CN213667287U - Can maintain cylinder of negative pressure suction - Google Patents
Can maintain cylinder of negative pressure suction Download PDFInfo
- Publication number
- CN213667287U CN213667287U CN202021157798.8U CN202021157798U CN213667287U CN 213667287 U CN213667287 U CN 213667287U CN 202021157798 U CN202021157798 U CN 202021157798U CN 213667287 U CN213667287 U CN 213667287U
- Authority
- CN
- China
- Prior art keywords
- pintle
- negative pressure
- syringe
- cylinder
- pressure suction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 241000282472 Canis lupus familiaris Species 0.000 abstract description 8
- 238000003745 diagnosis Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract description 2
- 210000004872 soft tissue Anatomy 0.000 abstract description 2
- 210000003128 head Anatomy 0.000 description 8
- 238000000034 method Methods 0.000 description 3
- 210000002489 tectorial membrane Anatomy 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model provides a pair of can maintain cylinder of negative pressure suction, including cylinder and pintle, the cylinder afterbody is equipped with a plurality of dogs, and the pintle middle part is equipped with the pintle supporting part, and the pintle supporting part is equipped with the lateral wall that corresponds with dog quantity. The utility model provides a syringe capable of maintaining negative pressure suction, which realizes simple, compact and reasonable structure; the stable negative pressure is maintained when liquid or soft tissue of a patient is sucked in clinical treatment, the needle cylinder sucking work is simply and labor-saving completed, the diagnosis and treatment work of medical staff is greatly facilitated, the piston can provide slight deformation in the early period, the sucking discomfort caused by rapid lifting when the piston is just inserted into a human body is relieved, the stability and reliability of the whole negative pressure sucking period are ensured, and the needle cylinder sucking device has wide applicability in the field of medical appliances.
Description
Technical Field
The utility model relates to the field of medical equipment, in particular to injection or suction medical equipment field.
Background
Syringes are a common medical device. As early as the 15 th century, kathler, italian, proposed the principle of the syringe. Gas or liquid is primarily drawn or injected with a needle. Syringes may also be used for injection through rubber septa in medical devices, containers, scientific instruments such as in some chromatography. Sometimes, people need to continuously extract human effusion or extract medicine, so a negative pressure maintaining structure is developed.
Such as: CN102553001A syringe suction negative pressure maintaining device sets up the breach at the pintle flank and the syringe sets up external fixation module to satisfy continuous negative pressure, but this kind of structure fixed module installation difficulty when operating alone, and one is held the syringe, one is held the pintle, and fixed module needs others to help the card to go into, and syringe needle fixed unstable inadequately.
The CN201210026084.7 syringe suction negative pressure maintaining device is also provided with a notch on the side wing of the pintle and an independent negative pressure fixing device outside the syringe to maintain the negative pressure, and both the syringe suction negative pressure maintaining device and the syringe suction negative pressure maintaining device have the problem that one person is difficult to control simultaneously.
Patent 99221561.7 discloses a disposable adjustable negative pressure automatic suction body cavity puncture needle, which comprises a pintle, a needle tube, and a needle head, wherein the pintle is provided with a groove on its projection, and the tail of the needle tube wall is provided with a circular arc-shaped barrier sheet. In the using process, the pintle is pulled and then rotated, and the circular arc-shaped blocking piece with the upper part connected with the tail part of the needle tube wall is embedded into the groove of the pintle. The utility model discloses a solve the one-hand operation pjncture needle to a certain extent, improved operating stability's problem. However, the needle plug must be rotated during the puncturing process, the shaking and instability of the whole needle tube are easy to generate, and the matching of the circular arc-shaped blocking piece and the step-shaped notch is not firm enough.
SUMMERY OF THE UTILITY MODEL
To adopting independent negative pressure fixing device to maintain the operation alone when negative pressure among the prior art, syringe needle and cylinder are connected insecure technical problem, the utility model provides a can maintain the cylinder of negative pressure suction, the dog that utilizes setting up breach and cylinder afterbody in the pintle side provides and lasts the negative pressure, make and just can accomplish whole operations alone, and set up arc recess and elasticity tectorial membrane at the piston front end, leave buffer space when promoting the pintle in the earlier stage, avoid inserting back quick suction makes the uncomfortable sense that human body hydraulic pressure force rapidly changes and lead to, the cylinder front portion is equipped with screw thread portion and guarantees that the hour head is connected reliably for a long time, has extensive suitability in the cylinder field.
The utility model provides a pair of can maintain cylinder of negative pressure suction, including cylinder and pintle, the cylinder afterbody is equipped with a plurality of dogs, and the pintle middle part is equipped with the pintle supporting part, and the pintle supporting part is equipped with the lateral wall that corresponds with dog quantity.
In the utility model, the front part of the needle cylinder is provided with a thread part.
The utility model discloses in, screw thread portion includes two or three.
In the utility model, the front part of the pintle is provided with a piston, and the upper part of the pintle is provided with the rear part of the pintle.
The utility model discloses in, the piston front portion is equipped with the arc recess.
The utility model discloses in, the arc recess is equipped with the elasticity tectorial membrane outward.
In the utility model, the pintle afterbody is in threaded connection with the pintle supporting part.
