CN103463691A - Venous indwelling needle for hemodialysis - Google Patents
Venous indwelling needle for hemodialysis Download PDFInfo
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- CN103463691A CN103463691A CN2013104648339A CN201310464833A CN103463691A CN 103463691 A CN103463691 A CN 103463691A CN 2013104648339 A CN2013104648339 A CN 2013104648339A CN 201310464833 A CN201310464833 A CN 201310464833A CN 103463691 A CN103463691 A CN 103463691A
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Abstract
The invention discloses a venous indwelling needle for hemodialysis. The venous indwelling needle for hemodialysis comprises a steel needle, a catheter, a catheter holder, a silica-gel flexible pipe, an artery blood leading end connector and a pipe stopper. Grooves with inverted hooks are evenly formed in the outer lateral side of the front end of the steel needle; an elastic clip is installed in the pipe stopper and is used for preventing the needle from being separated from the pipe stopper in the needle withdrawing process; a butterfly wing and a flow control clip are further arranged on the catheter holder and the silica-gel flexible pipe respectively. A safe and effective needling withdrawing mode is arranged, and the danger that patients or medical staff may be stabbed in the needling withdrawing process is avoided; because the clip is added to the silica-gel flexible pipe, inconvenience and potential danger caused by vessel forceps are omitted, and the venous indwelling needle for hemodialysis is more convenient and safer to use; because the butterfly wing capable of rotating freely is arranged , punching is facilitated and fixable area is increased; the needle is more firmly fixed through adhesive tape and doe not easily fall off and the defects that an existing venous indwelling needle for hemodialysis easily falls off are overcome.
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments, be specifically related to a kind of hemodialysis venous detaining needle.
Background technology
Uremic patient needs promoting the circulation of blood liquid dialysis treatment could save patient's life, carries out for a long time the needs of patients of hemodialysis and sets up artery-vein Inner fistula, and artery-vein Inner fistula is the life line of hemodialysis patient.Yet some patient causes the blood vessel condition poor because of the self-disease reason, can't set up artery-vein Inner fistula and artificial blood vessel internal fistula, even permanent catheter also can't be set up, and patient's life has been saved in the external jugular vein puncture, and the venous detaining needle used during the external jugular vein puncture plays an important role.
At present domestic most popular be hemodialysis venous detaining needle from Japanese import, this remaining needle has the advantages such as design is accurate, puncture is good, still still has following deficiency, as: there is fixing not firm problem, easily deviate from during the twisting of patient's cervical region, cause losing blood, cause dialysis to interrupt; Its silica gel hose part is too short, also inconvenient while before upper power traction blood, by vascular forceps, clamping this part, and vascular forceps is that certain weight metal object is arranged, easily venous detaining needle is used in the tractive dialysis, makes the pin displacement, even deviates from, more easily crush patient, increase patient's misery.Also have the deficiency that is not easy to control, the catheter block of this remaining needle is a pyramidal structure body, during use, need to firmly control.But when being the withdraw of the needle, topmost deficiency can cause syringe needle to expose from conduit, may prick patient or medical personnel's both hands, gently cause and sting the severely injured infection that causes, for this situation, medical personnel can only try one's best the withdraw of the needle slowly a bit to avoid syringe needle to expose rapidly at present, but dynamics also is difficult for grasping, and may bring very large danger to medical personnel in a word when syringe needle soon exposes.
Summary of the invention
The purpose of this invention is to provide a kind of hemodialysis venous detaining needle, to make up the deficiency of existing dialysis with venous detaining needle.
