CN110787511A

CN110787511A - Filter cartridge

Info

Publication number: CN110787511A
Application number: CN201911216642.4A
Authority: CN
Inventors: 周克东; 栗亚
Original assignee: Meixin Medical Devices (shanghai) Co Ltd
Current assignee: Meixin Medical Devices (shanghai) Co Ltd
Priority date: 2019-12-03
Filing date: 2019-12-03
Publication date: 2020-02-14

Abstract

The embodiment of the invention provides a filter box, which is used in medical waste liquid collecting equipment and comprises: the shell of the metal base forms a first cavity and a discharge end which is used for connecting the medical waste liquid collecting equipment and discharging the medical waste liquid in the first cavity to the medical waste liquid collecting equipment; the discharge end is provided with a drip-proof valve; the metal top cover is detachably arranged on the metal base and is provided with at least one collecting end which is used for connecting an external suction pipeline and guiding medical waste liquid into the first cavity; the metal filtering device is arranged in the first cavity and is used for filtering the medical waste liquid led in by the collecting end; the metal filtering device is also provided with a valve fixing device, and the valve fixing device is connected with the anti-leakage valve and fixes the anti-leakage valve. Through the new structural design, the filter box made of metal can realize the effects of drip prevention and sealing and realize the repeated use of the filter box.

Description

Filter cartridge

Technical Field

The invention relates to the field of medical equipment, in particular to a filter box, which is used for medical waste liquid collecting equipment.

Background

During the performance of a particular surgical procedure, liquid, semi-solid and solid waste fluids, including in particular body fluids, such as blood, and perfusion solutions introduced into the surgical site during the procedure, are inevitably produced, and in addition, solid and semi-solid waste fluids produced during the procedure include tissue fragments and small pieces of surgical material that may remain in the body site. Ideally, the waste fluid is collected once it is produced so that it does not contaminate the surgical site or become a biohazard to the operating room or other site where the surgical procedure is performed.

In the prior art, various waste liquid collecting systems exist for medical staff to collect waste liquid generated in the operation process after the operation is performed or after the operation. The principle is mainly that waste liquid generated at the operation site is sucked into a specific collection container by the suction force generated by a vacuum source. That is, upon system activation, the suction force generated by the vacuum source reaches the surgical site, drawing waste fluid through the tubing that the surgical site contacts into a specific collection container.

In the prior art, the filter cartridge connected to the waste collecting device through the cannula is usually disposable, and the waste liquid collecting container is originally intended to be reusable in order to realize the surgical waste liquid collecting device, and a reusable filter cartridge is urgently needed as a part tightly connected with the waste liquid collecting device.

Disclosure of Invention

The technical problem to be solved by the embodiments of the present invention is to provide a filter cartridge that can be reused by steam sterilization.

In order to solve the above technical problem, an embodiment of the present invention provides a filter cassette for use in a medical waste liquid collection apparatus, including:

the shell of the metal base forms a first cavity and a discharge end which is used for connecting the medical waste liquid collecting equipment and discharging the medical waste liquid in the first cavity to the medical waste liquid collecting equipment;

the discharge end is provided with a drip-proof valve;

the metal top cover is detachably arranged on the metal base and is provided with at least one collecting end which is used for connecting an external suction pipeline and guiding medical waste liquid into the first cavity;

the metal filtering device is arranged in the first cavity and is used for filtering the medical waste liquid led in by the collecting end; the metal filtering device is also provided with a valve fixing device, and the valve fixing device is connected with the anti-leakage valve and fixes the anti-leakage valve.

Further, the metal base comprises an open end and a closed end, and the open end is matched with the metal top cover to close the first inner cavity; the closed end is located at the discharge end to mount the drip resistant valve.

Furthermore, the metal base is provided with a first connecting part, the metal top cover is provided with a second connecting part, and the first connecting part and the second connecting part are detachably connected;

further, the first connecting portion is a fixing button, the second connecting portion is a fixing bayonet, and the fixing bayonet is matched with the fixing button.

