CN213466217U - Negative pressure pumping device - Google Patents
Negative pressure pumping device Download PDFInfo
- Publication number
- CN213466217U CN213466217U CN202021111767.9U CN202021111767U CN213466217U CN 213466217 U CN213466217 U CN 213466217U CN 202021111767 U CN202021111767 U CN 202021111767U CN 213466217 U CN213466217 U CN 213466217U
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- CN
- China
- Prior art keywords
- negative pressure
- rod
- shell
- wall
- threaded section
- 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
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- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The utility model discloses a take out negative pressure device, include: a shell, which is provided with an inner cavity, and the front end of the shell is provided with an air inlet short pipe; the screw cap is arranged at the tail end of the shell, and a hole is formed in the center of the screw cap; a rod passing through the hole, the outer wall of the rod being in threaded connection with the inner wall of the hole; a piston connected to the front end of the rod. The utility model discloses a take out negative pressure device has laborsaving advantage, and can keep the negative pressure.
Description
Technical Field
The utility model relates to the field of medical equipment, in particular to take out negative pressure device.
Background
Generally, a common syringe is used clinically to create negative pressure or to withdraw fluid from a patient. The plunger rod of the syringe is drawn outwardly to draw gas or liquid into the syringe. While conventional syringes are effective in most situations, mechanical withdrawal of the plunger rod can be laborious when the plunger rod is withdrawn to some extent.
SUMMERY OF THE UTILITY MODEL
In order to solve one or more problems of the prior art, the utility model discloses a take out negative pressure device, it includes:
a shell, which is provided with an inner cavity, and the front end of the shell is provided with an air inlet short pipe;
the screw cap is arranged at the tail end of the shell, and a hole is formed in the center of the screw cap;
a rod passing through the hole, the outer wall of the rod being in threaded connection with the inner wall of the hole;
a piston connected to the front end of the rod.
The beneficial effects of the embodiment are as follows: the negative pressure pumping device has the advantage of labor saving, and can maintain negative pressure.
In some embodiments, the rod includes a threaded section, the outer wall of the threaded section is provided with threads, the screw cap is sleeved on the threaded section, the front end of the threaded section is provided with a limiting portion, and the tail end of the threaded section is provided with a knob portion. The knob part can be rotated to drive the rod to rotate, and the area provided with threads between the limiting part and the knob part limits the motion stroke of the rod.
In some embodiments, the knob portion includes an annular portion connected to the threaded section and an arcuate portion disposed at a trailing end of the annular portion. When the knob part is pressed against the palm of the medical staff, the arc part can increase the contact area with the palm.
In some embodiments, notches are provided on both sides of the arcuate portion. The thumb and ring finger of the medical care personnel can pinch the gap, which is convenient for rotating the knob part.
In some embodiments, the shell is symmetrically provided with side wings at both sides, and the side wings comprise side handles and reinforcing ribs which are respectively connected with the side handles and the shell. When the negative pressure pumping operation is carried out, one hand can hold the side wing, and the other hand can rotate the knob part.
In some embodiments, the intake spool is connected to the first male connector.
In some embodiments, a protruding ring is circumferentially arranged on the outer wall of the short air inlet pipe, a groove matched with the protruding ring is circumferentially arranged on the inner wall of the tail end of the first male connector, the protruding ring is arranged in the groove, and a sealing ring is further arranged inside the tail end of the first male connector.
In some embodiments, the first male connector is connected to a valve having a female connector at one end and a second male connector at the other end.
Drawings
Fig. 1 is a cross-sectional view of a negative pressure pumping device according to an embodiment of the present invention.
Fig. 2 is a cross-sectional view of a rod of the negative pressure pumping device according to an embodiment of the present invention.
Fig. 3 is a cross-sectional view of a screw cap of a negative pressure pumping device according to an embodiment of the present invention.
Fig. 4 is a sectional view of a casing of the negative pressure suction device according to an embodiment of the present invention.
Fig. 5 is a schematic view of the arc portion as viewed from a direction in fig. 2.
Fig. 6 is a sectional view of the front end of the casing of the negative pressure pumping device according to an embodiment of the present invention.
Detailed Description
Referring to fig. 1-4, the negative pressure pumping device includes:
a shell 1, the shell 1 is provided with an inner cavity 2, and the front end of the shell 1 is provided with an air inlet short pipe 3;
a screw cap 4 arranged at the tail end of the shell 1, wherein the center of the screw cap 4 is provided with a hole 5;
a rod 6, the rod 6 passes through the hole 5, and the outer wall of the rod 6 is in threaded connection with the inner wall of the hole 5;
a piston 7 connected to the front end of the rod 6.
The chamber 2 is preferably cylindrical and the piston 7 is made of a resilient rubber material. The piston 7 is in close contact with the side wall of the inner cavity 2 to maintain sealing. When the rod 6 is rotated clockwise and counterclockwise, the rod 6 is reciprocated in the axial direction, and the piston 7 is reciprocated in the inner chamber 2. For example, when the rod 6 is rotated in a certain direction, for example, counterclockwise, the rod 6 is retracted, i.e., moved to the operator side, and the piston 7 is also retracted, so that gas or liquid enters the inner cavity 2 from the gas inlet stub 3; when the lever 6 is rotated in the other direction, for example, clockwise, the lever 6 and the piston 7 move forward to be reset. The negative pressure pumping device has the advantage of labor saving, and can maintain negative pressure.