A kind of hemodialysis venous detaining needle, comprise remaining needle main body and puncture needle, described remaining needle main body comprises that the conduit, catheter block, silica gel hose, the tremulous pulse that connect successively draw blood end connector and pipe close, described puncture needle comprises that end is connected with the draw point of needle stand, and described draw point, through described remaining needle main body, is characterized in that:
The lateral surface of described draw point has three notches along its length successively in the position near needle point, described three notch uniform ring are around in the axis of draw point, angle between any two is 120 degree, and described notch is provided with barb near an end of needle point, and the other end is provided with inclined-plane;
Described pipe close comprises that upper surface has the pipe close seat of axial circular groove and the cylinder-shaped sleeve of hollow, described circular groove bottom centre has perforation, described sleeve pipe is installed in circular groove and by described resilient clip and is crimped on the circular groove bottom, this resilient clip breaks away from pipe close (8) for the needle section that stops draw point when the withdraw of the needle, thereby the modes such as this sleeve pipe can adopt and be threaded, flexible clamping, rotary clamping are fixed in circular groove and realize spacing to resilient clip making it to be unlikely to break away from the bottom of circular groove;
Described resilient clip comprises a pair of elastic U-shaped silk that has, and the top of two U-shaped silks is oppositely arranged, the spacing on top is less than the diameter of above-mentioned perforation, two ends of a U-shaped silk are connected with the end of another U-shaped silk via two long arc sections respectively, and match bottom long arc section and circular groove;
Lateral surface at the pipe close seat also is provided with gauge point, the summit conllinear of this gauge point and two long arc sections.While being used for assembling, when needs penetrate needle point from pipe close seat below, first needle point is gone to the medial surface (or its position, opposite) of the corresponding pipe close seat of gauge point, be unlikely to while then penetrating to be caught on by the U-shaped silk.
Above-mentioned pipe close seat is provided with a block in the bottom of its circular groove, be provided with the baffle plate that a length is greater than the arc of block width above block;
The middle part of one of them long arc section of above-mentioned resilient clip is jagged, and the width of this breach matches with the width of block.
The purpose of this structure is to be convenient to install, and at first the two ends of breach is propped up to the both sides of block during installation, and resilient clip just can not rotate in the circular groove bottom like this, and then the long arc section that will be positioned at opposite side gets final product bottom being pressed onto; The benefit that baffle plate is set is to be longer than breach because of the length of baffle plate, therefore can push down the resilient clip of breach two side positions, only the long arc section of opposite side need be got final product toward pressing down during installation, and not worry that the long arc section on its opposite may stretch tight out.
Above-mentioned inside pipe casing is provided with a middle part and has baffle ring through hole, radially and sleeve pipe is divided into to upper and lower two chambers, is plugged with a tube core in upper chamber, and described tube core is silica gel material, and the tube core middle part also has a hole connected with above-mentioned through hole.
The effect of this tube core is to play the effect of stablizing the withdraw of the needle and inserting needle, especially when the withdraw of the needle, because the tube core of silica gel has certain frictional force, can play the effect that reduces withdraw of the needle speed.
The aperture, upper end in the hole at above-mentioned tube core middle part is less than the draw point diameter, and the aperture, lower end is more than or equal to the draw point diameter.
When the benefit of this design is the withdraw of the needle, because the upper end bore is less than the draw point diameter, the upper end that will certainly make the barb on the draw point notch hook tube core, play the effect that reduces withdraw of the needle speed or stop the withdraw of the needle, thereby reach the purpose that syringe needle can not break away from from pipe close.
Described silica gel hose is provided with flow control clamp.
Also be provided with a butterfly wing on above-mentioned catheter block, the described butterfly wing comprises a pair of fin be symmetricly set on catheter block.
The above-mentioned butterfly wing also comprises a sleeve pipe, and described sleeve pipe is nested with the middle part at catheter block, and described fin is fixed on this sleeve pipe.
Above-mentioned resilient clip is to replace with two elastic yarns, and described two elastic yarns are set in parallel in the top of perforation, and the distance between two elastic yarns is less than the diameter of perforation, and described index point is between the extended line of two elastic yarns.
