An aspirator

Abstract

This utility model discloses a suction device, belonging to the field of medical devices, comprising: a catheter lumen, which internally has a positive pressure chamber and a negative pressure chamber that are not interconnected, the central axis of the positive pressure chamber being parallel to the central axis of the negative pressure chamber; and a suction head, internally having a channel one and a channel two that are not interconnected, the suction head having a proximal end and a distal end. When the catheter lumen is connected to the proximal end of the suction head: the positive pressure chamber is connected to one of the channels one or two, and the negative pressure chamber is connected to the other of the channels one or two; channel one penetrates through channel two within the suction head and communicates with the outside from the distal end; convection holes are arranged around the outer wall of the suction head, and the convection holes are connected to channel two. Through the above configuration, this utility model can simultaneously perform flushing and suction operations on the area to be cleaned during treatment, thereby improving treatment efficiency and reducing the risk of infection for medical personnel during the cleaning process.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to an aspirator. Background Technology

[0002] A suction device is used to remove bleeding, exudate, pus, and contents from thoracic organs during surgery, making the surgical procedure clearer and reducing the chance of contamination. The principle of a suction device is very simple: by creating a negative pressure state at its suction head, atmospheric pressure forces the material outside the suction head towards it, thus achieving the "suction" effect.

[0003] Currently, the suction heads used in surgery are simple hollow tubes. During the procedure, small particles such as bone fragments or meat scraps are often drawn into the tube along with blood and other fluids, causing blockages and rendering the suction device ineffective. In such cases, forceps or cleaning rods are needed to remove the blockage, inevitably affecting the smooth progress of the surgery and prolonging the operation time. Furthermore, while some suction devices now have a flushing function, with interfaces for both flushing and suction, current suction heads cannot perform simultaneous flushing and negative pressure suction.

[0004] Therefore, a suction device capable of simultaneously performing negative pressure suction and rinsing of dirt is designed. This suction device is specifically a suction device. Utility Model Content

[0005] To overcome the problems mentioned in the background art, the present invention adopts the following technical solution:

[0006] A suction device includes: a catheter lumen containing a positive pressure chamber and a negative pressure chamber that are not interconnected, the central axis of the positive pressure chamber being parallel to the central axis of the negative pressure chamber; a suction head containing a channel one and a channel two that are not interconnected, the suction head having a proximal end and a distal end, wherein when the catheter lumen is connected to the proximal end of the suction head: the positive pressure chamber is connected to one of the channels one or two, and the negative pressure chamber is connected to the other of the channels one or two; the channel one penetrates the channel two within the suction head and communicates with the outside from the distal end; a convection hole is arranged around the outer wall of the suction head, the convection hole communicating with the channel two.

[0007] Furthermore, the convection holes are arranged in a linear array along the axial direction of the suction head, and a filter layer a is arranged around the outer wall of the suction head, which covers the convection holes; the positive pressure chamber is connected to the first channel, and the negative pressure chamber is connected to the second channel.

[0008] Furthermore, it also includes a peristaltic pump, at least one of the peristaltic pumps being connected to the positive pressure chamber, and at least one of the peristaltic pumps being connected to the negative pressure chamber.

[0009] Alternatively, unlike the above scheme, the convection holes are also distributed in a linear array along the axial direction of the suction head, and a filter layer b is provided at the distal end of the suction head, the filter layer b covering the first channel; the positive pressure chamber is connected to the second channel, and the negative pressure chamber is connected to the first channel.

[0010] Alternatively, unlike the above scheme, the distal end is connected to an arc-shaped cover a covering channel one, the arc-shaped cover a having multiple sets of grids arranged in a ring array, and a filter layer c is attached to the arc-shaped cover a; the positive pressure chamber is connected to channel two, and the negative pressure chamber is connected to channel one.

[0011] Alternatively, unlike the above scheme, the distal end is connected to an arc-shaped cover b covering channel one, and the arc-shaped cover b is provided with multiple through-holes, the central axes of any two of the jet holes are not parallel to each other, a filter layer d is arranged around the outer wall of the suction head, and the filter layer d covers the convection hole; the positive pressure chamber is connected to channel one, and the negative pressure chamber is connected to channel two.

