Dual-purpose suction head of medical aspirator

Abstract

The utility model discloses a dual-purpose suction head of a medical aspirator, and relates to the technical field of medical aspirates.The dual-purpose suction head comprises an air suction port assembly, an inner tube and an outer tube; the inner tube is communicated with an aspiration connecting tube of an aspirator and is connected end to end; the outer pipe and the inner pipe are coaxially arranged in a sleeved mode, and a gap between the head of the outer pipe and the head of the inner pipe is in a blocked state. A containing space capable of containing the air suction port assembly to move in the axial direction of the inner pipe is formed between the inner pipe and the outer pipe. When the air suction port assembly is moved out of the containing space, the size of the cross section of the air suction port assembly is gradually increased. When the air suction port assembly moves into the containing space, the size of the cross section of the air suction port assembly is gradually reduced till the air suction port assembly is located in the containing space. When the air suction port assembly moves out of the containing space, the cross section area of the air suction port assembly is automatically enlarged, and therefore the smoke suction area is enlarged. When the air suction port assembly is located in the containing space, use of the sucked liquid can be effectively guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical aspirators, and in particular relates to a dual-purpose aspirator head of the medical aspirator. Background Art

[0002] During surgery, medical suction devices are often used. The suction devices are used to remove smoke generated by electric knife cutting of soft tissues as well as water and blood accumulation that affect the field of vision during surgery. The suction device structure includes a negative pressure power device, a waste liquid collection device, a suction connecting tube and a suction head. The suction connecting tube can send blood and water to the waste liquid collection device through the suction head.

[0003] The existing traditional suction head is a cylindrical tube, which has the ability to efficiently and accurately absorb liquids; however, in order to cooperate with the negative pressure power device to quickly absorb the liquid, the diameter of the suction head is relatively small; when absorbing smoke, the suction head with a smaller diameter can quickly absorb smoke, but it cannot absorb smoke over a large area. When a large amount of smoke is generated, the suction head with a smaller diameter cannot meet the smoking needs, resulting in a large-scale spread of smoke, endangering the health of medical staff. Utility Model Content

[0004] The utility model aims at the deficiencies in the prior art and provides a dual-purpose suction head of a medical suction device, which can effectively suction liquid and gas during surgery.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A dual-purpose suction head for a medical suction device, comprising an air intake port assembly, an inner tube and an outer tube; the inner tube is used for conducting with the suction connecting tube of the suction device and being connected end to end; the outer tube and the inner tube are coaxially sleeved, and the gap between the outer tube and the head of the inner tube is in a blocked state; there is an accommodating space between the inner tube and the outer tube that can accommodate the air intake port assembly to move axially along the inner tube; when the air intake port assembly moves out of the accommodating space, the cross-sectional size of the air intake port assembly gradually increases; when the air intake port assembly moves into the accommodating space, the cross-sectional size of the air intake port assembly gradually decreases until it is located in the accommodating space.

[0007] Preferably, a connecting ring is also slidably sleeved on the circumference of the inner tube; the air inlet assembly includes a spring sheet and a transparent film; there are multiple spring sheets, which are distributed in a ring shape on the circumference of the connecting ring; the spring sheet is installed on the connecting ring and gradually expands outward from the outer wall of the connecting ring; the transparent film covers multiple spring sheets and is connected to the connecting ring at the top; when the spring sheet is located in the accommodating space, the spring sheet is pressed against the inner wall of the outer tube.

[0008] Preferably, the spring sheet includes a straight portion and an oblique portion connected end to end; the end of the straight portion facing away from the oblique portion is installed on a connecting ring; when the air intake assembly extends out of the accommodating space and is in an air intake state, the oblique portion completely extends out of the accommodating space.

[0009] Preferably, an arc-shaped rubber strip is provided at the end of the spring sheet; when the spring sheet is completely located in the accommodating space, a plurality of rubber strips abut against each other to form a ring shape and are located between the inner tube and the outer tube.

[0010] Preferably, the outer tube is provided with a slide groove extending along its axial direction; the inner tube is provided with a pushing member; the pushing member passes through the slide groove and is connected to the air intake assembly; when the pushing member is driven to move along the slide groove, the air intake assembly moves back and forth in the accommodating space.

