Adjustable flushing aspirator

Abstract

The utility model discloses an adjustable flushing aspirator, which belongs to the technical field of medical instruments and comprises a handle and a tube component, an anterior chamber with an opening at the front end, a first channel and a second channel are arranged in the handle, and the first channel and the second channel are communicated with an inner cavity of the anterior chamber and isolated from each other. The tube assembly comprises a suction tube arranged in an inner cavity of the anterior chamber and connected with the first channel and a flushing tube connected to the outer side of the suction tube in a sleeving mode and connected with the anterior chamber, the second channel is communicated with a radial gap between the suction tube and the flushing tube through an annular gap formed between the suction tube and the inner cavity of the anterior chamber, and the second channel is externally connected with a flushing connecting tube. The flushing connecting pipe is provided with a flow adjusting assembly used for adjusting the communication section area of the flushing connecting pipe and the second channel, and the surface of the handle is provided with a pressure adjusting hole communicated with the first channel. According to the utility model, the suction channel and the flushing channel can be separated from each other, and the flushing flow and the negative pressure can be adjusted as required.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an adjustable irrigation suction device. Background Technology

[0002] During the surgery, sterile saline solution is used to rinse the surgical wound area, and bleeding, exudate, and rinsing water are promptly aspirated and removed to ensure a clear surgical field and reduce the chance of infection.

[0003] To integrate irrigation and suction functions into a single device for easier surgical procedures and improved efficiency, patent CN115515659A discloses a longitudinally arranged suction and irrigation device, comprising a housing, a probe, and a suction supply unit. The housing includes an anterior chamber and a posterior chamber, a first catheter, a second catheter, and a third catheter. The anterior and posterior chambers are separated from each other and connected by connecting catheters. The first catheter is connected to the front of the anterior chamber and extends forward, the second catheter is connected to the rear of the anterior chamber and extends backward, and the third catheter is connected to the rear of the posterior chamber and extends backward. The probe engages with the tip of the first catheter and is inserted into the patient's abdominal cavity. The suction supply unit includes a supply valve that reciprocates along the axial direction of the anterior chamber within the anterior chamber and a suction valve that reciprocates along the axial direction of the posterior chamber within the posterior chamber. Switching between the supply valve and the suction valve enables the switching operation of irrigation and suction.

[0004] However, in the above-mentioned suction and irrigation device, the irrigation and suction operations share the first catheter and the probe at its front end. During the process of switching between suction and irrigation, the suction fluid remaining on the inner wall of the probe will be flushed into the surgical wound again by saline, which poses a risk of secondary infection to the patient. Furthermore, the supply valve and suction valve can only achieve single on / off control, which cannot meet the needs of changing the irrigation flow rate or the suction negative pressure for different surgical wounds. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an adjustable flushing suction device that ensures the suction channel and flushing channel are separated from each other, and allows for adjustment of the flushing flow rate and negative pressure as needed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An adjustable flushing aspirator includes a handle and a tube assembly. The handle has a pre-chamber with a front opening, and a first channel and a second channel that are connected to and isolated from the inner cavity of the pre-chamber. The tube assembly includes a suction tube inserted into the inner cavity of the pre-chamber and connected to the first channel, and a flushing tube sleeved on the outside of the suction tube and connected to the pre-chamber. The second channel is connected to the radial gap between the suction tube and the inner cavity of the pre-chamber via an annular gap. A flushing connecting tube is connected to the outside of the second channel. A flow regulating component for adjusting the cross-sectional area of ​​the flushing connecting tube and the second channel is installed on the flushing connecting tube. A pressure regulating hole connected to the first channel is opened on the surface of the handle. A tubular assembly consisting of a suction tube and an irrigation tube is installed at the front end of the handle. This allows the first channel inside the handle to communicate with the inner lumen of the suction tube to form a suction channel, while the second channel inside the handle is connected by an annular gap and a radial gap to form an irrigation channel. This ensures that the two channels are independent and separate, preventing the suctioned fluid from being flushed back to the surgical wound. A pressure adjustment hole is provided on the first channel, allowing the negative pressure inside the first channel to be adjusted according to the area covered by the finger. A flow adjustment component is provided on the irrigation connection tube connected to the second channel, allowing the flow rate of the irrigation fluid entering the second channel to be adjusted, thereby meeting the needs of changing the irrigation flow rate or suction negative pressure during the operation.

[0008] The pressure regulating orifice is teardrop-shaped. The negative pressure within the first channel is adjusted by closing the orifice at different positions with a finger. The teardrop shape facilitates manufacturing and allows for stepless adjustment of the negative pressure using only finger operation.