[0012] Alternatively, unlike the above scheme, the distal end is provided with a puncture end a communicating with channel one, the positive pressure chamber is communicating with channel two, and the negative pressure chamber is communicating with channel one.

[0013] Alternatively, unlike the above scheme, the distal end is provided with a puncture end b communicating with channel one, a filter layer e is provided around the outer wall of the suction head, the positive pressure chamber is communicating with channel one, and the negative pressure chamber is communicating with channel two.

[0014] Alternatively, unlike the above scheme, the distal end is provided with a connecting pipe a connected to channel one, the positive pressure chamber is connected to channel two, and the negative pressure chamber is connected to channel one.

[0015] Alternatively, unlike the above scheme, the distal end is provided with a connecting pipe b communicating with channel one, a filter layer f is provided around the outer wall of the suction head, the positive pressure chamber is communicating with channel one, and the negative pressure chamber is communicating with channel two.

[0016] Alternatively, unlike the above scheme, the distal end is provided with a jet pipe communicating with the channel, and an hourglass channel is provided through the jet pipe. The hourglass channel includes two mirror-shaped and interconnected conical sections, and a filter layer g is provided around the outer wall of the suction head.

[0017] The beneficial effects of this utility model are:

[0018] 1. By setting up two channels, Channel 1 and Channel 2, which are nested at their distal ends but not connected, the suction head can simultaneously connect to both a positive and negative pressure source, enabling simultaneous flushing and suction of contaminated material. The outer wall of the suction head has convection holes connecting to Channel 2. Channel 1 extends from the distal end of the suction head, and the two channels have two connection methods with the positive and negative pressure sources. Therefore, the connection method between the suction head and the positive and negative pressure sources can be switched according to the tissue environment of the material to be suctioned: when the material to be suctioned is located on the curved surface of the sidewall of the catheter lumen, the negative pressure chamber is connected to Channel 2; when the material to be suctioned is located directly in front of the suction head, the negative pressure chamber is connected to Channel 1. The suction head has a simple structure, is easy to replace, and can be flexibly combined according to actual needs, providing excellent practical results. The filter layer also helps prevent clogging of the convection holes. Simultaneous suction and flushing can effectively and significantly reduce the escape of gas or liquid from the operating area into the external environment, thereby reducing the risk of infection for medical personnel during treatment.

[0019] 2. By setting up the arc-shaped cover a, the problem of the suction and fit between the channel 1 through the plane and the surrounding tissue under negative pressure can be effectively solved, which is conducive to ensuring that the material to be aspirated is smoothly extracted through the negative pressure chamber during aspiration; by setting up the arc-shaped cover b and the spray holes on the arc-shaped cover b in different directions, it is beneficial to increase the spray area of ​​the flushing liquid when the channel 1 is connected to the negative pressure chamber.

[0020] 3. By setting needle-shaped puncture ends a or b, the operation difficulty can be reduced when rinsing or aspirating tissue that needs to be punctured and is of suitable size. This eliminates the need for the operation step of puncturing and then aspirating. Furthermore, the punctured site can be rinsed and aspirated after the punctured tissue is removed, thereby enhancing the cleaning effect without increasing the operation steps.

[0021] 4. By setting a connecting tube, it can be connected to a standard needle when puncture is required for flushing or aspiration but high puncture precision is required. Then, the effect of puncture end is achieved through the cooperation of the connecting tube and the standard needle, while also meeting the needs of different puncture precision.

