CN207640683U - Nutrient solution pusher - Google Patents
Nutrient solution pusher Download PDFInfo
- Publication number
- CN207640683U CN207640683U CN201720769320.2U CN201720769320U CN207640683U CN 207640683 U CN207640683 U CN 207640683U CN 201720769320 U CN201720769320 U CN 201720769320U CN 207640683 U CN207640683 U CN 207640683U
- Authority
- CN
- China
- Prior art keywords
- push rod
- hole
- pair
- inner core
- nutrient solution
- 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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Abstract
A kind of nutrient solution pusher comprising：Cylinder, push rod, piston head, sliding block；Piston head includes sealing shroud, inner core；The second end of inner core, which reach out to, is provided at least a pair of support arms, and each pair of support arm of described at least a pair of support arms is located directly opposite to each other at the periphery close to inner core；Each support arm has been respectively formed on pilot hole；The sliding block there are one slideably being inserted in each pilot hole；The first end of the sliding block is provided with friction cushion, and the second end of the sliding block is provided with the first hole；The first end of push rod is formed at least a pair of of branch piece, and each pair of branch piece at least a pair of of branch piece is respectively formed at the two opposite sides of the first end of push rod；Each branch on piece is formed with second hole；One first hole corresponds to second hole；There are one rigid connecting rods for connection between first hole and corresponding one second hole；It is further supported by spring between the second end of the inner core and the first end of push rod.
Description
Technical field
The utility model is related to a kind of medical instrument more particularly to a kind of nutrient solution pushers.
Background technology
The patient of gastric tube inserting, feed need the stomach that nutrient solution is pushed to patient by nutrient solution pusher via stomach tube
In.Nutrient solution should not be too fast during push.The too fast of nutrient solution push is easy to cause that gastric capacity in a short time is excessive to lead to stomach
Expansion easily causes Reflexive hypotention, heart rate to decline；In addition vomiting is easily caused, regurgitation of food causes accidentally to inhale so as to cause suction
Entering property pneumonia.
Utility model content
In view of the above problems, the utility model is directed to a kind of nutrient solution pusher, when the push too quickly of user
When nutrient solution, pusher being capable of automatic retarding.
For this purpose, the utility model proposes a kind of nutrient solution pushers comprising：Cylinder, push rod, piston head, sliding block；
Piston head includes sealing shroud, inner core；Inner core is formed by rigid plastics；Inner core is covered in its periphery by the sealing shroud
Lid, the second end of inner core, which reach out to, is provided at least a pair of support arms, each pair of support arm of described at least a pair of support arms
It is located directly opposite to each other at the periphery close to inner core；Each support arm has been respectively formed on pilot hole；It can be slided in each pilot hole
The sliding block there are one inserting dynamicly；
The first end of the sliding block is provided with friction cushion, and the second end of the sliding block is provided with the first hole；
The first end of push rod is formed at least a pair of of branch piece, and each pair of branch piece at least a pair of of branch piece is respectively formed at
The two opposite sides of the first end of push rod；Each branch on piece is formed with second hole；One first hole corresponds to described in one
Second hole；
There are one rigid connections for connection between first hole and corresponding one second hole
The first end of bar, the rigid connecting rod is rotatably inserted in first hole, and the second end of the rigid connecting rod can
It is rotationally inserted in second hole；
It is further supported by spring between the second end of the inner core and the first end of push rod；Spring is not being pushed away
When the thrust of bar, rigid connecting rod favours push rod；
Piston head is contained in cylinder, and sealing shroud is contacted with cylinder inner surface, is formed and is sealed to nutrient solution；
When pushing nutrient solution, on push rod, the first end of push rod pushes inner core by spring thrust；Bullet
Spring can be shortened by thrust, and thus the first end of push rod is close to inner core second end, the folder between rigid connecting rod and push rod
Angle becomes larger, and thus pushes sliding block sliding so that friction cushion is closely contacted with cylinder inboard wall, and resistance to sliding increases, and thus hinders
Piston head is hindered quickly to move.
