CN205055047U - Syringe needle automatic retraction formula safety venous transfusion needle - Google Patents
Syringe needle automatic retraction formula safety venous transfusion needle Download PDFInfo
- Publication number
- CN205055047U CN205055047U CN201520653053.3U CN201520653053U CN205055047U CN 205055047 U CN205055047 U CN 205055047U CN 201520653053 U CN201520653053 U CN 201520653053U CN 205055047 U CN205055047 U CN 205055047U
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- CN
- China
- Prior art keywords
- needle
- housing
- hub body
- intravenous infusion
- strip
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model relates to a syringe needle automatic retraction formula safety venous transfusion needle, its characteristic includes the needle file main part and is located the syringe needle installation department of needle file main part front end, the flexible connectors that needle file main part both sides were equipped with the slider and were formed to front end outside extension by the slider, flexible connectors's front end is equipped with needle file locking device and handheld unblock operating portion horizontal with the casing and vertical block, needle file main part front end is equipped with spring mounting portion, and the rear end is equipped with the pipe connection portion that is connected with the transfer line, be equipped with in the pipe connection portion and prevent the palirrhea relief valve of liquid. The casing is the flat tetragonal body structure of a rectangular shape, the casing closes formation by last casing and inferior valve body group, the casing both sides are equipped with rectangular shape opening, spout and the block structure corresponding with needle file locking device, handheld unblock operating portion is located rectangular shape opening and can follows opening axial displacement. The utility model discloses rational in infrastructure, function and usage are various, and easy operation is convenient. This product provides safety protection not only for simultaneously medical staff and patient, still can avoid environmental pollution and possible secondary damage, realizes that safety ring protects.
Description
Technical field
This utility model relates to the technical field of medical apparatus and instruments, specifically a kind of needle automatic retracting formula safe intravenous infusion needle.
Background technology
Vein blood taking needle and venoclysis needle are that medical institutions are the most frequently used, use the most general medical disposable material.Traditional vein blood taking needle and transfusion needle many employings single-blade or double fins needle stand structure, this kind of needle stand structure uses inconvenient, uses outside rear syringe needle is exposed to, is easy to cause accidental needle sticks to hinder and environmental pollution.Pricking wound and the cross infection caused thus are safety and health problems of the numerous medical workers of long-standing problem; Use rear contaminated syringe needle outside exposed, be easy to cause secondary injury and cross infection.
In order to solve upper problem, research staff is updating always and is researching and developing the safety protection structure of New intravenous blood taking needle and venoclysis needle.Existing available safe vein blood taking needle and safe intravenous infusion needle kind few, use inconvenient and expensive, most product structure and function are all further improved to reach effective security protection and the universal object used.
Summary of the invention
The purpose of this utility model is to provide a kind of needle automatic retracting formula safe intravenous infusion needle, and its main feature comprises: 1) product design design adopts long strip type flat structure, and volume is little, easy to use.Housing adopts flat appearance structure to have two large advantages at least: one is facilitate the hand-held operation of medical worker to use, two is conveniently be fixed on patient's the back of the hand stably by transfusion needle, the function that the single-blade of this design traditional vein blood taking needle of replacement and transfusion needle or double fins are fixed as hand-held and syringe needle; 2) syringe needle installation portion and needle hub body adopt eccentric dislocation to be connected, and this kind of structure can make needle tubing more press close to patient body skin, to the sensation of patient's safety and comfort more; 3) adopt the two-way snap lock in housing both sides and Bidirectional unlocking operation, increase stability and the safety of needle stand locking, improve convenience and the comfort of user operation; After infusion terminates, needle stand unlocks by the hand-held unlocking operation portion of pressing housing both sides, and needle stand and needle tubing can automatically retract in housing by spring, and medical worker can be prevented to be hindered by accidental needle sticks and cause cross infection; 4) be provided with the relief valve preventing liquid reflux in needle hub body, to prevent from occurring unexpected liquid reflux in infusion process, patient damaged; 5) product structure is ingenious, reasonable, applied range, both may be used for venous transfusion, blood transfusion also may be used for venous blood collection, is applicable to penetration and promotion.
