Split type flushing aspirator

Abstract

The utility model discloses a split type flushing aspirator, which belongs to the technical field of medical instruments and comprises a handle and a tube assembly detachably connected to the front end of the handle, and the tube assembly comprises a suction tube, a flushing tube sleeved on the outer side of the suction tube and an external thread seat fixed at the near end of the flushing tube. The two ends of the flushing pipe are fixedly welded to the outer wall of the suction pipe, liquid outlet holes communicated with a radial gap between the suction pipe and the flushing pipe are formed in the two ends of the flushing pipe, a T-shaped connecting column allowing the near end of the suction pipe to be inserted therein is formed at the front end of the handle, and the outer side of the T-shaped connecting column is sleeved with a loose joint nut matched with the external thread base. A first channel in sealing contact with the near end of the suction tube and a second channel communicated with an annular gap formed between the suction tube and the T-shaped connecting column are arranged in the handle. Tube assemblies of different specifications can be replaced to adapt to different wound operations, and convenience in the operation treatment process is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a split-type 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 CN213216824U discloses a laparoscopic hand-controlled irrigation dual-lumen suction device, comprising a main tube, an outer tube, and a handle. The outer tube is located on the outside of the main tube, and the handle is located at one end of the main tube. The handle has two channels formed inside, which are respectively connected to the outer tube and the main tube. A spring button one is located on one side of the upper end of the handle, and a spring button two is located on the other side of the upper end of the handle. The external connector of the channel connected to the outer tube is connected to a negative pressure suction device, and the external connector of the channel connected to the main tube is connected to a saline bag. The switching operation between suction and irrigation is completed by pressing the spring button one and the spring button two.

[0004] However, since the main tube and outer tube of the suction device are fixed to the handle by plugging them together, different sizes of main tube and outer tube cannot be adapted and replaced on the same suction device. This causes inconvenience to doctors when performing multi-incision surgery. In addition, the main tube used for irrigation in the above-mentioned suction device is built into the outer tube used for suction, which causes the space in the outer tube used for suction to be partially occupied by the main tube, thus causing blockage of the outer tube. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a split-type flushing and suction device that allows for the replacement of tube assemblies of different specifications while ensuring smooth flushing and suction operations.

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

[0007] A split-type flushing aspirator includes a handle and a tube assembly detachably connected to the front end of the handle. The tube assembly includes a suction tube, a flushing tube sleeved on the outside of the suction tube, and an external threaded seat fixed to the proximal end of the flushing tube. The two ends of the flushing tube are welded to the outer wall of the suction tube, and both ends of the flushing tube have outlet holes communicating with the radial gap between the suction tube and the flushing tube. The front end of the handle is formed with a T-shaped connecting post for insertion of the proximal end of the suction tube. A swivel nut that mates with the external threaded seat is sleeved on the outside of the T-shaped connecting post. The handle has a first channel that seals against the proximal end of the suction tube and a second channel that communicates with the annular gap formed between the suction tube and the T-shaped connecting post. A union nut is attached to the front end of the handle, which engages with the external threaded seat of the tube assembly to complete the detachable connection between the tube assembly and the handle. Tube assemblies of different specifications are formed by using suction tubes and irrigation tubes of different sizes. This allows for the use of the same irrigation and suction device without disassembling the external tubing, enabling the replacement of different specifications of tube assemblies to adapt to different surgical wounds, thus ensuring convenience during the surgical treatment process. Furthermore, the tube assembly structure with the suction tube inside and the irrigation tube outside ensures that the internal space of the suction tube is not occupied, allowing for smooth suction operation and reducing the chance of blockage.

[0008] The first channel is provided with a slot at the connection point between the inner cavity of the T-shaped connecting column and the slot. The inner wall of the slot is sealed to the outer wall of the suction tube by a sealing ring.

[0009] The inner wall of the slot is provided with an inner sealing groove for installing a sealing ring.

[0010] The union nut is equipped with a sealing gasket, and the two sides of the sealing gasket are in close contact with the end face of the external thread seat and the end face of the T-shaped connecting post, respectively.

[0011] The external threaded seat has a handle portion formed at the end away from the handle, and the outer side of the handle portion has circumferentially formed raised stripes.

