CN102512729B - Torsional safety remaining needle - Google Patents
Torsional safety remaining needle Download PDFInfo
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- CN102512729B CN102512729B CN2011104601352A CN201110460135A CN102512729B CN 102512729 B CN102512729 B CN 102512729B CN 2011104601352 A CN2011104601352 A CN 2011104601352A CN 201110460135 A CN201110460135 A CN 201110460135A CN 102512729 B CN102512729 B CN 102512729B
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- draw point
- steel ball
- steel
- point seat
- seat shell
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Abstract
The invention belongs to the field of venous (arterial) transfusion (blood transfusion) medical equipment, and particularly relates to a torsional safety remaining needle. The torsional safety remaining needle comprises a steel needle seat. The outer wall of the steel needle seat is provided with a bulge loop; a steel needle seat shell is fixed outside the steel needle seat; compression springs are respectively arranged in a cavity formed between the front end of the bulge loop and the steel needle seat shell and a cavity formed between the steel needle seat and the steel needle seat shell; the rear end of the bulge loop is provided with steel balls; the steel needle seat shell is provided with steel ball movement through holes in the radial direction; the steel balls are respectively located in the steel ball movement through holes; the lower parts of the steel balls are abutted onto the steel needle seat; a recovery switch is sheathed outside the steel needle seat shell; the tail end of the shell of the recovery switch is fixedly provided with a recovery cylinder; the steel needle seat shell is contacted with a step inner bore arranged on the recovery switch; a small-diameter end is provided with steel ball limit grooves and a horizontal guide slot; the top parts of the steel balls are respectively located in the steel ball limit grooves; the steel ball limit grooves are communicated with a large-diameter end through the horizontal guide slot; and the large-diameter end is located at the tail end of the recovery switch. The torsional safety remaining needle is provided with a steel needle recovery device, thereby, abandoned steel needles can be prevented from puncturing people, and cross infection can be avoided. Moreover, the torsional safety remaining needle is safe and reliable in use.
Description
Technical field
The present invention relates to a kind of torsional mode safety indwelling needle, be used for quiet (moving) arteries and veins transfusion (blood), belong to medical instruments field.
Background technology
Remaining needle is used clinical at present widely, it adopts the form of flexible catheter cover draw point, flexible catheter and draw point puncture after the human vas success simultaneously, extract draw point out and flexible catheter is retained in human vas, it can keep somewhere a couple of days at blood vessel, reduces misery that the patient causes because of venipuncture repeatedly and reaches fear to having an injection, alleviates patient's impatience, be convenient to the infusion of the rescue medication of clinical application and critical, critical patient, alleviate nurse's workload.
Common remaining needle is after clinical puncture finishes, and the draw point of extraction is because can not in time handling, perhaps in discarded process; can not effectively protect draw point; make that in this process exposed needle point is stabbed/scratched patient or associated care personnel formation easily, causes cross infection.Therefore after the success of retained needle puncture blood vessel, it is clinical pressing for that draw point is reclaimed protection.
Summary of the invention
According to above deficiency of the prior art, the technical problem to be solved in the present invention is: the draw point that provides a kind of and carry the draw point retracting device, can avoid going out of use thorn injures cross infection and safe and reliable torsional mode safety indwelling needle.
The technical solution adopted for the present invention to solve the technical problems is: described torsional mode safety indwelling needle, comprise draw point, the draw point seat, flexible catheter and catheter block, draw point, flexible catheter is separately fixed at the draw point seat, the front end of catheter block, draw point is arranged in flexible catheter, it is characterized in that: the outer wall of draw point seat is provided with bulge loop, fixing draw point seat shell outside the draw point seat, the front end of bulge loop, the compression spring is installed in the cavity that forms between draw point seat and the draw point seat shell, the bulge loop rear end arranges steel ball, radially be provided with steel ball motion through hole on the draw point seat shell, steel ball is arranged in steel ball motion through hole, the steel ball bottom is against on the draw point seat, the outer cover of draw point seat shell reinstalls the receipts switch, reclaim switch and be provided with inner bore of step, the miner diameter end of inner bore of step and draw point seat housing contacts, miner diameter end is provided with steel ball limited impression and horizontal guide groove, the top of steel ball is arranged in the steel ball limited impression, the steel ball limited impression communicates with bigger diameter end by horizontal guide groove, bigger diameter end is positioned at the end that reclaims switch, and the end of draw point seat shell is recovery cylinder fixedly.
