CN201481913U - Low-return pressure and needle-free assembly and device thereof - Google Patents
Low-return pressure and needle-free assembly and device thereof Download PDFInfo
- Publication number
- CN201481913U CN201481913U CN2009201748796U CN200920174879U CN201481913U CN 201481913 U CN201481913 U CN 201481913U CN 2009201748796 U CN2009201748796 U CN 2009201748796U CN 200920174879 U CN200920174879 U CN 200920174879U CN 201481913 U CN201481913 U CN 201481913U
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- housing
- joint portion
- elastomer
- back pressure
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Abstract
The utility model provides a low-return pressure and needle-free assembly and a device thereof. The low-return pressure and needle-free assembly comprises a housing, an elastic body, a spring, a puncturing structure and a connecting structure, wherein the housing is provided with a through passageway, the inner wall of which is convexly provided with a convex rib, the elastic body is arranged in the passageway, the elastic body has a containing space for passing through the bottom thereof, the inner wall of one sealing end of the elastic body is provided with a lug boss, the spring is arranged in the containing space of the elastic body, the puncturing structure is arranged on the spring, the lug boss abuts against the outer wall of one end of the puncturing structure, the puncturing structure is provided with at least one opening and one flow passageway, the opening is arranged at one end of the puncturing structure and communicated with the flow passageway, the flow passageway passes through the bottom of the puncturing structure, the connecting structure is connected with the bottom of the housing and is provided with a pipeline, and the pipeline is communicated with the flow passageway of the puncturing structure. Therefore, when injecting, a needle head can be saved, the use safety is increased, the cost is saved, and the discomfort to patients can be relived.
Description
Technical field
This utility model relates to a kind of low back pressure and exempts from pin combination and device thereof, refers to that especially a kind of low back pressure that is applied to medical instrument, can transfuses blood or infuse exempts from pin combination and device thereof.
Background technology
See also Fig. 1, existing chemical feed pipe 1a is a hollow tube, has a dosing mouth 11a, this dosing mouth 11a has filled in a cock body 12a in the place, this cock body 12a is a flexible material, when medical personnel want injectable drug, earlier medicine is extracted suction via an injection device 2a, again the syringe needle 21a of injection device 2a is thrust cock body 12a and among the chemical feed pipe 1a that arrives, the push rod 22a that promotes injection device 2a can go into the medicine injection in the chemical feed pipe 1a; Yet syringe needle 21a is a sharp keen structure, therefore as medical personnel during at use injection device 2a, may be stabbed by syringe needle 21a because of carelessness, if syringe needle 21a totally then can not cause infection, therefore do not need syringe needle 21a to get final product the chemical feed pipe 1a of dosing as if designing, then the chance that can avoid medical personnel to be infected increases the safety on using, and used syringe needle 21a must abandon, and increases cost burden.Moreover the syringe needle 21a that utilizes injection device 2a in human body, if injection is too fast, causes patient's discomfort with the medicine direct injection easily, when extracting injection device 2a in addition, also can produce the air return pressure, causes pain.
Therefore, this creator is thoughts on above-mentioned amendatory defective, proposes a kind of reasonable in design and effectively improve the creation of above-mentioned defective.
Summary of the invention
Main purpose of the present utility model is to provide a kind of low back pressure to exempt from pin combination and device thereof, and its structural design can increase the safety in the use, and saves cost, can not cause patient's discomfort and pain.
In order to reach above-mentioned purpose, this utility model provides a kind of low back pressure to exempt from the pin combination, includes: a housing, and it has the passage of this case top of perforation and bottom, and the inner walls that this passage is relative convexes with a plurality of fins; One elastomer, it is located in the passage of this housing, and this elastomer has the accommodation space of this elastomer bottom of a perforation, and the inwall that this elastomer seals an end is provided with a protuberance; One spring, it is located in this elastomeric accommodation space; One punctures structure, it is arranged on this spring, and this protuberance is resisted against this outer wall that punctures an end of structure, and this punctures structure and has at least one perforate and a runner, this perforate is located at this and is punctured an end of structure and be communicated with this runner, and this runner connects this bottom that punctures structure; And a syndeton, it is connected in the bottom of this housing, and this syndeton has a pipeline, and this pipeline is communicated in this runner that punctures structure.