This principle is similar to the snap-fastener on conventional garments, case and bag, when draw point passes without the position of notch, can to both sides, strut by two elastic yarns, when notch position by the time this elastic yarn can enter in notch because of elastic reset, barb by the notch upper end hooks, and plays equally and prevents that syringe needle from detaching the effect of pipe close.Index point is for the ease of assembling equally.
The present invention is simple in structure, is convenient to make, and easy to use, result of use is good.Added a clip on silica gel hose, its silica gel hose than existing length extend 2cm(simultaneously draw point also lengthen in the lump 2cm), saved and used inconvenience that vascular forceps brings and potential danger, more convenient, safer; Being provided with can 360 ° of rotatable butterfly wing, and the one, be convenient to puncture, the 2nd, but increased fixed-area, by adhesive plaster, make pin fixing more firm, be difficult for deviating from, overcome existing hemodialysis and held caducous deficiency with venous detaining needle.What is more important provides a kind of withdraw of the needle mode safely and effectively, because syringe needle has three uniform notches, therefore always there is a notch can hook U-shaped silk or elastic yarn, while making the withdraw of the needle, syringe needle is unlikely to expose pipe close, thereby plays the danger appearance that while avoiding the withdraw of the needle, syringe needle may be stabbed patient or medical personnel.
The accompanying drawing explanation
Fig. 1 is population structure schematic diagram of the present invention.
Fig. 2 is decomposition texture schematic diagram of the present invention.
Fig. 3 is the schematic diagram of sleeve pipe of the present invention and pipe close thereof.
Fig. 4 is the pipe close schematic diagram of sleeve pipe of the present invention and conical through-hole thereof.
Fig. 5 is the schematic diagram of pipe close seat of the present invention and resilient clip thereof.
Fig. 6 is the A-A cutaway view of Fig. 5.
Fig. 7 is the B-B cutaway view of Fig. 5.
Fig. 8 is the top view of pipe close seat of the present invention.
Fig. 9 is the schematic diagram with resilient clip jaggy of the present invention.
Figure 10 is the structural representation of draw point of the present invention.
Figure 11 is the top view that the present invention adopts the pipe close seat of elastic yarn.
Figure 12 is the schematic diagram of resilient clip of the present invention.
Wherein, 1, draw point, 2, conduit, 3, catheter block, 4, the butterfly wing, 5, silica gel hose, 6, flow control clamp, 7, tremulous pulse draws the blood end connector, 8, pipe close, 9, needle stand, 10, fin, 11, sleeve pipe, 12, tube core, 13, baffle ring, 14, sleeve pipe, 15, through hole, 16, circular groove, 17, resilient clip, 18, the pipe close seat, 19, perforation, 20, gauge point, 21, block, 22, baffle plate, 23, barb, 24, notch, 25, inclined-plane, 26, elastic yarn, 27, the U-shaped silk, 28, the long arc section, 29, breach.
