocar hard seat 4, silica gel hose 5, hemostatic clamp 6, fibre conduit 7, conduit cap 8, syringe joint 9, conventional conduit cap 10, needle guard lid 11 forms, hollow puncture draw point 1 needle tubing diameter is 16G (1.6mm) or 17G(1.4mm), aperture 2 symmetries are opened in soft needle tubing 3 head ends, keep somewhere soft needle tubing 3 length and be about 25mm, keeping somewhere soft needle tubing 3 adopts fluid sealant to be connected with trocar hard seat 4, transparent silica gel flexible pipe 5 adopts fluid sealant to be connected with trocar hard seat 4 with fibre conduit 7, fibre conduit 7 is connected with conduit cap 8, hollow puncture draw point 1 adopts injection moulding to fix with syringe joint 9, fibre conduit 7 is for being with spiral port, conduit cap 8 is conduit cap or calparine cap with cork, needle guard lid 11 is enclosed within to be kept somewhere outside soft needle tubing 3, syringe joint 9 is connected with conventional conduit cap 10.Keep somewhere the material that soft needle tubing 3 adopts the high texture of crushing resistance.
Trocar Assembly comprises: comprise sleeve pipe and the pin heart, sleeve pipe comprises: body by foremost enter endovascular flexible catheter → base → soft silica gel conduit and clip → with the fibre conduit of spiral port → form with the conduit cap of cork, closely connect with each other, and the inner face of the whole trocar is smooth.Casing main body is suitable for being remained in fixed part to allow sleeve pipe to travel forward continuously or constantly by the through hole of fixed part by the meshing part between itself and fixed part, and fixes this sleeve pipe a desirable position.Pin pericardium is drawn together needle point, needle body, is positioned at needle handle and the conduit cap of needle body afterbody.The disposable use of the present invention, prevents cross infection.Wound is little, simple in structure, easy to use, and easy operating is safe and reliable, realizes bottom line wound, and patient's misery is little, meets the requirement of modern medicine progress.Mainly solve the problem that easily causes internal fistula swollen blood vessels and patient comfort's difference that original disposable internal fistula puncturing trochar exists, thereby extend the service life of the artery and vein internal fistula of dialysis patient.
Embodiment 2
For hemodialysis patients puncture internal fistula blood vessel, set up vascular access.Before hemodialysis treatment starts, nurse must wash one's hands and wear glove; From packing, take out internal fistula puncturing trochar, the sealing of preoperation inspection product integrity and outer package; With normal saline or rare heparin saline, rush in advance disposable internal fistula paracentesis trocar (needn't rush in advance and connect needle tubing if will draw blood); Choose blood vessel and prepare point of puncture; With thumb and forefinger, hold trocar hard seat 4, the loosening needle guard lid 11 of rotation also takes off in the outside mode of straight line; Hold trocar hard seat puncture vessel, observe blood back and flow to soft needle tubing 3, the angle of loweing, send into and keep somewhere soft needle tubing 3 and hollow puncture draw point 1, guarantee that flexible pipe tip is positioned at after blood vessel, stablize soft needle tubing, pull out gently a little hollow puncture draw point 1, the soft needle tubing 3 of indwelling and hollow puncture draw point 1 are sent in blood vessel.(note: be sure not the needle tubing of hollow puncture draw point 1 to reinsert and keep somewhere soft needle tubing 3, otherwise may cause soft needle tubing damage or fracture), stablize trocar hard seat 4, and extract hollow puncture draw point 1 out, hollow puncture draw point is put to 1 and enter in sharp instrument box, and close silica gel hose 5 with hemostatic clamp 6 folders on flexible pipe.Then according to aseptic pad pasting or immobilization with adhesive tape internal fistula puncturing trochar for rule of operation.

