CN221243559U - Negative pressure control device of negative pressure drainage device - Google Patents
Negative pressure control device of negative pressure drainage device Download PDFInfo
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- CN221243559U CN221243559U CN202320842714.1U CN202320842714U CN221243559U CN 221243559 U CN221243559 U CN 221243559U CN 202320842714 U CN202320842714 U CN 202320842714U CN 221243559 U CN221243559 U CN 221243559U
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- control device
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- pull rod
- drainage
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 46
- 239000007788 liquid Substances 0.000 claims abstract description 43
- 238000007599 discharging Methods 0.000 claims description 2
- 230000007547 defect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 206010052428 Wound Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000017423 tissue regeneration Effects 0.000 description 1
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Abstract
The utility model discloses a negative pressure control device of a negative pressure drainage device, wherein a liquid discharge hole is arranged at the bottom of an inner cavity of the negative pressure control device, and an opening and closing device is arranged above the liquid discharge hole; and a negative pressure regulating piston is arranged above the opening and closing device. The utility model aims to provide the negative pressure control device of the negative pressure drainage device, which has the advantages of simple and reasonable structure, few accessories and capability of adjusting negative pressure in a large range, can manually adjust a knob to close a liquid discharge hole, is convenient to assemble and produce and is capable of automatically assembling, and overcomes the defects of the prior art.
Description
Technical Field
The utility model relates to the field of medical instruments, in particular to a negative pressure control device of a negative pressure drainage device.
Background
The negative pressure drainage device is widely applied to drainage of residual and exuded liquid in wounds of postoperative patients, and can promote tissue repair.
The prior art means mainly comprises an unadjustable negative pressure drainage device and a small part of the adjustable negative pressure drainage devices. According to long-term research and observation, the non-adjustable negative pressure drainage device is single in function, negative pressure excessively decays in the using process to affect the using effect, the application range is narrow, a few adjustable negative pressure drainage container technologies exist in the current market, due to the fact that the structure is complex, fittings are more, the assembly difficulty is high, automatic assembly production cannot be easily achieved, particularly, the design of a built-in stretching negative pressure adjusting tension spring is used, the assembly difficulty is high, the production efficiency is low, in clinical use, the connecting knob can only control the upward movement of the pressure adjusting piston in practice and cannot control the downward movement of the pressure adjusting piston due to the fact that the stretching spring is connected with the knob and the pressure adjusting piston, the piston can only downwards seal a liquid outlet by means of negative pressure attractive force, negative pressure leakage can be caused by shaking of a bottle body and the piston in the transportation process of the pre-negative pressure drainage device, in addition, due to the fact that the stretching spring design is adopted, the piston movement is unstable and easy to deflect, a stainless steel guide post needs to be added at the front end of the piston, and complex and low-efficiency secondary injection molding is needed to be used.
Disclosure of Invention
The utility model aims to provide the negative pressure control device of the negative pressure drainage device, which has the advantages of simple and reasonable structure, few accessories and capability of adjusting negative pressure in a large range, can manually adjust a knob to close a liquid discharge hole, is convenient to assemble and produce and is capable of automatically assembling, and overcomes the defects of the prior art.
In order to solve the problems in the prior art, the technical scheme provided by the utility model is as follows: a negative pressure control device of a negative pressure drainage device, wherein a liquid discharge hole is arranged at the bottom of an inner cavity of the negative pressure control device, and an opening and closing device is arranged above the liquid discharge hole; and a negative pressure regulating piston is arranged above the opening and closing device.
In a preferred implementation state, the opening and closing device is a rubber pad or a rubber cap or a piston.
In a preferred implementation state, a pull rod is arranged behind the negative pressure regulating piston, an adjusting knob is screwed on the pull rod, and the adjusting knob can control the pull rod to move up and down.
In a preferred implementation state, a pull rod is arranged behind the negative pressure regulating piston, and an adjusting knob is arranged at the tail end of the pull rod and can control the pull rod to rotate and move up and down.