The specific embodiment
As shown in Figure 1, 2, a kind of hemodialysis venous detaining needle, comprise remaining needle main body and puncture needle, described remaining needle main body comprises that the conduit 2, catheter block 3, silica gel hose 5, the tremulous pulse that connect successively draw blood end connector 7 and pipe close 8, described puncture needle comprises that end is connected with the draw point 1 of needle stand 9, and described draw point 1, through described remaining needle main body, is characterized in that:
As shown in figure 10, the lateral surface of described draw point 1 has three notches 24 along its length successively in the position near needle point, described three notch 24 uniform ring are around in the axis of draw point 1, angle between any two is 120 degree, described notch 24 is provided with barb 23(as Figure 10 near an end of needle point, this barb is the shape in side view tilting to form because of its inwall phase syringe needle direction shape as barb), the other end is provided with inclined-plane 25;
As Fig. 3, 4, shown in 5, described pipe close 8 comprises that upper surface has the pipe close seat 18 of axial circular groove 16 and the cylinder-shaped sleeve 14 of hollow, described circular groove 16 bottom centre have perforation 19, described sleeve pipe 14 is installed in circular groove 16 and described resilient clip 17 is crimped on to circular groove 16 bottoms, this resilient clip 17 is used for stopping that the needle section of draw point 1 is from the interior disengaging of pipe close 8 when the withdraw of the needle, this sleeve pipe 14 can adopt and be threaded, flexible clamping, thereby the modes such as rotary clamping are fixed in circular groove 16 and realize spacing to resilient clip 17, make it to be unlikely to break away from the bottom of circular groove 16,
As shown in figure 12, described resilient clip 17 comprises a pair of elastic U-shaped silk 27 that has, and the top of two U-shaped silks 27 is oppositely arranged, the spacing on top is less than the diameter of above-mentioned perforation 19, two ends of a U-shaped silk 27 are connected with the end of another U-shaped silk 27 via two long arc sections 28 respectively, and long arc section 28 matches with circular groove 16 bottoms;
As shown in Figure 8, the lateral surface at pipe close seat 18 also is provided with gauge point 20, the summit conllinear of this gauge point 20 and two long arc sections 28.While being used for assembling, when needs penetrate needle point from pipe close seat 18 belows, first needle point is gone to the medial surface (or its position, opposite) of the corresponding pipe close seat 18 of gauge point 20, be unlikely to while then penetrating to be caught on by the U-shaped silk.
As shown in Figure 6,7, above-mentioned pipe close seat 18 is provided with a block 21 in the bottom of its circular groove 16, be provided with the baffle plate 22 that a length is greater than the arc of block 21 width above block 21;
As shown in Figure 9, the middle part of one of them long arc section 28 of above-mentioned resilient clip 17 is jagged 29, and the width of this breach 29 matches with the width of block 21.
The purpose of this structure is to be convenient to install, and at first the two ends of breach 29 is propped up to the both sides of block 21 during installation, and the long arc section 28 that resilient clip 17 just can not rotate in circular groove 16 bottoms, and then will be positioned at opposite side like this is pressed onto bottom and gets final product; The benefit that baffle plate 22 is set is to be longer than breach 29 because of the length of baffle plate 22, therefore can push down the resilient clip 17 of 29 liang of side positions of breach, only the long arc section of opposite side 28 need be got final product toward pressing down during installation, and not worry that the long arc section 28 on its opposite may stretch tight out.
As shown in Figure 3, above-mentioned sleeve pipe 14 inside are provided with a middle part and have baffle ring 13 through hole 15, radially and sleeve pipe 14 is divided into to upper and lower two chambers, be plugged with a tube core 12 in upper chamber, described tube core 12 is silica gel material, and tube core 12 middle parts also have a hole connected with above-mentioned through hole 15.
The effect of this tube core 12 is to play the effect of stablizing the withdraw of the needle and inserting needle, especially when the withdraw of the needle, because the tube core 12 of silica gel has certain frictional force, can play the effect that reduces withdraw of the needle speed.
As shown in Figure 4, the aperture, upper end in the hole at above-mentioned tube core 12 middle parts is less than draw point 1 diameter, and the aperture, lower end is more than or equal to draw point 1 diameter.
When being the withdraw of the needle, the benefit of this design is less than draw point 1 diameter because of the upper end bore, the upper end that will certainly make the barb 23 on draw point 1 notch 24 hook tube core 12, play the effect that reduces withdraw of the needle speed or stop the withdraw of the needle, thereby reach the purpose that syringe needle can not break away from from pipe close 8.
As shown in Figure 1, described silica gel hose 5 Shanghai are provided with flow control clamp 6.
As shown in Figure 1, also be provided with a butterfly wing 4 on above-mentioned catheter block 3, the described butterfly wing 4 comprises a pair of fin 10 be symmetricly set on catheter block 3.The butterfly wing 4 can adopt bent elastic silica gel material to make.
