CN202235388U - Forward press type disposable safe blood taking needle - Google Patents
Forward press type disposable safe blood taking needle Download PDFInfo
- Publication number
- CN202235388U CN202235388U CN2011203273801U CN201120327380U CN202235388U CN 202235388 U CN202235388 U CN 202235388U CN 2011203273801 U CN2011203273801 U CN 2011203273801U CN 201120327380 U CN201120327380 U CN 201120327380U CN 202235388 U CN202235388 U CN 202235388U
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- sliding sleeve
- plane
- closing member
- cylindrical shell
- nook closing
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Abstract
A forward press type disposable safe blood taking needle comprises a shell, a sliding sleeve, a needle core and a spring. The forward press type disposable safe blood taking needle is characterized in that the inner wall of the shell is provided with a first guide slot, a second guide slot and a first inclined surface; the outer wall of the sliding sleeve is provided with guide ribs, a sliding slot and a second inclined surface; a guide wing is arranged at the side part of the needle core, a third inclined surface is arranged on the guide wing, the guide ribs are matched with the first guide slot so as to form axial sliding connection, the sliding slot and the second guide slot from an emitting track side by side; before the emitting, the guide wing is positioned by a concave part formed by the intersection of the second inclined surface and the first inclined surface and in a way that the third inclined surface leans against the second inclined surface, so that the reliable positioning support on the needle core can be provided; in the emitting process, along with the axial sliding of the sliding sleeve relative to the shell, the second inclined surface pushes the needle core by the third inclined surface to compress the spring, simultaneously the second inclined surface pushes the guide wing to climb along the first inclined surface by the third inclined surface until passing over the highest point of the first inclined surface, then the guide wing falls into the emitting track, and further the condition that the need tip is shot in the right center of a blood sampling part can be ensured.
Description
Technical field
This utility model relates to the medical apparatus technical field, particularly a kind of preceding pressure type disposable safe blood taking needle.
Background technology
Disposable automatic safe blood taking needle is the main flow trend of current medical employing utensil development, and this type blood taking needle is always among constantly improving and developing for many years.Chinese patent CN201379576Y has announced a name and has been called " disposable blood taking needle ", and the patent No. is 200920096338.6 utility model patent.The needle interior wall of this patent is provided with the chute that needle body slides, and the chute front end has positioning edge, and needle body one end even is equipped with spring; The needle body other end is fitted with flexible medicated cap, and the needle body front end has lozenges, and flexible medicated cap has angled end-face corresponding with the needle body lozenges; Flexible medicated cap and needle body are positioned at positioning edge one side when installing; When flexible medicated cap was pressed into and promotes needle body and move to the positioning edge end during use, the opposite side that needle body rotates to rib was ejected by spring, and needle point is exposed from the needle tubing front end.Above-mentioned " needle body " is when " nook closing member " in this utility model.The deficiency of this scheme is: there is defective in the design of nook closing member location and trigger mechanism, causes the location of nook closing member unreliable, and emission departs from centermost easily.For this reason, the utility model provides a kind of improved design, to overcome the deficiency of above-mentioned prior art.
Summary of the invention
This utility model provides a kind of preceding pressure type disposable safe blood taking needle, is intended to improve the location and the trigger mechanism of design nook closing member, and solution nook closing member location is unreliable, and emission departs from RC problem easily.
For achieving the above object, the technical scheme that this utility model adopts is: pressure type disposable safe blood taking needle before a kind of comprises shell, sliding sleeve, nook closing member and spring.
Shell is cylinder-shaped, and sliding sleeve is located in the cylindrical shell, and an end of cylindrical shell is an opening; First end of sliding sleeve stretches out and is limited in this opening from the opening of cylindrical shell, and second end of sliding sleeve is positioned at cylindrical shell, and nook closing member is positioned at cylindrical shell; The head of nook closing member is provided with needle point, and the afterbody of nook closing member connects spring.
Said cylinder inboard wall is provided with first gathering sill and second gathering sill vertically; First gathering sill and second gathering sill are in the cylinder inboard wall circumferencial direction layout of being separated by; Cylinder inboard wall between first gathering sill and second gathering sill is provided with locating piece, and locating piece is provided with first inclined-plane towards the end face of the cylindrical shell other end.
Said sliding sleeve is a tube-in-tube structure; The sliding sleeve outer wall is provided with guiding rib vertically; Sliding sleeve is offered sliding tray to first extreme direction vertically since second end; Sliding tray is at outer wall that radially runs through sliding sleeve and inwall, and guiding rib and sliding tray are in the sliding sleeve outer wall circumferencial direction layout of being separated by, and the end face of sliding sleeve second end is provided with second inclined-plane.