[0012] The handle is provided with a pressure relief hole, which connects the first channel to the atmospheric environment.

[0013] The second channel is connected to a flushing hose, which is equipped with a switch assembly for controlling the on / off state of the flushing hose.

[0014] The handle has an outer shell fixed on one side for wrapping the flushing hose. The switch assembly includes a cylindrical seat embedded in the outer shell, a button that moves axially within the cylindrical seat, and a spring located between the bottom of the button and the cylindrical seat. The outer side of the cylindrical seat has a window. The button has a through-hole and drives the button to compress the spring axially. The window and the through-hole are aligned to form a channel through which the flushing hose passes.

[0015] This utility model has the following beneficial effects:

[0016] This invention achieves a detachable connection between the tube assembly and the handle by setting a union nut and a tube assembly with an external thread seat. By using suction tubes and irrigation tubes of different sizes to form tube assemblies of different specifications, it is possible to change tube assemblies of different specifications to adapt to different surgical wounds without disassembling the external tubing when using the same irrigation and suction device, thus ensuring convenience during the surgical treatment process. At the same time, the tube assembly is designed with the suction tube inside and the irrigation tube outside, so that the internal space of the suction tube is not occupied, the suction operation is smooth, and the chance of blockage is reduced. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the handle structure in this utility model;

[0020] Figure 3 This is a partial cross-sectional schematic diagram of the present invention along the longitudinal axis of the suction channel.

[0021] Figure 4 This is a partial cross-sectional view of the present invention along the longitudinal axis of the flushing hose.

[0022] Figure 5 This is a partial cross-sectional schematic diagram of the central tube assembly of this utility model;

[0023] Figure 6 This is a cross-sectional schematic diagram of the switch assembly in this utility model;

[0024] Figure 7 for Figure 3 A magnified view of part A in the image.

[0025] 1. Handle; 101. T-shaped connecting post; 102. Housing; 103. First channel; 104. Second channel; 105. Pressure relief hole; 106. Slot; 107. Inner sealing groove; 2. Suction tube; 201. Annular gap; 3. Flushing tube; 301. Liquid outlet; 302. Radial gap; 4. External thread seat; 401. Handle; 402. Glue potting groove; 5. Union nut; 6. Flushing hose; 7. Switch assembly; 701. Cylindrical seat; 702. Button; 703. Spring; 704. Window; 705. Through part; 8. Tower joint; 9. Sealing gasket; 10. Sealing ring. Detailed Implementation

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] like Figure 1 , Figure 3 and Figure 7As shown, this utility model provides a split-type flushing aspirator, including a handle 1 and a tube assembly detachably connected to the front end of the handle 1. The tube assembly includes a suction tube 2, a flushing tube 3 sleeved on the outside of the suction tube 2, and an external threaded seat 4 fixed to the proximal end of the flushing tube 3. The two ends of the flushing tube 3 are welded and fixed to the outer wall of the suction tube 2, and the two ends of the flushing tube 3 have liquid outlet holes 301 that communicate with the radial gap 302 between the suction tube 2 and the flushing tube 3. The front end of the handle 1 is formed with a T-shaped connecting post 101 for the proximal end of the suction tube 2 to be inserted. A swivel nut 5 that mates with the external threaded seat 4 is sleeved on the outside of the T-shaped connecting post 101. The handle 1 has a first channel 103 that seals against the proximal end of the suction tube 2 and a second channel 104 that communicates with the annular gap 201 formed between the suction tube 2 and the T-shaped connecting post 101. The proximal end of the suction tube 2 of the tube assembly is inserted into the T-shaped connecting post 101 and sealed to the first channel 103. The first channel 103 and the inner cavity of the suction tube 2 together form a suction channel for suctioning surgical exudate. The union nut 5 is sealed to the external threaded seat 4. The second channel 104 is connected through the annular gap 201, the outlet hole 301 and the radial gap 302 to form a rinsing channel for rinsing the wound. Through the detachable connection between the tube assembly and the handle 1, the same rinsing and suction device is equipped with tube assemblies of different specifications composed of rinsing tubes 3 and suction tubes 2 of different sizes. This allows for the replacement of different specifications of tube assemblies to adapt to different wound surgeries without disassembling the external tubing when using the same rinsing and suction device, thus ensuring convenience during the surgical treatment process. Furthermore, because the tube assembly in this solution has a structure with the suction tube 2 inside and the rinsing tube 3 outside, the internal space of the suction tube 2 is not occupied, the suction operation is smooth, and the probability of blockage is effectively reduced.

