CN103463691B - Venous indwelling needle for hemodialysis - Google Patents
Venous indwelling needle for hemodialysis Download PDFInfo
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- CN103463691B CN103463691B CN201310464833.9A CN201310464833A CN103463691B CN 103463691 B CN103463691 B CN 103463691B CN 201310464833 A CN201310464833 A CN 201310464833A CN 103463691 B CN103463691 B CN 103463691B
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- needle
- hemodialysis
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- draw point
- circular groove
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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 row hemodialysis could save the life of patient, and the needs of patients carrying out hemodialysis for a long time sets up artery-vein Inner fistula, and artery-vein Inner fistula is the life line of hemodialysis patient.But some patient causes vascular conditions poor because of self-disease reason, artery-vein Inner fistula and Artificial Vascular Fistula cannot be set up, even permanent catheter also cannot be set up, and the life of patient has been saved in external jugular vein puncture, and the venous detaining needle used during external jugular vein puncture plays an important role.
Current 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, but still has following deficiency, as: there is fixing problem loosely, 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, inconvenient when the front vascular forceps of upper power traction blood clamps this part, and vascular forceps has certain weight metal object, easy tractive dialysis venous detaining needle, makes pin be shifted, even deviates from, more easily crush patient, increase the misery of patient.Also there is the deficiency being not easy to hold, the catheter block of this remaining needle is a pyramidal structure body, needs firmly to hold during use.But topmost deficiency can cause syringe needle to expose from conduit when being the withdraw of the needle, the both hands of patient or medical personnel may be pricked, light then cause to stab and heavy then cause infection, for this situation, the current medical personnel withdraw of the needle of can only trying one's best is slowly a little to avoid syringe needle to expose rapidly, but dynamics is also not easily grasped, and may bring very large danger in a word when syringe needle soon exposes to medical personnel.
Summary of the invention
The object of this invention is to provide a kind of hemodialysis venous detaining needle, to make up the deficiency of existing dialysis venous detaining needle.
A kind of hemodialysis venous detaining needle, comprise remaining needle main body and puncture needle, described remaining needle main body comprises the conduit, catheter block, silica gel hose, the tremulous pulse that connect successively and draws blood end connector and pipe close, described puncture needle comprises the draw point that end is connected with needle stand, and described draw point is through described remaining needle main body, it 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, namely angle is between any two 120 degree, and described notch is provided with barb near one end of needle point, and the other end is provided with inclined-plane;
Described pipe close comprises upper surface and 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 to be installed in circular groove and to be crimped on bottom circular groove by described resilient clip, this resilient clip when the withdraw of the needle for stopping that the needle section of draw point departs from pipe close (8), this sleeve pipe can adopt be threaded, the mode such as flexible clamping, rotary clamping is fixed in circular groove thus to realize resilient clip spacing, makes it the bottom being unlikely to depart from circular groove;
Described resilient clip comprises and has elastic U-shaped silk for a pair, 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;
Also gauge point is provided with, the summit conllinear of this gauge point and two long arc sections at the lateral surface of pipe close seat.During for assembling, when needle point penetrating by needs below pipe close seat, first needle point being gone to the medial surface (or its opposite side) of the pipe close seat corresponding to gauge point, being unlikely to when then penetrating to be caught on by U-shaped silk.
Above-mentioned pipe close seat is provided with a block in the bottom of its circular groove, is provided with the baffle plate that a length is greater than the arc of stop 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 object of this structure is convenient to install, and first the two ends of breach propped up the both sides of block during installation, and the long arc section being positioned at opposite side at circular groove lower rotation, and then would not to be pressed onto bottom by such resilient clip; The benefit arranging baffle plate is because the length of baffle plate is longer than breach, therefore, it is possible to push down the resilient clip of breach two side position, only by the long arc section of opposite side toward pressing down, and need not worry that the long arc section on its opposite may stretch tight out during installation.
