CN208659415U - Syringe - Google Patents
Syringe Download PDFInfo
- Publication number
- CN208659415U CN208659415U CN201721400737.8U CN201721400737U CN208659415U CN 208659415 U CN208659415 U CN 208659415U CN 201721400737 U CN201721400737 U CN 201721400737U CN 208659415 U CN208659415 U CN 208659415U
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- China
- Prior art keywords
- push rod
- rib
- cylinder
- syringe
- position block
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Abstract
The utility model relates to medical instruments fields, disclose a kind of syringe.The syringe includes: cylinder, is formed with fixation hole on the periphery wall of the end of cylinder；Push rod, push rod can be moved back and forth relative to the inner wall of cylinder；And it is inserted into and is fixed on the position block in fixation hole.Wherein, push rod includes the body of rod and at least two ribs that interval is formed on the periphery wall of the body of rod, each rib is along the axially extending of the body of rod, it is formed with the baffle piece towards rib extension adjacent thereto at least one rib, and is formed with the opening for passing through position block between the elongated end of the baffle piece rib adjacent with this.Push rod can be located on cylinder by the syringe of the utility model at any time during extraction, the head end that can effectively avoid push rod towards cylinder moves, therefore the liquid that can avoid extracting is significantly reduced there is a phenomenon where flowing back because of malpractice brought by operation error.
Description
Technical field
The utility model relates to medical instruments fields, and in particular to a kind of syringe.
Background technique
Bone marrow puncture is to take a kind of common diagnostic techniques of bone marrow fluid, generallys use syringe pair in the course of surgery
Bone marrow fluid is taken.The existing syringe applied to bone marrow puncture is the syringe of ordinary construction, generally includes to infuse
Emitter cylinder, injector push-rod and syringe piston.Wherein, the front end use of injector cartridge can fill the female Luer of syringe needle,
The front end of injector push-rod is provided with syringe piston, and injector push-rod generates fortune relative to injector cartridge under external force
It is dynamic, to drive the reciprocating movement of syringe piston, to realize the function that syringe is extracted or injected.
However, during taking bone marrow fluid, the operating process of syringe be different to common liq (such as blood and
Medical fluid etc.) extraction, biggish negative pressure can be generated in syringe cylinder body in operation, existing syringe is because of its material
And the reason in intensity, injector cartridge is easy to deform in the biggish situation of negative pressure, eventually leads to extraction failure.This
Outside, due to there is no locking device in existing syringe, such as in extraction process, it cannot ensure that injector push-rod is pulled to note
The end of shooting cylinder body, but move in the opposite direction, thus will lead to the bone marrow fluid that is extracted can involuntary rollback extremely
Human body, and then so that operation is caused danger and even generate malpractice.
In view of the deficiencies of the prior art, wish to seek one kind can be during extraction by those skilled in the art
Injector push-rod is located in the syringe on injector cartridge at any time, it is accurate to guarantee to operate in clinical process, it reduces
Because of malpractice brought by operation error.
Utility model content
In order to seek a kind of syringe that at any time can be located in push rod during extraction on cylinder, with reduce because
Malpractice brought by operation error, the utility model proposes a kind of syringes.
Syringe according to the present utility model, comprising: cylinder is formed with fixation hole on the periphery wall of the end of cylinder；It pushes away
Bar, push rod can be moved back and forth relative to the inner wall of cylinder；And position block, position block are inserted into and are fixed on
In fixation hole.Wherein, push rod includes the body of rod and at least two ribs that interval is formed on the periphery wall of the body of rod, and each rib is along the body of rod
It is axially extending, be formed with the baffle piece towards rib extension adjacent thereto at least one rib, and the elongated end of baffle piece with should
The opening for passing through position block is formed between adjacent rib.
Further, baffle piece is multiple, and each baffle piece is arranged along the length direction interval of rib.
Further, the number of rib is four, wherein baffle piece is respectively formed on non-conterminous two ribs.
Further, it is formed with the card slot being also formed on the rib of baffle piece for being clamped position block.
Further, position block includes insertion section for being inserted and secured in fixation hole and is connected with insertion section
Stopper section, wherein stopper section is used to be connected to the periphery wall of cylinder.
Further, insertion section includes cylindrical body, and the close stopper section being formed on the periphery wall of cylindrical body
Annular groove.
Further, the outer diameter of cylindrical body is gradually increased on the direction towards stopper section.