This utility model provides a kind of low back pressure to exempt from the pin composite set in addition, includes: a housing, and it has the passage of this case top of perforation and bottom, and the inner walls that this passage is relative convexes with a plurality of fins; One elastomer, it is located in the passage of this housing, and this elastomer has the accommodation space of this elastomer bottom of a perforation, and the inwall that this elastomer seals an end is provided with a protuberance; One spring, it is located in this elastomeric accommodation space; One punctures structure, it is arranged on this spring, and this protuberance is resisted against this outer wall that punctures an end of structure, and this punctures structure and has at least one perforate and a runner, this perforate is located at this and is punctured an end of structure and be communicated with this runner, and this runner connects this bottom that punctures structure; One syndeton, it is connected in the bottom of this housing, and this syndeton has a pipeline, and this pipeline is communicated in this runner that punctures structure; An and injection device, it is located at the top of this housing, this injection device has an injection head, this injection head is inserted in this passage, and this injection head compresses this elastomer and this spring, this elastomeric top is pierced through in this end that punctures structure, and this perforate that punctures structure is positioned at this injection head.
The low back pressure of this utility model exempts from the pin combination and device has following beneficial technical effects:
Need not use syringe needle when 1, injecting,, and save cost so the use shortcoming of needleless can increase the safety in the use.
2, the elastomer inwall that seals an end is provided with protuberance, and this protuberance is resisted against the outer wall of an end that punctures structure, when compressed elastomer and spring during because of the elastic-restoring force resilience, can avoid alleviating patient's pain because of the too fast increase air of resilience return pressure.
3, the part of the fin of housing and elastomer distortion contacts for point, in the time of can reducing the elastomer resilience and the frictional force between inner walls, avoid can't resilience situation.
Further understand feature of the present utility model and technology contents for making, see also following relevant for detailed description of the present utility model and accompanying drawing, yet accompanying drawing only for reference with the explanation, be not to be used for this utility model is limited.
Description of drawings
Fig. 1 is the user mode sketch map of existing chemical feed pipe.
Fig. 2 exempts from the axonometric chart of pin combination for the low back pressure of this utility model.
Fig. 3 exempts from the three-dimensional exploded view of pin combination for the low back pressure of this utility model.
Fig. 4 exempts from the sectional exploded view of pin combination for the low back pressure of this utility model.
Fig. 5 exempts from the cutaway view of pin combination for the low back pressure of this utility model.
Fig. 6 exempts from the part view sub-anatomy of pin composite set for the low back pressure of this utility model.
Fig. 7 exempts from the cutaway view of pin composite set for the low back pressure of this utility model.
Wherein, description of reference numerals is as follows:
1a chemical feed pipe 11a dosing mouth
12a cock body 2a injection device
21a syringe needle 22a push rod
1 housing, 11 passages
112 second spaces, 111 first spaces
12 fins, 13 first joint portions
131 thread structures, 14 second joint portions
15 first location divisions, 2 elastomers
21 accommodation spaces, 22 protuberances
23 chassis, 231 first grooves
232 second grooves, 3 springs
4 puncture structure 41 runners
42 perforates, 5 syndetons
511 second location divisions, 51 the 3rd joint portions
52 storage tanks, 53 pipelines
54 the 4th joint portions, 541 thread structures
6 injection devices, 61 injection heads
62 spiro union portions, 621 thread structures
The specific embodiment
See also Fig. 2 to Fig. 5, this utility model provides a kind of low back pressure to exempt from the pin combination, it is applied on the medical instrument, and in order to blood transfusion or transfusion, this low back pressure is exempted from the pin combination and comprised: a housing 1, an elastomer 2, a spring 3, puncture a structure 4 and a syndeton 5.