[0009] The flushing connection pipe is a flexible hose, and an outer shell for wrapping the flexible hose is fixed on one side of the handle. The flow regulating component is a flow regulator embedded in the outer shell. The flexible hose is located inside the flow regulator, and the cross-sectional area of ​​the flexible hose gradually decreases under the drive of the roller knob inside the flow regulator.

[0010] The flushing connection tube includes an elbow fixed to the outside of the handle and connected to the second channel, and a connector for connecting the saline tubing. The flow regulating component is a straight-through valve for connecting the elbow and the connector.

[0011] The straight-through valve includes a valve seat, a valve core rotatably connected within the valve seat, and a valve stem that drives the valve core to rotate. The valve stem has a reference marking portion on its outer side, and the valve seat has a flow rate increase / decrease display portion corresponding to the reference marking portion to display the opening degree of the straight-through valve.

[0012] The second channel extends to the outside of the handle to form an inner Luer connector. The elbow is connected to the inner Luer connector via an outer Luer connector. A snap-fit ​​seat for fixing the elbow is fixed on the handle.

[0013] The first channel is provided with a slot at the point where it communicates with the inner cavity of the anterior chamber, and the suction tube is fixed in place by cooperating with the slot.

[0014] A nut seat is fixed to the outer side of the flushing tube near the handle. The outer side of the anterior chamber has an external thread that is threaded to the nut seat. A sealing gasket is provided inside the nut seat to be in close contact with the end face of the anterior chamber.

[0015] The slot portion has a first cavity that matches the outer diameter of the suction tube and a second cavity with a larger diameter than the first cavity, which connects the first cavity and the inner cavity of the anterior chamber. An annular glue-filling cavity is formed between the second cavity and the suction tube. The formation of the annular glue-filling cavity facilitates the glue-filling operation during the assembly of the suction tube and ensures the adhesion and stability of the suction tube.

[0016] The suction tube and the rinsing tube have an inwardly rolled edge structure at the end away from the handle.

[0017] This utility model has the following beneficial effects:

[0018] This invention features a tube assembly consisting of a suction tube and an irrigation tube connected together at the front end of the handle. This assembly connects the first channel inside the handle to the inner cavity of the suction tube, forming a suction channel. The second channel inside the handle is connected via an annular gap and a radial gap, forming an irrigation channel. This ensures the independent separation of the two channels and prevents the suctioned fluid from being flushed back into the surgical wound. A pressure adjustment hole is provided on the first channel, allowing adjustment of the negative pressure within the first channel based on the area covered by a finger. A flow adjustment component is provided on the irrigation connection tube connected to the second channel, allowing adjustment of the flow rate of the irrigation fluid entering the second channel. This allows for changes in irrigation flow rate or suction negative pressure during surgery. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of Example 1;

[0021] Figure 2 This is a schematic diagram of the structure of Example 2;

[0022] Figure 3 This is a cross-sectional view of the connecting seat and the anterior chamber after they are connected in Example 1;

[0023] Figure 4 This is a cross-sectional schematic diagram of the outlet of the pipe assembly.

[0024] Figure 5 This is a partial schematic diagram of a cross-section along the longitudinal axis of the hose in Example 1.

[0025] Figure 6 This is a partial structural diagram of the handle's forecourt in Example 2;

[0026] Figure 7 This is a schematic diagram of the adjustment of the straight-through valve in Example 2. Figure 7 (a) is a schematic diagram of the straight-through valve in the fully open state. Figure 7 (b) is a schematic diagram of the straight-through valve in the half-open state;

[0027] Figure 8 This is a schematic diagram showing the connection between the straight valve, elbow, and connector in Example 2.