[0031] like Figure 1 and Figure 5 As shown, the welding points at both ends of the flushing tube 3 and the suction tube 2 are arc-shaped, and the outlet hole 301 and the distal end of the suction tube 2 have chamfered arc surfaces to prevent them from cutting the body's weak tissues during surgery.

[0032] like Figure 5 As shown, the external thread seat 4 is sleeved on the outside of the flushing tube 3 and fixed by adhesive. In order to ensure the adhesive effect, the external thread seat 4 has a glue filling groove 402 formed on the side facing the far end of the suction tube 2. The glue filling groove 402 and the outer wall of the flushing tube 3 form an annular receiving cavity for filling glue, so as to glue the flushing tube 3 and the external thread seat 4 together.

[0033] To ensure a proper seal between the proximal end of the suction tube 2 and the first channel 103, such as Figure 2As shown, a slot portion 106 is provided at the connection point between the first channel 103 and the inner cavity of the T-shaped connecting post 101. The inner wall of the slot portion 106 is in sealed contact with the outer wall of the suction tube 2 via a sealing ring 10. More preferably, an inner sealing groove 107 for installing the sealing ring 10 is provided on the inner wall of the slot portion 106. The depth of the inner sealing groove 107 is less than the thickness of the sealing ring 10, so as to make an interference seal between the outer wall of the suction tube 2 and the inner wall of the insertion portion.

[0034] Similarly, in order to ensure the sealing effect between the union nut 5 and the external thread seat 4, a sealing gasket 9 is provided inside the union nut 5. The two sides of the sealing gasket 9 are in close contact with the end face of the external thread seat 4 and the end face of the T-shaped connecting post 101, respectively.

[0035] To facilitate the assembly and disassembly of pipe assemblies, such as Figure 5 As shown, the external thread seat 4 has a handle portion 401 formed at the end away from the handle 1. The handle portion 401 has convex stripes formed on the outer side in the circumferential direction. More preferably, the outer side of the union nut 5 also has convex stripes formed in the circumferential direction. The convex stripes increase the friction force of the fingers when tightening or unscrewing the tube assembly.

[0036] like Figure 1 and Figure 3 As shown, the handle 1 is provided with a pressure release hole 105, which connects the first channel 103 to the atmospheric environment. The pressure release hole 105 is opened and closed by moving the thumb away from or towards it. When the pressure release hole 105 is closed, the pressure from the external negative pressure source is used to suction the surgical exudate through the suction channel. When the pressure release hole 105 is opened, the external negative pressure source is connected to the atmosphere through the pressure release hole 105, thus terminating the suction operation. The operation is convenient and highly flexible. Further preferably, the outer side of the pressure release hole 105 is formed with an inner arc-shaped concave surface structure that fits the surface of the thumb, which conforms to the ergonomic design.

[0037] like Figure 3 and Figure 4 As shown, the second channel 104 is externally connected to a rinsing hose 6. The rinsing hose 6 is equipped with a switch assembly 7 for controlling the on / off state of the rinsing hose 6. Specifically, an outer shell 102 for enclosing the rinsing hose 6 is fixed to one side of the handle 1. This outer shell 102 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. An internal chamber for enclosing the rinsing hose 6 is located between the upper and lower shells. Figure 6As shown, the switch assembly 7 includes a cylindrical base 701, a button 702 that moves axially within the cylindrical base 701, and a spring 703 located between the bottom of the button 702 and the cylindrical base 701. The cylindrical base 701 is embedded and fixed within the outer casing 102. Specifically, in this embodiment, the outer side of the opening of the cylindrical base 701 passes through and is bonded to the upper casing, and the bottom of the cylindrical base 701 abuts against the inner side of the lower casing. The outer side of the cylindrical base 701 has a window 704 located inside the upper casing. The button 702 has a through portion 705, and the button is driven axially to compress the spring 703. The window 704 and the through portion 705 are aligned to form a channel for the flushing hose 6 to pass through. By providing the switch assembly 7 with the mechanical spring 703 mechanism on the handle 1, the flushing hose 6 can be instantly switched on and off, making the operation quick and reliable.