To achieve these goals, the technical solution of the utility model is: a kind of needle automatic retracting formula safe intravenous infusion needle, it comprises housing and is positioned at the needle stand of housing, it is characterized in that: described needle stand comprises needle hub body and is positioned at the syringe needle installation portion of needle hub body front end; Described needle hub body both sides are respectively provided with a slide block, described slide block be connected outside needle hub body and extend to form a Flexible Connector outside the forward end of syringe needle installation portion axle center; The front end of described Flexible Connector is provided with the needle stand locking device that engage horizontal and vertical with housing, and the outside of this needle stand locking device is provided with the hand-held unlocking operation portion for engagement release; Between two-side elastic connector, form spring mountings with syringe needle installation portion outer wall place, needle hub body rear portion forms a pipe connection portion, and this pipe connection portion is used for being connected with tube for transfusion;
Described housing is a strip quad flat body structure; Housing is combined to form by upper shell and lower house; Upper shell offers with the obverse both sides of lower house the upper hopper chute matched with needle stand locking device; The both sides that lower house is corresponding with upper shell offer the gliding groove matched with needle stand locking device; Casing center is provided with the strip cavity matched with needle hub body; The front end of this strip cavity is provided with the perforate matched with syringe needle installation portion, and the rear end of this strip cavity is provided with the opening be in communication with the outside; The both sides of this strip cavity form by upper-lower casing cooperation the strip opening be in communication with the outside, and described strip opening is connected with strip cavity; Above-mentioned hand-held unlocking operation portion is positioned at described strip opening, and this hand-held unlocking operation portion can slide axially in strip opening;
Described spring mountings place is provided with a spring.
The utility model discloses a kind of needle automatic retracting formula safe intravenous infusion needle, its main feature is grown up by housing design bar shaped quad flat body structure and other 26S Proteasome Structure and Functions various of extending thus.This kind of contour structures both person easy to use hand-held when injecting puncture uses, and is stablized by transfusion needle comfortable to be fixed on patient body skin when facilitating again infusion; Utilize the chute of housing both sides and the slide block of needle stand both sides and locking device, between housing and needle stand, realize the two-way snap lock of housing both sides, unblock and slip, greatly improve the stability of product and the convenience of safety and use and comfort; .After infused, the hand-held unlocking operation portion of pressing housing both sides, remove the locking between needle stand and housing, needle stand and needle tubing can bounce back in the elongated cavity of housing rapidly by the spring of needle stand front end; When needle stand bounces back to the afterbody of housing elongated cavity, the locking device of needle stand can engage with the depressed part of housing both sides chute afterbody and realize backward hold, can effectively prevent syringe needle from exposing or syringe needle again to be released housing outer and cause the risk of unexpected injury.Misplace to be connected with the bias between needle hub body owing to adopting syringe needle installation portion and design; entry needle can be made more to press close to the body skin of patient to avoid needle sting blood vessel, improve the safeguard protection to patient and comfort, therefore; this product both can be used for venous transfusion, can be used for again venous transfusion and blood sampling.This product is provided with the relief valve of liquidproof reflux in needle hub body portion, this relief valve and needle safety defencive function ingenious, be organically integrated, improve the dual security protection function to numerous medical workers and patient greatly.
Accompanying drawing explanation
Fig. 1 is internal structure schematic diagram of the present utility model.
Fig. 2 is side view of the present utility model.
Fig. 3 is this utility model external structure schematic diagram.
Fig. 4 is the state diagram of this utility model final utilization.
Fig. 5 is the relief valve assembly structure schematic diagram in needle stand.
Fig. 6 is needle stand structure schematic diagram.
Fig. 7 is needle stand side view.
Fig. 8 is needle stand end construction schematic diagram.
Fig. 9 is upper shell external structure schematic diagram.
Figure 10 is upper shell internal structure schematic diagram.
Figure 11 is upper shell side view.
Figure 12 is lower house external structure schematic diagram.
Figure 13 is lower house internal structure schematic diagram.
Figure 14 is lower house side view.
Figure comprises:
1, housing;
2, needle stand;
3, needle hub body;
4, syringe needle installation portion;
5, slide block
6, Flexible Connector;
7, needle stand locking device;
8, hand-held unlocking operation portion;
9, spring mountings;
10, pipe connection portion;
11, tube for transfusion;
12, upper shell;
13, lower house;
14, upper hopper chute;
15, gliding groove;
16, strip cavity;
17, perforate;
18, opening;
19, strip opening;
20, spring;
21, upper protruding block;
22, lower protruding block;
23, longitudinal projection;
24, dislocation connects;
25, reinforcement;
26, relief valve;
27, convex tendon;
28, conical plug cavity;
29, circular step;
30, conical plug;
31, lead chute wall;
32, horizontal cut;
33, longitudinal breach;
34, breach;
35, depressed part.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model will be further described.