The utility model also proposes another nutrient solution pusher comprising：Cylinder, push rod, piston head；
Piston head includes sealing shroud, inner core；Inner core is formed by rigid plastics；Inner core is covered in its periphery by the sealing shroud
Lid, the second end of inner core, which reach out to, is provided at least a pair of support arms, each pair of support arm of described at least a pair of support arms
It is located directly opposite to each other at the periphery close to inner core；Each support arm is made of spring leaf；
Friction cushion is formed on each support arm, the second end for the cushion that rubs is formed with the first hole；
The first end of push rod is formed at least a pair of of branch piece, and each pair of branch piece at least a pair of of branch piece is respectively formed at
The two opposite sides of the first end of push rod；Each branch on piece is formed with second hole；One first hole corresponds to described in one
Second hole；
There are one rigid connections for connection between first hole and corresponding one second hole
The first end of bar, the rigid connecting rod is rotatably inserted in first hole, and the second end of the rigid connecting rod can
It is rotationally inserted in second hole；
It is further supported by spring between the second end of the inner core and the first end of push rod；Spring is not being pushed away
When the thrust of bar, rigid connecting rod favours push rod；
Piston head is contained in cylinder, and sealing shroud is contacted with cylinder inner surface, is formed and is sealed to nutrient solution；
When pushing nutrient solution, on push rod, the first end of push rod pushes inner core by spring thrust；Bullet
Spring can be shortened by thrust, and thus the first end of push rod is close to inner core second end, the folder between rigid connecting rod and push rod
Angle becomes larger, and thus support arm is bent outwardly so that friction cushion is closely contacted with cylinder inboard wall, and resistance to sliding increases, thus
Piston head is hindered quickly to move.
Preferably, for spring when not by the thrust of push rod, the angle of rigid connecting rod and push rod is 30-60 degree.
Preferably, when spring is fully compressed, the angle of rigid connecting rod and push rod is 90 degree.
Preferably, described at least a pair of support arms is specially two pairs of support arms；At least a pair of of branch piece is specially two pairs
Branch piece.
Preferably, two pairs of branch pieces are in crossing distribution, accordingly, two pairs of support arm omnidirectional distributions.
It is that rigid connecting rod can make friction pad be tightly attached on cylinder inboard wall when thrust is excessive, resistance to sliding increases, natural
So that the sliding speed of piston lowers, nutrient solution is effectively prevent to be pushed into stomach tube too quickly.
Description of the drawings
Fig. 1 is the structural schematic diagram of the first state of the nutrient solution pusher first embodiment of the utility model；
Fig. 2 is the structural schematic diagram of the second state of the nutrient solution pusher first embodiment of the utility model；
Fig. 3 a are the side view of the first inner core of the nutrient solution pusher in Fig. 1；
Fig. 3 b are the vertical view of the first inner core of the nutrient solution pusher of Fig. 3 a；
Fig. 4 a are the side view of second of inner core of the nutrient solution pusher in Fig. 1；
Fig. 4 b are the vertical view of second of inner core of the nutrient solution pusher of Fig. 4 a；
Fig. 5 a are the side view of sliding block；
Fig. 5 b are the front view of sliding block；
Fig. 6 a are the front view of push rod；
Fig. 6 b are the side view of push rod first end；
Fig. 7 is the structural schematic diagram of the first state of the nutrient solution pusher second embodiment of the utility model；
Fig. 8 is the structural schematic diagram of the second state of the nutrient solution pusher second embodiment of the utility model；
Fig. 9 is the side view of another inner core of the nutrient solution pusher of Fig. 7.
Specific implementation mode
In the following, the nutrient solution pusher of the utility model is described in detail in conjunction with attached drawing.
It is as shown in Figs. 1-2 the first embodiment of the nutrient solution pusher of the utility model comprising：Cylinder 10 pushes away
Bar 20, piston head, sliding block 24.