[0038] When implementing the above technical solution, a set of irrigation and aspiration devices is equipped with multiple tube assemblies. The appropriate tube assembly is selected based on the surgical area of ​​the wound. The proximal end of the irrigation tube 3 of the tube assembly is inserted into the slot 106 of the handle 1. The external threaded seat 4 is threadedly connected to the union nut 5. The handle 1 is connected to the negative pressure source via the tower-shaped connector 8 at the end of the first channel 103. The irrigation hose 6 is connected to the saline bag via the connector. During irrigation, pressing the button connects the irrigation hose 6, and the saline solution flows sequentially through the second channel 104, the annular gap 201, and the irrigation tube 3. The proximal outlet 301, radial gap 302, and distal outlet 301 of the irrigation tube 3 reach the wound. During suction, the negative pressure source is turned on, and the thumb is brought close to and blocked by the pressure release hole 105. A connected negative pressure is formed in the first channel 103 and the suction tube 2 to suction and remove the exudate and irrigation water in the wound. The entire suction process is smooth and unobstructed because the suction channel has no space occupied. If it is necessary to replace the tube assembly with other specifications (different diameters), the tube assembly installed on the handle 1 is unscrewed and removed, and the new tube assembly is installed according to the previous operation. The replacement operation is convenient.

[0039] 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. A split-type flushing aspirator, characterized in that, The device includes a handle and a tube assembly detachably connected to the front end of the handle. The tube assembly includes a suction tube, a flushing tube sleeved on the outside of the suction tube, and an external threaded seat fixed to the proximal end of the flushing tube. The two ends of the flushing tube are welded to the outer wall of the suction tube, and both ends of the flushing tube have outlet holes communicating with the radial gap between the suction tube and the flushing tube. The front end of the handle is formed with a T-shaped connecting post for the proximal end of the suction tube to be inserted. A union nut that mates with the external threaded seat is sleeved on the outside of the T-shaped connecting post. The handle has a first channel that is in sealing contact with the proximal end of the suction tube and a second channel that communicates with the annular gap formed between the suction tube and the T-shaped connecting post.

2. The split-type flushing suction device according to claim 1, characterized in that, The first channel is provided with a slot at the connection point between the inner cavity of the T-shaped connecting column and the slot. The inner wall of the slot is sealed to the outer wall of the suction tube by a sealing ring.

3. A split-type flushing suction device according to claim 2, characterized in that, The inner wall of the slot is provided with an inner sealing groove for installing a sealing ring.

4. A split-type flushing suction device according to claim 1, characterized in that, The union nut is equipped with a sealing gasket, and the two sides of the sealing gasket are in close contact with the end face of the external thread seat and the end face of the T-shaped connecting post, respectively.

5. A split-type flushing suction device according to any one of claims 1-4, characterized in that, The external threaded seat has a handle portion formed at the end away from the handle, and the outer side of the handle portion has circumferentially formed raised stripes.

6. A split-type flushing suction device according to any one of claims 1-4, characterized in that, The handle is provided with a pressure relief hole, which connects the first channel to the atmospheric environment.

7. A split-type flushing suction device according to any one of claims 1-4, characterized in that, The second channel is connected to a flushing hose, which is equipped with a switch assembly for controlling the on / off state of the flushing hose.

8. A split-type flushing suction device according to claim 7, characterized in that, The handle has an outer shell fixed on one side for wrapping the flushing hose. The switch assembly includes a cylindrical seat embedded in the outer shell, a button that moves axially within the cylindrical seat, and a spring located between the bottom of the button and the cylindrical seat. The outer side of the cylindrical seat has a window. The button has a through-hole and drives the button to compress the spring axially. The window and the through-hole are aligned to form a channel through which the flushing hose passes.

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