A kind of needle automatic retracting formula safe intravenous infusion needle, it comprises housing 1 and is positioned at the needle stand 2 of housing, and it is different from prior art and is: described needle stand comprises needle hub body 3 and is positioned at the syringe needle installation portion 4 of needle hub body front end; This syringe needle installation portion is for assembling needle tubing; Above-mentioned needle hub body both sides are respectively provided with a slide block 5, described slide block be connected outside needle hub body and extend to form a Flexible Connector 6 outside the forward end of syringe needle installation portion axle center; The front end of this Flexible Connector is provided with the needle stand locking device 7 that engage horizontal and vertical with housing, and the outside of this needle stand locking device is provided with the hand-held unlocking operation portion 8 for engagement release; Between two-side elastic connector, form spring mountings 9 with syringe needle installation portion outer wall place, this spring mountings 9 is for socket and fixing spring; Needle hub body rear portion forms a pipe connection portion 10, and this pipe connection portion is used for being connected with tube for transfusion 11;
Described housing is a strip quad flat body structure, and this kind of structure be handled easily personnel hand-held but also contribute to increasing stability and the comfort that needle stand is fixed on patient skin surface when puncturing not only; Housing is combined to form by upper shell 12 and lower house 13, this product time to select scheme time, housing also can have before and after front end shell and rear end housing and is assembled; Upper shell offers with the obverse both sides of lower house the upper hopper chute 14 matched with needle stand locking device; The both sides that lower house is corresponding with upper shell offer the gliding groove 15 matched with needle stand locking device; Casing center is provided with the strip cavity 16 matched with needle hub body; The upper wall of this strip cavity and lower wall form the arc surface coordinated with needle hub body outer wall, and the front end of this strip cavity is provided with the perforate 17 matched with syringe needle installation portion, and the aperture of described perforate coordinates with syringe needle installation portion crest clearance; The rear end of this strip cavity is provided with the opening 18 be in communication with the outside; This opening is the assembly connection passage of tube for transfusion and pipe connection portion; The both sides of this strip cavity form by upper-lower casing cooperation the strip opening 19 be in communication with the outside, and described strip opening is connected with strip cavity; The hand-held unlocking operation portion of above-mentioned needle stand is positioned at described strip opening, and this hand-held unlocking operation portion slides axially in strip opening;
Described spring mountings place is provided with a spring 20.
In the specific implementation, described needle stand locking device comprises the upper protruding block matched with upper hopper chute 21 and the lower protruding block matched with gliding groove 22; Upper protruding block top is also provided with the longitudinal projection 23 that be connected in perpendicular shape with upper protruding block, and the upper lower protruding block of symmetrical distribution helps and the stability and the guide effect of needle hub body in sliding process that promote needle stand and housing snap lock.
In the specific implementation; described syringe needle installation portion with needle hub body inner space and the side that needle hub body axle center is partial in the axle center of syringe needle installation portion formed to misplace and be connected 24; adopt dislocation connection that needle tubing can be made more to press close to patient body skin; minimizing needle tubing and needle hub body are connected to form oblique angle and may cause accidental injury to patient vessel to greatest extent, improve the safety protection function to patient and comfort.
In the specific implementation, the spring fitting place of described syringe needle installation portion outer wall is provided with the reinforcement 25 of axial distribution, and the outer wall of reinforcement described in spring overcoat and syringe needle installation portion during installation, the external diameter that this reinforcement is formed matches with spring inside diameter.
In the specific implementation, described needle hub body pipe connection portion inner chamber leading portion is provided with the relief valve 26 that prevents liquid reflux.Described relief valve comprises the conical plug cavity 28 being arranged on the ring-shaped distributed convex tendon 27 in needle hub body pipe connection portion inner chamber leading portion inwall place and being positioned at inside annular distribution convex tendon; One end of annular distribution convex tendon forms a circular step 29; Tube for transfusion one end to be assemblied in pipe connection portion and to connect with above-mentioned circular step; A conical plug 30 is provided with in described conical plug cavity; The cone tip part external diameter of this conical plug is less than the internal diameter of tube for transfusion and points to tube for transfusion one end open place; In infusion process, when occurring liquid reflux, the cone tip part being suspended in the conical plug in relief valve conical plug cavity is pushed to tube for transfusion opening part and closed conduct opening by by the liquid of reflux, can effectively stop liquid reflux, increase the safeguard protection to patient.