[0028] 1. Handle; 101. First channel; 102. Second channel; 103. Front chamber; 104. Pressure adjustment port; 105. Slot; 1051. First cavity; 1052. Second cavity; 106. Snap-fit ​​seat; 107. Outer shell; 2. Suction tube; 201. Radial clearance; 202. Annular clearance; 203. Inner rolled edge structure; 3. Flushing tube; 301. Nut seat; 302. Glue filling tank; 4. Hose; 5. Flow regulator; 501. Roller knob; 502. Roller conveyor; 503. Adjusting slope; 6. Elbow; 601. Luer external connector; 7. Connector; 8. Straight-through valve; 801. Valve seat; 802. Valve core; 803. Valve stem; 804. Connecting port; 805. Reference mark; 806. Flow increase / decrease display; 9. Sealing gasket; 10. Tower-type connector. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] like Figures 1-3 As shown, this utility model provides an adjustable flushing suction device, including a handle 1 and a tube assembly. The handle 1 has a front chamber 103 with a front opening, and a first channel 101 and a second channel 102 that are connected to and isolated from the inner cavity of the front chamber 103. The tube assembly includes a suction tube 2 inserted into the inner cavity of the front chamber 103 and connected to the first channel 101, and a flushing tube 3 sleeved on the outside of the suction tube 2 and connected to the front chamber 103. The second channel 102 is connected to the radial gap 201 between the suction tube 2 and the flushing tube 3 through an annular gap 202 formed between the suction tube 2 and the inner cavity of the front chamber 103, forming a flushing channel. The first channel 101 in the handle 1... The first channel 101 is connected to the inner cavity of the suction tube 2 to form a suction channel. The two channels are independent and separate from each other, thus avoiding the problem of the suctioned liquid being flushed back to the surgical wound. The second channel 102 is connected to a flushing connection tube. The flushing connection tube is equipped with a flow regulating component for adjusting the cross-sectional area of ​​the flushing connection tube and the second channel 102 to regulate the flow rate of the flushing fluid into the second channel 102. The handle 1 has a pressure regulating hole 104 connected to the first channel 101. The negative pressure in the first channel 101 is adjusted according to the area of ​​the pressure regulating hole 104 covered by the finger, thereby meeting the needs of adjusting the flushing flow rate or suction negative pressure during the operation.

[0034] like Figure 4 As shown, in a further preferred embodiment, the suction tube 2 and the rinsing tube 3 have an inwardly rolled edge structure 203 at the ends away from the handle 1 to avoid forming a sharp surface at the outlet end of the tube assembly, effectively preventing the rinsing suction device from cutting the human body's weak tissues during surgery.

[0035] like Figure 3As shown, a slot 105 is provided at the connection point between the first channel 101 and the inner cavity of the anterior chamber 103. The suction tube 2 is fixedly fitted into the slot 105. Preferably, the suction tube 2 is inserted into the slot 105 and fixed with adhesive. Figure 6 The slot portion 105 has a first cavity 1051 that matches the outer diameter of the suction tube 2 and a second cavity 1052 that connects the first cavity 1051 and the inner cavity of the anterior chamber portion 103 and has a diameter larger than the first cavity 1051. After the suction tube 2 is inserted into the second cavity 1052 and the first cavity in sequence, an annular glue-filling cavity is formed between the second cavity 1052 and the suction tube 2. The assembly personnel can perform glue-filling operation into the annular glue-filling cavity to ensure the firmness and stability of the suction tube 2 after bonding. In order to facilitate the glue-filling operation, the end of the second cavity 1052 near the anterior chamber portion 103 has an outwardly open flared mouth.

[0036] like Figure 3 As shown, a nut seat 301 is fixed to the outer side of the flushing tube 3 near the handle 1. The outer side of the front chamber 103 has an external thread that is threaded to the nut seat 301. A sealing gasket 9 is provided inside the nut seat 301 to be in close contact with the end face of the front chamber 103. Specifically, in this application, the flushing tube 3 passes through the nut seat 301 and is fixed to the nut seat 301 by adhesive. Preferably, the end of the nut seat 301 away from the handle 1 has a glue-filling groove 302, and the groove opening of the glue-filling groove 302 has the same flared structure as the slot 105, so that the nut seat 301 is stably glued to the outside of the flushing tube 3.

[0037] like Figure 1 and Figure 2 As shown, the pressure regulating hole 104 is teardrop-shaped. A finger can close different positions of the teardrop-shaped pressure regulating hole 104 to adjust the negative pressure within the first channel 101. Preferably, the larger end of the teardrop-shaped pressure regulating hole 104 faces the far end of the handle 1 (the end furthest from the tube assembly), and the smaller end faces the near end of the handle 1 (the end closest to the tube assembly). Compared to existing valve designs, the teardrop-shaped pressure regulating hole 104 is easier to manufacture. When a finger, such as a thumb, presses all of the pressure regulating hole 104, the negative pressure within the first channel 101 is at its maximum. When the finger does not press the pressure regulating hole 104, the negative pressure is at its minimum. As the area of ​​the pressure regulating hole 104 pressed by the finger decreases, i.e., as the finger moves from the smaller end to the larger end of the teardrop-shaped pressure regulating hole 104, the negative pressure gradually changes from large to small, thus achieving stepless adjustment of the negative pressure and thereby changing the speed at which wound debris is suctioned.