As shown in Figure 2, the above-mentioned butterfly wing 4 also comprises a sleeve pipe 11, and described sleeve pipe 11 is nested with at the middle part of catheter block 3, and described fin 10 is fixed on this sleeve pipe 11.
During assembling, at first resilient clip 17 is put into to pipe close seat 18, compress with sleeve pipe 14, then utilize the auxiliary of gauge point 20 that draw point 1 is passed from pipe close 8 from bottom to top, by tube core 12 from pillowcase on draw point 1, and continue this tube core 12 to be filled in to sleeve pipe 14 first halves downwards; Finally from tremulous pulse, draw blood end connector 7 and pass and can complete assembling to conduit 2, in this process, the barb 23 of notch 24 can not hinder the carrying out of assembling, and the inclined-plane 25 of notch 24 more can not stop whole assembling.The butterfly wing 4 and flow control clamp 6 can be nested with respectively on catheter block 3 and silica gel hose 5 in advance.
The present invention also has following a kind of scheme:
As shown in figure 11, above-mentioned resilient clip 17 is to replace with two elastic yarns 27, described two elastic yarns 27 are set in parallel in perforation 19 top, and the distance between two elastic yarns 27 is less than the diameter of perforation 19, and described index point 20 is between the extended line of two elastic yarns 27.
This principle is similar to the snap-fastener on conventional garments, case and bag, when draw point 1 passes without the position of notch, can to both sides, strut by two elastic yarns 27, when notch 24 positions by the time this elastic yarn 27 can because of elastic reset, enter in notch 24, barb 23 by notch 24 upper ends hooks, and plays equally and prevents that syringe needle from detaching the effect of pipe close 8.
Similar before its assemble method is same, just pass through assisting syringe needle between two parallel elastic yarns 27, passing and get final product of gauge point 20.
During use; patient's horizontal position; cervical region stretches, and head is slightly taken back, and fully exposes jugular vein; the sterilization site of puncture; puncture person pulls out protecting jacket of venous indwelling needle, and two fins 10 are stacked, and by revoling tube 11, adjusts angle; hand-held double-vane inserting needle; see that blood back sets level remaining needle, move back draw point 0.5cm, remaining needle is sent into; draw point 1 is all exited; folder closes flow control clamp 6, uses immobilization with adhesive tape, backs out the pipe close 8 of remaining needle after fixing; tremulous pulse is drawn to blood end connector 7 and be connected closely with the blank area of remaining needle, upper power traction blood.
Claims (8)
1. a hemodialysis venous detaining needle, comprise remaining needle main body and puncture needle, described remaining needle main body comprises that the conduit (2), catheter block (3), silica gel hose (5), the tremulous pulse that connect successively draw blood end connector (7) and pipe close (8), described puncture needle comprises that end is connected with the draw point of needle stand (9) (1), and described draw point (1), through described remaining needle main body, is characterized in that:
The lateral surface of described draw point (1) has three notches (24) along its length successively in the position near needle point, described three notches (24) uniform ring is around in the axis of draw point (1), described notch (24) is provided with barb (23) near an end of needle point, and the other end is provided with inclined-plane (25);
Described pipe close (8) comprises that upper surface has the pipe close seat (18) of axial circular groove (16) and the cylinder-shaped sleeve (14) of hollow, described circular groove (16) bottom centre has perforation (19), described sleeve pipe (14) is installed in circular groove (16) and by described resilient clip (17) and is crimped on circular groove (16) bottom, and this resilient clip (17) breaks away from pipe close (8) for the needle section that stops draw point (1) when the withdraw of the needle;
Described resilient clip (17) comprises a pair of elastic U-shaped silk (27) that has, and the top of two U-shaped silks (27) is oppositely arranged, the spacing on top is less than the diameter of above-mentioned perforation (19), two ends of a U-shaped silk (27) are connected with the end of another U-shaped silk (27) via two long arc sections (28) respectively, and long arc section (28) matches with circular groove (16) bottom;
Lateral surface at pipe close seat (18) also is provided with gauge point (20), the summit conllinear of this gauge point (20) and two long arc sections (28).