Above-mentioned inside pipe casing is provided with a middle part and has through hole, radial baffle ring and sleeve pipe be divided into upper and lower two chambers, and in upper chamber, be plugged with a tube core, described tube core is silica gel material, and also has a hole connected with above-mentioned through hole in the middle part of tube core.
The effect of this tube core is the effect playing the stable withdraw of the needle and inserting needle, and especially when the withdraw of the needle, the tube core due to silica gel has certain frictional force, can play the effect reducing withdraw of the needle speed.
The aperture, upper end in the hole in the middle part of above-mentioned tube core is less than draw point diameter, and aperture, lower end is more than or equal to draw point diameter.
Because upper end bore is less than draw point diameter when the benefit of this design is the withdraw of the needle, the upper end of the barbs hold tube core on draw point notch will certainly be made, play and reduce withdraw of the needle speed or stop the effect of the withdraw of the needle, thus reach the object that syringe needle can not depart from from pipe close.
Described silica gel hose is provided with flow control clamp.
Above-mentioned catheter block is also provided with a butterfly wing, the described butterfly wing comprises a pair 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 replaces 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 without notch position through time, can strut to both sides by two elastic yarns, when notch position by time this elastic yarn can enter in notch because of elastic reset, by the barbs hold of notch upper end, play the effect preventing syringe needle from detaching pipe close equally.Index point is for the ease of assembling equally.
Structure of the present invention is simple, is convenient to make, and easy to use, result of use is good.Silica gel hose has added a clip, and its silica gel hose also lengthens 2cm in the lump than draw point while of existing extension 2cm(), eliminate the inconvenience and potential danger that use vascular forceps to bring, more convenient, safer; Being provided with can 360 ° of rotatable butterfly wing, and one is be convenient to puncture, and two be the increase in can fixed-area, makes pin fixing more firm, not easily deviate from, overcome existing hemodialysis venous detaining needle and hold caducous deficiency by adhesive plaster.What is more important provides one withdraw of the needle mode safely and effectively, because syringe needle has three uniform notches, therefore a notch is always had can to hook U-shaped silk or elastic yarn, when making the withdraw of the needle, syringe needle is unlikely to expose pipe close, thus plays the danger that syringe needle when avoiding the withdraw of the needle may stab patient or medical personnel and occur.
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 sectional view of Fig. 5.
Fig. 7 is the B-B sectional view of Fig. 5.
Fig. 8 is the top view of pipe close seat of the present invention.
Fig. 9 is the schematic diagram of band of the present invention resilient clip jaggy.
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 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, pipe close seat, 19, perforation, 20, gauge point, 21, block, 22, baffle plate, 23, barb, 24, notch, 25, inclined-plane, 26, elastic yarn, 27, U-shaped silk, 28, long arc section, 29, breach.
Detailed description of the invention
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 the conduit 2, catheter block 3, silica gel hose 5, the tremulous pulse that connect successively and draws blood end connector 7 and pipe close 8, described puncture needle comprises the draw point 1 that end is connected with needle stand 9, and described draw point 1 is through described remaining needle main body, it 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, namely angle is between any two 120 degree, described notch 24 is provided with barb 23(as Figure 10 near one end of needle point, this barb be because its inwall phase syringe needle direction tilts the shape in side view that formed as the shape of barb), the other end is provided with inclined-plane 25;
As Fig. 3, 4, shown in 5, described pipe close 8 comprises upper surface and 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 to be installed in circular groove 16 and to be crimped on bottom circular groove 16 by described resilient clip 17, this resilient clip 17 when the withdraw of the needle for stopping that the needle section of draw point 1 departs from pipe close 8, this sleeve pipe 14 can adopt and be threaded, flexible clamping, the modes such as rotary clamping are fixed in circular groove 16 thus to realize resilient clip 17 spacing, make it the bottom being unlikely to depart from circular groove 16,
As shown in figure 12, described resilient clip 17 comprises and has elastic U-shaped silk 27 for a pair, 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 match bottom long arc section 28 and circular groove 16;
As shown in Figure 8, be also provided with gauge point 20 at the lateral surface of pipe close seat 18, the summit conllinear of this gauge point 20 and two long arc sections 28.During for assembling, when needle point penetrating by needs below pipe close seat 18, first needle point being gone to the medial surface (or its opposite side) of the pipe close seat 18 corresponding to gauge point 20, being unlikely to when then penetrating to be caught on by 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, is 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 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.