Piston head includes sealing shroud 22, inner core 21；Inner core 21 is formed by rigid plastics；Inner core 21 is in its periphery by sealing shroud
22 coverings, the second end of inner core 21, which reach out to, is provided at least a pair of support arms 23, at least a pair of support arms 23 it is every
It is located directly opposite to each other support arm 23 at the periphery of inner core 21；Each support arm 23 has been respectively formed on pilot hole 23a；
Sliding block 24 there are one slideably being inserted in each pilot hole 23a.Between 23 inside of each support arm and the second end of inner core 21 also
Reinforcing rib 26 can be further set.
The first end of sliding block 24 is provided with friction cushion 25, and the second end of sliding block 24 is provided with the first hole 24a.
The first end of push rod 20 is formed at least a pair of of branch piece 27, which distinguishes
It is formed in the two opposite sides of the first end of push rod 20；Second hole 27a there are one being formed in each branch piece 27；One the first hole 24a
A corresponding second hole 27a；The first end of push rod 20 is formed with pushing hands 30.
There are one rigid connecting rods for connection between a first hole 24a and second hole of a corresponding 27a
28, the first end of rigid connecting rod 28 is rotatably inserted in the first hole 24a, and the second end of rigid connecting rod 28 is rotationally
It is inserted in the second hole 27a.
It is further supported by spring 29 between the second end and the first end of push rod 20 of inner core 21；Spring 29 is not having
By push rod 20 thrust when, rigid connecting rod favours push rod 20.
Piston head is contained in cylinder 10, and sealing shroud 22 is contacted with 10 inner surface of cylinder, is formed and is sealed to nutrient solution.
When pushing nutrient solution, thrust on push rod 20, the first end of push rod 20 by spring 29 to inner core 21 into
Row pushes；Spring 29 can be shortened by thrust, and thus the first end of push rod 20 is close to 21 second end of inner core, rigid connecting rod
Angle between 28 and push rod 20 becomes larger, as shown in Fig. 2, thus push sliding block 24 slide so that friction cushion 25 closely with
10 inner wall of cylinder contacts, and resistance to sliding increases, and thus piston head is hindered quickly to move.
It is as Figure 7-8 the second embodiment of the nutrient solution pusher of the utility model comprising：Cylinder 10 pushes away
Bar 20, piston head.
Piston head includes sealing shroud 22, inner core 21；Inner core 21 is formed by rigid plastics；Inner core 21 is in its periphery by sealing shroud
22 coverings, the second end of inner core 21, which reach out to, is provided at least a pair of support arms 23, and at least a pair of support arms 23 is each pair of
Support arm 23 is located directly opposite to each other at the periphery of inner core 21；Each support arm 23 is made of spring leaf.
Friction cushion 25 is formed on each support arm 23, the second end of friction cushion 25 is formed with the first hole 24a.
The first end of push rod 20 is formed at least a pair of of branch piece 27, and at least each pair of branch piece 27 in a pair of branch piece 27 is distinguished
It is formed in the two opposite sides of the first end of push rod 20；Second hole 27a there are one being formed in each branch piece 27；One the first hole 24a
A corresponding second hole 27a.The first end of push rod 20 is formed with pushing hands 30.
There are one rigid connecting rods for connection between a first hole 24a and second hole of a corresponding 27a
28, the first end of rigid connecting rod 28 is rotatably inserted in the first hole 24a, and the second end of rigid connecting rod 28 is rotationally
It is inserted in the second hole 27a.
It is further supported by spring 29 between the second end and the first end of push rod 20 of inner core 21；Spring 29 is not having
By push rod 20 thrust when, rigid connecting rod 28 favours push rod 20.
Piston head is contained in cylinder 10, and sealing shroud 22 is contacted with 10 inner surface of cylinder, is formed and is sealed to nutrient solution.
