Patent Application
20110155135
1. Field of the Invention
The present invention relates to an isolation valve, and more particularly relates to an isolation valve for a closed suction device that provides a simplified design in lightweight to reduce the impact on patient, is operated easily and reduces manufacturing costs.
2. Description of Related Art
A closed suction device is used to draw secretion from a patient with a drawing force provided by a hospital vacuum source without moving a breathing circuit connector. Furthermore, the closed suction device is used to perform secretion suction on a patient while providing ventilation by the breathing circuit connector simultaneously. Consequently, this can reduce chances of negatively influencing patient safety.
Drawing secretion from a patient, a connecting device is built up on the conventional closed suction device to connect the patient end. The invention is to design an isolation valve in the connecting device to open or close the tubes between the closed suction device. Based on the isolation valve, the patient could maintain PEEP level and waste liquid is prevented from back-flowing to the patient during rinsing, which could prevent the patient's respiratory passage from infection during secretion suction. Furthermore, cross infection between the patients and medical personnel, patients and patients in a hospital can be avoided further. However, the isolation valve of the connecting device on an available closed suction device has complicated structure and cannot be operated conveniently. Also manufacturing costs of the isolation valve for a closed suction device are increased.
Therefore, the present invention provides an isolation valve to mitigate or obviate the aforementioned problems.
The main objective of the present invention is to provide an isolation valve for a closed suction device that can provide a simplified design, be operated easily and reduce manufacturing costs.
The isolation valve for a closed suction device in accordance with the present invention has a body and a valve. The body has a communicating channel, a patient end connector, a breathing circuit connector and a suction tube connector. The communicating channel has a chamber and an opening. The patient end connector, the breathing circuit connector and the suction tube connector are radially formed on and protrude from an external surface of the communicating channel and communicate with the chamber of the communicating channel. The valve is rotatably connected to the body and has an isolation pipe and a control button. The isolation pipe is rotatably mounted in the chamber of the communicating channel via the opening and has a communicating hole, an inlet hole and a sucking hole. The control button is formed on the isolation pipe above the top of the communicating channel.
Other objectives, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
With reference to
The body (10) has a communicating channel (11), a patient end connector (12), a breathing circuit connector (13) and a suction tube connector (14).
The communicating channel (11) is hollow and has a top, a bottom, an external surface, a chamber (111) and an opening (112). The chamber (111) is formed in the communicating channel (11) between the top and the bottom of the communicating channel (11). The opening (112) is formed through the top of the communicating channel (11) and communicates with the chamber (111).
The patient end connector (12) is radially formed on and protrudes from the external surface of the communicating channel (11), communicates with the chamber (111) of the communicating channel (11) and is connected to an airway device that is connected to a patient.
The breathing circuit connector (13) is radially formed on and protrudes from the external surface of the communicating channel (11), communicates with the chamber (111) of the communicating channel (11) and is connected to a respiratory system. Preferably, the breathing circuit connector (13) is perpendicular to the patient end connector (12).
The suction tube connector (14) is radially formed on and protrudes from the external surface of the communicating channel (11), communicates with the chamber (111) of the communicating channel (11) and is connected to the suction tube (30) and has an external surface, a connecting port (141), an irrigation tube (142), a secretion removing membrane (143) and an irrigation chamber (144).
The connecting port (141) is formed on and protrudes from the external surface of the suction tube connector (14) and has a free end. The irrigation tube (142) is detachably mounted around the free end of the connecting port (141) to inject liquid into the irrigation chamber (144) of the suction tube connector (14) to irrigate the suction tube (30). The secretion removing membrane (143) is mounted in the suction tube connector (14) near the connecting port (142). The irrigation chamber (144) is formed in the suction tube connector (14) between the communicating channel (11), the connecting port (141) and the secretion removing membrane (143). Preferably, the suction tube connector (14) aligns with the patient end connector (12) and is perpendicular to the breathing circuit connector (13).
The valve (20) is rotatably connected to the body (10) and has an isolation pipe (21) and a control button (22).
The isolation pipe (21) is rotatably mounted in the chamber (111) of the communicating channel (11) via the opening (112) and has a top, an external surface, a communicating hole (211), an inlet hole (212) and a sucking hole (213). The communicating hole (211) is radially formed through the external surface of the isolation pipe (21) and communicates with the patient end connector (12). The inlet hole (212) is radially formed through the external surface of the isolation pipe (21) and communicates with the breathing circuit connector (13). The sucking hole (213) is radially formed through the external surface of the isolation pipe (21) and communicates with the suction tube connector (14).
The control button (22) is formed on the top of the isolation pipe (21) above the top of the communicating channel (11) and has a periphery, multiple stems (221) and multiple direction marks (222). The stems (221) are formed on and protrude from the periphery of the control button (22) and each stem (221) has a top face. In a preferred embodiment, the control button (22) has three stems (221) respectively aligning with the patient end connector (12), the breathing circuit connector (13) and the suction tube connector (14). The direction marks (222) are respectively formed on the top faces of the stems (221) to provide a direction effect.
With reference to
With reference to
Furthermore, the secretion or the sputum remained in the suction tube connector (14) can be irrigated by liquid injecting into the irrigation chamber (144) via the irrigation tube (142) and the connecting port (141), and the waste liquid in the suction tube connector (14) will not back-flowing to the patient during the rinsing process.
The isolation valve for a closed suction device as described has the following advantages.
1. The design of the isolation valve for a closed suction device is simplified and in lightweight to reduce the impact on patient, and also will reduce the cost for manufacturing the isolation valve.
2. When the isolation valve in accordance with the present invention is used to draw secretion from a patient, the user only needs to rotate the control button (22) of the valve (20) to open or close the pipes. Therefore, the operation of the isolation valve for a closed suction device is easy.
Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and features of the invention, the disclosure is illustrative only. Changes may be made in the details, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