[0022] 5. By setting up an hourglass channel, the flushing fluid is pressurized in the first conical section. After entering the second conical section, the flushing fluid diffuses in multiple directions under high pressure and differentiates into smaller units during the escape process, thereby atomizing the flushing fluid. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0024] Figure 1 This is a schematic diagram of the overall structure after assembly in Embodiment 1 of this utility model;

[0025] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure;

[0026] Figure 3 This is a schematic diagram of the overall structure of the suction head in Embodiment 2 of this utility model;

[0027] Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure;

[0028] Figure 5 This is a schematic diagram of the overall structure of the suction head in Embodiment 3 of this utility model;

[0029] Figure 6 for Figure 5 A schematic diagram of the cross-sectional structure;

[0030] Figure 7 This is a schematic diagram of the overall structure of the suction head in Embodiment 4 of this utility model;

[0031] Figure 8 for Figure 7 A schematic diagram of the cross-sectional structure;

[0032] Figure 9 This is a schematic diagram of the overall structure of the suction head in Embodiment 5 of this utility model;

[0033] Figure 10 for Figure 9 A schematic diagram of the cross-sectional structure;

[0034] Figure 11 This is a schematic diagram of the overall structure of the suction head in Embodiment 6 of this utility model;

[0035] Figure 12 for Figure 11 A schematic diagram of the cross-sectional structure;

[0036] Figure 13 This is a schematic diagram of the overall structure of the suction head in Embodiment 7 of this utility model;

[0037] Figure 14 for Figure 13 A schematic diagram of the cross-sectional structure;

[0038] Figure 15 This is a schematic diagram of the overall structure of the suction head in Embodiment 8 of this utility model;

[0039] Figure 16 for Figure 15 A schematic diagram of the cross-sectional structure;

[0040] Figure 17 This is a schematic diagram of the overall structure of the suction head in Embodiment 9 of this utility model;

[0041] Figure 18 for Figure 17 A schematic diagram of the cross-sectional structure;

[0042] In the diagram, 1. Catheter lumen; 11. Positive pressure chamber; 12. Negative pressure chamber; 13. Handle; 2. Suction head; 21. Channel 1; 22. Channel 2; 23. Proximal end; 24. Distal end; 25. Convection orifice; 31. Filter layer a; 32. Filter layer b; 33. Filter layer c; 34. Filter layer d; 35. Filter layer e; 36. Filter layer f; 37. Filter layer g; 41. Arc-shaped cover a; 411. Grid; 42. Arc-shaped cover b; 421. Jet orifice; 51. Puncture end a; 52. Puncture end b; 61. Connecting tube a; 62. Connecting tube b; 7. Jet tube; 71. Hourglass channel; 711. Conical section; 8. Peristaltic pump. Detailed Implementation

[0043] The technical solutions of this utility model are clearly and completely described below through specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0044] Example 1

[0045] An attractant, such as Figure 1-2As shown, it includes: a catheter lumen 1, which has two non-communicating positive pressure chambers 11 and 12, with the central axis of the positive pressure chamber 11 parallel to the central axis of the negative pressure chamber 12. The catheter lumen 1 is also connected to a handle 13 for easy gripping and operation by the user. A suction head 2, which has two non-communicating channels 21 and 22. The suction head 2 has a proximal end 23 and a distal end 24. When the catheter lumen 1 is connected to the proximal end 23 of the suction head 2: the positive pressure chamber 11 is connected to either channel 21 or channel 22, and the negative pressure chamber 12 is connected to the other channel 21 or channel 22. Channel 21 passes through channel 22 within the suction head 2 and communicates with the outside from the distal end 24. A convection hole 25 is arranged around the outer wall of the suction head 2, and the convection hole 25 communicates with channel 22. A peristaltic pump 8, at least one of which is connected to the positive pressure chamber 11 and at least one of which is connected to the negative pressure chamber 12. The suction device is kept in a sterile state and stored in a sterile environment before use. The connection between the suction head 2 and the negative pressure chamber 12 is specifically one of bolt connection, snap-fit ​​connection, or slot connection. The inner diameter of the positive pressure chamber 11 is not larger than the inner diameter of the negative pressure chamber 12. This helps to enhance the flow rate of the irrigation fluid through the positive pressure chamber 11 and also helps to prevent drainage material from clogging the negative pressure chamber 12. By incorporating a peristaltic pump 8, the insufficient negative pressure suction provided by the operating room or work area can be overcome. The strength of the negative pressure suction depends on the rotation speed of the peristaltic pump 8, thus providing an effective, stable, and controllable negative pressure. During use, the peristaltic pump 8 does not directly contact the negative pressure suction material, and also forms an effective isolation, thereby avoiding cross-infection and contamination.