In the utility model, the front part of the needle cylinder is provided with the replacing head, and the replacing head is connected with the thread of the needle cylinder.
The utility model has the advantages that:
the utility model provides a pair of can maintain cylinder of negative pressure suction, whole simple structure, it is compact, rationally, can maintain stable suction pressure when suction patient's body fluid or set up negative pressure suction in the soft tissue in clinical treatment, simple laborsaving completion cylinder suction work, greatly make things convenient for medical staff's diagnosis and treatment work, and can provide slight deformation in the piston front portion, alleviate just insert the uncomfortable sense of suction that causes owing to drawing up fast when the human body, and guaranteed reliable and stable during whole negative pressure suction, wide suitability has in the medical instrument field.
Drawings
Fig. 1 is a schematic view of the structure of the device of the present invention.
Fig. 2 is a schematic view of the structure of the syringe of the present invention.
Fig. 3 is a schematic sectional view of the syringe of the present invention.
Fig. 4 is a schematic view of the structure of the pintle of the present invention.
In FIGS. 1-4: 1-needle cylinder, 2-pintle tail, 3-pintle support, 4-notch, 5-replacement head, 6-piston, 7-thread part, 8-stop block, and 9-elastic film.
Detailed Description
The following description of the present invention will be made in further detail with reference to the accompanying fig. 1 to 4 and examples, but the method of the present invention is not limited to the following examples.
In the present invention, for convenience of description, the description of the relative position relationship of the components in the present invention is described according to the layout pattern of fig. 1, for example: the positional relationship of up, down, left, right, etc. is determined in accordance with the layout direction of fig. 1.
The utility model discloses well used cylinder 1, pintle afterbody 2, pintle supporting part 3, piston 6 etc. all purchase or customize through the market approach.
The utility model provides a pair of can maintain cylinder of negative pressure suction, including cylinder 1 and pintle, the cylinder afterbody is equipped with a plurality of dogs 8, and the pintle middle part is equipped with pintle supporting part 3, and pintle supporting part 3 is equipped with the lateral wall that corresponds with dog 8 quantity.
In the utility model, the front part of the needle cylinder 1 is provided with a thread part 7.
The utility model discloses in, screw thread portion 7 includes two or three.
In the utility model, the front part of the pintle is provided with a piston 6, and the upper part of the pintle is provided with a pintle tail part 2.
The utility model discloses in, 6 front portions of piston are equipped with the arc recess.
The utility model discloses in, the arc recess is equipped with elasticity tectorial membrane 9 outward.
In the utility model, the pintle tail part 2 is connected with the pintle supporting part 3 by screw thread.
In the utility model, the front part of the needle cylinder 1 is provided with a replacing head 5, and the replacing head 5 is connected with the side wall thread of the needle cylinder 1.
When being suitable for the utility model relates to a can maintain negative pressure suction's cylinder, install piston 6 with pintle supporting part 3 and insert from one side of changing head 5, install pintle supporting part 3 behind after inserting, the installation is changed head 5 and is accomplished the equipment, and is good with drainage tube threaded connection during the use, and it is rotatory to draw the pintle to outside to block breach 4 on dog 8, continuously provides the negative pressure.
As described above, the present invention can be better realized, the above-mentioned embodiments are only right the preferred embodiments of the present invention are described, not right the scope of the present invention is limited, without departing from the design spirit of the present invention, the ordinary skilled in the art will be right the various modifications and improvements made by the technical solution of the present invention all fall into the determined protection scope of the present invention.
Claims (6)
1. A syringe capable of maintaining negative pressure suction comprises a syringe and a pintle, and is characterized in that a plurality of stop blocks are arranged at the tail of the syringe, a pintle supporting part is arranged in the middle of the pintle, and the pintle supporting part is provided with side walls corresponding to the number of the stop blocks; the front part of the needle cylinder is provided with a thread part; the threaded portion includes two or three pieces.
2. The syringe capable of sustaining negative pressure suction according to claim 1, wherein the pintle is provided at a front portion thereof with a piston and at an upper portion thereof with a pintle tail.
3. The syringe of claim 2 wherein the forward portion of the plunger defines an arcuate groove.
4. A syringe capable of sustaining negative pressure suction according to claim 3, wherein an elastic coating is provided outside the arc-shaped groove.
5. A syringe capable of sustaining negative pressure suction according to claim 2, wherein the pintle tail and the pintle support are threadedly connected.
6. The syringe of claim 1 wherein the syringe is provided with a replacement head at the front thereof, the replacement head being threadably connected to the syringe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021157798.8U CN213667287U (en) | 2020-06-20 | 2020-06-20 | Can maintain cylinder of negative pressure suction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021157798.8U CN213667287U (en) | 2020-06-20 | 2020-06-20 | Can maintain cylinder of negative pressure suction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213667287U true CN213667287U (en) | 2021-07-13 |
Family
ID=76724355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021157798.8U Expired - Fee Related CN213667287U (en) | 2020-06-20 | 2020-06-20 | Can maintain cylinder of negative pressure suction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213667287U (en) |
-
2020
- 2020-06-20 CN CN202021157798.8U patent/CN213667287U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210713 |