In the preferred implementation state, the negative pressure regulating piston and the upper end of the opening and closing device are tightly assembled in the inner cavity of the negative pressure control device, and negative pressure can be formed when the negative pressure regulating piston is pulled upwards.
In a preferred implementation state, a drainage liquid inlet and a drainage hole are arranged at the bottom of the inner cavity of the shell of the negative pressure control device.
In a preferred implementation state, the negative pressure regulating piston is sleeved on a piston seat with a pull rod at the tail part; the pull rod is provided with threads.
In a preferred implementation state, the negative pressure control device is a component of the negative pressure drainage device, the negative pressure control device is assembled on the upper part of the negative pressure drainage device bottle or the negative pressure drainage device bottle cap, and a liquid discharging hole is arranged in the center of the bottom of the shell of the negative pressure control device and can communicate the space below the opening and closing device with the inner cavity of the negative pressure drainage device bottle; the negative pressure drainage tube is arranged on the outer side of the negative pressure control device shell and is communicated with a space below the opening and closing device through a drainage liquid inlet on one side of the bottom of the negative pressure control device shell.
In a preferred implementation state, the opening and closing device seals the bottom of the inner cavity of the negative pressure control device.
In a preferred implementation state, scale marks and numerical values are marked on the pull rod; or the adjusting knob screwed with the pull rod is marked with scale marks and numerical values.
All of the above spatial orientations are described in terms of a normal upright condition of the product.
Compared with the solutions in the prior art, the utility model has the advantages that:
First, simple structure accessory is few, reasonable in design.
Secondly, negative pressure values can be set arbitrarily in a large range.
Thirdly, the liquid outlet can be forcibly sealed by manually adjusting the knob.
Fourth, simplify the assembly and assembly process and realize the automatic assembly and raise the manual assembly efficiency.
Drawings
The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the utility model, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present utility model, should fall within the ambit of the technical disclosure.
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
fig. 2 is a schematic structural diagram of a further embodiment of the present utility model.
The numerical designations in the drawings indicate: 1. a negative pressure regulating piston; 2. a piston; 3. a drainage liquid inlet; 4. a negative pressure drainage tube; 5. an adjustment knob; 6. a pull rod; 7. A piston seat; 8. a balance piston seat; 9. a negative pressure control device housing; 10. a liquid discharge hole; 11. a negative pressure drainage device bottle cap; 12. a negative pressure drainage device bottle body; 13. and (5) a rubber cap.
Detailed Description
The above-described aspects are further described below in conjunction with specific embodiments. It should be understood that these examples are illustrative of the utility model and are not intended to limit the scope of the utility model. The implementation conditions employed in the examples may be further adjusted according to the conditions of the particular manufacturer, and the implementation conditions not noted are typically those in conventional production.
Example 1
As shown in fig. 1, the utility model provides a negative pressure control device of a negative pressure drainage device, wherein a liquid discharge hole 10 is arranged at the bottom of an inner cavity of the negative pressure control device, and an opening and closing device arranged above the liquid discharge hole 10 is a piston 2; a negative pressure regulating piston 1 is arranged above the piston 2; the piston 2 can open and close the liquid discharge hole 10; the negative pressure control device is assembled with a negative pressure drainage device of pre-negative pressure, and the drainage tube is led to the inner cavity of a negative pressure control device shell 9 at the lower part of the piston 2, namely a pressure regulating chamber; an adjusting knob 5 is provided to adjust the up-down position of the piston 2.
In actual use, the piston 2 is in a dynamic balance state, namely the negative pressure of the pressure regulating chamber is constant, the negative pressure value of the pressure regulating chamber depends on the air pressure between the negative pressure regulating piston 1 and the piston 2, and the air pressure between the negative pressure regulating piston 1 and the piston 2 can be set up by regulating the upper and lower positions of the negative pressure regulating piston 1 in the inner cavity of the negative pressure control device shell 9 through the regulating knob 5 because the negative pressure in the negative pressure drainage device is preset relatively stable.