Claims (2)

1. a disposable straight type internal fistula puncturing trochar, it is characterized in that, by hollow puncture draw point (1), aperture (2), keep somewhere soft needle tubing (3), trocar hard seat (4), silica gel hose (5), hemostatic clamp (6), fibre conduit (7), conduit cap (8), syringe joint (9), conventional conduit cap (10), needle guard lid (11) forms, hollow puncture draw point (1) needle tubing diameter is 16G or 17G, aperture (2) symmetry is opened in soft needle tubing (3) head end, keeping somewhere soft needle tubing (3) length is 25mm, keeping somewhere soft needle tubing (3) adopts fluid sealant to be connected with trocar hard seat (4), transparent silica gel flexible pipe (5) adopts fluid sealant to be connected with trocar hard seat (4) and fibre conduit (7), fibre conduit (7) is connected with conduit cap (8), hollow puncture draw point (1) adopts injection moulding to fix with syringe joint (9), fibre conduit (7) is for being with spiral port, conduit cap (8) is conduit cap or calparine cap with cork, needle guard lid (11) is enclosed within to be kept somewhere outside soft needle tubing (3), syringe joint (9) is connected with conventional conduit cap (10).
2. a kind of disposable straight type internal fistula puncturing trochar according to claim 1, is characterized in that, keeps somewhere the material that soft needle tubing (3) adopts the high texture of crushing resistance.
CN201410338369.3A 2014-07-16 2014-07-16 Disposable straight internal fistula puncturing trocar Pending CN104146748A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410338369.3A CN104146748A (en) 2014-07-16 2014-07-16 Disposable straight internal fistula puncturing trocar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410338369.3A CN104146748A (en) 2014-07-16 2014-07-16 Disposable straight internal fistula puncturing trocar

Publications (1)

Publication Number Publication Date
CN104146748A true CN104146748A (en) 2014-11-19

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105999512A (en) * 2016-06-22 2016-10-12 韩伟 Visual improved arterial-venous internal fistula thrombolysis device
CN106861019A (en) * 2017-03-31 2017-06-20 卞晓明 Skin fixator
CN108720908A (en) * 2018-08-23 2018-11-02 南通市第二人民医院 A kind of the Hemodialysis fistula puncture needle and application method of display level angle
CN110051898A (en) * 2019-06-10 2019-07-26 端源医疗科技无锡有限公司 Trochar is used in disposable dialysis
CN111905190A (en) * 2020-07-20 2020-11-10 吴向阳 Easy-to-operate large-inner-diameter triple trocar device and application

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101461733A (en) * 2008-12-31 2009-06-24 龙秀玲 Trocars
JP2010005359A (en) * 2008-04-02 2010-01-14 Takao Usui Puncture device
CN102327143A (en) * 2011-10-06 2012-01-25 浙江大学 Disposable internal fistula puncture trocar
CN203138628U (en) * 2013-01-30 2013-08-21 陈新河 Internal arteriovenous fistula puncture needle
CN204033446U (en) * 2014-07-16 2014-12-24 浙江大学 Disposable straight type internal fistula puncturing trochar

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010005359A (en) * 2008-04-02 2010-01-14 Takao Usui Puncture device
CN101461733A (en) * 2008-12-31 2009-06-24 龙秀玲 Trocars
CN102327143A (en) * 2011-10-06 2012-01-25 浙江大学 Disposable internal fistula puncture trocar
CN203138628U (en) * 2013-01-30 2013-08-21 陈新河 Internal arteriovenous fistula puncture needle
CN204033446U (en) * 2014-07-16 2014-12-24 浙江大学 Disposable straight type internal fistula puncturing trochar

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105999512A (en) * 2016-06-22 2016-10-12 韩伟 Visual improved arterial-venous internal fistula thrombolysis device
CN105999512B (en) * 2016-06-22 2023-02-21 厦门大学附属中山医院 Visible internal arteriovenous fistula thrombolysis device
CN106861019A (en) * 2017-03-31 2017-06-20 卞晓明 Skin fixator
CN108720908A (en) * 2018-08-23 2018-11-02 南通市第二人民医院 A kind of the Hemodialysis fistula puncture needle and application method of display level angle
CN110051898A (en) * 2019-06-10 2019-07-26 端源医疗科技无锡有限公司 Trochar is used in disposable dialysis
CN110051898B (en) * 2019-06-10 2024-01-26 端源医疗科技无锡有限公司 Disposable trocar for dialysis
CN111905190A (en) * 2020-07-20 2020-11-10 吴向阳 Easy-to-operate large-inner-diameter triple trocar device and application

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Application publication date: 20141119