Said nook closing member sidepiece is provided with guide vane, and guide vane guides the end face of direction to be provided with the 3rd inclined-plane towards needle point.
Guiding rib on the said sliding sleeve cooperates with first gathering sill on the cylindrical shell, forms with this to be in axial sliding connection; Second gathering sill on sliding tray on the sliding sleeve and the cylindrical shell is arranged side by side, constitutes the launching trajectory that the guiding guide vane slides with this; Under the confined state before emission; Second bevel direction on the sliding sleeve intersects with first bevel direction on the cylindrical shell; Guide vane on the nook closing member is arranged in the recess of said intersection, and wherein the 3rd inclined-plane on the guide vane is parallel with second inclined-plane on the sliding sleeve, and the 3rd inclined-plane is posted by second inclined-plane; In emission process; Along with the relative cylindrical shell of sliding sleeve endwisely slips, second inclined-plane is through the 3rd pushed nook closing member compression spring, simultaneously; Second inclined-plane is also through the 3rd pushed guide vane edge first inclined-plane climbing; Guide vane falls into said launching trajectory behind the peak of crossing first inclined-plane, and this moment, the nook closing member of head band needle point formed shooting under the promotion of spring.
Related content in the technique scheme is explained as follows:
1. in the such scheme, said " shell is cylinder-shaped " can be cylinder, side's tube prismatic shapes.
2. in the such scheme, said " first end of sliding sleeve " and " second end of sliding sleeve " refer to an end and the other end that sliding sleeve is axial respectively.
3. in the such scheme, said " the cylindrical shell other end " refers to the backward end of cartridge openings end.
4. in the such scheme; In order to make sliding sleeve and nook closing member stressed better maintenance balance in the enclosure; Said first gathering sill and second gathering sill be by two compositions, and wherein the centrage of the centrage of first gathering sill and second gathering sill is arranged at cylinder inboard wall circumferencial direction 90 degree of being separated by; Said first inclined-plane is formed by two, and two first inclined-planes are identical in the rotation direction of cylindrical shell circumferencial direction, and the mid point on two first inclined-planes is arranged at cylindrical shell circumferencial direction 180 degree of being separated by; Said guiding rib and sliding tray be by two compositions, and wherein the centrage of the centrage of guiding rib and sliding tray is arranged at sliding sleeve outer wall circumferencial direction 90 degree of being separated by; Said second inclined-plane is formed by two, and two second inclined-planes are identical in the rotation direction of sliding sleeve circumferencial direction, and the mid point on two second inclined-planes is arranged at sliding sleeve circumferencial direction 180 degree of being separated by; Said guide vane is formed by two; The centrage of two guide vanes is arranged at nook closing member circumferencial direction 180 degree of being separated by; Each guide vane is provided with one the 3rd inclined-plane; Two the 3rd inclined-planes are identical in the rotation direction of nook closing member circumferencial direction, and the mid point on two the 3rd inclined-planes is arranged at nook closing member circumferencial direction 180 degree of being separated by.
The principle and the effect of this utility model are: under the confined state before emission, utilize second inclined-plane and first inclined-plane intersect the recess that forms and the 3rd inclined-plane be posted by second inclined-plane and come the positioning and guiding wing, thereby provide reliable localization to support to nook closing member; In emission process; Along with the relative cylindrical shell of sliding sleeve endwisely slips; Second inclined-plane is through the 3rd pushed nook closing member compression spring, and simultaneously, second inclined-plane is also through the 3rd pushed guide vane edge first inclined-plane climbing; Guide vane falls into said launching trajectory behind the peak of crossing first inclined-plane, thereby guarantees the centermost of needle point shooting at blood sampling site.