[0046] A more preferred embodiment is, for example, Figure 1-2 As shown, the convection holes 25 are linearly arrayed along the axial direction of the suction head 2. A filter layer a31 is arranged around the outer wall of the suction head 2, and the filter layer a31 is fixedly connected to the suction head 2, covering the convection holes 25. The positive pressure chamber 11 is connected to channel one 21, and the negative pressure chamber 12 is connected to channel two 22. In use, the flushing fluid is sprayed from the positive pressure chamber 11 through channel one 21 out of the suction head 2, while the mixture of flushing fluid and the material to be flushed enters channel two 22 through the convection holes 25 covered by the filter layer a31 and is extracted through the negative pressure chamber 12. The filter layer a31 is specifically a sterile dressing of cotton or other flexible material to reduce the risk of damage to surrounding tissues when the filter layer comes into contact with the patient's tissue. When the loose filter layer a31 is full of drainage material, the user can easily replace it with a new suction head 2. The filter layer a31 has at least one imaging line inside, which helps prevent the filter layer from falling into the patient's body during treatment. Meanwhile, the filter layer can work with the suction head 2 and negative pressure to perform plucking and suction of tissues during use.

[0047] Example 2

[0048] Unlike Example 1, such as Figure 1-4 As shown, the convection holes 25 are also linearly arrayed along the axial direction of the suction head 2. A filter layer b32 is provided at the distal end 24 of the suction head 2, covering channel one 21. The positive pressure chamber 11 is connected to channel two 22, and the negative pressure chamber 12 is connected to channel one 21. In use, the rinsing fluid is sprayed from the positive pressure chamber 11 through the convection holes 25 on the outer wall of channel two 22 out of the suction head 2. At the same time, the mixture of rinsing fluid and the substance to be rinsed flows back into the negative pressure chamber 12 through channel one 21 covered with filter layer b32. The filter layer b32 is made of the same material as filter layer a31.

[0049] Example 3

[0050] Unlike other embodiments, in this embodiment, such as Figure 5-6 As shown, the distal end 24 is connected to an arc-shaped cover a41 covering channel 21. Multiple sets of grids 411 are arranged in a circular array on the arc-shaped cover a41, and a filter layer c33 is attached to the arc-shaped cover a41. The positive pressure chamber 11 is connected to channel 22, and the negative pressure chamber 12 is connected to channel 21. In use, the flushing fluid is ejected from the positive pressure chamber 11 through convection holes 25 on the outer wall of channel 22 and exits through the suction head 2. Simultaneously, the mixture of flushing fluid and the material to be flushed passes through the arc-shaped cover a41 covered with the filter layer c33, enters channel 21, and is extracted through the negative pressure chamber 12. The arc-shaped cover distributes the grids 411 on a curved surface, which helps reduce the risk of the grids 411 becoming blocked due to aspiration of the fluid from surrounding tissue. The filter layer c33 is made of the same material as the filter layer a31.

[0051] Example 4

[0052] Unlike other embodiments, in this embodiment, such as Figure 7-8 As shown, the distal end 24 is connected to an arc-shaped cover b42 covering channel 1 21. Multiple jet holes 421 are designed to penetrate the arc-shaped cover b42, with the central axes of any two jet holes 421 being non-parallel. A filter layer d34 is arranged around the outer wall of the suction head 2, covering the convection holes 25. The positive pressure chamber 11 is connected to channel 1 21, and the negative pressure chamber 12 is connected to channel 2 22. In use, the rinsing fluid enters channel 1 21 from the positive pressure chamber 11 and passes through the jet holes 421 on the arc-shaped cover b42, exiting the suction head 2 from multiple directions, resulting in a larger rinsing area and a more uniform rinsing effect. Simultaneously, the mixture of rinsing fluid and the substance to be rinsed enters channel 2 22 through the convection holes 25 covered by the filter layer d34 and is extracted through the negative pressure chamber 12. The filter layer d34 is made of the same material as the filter layer a31.