[0011] Preferably, the outer tube is circumferentially slidably connected with a push ring; the push ring is connected to the portion of the push member extending out of the slide groove.

[0012] Preferably, a limiting hole is provided at the bottom of the outer tube; a limiting spring pin is provided on the pushing ring; when the limiting spring pin moves to the bottom of the outer tube following the pushing ring, the locking tongue of the limiting spring pin automatically extends into the limiting hole.

[0013] Preferably, a return assembly is also provided on the outer circumference of the outer tube; the return assembly includes a mounting block and a return spring; the mounting block is located on the outer circumference of the outer tube; there is at least one return spring, one end of which is connected to the mounting block and the other end is connected to the push ring; when the return spring is in a free state, the air intake assembly is completely retracted into the accommodating space.

[0014] The beneficial effects of the utility model are:

[0015] (1) The dual-purpose suction head includes an inner tube, an outer tube and an air inlet assembly. The air inlet assembly moves between the inner tube and the outer tube. When the air inlet assembly moves out from between the inner tube and the outer tube, the cross-sectional area of ​​the air inlet assembly automatically increases, thereby increasing the smoking area; when the air inlet assembly moves in the opposite direction to between the inner tube and the outer tube, the air inlet assembly automatically shrinks and is located in the accommodating space, thereby ensuring the use of the inner tube to absorb liquid.

[0016] (2) A slide groove is provided on the outer tube, and a push piece is connected to the air inlet assembly, and the push piece passes through the slide groove and extends out of the outer tube; a push ring connected to the push piece is provided on the outer tube, and a limit spring pin is provided on the push ring, and a limit hole is provided at the bottom of the outer tube. When the push ring descends to the bottom of the outer tube, the lock tongue of the limit spring pin is automatically inserted into the limit hole, thereby limiting the air inlet assembly and preventing the air inlet assembly from moving.

[0017] (3) A return assembly is provided on the outer side of the outer tube. After the limit spring pin is released from the limit, the return assembly can automatically drive the air inlet assembly to retract into the accommodating space, thereby facilitating the use of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure in the liquid absorption state in Example 1 of the utility model;

[0019] Figure 2 It is a schematic diagram of the overall structure in the air-inhaling state in Embodiment 1 of the utility model;

[0020] Figure 3 It is a structural schematic diagram of a spring sheet in Embodiment 1 of the utility model;

[0021] Figure 4 This is a schematic diagram of the position of the limit spring pin when in the liquid absorption state in Example 2 of the utility model;

[0022] Figure 5 It is a schematic diagram of the position of the limit spring pin in embodiment 2 of the utility model when it is in the air intake state.

[0023] Markings in the figure are: 1 is an inner tube, 2 is an outer tube, 3 is an air intake assembly, 31 is a spring sheet, 32 is a transparent film, 33 is a rubber strip, 4 is a connecting ring, 5 is a pusher, 6 is a push ring, 7 is a limit spring pin, 8 is a limit hole, 9 is a return assembly, 91 is a mounting block, and 92 is a reset spring. DETAILED DESCRIPTION

[0024] The utility model is described in detail below with reference to the accompanying drawings.

[0025] It should be noted that the terms such as "upper", "lower", "left", "right", "front", "back", etc. used in the utility model are only for the convenience of description and are not used to limit the scope of implementation of the utility model. Changes or adjustments in their relative relationships should be regarded as the scope of implementation of the utility model without substantially changing the technical content.

[0026] Embodiment 1

[0027] like Figure 1-2 As shown, a dual-purpose suction head of a medical suction device is provided, including an air inlet assembly 3, an inner tube 1 and an outer tube 2; the inner tube 1 is connected to the suction connecting tube of the suction device, and the inner tube 1 and the suction connecting tube are connected end to end, that is, liquid or gas can move into the suction connecting tube through the inner tube 1.