Description of drawings
Accompanying drawing 1 is this utility model blood taking needle embodiment axonometric chart;
Accompanying drawing 2 is this utility model blood taking needle embodiment three-dimensional exploded view;
Accompanying drawing 3 is the shell axonometric chart among this utility model blood taking needle embodiment;
Accompanying drawing 4 is the inner surface circumferencial direction expanded view of Fig. 3 shell;
Accompanying drawing 5 is the A-A cutaway view of Fig. 4;
Accompanying drawing 6 is the B-B cutaway view of Fig. 4;
Accompanying drawing 7 is the sliding sleeve axonometric chart among this utility model blood taking needle embodiment;
Accompanying drawing 8 is the sliding sleeve front view among this utility model blood taking needle embodiment;
Accompanying drawing 9 is the left view of Fig. 8;
Accompanying drawing 10 is the vertical view of Fig. 8;
Accompanying drawing 11 is nook closing member and the guard bar axonometric chart among this utility model blood taking needle embodiment;
Accompanying drawing 12 is nook closing member and the guard bar front view among this utility model blood taking needle embodiment;
Accompanying drawing 15 is nook closing member and the spring front view among this utility model blood taking needle embodiment;
Accompanying drawing 16 is this utility model nook closing member location and emission principle figure ();
Accompanying drawing 17 is this utility model nook closing member location and emission principle figure (two);
Accompanying drawing 18 is this utility model nook closing member location and emission principle figure (three);
Accompanying drawing 19 is this utility model nook closing member location and emission principle figure (four).
In the above accompanying drawing: 1. shell; 2. end cap; 3. sliding sleeve; 4. nook closing member; 5. spring; 6. safety helmet; 7. needle point; 8. guard bar; 9. first gathering sill; 10. second gathering sill; 11. locating piece; 12. first inclined-plane; 13. guiding rib; 14. sliding tray; 15. second inclined-plane; 16. guide vane; 17. the 3rd inclined-plane; 18. needle outlet.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment this utility model is further described:
Embodiment: pressure type disposable safe blood taking needle before a kind of
Like accompanying drawing 1, shown in Figure 2, this blood taking needle is made up of shell 1, end cap 2, sliding sleeve 3, nook closing member 4, spring 5, safety helmet 6 and guard bar 8.
Like Fig. 3 ~ shown in Figure 6; Shell 1 cylinder inboard wall is provided with two first gathering sills 9 and two second gathering sills 10 vertically; Wherein the centrage of the centrage of first gathering sill 9 and second gathering sill 10 is arranged at cylinder inboard wall circumferencial direction 90 degree of being separated by, and makes a pair of first gathering sill 9 on the cylinder inboard wall cross section, be cross-shaped with a pair of second gathering sill 10.Cylinder inboard wall is provided with two locating pieces 11, and each locating piece is all between first gathering sill 9 and second gathering sill 10, and the center of two locating pieces 11 is arranged at cylindrical shell circumferencial direction 180 degree of being separated by.It is identical in the rotation direction of cylindrical shell circumferencial direction that each locating piece 11 is provided with 12, two first inclined-planes 12, first inclined-plane towards the end face of the cylindrical shell other end, and the mid point on two first inclined-planes 12 is arranged at cylindrical shell circumferencial direction 180 degree of being separated by.
Shown in Fig. 7 ~ 10, sliding sleeve 3 is a tube-in-tube structure, and sliding sleeve 3 outer walls are provided with two guiding ribs 13 vertically, and sliding sleeve 3 is offered two sliding trays 14 to first extreme direction vertically since second end, and each sliding tray 14 is at the outer wall and the inwall that radially all run through sliding sleeve 3.The centrage of the centrage of guiding rib 13 and sliding tray 14 is arranged at sliding sleeve 3 outer wall circumferencial directions 90 degree of being separated by, is made a pair of guiding rib 13 on sliding sleeve 3 cross sections, be cross-shaped with a pair of sliding tray 14.It is identical in the rotation direction of sliding sleeve 3 circumferencial directions that the end face of sliding sleeve 3 second ends is provided with 15, two second inclined-planes 15, two second inclined-planes, and the mid point on two second inclined-planes 15 is arranged at sliding sleeve 3 circumferencial directions 180 degree of being separated by.First end of sliding sleeve 3 is provided with needle outlet 18.
Shown in Figure 11 ~ 15, the head of nook closing member 4 is provided with needle point 7, is with guard bar 8 on the needle point 7, and the afterbody of nook closing member 4 connects spring 5 (seeing Figure 15).The centrage that nook closing member 4 sidepieces are provided with 16, two guide vanes 16 of two guide vanes is arranged at nook closing member 4 circumferencial directions 180 degree of being separated by.It is identical in the rotation direction of nook closing member 4 circumferencial directions that each guide vane 16 guides the end face of directions to be provided with 17, two the 3rd inclined-planes 17, one the 3rd inclined-plane towards needle point 7, and the mid point on two the 3rd inclined-planes 17 is arranged at nook closing member 4 circumferencial directions 180 degree of being separated by.