When pushing nutrient solution, thrust on push rod 20, the first end of push rod 20 by spring 29 to inner core 21 into
Row pushes；Spring 29 can be shortened by thrust, and thus the first end of push rod 20 is close to 21 second end of inner core, rigid connecting rod
Angle between 28 and push rod 20 becomes larger, and thus support arm 23 is bent outwardly so that friction cushion 25 closely with cylinder inboard wall
Contact, resistance to sliding increase, and thus piston head are hindered quickly to move.
For spring 29 when not by the thrust of push rod 20, rigid connecting rod 28 and the angle of push rod are 30-60 degree.
When spring is fully compressed, the angle of rigid connecting rod and push rod 20 is 90 degree, i.e., rigid connecting rod hangs down at this time
Directly in push rod 20.
Support arm 23 is preferably two pairs of support arms 23；Accordingly, branch piece 27 is also two pairs of branch pieces 27.
Two pairs of branch pieces 27 are in crossing distribution, accordingly, two pairs of 23 omnidirectional distributions of support arm.
In this way, being supported to push rod in X, Y both direction so that push rod is firm, and the friction cushion that is multiplied
Frictional force.
Before pushing push rod, friction cushion and cylinder inboard wall keep preset distance, or be only lightly with cylinder inner wall
Contact, it is mainly the frictional force of piston head and cylinder inner wall to promote the resistance being subject at this time.
In push, spring is compressed so that friction cushion is moved to the direction of cylinder inner wall, or is further pressed in cylinder
On inner wall, but the frictional force still very little that friction cushion generates at this time, promote the resistance being subject at this time mainly and be still piston head with
The frictional force of cylinder inner wall.
When the thrust of push reaches predetermined value, friction cushion be tightly resisted against on an inner wall, promote at this time by
Resistance include the frictional force of piston head and cylinder inner wall, the frictional force of rub cushion and cylinder inner wall, and rub cushion and cylinder inner wall
Frictional force be main frictional force.
By above-mentioned structure, when thrust reaches predetermined value, propelling resistance can greatly increase, and thus limit nutrient solution quilt
It quickly propels.
In order to enable friction pad modification of cylinder caused by the pressure of cylinder inner wall does not interfere between sealing shroud and cylinder inner wall
Sealing, friction cushion it is remote enough at a distance from sealing shroud.
Claims (10)
1. a kind of nutrient solution pusher, it is characterised in that including：Cylinder, push rod, piston head, sliding block；
Piston head includes sealing shroud, inner core；Inner core is formed by rigid plastics；Inner core is covered in its periphery by the sealing shroud, interior
The second end of core, which reach out to, is provided at least a pair of support arms, and each pair of support arm of described at least a pair of support arms is each other just
It is positioned close at the periphery of inner core over the ground；Each support arm has been respectively formed on pilot hole；It is slideably inserted in each pilot hole
There are one the sliding blocks；
The first end of the sliding block is provided with friction cushion, and the second end of the sliding block is provided with the first hole；
The first end of push rod is formed at least a pair of of branch piece, and each pair of branch piece at least a pair of of branch piece is respectively formed at push rod
First end two opposite sides；Each branch on piece is formed with second hole；One first hole corresponds to one described second
Hole；
There are one rigid connecting rod, institutes for connection between first hole and corresponding one second hole
The first end for stating rigid connecting rod is rotatably inserted in first hole, and the second end of the rigid connecting rod is rotationally
It is inserted in second hole；
It is further supported by spring between the second end of the inner core and the first end of push rod；Spring is not by push rod
When thrust, rigid connecting rod favours push rod；
Piston head is contained in cylinder, and sealing shroud is contacted with cylinder inner surface, is formed and is sealed to nutrient solution；
When pushing nutrient solution, on push rod, the first end of push rod pushes inner core by spring thrust；Spring by
It can shorten to thrust, thus close to inner core second end, the angle between rigid connecting rod and push rod becomes the first end of push rod
Greatly, sliding block sliding is thus pushed so that friction cushion is closely contacted with cylinder inboard wall, and resistance to sliding increases, and thus hinders to live
Chock plug quickly moves.
