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Aspirator head
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An aspirator head and positioner technology, applied in wound drainage devices, catheters, etc., can solve problems such as occlusion of the operator's field of vision, inconvenience, and changes in liquid level.
Inactive Publication Date: 2012-07-04
武韶蕴
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Abstract
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Problems solved by technology
The disadvantage of this method is: the height of the mesh is fixed, but the liquid level is changed
The hand held at the negative pressure connector will block the operator's field of vision, causing inconvenience
Method used
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Embodiment 1
[0028] The inner and outer tubes move up and down relative to each other: as the liquid level drops, the outer tube moves down to cover the hole of the inner tube that is higher than the liquid level, effectively avoiding the decline of the suction effect.
[0029] Such as Figure 4 with Figure 5 As shown, the structure of the single-hole outer tube and the porous inner tube is shown. The upper end of the inner tube is connected to the upper limiter and the negative pressure connector; the lower end of the inner tube is connected to the lower limiter, and the lower end of the inner tube is provided with a The opening 7, the liquid flows into the inner lumen from the opening, and then flows into the negative pressure generating end through the negative pressure connector.
[0030] When in use, the single-hole outer tube can move along the inner tube, covering part of the inner tube as needed (such as Image 6 shown).
Embodiment 2
[0032] Rotational displacement: rotate the outer tube, the short openings of different heights and angles of the outer tube coincide with the long openings of the inner tube in turn as the rotation angle changes. As the liquid level drops, this method can close the openings above the liquid level step by step, ensuring maximum suction efficiency. Through this method of opening the air holes step by step, it can also effectively avoid tissues of different heights and avoid being sucked into the suction device, so that only liquid can be sucked, and no tissues can be sucked.
[0033] Such as Figure 7 , Figure 8 with Figure 9 As shown, it shows the structure of an outer tube with two holes, an inner tube with a larger hole, and a structure where the two holes of the outer tube coincide with the holes of the inner tube when the inner tube and the outer tube are used together. When the liquid level is high , the two small holes 9 of the outer tube coincide with the large hole...
Embodiment 3
[0035] Another kind of rotation displacement: rotate the outer tube, the short openings of different heights and angles of the inner tube coincide with the long openings of the outer tube in turn as the rotation angle changes. As the liquid level drops, this method can close the openings above the liquid level step by step, ensuring maximum suction efficiency. Through this method of opening air holes at different angles alternately, it can also effectively avoid tissues at different positions, avoid being sucked into the suction device, and achieve only suction of liquid, not tissue.
[0036] Such as Figure 11 , Figure 12 with Figure 13 As shown, it shows the outer tube with a large hole at the lower end, the inner tube with two holes at the lower end at different heights and angles, and when the inner tube and the outer tube are used in combination, the large hole of the outer tube coincides with the upper end hole of the inner tube, and the lower end hole of the inner t...
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Abstract
The invention discloses an aspirator head, which comprises an inner tube, an outer tube, a limiter and a negative pressure connector. The inner tube tightly clings to the outer tube, the limiter comprises an upper limiter and a lower limiter, and the upper end of the inner tube is connected with the upper limiter and the negative pressure connector; a hole is arranged on a wall of the lower end of one of the inner tube and the outer tube; a plurality of holes are arranged on a wall of the other one of the inner tube and the outer tube; and the outer tube is limited outside the inner tube via the upper limiter and the lower limiter and tightly clings to the inner tube, the horizontal height of the outer tube outside the inner tube is limited in a range from 0.1cm to 40cm, the outer tube rotates around the inner tube, and the holes of one of the outer tube and the inner tube are successively coincident with the hole of the other one of the outer tube and the inner tube along with change of a rotation angle. The upper limiter and the lower limiter are adopted, so that the outer tube can conveniently rotate relative to the inner tube freely so as to move under the condition that the outer tube does not drop. The aspirator head does not contact with tissues at different positions, realizes a purpose of only aspirating liquid but not aspirating the tissues, and further can descend along the liquid level, and the holes above the liquid level are closed sequentially, so that the largest aspiration efficacy is guaranteed.
Description
technical field [0001] The invention relates to an aspirator head, in particular to an aspirator head in operation. Background technique [0002] During surgery the patient will bleed. In order to absorb the accumulated blood to expose a better surgical field of view, it is generally necessary to use a suction device to suck the blood away. [0003] The clinically commonly used aspirator consists of an inner tube, an outer tube and a negative pressure connector. The end of the outer tube is closed with mesh holes 1 (such as figure 1 ). The inner tube 2, the upper fixer 3 and the negative pressure connector 4 are connected as a whole (such as figure 2 ). The outer tube is fixed on the inner tube by the upper fixer and cannot be moved. The position and size of the hole on the outer tube will not change. There is a gap between the outer tube and the inner tube to allow the free flow of liquid. The liquid can enter the gap between the inner and outer tubes from the mesh...
Claims
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Application Information
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