CN102327143A - Disposable internal fistula puncture trocar - Google Patents

Disposable internal fistula puncture trocar Download PDF

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Publication number
CN102327143A
CN102327143A CN201110292892A CN201110292892A CN102327143A CN 102327143 A CN102327143 A CN 102327143A CN 201110292892 A CN201110292892 A CN 201110292892A CN 201110292892 A CN201110292892 A CN 201110292892A CN 102327143 A CN102327143 A CN 102327143A
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trocar
internal fistula
puncture
draw point
seat
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CN201110292892A
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CN102327143B (en
Inventor
袁静
陈江华
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Zhejiang University ZJU
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Zhejiang University ZJU
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Abstract

The invention provides a disposable internal fistula puncture trocar, which consists of a hollow puncture steel needle and a sleeve, wherein the head end of the sleeve is a soft needle tube, the soft needle tube is connected with a hard seat of the trocar, a tee-joint port seat is connected with a hose, the side end of the tee-joint port seat is connected with a soft catheter which is provided with a screw type port and is sleeved with a hemostatic clip, the tail end of the tee-joint port seat is connected with a rubber plug, the head end of the sleeve is also provided with a movable needle sheath cover, and the puncture steel needle is fixed with a syringe joint in a injection molding way. The invention provides the safe and comfortable internal fistula puncture trocar, so the problems of easily-caused internal fistula vessel swelling and bad comfort level of patients in the original disposable internal fistula puncture trocar (steel needle) are solved, the service lives of the arteriovenous internal fistulas of dialysis patients are prolonged, the nursing process is optimized, and the best effect of appliances can be realized after the use. The sleeve can prevent cross infection, and the trauma is small. The disposable internal fistula puncture trocar has reasonable design, a simple structure, convenience in use, easiness in operation, safety and reliability.