2. hemodialysis venous detaining needle as claimed in claim 1, it is characterized in that above-mentioned pipe close seat (18) is provided with a block (21) in the bottom of its circular groove (16), in block (21) top, be provided with the baffle plate (22) that a length is greater than the arc of block (21) width;
The middle part jagged (29) of one of them long arc section (28) of above-mentioned resilient clip (17), the width of this breach (29) matches with the width of block (21).
3. hemodialysis venous detaining needle as claimed in claim 1 or 2, it is characterized in that above-mentioned sleeve pipe (14) inside is provided with that a middle part has that through hole is (15), baffle ring radially (13) and sleeve pipe (14) is divided into to upper and lower two chambers, be plugged with a tube core (12) in upper chamber, described tube core (12) is silica gel material, and tube core (12) middle part also has a hole connected with above-mentioned through hole (15).
4. hemodialysis venous detaining needle as claimed in claim 1 or 2, is characterized in that the aperture, upper end in the hole at above-mentioned tube core (12) middle part is less than draw point (1) diameter, and the aperture, lower end is more than or equal to draw point (1) diameter.
5. hemodialysis venous detaining needle as claimed in claim 1, is characterized in that described silica gel hose (5) is provided with flow control clamp (6).
6. hemodialysis venous detaining needle as claimed in claim 1, is characterized in that on above-mentioned catheter block (3) also being provided with a butterfly wing (4), and the described butterfly wing (4) comprises a pair of fin (10) be symmetricly set on catheter block (3).
7. hemodialysis venous detaining needle as claimed in claim 6, it is characterized in that the above-mentioned butterfly wing (4) also comprises a sleeve pipe (11), described sleeve pipe (11) is nested with at the middle part of catheter block (3), and described fin (10) is fixed on this sleeve pipe (11).
8. hemodialysis venous detaining needle as claimed in claim 1, it is characterized in that above-mentioned resilient clip (17) is to replace with two elastic yarns (27), described two elastic yarns (27) are set in parallel in the top of perforation (19), and the distance between two elastic yarns (27) is less than the diameter of perforation (19), and described index point (20) is positioned between the extended line of two elastic yarns (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310464833.9A CN103463691B (en) | 2013-09-26 | 2013-09-26 | Venous indwelling needle for hemodialysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310464833.9A CN103463691B (en) | 2013-09-26 | 2013-09-26 | Venous indwelling needle for hemodialysis |
Publications (2)
| Publication Number | Publication Date |
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| CN103463691A true CN103463691A (en) | 2013-12-25 |
| CN103463691B CN103463691B (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310464833.9A Expired - Fee Related CN103463691B (en) | 2013-09-26 | 2013-09-26 | Venous indwelling needle for hemodialysis |
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Cited By (3)
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| CN104784767A (en) * | 2015-03-10 | 2015-07-22 | 北京伏尔特技术有限公司 | Arteriovenous dialysis indwelling tube and using method thereof |
| CN105943060A (en) * | 2016-07-18 | 2016-09-21 | 湖南千山制药机械股份有限公司 | Assembly device of butterfly wing type blood collection needle |
| CN109571966A (en) * | 2018-12-24 | 2019-04-05 | 江天云 | A kind of specking mechanism of butterfly wing kludge |
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| CN203525052U (en) * | 2013-09-26 | 2014-04-09 | 青岛大学医学院附属医院 | Venous indwelling needle for hemodialysis |
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| CN105943060B (en) * | 2016-07-18 | 2021-09-28 | 湖南千山制药机械股份有限公司 | Equipment of butterfly wing formula blood taking needle |
| CN109571966A (en) * | 2018-12-24 | 2019-04-05 | 江天云 | A kind of specking mechanism of butterfly wing kludge |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103463691B (en) | 2015-06-10 |
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