CN102145198A - Low back pressure needle-free assembly and device thereof - Google Patents
Low back pressure needle-free assembly and device thereof Download PDFInfo
- Publication number
- CN102145198A CN102145198A CN2010101144312A CN201010114431A CN102145198A CN 102145198 A CN102145198 A CN 102145198A CN 2010101144312 A CN2010101144312 A CN 2010101144312A CN 201010114431 A CN201010114431 A CN 201010114431A CN 102145198 A CN102145198 A CN 102145198A
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- joint portion
- housing
- syndeton
- elastomer
- back pressure
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Abstract
The invention provides a low back pressure needle-free assembly, which comprises a shell, an elastomer, a spring, a puncturing structure and a connecting structure, wherein the shell is provided with a channel, and the inner wall of the channel is convexly provided with convex ribs; the elastomer is arranged in the channel, the elastomer is provided with an accumulating space, and the inner wall of one closed end of the elastomer is provided with a convex part; the spring is arranged in the accumulating space of the elastomer; the puncturing structure passes through the spring, the convex part is propped against the outer wall of one end of the puncturing structure, the puncturing structure is provided with at least one open pore and one runner, the open pore is formed at one end of the puncturing structure and communicated with the runner, and the runner is communicated with the bottom of the puncturing structure; and the connecting structure is connected at the bottom of the shell. A needle does not need to be used in injection, so the safety is increased, the cost is saved and the discomfort of a patient can be relieved. The invention also provides a low back pressure needle-free assembly device.
Description
Technical field
The invention relates to that a kind of low back pressure exempts from pin combination and device thereof, refer 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, known 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, the inventor improves thoughts on above-mentioned shortcoming, is that the spy concentrates on studies and cooperates the utilization of scientific principle, proposes a kind of reasonable in design and effectively improve the invention of above-mentioned shortcoming finally.
Summary of the invention
Main purpose of the present invention provides 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 applied range is effectively saved cost, and more can not cause patient's discomfort and pain.
In order to reach above-mentioned purpose, the invention provides a kind of low back pressure and exempt from the pin combination, include: a housing, it has the channel at this case top of perforation, top, and the inwall of this channel convexes with most fins; One elastomer, it is located in the channel 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 an 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.
The present invention provides a kind of low back pressure to exempt from the pin composite set in addition, includes:
One housing, it has one and connects the top of this housing and the channel of bottom, and the inwall of this channel convexes with most fins;
One elastomer, it is located in the channel 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 an 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
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.
The present invention has following useful effect:
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 invention and technology contents for making, see also following relevant for detailed description of the present invention and accompanying drawing, yet accompanying drawing only for reference with explanation usefulness, be not to be used for to the present invention's limitr in addition.
Description of drawings
Fig. 1 is the user mode sketch map of known chemical feed pipe.
Fig. 2 exempts from the axonometric chart of pin combination for the low back pressure of the present invention.
Fig. 3 exempts from the three-dimensional exploded view of pin combination for the low back pressure of the present invention.
Fig. 4 exempts from the sectional exploded view of pin combination for the low back pressure of the present invention.
Fig. 5 exempts from the cutaway view of pin combination for the low back pressure of the present invention.
Fig. 6 exempts from the cutaway view () of pin composite set for the low back pressure of the present invention.
Fig. 7 exempts from the cutaway view (two) of pin composite set for the low back pressure of the present invention.
Fig. 8 exempts from the three-dimensional exploded view that pin makes up second embodiment for the low back pressure of the present invention.
Fig. 9 exempts from the three-dimensional exploded view that pin makes up the 3rd embodiment for the low back pressure of the present invention.
Figure 10 exempts from the three-dimensional exploded view that pin makes up the 4th embodiment for the low back pressure of the present invention.
Figure 11 exempts from the three-dimensional exploded view that pin makes up the 5th embodiment for the low back pressure of the present invention.
Figure 12 exempts from the three-dimensional exploded view that pin makes up the 6th embodiment for the low back pressure of the present invention.
Figure 13 exempts from the axonometric chart that pin makes up the 7th embodiment for the low back pressure of the present invention.
Figure 14 exempts from the three-dimensional exploded view that pin makes up the 7th embodiment for the low back pressure of the present invention.