2. nutrient solution pusher as described in claim 1, it is characterised in that：Spring is not when by the thrust of push rod, just
The angle of property connecting rod and push rod is 30-60 degree.
3. nutrient solution pusher as described in claim 1, it is characterised in that：When spring is fully compressed, rigid connecting rod
Angle with push rod is 90 degree.
4. nutrient solution pusher as described in claim 1, it is characterised in that：Described at least a pair of support arms is specially two pairs of branch
Brace；At least a pair of of branch piece is specially two pairs of branch pieces.
5. nutrient solution pusher as claimed in claim 4, it is characterised in that：Two pairs of branch pieces are in crossing distribution, corresponding
Ground, two pairs of support arm omnidirectional distributions.
6. a kind of nutrient solution pusher, it is characterised in that including：Cylinder, push rod, piston head；
Piston head includes sealing shroud, inner core；Inner core is formed by rigid plastics；Inner core is covered in its periphery by the sealing shroud, interior
The second end of core, which reach out to, is provided at least a pair of support arms, and each pair of support arm of described at least a pair of support arms is each other just
It is positioned close at the periphery of inner core over the ground；Each support arm is made of spring leaf；
Friction cushion is formed on each support arm, the second end for the cushion that rubs is formed with the first hole；
The first end of push rod is formed at least a pair of of branch piece, and each pair of branch piece at least a pair of of branch piece is respectively formed at push rod
First end two opposite sides；Each branch on piece is formed with second hole；One first hole corresponds to one described second
Hole；
There are one rigid connecting rod, institutes for connection between first hole and corresponding one second hole
The first end for stating rigid connecting rod is rotatably inserted in first hole, and the second end of the rigid connecting rod is rotationally
It is inserted in second hole；
It is further supported by spring between the second end of the inner core and the first end of push rod；Spring is not by push rod
When thrust, rigid connecting rod favours push rod；
Piston head is contained in cylinder, and sealing shroud is contacted with cylinder inner surface, is formed and is sealed to nutrient solution；
When pushing nutrient solution, on push rod, the first end of push rod pushes inner core by spring thrust；Spring by
It can shorten to thrust, thus close to inner core second end, the angle between rigid connecting rod and push rod becomes the first end of push rod
Greatly, thus support arm is bent outwardly so that friction cushion is closely contacted with cylinder inboard wall, and resistance to sliding increases, and thus hinders
Piston head quickly moves.
7. nutrient solution pusher as claimed in claim 6, it is characterised in that：Spring is not when by the thrust of push rod, just
The angle of property connecting rod and push rod is 30-60 degree.
8. nutrient solution pusher as claimed in claim 6, it is characterised in that：When spring is fully compressed, rigid connecting rod
Angle with push rod is 90 degree.
9. nutrient solution pusher as claimed in claim 6, it is characterised in that：Described at least a pair of support arms is specially two pairs of branch
Brace；At least a pair of of branch piece is specially two pairs of branch pieces.
10. nutrient solution pusher as claimed in claim 9, it is characterised in that：Two pairs of branch pieces are in crossing distribution, corresponding
Ground, two pairs of support arm omnidirectional distributions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720769320.2U CN207640683U (en) | 2017-06-28 | 2017-06-28 | Nutrient solution pusher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720769320.2U CN207640683U (en) | 2017-06-28 | 2017-06-28 | Nutrient solution pusher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207640683U true CN207640683U (en) | 2018-07-24 |
Family
ID=62886063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720769320.2U Expired - Fee Related CN207640683U (en) | 2017-06-28 | 2017-06-28 | Nutrient solution pusher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207640683U (en) |
-
2017
- 2017-06-28 CN CN201720769320.2U patent/CN207640683U/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: 20180724 Termination date: 20190628 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |