CN108937961B - A kind of hemostix spring tail portion elastic dilatation latching structure - Google Patents
A kind of hemostix spring tail portion elastic dilatation latching structure Download PDFInfo
- Publication number
- CN108937961B CN108937961B CN201810856278.7A CN201810856278A CN108937961B CN 108937961 B CN108937961 B CN 108937961B CN 201810856278 A CN201810856278 A CN 201810856278A CN 108937961 B CN108937961 B CN 108937961B
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- China
- Prior art keywords
- deck
- spring
- slot hole
- long slot
- tail portion
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150206—Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
Abstract
A kind of hemostix spring tail portion elastic dilatation latching structure, including shell and spring, it is characterized by: the cylinder back-end of shell is equipped with deck, the side wall of deck is equipped with block tongue, in its natural state, the distance that inserts of block tongue top and opposite deck side wall is less than spring diameter, and the bottom wall of deck is equipped with long slot hole, which is divided into deck and is made of at least two valve pedestals.In the assembled condition, after having the expansion pin insertion long slot hole of a wedge shape on installation station, deck is forced to be expanded in radial elastic, when distance can be inserted more than or equal to spring diameter, spring tail portion is fallen into deck, and when shell and spring withdraw the installation station, deck is in radial elastic shrinkage, block tongue is caught in the gap of spring tail portion, by spring tail portion clamping lock on deck.This programme can be fitted into mechanization and Automated assembly requirement in clamping part when efficiently solving spring-compressed to half stroke.
Description
Technical field
The present invention relates to Medical blood sampling equipment field, in particular to a kind of disposable blood taking device of included ejection mechanism is (also
Claim " blood taking needle ").This hemostix can by shell tail portion elastic dilatation come clamping lock flexible tail, its main feature is that: both can be with
Housing and tail-hood are combined as a whole, the requirement of spring tail portion fixed clamp when saving a part, and can satisfy assembling.
Background technique
Disposable blood taking device carries blood taking needle and ejection mechanism, and it is small in size with its, using safe, easy to operate for characteristic
It is deep to be welcome by medical staff and patient.It is largely used in each medical institutions and diabetic for many years.
Typical disposable blood taking device is usually made of push away hair device, needle core, spring, housing and tail-hood.In industrial mass
Amount production in, except spring and in addition to other components be injection-moulded plastic part, by mold injection molding, finally pass through semi-mechanization again
Or full automatic mechanical product line group dresses up product.But in hemostix manufacturing field, due to being required in assembling process
It (is not that spring is all just packed into clamping after compression that spring tail portion, which should be just fitted into respective clamp portion, when spring-compressed is to half stroke
In portion, and spring-compressed to half stroke when still in soft condition), this is the requirement of motorization assembly.It limits in this way
The fixed form of spring tail portion, for example not can guarantee the reliability that spring assembles usually using structures such as tight fit and grabs.
Chinese patent CN202654134U bulletin authorizes the utility model patent of one entitled " hemostix bottom cover ".It should
Patent specially designs the structure for having spring clip to solve the problems, such as that spring tail portion grips on the bottom cover of blood taking needle.But
There are still following deficiencies in practical applications: 1. designs combined with bottom cover (tail-hood) assembly using syringe (housing), wherein needle
Cylinder and bottom cover are two parts, are manufactured by two secondary molds, amount of parts is more；2. structure is complicated for bottom cover, lead to mold
Structure is complicated, at high cost；3. the reliability of spring tail portion indentation clamping part is difficult to ensure in mechanization and automatic assembling.
For this purpose, how to solve above-mentioned technical problem, it is simple to design a kind of not only structure, but also convenient for the spring tail portion clamping lock of assembly
The problem of structure is those skilled in the art's concern.
Summary of the invention
In view of above the shortcomings of the prior art, the present invention provides a kind of hemostix spring tail portion elastic dilatation clamping lock knot
Structure, its purpose is to solve that asking for clamping part can be packed into when spring is compressed to half stroke in mechanization and automatic assembling
Topic.