Further, the metal top cover comprises a top wall, an outer side wall and an inner side wall; the collecting end is arranged on the top wall, the fixed bayonet is arranged on the outer side wall, and the inner side wall and the outer side wall form a sealing clamping groove.

Further, the open end includes an extension portion, and a seal ring is disposed between the extension portion, the outer sidewall and the inner sidewall.

Further, the expansion part is a curled edge of the housing.

Further, the metal filter device comprises a filter bottom wall, a filter side wall extending upwards from the filter bottom wall, and a valve fixing device connected to the filter bottom wall, wherein the valve fixing device comprises at least one extension part connected to the filter bottom wall, and a press-fixing part connected to the extension part to fix the drip-proof valve.

Furthermore, the anti-leakage valve comprises a valve seat and a valve core, the valve seat is accommodated in the receiving end, the valve core is accommodated in the discharge end, and the valve seat is provided with an annular clamping groove.

Furthermore, the press-fixing part is an annular clamping head which can be inserted into the annular clamping groove.

Further, the extension part is a cylindrical extension rod, the extension part is welded to the annular chuck, and the number of the extension parts is two.

Furthermore, a third connecting portion capable of lifting the metal filtering device is arranged in the metal top cover, and a fourth connecting portion matched with the third connecting portion is arranged on the metal filtering device.

Furthermore, the third connecting portion are hooks, and the fourth connecting portion are handles.

Furthermore, the fixing button comprises a first clamping groove matched and connected with the fixing bayonet and a second clamping groove used for fixing the collecting end cover matched and connected with the collecting end.

Furthermore, the drip-proof valve and the sealing ring are made of silica gel materials.

Furthermore, the metal base, the metal top cover and the metal filtering device are all made of stainless steel.

The embodiment of the invention has the following beneficial effects: make the filter cartridge that the metal was made can realize antidrip and sealed effect through new structural design, can be used to utilize the negative pressure to realize the waste liquid collecting device that the waste liquid was collected to can carry out the steam disinfection through the filter cartridge to the metal material, thereby realize the used repeatedly of filter cartridge, and then save the use quantity of filter cartridge greatly, more economic environmental protection reduces patient's use cost simultaneously.

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, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is within the scope of the present invention for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

Fig. 1 is a schematic perspective view of a filter cassette according to the present invention.

Fig. 2 is a schematic structural diagram of a metal base of a filter cassette provided by the present invention.

Fig. 3 is a schematic structural diagram of a metal top cover of the filter box provided by the invention.

Fig. 4 is a schematic structural diagram of a metal filter device of a filter cassette provided by the invention.

Fig. 5 is a schematic structural diagram of a metal filter device attached to a metal top cover of a filter box provided by the invention.

Fig. 6 is a schematic structural view of the collecting end cap provided by the present invention.

Fig. 7 is a front view of a filter cassette provided by the present invention.

Fig. 8 is a cross-sectional view of the filter cassette of fig. 7 taken along section a-a.

Fig. 9 is a partially enlarged view of the seal ring mounting structure shown in fig. 8.

Detailed Description

The following description of the embodiments refers to the accompanying drawings that illustrate specific embodiments in which the invention may be practiced. In the present invention, directional terms such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", etc. refer to directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1-4, fig. 1 illustrates a filter cassette 10 according to an embodiment of the present invention, wherein the filter cassette 10 is used in a medical waste collection device (not shown). In this embodiment, the filter cartridge 10 includes a metal base 100, a metal filter device 300 disposed in the metal base 100, and a metal top cover 200 detachably connected to the metal base 100. Specifically, the method comprises the following steps: the housing 101 of the metal base 100 forms a first cavity 130 and a discharge end 110 for connecting the medical waste liquid collecting device and discharging the medical waste liquid in the first cavity 130 to the medical waste liquid collecting device; at least one collection end 210 for connecting to an external suction line and directing medical waste into first chamber 130; and a metal filter 300 disposed in the first cavity 130 for filtering the medical waste introduced from the collection end 210; and a metal top cover 200 detachably attached to the metal base 100. The collection end 210 is disposed on the metal header 200, and as shown in fig. 5, the metal filter device 300 is removably attached to the metal header 200. In this embodiment, the collecting end 210 is disposed on the metal top cover 200. The collection end 210 comprises a first front port 211, a first rear port 213 and a first cannula 212 for connecting the first front port 211 and the first rear port 213, as shown in fig. 8.

Referring to fig. 2 and 8, the metal base 100 shown in fig. 2 and 8 includes a housing 101, the housing 101 forming a first interior cavity 130, the first interior cavity 130 configured to receive a metal filter device 300 for filtering medical waste. In this embodiment, the first lumen 130 has a height greater than its diameter, and its diameter is set within a range that is easy to grasp with one hand. In addition, the metal base 100 is provided with a first connecting portion 110 at the housing 101 at the upper end of the first inner cavity 130, and the first connecting portion 110 is detachably connected with a second connecting portion 210 at the metal top cover 200. First connecting portion 110 is fixed button, and second connecting portion 210 is fixed bayonet socket, and specific fixed bayonet socket is L shape breach, forms fixedly and dismantles through rotatory and first connecting portion 110. The first inner cavity 130 has a first bottom wall 131, and the first bottom wall 131 is a circular truncated cone structure and forms an inclined plane for converging liquid.

Specifically, referring to fig. 3 and 4, the metal top cover 200 includes a top wall 201, the top wall 201 extends axially downward to form an outer side wall 202 and an inner side wall 203, and the height of the outer side wall 202 is greater than the height of the inner side wall 203. A sealing slot 204 is formed between the outer sidewall 202 and the inner sidewall 203. In this embodiment, the top wall 201 and the inner sidewall 203 define a second interior chamber 230, and the collection end 210 communicates with the second interior chamber 230 through a second rear port 213. When there are a plurality of collecting ends 210, a separating ridge is provided in the second inner cavity 230 to separate the second rear ports 213, so that the medical waste liquid entering from different collecting ends 210 can not interfere with each other before changing the liquid feeding direction, in this example, two collecting ends 210 are provided, and three or four collecting ends 210 can be provided. The second connecting portion 210 is disposed on the outer sidewall 202.

Referring to fig. 3-5, a third connecting portion 240 capable of lifting the metal filter 300 is further disposed inside the second cavity 230 on the inner side of the top wall 201 of the metal top cover 200, and the metal filter 300 is provided with a fourth connecting portion 340 coupled to the third connecting portion 240. In this embodiment, the third connecting portion 240 is a hook, the fourth connecting portion 340 is a handle, and when the metal top cover 200 is removed, the fourth connecting portion 340 is pulled by the third connecting portion 240, so that the metal filter device 300 can be taken out without contacting the metal filter device 300. In other embodiments, the third connecting portion 240 and the fourth connecting portion 340 may adopt other detachable structures or hanging structures, and may also adopt other deformation modes for fixing, stabilizing and easily detaching the hook and the handle, which is not redundant here. Since the filter box 10 of the present invention is reusable and easy to steam sterilize, it is required to reduce the dead space in its structure and achieve a better sterilizing effect with a simple structure. Meanwhile, the hook and handle structure has the advantages that the metal top cover 200 and the metal filtering device 300 are easy to mount and dismount, and the metal top cover 200 and the metal filtering device 300 can be directly taken away under the condition that a large amount of samples are needed, and the metal filtering device 300 can be easily taken down to sample.

The filter box 10 is further provided with collecting end caps 610 which can be matched with the collecting ends 210, and the number of the collecting end caps 610 is the same as that of the collecting ends 210. Referring to fig. 6 to 8, the collecting end cap 610 is connected to the fixing ring 640 through the tie 630, and the fixing ring 640 is fixed to the fixing button, i.e., the first connecting portion 120, wherein the fixing button includes a first engaging groove 121 coupled to the fixing bayonet and a second engaging groove 122 for fixing the collecting end cap 610 coupled to the collecting end 210, and in particular, the fixing ring 640 is fixed to the second engaging groove 122. In addition, the collecting end cap 610 is provided with at least one operating part 620, in this embodiment, the operating part 620 is a semicircular lug for plugging and unplugging the collecting end cap 610, and preferably, at least two operating parts 620 are symmetrically provided.