Description

Disposable internal fistula paracentesis trocar
Technical field
The invention belongs to medical apparatus and instruments, relate to a kind of disposable internal fistula paracentesis trocar.Be that a kind of hemodialysis patients that is used for implements to set up before the hemodialysis instrument that patient's vascular access carries out the internal fistula puncture.
Background technology
Hemodialysis is one of main kidney replacement therapy method of renal failure patient.When carrying out hemodialysis, the doctor at first sets up patient's vascular access, will dash good dialyser and disposable blood vessel then in advance and be connected to the patient's blood vessel path, sets up extracorporeal circulation and begins hemodialysis.
Original disposable internal fistula puncture needle mainly by: draw point and plastic tube connect to form.With normal saline the internal fistula puncture needle is dashed in advance earlier before the puncture.Artery and vein and fixing then punctures respectively.
The defective that said structure exists is: when 1, using original disposable internal fistula puncture needle during puncture, wear out blood vessel easily and cause puncture failure.2, hemodialysis patients will move a lower arms unavoidably in the 4-5 that carries out hemodialysis hour, very easily caused being punctured blood vessel by sharp draw point and caused local swelling and the subcutaneous hyperemia of large tracts of land.3, draw point hardness Da Yi causes oozing of blood.4, the steel syringe needle is prone to touch blood vessel wall and causes the artery blood flow sucking-off not smooth.5, original internal fistula puncture needle is difficult for fixing, and puncture needle slippage incident takes place easily.6, influence the service life of patient's artery and vein internal fistula.7, the patient comfort is poor.
Summary of the invention
The purpose of this invention is to provide a kind of disposable internal fistula paracentesis trocar, be made up of puncture draw point and sleeve pipe, the puncture draw point is hollow, and overall diameter is 16G (1.6mm) or 15G (1.7mm), and tail end is draw point joint and draw point connector cover; The sleeve pipe head end is that a segment length is that soft needle tubing is used in the indwelling of the high texture with certain crushing resistance of 26mm, is provided with 4 symmetric apertures at soft needle tubing head end, soft needle tubing tail end adapter sleeve bobbin hard seat; Trocar hard seat connects flexible pipe, the head end of hose connection three-way interface seat, and the logical tail end of the side of three-way interface seat connects flexible catheter; The flexible catheter tail end is provided with spiral port; And be with the conduit medicated cap, and on flexible catheter, being with hemostatic clamp, the straight-through tail end of three-way interface seat connects rubber closure; The puncture draw point penetrates rubber closure and gets into sleeve pipe, also is provided with detachable needle sheath lid at the sleeve pipe head end.The draw point connector cover can take off, and can connect the syringe blood drawing in the time of necessary and use.
Soft needle tubing is connected with trocar hard seat through fluid sealant, and trocar hard seat connects the transparent silica gel flexible pipe through fluid sealant, and flexible pipe connects the three-way interface seat through fluid sealant, and hollow puncture draw point and syringe joint adopt injection moulding to fix.
Disposable internal fistula paracentesis trocar provided by the invention is a kind of safe, comfortable internal fistula paracentesis trocar; Mainly solve the problem that is prone to cause internal fistula swollen blood vessels and patient comfort's difference that original disposable internal fistula puncture needle (draw point) exists, thereby prolong the service life of the artery and vein internal fistula of dialysis patient.This internal fistula paracentesis trocar can be optimized care program, can make apparatus reach optimum efficiency after the use.(1) this trocar has aperture on the flexible catheter top, can in the shortest time, see blood back rapidly, helps to judge early that being punctured with denys in the intravasation; Owing to adopted flexible catheter, and used needle point to return the method for sending pipe in the flexible catheter again, thereby avoided puncture excessive (puncturing blood vessel) and the puncture failure of appearance, the raising puncture success rate.(2) flexible catheter of the present invention design is floating state in blood vessel, has reduced the compressing to blood vessel, thereby has avoided obstructed to the bloody path that the compressing of blood vessel causes because of conventional steel, has improved the flow and the quality of hemodialysis greatly.(3) because flexible catheter is floating state in blood vessel, avoided conventional steel to the long-time stimulation of blood vessel and possible tunica intima damage, reduced the incidence rate of phlebitis and thrombosis, reduce the generation of complication.(4) because draw point hardness is big and the histocompatibility difference is prone to cause oozing of blood, and the internal fistula paracentesis trocar has adopted flexible catheter, thereby has avoided occurring oozing of blood.(6) the internal fistula paracentesis trocar easy fixation that provides avoids taking place puncture needle slippage incident.(7) service life of prolongation internal fistula blood vessel.The internal fistula blood vessel is vital to dialysis patient, must protect to full capacity.Owing to adopted the internal fistula paracentesis trocar of band flexible catheter, significantly reduced the generation of various complication, thereby prolonged the service life of patient's internal fistula blood vessel to greatest extent.(8) improved patient's comfort level greatly.In dialysis procedure, patient's a hands must be motionless at 4-5 hour internal fixation in the past.Careless slightly or mobilely just possibly puncture blood vessel, cause the subcutaneous hyperemia of hemodialysis interruption and swelling and large tracts of land.Adopted the internal fistula puncture needle of band flexible catheter, had only flexible catheter to be trapped in the blood vessel, thereby avoided puncturing blood vessel and guaranteed carrying out smoothly of hemodialysis.Patient's hands also can suitably move, and is not only safe but also comfortable.Sleeve pipe of the present invention is disposable use, prevents cross infection, and wound is little.The present invention is reasonable in design, and is simple in structure, easy to use, and easy operating is safe and reliable, realizes the bottom line wound, and less patient suffering is little, meets the requirement of modern medicine progress.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is puncture draw point 1 sketch map.
The specific embodiment
The present invention combines accompanying drawing and embodiment to be further described.
Embodiment 1
Referring to Fig. 1 and Fig. 2, the present invention provides a kind of disposable internal fistula paracentesis trocar, is made up of with sleeve pipe 2 puncture draw point 1, and puncture draw point 1 is hollow, and overall diameter is 16G (1.6mm) or 15G (1.7mm), and tail end is draw point joint 13 and draw point connector cover 14; Sleeve pipe 2 head ends be a segment length be the indwelling of high texture of 26mm with certain crushing resistance with soft needle tubing 3, be provided with 4 symmetric apertures 15 at soft needle tubing 3 head ends, soft needle tubing 3 tail end adapter sleeve bobbin hard seats 4; Trocar hard seat 4 connects flexible pipe 5, and flexible pipe 5 connects the head end of three-way interface seat 6, and the logical tail end of the side of three-way interface seat 6 connects flexible catheter 7; Flexible catheter 7 tail ends are provided with spiral port 9; And be with conduit medicated cap 10, and on flexible catheter 7, being with hemostatic clamp 8, the straight-through tail end of three-way interface seat 6 connects rubber closure 12; Puncture draw point 1 penetrates rubber closure 12 and gets into sleeve pipe 2, also is provided with detachable needle sheath lid 11 at sleeve pipe 2 head ends.Draw point connector cover 14 can take off, and can connect the syringe blood drawing in the time of necessary and use.
Soft needle tubing 3 is connected with trocar hard seat 4 through fluid sealant, and trocar hard seat 4 connects transparent silica gel flexible pipe 5 through fluid sealant, and flexible pipe 5 connects three-way interface seat 6 through fluid sealant, and hollow puncture draw point 1 adopts injection moulding to fix with syringe joint 13.
The trocar of the present invention is the entire package sterilization, and the draw point 1 that wherein punctures inserts in the sleeve pipe 2.
Embodiment 2
Use disposable internal fistula paracentesis trocar of the present invention, be used for hemodialysis patients puncture internal fistula blood vessel and set up vascular access.Before hemodialysis treatment began, the nurse must wash one's hands and wear glove; From packing, take out internal fistula paracentesis trocar, preoperation inspection product integrity; , dash to finish in advance hemostatic clamp 8 is clamped in advance towards disposable internal fistula paracentesis trocar (then needn't dash in advance) with normal saline or rare heparin saline, choose blood vessel preparation point of puncture if will draw blood; Hold trocar hard seat 4 with thumb and forefinger, rotation is become flexible sheath 11 and is taken off with the outside mode of straight line, holds trocar hard seat 4 puncture vessels; Observe blood back and flow to soft needle tubing 3, the angle of loweing is sent into soft needle tubing 3 and puncture draw point 1; After the tip that guarantees soft needle tubing 3 is positioned at blood vessel, stablize soft needle tubing 3, pull out a little puncture draw point 1 gently; Again soft needle tubing 3 and puncture draw point 1 are sent in the blood vessel; (noting: be sure not needle tubing is inserted flexible pipe again, otherwise possibly cause flexible pipe damage or fracture) stablized trocar hard seat 4 and extracted puncture draw point 1 out; The draw point 1 that will puncture is put into sharp instrument box, according to rule of operation with aseptic pad pasting or immobilization with adhesive tape internal fistula paracentesis trocar.Because hemodialysis must have enough blood flows, the side opening 15 on the flexible pipe helps to satisfy this requirement.

