CN202478298U - Rotary safe indwelling needle - Google Patents
Rotary safe indwelling needle Download PDFInfo
- Publication number
- CN202478298U CN202478298U CN2011205747319U CN201120574731U CN202478298U CN 202478298 U CN202478298 U CN 202478298U CN 2011205747319 U CN2011205747319 U CN 2011205747319U CN 201120574731 U CN201120574731 U CN 201120574731U CN 202478298 U CN202478298 U CN 202478298U
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- steel ball
- draw point
- point seat
- steel
- diameter end
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Abstract
The utility model belongs to the field of vein/artery transfusion (or blood transfusion) medical equipment, and relates to a rotary safe indwelling needle. The rotary safe indwelling needle comprises a steel needle base, wherein a bulge loop is arranged on the outer wall of the steel needle base; a steel needle base housing is fixed out of the steel needle base; a compression spring is equipped in a cavity formed among the front end of the bulge loop, the steel needle base and the steel needle base housing; a steel ball is arranged at the back end of the bulge loop; a steel ball motion through hole is radially formed on the steel needle base; the steel ball is located in the steel ball motion through hole; the lower part of the steel ball props against the steel needle base; a recovery switch is sleeved on the outer part of the steel needle base housing; a recovery cylinder is fixed at the end of the housing; the steel needle base housing is in contact with a stepped inner hole arranged on the recovery switch; a steel ball limiting groove and a transverse guide groove are formed on a smaller diameter end; the top of the steel ball is located in the steel ball limiting groove; the steel ball limiting groove is communicated with a larger diameter end through the transverse guide groove; and the larger diameter end is located at the end of the recovery switch. The rotary safe indwelling needle is provided with the steel needle recovery device, so that the puncture and the cross infection caused by the waste steel needle can be avoided, and the needle is safe and reliable to use.
Description
Technical field
This utility model relates to a kind of torsional mode safety indwelling needle, is used for quiet (moving) arteries and veins transfusion (blood), belongs to medical instruments field.
Background technology
Remaining needle is used clinical at present widely, and it adopts the form of flexible catheter cover draw point, and 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 the patient because of the misery that venipuncture repeatedly causes reaches the fear to having an injection, and 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 of can not in time handling, perhaps in depleted 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.
The utility model content
According to above deficiency of the prior art, the technical problem that this utility model will solve 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.
This utility model solves the technical scheme that its technical problem adopted: described torsional mode safety indwelling needle, comprise draw point, draw point seat, flexible catheter and catheter block, and draw point, flexible catheter are separately fixed at the front end of draw point seat, 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, at draw point seat external fixation draw point seat shell; The compression spring is installed in the cavity that forms between the front end of bulge loop, draw point seat and the draw point seat shell, and the bulge loop rear end is provided with steel ball, radially is 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 through 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, and this moment, steel ball was in the steel ball motion through hole of draw point seat shell, reclaims 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 moving of draw point seat; After clinical puncture finishes, draw point is extracted out from quiet/tremulous pulse, rotated 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 is aimed at steel ball, and the preceding receipts switch that pushes back; Make the bigger diameter end of steel ball relative motion to inner bore of step, under the active force of compression spring, steel ball is compelled to be moved on steel ball moves through hole; No longer the draw point seat is played position-limiting action, the draw point seat retreats in the recovery cylinder together with the effect of draw point at the compression spring next time, and 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 will reclaim switch and rotate, horizontal guide groove is aimed at steel ball, could realize the recovery switch before push away, so can prevent because of the recovery of the accident promotion recovery draw point that switch caused, 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 said draw point seat contacts with steel ball is lozenges or arc surface, when before reclaiming switch, pushing away, is convenient to steel ball and on steel ball moves through hole, moves.
In this utility model, recovery cylinder and the draw point seat shell fixed form between the two has multiple, preferred following two kinds of schemes:
Scheme one: described recovery cylinder and draw point seat shell adopt interference fit.Can guarantee that through interference fit recovery cylinder and draw point seat shell are connected to one.
Scheme two: described recovery cylinder is connected through screw threads for fastening with draw point seat shell.Through 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 is provided with along the miner diameter end inwall;
Scheme two: described steel ball limited impression is the circular groove that is provided with 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, under the effect of steel ball, stops operating, 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 this utility model had is:
This torsional mode safety indwelling needle is after successfully puncturing; Through 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; Through steel ball limited impression and horizontal guide groove are set on the recovery switch; Before reclaiming draw point; Must will reclaim switch and rotate, horizontal guide groove is aimed at steel ball, could realize the recovery switch before push away; Therefore can prevent to reclaim because of accident promotes to reclaim the draw point that switch caused, safe and reliable.