Referring to fig. 4 and 8, the metal filter device 300 has a filter sidewall 310 and a filter bottom wall 320, wherein the filter sidewall 310 and the filter bottom wall 320 are both provided with filter holes 301, and at least one overflow window 330 is provided on the filter sidewall 310, the number of the overflow windows 330 is two in the present embodiment, and in other embodiments, the number of the overflow windows 330 may be one or more, which is not illustrated herein. Since the opening of the overflow window 312 is large, the overflow window 312 is disposed at the upper end of the filtering sidewall 310 in order not to affect the filtering effect.

Referring to fig. 7 to 9, fig. 7 is a front view of the filter cassette 10, fig. 8 is a sectional view of a section a-a of the filter cassette shown in fig. 7, and fig. 9 is a partial schematic view of a seal ring coupling structure of fig. 8. The collection end 210 is connected to an external suction line (not shown), the discharge end 110 is connected to a medical waste collection device, the metal top cover 200 is connected to the metal base 100, and the metal filter device 300 can be attached to the metal top cover 200, wherein the metal filter device 300 is a cylindrical filter basket in this embodiment. After the medical waste liquid collecting device is started, the medical waste liquid enters the collecting end 210 through the external suction pipeline and flows into the second inner cavity 230, after the waste liquid enters the metal filtering device 300, the liquid flows out from the filtering holes 301, and other tissues are remained in the metal filtering device 300. Liquid can enter the discharge end 110 through the liquid path between the filter bottom wall 320 and the first bottom wall 131, and can also flow through the liquid path between the housing 101 and the filter side wall 310. Wherein, referring to fig. 7, the housing 101 forms a first interior cavity 130, the structure being such that, even if the filter bottom wall 320 of the metal filter device 300 is clogged with tissue, filtered liquid can enter the medical waste collection device through the liquid path between the filter side wall 310 and the housing 101. Preferably, the bottom of the filtering sidewall 310 of the metal filtering device 300 is further provided with a supporting sidewall 370, the supporting sidewall 370 is used for enabling the metal filtering device 300 to be stabilized in the first cavity 130 to form a liquid path between the filtering bottom wall 320 and the first bottom wall 131, and after the filtering bottom wall 320 is blocked, the liquid can enter the discharge end 110 through the gap between the filtering sidewall 310 and the casing 101 in the government.

Referring to fig. 2 and 9, the metal base 100 further includes a discharge end 110 communicating with the first cavity 130, and the discharge end 110 may be formed by extending the first bottom wall 131 downward. Referring to fig. 8, the metal base 100 includes an open end 140 and a closed end 111, the open end 140 cooperates with the metal top cover 200 to close the first inner cavity 130; the open end 140 includes an expanded portion 102, a sealing ring 500 is disposed between the expanded portion 102, the outer sidewall 202 and the inner sidewall 203, the sealing ring 500 enables sealing between the metal top cover 200 and the metal base 100, and the expanded portion 102 is a curled edge in the first cavity 130 of the housing 101 to increase a contact area between the sealing ring 500 and the expanded portion 102 so as to better support the sealing ring 500 for better sealing effect. To enable steam sterilization, the sealing ring 500 is made of a silicone material. The closed end 111 is located at the discharge end 110 for installing the drip-proof valve 400, the inner diameter of the closed end 111 is smaller than the inner diameter of the discharge pipe 112, specifically, the closed end 111 is formed by inward folding at the outlet of the discharge end 110, and the closed end 111 forms an annular step for preventing the drip-proof valve 400. To enable steam sterilization, the drip resistant valve 500 is made of a silicone material.