The object of this structure is convenient to install, and first the two ends of breach 29 propped up the both sides of block 21 during installation, and the long arc section 28 being positioned at opposite side at circular groove 16 lower rotation, and then would not to be pressed onto bottom by such resilient clip 17; The benefit arranging baffle plate 22 is because the length of baffle plate 22 is longer than breach 29, therefore, it is possible to push down the resilient clip 17 of breach 29 liang of side positions, only by the long arc section 28 of opposite side toward pressing down, and need not worry that the long arc section 28 on its opposite may stretch tight out during installation.
As shown in Figure 3, above-mentioned sleeve pipe 14 inside is provided with a middle part and has through hole 15, radial baffle ring 13 and sleeve pipe 14 be divided into upper and lower two chambers, a tube core 12 is plugged with in upper chamber, described tube core 12 is silica gel material, and also has a hole connected with above-mentioned through hole 15 in the middle part of tube core 12.
The effect of this tube core 12 is the effects playing the stable 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 reducing withdraw of the needle speed.
As shown in Figure 4, the aperture, upper end in the hole in the middle part of above-mentioned tube core 12 is less than draw point 1 diameter, and aperture, lower end is more than or equal to draw point 1 diameter.
Because upper end bore is less than draw point 1 diameter when the benefit of this design is the withdraw of the needle, the barb 23 on draw point 1 notch 24 will certainly be made to hook the upper end of tube core 12, play and reduce withdraw of the needle speed or stop the effect of the withdraw of the needle, thus reach the object that syringe needle can not depart from from pipe close 8.
As shown in Figure 1, described silica gel hose 5 Shanghai is provided with flow control clamp 6.
As shown in Figure 1, above-mentioned catheter block 3 is also provided with a butterfly wing 4, the described butterfly wing 4 comprises the fin 10 be symmetricly set on for a pair 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, first resilient clip 17 is put into pipe close seat 18, compress with sleeve pipe 14, then utilize the auxiliary of gauge point 20 to be passed from pipe close 8 by draw point 1 from bottom to top, by tube core 12 from pillowcase on draw point 1, and continue this tube core 12 is filled in sleeve pipe 14 first half downwards; Finally draw blood end connector 7 to conduit 2 through completing assembling from tremulous pulse, the barb 23 of notch 24 can not hinder the carrying out of assembling in the process, 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 in advance on catheter block 3 and silica gel hose 5.
The present invention also has following a kind of scheme:
As shown in figure 11, above-mentioned resilient clip 17 replaces 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 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 without notch position through time, can strut to both sides by two elastic yarns 27, when notch 24 position by time this elastic yarn 27 can enter because of elastic reset in notch 24, hooked by the barb 23 of notch 24 upper end, play the effect preventing syringe needle from detaching pipe close 8 equally.
Its assemble method with similar before, just by gauge point 20 auxiliary by syringe needle between two parallel elastic yarns 27 through.
During use; patient's horizontal position; cervical region stretches, and head is slightly to the left, fully exposes jugular vein; sterilization site of puncture; puncture person pulls out protecting jacket of venous indwelling needle, is stacked by two fins 10, adjusts angle by revoling tube 11; 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, with immobilization with adhesive tape, backs out the pipe close 8 of remaining needle after fixing; tremulous pulse being drawn blood end connector 7 is connected closely with the blank area of remaining needle, upper power traction blood.