In the specific implementation, the upper hopper chute front end external groove sidevall of described upper shell both sides arranges a guiding chute wall 31 tilted to the inside, the front end of described guiding chute wall arranges a horizontal cut 32, in guiding chute wall front end near bottom land place, offer the longitudinal breach 33 that be communicated with in perpendicular shape with horizontal cut;
In the specific implementation, the bottom land place of described upper hopper chute front end offers a breach 34, and this breach is communicated with longitudinal breach with above-mentioned horizontal cut; Above-mentioned horizontal cut and longitudinal breach coordinate with longitudinal projection at needle stand upper protruding block and top, form horizontal and vertical snap lock.
In the specific implementation, described upper shell and the lateral wall of lower house runner rear end are equipped with the depressed part 35 be communicated with gliding groove with upper hopper chute, when needle stand by spring retraction to strip tail of cavity body time, upper protruding block and the lower protruding block of this depressed part and above-mentioned needle stand locking device coordinate, form reverse snap lock, again released outside housing to prevent needle stand and needle tubing.
In the specific implementation, described housing forward end outer wall narrows to the inside; When hand-held unlocking operation portion is positioned at housing forward end, hand-held unlocking operation portion is exposed to outside above-mentioned strip opening, operator presses hand-held unlocking operation portion to the inside, needle stand and realize unlocking with housing, and needle stand can be retracted to the afterbody of strip cavity by spring automatically that be installed on needle stand front end; When needle stand is positioned at housing rear end, hand-held portion is then positioned at described strip opening, increases syringe needle surprisingly released the risk of housing to prevent touching.
This product is when original state, and needle stand is installed in housing forward end and realizes the stable snap lock with housing by needle stand locking device; Needle tubing and needle tubing overcoat are exposed to housing forward end; Hand-held unlocking operation portion road is for housing forward end both sides; The hand-holdable housing of operator carries out puncturing and utilizes housing to be fixed on by transfusion needle on patient body skin; After transfusion or blood sampling terminate, operator can the hand-held unlocking operation portion of singlehanded pressing housing forward end both sides, and needle stand and needle tubing can by automatic retracted in housings; When needle stand is retracted into housing afterbody, needle stand locking device can realize snap lock with the clamping close device of housing afterbody again, prevents syringe needle from again being released outside housing; Simple to operate, easy to use.
Above content is the further description done this utility model patent in conjunction with concrete preferred implementation, can not assert that this utility model patent is specifically implemented to be confined to these explanations above-mentioned.For this utility model person of an ordinary skill in the technical field, under the prerequisite not departing from this utility model inventional idea, some simple deduction or replace can also be made, all should be considered as belonging to protection domain of the present utility model.
Claims (10)
1. a needle automatic retracting formula safe intravenous infusion needle, it comprises housing (1) and is positioned at the needle stand (2) of housing, it is characterized in that: described needle stand comprises needle hub body (3) and is positioned at the syringe needle installation portion (4) of needle hub body front end; Above-mentioned needle hub body both sides are respectively provided with a slide block (5), described slide block be connected outside needle hub body and extend to form a Flexible Connector (6) outside the forward end of syringe needle installation portion axle center; The front end of described Flexible Connector is provided with the needle stand locking device (7) that engage horizontal and vertical with housing, and the outside of this needle stand locking device is provided with the hand-held unlocking operation portion (8) for engagement release; Between two-side elastic connector, form spring mountings (9) with syringe needle installation portion outer wall place, needle hub body rear portion forms pipe connection portion (10), and this pipe connection portion is used for being connected with tube for transfusion (11);
Described housing is a strip quad flat body structure; Housing is combined to form by upper shell (12) and lower house (13); Upper shell and the obverse both sides of lower house offer the upper hopper chute (14) matched with needle stand locking device; The both sides that lower house is corresponding with upper shell offer the gliding groove (15) matched with needle stand locking device; Casing center is provided with the strip cavity (16) matched with needle hub body; The front end of this strip cavity is provided with the perforate (17) matched with syringe needle installation portion, and the rear end of this strip cavity is provided with the opening (18) be in communication with the outside; The both sides of this strip cavity form by upper-lower casing cooperation the strip opening (19) be in communication with the outside, and described strip opening is connected with strip cavity; The hand-held unlocking operation portion of above-mentioned needle stand is positioned at described strip opening, and this hand-held unlocking operation portion can slide axially in strip opening;
Described spring mountings place is provided with a spring (20).