Further, push rod further includes the piston that the head end of push rod is arranged in, the inner surface interference fit of piston and cylinder.
Further, the rib close to the end of push rod has the radial width tapered towards the end of push rod.
Further, the end of push rod is formed with circular operating plate, and the rib close to the end of push rod is extended to be grasped with round
Make plate to be connected.
Push rod can be located on cylinder by the syringe of the utility model at any time during extraction, can effectively avoid
The head end of push rod towards cylinder moves, therefore the liquid that can avoid extracting and then is effectively reduced there is a phenomenon where flowing back
Because of malpractice brought by operation error.Its is convenient to use, and operation is more flexible, and produces and processes conveniently, favorably
In being widely popularized and use.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all the appended drawings, similar
Element or part are generally identified by similar appended drawing reference.In attached drawing, each element or part might not be according to actual ratios
It draws.
Fig. 1 is the structural schematic diagram according to the syringe of the utility model；
Fig. 2 is the structural schematic diagram of cylinder shown in FIG. 1；
Fig. 3 is the perspective view of push rod shown in FIG. 1；
Fig. 4 is the main view of push rod shown in FIG. 1；
Fig. 5 is the schematic cross-section along the direction A-A of push rod shown in Fig. 4；
Fig. 6 is structural schematic diagram of the push rod shown in Fig. 4 towards paper inward turning turnback；
Fig. 7 is the main view of position block shown in FIG. 1；
Fig. 8 is the side view of position block shown in FIG. 1.
Specific embodiment
It is described in detail below in conjunction with embodiment of the attached drawing to technical solutions of the utility model.Following embodiment is only
For clearly illustrating the technical solution of the utility model, therefore it is only used as example, and it is originally practical to cannot be used as a limitation limitation
Novel protection scope.
Fig. 1 shows the structural schematic diagram of syringe 100 according to the present utility model.As shown in Figure 1, the syringe 100
Include: cylinder 1, fixation hole 12 (as shown in Figure 2) is formed on the periphery wall of the end of cylinder 1, the head end of cylinder 1 is formed with needle
Connector 11 (adapter 11 is preferably female Luer)；Reciprocal fortune can occur relative to the inner wall of cylinder 1 for push rod 2, push rod 2
It is dynamic；And position block 3, position block 3 are inserted into and are fixed in fixation hole 12.Wherein, it in conjunction with shown in Fig. 3 to Fig. 6, pushes away
Bar 2 includes the body of rod 21 and at least two ribs 22 that interval is formed on the periphery wall of the body of rod 21, axial direction of each rib 22 along the body of rod 21
Extend, be formed with the baffle piece 23 towards rib extension adjacent thereto at least one rib 22, and the elongated end of baffle piece 23 with
The opening 231 (as shown in Figure 1) for passing through position block 3 is formed between the adjacent rib 22.
Structure of the Fig. 1 it illustrates the syringe 100 of the utility model in the initial state.As shown in Figure 1, push rod 2
Head end is located at the front end in the inner cavity of cylinder 1, and position block 3 is located at the inner wall and two adjacent ribs 22 of cylinder 1 at this time
In the space being collectively formed.When needing to extract liquid using syringe 100, push rod 2 can be pulled along the right direction of Fig. 1 first
Direction rotating push rod 2 outside simultaneously towards paper, thus position block 3 can move through opening relative to push rod 2
231, to realize that the normal extraction of push rod 2 acts on.At this point, there is a small amount of liquid to enter in cylinder 1 with the movement of push rod 2,
If the liquid viscosity or density that are extracted are larger, when causing the negative pressure in cylinder 1 larger, it can rotate and push away towards the direction in paper
Bar 2 is stuck on baffle piece 23 so that position block 3 supports, in this way, under the collective effect of baffle piece 23 and position block 3, push rod
2 can remain at same position relative to cylinder 1, without moving towards the head end of cylinder 1, therefore can avoid taking out
There is a phenomenon where flow back for the liquid taken.After the pressure in cylinder 1 reaches balance, it can continue first to push away along the right direction pulling of Fig. 1
It, can towards the direction rotating push rod 2 outside paper to realize the effect extracted again while bar 2, and when needing localization handspike 2
Towards the direction rotating push rod 2 in paper, it is stuck on next baffle piece 23 so that position block 3 supports.
