CN216798365U - Disposable manual pulse type pushing device - Google Patents
Disposable manual pulse type pushing device Download PDFInfo
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- CN216798365U CN216798365U CN202123233222.2U CN202123233222U CN216798365U CN 216798365 U CN216798365 U CN 216798365U CN 202123233222 U CN202123233222 U CN 202123233222U CN 216798365 U CN216798365 U CN 216798365U
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- push rod
- pulse type
- blocking
- pushing device
- manual pulse
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Abstract
The utility model discloses a disposable manual pulse type pushing device which comprises a cylinder and a piston assembly. The barrel is internally provided with an accommodating space, a first end of the barrel is provided with an injection outlet communicated with the accommodating space, and a second end of the barrel is provided with a first blocking part. The piston assembly is partially arranged in the accommodating space of the cylinder body and comprises a push rod, a plurality of second blocking parts matched with the first blocking parts are arranged on the push rod, the second blocking parts are sequentially distributed at intervals along the advancing direction of the push rod, and in the advancing process of the push rod, the second blocking parts are partially or completely broken or bent in sequence under the action of the first blocking parts, so that liquid in the cylinder body is ejected out from the injection outlet in a pulse mode. The disposable manual pulse type pushing device solves the problems that a manual pulse injector in the prior art is poor in precision and the injection amount is not easy to determine, and is low in cost and simple to operate.
Description
Technical Field
The utility model relates to the technical field of injection pushing equipment, in particular to a disposable manual pulse type pushing device.
Background
In clinical practice, a catheter inserted into a body during indwelling or surgical operation is often required to be pre-flushed, and a pulsed or intermittent syringe is usually required to inject a liquid so as to pre-flush the catheter. However, the prior art is simple to operate because of manual bolus injection, but the liquid amount and the interval time of each bolus injection are completely controlled by a person, and the precision is poor; or rely on electron automatic formula pulse pusher, the liquid volume of propelling movement, push injection time and interval time are accurate at every turn, but the cost is higher, and the operation is more complicated.
The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a disposable manual pulse type pushing device, which solves the problems that a manual pulse syringe in the prior art is poor in precision and the injection amount is not easy to determine, and is low in cost and simple to operate.
In order to achieve the purpose, the utility model provides a disposable manual pulse type pushing device which comprises a cylinder body and a piston assembly.
The barrel is internally provided with an accommodating space, the first end of the barrel is provided with an injection outlet communicated with the accommodating space, and the second end of the barrel is provided with a first blocking part.
The piston assembly is partially arranged in the accommodating space of the cylinder body and comprises a push rod, a plurality of second blocking parts matched with the first blocking parts are arranged on the push rod and are distributed at intervals in sequence along the pushing direction of the push rod, and in the pushing process of the push rod, the second blocking parts are partially or completely broken or bent in sequence under the action of the first blocking parts, so that liquid in the cylinder body is ejected out from the injection outlet in a pulse mode.
In one or more embodiments, the second blocking portions are sequentially arranged at intervals on the same side of the push rod or arranged on different sides of the push rod in a staggered manner.
In one or more embodiments, the second blocking portions are arranged in one or more rows at equal intervals, are arranged on the push rod, and partially or completely fall on the first blocking portions in the axial projection of the barrel.
In one or more embodiments, the second blocking portions may also be arranged in one or more rows at different intervals, and are disposed on the push rod, and partially or completely fall on the first blocking portions in the axial projection of the cylinder.
In one or more embodiments, each surface of the second blocking portion is recessed to form a notch structure, and the second blocking portion located on the side of the notch structure far away from the push rod partially or completely falls on the first blocking portion in the axial projection of the cylinder.
In one or more embodiments, the notch structure is disposed on a surface of the second barrier portion that contacts the first barrier portion.
In one or more embodiments, the notch structure is disposed on a surface of the second barrier portion, which is not in contact with the first barrier portion
In one or more embodiments, the first stop is configured to be removably coupled to the second end of the barrel.
In one or more embodiments, the first stop is configured to be integrally disposed with the barrel.
In one or more embodiments, the piston assembly further comprises a plug body, one end of the push rod is connected with the plug body, and the end of the other end of the push rod is provided with a push rod handle.
In one or more embodiments, the push rod includes a main support body and an auxiliary support body formed on the main support body, and the auxiliary support body and/or the second blocking parts are/is provided on the main support body to extend along a length direction of the main support body.
In one or more embodiments, the main support is configured in a cross-shaped, circular or elliptical structure, and the auxiliary support is configured in a bar-shaped structure.
Compared with the prior art, the disposable manual pulse type pushing device is low in cost, simple to operate and accurate in pushing.
According to the disposable manual pulse type pushing device, the first blocking part and the second blocking part are arranged, so that liquid in the injection cylinder body flows out within a period of time, and does not flow out within a period of time.
Drawings
Fig. 1 is a perspective view of a disposable manual pulse type pushing apparatus according to an embodiment of the present invention (before the second stopper is broken).