In this example, the spring fitting is not provided, so that the fitting is reduced, and the piston assembly is relatively simple, so that the manual assembly can be simplified, and the automatic assembly is easy to realize.
Example two
As shown in fig. 1, the utility model provides a negative pressure control device of a negative pressure drainage device, wherein a liquid discharge hole 10 is arranged at the bottom of an inner cavity of the negative pressure control device, and a piston 2 of an opening and closing device is arranged above the liquid discharge hole 10; a negative pressure regulating piston 1 is arranged above the opening and closing device; the piston 2 is arranged at the bottom of the inner cavity of the negative pressure control device; the piston 2 is connected with a balance piston seat 8; the negative pressure regulating piston 1 is sleeved on a piston seat 7 with a pull rod 6 at the tail part; the head of the upper negative pressure regulating piston 1 and the tail of the lower piston 2 are tightly assembled at the bottom of the inner cavity of the negative pressure control device, and negative pressure is formed between the negative pressure regulating piston 1 and the piston 2 when the negative pressure regulating piston 1 is pulled upwards; the pull rod 6 is provided with external threads, the pull rod 6 is connected with an adjusting knob 5 in a screwed mode, and the adjusting knob 5 can control the pull rod 6 to move up and down; the pull rod 6 is marked with scale marks and numerical values; the negative pressure control device is a component of a negative pressure drainage device, and is assembled at the upper end of a negative pressure drainage device bottle 11, and the inner cavity of the lower part of the switch piston 2 is communicated with the inner cavity of the negative pressure drainage device bottle 11 through a liquid discharge hole 10; the liquid discharge hole 10 is arranged at the center of the bottom of the negative pressure control device shell 9; the outer side of the negative pressure control device shell 9 is provided with a negative pressure drainage tube 4, and the negative pressure drainage tube 4 is communicated with an inner cavity below the piston 2 in the negative pressure control device shell 9 through a drainage liquid inlet 3 at one side of the bottom of the negative pressure control device shell 9; the pull rod 6 is marked with scale marks and numerical values, or the adjusting knob 5 screwed with the pull rod is marked with scale marks and numerical values.
The balance piston seat 8 can prevent the phenomenon that a single rubber plug (piston) moves in the cavity to be blocked.
In the example, the pull rod 6 can be controlled to move up and down by rotating the adjusting knob 5 on the pull rod 6, and the corresponding negative pressure value can be obtained by setting the upward moving distance of the pull rod 6.
Other reference embodiment one.
Example III
As shown in fig. 1, a negative pressure control device of a negative pressure drainage device is provided with a liquid discharge hole 10 at the bottom of an inner cavity of the negative pressure control device; the inner cavity of the negative pressure control device is provided with 2 pistons, the upper negative pressure regulating piston 1 and the lower piston 2 capable of opening and closing the liquid discharge hole 10; a pull rod 6 is arranged at the tail of the negative pressure regulating piston 1, the pull rod 6 is screwed above the piston 2, an adjusting knob 5 is arranged at the tail end of the pull rod 6, and the adjusting knob 5 can control the pull rod 6 to rotate and move up and down; the lower end of the upper negative pressure regulating piston 1 and the upper end of the lower piston 2 are tightly assembled at the bottom of the inner cavity of the negative pressure control device, and negative pressure is formed between the negative pressure regulating piston 1 and the piston 2 when the negative pressure regulating piston 1 is pulled upwards; a drainage liquid inlet 3 and a drainage hole 10 are arranged at the bottom of the negative pressure control device shell 9; the negative pressure regulating piston 1 is sleeved on a piston seat 7 with a pull rod 6 at the tail part; the negative pressure control device is a component of the negative pressure drainage device and is assembled on the bottle cap 11 of the negative pressure drainage device; the outer side of the negative pressure control device shell 9 is provided with a negative pressure drainage tube 4, and the negative pressure drainage tube 4 is communicated with a space below the negative pressure regulating piston 1 in the inner cavity of the negative pressure control device shell 9 through a drainage liquid inlet 3 at one side of the bottom of the negative pressure control device shell 9; the pull rod 6 is marked with scale marks and numerical values.