Referring to fig. 4 and 8, the metal filter device 300 further includes a valve fixing device connected to the filter bottom wall 320, the valve fixing device including at least one extension part 350 connected to the filter bottom wall 320, and a press-fixing part 360 connected to the extension part 350 to fix the drip-proof valve 400. The drip-proof valve 400 includes a valve seat 410 accommodated in the receiving end 111 and a valve core 420 accommodated in the discharge end 110, the valve seat 410 is provided with an annular clamping groove 411, the press-fixing portion 360 is an annular clamping head capable of being inserted into the annular clamping groove 411, the extension part 350 is a cylindrical extension rod, the extension part is welded on the annular clamping head, and the number of the extension parts 350 is two. During assembly, the drip-proof valve 400 is placed at the receiving end 111, the press-fixing portion 360 is inserted into the annular clamping groove 411 after the metal filtering device 300 is placed, and the weight of the metal filtering device 300 is pressed on the drip-proof valve 400 by the two extension parts 350, so that the drip-proof valve 400 is fixed by the valve fixing device. The extension member 350 and the press-fastening portion 360 may also adopt other deformation structures that achieve the same or similar functions, and are not limited herein.

In this embodiment, all structures except the sealing ring 500 and the drip-proof valve 400, such as the metal base, the metal top cover, and the metal filtering device, are made of metal material, preferably stainless steel material.

While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A filter cassette for use in a medical waste collection device, comprising:

the discharge end is provided with a drip-proof valve;

2. A filter cassette as recited in claim 1, wherein said metal base includes an open end and a closed end, said open end cooperating with said metal top to close said first interior cavity; the closed end is located at the discharge end to mount the drip resistant valve.

3. A filter cassette as claimed in claim 2, wherein said metal base is provided with a first connection portion and said metal top cover is provided with a second connection portion, said first and second connection portions being detachably connectable.

4. A filter cassette as claimed in claim 3, wherein said first connection portion is a fixing button and said second connection portion is a fixing bayonet, said fixing bayonet mating with said fixing button.

5. A filter cassette as claimed in claim 4, wherein said metal top cover comprises a top wall, an outer side wall and an inner side wall; the collecting end is arranged on the top wall, the fixed bayonet is arranged on the outer side wall, and the inner side wall and the outer side wall form a sealing clamping groove.

6. A filter cassette as claimed in claim 5, wherein said open end includes an extension, and a seal is provided between said extension, said outer side wall and said inner side wall.

7. A filter cassette as claimed in claim 6, wherein said extension is a bead of said housing.

8. A filter cassette as claimed in claim 2, wherein said metal filter means comprises a filter bottom wall, a filter side wall extending upwardly from said filter bottom wall and said valve fixing means connected to said filter bottom wall, said valve fixing means comprising at least one extension member connected to said filter bottom wall and a press-fit portion connected to said extension member to fix said drip-proof valve.

9. The filter cassette of claim 8, wherein the drip resistant valve comprises a valve seat received in the female end and a valve element received in the male end, the valve seat being provided with an annular groove.

10. A filter cassette as claimed in claim 9, wherein said press-fit portion is an annular clip insertable into said annular slot.

11. A filtration cassette of claim 10, wherein said extension member is a cylindrical extension rod, said extension member is welded to said annular bayonet, and said extension members are two in number.

12. A filter cassette as recited in claim 11, wherein said metal top cover has a third connector portion formed therein for lifting said metal filter device, said metal filter device having a fourth connector portion formed therein for mating with said third connector portion.

13. A filter cassette as claimed in claim 12, wherein said third connecting portion is a hook and said fourth connecting portion is a handle.

14. A filter cassette as claimed in claim 13, wherein said retaining knob includes a first catch for engaging said retaining bayonet and a second catch for retaining a collection end cap for engaging a collection end.

15. A filter cassette as claimed in claim 6, wherein said drip resistant valve and said sealing ring are made of silicone material.

16. A filtration cassette as recited in any of claims 1-15, wherein said metal base, metal top cover and metal filtration device are made of stainless steel.