2. a kind of needle automatic retracting formula safe intravenous infusion needle according to claim 1, is characterized in that: described needle stand locking device comprises a upper protruding block matched with upper hopper chute (21) and a lower protruding block matched with gliding groove (22); Upper protruding block top is also provided with the longitudinal projection (23) that be connected in perpendicular shape with upper protruding block.
3. a kind of needle automatic retracting formula safe intravenous infusion needle according to claim 1, is characterized in that: described syringe needle installation portion with needle hub body inner space and the side that needle hub body axle center is partial in the axle center of syringe needle installation portion formed to misplace and be connected (24).
4. a kind of needle automatic retracting formula safe intravenous infusion needle according to claim 1, is characterized in that: the spring fitting place of described syringe needle installation portion outer wall is provided with the reinforcement (25) of axial distribution, and the external diameter that this reinforcement is formed matches with spring inside diameter.
5. a kind of needle automatic retracting formula safe intravenous infusion needle according to claim 1, is characterized in that: described needle hub body pipe connection portion inner chamber leading portion is provided with the relief valve (26) that prevents liquid reflux.
6. a kind of needle automatic retracting formula safe intravenous infusion needle according to claim 5, is characterized in that: described relief valve comprises the conical plug cavity (28) being arranged on the ring-shaped distributed convex tendon in needle hub body pipe connection portion inner chamber leading portion inwall place (27) and being positioned at inside annular distribution convex tendon; One end of annular distribution convex tendon forms a circular step (29); Tube for transfusion one end to be assemblied in pipe connection portion and to connect with above-mentioned circular step; The conical plug (30) of one one-tenth suspension is provided with in described conical plug cavity; The cone tip part of this conical plug points to tube for transfusion one end open place.
7. a kind of needle automatic retracting formula safe intravenous infusion needle according to claim 1, it is characterized in that: the upper hopper chute front end external groove sidevall of described upper shell both sides arranges an intilted guiding chute wall (31), the front end of described guiding chute wall arranges a horizontal cut (32), in guiding chute wall front end near bottom land place, offer the longitudinal breach (33) that be communicated with in perpendicular shape with horizontal cut.
8. a kind of needle automatic retracting formula safe intravenous infusion needle according to claim 7, is characterized in that: the bottom land place of described upper hopper chute front end offers a breach (34), and this breach is communicated with longitudinal breach with above-mentioned horizontal cut; Above-mentioned horizontal cut and longitudinal breach coordinate with longitudinal projection at needle stand upper protruding block and top thereof, can form horizontal and vertical snap lock.
9. a kind of needle automatic retracting formula safe intravenous infusion needle according to claim 1, it is characterized in that: described upper shell and the outside of the rear end of lower house both sides chute are equipped with the depressed part (35) be communicated with gliding groove with upper hopper chute, upper protruding block and the lower protruding block of this depressed part and above-mentioned needle stand locking device coordinate, and form reverse snap lock structure.
10. a kind of needle automatic retracting formula safe intravenous infusion needle according to claim 1, is characterized in that: described housing forward end lateral wall is narrowed to the inside; When hand-held unlocking operation portion is positioned at front housing section, hand-held unlocking operation portion is exposed to outside above-mentioned strip opening; When hand-held portion is positioned at housing back segment, be then positioned at described strip opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520653053.3U CN205055047U (en) | 2015-08-27 | 2015-08-27 | Syringe needle automatic retraction formula safety venous transfusion needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520653053.3U CN205055047U (en) | 2015-08-27 | 2015-08-27 | Syringe needle automatic retraction formula safety venous transfusion needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205055047U true CN205055047U (en) | 2016-03-02 |
Family
ID=55381658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520653053.3U Expired - Fee Related CN205055047U (en) | 2015-08-27 | 2015-08-27 | Syringe needle automatic retraction formula safety venous transfusion needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205055047U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106474593A (en) * | 2015-08-27 | 2017-03-08 | 王祖扬 | A kind of needle automatic retracting formula safe intravenous infusion needle |
-
2015
- 2015-08-27 CN CN201520653053.3U patent/CN205055047U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106474593A (en) * | 2015-08-27 | 2017-03-08 | 王祖扬 | A kind of needle automatic retracting formula safe intravenous infusion needle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160302 Termination date: 20170827 |