Symbol description
1a chemical feed pipe 11a dosing mouth
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
7 syndetons, 71 bodys
72 joint portions, 8 syndetons
81 bodys, 82 joint portions
9 get it filled the seat 91 puncture tubes
92 disk bodies, 93 Access Divisions
94 trips, 10 medicine bottles
101 syndetons, 1011 joint portions
1012 infusion ports, 1013 outlets
102 syndetons, 1020 valve bodies
10201 joint portions, 10,202 first pipelines
10,203 second pipelines, 1021 switches
10211 instruction units, 10212 articulated sections
10213 through holes
The specific embodiment
Seeing also Fig. 2 to Fig. 5, the invention provides a kind of low back pressure and exempt from the pin combination, is to be 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, most fins 12, one first joint portion 13, one second joint portion 14 and one first location divisions 15.This passage 11 connects housing 1 top and bottom.To the bottom, first space 111 of this passage 11 is that convergent extends by housing 1 top, and second space 112 of this passage 11 is that flaring extends (as shown in Figure 5).Those fins 12 are longitudinal extensions, 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 most thread structures 131, and those 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 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 the top on this chassis 23 and bottom 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 this two perforate 42 is communicated with runner 41.
In the present embodiment, 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 2, 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 most thread structures 541, can be in order to connect.Again, the inwall of this storage tank 52 also convexes 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, the present invention 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.
See also Fig. 8, present embodiment and the foregoing description difference are: this syndeton 7 is a straight tube, this syndeton 7 has a cylindrical body 71 and a joint portion 72, and this joint portion 72 is positioned at an end of body 71, second joint portion, 14 interference engagement of this joint portion 72 and housing 1.
See also Fig. 9, present embodiment and the foregoing description (Fig. 8) difference is: this syndeton 8 is a Y tube, this syndeton 8 has a body 81 and a joint portion 82 that is " Y " font, this joint portion 82 is positioned at an end of body 81, second joint portion, 14 interference engagement of this joint portion 82 and housing 1.
See also Figure 10, present embodiment and the foregoing description (Fig. 3) difference is: the bottom of this syndeton 5 further be provided with one get it filled the seat 9, this seat 9 of getting it filled has a puncture tube 91, a disk body 92 and two Access Divisions 93, this puncture tube 91 is arranged on the disk body 92, one end of puncture tube 91 is needle-like, and the medicine bottle 10 that can puncture is to extract medicament.This disk body 92 is to make things convenient for the user application of force.This two Access Division 93 is convexly set in the other end of puncture tube 91, and this two Access Division 93 is connected in the 4th joint portion 54 of syndeton 5.
See also Figure 11 and cooperate Figure 10, present embodiment is different with the foregoing description (Figure 10) be in: extend to form two relative trips 94 by disk body 92 bending downwards, can be in order to clamping medicine bottle 10.
See also Figure 12, present embodiment and the foregoing description difference are: this syndeton 101 is a hopper loam cake, this syndeton 101 has a joint portion that connects 1011, an infusion port 1012 that connects and an outlet 1013 that connects, second joint portion, 14 interference engagement of this joint portion 1011 and housing 1, this infusion port 1012 can connect a upper tubing (figure does not show), and this outlet 1013 is in order to discharge the air in the hopper (figure does not show).
See also Figure 13 and Figure 14, present embodiment is different with the foregoing description be in: this syndeton 102 is a three-way valve, this syndeton 102 has a valve body 1020 and a switch 1021, and this valve body 1020 has a joint portion 10201, one first pipeline 10202 and one second pipeline 10203 that is interconnected.This switch 1021 has an instruction unit 10211 and an articulated section 10212, and this instruction unit 10211 is positioned at an end of articulated section 10212, is arrow shaped, the pipeline of closing in order to indication.This articulated section 10212 is hubbed in the valve body 1020, by being located at the through hole 10213 on the articulated section 10212 and rotating this switch 1021, optionally to be communicated with the joint portion 10201 and first pipeline 10202 or this joint portion 10201 and second pipeline 10203.
The low back pressure of the present invention 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.
But; the above is a preferable possible embodiments of the present invention, and is non-so promptly limit to protection scope of the present invention, so the equivalent structure that uses description of the present invention and accompanying drawing content to do such as changes; all in like manner be contained in the claim scope of the present invention, close and give Chen Ming.