In a preferred embodiment, as shown in Figure 1, the number of baffle piece 23 is multiple, and each baffle piece 23 is along rib
22 length direction interval setting.May be implemented in the extraction process to liquid by the multiple baffle pieces 23 of the setting will repeatedly push away
Bar 2 is located on cylinder 1, i.e., liquid can be more stably extracted in each localization handspike 2, simultaneously effective avoids cylinder 1
The reflux of interior liquid.Preferably, multiple baffle pieces 23 are equally spaced on the body of rod 21.It is further preferred that can be to adjacent
The distance between two baffle pieces 23 carry out size definition, such as can convert the distance to the volume etc. of liquid, are set by this
It sets, operator can easily distinguish the extraction volume of liquid according to the position of baffle piece 23, with preferably control extraction amount.
In another preferred embodiment, in conjunction with shown in Fig. 3 to 6, the number of rib 22 is four.Wherein, baffle piece 23
It is respectively formed on non-conterminous two ribs 22.The setting so that operator during extracting liquid always along same
Also it is able to achieve switching of the push rod 2 between decimation pattern and station-keeping mode in the case where direction rotating push rod 2, that is, reduces operation
Person causes to make mistakes because along different directions rotating push rod 2, and then leads to the reflux of liquid.This is set as operator and brings pole
Big easily simultaneously effective reduces surgical risks.
As shown in Figure 1 and Figure 4, it is formed with the card slot being also formed on the rib 22 of baffle piece 23 for being clamped position block 23
25.Under the original state of syringe 100 as shown in Figure 1, position block 3 can be located in card slot 25, which can avoid
Push rod 2 is drawn out under the effect of external force.When needing to pull out push rod 2, rotatable push rod 2 makes position block 3 remove card slot
25。
According to the utility model, referring to figs. 7 and 8, position block 3 includes for being inserted and secured on fixation hole 12
In insertion section 31 and the stopper section 32 that is connected with insertion section 31.Wherein, stopper section 32 is used to be connected to the periphery wall of cylinder 1
On.Preferably, stopper section 32 is the arc panel to match with the periphery wall of cylinder 1.Further, insertion section 31 includes cylindricality sheet
Body 311, and the annular groove 312 of close stopper section 32 being formed on the periphery wall of cylindrical body 311.The annular groove 312 is used for
It is connected in the fixation hole 12 on cylinder 1.When installing position block 3, cylindrical body 311 can be forced into fixation hole 12
In, until being fixed reliable and simple to operate when annular groove 312 is caught in fixation hole 12.
Preferably, in order to be inserted into cylindrical body 311 more smoothly, more quickly in fixation hole 12, settable cylindrical body
311 outer diameter is gradually increased on the direction towards stopper section 32.The setting so that cylindrical body 311 is formed as pyramidal, because
This its miner diameter end can facilitate insertion into fixation hole 12.It is further preferred that in order to realize that cylindrical body 311 and baffle piece 23 are more steady
The part of cylindrical body 311 fastened with baffle piece 23 can be formed as plate by fixed positioning action, which can increase cylindricality
The contact area of ontology 311 and baffle piece 23, so as to improve the stability of positioning.
According to the utility model, as shown in Figure 1, push rod 2 further includes the piston 4 that the head end of push rod 2 is arranged in, piston 4 connects
It connects on the connector 26 of push rod 2, and is preferably interference fitted with the inner surface of cylinder 1.By the setting so that syringe 100 is formed
For vacuum pressure syringe, it is particularly suitable for the extraction to viscosity or the biggish liquid of density.
As shown in Figure 1, the rib 22 close to the end of push rod 2 has the radial width tapered towards the end of push rod 2.This sets
Setting can be convenient for rotation of the operator to push rod 2, while also improving the aesthetics of push rod 2.Preferably, in order to increase operator
Member grasps the stability of push rod 2, can form circular operating plate 24 in the end of push rod 2, the rib 22 close to the end of push rod 2 extends
Extremely it is connected with the circular operating plate 24.Meanwhile the circular operating plate 24 can also be in push-in push rod 2, that is, for being operation when injecting
Personnel provide more stable support.
In addition, cylinder 1, push rod 2 and the specific material of position block 3 can be according to syringes 100 according to the utility model
Extracting object is specifically selected.For example, when extracting object can make to form larger negative pressure in cylinder 1 in extraction process
When, cylinder 1, push rod 2 and position block 3 may be selected to be made of the biggish material of intensity, such as ABS material (acrylonitrile-butadiene-
Styrol copolymer), to improve the intensity of syringe 100, to avoid the biggish pressure of 2 internal cause of cylinder generation in operation
Syringe 100 is caused to deform by force；And when extracting object will not make to form larger negative pressure in cylinder 1 in extraction process
When, cylinder 1, push rod 2 and position block 3 can also be made of PV (Corvic) material.