[0038] like Figure 1 and Figure 5As shown, in Embodiment 1, the flushing connection tube is a flexible hose 4, and an outer shell 107 for wrapping the flexible hose 4 is fixed to one side of the handle 1. Preferably, the outer shell 107 can be composed of an upper shell integrally formed on the outside of the handle 1 and a lower shell detachably connected to the upper shell by screws. There is an internal chamber for wrapping the flexible hose 4 between the upper shell and the lower shell. The flow regulating component is a flow regulator 5 embedded and fixed in the outer shell 107. Specifically, in this embodiment, the main body of the flow regulator 5 penetrates and is bonded to the upper shell, the bottom of the main body of the flow regulator 5 abuts against the inner side of the lower shell, and the roller knob 501 of the flow regulator 5 extends out of the upper shell for operation by medical personnel. The flexible hose 4 is located inside the flow regulator 5, and the cross-sectional area of ​​the flexible hose 4 gradually decreases under the drive of the roller knob 501 inside the flow regulator 5. Specifically, as shown in the figure... Figure 5 As shown, the main body of the flow regulator 5 has roller tracks 502 on both sides that cooperate with the roller knob to roll. The bottom of the main body of the flow regulator 5 has an inclined adjustment slope 503 along the moving direction of the roller knob 501. When the roller knob 501 is located at the far end of the roller track 502 (the end away from the tube assembly), the roller knob 501 does not squeeze the hose 4, and the flushing fluid flow rate from the hose 4 into the second channel 102 is the maximum. When the roller knob 501 is located at the near end of the roller track 502 (the end close to the tube assembly), the roller knob 501 fully squeezes the hose 4, and no flushing fluid enters the second channel 102 from the hose 4. As the roller knob 501 moves, the distance between the surface of the roller knob 501 and the adjustment slope 503 decreases. Under the squeezing of the roller knob 501, the cross-sectional area of ​​the hose 4 located in the flow regulator 5 decreases, and the flushing fluid flow rate from the hose 4 into the second channel 102 gradually changes from large to small, thereby realizing stepless adjustment of the flushing flow rate.

[0039] like Figure 2 and Figure 7 As shown, in Embodiment 2, the flushing connection tube includes an elbow 6 fixed to the outside of the handle 1 and connected to the second channel 102, and a connector 7 for connecting the saline tubing. The flow regulating component is a straight-through valve 8 for connecting the elbow 6 and the connector 7. Specifically, the second channel 102 extends to the outside of the handle 1 to form a Luer inner connector. The elbow 6 is connected to the Luer inner connector via a Luer outer connector 601. A snap-fit ​​seat 106 for fixing the elbow 6 is fixed on the handle 1. Similarly, the elbow 6 and the straight-through valve 8, and the straight-through valve 8 and the connector 7 are connected by a Luer connection to ensure the reliability and convenience of the connection between the handle 1, the elbow 6, the straight-through valve 8, and the connector 7.

[0040] like Figure 7 and Figure 8As shown, the straight-through valve 8 includes a valve seat 801, a valve core 802 rotatably connected within the valve seat 801, and a valve stem 803 that drives the valve core 802 to rotate. The valve stem 803 has a reference marking portion 805 on its outer side. The valve seat 801 has a flow rate increase / decrease display portion 806 corresponding to the reference marking portion 805 to display the opening degree of the straight-through valve 8. Specifically, the flow rate increase / decrease display portion 806 is located in an arc-shaped groove on the side wall of the valve seat 801. When the reference marking portion 805 of the valve stem 803 is aligned with the middle position of the arc-shaped groove, as shown... Figure 7 As shown in (a), the connecting port 804 of the valve core 802 is fully aligned with the outlets at both ends of the valve seat 801. At this time, the straight-through valve 8 is in a fully open state, and the flow rate entering the second channel 102 is the maximum. As the valve stem 803 rotates, the reference marking part 805 of the valve stem 803 points to both sides of the arc-shaped groove, as shown in (a). Figure 7 As shown in (b), the connecting port 804 of the valve core 802 is aligned with the outlet portions at both ends of the valve seat 801. At this time, the straight-through valve 8 is in a semi-open state, and the flow rate entering the second channel 102 gradually changes from large to small. If the valve stem 803 is rotated further, the straight-through valve 8 closes, and no flow rate enters the second channel 102. Thus, stepless adjustment of the flow rate is achieved.