In this example, the adjusting knob 5 arranged at the tail end of the pull rod 6 can be rotated to drive the pull rod 6, and the pull rod 6 is provided with external threads which are screwed with an internal thread support piece arranged on or fixed to the negative pressure control device, so that the pull rod 6 can move up and down to drive the negative pressure regulating piston 1 to move up and down through rotation, thereby controlling the negative pressure of the inner cavity below the piston 2, and the drainage tube is communicated with the inner cavity below the piston 2, so that the output negative pressure of the drainage tube can be set at will through the adjusting knob 5, and meanwhile, the piston 1 can be moved down to force the piston 2 to close the drainage hole 10.
Other reference embodiments are provided.
Example IV
As shown in fig. 2, a negative pressure control device of a negative pressure drainage device is arranged on a negative pressure drainage device which is preset with high negative pressure and comprises a negative pressure drainage device bottle body 12; the bottom of the inner cavity of the negative pressure control device is provided with a liquid discharge hole 10, an opening and closing device is arranged above the liquid discharge hole 10, the opening and closing device is a rubber pad or a rubber cap 13, and when the liquid discharge hole 10 is opened, the inner cavity below the rubber pad or the rubber cap 13 is communicated with the inner cavity of a negative pressure drainage device bottle body 12 through the liquid discharge hole 10; a negative pressure regulating piston 1 is arranged above the opening and closing device; the periphery of the rubber pad or the rubber cap 13 can be bonded and sealed with glue to the bottom of the inner cavity of the negative pressure control device; the negative pressure drainage tube 4 is arranged on the outer side of the negative pressure control device shell 9, and the negative pressure drainage tube 4 is communicated with a negative rubber pad or an inner cavity space below the rubber cap 13, namely a pressure regulating chamber, through a drainage liquid inlet 3 on one side of the bottom of the negative pressure control device shell 9; the negative pressure regulating piston 1 is sleeved on a piston seat 7 with a pull rod 6 at the tail part; the pull rod 6 is tubular and is provided with internal threads, the tubular pull rod 6 is screwed with a bolt-shaped adjusting knob 5, and the output negative pressure of the drainage tube can be set at will by rotating the adjusting knob 5 to adjust the space position of the negative pressure regulating piston 1 in the inner cavity 9 of the negative pressure control device shell.
In actual use, the negative pressure in the drainage tube can be set by adjusting the position of the negative pressure regulating piston 1 in the inner cavity of the negative pressure control device shell 9, when the negative pressure regulating piston 1 is adjusted to move upwards, the center of the rubber pad or the rubber cap 13 protrudes towards the direction of the negative pressure regulating piston 1 due to the negative pressure effect, the liquid discharge hole 10 is opened, the inner cavity of the negative pressure drainage device bottle body 12 is communicated with the rubber pad or the pressure regulating chamber below the rubber cap 13 through the liquid discharge hole 10, and the negative pressure of the pressure regulating chamber is increased to pull the rubber pad or the rubber cap 13 downwards to cover the liquid discharge hole 10 so as to seal the liquid discharge hole 10. Because the negative pressure is preset in the negative pressure drainage device bottle body 12, the negative pressure of the pressure regulating chamber, which is in a dynamic balance state, can be set. The adjusting knob 5 can also be moved downwards to press the rubber pad or the rubber cap 13 downwards to forcibly close the liquid discharge hole 10 by the negative pressure adjusting piston 1.
