CN2211278Y

CN2211278Y - Mastoid suction tube

Info

Publication number: CN2211278Y
Application number: CN 94236325
Authority: CN
Inventors: 高法平; 吴殿荣; 高尉琪
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-12-31
Filing date: 1994-12-31
Publication date: 1995-11-01
Anticipated expiration: 2004-12-31

Abstract

The utility model relates to a mastoid suction tube which is realized by the improvement on the basis of a mastoid suction tube in the prior art. The utility model is characterized in that a tube body is a conical tube; the inner diameter of the front end of the tube body is smaller than the inner diameter of the tail end of the tube body; the front section of the tube body can also be a conical pipe, and the tail section of the tube body is a isodiametric tube. Due to the fact that a tube cavity at the tail end of the tube body is larger than a tube cavity at the front end of the tube body, operation dirt which can enter the front end of the tube body can smoothly passes through the whole tube cavity. Due to negative pressure, gas and liquid which enter the tube cavity are mixed, and the gas and liquid can also be formed into vortex flow to brush off the dirt sticking to a tube wall to keep the clear passage of a suction tube, so that the suction tube is not blocked. The mastoid suction tube does not need to be cleaned in an operation, which is favorable for a clear visual field in the operation, so that the operation is carried out successfully; the utility model has the advantage of convenient operation.

Description

Mastoid suction tube

This utility model belongs to the medical supplies technical scope, relates to the attic cannula that a kind of department of eye, ear nose, larynx section are used.

Attic cannula is department of eye, otorhinolaryngologic indispensable surgical instrument, and it mainly is to match with vacuum extractor, and dirts such as the blood in the absorption operating field, flushing liquor, pathological tissues guarantee that operating field is clear, so that operation.The attic cannula of prior art generally all is isometrical pipe, and promptly its body two ends internal diameter equates.Though this isometrical suction catheter can use in operation reluctantly, the pipeline of its narrow elongate is easy to be absorbed thing, condenses as blood, bone bits, granulation tissue, sphacelus cholesteatoma skin etc., be detained and stop up, need often to visit repeatedly logical, flushing, promptly mistake and require great effort the carrying out that influence is performed the operation; In addition, because the intraluminal dirt of suction catheter is difficult to remove thoroughly, not good because of Disinfection Effect toward the contact meeting, when shutdown stopped inhaling, the attraction thing flow backwards and the contaminated operation open country, causes surgical wound infection, causes suffering to patient.

Task of the present utility model provides a kind of not susceptible to plugging novel attic cannula, need not cleaning in the operation, saves time, and is easy to use, thereby overcomes the existing above-mentioned shortcoming of prior art attic cannula.

This utility model is to improve to realize that the postmedian that it assures body, body has graduated dial and negative pressure hole on the basis of prior art attic cannula, and tail end has convex tendon type sebific duct interface, and its main points are that its body is a conical pipe, and front inner diameter is less than the tail end internal diameter.

Below in conjunction with accompanying drawing this utility model is elaborated:

Fig. 1 is a front view of the present utility model

Fig. 2 is a vertical view of the present utility model

Fig. 3 is another embodiment of the present utility model

According to Fig. 1, shown in Figure 2, among the figure 1 be body, this body be conical pipe, front inner diameter less than the tail end internal diameter, the 1/3--2/3 that is roughly the tail end internal diameter with front inner diameter is comparatively suitable.Because the gradual from front to back increase of inner chamber, all dirts that can enter the front end tube chamber can both waltz through whole tube chamber very much, thereby can not result in blockage; In addition,, enter the gas and the liquid dirt of tube chamber, mix mutually, also can produce eddy current, the suction catheter inwall is carried out cleaning with water from the rational faculty, brush the dirt that sticks on the tube wall at any time, make suction catheter keep unblocked at the conical pipe intracavity because of the negative pressure relation.The postmedian of body 1 is provided with graduated dial 2 and negative pressure hole 3, is convenient to hand-held and prevents that negative pressure is excessive; The tail end of body 1 has convex tendon type sebific duct interface 4, is used for pressing suction pump to connect with tribute.

Said body (1), for guarantee its particularly leading portion both reached necessary tapering, and don't cause the two ends internal diameter ratio excessive, said body is that conical pipe can be that the leading portion of body (1) is a conical pipe, rear is isometrical pipe, as shown in Figure 3.

This utility model is reasonable in design, can be attracted the dirt obstruction of condensing by blood, flushing liquor, granulation tissue, bone bits etc., need not cleaning in the art, easy to use, help operating field clear and the operation carry out smoothly, saving time, alleviate patient's misery, is department of eye, otorhinolaryngologic a kind of comparatively ideal surgical instrument.

Claims

1, a kind of attic cannula comprises body (1), and the postmedian of body (1) is provided with graduated dial (2) and negative pressure hole (3), and tail end has convex tendon type sebific duct interface (4), it is characterized in that body (1) is a conical pipe, and front inner diameter is less than the tail end internal diameter.

2, attic cannula according to claim 1 is characterized in that said front inner diameter is roughly the 1/3-2/3 of said tail end internal diameter.

3, attic cannula according to claim 1 is characterized in that said body (1) is that the leading portion of body (1) is a conical pipe for conical pipe, and back segment is isometrical pipe.