Claims (3)

1. a disposable internal fistula paracentesis trocar is characterized in that, is made up of puncture draw point (1) and sleeve pipe (2); Puncture draw point (1) is hollow, and overall diameter is 1.6mm or 1.7mm, and tail end is draw point joint (13) and draw point connector cover (14); Sleeve pipe (2) head end is that a segment length is the soft needle tubing (3) of 26mm, is provided with 4 symmetric apertures (15) at soft needle tubing (3) head end, soft needle tubing (3) tail end adapter sleeve bobbin hard seat (4); Trocar hard seat (4) connects flexible pipe (5), and flexible pipe (5) connects the head end of three-way interface seat (6), and the logical tail end of the side of three-way interface seat (6) connects flexible catheter (7); Flexible catheter (7) tail end is provided with spiral port (9); And be with conduit medicated cap (10), and on flexible catheter (7), being with hemostatic clamp (8), the straight-through tail end of three-way interface seat (6) connects rubber closure (12); Puncture draw point (1) penetrates rubber closure (12) and gets into sleeve pipe (2), is provided with detachable needle sheath lid (11) at sleeve pipe (2) head end.
2. a kind of disposable internal fistula paracentesis trocar according to claim 1; It is characterized in that; Soft needle tubing (3) is connected with trocar hard seat (4) through fluid sealant; Trocar hard seat (4) connects transparent silica gel flexible pipe (5) through fluid sealant, and flexible pipe (5) connects three-way interface seat (6) through fluid sealant.
3. a kind of disposable internal fistula paracentesis trocar according to claim 1 is characterized in that, puncture draw point (1) adopts injection moulding to fix with syringe joint (13).
CN 201110292892 2011-10-06 2011-10-06 Disposable internal fistula puncture trocar Active CN102327143B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201110292892 CN102327143B (en) 2011-10-06 2011-10-06 Disposable internal fistula puncture trocar

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Application Number Priority Date Filing Date Title
CN 201110292892 CN102327143B (en) 2011-10-06 2011-10-06 Disposable internal fistula puncture trocar

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CN102327143A true CN102327143A (en) 2012-01-25
CN102327143B CN102327143B (en) 2013-01-02

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103272322A (en) * 2013-06-01 2013-09-04 李淑秀 Hemodialysis venipuncture tube
CN104146748A (en) * 2014-07-16 2014-11-19 浙江大学 Disposable straight internal fistula puncturing trocar
CN108113732A (en) * 2018-01-22 2018-06-05 北京万特福医疗器械有限公司 Pin bores integrated intracranial puncture and drainage device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3442663A1 (en) * 1984-11-23 1986-05-28 JOSTRA Medizintechnik GmbH & Co KG, 7450 Hechingen Fistula catheter for haemodialysis
CN2891985Y (en) * 2006-02-20 2007-04-25 王怡波 Abdominocentesis lavation needle
CN101461733A (en) * 2008-12-31 2009-06-24 龙秀玲 Trocars
CN101658700A (en) * 2009-07-30 2010-03-03 陈永曦 Open indwelling needle with protective sleeve
CN202263035U (en) * 2011-10-06 2012-06-06 浙江大学 Disposal internal fistula puncturing trochar

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3442663A1 (en) * 1984-11-23 1986-05-28 JOSTRA Medizintechnik GmbH & Co KG, 7450 Hechingen Fistula catheter for haemodialysis
CN2891985Y (en) * 2006-02-20 2007-04-25 王怡波 Abdominocentesis lavation needle
CN101461733A (en) * 2008-12-31 2009-06-24 龙秀玲 Trocars
CN101658700A (en) * 2009-07-30 2010-03-03 陈永曦 Open indwelling needle with protective sleeve
CN202263035U (en) * 2011-10-06 2012-06-06 浙江大学 Disposal internal fistula puncturing trochar

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103272322A (en) * 2013-06-01 2013-09-04 李淑秀 Hemodialysis venipuncture tube
CN104146748A (en) * 2014-07-16 2014-11-19 浙江大学 Disposable straight internal fistula puncturing trocar
CN108113732A (en) * 2018-01-22 2018-06-05 北京万特福医疗器械有限公司 Pin bores integrated intracranial puncture and drainage device
CN108113732B (en) * 2018-01-22 2020-09-18 北京万特福医疗器械有限公司 Needle and drill integrated intracranial hematoma puncture drainage device

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