CN114848929A - Novel negative pressure wound therapeutic instrument - Google Patents
Novel negative pressure wound therapeutic instrument Download PDFInfo
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- CN114848929A CN114848929A CN202210442821.5A CN202210442821A CN114848929A CN 114848929 A CN114848929 A CN 114848929A CN 202210442821 A CN202210442821 A CN 202210442821A CN 114848929 A CN114848929 A CN 114848929A
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- 230000001225 therapeutic effect Effects 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 238000009581 negative-pressure wound therapy Methods 0.000 claims description 34
- 206010052428 Wound Diseases 0.000 claims description 17
- 208000027418 Wounds and injury Diseases 0.000 claims description 17
- 230000002093 peripheral effect Effects 0.000 claims description 15
- 230000005669 field effect Effects 0.000 claims description 12
- 239000007788 liquid Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010063560 Excessive granulation tissue Diseases 0.000 description 1
- 206010030113 Oedema Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 210000000416 exudates and transudate Anatomy 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 210000001126 granulation tissue Anatomy 0.000 description 1
- 206010020718 hyperplasia Diseases 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
- 210000001519 tissue Anatomy 0.000 description 1
- 230000029663 wound healing Effects 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3331—Pressure; Flow
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3379—Masses, volumes, levels of fluids in reservoirs, flow rates
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- External Artificial Organs (AREA)
Abstract
The invention discloses a novel negative pressure wound therapeutic apparatus, which comprises an equipment host, a drainage bottle, a pressure sensor and a water level sensor, wherein the equipment host comprises a shell, a display screen, a negative pressure device and a control circuit, the negative pressure device and the control circuit are arranged in the shell, the display screen is arranged on the shell, the display screen and the negative pressure device are respectively connected with the control circuit, the pressure sensor is used for detecting negative pressure data of the negative pressure device, the water level sensor is used for detecting water level data of the drainage bottle, and the pressure sensor and the water level sensor are respectively connected with the control circuit; through setting up pressure sensor and level sensor, negative pressure data through pressure sensor detection negative pressure device, level sensor detects the water level data of drainage bottle to detecting negative pressure data and water level data and showing in the display screen, can be convenient for the user observe whether stable negative pressure that provides of negative pressure wound therapeutic instrument, also be convenient for the user observe the drainage bottle and fill with the drainage liquid.
Description
Technical Field
The invention relates to the technical field of negative pressure wound treatment equipment, in particular to a novel negative pressure wound treatment instrument.
Background
Negative pressure wound therapy is an auxiliary treatment method for promoting wound healing, which is more and more popular in recent years, and is characterized in that negative pressure is applied to the surface of a wound, so that the surface of the wound is uniformly subjected to the negative pressure to be reduced, the effect of draining body fluid can be achieved, local defects of the wound can be filled, excessive exudates are removed, a relatively humid rather than humid environment is provided for wound closure, the edema of tissues around the wound is relieved, and granulation tissue hyperplasia is stimulated.
However, the existing negative pressure wound therapy apparatus cannot effectively observe negative pressure data and drainage data, so that a user cannot determine whether to stably provide negative pressure or not, and cannot determine whether the drainage bottle is filled with drainage fluid and needs to be replaced.
Disclosure of Invention
In view of this, the present invention provides a novel negative pressure wound therapy apparatus, which can solve the defect that the negative pressure data and the drainage data cannot be effectively observed in the conventional negative pressure wound therapy apparatus.
The technical scheme of the invention is realized as follows:
the utility model provides a novel negative pressure wound therapeutic instrument, includes equipment host computer, drainage bottle, pressure sensor and level sensor, the equipment host computer includes casing, display screen, negative pressure device and control circuit install in the casing, the display screen install in on the casing, display screen and negative pressure device respectively with control circuit connects, pressure sensor is used for detecting negative pressure device's negative pressure data, level sensor is used for detecting the water level data of drainage bottle, pressure sensor and level sensor respectively with control circuit connects.
As a further alternative of the novel negative pressure wound therapy apparatus, the novel negative pressure wound therapy apparatus further comprises a button, and the button is mounted on the casing and connected with the control circuit.
As a further alternative of the novel negative pressure wound therapy apparatus, the control circuit comprises a processor, a display circuit, a pressure detection circuit, a water level alarm circuit, a power supply circuit, a switching circuit, a key circuit and a negative pressure motor control circuit, the display circuit, the pressure detection circuit, the water level alarm circuit, the power supply circuit, the switching circuit, the key circuit and the negative pressure motor control circuit are respectively connected with the processor, and the display circuit, the pressure detection circuit, the water level alarm circuit, the switching circuit, the key circuit and the negative pressure motor control circuit are respectively connected with the power supply circuit.
As a further alternative of the novel negative pressure wound therapy apparatus, the processor comprises an STM8S105K6T6C chip and a peripheral circuit thereof.
As a further alternative of the novel negative pressure wound treatment instrument, the display circuit comprises an HT1621B single chip microcomputer and peripheral circuits thereof.
As a further alternative of the novel negative pressure wound therapy apparatus, the pressure detection circuit PSG010S chip and its peripheral circuit.
As a further alternative of the novel negative pressure wound therapy apparatus, the power circuit comprises a conversion circuit and a charging circuit, the conversion circuit comprises an XL1509-5.0E1 chip and a peripheral circuit thereof, and the charging circuit comprises an HM8201 chip and a peripheral circuit thereof.
As a further alternative of the novel negative pressure wound therapy apparatus, the key circuit comprises a first key circuit, a second key circuit and a third key circuit, the first key circuit comprises a first resistor and a first key switch, one end of the first resistor is connected with the power circuit, one end of the first key switch is grounded, the other end of the first resistor and the other end of the first key switch form a common end to be connected with the processor, the second key circuit comprises a second resistor and a second key switch, one end of the second resistor is connected with the power circuit, one end of the second key switch is grounded, the other end of the second resistor and the other end of the second key switch form a common end to be connected with the processor, the third key circuit comprises a third resistor and a third key switch, and one end of the third resistor is connected with the power circuit, one end of the third key switch is grounded, and the other end of the third resistor and the other end of the third key switch form a common end which is connected with the processor.
As a further alternative of the novel negative pressure wound therapy apparatus, the power on/off circuit includes a first diode, a second diode, a third diode, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a field-effect transistor, a first triode and a fourth key switch, one end of the first diode is connected to the power circuit, the other end of the first diode is connected to one end of the fourth resistor and the source electrode of the field-effect transistor, respectively, the drain electrode of the field-effect transistor is connected to the power circuit, the other end of the fourth resistor and the gate electrode of the field-effect transistor are connected to one end of the fifth resistor, the other end of the fifth resistor is connected to one end of the second diode and the collector electrode of the first triode, the other end of the second diode is connected to one end of the third diode and one end of the fourth key switch, respectively, the other end of the third diode is connected with one end of a sixth resistor and one end of a seventh resistor, the other end of the sixth resistor is connected with a power circuit, the other end of the seventh resistor is connected with a processor, the other end of the fourth key switch is grounded, an emitting electrode of the first triode is grounded, a base electrode of the first triode is connected with one end of an eighth resistor and one end of a ninth resistor respectively, the other end of the eighth resistor is connected with the processor, and the other end of the ninth resistor is grounded.
As a further alternative of the novel negative pressure wound therapy apparatus, the negative pressure motor control circuit includes a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a second triode, a third triode and a connector, wherein one end of the tenth resistor is connected to the power circuit, the other end of the tenth resistor is respectively connected to one end of the eleventh resistor and the collector of the second triode, the other end of the eleventh resistor is connected to the connector, the emitter of the second triode is grounded, one end of the twelfth resistor is connected to the power circuit, the other end of the twelfth resistor is respectively connected to the base of the second triode and the collector of the third triode, the emitter of the third triode is grounded, the base of the third triode is respectively connected to one end of the thirteenth resistor and one end of the fourteenth resistor, and the other end of the thirteenth resistor is connected to the processor, the other end of the fourteenth resistor is grounded.
The invention has the beneficial effects that: through setting up pressure sensor and level sensor, negative pressure data through pressure sensor detection negative pressure device, level sensor detects the water level data of drainage bottle to detecting negative pressure data and water level data and showing in the display screen, can be convenient for the user observe whether stable negative pressure that provides of negative pressure wound therapeutic instrument, also be convenient for the user observe the drainage bottle and fill with the drainage liquid.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a block diagram of a novel negative pressure wound treatment apparatus of the present invention;
FIG. 2 is a circuit diagram of a processor of the novel negative pressure wound therapy device of the present invention;
FIG. 3 is a circuit diagram of a display circuit of the novel negative pressure wound therapy device of the present invention;
FIG. 4 is a circuit diagram of a pressure detection circuit in the novel negative pressure wound therapy device of the present invention;
FIG. 5 is a circuit diagram of a switching circuit of the novel negative pressure wound therapy apparatus of the present invention;
FIG. 6 is a circuit diagram of a charging circuit of the novel negative pressure wound therapy device of the present invention;
FIG. 7 is a circuit diagram of a key circuit of the novel negative pressure wound therapy apparatus of the present invention;
FIG. 8 is a circuit diagram of a switching-on/off circuit of the novel negative pressure wound therapy apparatus of the present invention;
FIG. 9 is a circuit diagram of a control circuit of a negative pressure motor of the novel negative pressure wound therapy device;
description of reference numerals: 1. a device host; 2. a drainage bottle; 11. a housing; 12. a display screen; 13. and (6) pressing a key.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-9, a novel negative pressure wound therapeutic instrument, includes equipment host 1, drainage bottle 2, pressure sensor and level sensor, equipment host 1 includes casing 11, display screen 12, negative pressure device and control circuit install in casing 11, display screen 12 install in on the casing 11, display screen 12 and negative pressure device respectively with control circuit connects, pressure sensor is used for detecting negative pressure device's negative pressure data, level sensor is used for detecting the level data of drainage bottle, pressure sensor and level sensor respectively with control circuit connects.
In this embodiment, through setting up pressure sensor and level sensor, detect negative pressure device's negative pressure data through pressure sensor, level sensor detects the water level data of drainage bottle to detect negative pressure data and water level data and show in the display screen, can be convenient for the user observe whether stable negative pressure that provides of negative pressure wound therapeutic instrument, also be convenient for the user observe the drainage bottle and fill with the drainage liquid.
It should be noted that the negative pressure device adopts the vacuum pump, in addition, pressure value and drainage value can be predetermine in control circuit, and show preset pressure value and drainage value in the display screen, negative pressure data and water level data that will gather in real time contrast, can more clearly understand the negative pressure condition and the drainage condition that provide, in addition, the technique of equipment is prior art between equipment host computer and the drainage bottle, equally through setting up the gas outlet on the equipment host computer, set up the air inlet on the drainage bottle, thereby realize providing the effect of negative pressure, owing to be prior art, so do not specifically describe.
Preferably, the novel negative pressure wound therapy apparatus further comprises a button 13, and the button 13 is mounted on the housing 11 and connected with the control circuit.
In the embodiment, by setting the key 13, the working state of the novel negative pressure wound therapy apparatus can be adjusted, for example, the novel negative pressure wound therapy apparatus is turned on or off, and a preset pressure value and a preset drainage value are adjusted; the working modes of the novel negative pressure wound therapy apparatus comprise a continuous mode, a circulation mode and a pressure maintaining mode, the default working mode of the novel negative pressure wound therapy apparatus is the continuous mode, a negative pressure value is set by clicking a key, the required negative pressure value is set, and the power on-off key is pressed to start running until the set negative pressure value is reached; pressing the mode conversion key can make operating mode switch between continuous mode and circulation mode, can show current operating mode on the display screen, and under the circulation mode, novel negative pressure wound therapeutic instrument acquiescence cycle time is: circulating for 5 minutes, maintaining the pressure for 2 minutes, simultaneously, clicking a key to set the negative pressure value according to the requirement by setting the required negative pressure value, and pressing a power on/off key to start running until the set negative pressure value is reached; the pressure maintaining value of the pressure maintaining mode is-30 mmHg at the lowest, the circulation mode is used, if the set working negative pressure value is-100 mmHg or-150 mmHg or-200 mmHg, the working period of 5 minutes is always kept at-100 mmHg or-150 mmHg or-200 mmHg, but the operation of the negative pressure pump is stopped when the pressure maintaining period is carried out for 2 minutes, the negative pressure value is slowly reduced, and the operation of the negative pressure pump is immediately started when the pressure is reduced to-30 mmHg.
Preferably, the control circuit comprises a processor, a display circuit, a pressure detection circuit, a water level alarm circuit, a power circuit, a switching circuit, a key circuit and a negative pressure motor control circuit, wherein the display circuit, the pressure detection circuit, the water level alarm circuit, the power circuit, the switching circuit, the key circuit and the negative pressure motor control circuit are respectively connected with the processor, and the display circuit, the pressure detection circuit, the water level alarm circuit, the switching circuit, the key circuit and the negative pressure motor control circuit are respectively connected with the power circuit.
Preferably, as shown in FIG. 2, the processor includes an STM8S105K6T6C chip and its peripheral circuits.
Preferably, as shown in fig. 3, the display circuit includes a HT1621B single chip microcomputer and its peripheral circuits.
Preferably, as shown in fig. 4, the pressure detection circuit PSG010S chip and its peripheral circuits.
Preferably, the power circuit includes a conversion circuit and a charging circuit, as shown in fig. 5, the conversion circuit includes an XL1509-5.0E1 chip and its peripheral circuit, as shown in fig. 6, the charging circuit includes an HM8201 chip and its peripheral circuit.
Preferably, as shown in fig. 7, the key circuit includes a first key circuit, a second key circuit and a third key circuit, the first key circuit includes a first resistor R48 and a first key switch S1, one end of the first resistor R48 is connected to the power circuit, one end of the first key switch S1 is grounded, the other end of the first resistor R48 and the other end of the first key switch S1 form a common end to be connected to the processor, the second key circuit includes a second resistor R47 and a second key switch S2, one end of the second resistor R47 is connected to the power circuit, one end of the second key switch S2 is grounded, the other end of the second resistor R47 and the other end of the second key switch S2 form a common end to be connected to the processor, the third key circuit includes a third resistor R46 and a third key switch S3, one end of the third resistor R46 is connected to the power circuit, one end of the third key switch S3 is grounded, and the other end of the third resistor R46 and the other end of the third key switch S3 form a common end and are connected to the processor.
Preferably, as shown in fig. 8, the switch circuit includes a first diode SS34, a second diode D7, a third diode D8, a fourth resistor R10, a fifth resistor R11, a sixth resistor R12, a seventh resistor R13, an eighth resistor R8, a ninth resistor R9, a field-effect transistor Q3, a first transistor Q1 and a fourth key switch S4, one end of the first diode SS34 is connected to the power circuit, the other ends of the first diode SS34 are respectively connected to one end of the fourth resistor R10 and the source of the field-effect transistor Q3, the drain of the field-effect transistor Q3 is connected to the power circuit, the other end of the fourth resistor R10 and the gate of the field-effect transistor Q3 are connected to one end of the fifth resistor R11, the other end of the fifth resistor R11 is respectively connected to one end of the second diode D7 and the collector of the first transistor Q1, the other end of the second diode D7 is respectively connected to one end of the first diode D6474 and the fourth key switch S4, the other end of the third diode D8 is connected with one end of a sixth resistor R12 and one end of a seventh resistor R13, the other end of the sixth resistor R12 is connected with a power circuit, the other end of the seventh resistor R13 is connected with a processor, the other end of the fourth key switch S4 is grounded, the emitter of the first triode Q1 is grounded, the base of the first triode Q1 is connected with one end of the eighth resistor R8 and one end of the ninth resistor R9 respectively, the other end of the eighth resistor R8 is connected with the processor, and the other end of the ninth resistor R9 is grounded.
Preferably, as shown in fig. 9, the negative voltage motor control circuit includes a tenth resistor R30, an eleventh resistor R31, a twelfth resistor R29, a thirteenth resistor R27, a fourteenth resistor R28, a second triode Q5, a third triode Q6 and a connector P4, one end of the tenth resistor R30 is connected to the power circuit, the other end of the tenth resistor R30 is connected to one end of the eleventh resistor R31 and the collector of the second triode Q5, the other end of the eleventh resistor R31 is connected to the connector P4, the emitter of the second triode Q5 is grounded, one end of the twelfth resistor R29 is connected to the power circuit, the other end of the twelfth resistor R29 is connected to the base of the second triode Q5 and the collector of the third triode Q6, the emitter of the third triode Q6 is grounded, the base of the third triode Q6 is connected to one end of the thirteenth resistor R27 and one end of the fourteenth resistor R28, the other end of the thirteenth resistor R27 is connected to the processor, the other end of the fourteenth resistor R28 is grounded.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a novel negative pressure wound therapeutic instrument, its characterized in that, including equipment host computer (1), drainage bottle (2), pressure sensor and level sensor, equipment host computer (1) includes casing (11), display screen (12), negative pressure device and control circuit install in casing (11), display screen (12) install in on casing (11), display screen (12) and negative pressure device respectively with control circuit connects, pressure sensor is used for detecting negative pressure device's negative pressure data, level sensor is used for detecting the level data of drainage bottle, pressure sensor and level sensor respectively with control circuit connects.
2. The novel negative pressure wound therapy apparatus according to claim 1, further comprising a button (13), wherein the button (13) is mounted on the housing (11) and connected to the control circuit.
3. The novel negative pressure wound therapy apparatus according to claim 2, wherein the control circuit comprises a processor, a display circuit, a pressure detection circuit, a water level alarm circuit, a power circuit, a switch circuit, a key circuit and a negative pressure motor control circuit, the display circuit, the pressure detection circuit, the water level alarm circuit, the power circuit, the switch circuit, the key circuit and the negative pressure motor control circuit are respectively connected with the processor, and the display circuit, the pressure detection circuit, the water level alarm circuit, the switch circuit, the key circuit and the negative pressure motor control circuit are respectively connected with the power circuit.
4. The novel negative pressure wound therapy apparatus according to claim 3, wherein said processor comprises an STM8S105K6T6C chip and its peripheral circuitry.
5. The novel negative pressure wound treatment instrument according to claim 4, wherein the display circuit comprises a HT1621B single chip microcomputer and peripheral circuits thereof.
6. The novel negative pressure wound therapy apparatus according to claim 5, wherein the pressure detection circuit PSG010S chip and its peripheral circuits.
7. The novel negative pressure wound therapy apparatus according to claim 6, wherein said power supply circuit comprises a switching circuit and a charging circuit, said switching circuit comprises XL1509-5.0E1 chip and its peripheral circuit, and said charging circuit comprises HM8201 chip and its peripheral circuit.
8. The novel negative pressure wound therapy apparatus according to claim 7, wherein the key circuit comprises a first key circuit, a second key circuit and a third key circuit, the first key circuit comprises a first resistor and a first key switch, one end of the first resistor is connected to the power circuit, one end of the first key switch is grounded, the other end of the first resistor and the other end of the first key switch form a common end and are connected to the processor, the second key circuit comprises a second resistor and a second key switch, one end of the second resistor is connected to the power circuit, one end of the second key switch is grounded, the other end of the second resistor and the other end of the second key switch form a common end and are connected to the processor, the third key circuit comprises a third resistor and a third key switch, one end of the third resistor is connected to the power circuit, one end of the third key switch is grounded, and the other end of the third resistor and the other end of the third key switch form a common end which is connected with the processor.
9. The novel negative pressure wound therapy apparatus according to claim 8, wherein the switch circuit comprises a first diode, a second diode, a third diode, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a field effect transistor, a first triode and a fourth key switch, one end of the first diode is connected to the power circuit, the other end of the first diode is connected to one end of the fourth resistor and the source electrode of the field effect transistor, respectively, the drain electrode of the field effect transistor is connected to the power circuit, the other end of the fourth resistor and the gate electrode of the field effect transistor are connected to one end of the fifth resistor, the other end of the fifth resistor is connected to one end of the second diode and the collector electrode of the first triode, respectively, the other end of the second diode is connected to one end of the third diode and one end of the fourth key switch, respectively, the other end of the third diode is connected with one end of a sixth resistor and one end of a seventh resistor, the other end of the sixth resistor is connected with a power circuit, the other end of the seventh resistor is connected with a processor, the other end of the fourth key switch is grounded, an emitting electrode of the first triode is grounded, a base electrode of the first triode is connected with one end of an eighth resistor and one end of a ninth resistor respectively, the other end of the eighth resistor is connected with the processor, and the other end of the ninth resistor is grounded.
10. The novel negative pressure wound therapy apparatus according to claim 9, wherein the negative pressure motor control circuit comprises a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a second triode, a third triode and a connector, wherein one end of the tenth resistor is connected to the power circuit, the other end of the tenth resistor is respectively connected to one end of the eleventh resistor and the collector of the second triode, the other end of the eleventh resistor is connected to the connector, the emitter of the second triode is grounded, one end of the twelfth resistor is connected to the power circuit, the other end of the twelfth resistor is respectively connected to the base of the second triode and the collector of the third triode, the emitter of the third triode is grounded, the base of the third triode is respectively connected to one end of the thirteenth resistor and one end of the fourteenth resistor, and the other end of the thirteenth resistor is connected to the processor, the other end of the fourteenth resistor is grounded.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210442821.5A CN114848929A (en) | 2022-04-25 | 2022-04-25 | Novel negative pressure wound therapeutic instrument |
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| CN202210442821.5A CN114848929A (en) | 2022-04-25 | 2022-04-25 | Novel negative pressure wound therapeutic instrument |
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| CN214550455U (en) * | 2020-12-24 | 2021-11-02 | 遵义医科大学附属医院 | Surgery is with decompression drainage device |
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Application publication date: 20220805 |