[0028] The outer tube 2 is coaxially sleeved with the inner tube 1, and the gap between the outer tube 2 and the head of the inner tube 1 is in a blocked state; the inner tube 1 and the outer tube 2 are made of transparent materials, the inner tube 1 and the outer tube 2 remain relatively still, and the accommodating space between the inner tube 1 and the outer tube 2 is in an open bottom state; the air intake assembly 3 can move along the axial direction of the inner tube 1 in the accommodating space, and when the air intake assembly 3 moves out of the accommodating space, the cross-sectional size of the air intake assembly 3 gradually increases; on the contrary, when the air intake assembly 3 moves from the outside of the accommodating space to the inside of the accommodating space, the cross-sectional size of the air intake assembly 3 gradually decreases.

[0029] Specifically, the inner tube 1 is also slidably sleeved with a connecting ring 4 in the circumferential direction, that is, the connecting ring 4 is located in the accommodating space, and the connecting ring 4 moves up and down along the axis of the inner tube 1; the air inlet assembly 3 includes a spring sheet 31 and a transparent film 32; there are multiple spring sheets 31, and they are distributed in a ring shape in the circumference of the connecting ring 4; the number of spring sheets 31 is usually 4, 6 or 8, and the width of the spring sheet 31 should be reduced as much as possible, and can be selected according to the strength or elastic force requirements; the spring sheet 31 is installed on the connecting ring 4, and gradually expands outward from the outer wall of the connecting ring 4; the transparent film 32 covers multiple spring sheets 31 and is connected to the connecting ring 4 at the top; the connection between the transparent film 32 and the spring sheet 31 can refer to the prior art, which is In order to prevent the spring sheet 31 from damaging the transparent film 32 when the air inlet assembly 3 contracts, the outer side of the spring sheet 31 may include a soft wear-resistant material, such as rubber; when the spring sheet 31 is located in the accommodating space, the spring sheet 31 is pressed against the inner wall of the outer tube 2; when the spring sheet 31 moves out of the accommodating space, multiple spring sheets 31 are transformed from a compressed state to a state of restoring their own deformation. After the spring sheet 31 restores its own shape, the transparent film 32, the spring sheet 31, and the connecting ring 4 form an umbrella-shaped structure or a semi-closed multi-sided pyramid structure; when in use, the umbrella-shaped structure or the semi-closed multi-sided pyramid structure formed by the transparent film 32 is set within the range where smoking is required, thereby increasing the smoking range and effectively improving the smoke suction effect.

[0030] Specifically, Figure 3 As shown, the spring sheet 31 includes a straight portion and an oblique portion connected end to end; the end of the straight portion facing away from the oblique portion is installed on the connecting ring 4; when the air intake assembly 3 extends out of the accommodating space and is in an air intake state, the oblique portion completely extends out of the accommodating space, and the setting of the straight portion can ensure the connection stability between the spring sheet 31 and the connecting ring 4.

[0031] Furthermore, an arc-shaped rubber strip 33 is provided at the end of the spring sheet 31, that is, a rubber strip 33 is provided at the end of the oblique line portion. When the spring sheet 31 is completely located in the accommodating space, multiple rubber strips 33 are abutted to form a ring and are located between the inner tube 1 and the outer tube 2, that is, the setting of the rubber strip 33 can seal the accommodating space to a certain extent during liquid aspiration, thereby preventing blood from entering between the inner and outer tubes; the rubber strip 33 can of course also be a straight line, and when the rubber strip 33 enters the accommodating space, a polygonal structure is formed.

[0032] Specifically, the outer tube 2 is provided with a slide groove extending axially along the outer tube 2, and the slide groove (not shown in the figure) can be in the shape of a waist-shaped groove or a long strip structure; the inner tube 1 is provided with a pushing member 5; the pushing member 5 passes through the slide groove and is connected to the air intake port assembly 3, that is, it can be connected to the spring sheet 31, and of course it can also be connected to the connecting ring 4; when the pushing member 5 is driven to move along the slide groove, the air intake port assembly 3 moves back and forth in the accommodating space, and the extension length of the slide groove can be set to match the moving distance of the connecting ring 4, so that the slide groove is used to prevent the connecting ring 4 from detaching from the inner tube 1; the pushing member 5 is a cylindrical structure, or a push switch structure, or other common shapes, that is, the pushing member 5 is driven to rise and fall along the slide groove by external force, so that the air intake port assembly 3 can slide out of the accommodating space, or return to the accommodating space.