Under confined state, the guiding rib 13 on the sliding sleeve 3 cooperates with first gathering sill 9 on the cylindrical shell, forms with this to be in axial sliding connection.Sliding tray 14 on the sliding sleeve 3 is arranged side by side with second gathering sill 10 on the cylindrical shell, constitutes the launching trajectory that guiding guide vane 16 slides with this.
Figure 16 representes sliding sleeve 3, guide vane 16 and the released state of locating piece 11 threes before assembling; Figure 17 representes the state before sliding sleeve 3, guide vane 16 and locating piece 11 threes extremely launch after assembling; Figure 18 representes sliding sleeve 3, guide vane 16 and the transitive state of locating piece 11 threes before emission; Figure 19 representes sliding sleeve 3, guide vane 16 and locating piece 11 threes' emission state.As can be seen from Figure 17; Under the confined state before emission; Second inclined-plane, 15 directions on the sliding sleeve 3 are intersected with first inclined-plane, 12 directions on the cylindrical shell; Guide vane 16 on the nook closing member 4 is arranged in the recess of said intersection, and wherein the 3rd inclined-plane 17 on the guide vane 16 is parallel with second inclined-plane 15 on the sliding sleeve 3, and the 3rd inclined-plane 17 is posted by second inclined-plane 15.When using blood taking needle, will twist through the guard bar 8 that safety helmet 6 will be enclosed within on the needle point 7 earlier, sliding sleeve 3 first ends that hand-held then blood taking needle also will stretch out shell 1 cartridge openings end are aimed at the human blood collection position and are pushed downwards.As can be seen from Figure 18, in emission process, along with sliding sleeve 3 relative cylindrical shells endwisely slip; Second inclined-plane 15 promotes nook closing member 4 compression springs 5 through the 3rd inclined-plane 17; Simultaneously, second inclined-plane 15 also promotes guide vane 16 through the 3rd inclined-plane 17 and climbs along first inclined-plane 12, and guide vane 16 falls into said launching trajectory (seeing Figure 19) behind the peak of crossing first inclined-plane 12; This moment, the nook closing member 4 of head band needle point 7 formed shooting under the promotion of spring 5.
In the present embodiment; The quantity on first gathering sill 9, second gathering sill 10, locating piece 11, first inclined-plane 12, guiding rib 13, sliding tray 14, second inclined-plane 15, guide vane 16 and the 3rd inclined-plane 17 is two; But these structures quantitatively adopt two not necessarily, and at least one gets final product in theory.Quantitatively use two and to adopt the design one of symmetric arrangement be in order to make sliding sleeve and nook closing member stressed better maintenance balance in the enclosure, the 2nd, simple in structure.As long as one or three or four of the good employing of size and tolerance control also is feasible.In other words, quantitatively use two and to adopt the design of symmetric arrangement be preferred plan.
The foregoing description only is the technical conceive and the characteristics of explanation this utility model, and its purpose is to let the personage who is familiar with this technology can understand content of this utility model and enforcement according to this, can not limit the protection domain of this utility model with this.All equivalences of being done according to this utility model spirit change or modify, and all should be encompassed within the protection domain of this utility model.
Claims (2)
1. pressure type disposable safe blood taking needle before a kind comprises shell (1), sliding sleeve (3), nook closing member (4) and spring (5);
Shell (1) is cylinder-shaped, and sliding sleeve (3) is located in the cylindrical shell, and an end of cylindrical shell is an opening, and first end of sliding sleeve (3) stretches out and is limited in this opening from the opening of cylindrical shell, and second end of sliding sleeve (3) is positioned at cylindrical shell; Nook closing member (4) is positioned at cylindrical shell, and the head of nook closing member (4) is provided with needle point (7), and the afterbody of nook closing member (4) connects spring (5);
It is characterized in that:
Said cylinder inboard wall is provided with first gathering sill (9) and second gathering sill (10) vertically; First gathering sill (9) and second gathering sill (10) are in the cylinder inboard wall circumferencial direction layout of being separated by; Cylinder inboard wall between first gathering sill (9) and second gathering sill (10) is provided with locating piece (11), and locating piece (11) is provided with first inclined-plane (12) towards the end face of the cylindrical shell other end;
Said sliding sleeve (3) is a tube-in-tube structure; Sliding sleeve (3) outer wall is provided with guiding rib (13) vertically; Sliding sleeve (3) is offered sliding tray (14) to first extreme direction vertically since second end; Sliding tray (14) is at the outer wall and the inwall that radially run through sliding sleeve (3), and guiding rib (13) and sliding tray (14) are in sliding sleeve (3) the outer wall circumferencial direction layout of being separated by, and the end face of sliding sleeve (3) second ends is provided with second inclined-plane (15);