[0053] Example 5

[0054] Unlike other embodiments, in this embodiment, such as Figure 9-10As shown, the distal end 24 is provided with a puncture tip a51 communicating with channel one 21. The positive pressure chamber 11 is connected to channel two 22, and the negative pressure chamber 12 is connected to channel one 21. In use, the puncture tip a51 is inserted into the target tissue, connecting the inside of the tissue with the negative pressure chamber 12 through channel one 21. The material to be aspirated in the tissue is drawn out through the negative pressure chamber 12. At the same time, the flushing fluid is sprayed from the positive pressure chamber 11 through the convection hole 25 on the outer wall of channel two 22 and out of the suction head 2. When the puncture tip a51 leaves the target tissue, the material to be aspirated that leaves the target tissue is mixed with the flushing fluid and enters the negative pressure chamber 12 through the puncture tip a51, thereby cleaning the puncture site and preventing residual material to be aspirated from causing contamination.

[0055] Example 6

[0056] Unlike other embodiments, in this embodiment, such as Figure 11-12 As shown, the distal end 24 is provided with a puncture tip b52 communicating with channel one 21. A filter layer e35 is arranged around the outer wall of the suction head 2. The positive pressure chamber 11 is communicating with channel one 21, and the negative pressure chamber 12 is communicating with channel two 22. In use, the puncture tip b52 is inserted into the target tissue. The flushing fluid enters the target tissue through the positive pressure chamber 11 and channel one 21. After the flushing fluid mixes with the material to be flushed, it flows out from the target tissue. The mixed liquid enters channel two 22 through the convection holes 25 covered by the filter layer e35 and is extracted through the negative pressure chamber 12. The filter layer e35 is made of the same material as the filter layer a31.

[0057] Example 7

[0058] Unlike other embodiments, in this embodiment, such as Figure 13-14 As shown, the distal end 24 is provided with a connecting tube a61 communicating with channel one 21. The positive pressure chamber 11 is connected to channel two 22, and the negative pressure chamber 12 is connected to channel one 21. In use, the connecting tube a61 can be adapted to needles of different specifications. The needle connected to the connecting tube a61 is inserted into the target tissue, and the internal tissue is connected to the negative pressure chamber 12 through channel one 21. The material to be aspirated in the tissue is drawn out through the negative pressure chamber 12. At the same time, the irrigation fluid is sprayed from the positive pressure chamber 11 through the convection hole 25 on the outer wall of channel two 22 to the suction head 2. When the needle leaves the target tissue, the material to be aspirated that leaves the target tissue is mixed with the irrigation fluid and enters the negative pressure chamber 12 through the needle, thereby cleaning the puncture site and preventing residual material to be aspirated from causing contamination. Unlike the puncture ends a51 and b52, the connecting tube a61 can be adapted to standard needles of different specifications, thus meeting more actual treatment needs.

[0059] Example 8

[0060] Unlike other embodiments, in this embodiment, such as Figure 15-16As shown, the distal end 24 is provided with a connecting tube b62 communicating with channel one 21. A filter layer f36 is arranged around the outer wall of the suction head 2. The positive pressure chamber 11 is connected to channel one 21, and the negative pressure chamber 12 is connected to channel two 22. The connecting tube b62 can be adapted to needles of different specifications. The needle connected to the connecting tube b62 is inserted into the target tissue. The rinsing fluid enters the target tissue through the positive pressure chamber 11 and channel one 21. After the rinsing fluid mixes with the material to be rinsed, it flows out from the target tissue. The mixed liquid enters channel two 22 through the convection holes 25 covered with the filter layer f36 and is extracted through the negative pressure chamber 12. The filter layer f36 is made of the same material as the filter layer a31.