[0033] Furthermore, the outer tube 2 is circumferentially slidably connected with a push ring 6; the push ring 6 is connected to the portion of the push member 5 extending out of the slide groove, and the push ring 6 can also be made of a transparent or translucent material. The push ring 6 can facilitate the operator to drive the connecting ring 4 and the air intake assembly 3 to rise and fall.

[0034] Embodiment 2

[0035] like Figure 4 and 5 As shown, a limiting hole 8 is provided on the bottom circumferential surface of the outer tube 2; a limiting spring pin 7 is provided on the pushing ring 6; the structure of the limiting spring pin 7 can refer to the prior art, and the attached figure only shows an example of a limiting spring pin 7; when the limiting spring pin 7 moves up and down following the pushing ring 6, the locking tongue slides on the wall surface of the outer tube 2; when the limiting spring pin 7 moves to the end of the outer tube 2 following the pushing ring 6, the locking tongue of the limiting spring pin 7 automatically extends into the limiting hole 8, that is, after the locking tongue is inserted into the limiting hole 8, the movement of the pushing ring 6 and the air inlet assembly 3 is inhibited, and the air inlet assembly 3 is in a smoking state at this time; when liquid needs to be sucked, the limiting spring pin 7 is pulled outward, which can release the limiting spring pin 7 on the air inlet assembly 3, and after the pushing ring 6 drives the air inlet assembly 3 upward, the air inlet assembly 3 shrinks into the accommodating space.

[0036] Furthermore, a return assembly 9 is also provided on the outer periphery of the outer tube 2; the return assembly 9 includes a mounting block 91 and a return spring 92; the mounting block 91 is located on the outer periphery of the outer tube 2 and close to the end of the outer tube 2; there is at least one return spring 92, and one end is connected to the mounting block 91, and the other end is connected to the push ring 6; when there are multiple return springs 92, they are evenly distributed around the outer tube 2; when the return spring 92 is in a free state, the air inlet assembly 3 is completely retracted into the accommodating space; when the limit spring pin 7 is inserted into the limit hole 8, when the air inlet assembly 3 is in the smoking state, the return spring 92 is in a compressed state, and after the limit spring pin 7 releases the limit on the air inlet assembly 3, the return spring 92 restores its deformation, drives the air inlet assembly 3, the sliding ring, the push member 5 and the push ring 6 upward, and returns to the liquid suction state.

[0037] Furthermore, a telescopic hose (not shown in the figure) can be arranged on the outside of the return spring 92, that is, one end of the telescopic hose is installed on the push ring 6, and the other end is installed on the mounting block 91. The setting of the telescopic hose can wrap the return spring 92, thereby protecting the return spring 92 and preventing the return spring 92 from falling onto the human body.

[0038] In some other embodiments, the return assembly 9 can be arranged between the inner tube 1 and the outer tube 2 (not shown in the figure), that is, the mounting block 91 is arranged on the inner tube 1 near the head position, one end of the return spring 92 is connected to the mounting block 91, and the other end is connected to the connecting ring 4; when the air inlet assembly 3 is in the smoking state, the return spring 92 is in a stretched state; after the limit spring pin 7 releases the limit on the air inlet assembly 3, the return spring 92 restores the deformation, so that the air inlet assembly 3 is converted into the liquid suction state; further, the size of the mounting block 91 can be adapted to the gap between the inner tube 1 and the outer tube 2, that is, the mounting block 91 is used to block the gap between the head area of ​​the inner and outer tubes.

[0039] Working principle: when it is necessary to smoke during the operation, the pushing ring 6 and the pushing member 5 are pushed toward the bottom of the outer tube 2, and the connecting ring 4 drives the spring sheet 31 and the transparent film 32 downward. During the downward movement, the spring sheet 31 and the transparent film 32 move out of the accommodating space, and the spring sheet 31 recovers its deformation, thereby driving the transparent film 32 to unfold and form a semi-enclosed cover-like structure. When the pushing member 5 moves to the tail of the slide slot, the locking tongue of the limiting spring pin 7 is inserted into the limiting hole 8, so that the semi-enclosed cover-like structure formed by the transparent film 32 and the spring sheet 31 can expand the smoking area; at the same time, during the downward movement of the connecting ring 4, the reset spring 92 is compressed;

[0040] When it is necessary to aspirate liquid during surgery, the limit spring pin 7 is pulled out so that the locking tongue of the limit spring pin 7 disengages from the limit hole 8, thereby releasing the limit of the limit spring pin 7 on the suction port assembly 3; the reset spring 92 restores its deformation to drive the push ring 6, the push member 5, the spring sheet 31 and the transparent film 32 upward until the spring sheet 31 and the transparent film 32 are completely retracted into the accommodating space.