In original state, draw point is fixed on the draw point seat, the compression spring is between draw point seat, draw point seat shell and the bulge loop, this moment, steel ball was in the steel ball motion through hole of draw point seat shell, reclaim the inner bore of step miner diameter end extruding steel ball of switch, it is spacing that steel ball is carried out the draw point seat, thereby stop the movement of draw point seat; After clinical puncture finishes; draw point is extracted out from quiet/tremulous pulse; rotate then and reclaim switch; in this process; the steel ball top is arranged in the steel ball limited impression all the time; when the horizontal guide groove that reclaims switch was aimed at steel ball, the preceding receipts switch that pushes back made the steel ball relative motion to the bigger diameter end of inner bore of step; under the active force of compression spring; steel ball is forced to move on steel ball moves through hole, no longer the draw point seat is played position-limiting action, and the draw point seat retreats in the recovery cylinder together with draw point in the effect of compression spring next time; recovery cylinder has enough spaces to hold draw point; draw point is isolated from the outside, avoids draw point mistake thorn, play protection related personnel's effect.Wherein, steel ball motion through hole is the radially active tunnel of steel ball.Before reclaiming draw point, must rotate reclaiming switch, horizontal guide groove is aimed at steel ball, could realize reclaiming switch before push away, so can prevent the draw point recovery that causes because of accident promotion recovery switch, safe and reliable.In addition, the steel ball top is arranged in the steel ball limited impression, can prevent that reclaiming switch moves forward and backward.
The one side that the bulge loop of described draw point seat contacts with steel ball is lozenges or arc surface, when pushing away before reclaiming switch, is convenient to steel ball and moves on steel ball moves through hole.
Among the present invention, recovery cylinder and the draw point seat shell fixed form between the two has multiple, is preferably as follows two kinds of schemes:
Scheme one: described recovery cylinder and draw point seat shell adopt interference fit.Can guarantee that by interference fit recovery cylinder and draw point seat shell are connected to one.
Scheme two: described recovery cylinder is connected by screw threads for fastening with draw point seat shell.By being threaded, can either guarantee that recovery cylinder and draw point seat shell connect as one, and are convenient to production and assembly again.
Described steel ball limited impression has following two kinds of designs:
Scheme one: described steel ball limited impression is the annular groove that arranges along the miner diameter end inwall;
Scheme two: described steel ball limited impression is the circular groove that arranges along the miner diameter end inwall, and an end of circular arc communicates with horizontal guide groove.Like this, an end face of circular arc plays a part spacing, when the recovery switch goes to the circular arc end of steel ball limited impression, stops operating under the effect of steel ball, and at this moment, laterally guide groove just in time aligns steel ball, and the preceding receipts switch that pushes back can trigger and reclaim action.
The beneficial effect that the present invention has is:
This torsional mode safety indwelling needle is after successfully puncturing, by preceding pushing back the receipts switch, the draw point seat is advanced in the recovery cylinder together with steel needle retractable, the draw point needle point can not exposed, thereby protection patient, medical personnel and other related personnel's safety avoid thorn to injure cross infection; By steel ball limited impression and horizontal guide groove are set at the recovery switch, before reclaiming draw point, must rotate reclaiming switch, horizontal guide groove is aimed at steel ball, could realize reclaiming switch before push away, therefore can prevent because accident promotes to reclaim the draw point recovery that switch causes, safe and reliable.
Description of drawings
Fig. 1 is structural representation of the present invention under the original state;
Fig. 2 is the structural representation of the recovery switch among Fig. 1;
Fig. 3 is the right view of Fig. 2 among the embodiment one;
Fig. 4 is the right view of Fig. 2 among the embodiment two;
Fig. 5 is the A-A profile of Fig. 3;
Fig. 6 is that draw point reclaims back structural representation of the present invention;
Fig. 7 is the profile of draw point seat.