Claims (7)
1. a hemodialysis venous detaining needle, comprise remaining needle main body and puncture needle, described remaining needle main body comprises the conduit (2), catheter block (3), silica gel hose (5), the tremulous pulse that connect successively and draws blood end connector (7) and pipe close (8), described puncture needle comprises the draw point (1) that end is connected with needle stand (9), and described draw point (1) is through described remaining needle main body, it 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 notch (24) uniform ring are around in the axis of draw point (1), described notch (24) is provided with barb (23) near one end of needle point, and the other end is provided with inclined-plane (25);
Described pipe close (8) comprises upper surface and 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) to be installed in circular groove (16) and resilient clip (17) to be crimped on circular groove (16) bottom, this resilient clip (17) when the withdraw of the needle for stopping that the needle section of draw point (1) departs from pipe close (8);
Described resilient clip (17) comprises and has elastic U-shaped silk (27) for a pair, 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;
Gauge point (20) is also provided with, the summit conllinear of this gauge point (20) and two long arc sections (28) at the lateral surface of pipe close seat (18).
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), be provided with the baffle plate (22) that a length is greater than the arc of block (21) width in block (21) top;
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 a middle part and has through hole (15), radial baffle ring (13) and sleeve pipe (14) be divided into upper and lower two chambers, a tube core (12) is plugged with 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 3, it 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, 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, it is characterized in that above-mentioned catheter block (3) being also provided with a butterfly wing (4), the described butterfly wing (4) comprises a pair 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).
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 |
|---|---|
| CN103463691A CN103463691A (en) | 2013-12-25 |
| CN103463691B true CN103463691B (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310464833.9A Expired - Fee Related CN103463691B (en) | 2013-09-26 | 2013-09-26 | Venous indwelling needle for hemodialysis |
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| CN (1) | CN103463691B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104784767B (en) * | 2015-03-10 | 2018-03-30 | 北京伏尔特技术有限公司 | A kind of arterial-venous dialysis puts pipe and its application method |
| 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 |
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| CN101296718A (en) * | 2005-10-25 | 2008-10-29 | 泰尔茂株式会社 | Indwelling needle assembly |
| CN102836479A (en) * | 2012-09-13 | 2012-12-26 | 苏州林华医疗器械有限公司 | Security-type venous indwelling needle |
| CN203075435U (en) * | 2012-12-03 | 2013-07-24 | 康而富控股股份有限公司 | Needle head protecting device for intravenous injection indwelling needle |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001321439A (en) * | 2000-05-15 | 2001-11-20 | Terumo Corp | Piercing tool and indwelling needle assembly |
| JP3748212B2 (en) * | 2001-03-13 | 2006-02-22 | 正規 長谷川 | Indwelling needle set |
| JP4606430B2 (en) * | 2007-03-22 | 2011-01-05 | テルモ株式会社 | Medical instrument storage container |
| JP5191823B2 (en) * | 2008-07-01 | 2013-05-08 | テルモ株式会社 | Indwelling needle and puncture needle |
| JP2012029974A (en) * | 2010-08-02 | 2012-02-16 | Terumo Corp | Indwelling needle assembly |
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- 2013-09-26 CN CN201310464833.9A patent/CN103463691B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101296718A (en) * | 2005-10-25 | 2008-10-29 | 泰尔茂株式会社 | Indwelling needle assembly |
| CN201042538Y (en) * | 2007-05-24 | 2008-04-02 | 吴林元 | Safe lien needle |
| CN102836479A (en) * | 2012-09-13 | 2012-12-26 | 苏州林华医疗器械有限公司 | Security-type venous indwelling needle |
| CN203075435U (en) * | 2012-12-03 | 2013-07-24 | 康而富控股股份有限公司 | Needle head protecting device for intravenous injection indwelling needle |
| 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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| CN103463691A (en) | 2013-12-25 |
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