[0041] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0042] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should be regarded as the protection scope of the utility model.

Claims

1. A dual-purpose suction head for a medical suction device, characterized in that: The invention comprises an air inlet assembly (3), an inner tube (1) and an outer tube (2); the inner tube (1) is used for conducting with the suction connection tube of the suction device and being connected end to end; the outer tube (2) and the inner tube (1) are coaxially sleeved, and the gap between the outer tube (2) and the head of the inner tube (1) is in a blocked state; there is a containing space between the inner tube (1) and the outer tube (2) capable of accommodating the air inlet assembly (3) to move axially along the inner tube (1); when the air inlet assembly (3) moves out of the containing space, the cross-sectional size of the air inlet assembly (3) gradually increases; when the air inlet assembly (3) moves into the containing space, the cross-sectional size of the air inlet assembly (3) gradually decreases until it is located in the containing space; The inner tube (1) is also slidably sleeved with a connecting ring (4) in the circumferential direction; the air inlet assembly (3) comprises a spring sheet (31) and a transparent film (32); there are a plurality of spring sheets (31) which are distributed in a ring shape in the circumferential direction of the connecting ring (4); the spring sheets (31) are mounted on the connecting ring (4) and gradually expand outward from the outer wall of the connecting ring (4); the transparent film (32) covers the plurality of spring sheets (31) and is connected to the connecting ring (4) at the top; when the spring sheets (31) are located in the accommodating space, the spring sheets (31) are pressed against the inner wall of the outer tube (2).

2. The dual-purpose suction head of the medical suction device according to claim 1, characterized in that: The spring sheet (31) comprises a straight portion and an oblique portion connected end to end; the end of the straight portion facing away from the oblique portion is mounted on a connecting ring (4); when the air intake assembly (3) extends out of the accommodating space and is in an air intake state, the oblique portion completely extends out of the accommodating space.

3. The dual-purpose suction head of the medical suction device according to claim 1, characterized in that: An arc-shaped rubber strip (33) is provided at the end of the spring sheet (31); when the spring sheet (31) is completely located in the accommodating space, a plurality of rubber strips (33) abut against each other to form a ring shape and are located between the inner tube (1) and the outer tube (2).

4. The dual-purpose suction head of the medical suction device according to claim 1, characterized in that: The outer tube (2) is provided with a slide groove extending along its axial direction; the inner tube (1) is provided with a push member (5); the push member (5) passes through the slide groove and is connected to the air intake assembly (3); when the push member (5) is driven to move along the slide groove, the air intake assembly (3) moves back and forth in the accommodating space.

5. The dual-purpose suction head of the medical suction device according to claim 4, characterized in that: The outer tube (2) is circumferentially slidably connected with a push ring (6); the push ring (6) is connected to the portion of the push member (5) extending out of the slide groove.

6. The dual-purpose suction head of the medical suction device according to claim 5, characterized in that: A limiting hole (8) is provided at the bottom of the outer tube (2); a limiting spring pin (7) is provided on the pushing ring (6); when the limiting spring pin (7) moves to the bottom of the outer tube (2) following the pushing ring (6), the locking tongue of the limiting spring pin (7) automatically extends into the limiting hole (8).

7. The dual-purpose suction head of the medical suction device according to claim 6, characterized in that: A return assembly (9) is also provided on the outer circumference of the outer tube (2); the return assembly (9) comprises a mounting block (91) and a return spring (92); the mounting block (91) is located on the outer circumference of the outer tube (2); there is at least one return spring (92), one end of which is connected to the mounting block (91) and the other end of which is connected to the push ring (6); when the return spring (92) is in a free state, the air inlet assembly (3) is completely retracted into the accommodating space.

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