Claims (10)
1. a low back pressure is exempted from the pin composite set, it is characterized in that, includes:
Housing, it has one and connects the top of this housing and the channel of bottom, and the inner walls that this channel is relative convexes with most fins;
Elastomer, it is located in the channel of this housing, and this elastomer has the accommodation space that connects this elastomer bottom, and the inwall that this elastomer seals an end is provided with protuberance;
Spring, it is located in this elastomeric accommodation space;
Puncture 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 perforate at least and 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;
Syndeton, it is connected in the bottom of this housing; And
Injection device, it is located at the top of this housing, and this injection device has 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 according to claim 1 is exempted from the pin composite set, it is characterized in that, those fins are longitudinal extensions, and the space is around on the inwall that is convexly set in this housing.
3. low back pressure according to 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 most thread structures, those thread structure rings are located at the outer wall of this first joint portion, and this second joint portion is a bulge loop.
4. low back pressure according to claim 3 is exempted from the pin composite set, it is characterized in that, this syndeton has pipeline, this pipeline is communicated in this runner that punctures structure, one end of this syndeton is provided with 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 most thread structures.
5. low back pressure according to claim 4 is exempted from the pin composite set, it is characterized in that, the bottom of this syndeton further is provided with the seat of getting it filled, this seat of getting it filled has puncture tube, disk body and two Access Divisions, this puncture tube is arranged in this disk body, this two Access Division is convexly set in an end of this puncture tube, and this two Access Division is connected in the 4th joint portion of this syndeton.
6. low back pressure according to claim 3 is exempted from the pin composite set, it is characterized in that this syndeton is a straight tube, this syndeton has cylindrical body and joint portion, this binding site is in an end of this body, the second joint portion interference engagement of this joint portion and this housing.
7. low back pressure according to claim 3 is exempted from the pin composite set, it is characterized in that this syndeton is a Y tube, this syndeton has body and the joint portion that is " Y " font, this binding site is in an end of this body, the second joint portion interference engagement of this joint portion and this housing.
8. low back pressure according to claim 3 is exempted from the pin composite set, it is characterized in that, this syndeton is the hopper loam cake, and this syndeton has joint portion, infusion port and outlet, the second joint portion interference engagement of this joint portion and this housing.
9. low back pressure according to claim 1 is exempted from the pin composite set, it is characterized in that, this syndeton is a three-way valve, this syndeton has valve body and switch, this valve body has joint portion, first pipeline and second pipeline, this switch is hubbed at this valve body, optionally to be communicated with this joint portion and this first pipeline or this joint portion and this second pipeline.
10. a low back pressure is exempted from the pin combination, it is characterized in that, includes:
Housing, it has the channel at this case top of perforation, top, and the inwall of this channel convexes with most fins;
Elastomer, it is located in the channel of this housing, and this elastomer has the accommodation space that connects this elastomer bottom, and the inwall that this elastomer seals an end is provided with protuberance;
Spring, it is located in this elastomeric accommodation space;
Puncture 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 perforate at least and 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
Syndeton, it is connected in the bottom of this housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101144312A CN102145198A (en) | 2010-02-09 | 2010-02-09 | Low back pressure needle-free assembly and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101144312A CN102145198A (en) | 2010-02-09 | 2010-02-09 | Low back pressure needle-free assembly and device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102145198A true CN102145198A (en) | 2011-08-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101144312A Pending CN102145198A (en) | 2010-02-09 | 2010-02-09 | Low back pressure needle-free assembly and device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102145198A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104815364A (en) * | 2015-04-30 | 2015-08-05 | 苏州林华医疗器械有限公司 | Needleless connection piece |
| 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 |
-
2010
- 2010-02-09 CN CN2010101144312A patent/CN102145198A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104815364A (en) * | 2015-04-30 | 2015-08-05 | 苏州林华医疗器械有限公司 | Needleless connection piece |
| CN104815364B (en) * | 2015-04-30 | 2018-04-20 | 苏州林华医疗器械股份有限公司 | A kind of needleless connector |
| 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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| PB01 | Publication | ||
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Application publication date: 20110810 |