It is worth noting that, the syringe 100 of the utility model can also be used for extracting common liquid, such as viscosity or close
Spend lesser liquid, such as medical fluid or blood, rotating push rod 2 be not necessarily to when extracting, only guarantee position block 3 and baffle piece 23 it
Between do not interfere, i.e., guarantee position block 3 231 can pass through along opening always.
Push rod 2 can be located on cylinder 1 by the syringe 100 of the utility model at any time during extraction, can be had
Effect avoid push rod 2 from moving towards the head end of cylinder 1, therefore can avoid extraction liquid there is a phenomenon where flowing back, Jin Eryou
Reduce because of malpractice brought by operation error to effect.Its is convenient to use, and operation is more flexible, and production and processing side
Just, be conducive to be widely popularized and use.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type, should all cover in the claim of the utility model and the range of specification.
Especially, as long as structural conflict is not present, items technical characteristic mentioned in the various embodiments can combine in any way
Get up.The utility model is not limited to specific embodiment disclosed herein, but including falling within the scope of the appended claims
All technical solutions.
Claims (10)
1. a kind of syringe characterized by comprising
Cylinder is formed with fixation hole on the periphery wall of the end of the cylinder,
Push rod, the push rod can be moved back and forth relative to the inner wall of the cylinder, and
Position block, the position block are inserted into and are fixed in the fixation hole,
Wherein, the push rod includes the body of rod and at least two ribs that interval is formed on the periphery wall of the body of rod, each rib
The baffle piece towards rib extension adjacent thereto, and institute are formed in the axially extending of the body of rod, at least one described rib
State the opening being formed between the elongated end rib adjacent with this of baffle piece for passing through the position block.
2. syringe according to claim 1, which is characterized in that the baffle piece is multiple, and each baffle piece edge
The length direction interval of the rib is arranged.
3. syringe according to claim 1 or 2, which is characterized in that the number of the rib be four, wherein it is described every
Washer is respectively formed on non-conterminous two ribs.
4. syringe according to claim 3, which is characterized in that be formed with to be also formed on the rib of the baffle piece and be used for
It is clamped the card slot of the position block.
5. syringe according to claim 1 or 2, which is characterized in that the position block includes for being inserted and fixed
Insertion section in the fixation hole and the stopper section being connected with the insertion section, wherein the stopper section is for being connected to institute
It states on the periphery wall of cylinder.
6. syringe according to claim 5, which is characterized in that the insertion section includes cylindrical body, and is formed in institute
State the annular groove close to the stopper section on the periphery wall of cylindrical body.
7. syringe according to claim 6, which is characterized in that the outer diameter of the cylindrical body is towards the stopper section
Direction on be gradually increased.
8. syringe according to claim 1 or 2, which is characterized in that the push rod further includes that the push rod is arranged in
The inner surface of the piston of head end, the piston and the cylinder is interference fitted.
9. syringe according to claim 1 or 2, which is characterized in that the rib close to the end of the push rod has
The radial width tapered towards the end of the push rod.
10. syringe according to claim 9, which is characterized in that the end of the push rod is formed with circular operating plate, leans on
The rib of the end of the nearly push rod is extended to be connected with the circular operating plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721400737.8U CN208659415U (en) | 2017-10-27 | 2017-10-27 | Syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721400737.8U CN208659415U (en) | 2017-10-27 | 2017-10-27 | Syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208659415U true CN208659415U (en) | 2019-03-29 |
Family
ID=65818953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721400737.8U Active CN208659415U (en) | 2017-10-27 | 2017-10-27 | Syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208659415U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107714103A (en) * | 2017-10-27 | 2018-02-23 | 北京市春立正达医疗器械股份有限公司 | Syringe |
-
2017
- 2017-10-27 CN CN201721400737.8U patent/CN208659415U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107714103A (en) * | 2017-10-27 | 2018-02-23 | 北京市春立正达医疗器械股份有限公司 | Syringe |
| CN107714103B (en) * | 2017-10-27 | 2024-06-04 | 北京市春立正达医疗器械股份有限公司 | Injection syringe |
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| GR01 | Patent grant |