Fig. 2 is a front view (before the second stopper is broken) of the disposable manual pulse type pushing device according to an embodiment of the present invention.
Fig. 3 is a side view of a disposable manual pulsed pusher of one embodiment of the utility model (before the second barrier breaks).
Fig. 4 is a cross-sectional view of a disposable manual pulsed pusher of one embodiment of the utility model (before the second barrier breaks).
Fig. 5 is a perspective view of the disposable manual pulse type pushing device according to the embodiment of the present invention (after the second stopper is broken).
Fig. 6 is a cross-sectional view of a disposable manual pulse type pushing device according to an embodiment of the present invention (after the second blocking portion is broken).
Fig. 7 is a cross-sectional view of a disposable manual pulse type pushing device according to another embodiment of the present invention (before the second stopper is broken).
Fig. 8 is a cross-sectional view of a disposable manual pulse type pushing device according to another embodiment of the present invention (after the second stopper is broken).
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
As shown in fig. 1 to 6, one embodiment of the present invention provides a disposable manual pulse type pushing device, which includes a cylinder 10, a grip 20 and a piston assembly 30. The grip portion 20 is disposed on the cylinder 10, and the piston assembly 30 is disposed in the cylinder 10.
The barrel 10 has an accommodating space therein, a first end of the barrel 10 is provided with an injection outlet 11 communicated with the accommodating space, and a second end of the barrel 10 is sleeved with a holding part 20.
The holding portion 20 is detachably sleeved on the second end of the barrel 10. The grip portion 20 is provided with an opening 21 through which the piston assembly 30 is inserted. One or both sides of the opening 21 of the grip 20 are provided with first stoppers 22 extending in the central axis direction of the cylinder 10. In this embodiment, the first blocking portion 22 is configured as a protruding structure, which partially covers the second end of the barrel 10, and the protruding structure may be a flat plate-shaped structure or a baffle structure, which is not limited in the present invention. Alternatively, the first blocking portion 22 may be extended from one or both sides of the opening 21 of the grip portion 20 in a direction away from the central axis of the barrel 10.
In other embodiments, the first stopper may be formed directly on the second end of the barrel 10 to be integrally formed with the barrel 10. The first blocking portion may extend toward the central axis of the cylinder 10, or may extend away from the central axis of the cylinder 10, as shown in fig. 7 and 8.
The piston assembly 30 is partially disposed in the receiving space of the cylinder 10, and the piston assembly 30 includes a push rod 31 and a plug body 32. One end of the push rod 31 is connected with the plug body 32, and the end part of the other end of the push rod 31 is provided with a push rod handle 311.
The push rod 31 includes a main support 312 and an auxiliary support 313 formed at one side of the main support 312, and both the main support 312 and the auxiliary support 313 are configured in a bar-shaped structure. The auxiliary support body 313 extends along the length direction of the main support body 312 and is disposed at the middle of the main support body 312, and both the main support body 312 and the auxiliary support body 313 can be supported against the inner wall of the barrel 10 to provide a stabilizing force for pushing the push rod 31 forward.
The push rod 31 is provided with a plurality of second stoppers 33 engaged with the first stoppers 22. The second blocking parts 33 are sequentially distributed at equal intervals along the advancing direction of the push rod 31 to form a row on the push rod 31, and the axial projection of the second blocking parts on the cylinder 10 partially or completely falls on the first blocking part 22. During the pushing process of the push rod 31, the second blocking portion 33 is partially or completely broken by the first blocking portion 22 in sequence, so that the liquid in the cylinder 10 is ejected from the injection outlet 11 in a pulse manner.
In other embodiments, the second blocking portion 33 may be disposed on the push rod 31 at a non-equal distance. And when the first blocking portion extends along the central axis direction far away from the cylinder 10, the length of the second blocking portion 33 needs to be larger than the radius of the cylinder 10, so that the second blocking portion 33 can contact with the first blocking portion 22 in the pushing process of the push rod 31. In one embodiment, the main support 312 may be configured in a cross-shaped, circular or oval configuration, and the auxiliary support 313 may be configured in a strip configuration.
In order to enable the user to push the push rod 31 without requiring a great force, in one embodiment, the surface of each second blocking portion 33 is recessed to form a notch 331. The second stopping portion 33 located on the side of the notch 331 far from the push rod 31 partially or completely falls on the first stopping portion 22 in the axial projection of the barrel 10.
In one embodiment, the notch 331 is configured as a triangular structure, which is more easily broken, but may be configured in other shapes. The notch structure 331 may be disposed on a surface of the second barrier 33 contacting the first barrier 22, or may be disposed on a surface of the second barrier 33 not contacting the first barrier 22.
In other embodiments, the second blocking portions 33 are disposed on the pushing rod 31 at equal or unequal intervals or staggered (forming multiple rows, disposed on the pushing rod 31). Correspondingly, a plurality of first blocking portions 22 are also formed at the second end of the barrel 10 or at both sides of the opening 21 of the holding portion 20 to form a plurality of sets of matching. This ensures smooth and smooth travel of the push rod 31, as shown in fig. 7 and 8.