Said nook closing member (4) sidepiece is provided with guide vane (16), and guide vane (16) guides the end face of direction to be provided with the 3rd inclined-plane (17) towards needle point (7);
Guiding rib (13) on the said sliding sleeve (3) cooperates with first gathering sill (9) on the cylindrical shell, forms with this to be in axial sliding connection; Sliding tray (14) on the sliding sleeve (3) is arranged side by side with second gathering sill (10) on the cylindrical shell, constitutes the launching trajectory that guiding guide vane (16) slides with this; Under the confined state before emission; Second inclined-plane (15) direction on the sliding sleeve (3) is intersected with first inclined-plane (12) direction on the cylindrical shell; Guide vane (16) on the nook closing member (4) is arranged in the recess of said intersection; Wherein the 3rd inclined-plane (17) on the guide vane (16) is parallel with second inclined-plane (15) on the sliding sleeve (3), and the 3rd inclined-plane (17) are posted by second inclined-plane (15); In emission process; Along with the relative cylindrical shell of sliding sleeve (3) endwisely slips, second inclined-plane (15) promote nook closing member (4) compression spring (5) through the 3rd inclined-plane (17), simultaneously; Second inclined-plane (15) also promotes guide vane (16) through the 3rd inclined-plane (17) and climbs along first inclined-plane (12); Guide vane behind the peak of crossing first inclined-plane (12) (16) falls into said launching trajectory, and this moment, the nook closing member (4) of head band needle point (7) formed shooting under the promotion of spring (5).
2. blood taking needle according to claim 1; It is characterized in that: said first gathering sill (9) and second gathering sill (10) be by two compositions, and wherein the centrage of the centrage of first gathering sill (9) and second gathering sill (10) is arranged at cylinder inboard wall circumferencial direction 90 degree of being separated by; Said first inclined-plane (12) is formed by two, and two first inclined-planes (12) are identical in the rotation direction of cylindrical shell circumferencial direction, and the mid point on two first inclined-planes (12) is arranged at cylindrical shell circumferencial direction 180 degree of being separated by; Said guiding rib (13) and sliding tray (14) be by two compositions, and wherein the centrage of the centrage of guiding rib (13) and sliding tray (14) is arranged at sliding sleeve (3) outer wall circumferencial direction 90 degree of being separated by; Said second inclined-plane (15) is formed by two, and two second inclined-planes (15) are identical in the rotation direction of sliding sleeve (3) circumferencial direction, and the mid point on two second inclined-planes (15) is arranged at sliding sleeve (3) circumferencial direction 180 degree of being separated by; Said guide vane (16) is formed by two; The centrage of two guide vanes (16) is arranged at nook closing member (4) circumferencial direction 180 degree of being separated by; Each guide vane (16) is provided with one the 3rd inclined-plane (17); Two the 3rd inclined-planes (17) are identical in the rotation direction of nook closing member (4) circumferencial direction, and the mid point on two the 3rd inclined-planes (17) is arranged at nook closing member (4) circumferencial direction 180 degree of being separated by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203273801U CN202235388U (en) | 2011-09-02 | 2011-09-02 | Forward press type disposable safe blood taking needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203273801U CN202235388U (en) | 2011-09-02 | 2011-09-02 | Forward press type disposable safe blood taking needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202235388U true CN202235388U (en) | 2012-05-30 |
Family
ID=46096705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203273801U Withdrawn - After Issue CN202235388U (en) | 2011-09-02 | 2011-09-02 | Forward press type disposable safe blood taking needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202235388U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102309331A (en) * | 2011-09-02 | 2012-01-11 | 苏州乔阳医学科技有限公司 | Forwards pressed disposable safe blood taking needle |
| CN113476044A (en) * | 2021-07-02 | 2021-10-08 | 天津云帆医疗器械有限公司 | Safety blood taking needle |
-
2011
- 2011-09-02 CN CN2011203273801U patent/CN202235388U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102309331A (en) * | 2011-09-02 | 2012-01-11 | 苏州乔阳医学科技有限公司 | Forwards pressed disposable safe blood taking needle |
| CN102309331B (en) * | 2011-09-02 | 2013-04-17 | 苏州乔阳医学科技有限公司 | Forward press disposable safe blood taking needle |
| CN113476044A (en) * | 2021-07-02 | 2021-10-08 | 天津云帆医疗器械有限公司 | Safety blood taking needle |
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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: 20120530 Effective date of abandoning: 20130417 |
|
| RGAV | Abandon patent right to avoid regrant |