Among the figure: 1, sheath; 2, draw point; 3, flexible catheter; 4, catheter block; 5, draw point seat shell; 6, compression spring; 7, draw point seat; 8, reclaim switch; 9, steel ball; 10, bulge loop; 11, recovery cylinder; 12, miner diameter end; 13, steel ball limited impression; 14, bigger diameter end; 15, horizontal guide groove; 16, lozenges.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are described further:
Shown in Fig. 1～7, the torsional mode safety indwelling needle, comprise draw point 2, draw point seat 7, flexible catheter 3 and catheter block 4, draw point 2, flexible catheter 3 is separately fixed at draw point seat 7, the front end of catheter block 4, draw point 2 is arranged in flexible catheter 3, the outer wall of draw point seat 7 is provided with bulge loop 10, fixing draw point seat shell 5 outside draw point seat 7, the front end of bulge loop 10, compression spring 6 is installed in the cavity that forms between draw point seat 7 and the draw point seat shell 5, bulge loop 10 rear ends arrange steel ball 9, radially be provided with steel ball motion through hole on the draw point seat shell 5, steel ball motion through hole is the radially active tunnel of steel ball 9, steel ball 9 is arranged in steel ball motion through hole, the bottom of steel ball 9 is against on the draw point seat 7, the outer cover of draw point seat shell 5 reinstalls receives switch 8, reclaim switch 8 and be provided with inner bore of step, the miner diameter end 12 of inner bore of step contacts with draw point seat shell 5, miner diameter end 12 is provided with steel ball limited impression 13 and horizontal guide groove 15, steel ball limited impression 13 communicates with bigger diameter end by horizontal guide groove 15, bigger diameter end 14 is positioned at the end that reclaims switch 8, and the end of draw point seat shell 5 is recovery cylinder 11 fixedly.
Wherein, recovery cylinder 11 is hollow structure, and an end seals an end opening, and opening and draw point seat shell 5 ends are secure fit or interference fit, produces and guaranteed performance for convenient, preferentially selects for use screw threads for fastening to cooperate; The one side that the bulge loop 10 of draw point seat 7 contacts with steel ball 9 is lozenges 16, as shown in Figure 7; Steel ball 9 tops are arranged in steel ball limited impression 13 and can prevent from reclaiming switch 8 and move forward and backward; In order to guarantee use safety and the sanitary condition of torsional mode safety indwelling needle, can be provided with sheath 1 at the remaining needle front end by the structure of traditional remaining needle.
As shown in Figure 1, in original state, draw point is fixed on the draw point seat 7, compression spring 6 is between draw point seat 7, draw point seat shell 5 and the bulge loop 10, this moment, steel ball 9 was in the steel ball motion through hole of draw point seat shell 5, reclaim the inner bore of step miner diameter end extruding steel ball 9 of switch 8, it is spacing that 9 pairs of draw point seats of steel ball 7 are carried out, thereby stop the movement of draw point seat 7; After clinical puncture finishes, draw point is extracted out from quiet/tremulous pulse, rotate then and reclaim switch 8, in this process, steel ball 9 tops are arranged in steel ball limited impression 13 all the time, when the horizontal guide groove 15 that reclaims switch 8 is aimed at steel ball 9, before push back and receive switch 8, make steel ball 9 relative motioies to the bigger diameter end 14 of inner bore of step, under the active force of compression spring 6, steel ball 9 is forced to move on steel ball moves through hole, no longer to 7 position-limiting actions of draw point seat, draw point seat 7 retreats in the recovery cylinder 11, as shown in Figure 6 next time together with the effect of draw point 2 at compression spring 6.Wherein, recovery cylinder 11 has enough spaces to hold draw point, and draw point is isolated from the outside, and avoids draw point mistake thorn, plays protection related personnel's effect.
Wherein, the steel ball limited impression has following two kinds of designs:
Embodiment one: the steel ball limited impression is the annular groove that arranges along the miner diameter end inwall, shown in Fig. 3,5;
Embodiment two: the steel ball limited impression is the circular groove that arranges along the miner diameter end inwall, one end of circular arc communicates with horizontal guide groove 15, as shown in Figure 4, like this, an end face of circular arc plays a part spacing, when recovery switch 8 goes to the circular arc end of steel ball limited impression, stop operating under the effect of steel ball 9, at this moment, laterally guide groove 15 just in time aligns steel ball 9, before push back and receive switch 8, can trigger and reclaim action.