The pull rod 6 of the present embodiment may also adopt the technical solutions of the second and third embodiments.
In the embodiment, the performance is more reliable and stable because of no spring fitting, and the piston assembly is relatively simple, so that the manual assembly can be simplified and the automatic assembly is easy to realize.
The above describes in detail a negative pressure control device of a negative pressure drainage device provided by the utility model, and the principle and the implementation of the utility model are described herein, and the description of the above embodiments is only for helping to understand the method and the core idea of the utility model; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present utility model, the present description should not be construed as limiting the present utility model in view of the above.
Claims (10)
1. The negative pressure control device of the negative pressure drainage device is characterized in that a liquid discharge hole is arranged at the bottom of an inner cavity of the negative pressure control device which is arranged at or can be assembled at the upper part of a negative pressure drainage device bottle or on a negative pressure drainage device bottle cap, and an opening and closing device is arranged above the liquid discharge hole; a negative pressure regulating piston is arranged above the opening and closing device; the liquid discharging hole can communicate the space below the opening and closing device with the inner cavity of the negative pressure drainage device bottle; the space below the opening and closing device is communicated with the negative pressure drainage tube through a drainage liquid inlet of the negative pressure control device shell.
2. The negative pressure control device of a negative pressure drainage device according to claim 1, wherein the opening and closing device is a rubber pad or a rubber cap or a piston.
3. The negative pressure control device of the negative pressure drainage device according to claim 1, wherein a pull rod is arranged behind the negative pressure regulating piston, an adjusting knob is screwed on the pull rod, and the adjusting knob can control the pull rod to move up and down.
4. The negative pressure control device of the negative pressure drainage device according to claim 1, wherein a pull rod is arranged behind the negative pressure regulating piston, and an adjusting knob is arranged at the tail end of the pull rod and can control the pull rod to rotate and move up and down.
5. The negative pressure control device of the negative pressure drainage device according to claim 1, wherein the negative pressure regulating piston and the upper end of the opening and closing device are tightly assembled in the inner cavity of the negative pressure control device, and negative pressure can be formed when the negative pressure regulating piston is pulled upwards.
6. The negative pressure control device of the negative pressure drainage device according to claim 1, wherein a drainage liquid inlet is arranged at the bottom of an inner cavity of a shell of the negative pressure control device.
7. The negative pressure control device of the negative pressure drainage device according to claim 1, wherein the negative pressure regulating piston is sleeved on a piston seat with a pull rod at the tail part; the pull rod is provided with threads.
8. The negative pressure control device of the negative pressure drainage device according to claim 1, wherein the negative pressure control device is a component of the negative pressure drainage device, and a liquid discharge hole is arranged in the center of the bottom of a shell of the negative pressure control device; the negative pressure drainage tube is arranged on the outer side of the negative pressure control device shell and is communicated with a space below the opening and closing device through a drainage liquid inlet on one side of the bottom of the negative pressure control device shell.
9. The negative pressure control device of claim 1, wherein the opening and closing device seals the bottom of the cavity of the negative pressure control device.
10. The negative pressure control device of a drainage device according to any one of claims 3 and 4, wherein the pull rod is marked with graduation marks and numerical values; or the adjusting knob screwed with the pull rod is marked with scale marks and numerical values.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320842714.1U CN221243559U (en) | 2023-04-17 | 2023-04-17 | Negative pressure control device of negative pressure drainage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320842714.1U CN221243559U (en) | 2023-04-17 | 2023-04-17 | Negative pressure control device of negative pressure drainage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221243559U true CN221243559U (en) | 2024-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320842714.1U Active CN221243559U (en) | 2023-04-17 | 2023-04-17 | Negative pressure control device of negative pressure drainage device |
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| Country | Link |
|---|---|
| CN (1) | CN221243559U (en) |
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2023
- 2023-04-17 CN CN202320842714.1U patent/CN221243559U/en active Active
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