[0061] Example 9

[0062] Unlike other embodiments, in this embodiment, such as Figure 17-18 As shown, the distal end 24 is provided with a jet pipe 7 communicating with channel 1 21. An hourglass channel 71 is provided through the jet pipe 7. The hourglass channel includes two mirror-shaped and interconnected conical sections 711. A filter layer g37 is provided around the outer wall of the suction head 2. In use, the flushing liquid enters channel 1 21 under the push of the positive pressure chamber 11 and is further pressurized in the first conical section 711. After entering the second conical section 711, the increased inner diameter causes the pressurized flushing liquid to have multiple movement directions, thereby causing the flushing liquid to diffuse at high speed. At the same time, after the flushing liquid mixes with the substance to be flushed, the mixed liquid enters channel 22 through the convection holes 25 covered with filter layer g37 and is extracted through the negative pressure chamber 12. The filter layer g37 is made of the same material as filter layer a31.

Claims

1. An aspirator characterized by, include, The catheter lumen contains two non-communicating positive pressure cavities and a negative pressure cavities, with the central axis of the positive pressure cavity parallel to the central axis of the negative pressure cavity. The suction head has two internal channels, Channel 1 and Channel 2, which are not connected. The suction head has a proximal end and a distal end. When the catheter lumen is connected to the proximal end of the suction head: the positive pressure chamber is connected to one of Channel 1 or Channel 2, and the negative pressure chamber is connected to the other of Channel 1 or Channel 2. Channel 1 passes through Channel 2 inside the suction head and connects to the outside from the distal end. The outer wall of the suction head is provided with convection holes, which are connected to Channel 2.

2. A suction device according to claim 1, wherein The convection holes are also arranged in a linear array along the axial direction of the suction head, and a filter layer a is arranged around the outer wall of the suction head, which covers the convection holes; the positive pressure chamber is connected to the first channel, and the negative pressure chamber is connected to the second channel.

3. The suction device according to claim 1, characterized in that, The convection holes are also arranged in a linear array along the axial direction of the suction head, and a filter layer b is provided at the distal end of the suction head, which covers the first channel; the positive pressure chamber is connected to the second channel, and the negative pressure chamber is connected to the first channel.

4. The suction device according to claim 1, characterized in that, The distal end is connected to an arc-shaped cover a covering channel one. Multiple sets of grids are arranged in a ring array on the arc-shaped cover a. A filter layer c is attached to the arc-shaped cover a. The positive pressure chamber is connected to channel two, and the negative pressure chamber is connected to channel one.

5. The suction device according to claim 1, characterized in that, The distal end is connected to an arc-shaped cover b covering channel one. The arc-shaped cover b is provided with multiple through-holes. The central axes of any two of the jet holes are not parallel to each other. A filter layer d is arranged around the outer wall of the suction head, and the filter layer d covers the convection holes. The positive pressure chamber is connected to channel one, and the negative pressure chamber is connected to channel two.

6. The suction device according to claim 1, characterized in that, The distal end is provided with a puncture tip a communicating with channel one, the positive pressure chamber is communicating with channel two, and the negative pressure chamber is communicating with channel one.

7. The suction device according to claim 1, characterized in that, The distal end is provided with a puncture end b that communicates with channel one, and a filter layer e is provided around the outer wall of the suction head. The positive pressure chamber is communicated with channel one, and the negative pressure chamber is communicated with channel two.

8. The suction device according to claim 1, characterized in that, The distal end is provided with a connecting pipe a that communicates with channel one, the positive pressure chamber is communicated with channel two, and the negative pressure chamber is communicated with channel one.

9. An aspirator according to claim 1, characterized in that, The distal end is provided with a connecting pipe b that communicates with channel one, and a filter layer f is provided around the outer wall of the suction head. The positive pressure chamber is communicated with channel one, and the negative pressure chamber is communicated with channel two.

10. An aspirator according to claim 1, characterized in that, The distal end is provided with a jet pipe that communicates with the channel, and an hourglass channel is provided through the jet pipe. The hourglass channel includes two mirror-shaped and interconnected conical sections, and a filter layer g is provided around the outer wall of the suction head.

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