In the present embodiment, this housing 1 is a hollow circular cylinder, has a passage 11, a plurality of fin 12, one first joint portion 13, one second joint portion 14 and one first location division 15.This passage 11 connects this housing 1 top and bottom.To the bottom, first space, 111 convergents of this passage 11 extend by housing 1 top, and second space, 112 flarings of this passage 11 extend (as shown in Figure 4).Described a plurality of fin 12 extends longitudinally, and on the inwall of space around second space 112 that is convexly set in housing 1, in order to reduce the frictional force of elastomer 2 resiliences.This first joint portion 13 is positioned at an end of housing 1, and its outer wall is equipped with a plurality of thread structures 131, and described a plurality of thread structures 131 are external screw teeth.This second joint portion 14 is positioned at the other end of housing 1, and this second joint portion 14 is a bulge loop.This first location division 15 is a bulge loop also, is convexly set in the bottom of housing 1.
This elastomer 2 is the silica gel of hollow, and it is cylindric that profile is.Elastomer 2 is located in the passage 11 of housing 1, has an accommodation space 21, a protuberance 22 and a chassis 23.This accommodation space 21 connects the bottom of this elastomer 2, and this protuberance 22 is located on the inwall of elastomer 2 sealings one end, and protuberance 22 is resisted against the outer wall that this punctures an end of structure 4.This chassis 23 is positioned at the bottom of elastomer 2, and these 23 relative top and bottoms, chassis are equipped with one first groove 231 and one second groove 232 respectively.
This spring 3 is located in the accommodation space 21 of elastomer 2, the elastic-restoring force when providing elastomer 2 to be compressed.
This punctures structure 4 and is needle tubing, and it is arranged on this spring 3.This punctures structure 4 and has a runner 41 and at least one perforate 42, and this runner 41 connects the bottom that punctures structure 4.In the present embodiment, this end that punctures structure 4 is provided with two relative perforates 42, and described two perforates 42 are communicated with this runner 41.
This syndeton 5 has one the 3rd joint portion 51, a storage tank 52, a pipeline 53 and one the 4th joint portion 54, the 3rd joint portion 51 is a bulge loop, be positioned at an end of syndeton 5, size is slightly larger than second joint portion 14 of housing 1, the 3rd joint portion 51 and second joint portion, 14 interference engagement make syndeton 5 be connected in the bottom of housing 1.This storage tank 52 is positioned at the scope that the 3rd joint portion 51 centers on, and second joint portion 14 of housing 1 is located in storage tank 52.This pipeline 53 is communicated with the runner 41 that punctures structure 4.The 4th joint portion 54 is positioned at the other end of syndeton 5, has a plurality of thread structures 541, can establish tube for transfusion (figure does not show) in order to connect.Again, these storage tank 52 relative inwalls also convex with one second location division 511, this second location division 511 corresponds to second groove 232 of elastomer 2 and is arranged in second groove 232, first location division 15 of this housing 1 corresponds to first groove 231 of elastomer 2 and is arranged in first groove 231, and this elastomer 2 is located in the passage 11 of housing 1.
See also Fig. 6 and Fig. 7, this utility model provides a kind of low back pressure to exempt from the pin composite set in addition, includes: a housing 1, an elastomer 2, a spring 3, puncture structure 4, a syndeton 5 and an injection device 6.This housing 1, elastomer 2, spring 3, the structure that punctures structure 4 and syndeton 5 and above-mentioned explanation are roughly the same, do not repeat them here.
This injection device 6 is located at the top of housing 1, and injection device 6 has an injection head 61 and a spiro union portion 62, and this injection head 61 is inserted in the passage 11, and compresses this elastomer 2 and spring 3.Elastomer 2 is compressed can to produce distortion simultaneously, and the part of elastomer 2 distortion is resisted against the fin 12 of housing 1.The top of elastomer 2 is pierced through on this top that punctures structure 4, and be inserted into injection head 61, make the perforate 42 that punctures structure 4 be positioned at injection head 61, just blood or liquid can be injected by injection device 6, enter runner 41 through perforate 42, along runner 41 to pipeline 53 and the tube for transfusion of the below that arrives enters human body at last.