In order to achieve the above objectives, the technical solution adopted by the present invention is that: a kind of hemostix spring tail portion elastic dilatation clamping lock
Structure, including shell and spring, innovation are:
The main body of the shell is tube structure, and the front end of cylinder is opening, is equipped in cylinder and is used to mounted elastically insert
Channel is filled, the rear end of cylinder is equipped with elastic dilatation end seat, and elastic dilatation end seat is an integral molding structure with cylinder, elastic dilatation end
It seats against inner barrel one end and is provided with deck, deck has a side wall and bottom wall for retaining spring tail portion, on the side wall of deck
Equipped with block tongue, block tongue is the bulge-structure on deck side wall, and in its natural state, block tongue top is inserted with opposite deck side wall
Dress distance is less than spring diameter, and the bottom wall of deck is equipped with long slot hole, which through cylinder back-end and is divided into deck
It is made of at least two valve pedestals.
The latching structure is configured with an assembly fixture, which is the expansion pin of a wedge shape, or is a clamping
Device；In the assembled condition, after expansion pin is inserted into long slot hole or clamping device is from the external both ends of long slot hole length direction
After applying chucking power, force the deck being made of at least two valve pedestals in long slot hole width direction elastic dilatation, when deck is in width
Degree direction elastic dilatation to it is described insert distance be greater than or equal to spring diameter when, spring tail portion is fallen into deck, when described
After expansion pin or clamping device withdraw long slot hole, deck is caught in spring tail portion in long slot hole width direction elastic shrinkage, block tongue
In gap, and by spring tail portion clamping lock on deck.
The related content and change interpretation of above-mentioned technical proposal are as follows:
1. in above scheme, " preceding " expression hemostix needle point direction in " front end " and " front ", then table
Show the direction opposite with " preceding ".
2. in above scheme, " hemostix " is also known as " blood taking needle " and means the disposable of included blood taking needle and ejection mechanism
Blood taking instrument.This programme hemostix is usually made of push away hair device, needle core, spring, shell and torsion cap or nut cap.Due to pushing away hair
Device, needle core and torsion cap or nut cap are unrelated with this programme essentiality content, so omitting it.
3. in above scheme, in the assembled condition, after long slot hole is inserted into for the expansion pin of wedge shape in an outside, forcing by extremely
The deck that few two valve pedestals are constituted is expanded in radial elastic, when deck radial elastic be expanded to it is described can insert distance be greater than or
When equal to spring diameter, spring tail portion is fallen into deck, and after the expansion pin withdraws long slot hole, deck is received in radial elastic
Contracting, block tongue are caught in the gap of spring tail portion, and by spring tail portion clamping lock on deck.This programme is inserted using the expansion pin of wedge shape
Enter long slot hole and carry out dilatational elasticity expansion end seat from inside, to realize that assembly spring is preferable assembly method.But the present invention is not
Limit office can also apply chucking power from both ends outside long slot hole using a clamping device, deck is forced to expand in radial elastic in this
, spring is reassembled, then clamping device is removed, and then deck is restored in radial elastic shrinkage.
Working principle and effect of the present invention are: being compressed to one to solve spring in hemostix mechanization and automatic assembling
The problem of outer casing bottom clamping part can be packed into when half trip, this programme specially devise an elasticity in the rear end of casing cylinder
End seat is expanded, which has the following characteristics that first, and elastic dilatation end seat is an integral molding structure with cylinder, i.e.,
Reduce one zero with original syringe (housing) compared with bottom cover (tail-hood) assembles Combination Design with shell integrated injection molding
Part saves a secondary mold；Second, elastic dilatation end seat is provided with deck by inner barrel one end, and the side wall of deck is equipped with
Block tongue, in its natural state, the distance that inserts of deck are less than spring diameter, and the bottom wall of deck is equipped with long slot hole for deck point
It is cut into and is made of at least two valve pedestals.When mechanization and automatic assembling spring, elongated slot is inserted into using a wedge-shaped expansion pin
On the one hand hole can be used to position shell, another aspect expansion pin can force deck to be expanded in radial elastic, when can insert away from
When from being greater than or equal to spring diameter, spring tail portion is fallen into deck, when shell withdraws the assembly station of corresponding expansion pin, card
Seat is in radial elastic shrinkage, and block tongue is caught in the gap of spring tail portion, and by spring tail portion clamping lock on deck.Present invention design
Rationally, it is skillfully constructed, the amount of parts of hemostix can not only be effectively reduced, and can effectively solve spring-compressed to one
Can be fitted into respective clamp portion when half trip (is not that spring is all just fitted into clamping part after compression, and spring-compressed is to one
Still in soft condition when half trip) motorization assembly requirement.