The following is a brief description of the manner of use and principle of the disposable manual pulse-type pusher according to the present invention, taking this embodiment as an example.
When the push rod 31 moves to push the liquid in the cylinder 10, the second stopping part 33 with the notch structure 331 meets the stopping of the first stopping part 22, and the push rod 31 can pause moving. If the push rod 31 is further pushed, the pushing force must be increased. With the gradual increase of the pushing force, the stress of the second blocking portion 33 gradually increases until the second blocking portion 33 is broken or bent at the notch structure 331, at which point the pushing force is the maximum. In the process of increasing the pushing force, the push rod 31 is hardly moved, so that the liquid in the cylinder 10 is not discharged. After the second blocking portion 33 is broken, the push rod 31 moves rapidly under the original pushing force until the next second blocking portion 33 contacts the first blocking portion 22. In the process, the thrust force is gradually reduced to a certain value, the push rod moves, and the liquid in the cylinder 10 flows out.
In the above manner, the liquid in the syringe barrel 10 flows out within a period of time, and does not flow out within a period of time. The above process is repeated, i.e. the liquid in the syringe barrel 10 is emitted in pulses.
The time for the liquid to flow out or not to flow out of the cylinder 10 is related to the distance between the second barriers 33, the material of the second barriers 33, the material and strength of the notch structure 331, and the like.
Compared with the prior art, the disposable manual pulse type pushing device is low in cost, simple to operate and accurate in pushing.
The disposable manual pulse type pushing device enables liquid in the injection cylinder body to flow out within a period of time and not to flow out within a period of time through the arrangement of the first blocking part and the second blocking part, and the process is repeated, namely the liquid in the cylinder body is sprayed out from the injection outlet in a pulse type.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the utility model to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the utility model and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the utility model and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the utility model be defined by the claims and their equivalents.
Claims (10)
1. A disposable manual pulse type pushing device is characterized by comprising:
the injection device comprises a cylinder body, a first guide rail, a second guide rail, a first guide rail and a second guide rail, wherein the cylinder body is internally provided with an accommodating space, an injection outlet communicated with the accommodating space is formed in the first end of the cylinder body, and a first blocking part is formed in the second end of the cylinder body; and
and the piston assembly is partially arranged in the accommodating space of the cylinder body and comprises a push rod, a plurality of second blocking parts matched with the first blocking parts are arranged on the push rod and are distributed at intervals in sequence along the pushing direction of the push rod, and in the pushing process of the push rod, the second blocking parts are partially or completely broken or bent in sequence under the action of the first blocking parts so that the liquid in the cylinder body is ejected out from the injection outlet in a pulse mode.
2. The disposable manual pulse type pushing device as claimed in claim 1, wherein a plurality of the second blocking portions are sequentially disposed at intervals on the same side of the push rod or are disposed in staggered rows on different sides of the push rod.
3. A disposable manual pulse type pushing device as claimed in claim 2, wherein said second blocking portions are arranged in one or more rows at equal intervals, are arranged on said push rod, and partially or totally fall on said first blocking portions in the axial projection of said cylinder.
4. The disposable manual pulse type pushing device as recited in claim 1, wherein each of said second stopping portions is recessed to form a notch structure, and said second stopping portion located at a side of said notch structure away from said push rod is partially or entirely located on said first stopping portion in an axial projection of said cylinder.
5. The disposable manual pulse type pushing device according to claim 4, wherein the notch structure is provided on a surface of the second stopper contacting the first stopper; and/or the presence of a gas in the gas,
the notch structure is arranged on the non-contact surface of the second blocking part and the first blocking part.
6. The disposable manual pulsed pusher of claim 1, wherein the first stop is configured to be removably disposed in connection with the barrel second end.
7. The disposable manual pulsed pusher of claim 1, wherein the first stop is configured to be integrally disposed with the barrel.
8. The disposable manual pulse type pushing device as claimed in claim 1, wherein the piston assembly further comprises a plug body, one end of the push rod is connected with the plug body, and the end of the other end is provided with a push rod handle.
9. The disposable manual pulse type pushing device as claimed in claim 1, wherein the push rod includes a main support body and an auxiliary support body formed on the main support body, and the auxiliary support body and/or the plurality of second stoppers are extended along a length direction of the main support body and disposed on the main support body.
10. The disposable manual pulse type pusher of claim 9, wherein said main supporter is configured in a cross-type, circular or elliptical structure and said auxiliary supporter is configured in a bar-type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123233222.2U CN216798365U (en) | 2021-12-22 | 2021-12-22 | Disposable manual pulse type pushing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123233222.2U CN216798365U (en) | 2021-12-22 | 2021-12-22 | Disposable manual pulse type pushing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216798365U true CN216798365U (en) | 2022-06-24 |
Family
ID=82054114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123233222.2U Active CN216798365U (en) | 2021-12-22 | 2021-12-22 | Disposable manual pulse type pushing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216798365U (en) |
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2021
- 2021-12-22 CN CN202123233222.2U patent/CN216798365U/en active Active
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