The low back pressure of this utility model exempts from the pin combination and device has following advantage:
Need not use syringe needle when 1, injecting,, and save cost so the use shortcoming of needleless can increase the safety in the use.
2, be provided with protuberance 22 in the elastomer 2, this protuberance 22 is resisted against this outer wall that punctures an end of structure 4.When injection device 6 when housing 1 separates, compressed elastomer 2 and spring 3 are because of the elastic-restoring force resilience, protuberance 22 can be close to the outer wall that punctures structure 4, avoids alleviating patient's pain because of the too fast increase air of resilience return pressure.
3, the part of the fin 12 on housing 1 inwall and elastomer 2 distortion contacts for point, in the time of can reducing elastomer 2 resiliences and the frictional force of housing 1 inwall, avoid can't resilience situation.
Yet; the above is a preferable possible embodiments of the present utility model; non-so promptly limit to protection domain of the present utility model, so the equivalent structure that all utilization this utility model description and accompanying drawing content are done changes, all in like manner be contained in the scope of the present utility model.
Claims (15)
1. a low back pressure is exempted from the pin composite set, it is characterized in that, comprising:
One housing, it has one and connects the top of this housing and the passage of bottom, and the inner walls that this passage is relative convexes with a plurality of fins;
One elastomer, it is located in the passage of this housing, and this elastomer has the accommodation space of this elastomer bottom of a perforation, and the inwall of this elastomeric sealing one end is provided with a protuberance;
One spring, it is located in this elastomeric accommodation space;
One punctures structure, it is arranged on this spring, and this protuberance is resisted against this outer wall that punctures an end of structure, and this punctures structure and has at least one perforate and a runner, this perforate is located at this and is punctured an end of structure and be communicated with this runner, and this runner connects this bottom that punctures structure;
One syndeton, it is connected in the bottom of this housing, and this syndeton has a pipeline, and this pipeline is communicated in this runner that punctures structure; And
One injection device, it is located at the top of this housing, and this injection device has an injection head, this injection head is inserted in this passage, and this injection head compresses this elastomer and this spring, and this elastomeric top is pierced through in this end that punctures structure, and this perforate that punctures structure is positioned at this injection head.
2. low back pressure as claimed in claim 1 is exempted from the pin composite set, it is characterized in that, one end of this housing is provided with one first joint portion, the other end of this housing is provided with one second joint portion, this first joint portion has a plurality of thread structures, described a plurality of thread structure ring is located at the outer wall of this first joint portion, and this second joint portion is a bulge loop, and this second joint portion is located in the top of this syndeton.
3. low back pressure as claimed in claim 2 is exempted from the pin composite set, it is characterized in that, one end of this syndeton is provided with one the 3rd joint portion and a storage tank, the second joint portion interference engagement of the 3rd joint portion and this housing, this second binding site is in this storage tank, the other end of this syndeton is provided with one the 4th joint portion, and the 4th joint portion has a plurality of thread structures.
4. low back pressure as claimed in claim 2 is exempted from the pin composite set, it is characterized in that, this injection device is equipped with a spiro union portion, and this spiro union portion has a plurality of thread structures, and the thread structure of this spiro union portion is located at the thread structure of this first joint portion accordingly.
5. low back pressure as claimed in claim 1 is exempted from the pin composite set, it is characterized in that, described a plurality of fins extend longitudinally, and the space is around on the inwall that is convexly set in this housing.
6. low back pressure as claimed in claim 1 is exempted from the pin composite set, it is characterized in that, this elastomer is silica gel material, the cylindrical elastomer of profile.
7. low back pressure as claimed in claim 1 is exempted from the pin composite set, it is characterized in that, this elastomer has a chassis, and relative top, bottom, this chassis is respectively equipped with one first groove and one second groove.
8. low back pressure as claimed in claim 7 is exempted from the pin composite set, it is characterized in that, the bottom of this housing convexes with one first location division, this first location division corresponds to this first groove and is arranged in this first groove, the top of this syndeton convexes with one second location division, and this second location division corresponds to this second groove and is arranged in this second groove.
9. a low back pressure is exempted from the pin combination, it is characterized in that, comprising:
One housing, it has one and connects the top of this housing and the passage of bottom, and the inner walls that this passage is relative convexes with a plurality of fins;
One elastomer, it is located in the passage of this housing, and this elastomer has the accommodation space of this elastomer bottom of a perforation, and the inwall that this elastomer seals an end is provided with a protuberance;
One spring, it is located in this elastomeric accommodation space;
One punctures structure, it is arranged on this spring, and this protuberance is resisted against this outer wall that punctures an end of structure, and this punctures structure and has at least one perforate and a runner, this perforate is located at this and is punctured an end of structure and be communicated with this runner, and this runner connects this bottom that punctures structure; And
One syndeton, it is connected in the bottom of this housing, and this syndeton has a pipeline, and this pipeline is communicated in this runner that punctures structure.
10. low back pressure as claimed in claim 9 is exempted from the pin combination, it is characterized in that, one end of this housing is provided with one first joint portion, the other end of this housing is provided with one second joint portion, this first joint portion has a plurality of thread structures, described a plurality of thread structure ring is located at the outer wall of this first joint portion, and this second joint portion is a bulge loop, and this second joint portion is located in the storage tank of this syndeton.
11. low back pressure as claimed in claim 10 is exempted from the pin combination, it is characterized in that, one end of this syndeton is provided with one the 3rd joint portion, the second joint portion interference engagement of the 3rd joint portion and this housing, the other end of this syndeton is provided with one the 4th joint portion, and the 4th joint portion has a plurality of thread structures.
12. low back pressure as claimed in claim 9 is exempted from the pin combination, it is characterized in that described a plurality of fins extend longitudinally, and the space is around on the inwall that is convexly set in this housing.
13. low back pressure as claimed in claim 9 is exempted from the pin combination, it is characterized in that this elastomer is silica gel material, the cylindrical elastomer of profile.
14. low back pressure as claimed in claim 9 is exempted from the pin combination, it is characterized in that this elastomer has a chassis, relative top, bottom, this chassis is respectively equipped with one first groove and one second groove.
15. low back pressure as claimed in claim 14 is exempted from the pin combination, it is characterized in that, the bottom of this housing convexes with one first location division, this first location division corresponds to this first groove and is arranged in this first groove, the top of this syndeton convexes with one second location division, and this second location division corresponds to this second groove and is arranged in this second groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201748796U CN201481913U (en) | 2009-09-14 | 2009-09-14 | Low-return pressure and needle-free assembly and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201748796U CN201481913U (en) | 2009-09-14 | 2009-09-14 | Low-return pressure and needle-free assembly and device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201481913U true CN201481913U (en) | 2010-05-26 |
Family
ID=42420806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201748796U Expired - Fee Related CN201481913U (en) | 2009-09-14 | 2009-09-14 | Low-return pressure and needle-free assembly and device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201481913U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103418048A (en) * | 2012-05-24 | 2013-12-04 | 美昕医疗器械（上海）有限公司 | Needle-free joint |
| CN113041439A (en) * | 2020-12-08 | 2021-06-29 | 湛江健力源医疗用品有限公司 | Closed needle-free connection straight remaining needle |
-
2009
- 2009-09-14 CN CN2009201748796U patent/CN201481913U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103418048A (en) * | 2012-05-24 | 2013-12-04 | 美昕医疗器械（上海）有限公司 | Needle-free joint |
| CN103418048B (en) * | 2012-05-24 | 2015-08-19 | 美昕医疗器械（上海）有限公司 | Needleless joint |
| CN113041439A (en) * | 2020-12-08 | 2021-06-29 | 湛江健力源医疗用品有限公司 | Closed needle-free connection straight remaining needle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20110914 |