Detailed description of the invention
Fig. 1 is the perspective view of spring in hemostix of the present invention；
Fig. 2 is the perspective view of shell in hemostix of the present invention；
Fig. 3 is the perspective view of assembly fixture of the present invention；
Fig. 4 is present invention assembly schematic diagram；
Fig. 5 is the partial enlarged view in Fig. 4；
Fig. 6 is the shell and spring cross-sectional view after present invention assembly；
Fig. 7 is the perspective view of shell of the present invention.
Label declaration in the figures above is as follows:
1. spring；2. shell；3. assembly fixture；4. taper pin face；5. block tongue；6. inserting channel；7. guiding rib；8. guiding
Inclined-plane；9. long slot hole；10. baffle；11. open；12. expansion pin；13. elastic dilatation end seat；14. deck.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and embodiments:
A kind of embodiment: hemostix spring tail portion elastic dilatation latching structure
The present embodiment hemostix is the disposable blood taking device tool of a kind of included blood taking needle and ejection mechanism, usually by pushing away hair
Device, needle core, spring, shell and torsion cap composition, wherein needle core is an integral molding structure with cap is turned round.Due to push away hair device, needle core with
And turning round cap is the prior art, and unrelated with this programme essentiality content, for the ease of clear and accurate embodiment this programme
Essentiality content, so using these components as omission.
Referring to Fig. 1-Fig. 7, which includes that shell 2(is shown in Fig. 2) and spring 1(see Fig. 1).
The main body of the shell 2 is tube structure, and the front end of cylinder is that opening 11(is shown in Fig. 2), interior be equipped with of cylinder is used to fill
Inserting channel 6(with spring 1 is shown in Fig. 4), the rear end of cylinder is equipped with elastic dilatation end seat 13(and sees Fig. 5), elastic dilatation end seat 13
It is an integral molding structure with cylinder, elastic dilatation end seat 13 is provided with deck 14(by inner barrel one end and sees Fig. 5), deck 14 has
Have the side wall and bottom wall for 1 tail portion of retaining spring, the side wall of deck 14 is equipped with block tongue 5(and sees Fig. 5), block tongue 5 is deck 14
Bulge-structure on side wall, and block tongue 5 is unilateral setting on 14 side wall of deck (see Fig. 4 and Fig. 7).In its natural state,
The distance that inserts of 5 top of block tongue and 14 side wall of opposite deck is less than 1 diameter of spring, and the bottom wall of deck 14 is equipped with long slot hole 9
(see Fig. 5 and Fig. 7), which runs through cylinder back-end and be divided into deck 14 is made of two valve pedestals.
The long slot hole 9 is I-shaped (see figure 7).9 side wall of long slot hole is equipped with baffle 10, and 10 quantity of baffle is two
A, two baffles 10 are spaced setting on 9 length direction of long slot hole, wherein two baffles 10 are unilateral on 9 side wall of long slot hole
(see figure 7) is set.
The inserting channel 6 along circumferentially spaced four guiding ribs 7 limit of cylinder inboard wall by constituting, every guiding rib
7 front is equipped with guiding surface 8, leads to deck 14 with this 1 tail portion of guide springs.