Description of drawings
Fig. 1 is the structural representation of this utility model 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 the structural representation that draw point reclaims back this utility model;
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 the embodiment of this utility model is done and to further describe:
Shown in Fig. 1～7, the torsional mode safety indwelling needle comprises draw point 2, draw point seat 7, flexible catheter 3 and catheter block 4; Draw point 2, flexible catheter 3 are separately fixed at the front end of draw point seat 7, catheter block 4, and draw point 2 is arranged in flexible catheter 3, and the outer wall of draw point seat 7 is provided with bulge loop 10; At draw point seat 7 external fixation draw point seat shells 5, compression spring 6 is installed in the cavity that forms between the front end of bulge loop 10, draw point seat 7 and the draw point seat shell 5, bulge loop 10 rear ends are provided with 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, and 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, reclaims switch 8 and is provided with inner bore of step, and 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 through horizontal guide groove 15, and 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 a 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, and is as shown in Figure 7; Steel ball 9 tops are arranged in steel ball limited impression 13 and can prevent to reclaim switch 8 and move forward and backward; In order to guarantee the safe in utilization and 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, and 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 moving of draw point seat 7; After clinical puncture finishes, draw point is extracted out from quiet/tremulous pulse, rotated 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 that reclaims switch 8 15 is aimed at steel ball 9; Before push back and receive switch 8, make the bigger diameter end 14 of steel ball 9 relative motioies to inner bore of step, under the active force of compression spring 6; Steel ball 9 is compelled on steel ball moves through hole, to move; No longer to 7 position-limiting actions of draw point seat, draw point seat 7 retreats in the recovery cylinder 11 together with the effect of draw point 2 at compression spring 6 next time, and is as shown in Figure 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 is provided with along the miner diameter end inwall, like Fig. 3, shown in 5;
Embodiment two: the steel ball limited impression is the circular groove that is provided with along the miner diameter end inwall, and an end of circular arc communicates with horizontal guide groove 15, and is 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; Under the effect of steel ball 9, stop operating, 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. a torsional mode safety indwelling needle comprises draw point, draw point seat, flexible catheter and catheter block, and draw point, flexible catheter are separately fixed at the front end of draw point seat, 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, at draw point seat external fixation draw point seat shell; The compression spring is installed in the cavity that forms between the front end of bulge loop, draw point seat and the draw point seat shell, and the bulge loop rear end is provided with steel ball, radially is provided with steel ball motion through hole on the draw point seat shell; Steel ball is arranged in steel ball motion through hole, and the steel ball bottom is against on the draw point seat, and 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 through horizontal guide groove, and 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 is characterized in that: the one side that the bulge loop rear end of said 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 adopt interference fit.
4. torsional mode safety indwelling needle according to claim 1 and 2 is characterized in that: described recovery cylinder is connected through 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 is provided with 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 is provided with 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 |
|---|---|---|---|
| CN2011205747319U CN202478298U (en) | 2011-12-31 | 2011-12-31 | Rotary safe indwelling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205747319U CN202478298U (en) | 2011-12-31 | 2011-12-31 | Rotary safe indwelling needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202478298U true CN202478298U (en) | 2012-10-10 |
Family
ID=46952764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205747319U Withdrawn - After Issue CN202478298U (en) | 2011-12-31 | 2011-12-31 | Rotary safe indwelling needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202478298U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102512729A (en) * | 2011-12-31 | 2012-06-27 | 山东新华安得医疗用品有限公司 | Torsional safety remaining needle |
| CN105596038A (en) * | 2016-01-20 | 2016-05-25 | 珠海维尔康生物科技有限公司 | Medical work sheath assembly and connector |
| CN109091226A (en) * | 2018-09-08 | 2018-12-28 | 北京德康健医药科技有限公司 | A kind of surgical navigational robot end connection method |
-
2011
- 2011-12-31 CN CN2011205747319U patent/CN202478298U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102512729A (en) * | 2011-12-31 | 2012-06-27 | 山东新华安得医疗用品有限公司 | Torsional safety remaining needle |
| CN102512729B (en) * | 2011-12-31 | 2013-07-10 | 山东新华安得医疗用品有限公司 | Torsional safety remaining needle |
| CN105596038A (en) * | 2016-01-20 | 2016-05-25 | 珠海维尔康生物科技有限公司 | Medical work sheath assembly and connector |
| CN105596038B (en) * | 2016-01-20 | 2018-04-10 | 珠海维尔康生物科技有限公司 | Medical work sheath component and connector |
| CN109091226A (en) * | 2018-09-08 | 2018-12-28 | 北京德康健医药科技有限公司 | A kind of surgical navigational robot end connection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121010 Effective date of abandoning: 20130710 |
|
| RGAV | Abandon patent right to avoid regrant |