[0041] When implementing this technical solution, taking Example 1 as an example, the distal end of the hose 4 of the irrigation suction device is connected to the saline bag tubing via a connector, and the tower-shaped connector 10 at the distal end of the first channel 101 is connected to the negative pressure source tubing. During the irrigation operation, medical staff move the roller knob 501 of the flow regulator 5 away from the tubing assembly as needed. That is, the flow rate of the irrigation fluid increases as the roller knob 501 moves. The irrigation fluid passes through the hose 4, the second channel 102, the annular gap 202, and the radial gap 201 in sequence, and is used to rinse the wound from the outlet end of the irrigation tube 3. After the irrigation is completed, the medical staff moves the roller knob 501 to the proximal end of the roller channel 502, turns on the negative pressure source, and performs the suction operation. According to the required negative pressure, the finger slides back and forth on the pressure adjustment hole 104. The exudate and irrigation fluid at the wound enter the first channel 101 through the suction tube 2 and are then suctioned into the container of the negative pressure source. During the entire use process, the flow rate and negative pressure can be infinitely adjusted as needed, and the irrigation channel and the suction channel are independent of each other, with no risk of infection.

[0042] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An adjustable flushing suction device, characterized in that, The device includes a handle and a tube assembly. The handle has a front-end open anterior chamber and a first channel and a second channel that are connected to and isolated from the inner cavity of the anterior chamber. The tube assembly includes a suction tube inserted into the inner cavity of the anterior chamber and connected to the first channel, and a flushing tube sleeved on the outside of the suction tube and connected to the anterior chamber. The second channel is connected to the radial gap between the suction tube and the inner cavity of the anterior chamber through an annular gap. A flushing connecting tube is connected to the outside of the second channel. A flow regulating component for adjusting the cross-sectional area of ​​the flushing connecting tube and the second channel is installed on the flushing connecting tube. A pressure regulating hole connected to the first channel is opened on the surface of the handle.

2. The adjustable flushing suction device according to claim 1, characterized in that, The pressure regulating hole is teardrop-shaped. By closing the teardrop-shaped pressure regulating hole at different positions with a finger, the negative pressure in the first channel can be adjusted.

3. An adjustable flushing aspirator according to claim 1 or 2, characterized in that, The flushing connection pipe is a flexible hose, and an outer shell for wrapping the flexible hose is fixed on one side of the handle. The flow regulating component is a flow regulator embedded in the outer shell. The flexible hose is located inside the flow regulator, and the cross-sectional area of ​​the flexible hose gradually decreases under the drive of the roller knob inside the flow regulator.

4. An adjustable flushing aspirator according to claim 1 or 2, characterized in that, The flushing connection tube includes an elbow fixed to the outside of the handle and connected to the second channel, and a connector for connecting the saline tubing. The flow regulating component is a straight-through valve for connecting the elbow and the connector.

5. An adjustable flushing suction device according to claim 4, characterized in that, The straight-through valve includes a valve seat, a valve core rotatably connected within the valve seat, and a valve stem that drives the valve core to rotate. The valve stem has a reference marking portion on its outer side, and the valve seat has a flow rate increase / decrease display portion corresponding to the reference marking portion to display the opening degree of the straight-through valve.

6. An adjustable flushing suction device according to claim 4, characterized in that, The second channel extends to the outside of the handle to form an inner Luer connector. The elbow is connected to the inner Luer connector via an outer Luer connector. A snap-fit ​​seat for fixing the elbow is fixed on the handle.

7. An adjustable flushing aspirator according to claim 1, characterized in that, The first channel is provided with a slot at the point where it communicates with the inner cavity of the anterior chamber, and the suction tube is fixed in place by cooperating with the slot.

8. An adjustable flushing aspirator according to claim 1 or 7, characterized in that, A nut seat is fixed to the outer side of the flushing tube near the handle. The outer side of the anterior chamber has an external thread that is threaded to the nut seat. A sealing gasket is provided inside the nut seat to be in close contact with the end face of the anterior chamber.

9. An adjustable flushing suction device according to claim 7, characterized in that, The slot portion has a first cavity that matches the outer diameter of the suction tube and a second cavity that connects the first cavity and the inner cavity of the anterior chamber portion and has a diameter larger than the first cavity. The second cavity and the suction tube form an annular glue-filling cavity.

10. An adjustable flushing suction device according to claim 1, characterized in that, The suction tube and the rinsing tube have an inwardly rolled edge structure at the end away from the handle.

Images