(see figure 4) in the assembled condition, when shell 2 is located at mechanization or Automated assembly station, have one outside be
The expansion pin 12(assembly fixture 3 in wedge-shaped (with taper pin face 4)) be inserted into long slot hole 9 after, force the deck 14 being made of two valve pedestals
In 9 width direction elastic dilatation of long slot hole, when deck 14 inserts distance greatly to described in 9 width direction elastic dilatation of long slot hole
In or when being equal to 1 diameter of spring, 1 tail portion of spring is fallen into deck 14, when shell 2 and spring 1 withdraw the assembly station, expansion
Pin 12 withdraws long slot hole 9, and deck 14 is caught in the gap of 1 tail portion of spring in 9 width direction elastic shrinkage of long slot hole, block tongue 5, and
By 1 tail portion clamping lock of spring (see figure 6) on deck 14.
It is explained as follows below for other performances of the invention and variation:
1. in above-described embodiment, block tongue 5 is quantitatively one, and be on 14 side wall of deck unilateral setting (see
Fig. 4 and Fig. 7).But the present invention is not limited to this, and block tongue 5 can be using multiple, and at unilateral or bilateral on 14 side wall of deck
Setting.
2. in above-described embodiment, set that there are two baffles 10 on 9 side wall of long slot hole, two baffles 10 are on 9 side wall of long slot hole
For unilateral setting (Fig. 7).But the present invention is not limited to this, and baffle 10 can be one, three or three or more, in long slot hole
Arrangement on 9 side walls can be using unilateral or bilateral setting.
3. in above-described embodiment, long slot hole 9 is I-shaped (see figure 7).But not limited to this, the long slot hole of the invention
9 can be the shapes such as linear type, arc, fold-line-shaped.This be it will be appreciated by those skilled in the art that.In the present invention, long
The effect key of slot 9 is to run through cylinder back-end and be divided into deck 14 to be made of at least two valve pedestals, designs in this way
Deck 14 just has elastic dilatation ability in the radial direction of cylinder.
4. in above-described embodiment, the inserting channel 6 along circumferentially spaced four guiding ribs 7 of cylinder inboard wall by limiting
It constitutes.But the present invention is not limited to this, and guiding rib 7 can be three, five, and even more, this is that those skilled in the art can
With understanding.
5. being to be inserted into long slot hole 9 from inside come dilatational elasticity expansion end using the expansion pin 12 of wedge shape in above-described embodiment
Seat 13, to realize that assembly spring is preferable assembly method.But the unlimited office of the present invention can also use a clamping device in this
Both ends apply chucking power outside from long slot hole, force deck to be expanded in radial elastic, reassemble spring, then clamping device is removed
It removes, then deck is restored in radial elastic shrinkage.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of hemostix spring tail portion elastic dilatation latching structure, including shell (2) and spring (1), it is characterised in that:
The main body of the shell (2) is tube structure, and the front end of cylinder is open (11), is equipped in cylinder and is used to assemble spring
(1) rear end in inserting channel (6), cylinder is equipped with elastic dilatation end seat (13), and elastic dilatation end seat (13) is integrated with cylinder
Molding structure, elastic dilatation end seat (13) are provided with deck (14) by inner barrel one end, and deck (14) has for positioning bullet
The side wall of the side wall and bottom wall of spring (1) tail portion, deck (14) is equipped with block tongue (5), and block tongue (5) is convex on deck (14) side wall
Structure is played, in its natural state, the distance that inserts of block tongue (5) top and opposite deck (14) side wall is less than spring (1) diameter,
The bottom wall of deck (14) is equipped with long slot hole (9), which through cylinder back-end and is divided into deck (14) by least
Two valve pedestals are constituted；
The latching structure is configured with an assembly fixture, which is the expansion pin (12) of a wedge shape, or is a clamping
Device；In the assembled condition, after expansion pin (12) are inserted into long slot hole (9) or clamping device is from long slot hole (9) length direction
External both ends apply chucking power after, force the deck (14) being made of at least two valve pedestals in long slot hole (9) width direction bullet
Property expansion, when deck (14) width direction elastic dilatation to it is described insert distance be greater than or equal to spring (1) diameter when, bullet
Spring (1) tail portion is fallen into deck (14), after the expansion pin (12) or clamping device withdraw long slot hole (9), deck (14) In
Long slot hole (9) width direction elastic shrinkage, block tongue (5) are caught in the gap of spring (1) tail portion, and by spring (1) tail portion clamping lock
On deck (14).