In some embodiments, referring to fig. 2, the rod 6 includes a threaded section 8, the outer wall of the threaded section 8 is provided with threads, the screw cap 4 is sleeved on the threaded section 8, the front end of the threaded section 8 is provided with a limiting portion 9, and the tail end of the threaded section 8 is provided with a knob portion 10. The knob part 10 can be rotated to drive the rod 6 to rotate, and the area between the limiting part 9 and the knob part 10, which is provided with threads, limits the movement stroke of the rod 6.
In some embodiments, referring to fig. 2, the knob portion 10 includes a ring portion 11 connected to the threaded section 8 and an arc portion 12 disposed at a rear end of the ring portion 11. The tail end of the thread section 8 is connected with the outer circle of the annular part 11, and the extension line of the thread section 8 passes through the circle center of the annular part 11. The arc part 12 is arranged at the outer edge of the annular part 11, the radius of the arc part 12 is larger than the outer diameter of the annular part 11, and the arc part 12 is internally tangent with the annular part 11. When the knob portion 10 is pressed against the palm of the medical staff, the arc portion 12 can increase the contact area with the palm.
In some embodiments, referring to fig. 5, notches 13 are formed on both sides of the arc portion 12. The thumb and ring finger of the medical staff can pinch the notch 13, and the inner edge of the notch 13 is arc-shaped, which is convenient for rotating the knob part 10.
In some embodiments, referring to fig. 4, the lateral wings 14 are symmetrically disposed on both sides of the shell 1, and the lateral wings 14 include a lateral shank 15 and a reinforcing rib 16, and the reinforcing rib 16 is connected to the lateral shank 15 and the shell 1, respectively. The side shank 15 is provided on the outer wall of the housing 1 and extends along the radial direction of the housing 1. The reinforcing ribs 16 serve to reinforce the rigidity of the side shank 15. When the negative pressure pumping operation is performed, the wing 14 can be held by one hand and the knob portion 10 can be rotated by the other hand.
In some embodiments, referring to fig. 6, the inlet spool 3 is connected to the first male connector 17. Preferably, the first male connector 17 is a male connector of a luer connector.
In some embodiments, referring to fig. 6, the outer wall of the inlet stub 3 is provided with a protruding ring 18 along the circumferential direction, the inner wall of the tail end of the first male connector 17 is provided with a groove 19 matching with the protruding ring 18 along the circumferential direction, and the protruding ring 18 is disposed in the groove 19. The inside of the tail end of the first male connector 17 is further provided with a sealing ring 20, and the sealing ring 20 is tightly attached to the inner wall of the tail end of the first male connector 17 to play a role in sealing and prevent air leakage or liquid leakage.
In some embodiments, referring to fig. 1, the first male connector 17 is connected to a valve 21, and one end of the valve 21 is a female connector 22 and the other end is a second male connector 23. The female connector 22 is a female connector of a luer connector, and the second male connector 23 is a male connector of a luer connector.
What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.
Claims (8)
1. Take out negative pressure device, its characterized in that includes:
the shell is provided with an inner cavity, and the front end of the shell is provided with an air inlet short pipe;
the screw cap is arranged at the tail end of the shell, and a hole is formed in the center of the screw cap;
a rod, said rod passing through said hole, an outer wall of said rod being in threaded connection with an inner wall of said hole;
a piston connected to the front end of the rod.
2. The negative pressure pumping device as claimed in claim 1, wherein the rod comprises a threaded section, the outer wall of the threaded section is provided with threads, the screw cap is sleeved on the threaded section, the front end of the threaded section is provided with a limiting portion, and the tail end of the threaded section is provided with a knob portion.
3. The negative pressure pumping device as claimed in claim 2, wherein the knob portion includes a ring portion connected to the threaded section and an arc portion provided at a rear end of the ring portion.
4. The negative pressure suction device as claimed in claim 3, wherein notches are provided on both sides of the arc-shaped portion.
5. The negative pressure pumping device as claimed in claim 1, wherein the shell is symmetrically provided with side wings at both sides, the side wings comprise side handles and reinforcing ribs, and the reinforcing ribs are respectively connected with the side handles and the shell.
6. The negative pressure pumping apparatus according to claim 1, wherein the intake stub is connected to the first male connector.
7. The negative pressure pumping device as claimed in claim 6, wherein a protruding ring is circumferentially arranged on the outer wall of the air inlet short pipe, a groove matched with the protruding ring is circumferentially arranged on the inner wall of the tail end of the first male connector, the protruding ring is arranged in the groove, and a sealing ring is further arranged inside the tail end of the first male connector.
8. The negative pressure pumping apparatus as claimed in claim 6, wherein the first male connector is connected to a valve, one end of the valve is a female connector, and the other end of the valve is a second male connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021111767.9U CN213466217U (en) | 2020-06-16 | 2020-06-16 | Negative pressure pumping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021111767.9U CN213466217U (en) | 2020-06-16 | 2020-06-16 | Negative pressure pumping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213466217U true CN213466217U (en) | 2021-06-18 |
Family
ID=76391234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021111767.9U Expired - Fee Related CN213466217U (en) | 2020-06-16 | 2020-06-16 | Negative pressure pumping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213466217U (en) |
-
2020
- 2020-06-16 CN CN202021111767.9U patent/CN213466217U/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: 20210618 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |