Collecting device of negative pressure wound therapy system
By designing a detachable collection device and connection unit in the negative pressure wound therapy device, the problem of inconvenient replacement of the liquid storage device is solved, improving the ease of use and safety of the device.
Patent Information
- Application Number
- CN202511926838.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-17
- Publication Date
- 2026-03-24
AI Technical Summary
The existing negative pressure wound therapy device's fluid storage device is inconvenient to replace, which can easily lead to bacterial infection and machine damage.
A system comprising a machine body, a connecting unit, and a collection device was designed. The system guides the object to be extracted from inside the dressing to the collection device through a one-way valve and a flexible guide tube. The collection device is designed for quick replacement by being detachable and reconfigurable, thus preventing bacterial infiltration.
It enables easy replacement of consumables, reduces the risk of bacterial infection, and extends the service life of the machine.
Smart Images
Figure CN121714786A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to an improved design of a consumable replacement device for a negative pressure wound therapy device, and in particular to a design structure that guides an object to be extracted from inside a dressing to a collection device via a connecting unit. Background Technology
[0002] Negative pressure wound therapy (NPWT) devices are widely used for both chronic and acute wounds. With technological advancements, miniaturized and portable devices are constantly being developed. The NPWT technology mainly uses dressings or gauze as filling materials, suction cups, and drainage tubes connected to a negative pressure source (pump) to form a complete negative pressure treatment system. The system continuously drains the fluid oozing from the wound into a reservoir (canister). It is currently widely used in the treatment of patients with simple wounds.
[0003] The function of the reservoir is to collect wound fluid and exudate, playing a crucial role in negative pressure wound therapy systems. It filters bacteria and odors, preventing cross-infection, and uses internally placed gel or absorbent material to solidify the removed material. Furthermore, it assists doctors and nurses in monitoring and managing the amount of exudate from the patient's wound and assessing wound healing. In particular, the reservoir's airtight design not only maintains a sterile, negative pressure environment but also reduces direct contact between bacteria and the wound, effectively lowering the risk of secondary infection for the patient.
[0004] Therefore, proposing a liquid storage device with a simplified structure and easier replacement is one of the important projects that the industry is currently eager to invest research and development resources to improve. Summary of the Invention
[0005] This invention provides a collection device for a negative pressure wound therapy system, which is an improved design to solve the problem of inconvenient replacement of consumables in existing conventional methods.
[0006] According to some embodiments of the present invention, the collection device of the negative pressure wound therapy system described above includes: a machine body, at least one connecting unit, a dressing, and a collection device. The machine body has a drive source. The connecting unit has a one-way valve and is used to form a connection interface between the machine body and the dressing. The collection device is disposed between the machine body and the dressing, and is adjacent to and abuts the side of the machine body. The one-way valve is located between the machine body and the collection device. When the drive source of the machine body is activated, the object to be extracted is adsorbed inside the dressing through the connecting unit, and then guided to the collection device through the connecting unit.
[0007] In some embodiments, the connecting unit consists of a guide tube body made of a flexible material.
[0008] In some embodiments, the connecting unit extends through the inside of the collecting device, thereby forming a first tube and a second tube respectively.
[0009] In some embodiments, the collecting device is fixed to the connecting unit in a detachable assembly manner.
[0010] In some embodiments, the collection device includes an absorbent material for adsorbing and collecting objects to be extracted.
[0011] According to some embodiments of the present invention, the collection device of the negative pressure wound therapy system described above includes: a machine body, at least one connecting unit, a dressing, and a housing. The machine body has a drive source. The connecting unit has a one-way valve and forms a connection interface between the machine body and the dressing. The housing is disposed between the machine body and the dressing, and is adjacent to and abuts the side of the machine body. The housing contains a collection device, and the one-way valve is located between the machine body and the collection device. When the drive source of the machine body is activated, the object to be extracted from inside the dressing is adsorbed by the connecting unit, and then guided to the collection device by the connecting unit.
[0012] In some embodiments, the connecting unit consists of a guide tube body made of a flexible material.
[0013] In some embodiments, the connecting unit extends through the inside of the collecting device, thereby forming a first tube and a second tube respectively.
[0014] In some embodiments, the collecting device is fixed to the connecting unit in a detachable assembly manner.
[0015] In some embodiments, the collection device includes an absorbent material for adsorbing and concentrating the object to be extracted.
[0016] Compared to existing technologies, the collection device of the negative pressure wound therapy system of the present invention features a drive source within the machine body; a one-way valve via at least one connecting unit; a dressing provided, with the connecting unit forming a connection interface between the machine body and the dressing; and a collection device positioned between the machine body and the dressing, adjacent to and abutting the side of the machine body, with the one-way valve located between the machine body and the collection device. When the drive source of the machine body is activated, the collection device of the negative pressure wound therapy system of the present invention, through the connecting unit, adsorbs the object to be extracted from inside the dressing and guides it into the collection device. When the collection device is full, the patient or caregiver can quickly replace the old collection device with a new one using the easy disassembly design of the present invention, thus solving the inconvenience of replacing consumables and preventing damage to the machine body due to bacteria or mucus seeping into the machine. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the first embodiment of the collection device of the negative pressure wound therapy system of the present invention.
[0018] Figure 2 This is a three-dimensional schematic diagram of the first embodiment of the collection device of the negative pressure wound therapy system of the present invention.
[0019] Figure 3 This is a schematic diagram of the second embodiment of the collection device of the negative pressure wound therapy system of the present invention.
[0020] Figure 4 This is a three-dimensional schematic diagram of a single tube of the second embodiment of the collection device of the negative pressure wound therapy system of the present invention.
[0021] Figure 5 This is a two-tube three-dimensional schematic diagram of the second embodiment of the collection device of the negative pressure wound therapy system of the present invention.
[0022] Figure 6 This is a schematic diagram of the patient's usage status in the second embodiment of the collection device of the negative pressure wound therapy system of the present invention.
[0023] Explanation of icon numbers 100 Negative Pressure Wound Treatment System 110 Machine Body 120 connection unit 121 Check Valve 122 Spring Clip 123 First tube body 124 Second tube body 125 Third tube body 130 dressings 140 Collection Device 150 outer casing 160 patients' calves Detailed Implementation
[0024] Please refer to this together. Figure 1 and Figure 2 The negative pressure wound therapy system 100 of this invention includes: a machine body 110; at least one connecting unit 120; a dressing 130; and a collection device 140.
[0025] The machine body 110 has a drive source that provides negative pressure supplementation pressure to the negative pressure wound therapy system 100, thereby enabling the wound end of the negative pressure wound therapy system 100 to maintain a certain negative pressure value and ensure good airtightness of the wound end.
[0026] The connecting unit 120 is composed of a guide tube made of flexible material, and a one-way valve 121 is provided between the machine body 110 and the connecting unit 120 to prevent the object to be extracted from flowing into the machine body 110.
[0027] The connecting unit 120 extends through the inside of the collecting device 140, forming a first tube 123 and a second tube 124 respectively. The first tube 123 and the second tube 124 of the connecting unit 120 are tightly fixed between the machine body 110 and the dressing 130 by at least one spring clip 122 device.
[0028] The dressing 130 is composed of a suction cup device and a foam device, wherein the foam device is usually made of a synthetic material of polyvinyl alcohol (PVA) and polyurethane (PU), and the dressing 130 absorbs the object to be extracted from the patient's wound.
[0029] The collection device 140 is disposed between the machine body 110 and the dressing 130, and its position is adjacent to and close to the side of the machine body 110. In this embodiment, the collection device 140 uses a spring clip 122 to fix the first tube 123 and the second tube 124 of the connecting unit 120 between the machine body 110 and the dressing 130. However, the connection unit 120 and the collection device 140 are designed to be fixed in a way that can be quickly disassembled and assembled, such as by snap hooks, groove and protrusion fitting, Velcro, etc. Any other method is acceptable and is not limited to the method of this embodiment.
[0030] In addition, absorbent material can be placed inside the collection device 140. When the connecting unit 120 pressurizes and guides the object to be extracted from the dressing 130 into the collection device 140, the absorbent material adsorbs the object, greatly increasing the capacity of the collection device 140.
[0031] Other forms of negative pressure wound therapy systems 100 are described below. Components that are the same as or similar to those in the previous embodiment are indicated by the same or similar symbols and will not be described in detail again. The main differences between the different embodiments will be described below.
[0032] Please refer to this together. Figure 3 and Figure 4 The main difference between this embodiment and the previous embodiment is that the collection device 140 is provided with an outer shell 150, which includes: a machine body 110; at least one connecting unit 120; a dressing 130; the collection device 140 and the outer shell 150.
[0033] The outer casing 150 is disposed between the machine body 110 and the dressing 130, and is adjacent to and attached to the side of the machine body 110. The outer casing 150 has a collection device 140 inside, and a one-way valve 121 is located between the machine body 110 and the collection device 140. When the drive source of the machine body 110 is started, the object to be extracted inside the dressing 130 is adsorbed through the connecting unit 120, and then the object to be extracted is guided into the collection device 140 through the connecting unit 120.
[0034] The outer casing 150 is disposed on the outer layer of the collection device 140 in a covering manner, and it is made of plastic or metal shell material, which can increase the airtightness and protection function of the collection device 140. The method of disassembling and assembling the outer casing 150 and the collection device 140 is the same as that of disassembling and assembling the connecting unit 120 and the collection device 140 in the previous embodiment. It is also by means of snap hooks, groove and protrusion fitting, Velcro, etc., and any other combination and fixing method is not limited to the method of this embodiment.
[0035] Please see Figure 5 When the wound area of an injured patient is large, a large area of dressing 130 must be covered on the wound. In this case, using the design of the connecting unit 120 of the present invention, it can be set up in a double tube side by side, in addition to the original first tube 123 and second tube 124 ( Figure 5 In addition to the third tube 125 and the fourth tube (not shown in the figure), there are also extensions.
[0036] By extending the dual tubes of the connecting unit 120 in a parallel manner, the adsorption efficiency of the connecting unit 120 in extracting the object to be extracted from the dressing 130 is effectively increased, avoiding bacterial infection of the patient's wound and the dressing. At the same time, it can also shorten the start-up time of the machine body 110 and increase the service life of the machine.
[0037] Please see Figure 6 This is a simulated schematic diagram of the collection device 140 of the negative pressure wound therapy system of the present invention applied to a patient. When the wound is located on the patient's lower leg 160, the dressing 130 is first placed on the outer surface of the wound on the patient's lower leg 160. Then, the machine body 110 is activated to apply pressure. The pressure source drives the connecting unit 120 to absorb the object to be extracted (e.g., bacteria, mucus) inside the dressing 130. After the object to be extracted is extracted through the connecting unit 120, it is guided to the collection device 140.
[0038] As described above, in the negative pressure wound therapy system of this embodiment, after the drive source of the machine body 110 is started, the collection device absorbs the object to be extracted from inside the dressing 130 through the connection unit 120, and then guides the object to be extracted into the collection device 140 through the connection unit 120. When the collection device 140 is full, the patient or caregiver can quickly replace the old collection device 140 with a new one using the easy disassembly design of this invention, thus solving the inconvenience of replacing consumables and preventing damage to the machine body 110 due to bacteria or mucus seeping into the machine.
[0039] Although the present invention has been disclosed above by way of embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the claims.
Claims
1. A collection device for a negative pressure wound therapy system, characterized in that, Include: The machine itself has a driving source; At least one connection unit, the connection unit having a one-way valve; The dressing, wherein the connecting unit forms a connection interface between the machine body and the dressing; and A collection device is disposed between the machine body and the dressing, and is adjacent to and attached to the side of the machine body; the one-way valve is located between the machine body and the collection device. When the drive source of the machine body is started, the object to be extracted inside the dressing is adsorbed through the connection unit, and then the object to be extracted is guided to the collection device through the connection unit.
2. The collection device of the negative pressure wound therapy system according to claim 1, characterized in that, The connecting unit is composed of a guide tube made of a flexible material.
3. The collection device of the negative pressure wound therapy system according to claim 1, characterized in that, The connecting unit extends through the inside of the collecting device, forming a first tube and a second tube respectively.
4. The collection device of the negative pressure wound therapy system according to claim 1, characterized in that, The collecting device is fixed to the connecting unit in a detachable and combinable manner.
5. The collection device of the negative pressure wound therapy system according to claim 1, characterized in that, The collection device includes an absorbent material used to adsorb and concentrate the object to be extracted.
6. A collection device for a negative pressure wound therapy system, characterized in that, Include: The machine itself has a driving source; At least one connection unit, the connection unit having a one-way valve; The dressing, wherein the connecting unit is used to form a connection interface between the machine body and the dressing; and An outer casing is disposed between the machine body and the dressing, and is adjacent to and attached to the side of the machine body. The outer casing has a collection device inside, and the one-way valve is located between the machine body and the collection device. When the drive source of the machine body is started, the object to be extracted inside the dressing is adsorbed through the connection unit, and then the object to be extracted is guided to the collection device through the connection unit.
7. The collection device of the negative pressure wound therapy system according to claim 6, characterized in that, The connecting unit is composed of a guide tube made of a flexible material.
8. The collection device of the negative pressure wound therapy system according to claim 6, characterized in that, The connecting unit extends through the inside of the collecting device, forming a first tube and a second tube respectively.
9. The collection device of the negative pressure wound therapy system according to claim 6, characterized in that, The collecting device is fixed to the connecting unit in a detachable and combinable manner.
10. The collection device of the negative pressure wound therapy system according to claim 6, characterized in that, The collection device includes an absorbent material used to adsorb and concentrate the object to be extracted.