Claims (6)
1. torsional mode safety indwelling needle, comprise draw point, the draw point seat, flexible catheter and catheter block, draw point, flexible catheter is separately fixed at the draw point seat, the front end of catheter block, draw point is arranged in flexible catheter, it is characterized in that: the outer wall of draw point seat is provided with bulge loop, fixing draw point seat shell outside the draw point seat, the front end of bulge loop, the compression spring is installed in the cavity that forms between draw point seat and the draw point seat shell, the bulge loop rear end arranges steel ball, radially be provided with steel ball motion through hole on the draw point seat shell, steel ball is arranged in steel ball motion through hole, the steel ball bottom is against on the draw point seat, and the outer cover of draw point seat shell reinstalls the receipts switch, reclaims switch and is provided with inner bore of step, the miner diameter end of inner bore of step and draw point seat housing contacts, miner diameter end is provided with steel ball limited impression and horizontal guide groove, and the top of steel ball is arranged in the steel ball limited impression, and the steel ball limited impression communicates with bigger diameter end by horizontal guide groove, bigger diameter end is positioned at the end that reclaims switch, and the end of draw point seat shell is recovery cylinder fixedly.
2. torsional mode safety indwelling needle according to claim 1, it is characterized in that: the one side that the bulge loop rear end of described draw point seat contacts with steel ball is lozenges or arc surface.
3. torsional mode safety indwelling needle according to claim 1 and 2 is characterized in that: described recovery cylinder and draw point seat shell employing interference fit.
4. torsional mode safety indwelling needle according to claim 1 and 2, it is characterized in that: described recovery cylinder is connected by screw threads for fastening with draw point seat shell.
5. torsional mode safety indwelling needle according to claim 1 and 2 is characterized in that: described steel ball limited impression is the annular groove that arranges along the miner diameter end inwall.
6. torsional mode safety indwelling needle according to claim 1 and 2 is characterized in that: described steel ball limited impression is the circular groove that arranges along the miner diameter end inwall, and an end of circular arc communicates with horizontal guide groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104601352A CN102512729B (en) | 2011-12-31 | 2011-12-31 | Torsional safety remaining needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104601352A CN102512729B (en) | 2011-12-31 | 2011-12-31 | Torsional safety remaining needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102512729A CN102512729A (en) | 2012-06-27 |
| CN102512729B true CN102512729B (en) | 2013-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104601352A Active CN102512729B (en) | 2011-12-31 | 2011-12-31 | Torsional safety remaining needle |
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|---|---|
| CN (1) | CN102512729B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5893845A (en) * | 1996-06-21 | 1999-04-13 | Becton Dickinson & Company | Telescoping needle shield |
| CN2726611Y (en) * | 2004-09-27 | 2005-09-21 | 陈永曦 | Retention needle having protective sheath |
| CN101104094A (en) * | 2007-08-10 | 2008-01-16 | 张亚根 | Safety type artery and venous indwelling needle with airtight interface without needle |
| CN201244280Y (en) * | 2008-08-28 | 2009-05-27 | 江西三鑫医疗器械集团有限公司 | Safety retaining needle |
| CN202478298U (en) * | 2011-12-31 | 2012-10-10 | 山东新华安得医疗用品有限公司 | Rotary safe indwelling needle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1225294C (en) * | 2002-03-29 | 2005-11-02 | 上海康德莱企业发展集团有限公司 | Safety medical needle device |
-
2011
- 2011-12-31 CN CN2011104601352A patent/CN102512729B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5893845A (en) * | 1996-06-21 | 1999-04-13 | Becton Dickinson & Company | Telescoping needle shield |
| CN2726611Y (en) * | 2004-09-27 | 2005-09-21 | 陈永曦 | Retention needle having protective sheath |
| CN101104094A (en) * | 2007-08-10 | 2008-01-16 | 张亚根 | Safety type artery and venous indwelling needle with airtight interface without needle |
| CN201244280Y (en) * | 2008-08-28 | 2009-05-27 | 江西三鑫医疗器械集团有限公司 | Safety retaining needle |
| CN202478298U (en) * | 2011-12-31 | 2012-10-10 | 山东新华安得医疗用品有限公司 | Rotary safe indwelling needle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102512729A (en) | 2012-06-27 |
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Denomination of invention: Torsion safety indwelling needle Effective date of registration: 20210804 Granted publication date: 20130710 Pledgee: Zibo sub branch of qishang Bank Co.,Ltd. Pledgor: SHINVA ANDE HEALTHCARE APPARATUS Co.,Ltd. Registration number: Y2021980007266 |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 255086 No. 999, Zunxian Road, high tech Zone, Zibo City, Shandong Province Patentee after: Shandong ande medical supplies Co.,Ltd. Address before: No.77, North Road, development zone, high tech Zone, Zibo City, Shandong Province Patentee before: SHINVA ANDE HEALTHCARE APPARATUS Co.,Ltd. |