2. latching structure according to claim 1, it is characterised in that: the block tongue (5) is single on deck (14) side wall
Side setting.
3. latching structure according to claim 1, it is characterised in that: the block tongue (5) is double on deck (14) side wall
Side setting.
4. latching structure according to claim 1, it is characterised in that: long slot hole (9) side wall is equipped with baffle (10).
5. latching structure according to claim 4, it is characterised in that: baffle (10) quantity is two, two baffles
(10) on long slot hole (9) length direction be spaced setting, wherein two baffles (10) be on long slot hole (9) side wall it is unilateral or
The bilateral setting of person.
6. latching structure according to claim 1, it is characterised in that: the long slot hole (9) is linear type.
7. latching structure according to claim 1, it is characterised in that: the long slot hole (9) is I-shaped.
8. latching structure according to claim 1, it is characterised in that: the long slot hole (9) is arc.
9. latching structure according to claim 1, it is characterised in that: the long slot hole (9) is fold-line-shaped.
10. latching structure according to claim 1, it is characterised in that: the inserting channel (6) is by along cylinder inboard wall circumferential direction
Spaced at least three guiding rib (7) limits are constituted, and the front of every guiding rib (7) is equipped with guiding surface (8), with this
Guide springs (1) tail portion leads to deck (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810856278.7A CN108937961B (en) | 2018-07-31 | 2018-07-31 | A kind of hemostix spring tail portion elastic dilatation latching structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810856278.7A CN108937961B (en) | 2018-07-31 | 2018-07-31 | A kind of hemostix spring tail portion elastic dilatation latching structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108937961A CN108937961A (en) | 2018-12-07 |
| CN108937961B true CN108937961B (en) | 2019-11-05 |
Family
ID=64465348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810856278.7A Active CN108937961B (en) | 2018-07-31 | 2018-07-31 | A kind of hemostix spring tail portion elastic dilatation latching structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108937961B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3760201B2 (en) * | 2001-06-07 | 2006-03-29 | アークレイ株式会社 | Extrusion device |
| EP1560530B1 (en) * | 2002-10-29 | 2010-12-22 | AMBI, Inc. | Single-use lancet device |
| EP1581115B1 (en) * | 2002-12-30 | 2009-10-14 | Roche Diagnostics GmbH | Blood acquisition suspension system |
| DE602004023920D1 (en) * | 2003-03-17 | 2009-12-17 | Arkray Inc | PUNCTURE DEVICE |
| CN1994225A (en) * | 2006-01-06 | 2007-07-11 | 张洪杰 | A safety blood-taking needle |
| CN101816562B (en) * | 2010-04-22 | 2012-04-18 | 王琳 | Disposable automatic painless safe hemostix |
| CN106859669B (en) * | 2017-01-22 | 2021-03-23 | 普昂(杭州)医疗科技股份有限公司 | Disposable safety blood taking needle, assembling method and using method |
-
2018
- 2018-07-31 CN CN201810856278.7A patent/CN108937961B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108937961A (en) | 2018-12-07 |
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Elastic expansion locking structure for spring tail of blood collector Effective date of registration: 20220105 Granted publication date: 20191105 Pledgee: China Minsheng Bank Co.,Ltd. Suzhou Branch Pledgor: STERILANCE MEDICAL (SUZHOU) Inc. Registration number: Y2022320010001 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230523 Granted publication date: 20191105 Pledgee: China Minsheng Bank Co.,Ltd. Suzhou Branch Pledgor: STERILANCE MEDICAL (SUZHOU) Inc. Registration number: Y2022320010001 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A Spring Tail Elastic Expansion Lock Structure for Blood Sampler Effective date of registration: 20230627 Granted publication date: 20191105 Pledgee: China Minsheng Bank Co.,Ltd. Suzhou Branch Pledgor: STERILANCE MEDICAL (SUZHOU) Inc. Registration number: Y2023980045723 |