CN204106321U - A kind of medical Tube adapter for drum membrane - Google Patents

Abstract

The utility model relates to a medical tympanic membrane tube inserter, which comprises an outer tube and a core rod. The tail end of the core rod extends out of the outer tube and is connected with a push handle. There is a groove opened in the radial direction, a control rod is arranged in the groove, the control rod and the bottom of the groove are connected by a compression spring, a through hole is arranged on the outer sleeve, and a housing is provided at the through hole, and the corresponding The position of the through hole is pierced with a push rod, the axis of the push rod coincides with the axis of the through hole, and the diameter of the push rod is smaller than the diameter of the through hole, one end of the push rod extends out of the housing and connects the button, and the other end of the push rod can be Extending into the through hole of the outer sleeve, a retaining ring is provided on the push rod, and the retaining ring is sleeved on the push rod inside the housing, and the distance between the retaining ring and the end of the push rod away from the button is greater than the thickness of the outer sleeve. The medical tympanic membrane tube inserter of the utility model is convenient to use, has good sight lines for operators, and can significantly improve the insertion efficiency and therapeutic effect of the ventilation tube.

Description

A medical tympanic tube inserter

technical field

The utility model relates to the technical field of medical instruments, in particular to a medical tympanic membrane tube inserter. the

Background technique

As we all know, patients with tympanic effusion caused by secretory otitis media or other reasons need to undergo tympanic membrane tube surgery to connect the inside and outside of the tympanic membrane to achieve the purpose of fluid removal and ventilation. Now the tympanic membrane tube is generally made of silica gel. Dumbbell-shaped slanted ventilator or T-shaped ventilator. During treatment, the ventilator is sent into the tympanic chamber through the bracket by the tympanic tube inserter. The existing tympanic tube inserter is equipped with a "Z" sleeve, and the sleeve There is a push rod, a fixed handle is provided at the rear end of the sleeve, and a push handle is provided at the rear end of the push rod. When in use, the ventilation tube is supported on the front end of the sleeve through the bracket and placed into the tympanic chamber, and the sleeve is fixed through the fixed handle. After pushing the push handle, the push rod moves forward in the cannula, and the vent tube is sent into the drilled tympanic membrane through hole. The disadvantage of this tympanic membrane vent tube inserter is that the operator has poor vision and the cannula fixation effect is poor. All of these directly affect the accuracy and therapeutic effect of ventilation tube placement. the

Utility model content

The purpose of this utility model is to provide a medical tympanic membrane tube inserter to solve the above-mentioned technical problems, which is easy to use, has a good line of sight for the operator, and can significantly improve the insertion efficiency and therapeutic effect of the ventilation tube. the

In order to solve the deficiencies of the above technical problems, the utility model adopts a technical solution as follows: a medical tympanic membrane tube inserter, comprising an outer tube and a core rod pierced inside the outer tube, and the tail end of the core rod extends out of the outer tube The pipe is connected with a push handle, and a return spring is arranged between the push handle and the outer sleeve. The core rod has a groove opened in the radial direction, and the groove is arranged at a position near the tail end of the core rod. A control rod is provided, and the control rod is connected to the bottom of the groove through a compression spring. The outer sleeve is provided with a through hole for the control rod to pass through. The through hole is covered with a housing, and the corresponding through hole in the housing is The position is pierced with a push rod, the axis of the push rod coincides with the axis of the through hole, and the diameter of the push rod is smaller than the diameter of the through hole, one end of the push rod extends out of the housing and connects to the button, and the other end of the push rod can extend into the jacket In the through hole of the tube, a retaining ring is provided on the ejector rod, and the retaining ring is sleeved on the ejector rod located inside the housing, and the distance between the retaining ring and the end of the ejector rod away from the button is greater than the thickness of the outer sleeve. the

A return spring is arranged between the retaining ring and the outer sleeve, and the return spring is sleeved on the push rod. 

Beneficial effect

The medical tympanic membrane inserter of the utility model is easy to use, has good sightlines for the operator, and can significantly improve the insertion efficiency and therapeutic effect of the ventilation tube.

Description of drawings

Fig. 1 is the initial state structure schematic diagram of the utility model tympanic membrane tube inserter;

Fig. 2 is a schematic view of the working state structure of the tympanic membrane inserter of the present invention;

Fig. 3 is a schematic diagram of the local structure of the groove of the core rod when the tympanic tube inserter of the present invention is in working condition;

Fig. 4 is a schematic diagram of the local structure of the groove of the core rod when the tympanic tube inserter of the utility model is in the initial state;

Marks in the figure: 1. Outer sleeve, 2. Core rod, 3. Push handle, 4. Return spring, 5. Groove, 6. Control rod, 7. Compression spring, 8. Through hole, 9. Housing, 10 , Push rod, 11, button, 12, retaining ring, 13, return spring.

Detailed ways

As shown in the figure, a medical tympanic membrane inserter includes an outer tube 1 and a core rod 2 pierced inside the outer tube 1. The tail end of the core rod 2 extends out of the outer tube 1 and is connected with a push handle 3. The push handle 3 is provided with a thin rubber sleeve, and a return spring 4 is arranged between the push handle 3 and the outer sleeve 1. The core rod 2 has a groove 5 opened in the radial direction, and the groove 5 is arranged on the core rod 2. position near the end. A control rod 6 is arranged in the groove 5, and the control rod 6 is connected with the bottom of the groove 5 through a compression spring 7. The outer sleeve 1 is provided with a through hole 8 for the control rod 6 to pass through. The cover is provided with a housing 9, and the position corresponding to the through hole 8 in the housing 9 is pierced with a push rod 10, the axis of the push rod 10 coincides with the axis of the through hole 8, and the diameter of the push rod 10 is smaller than the diameter of the through hole 8, One end of the push rod 10 extends out of the housing 9 and is connected to the button 11. The button 11 is covered with a thin rubber sleeve, and the other end of the push rod 10 can extend into the through hole 8 of the outer sleeve 1. The push rod 10 is also provided with a There is a retaining ring 12 , and the retaining ring 12 is sheathed on the push rod 10 inside the housing 9 , and the distance between the retaining ring 12 and the end of the push rod 10 away from the button 11 is greater than the thickness of the outer sleeve 1 . A return spring 13 is arranged between the retaining ring 12 and the outer sleeve 1 , and the return spring 13 is sheathed on the push rod 10 , so that the retaining ring 12 is tightly pushed against the inner wall of the housing 9 in the initial state. the

The usage method of the tympanic ventilator placement device of the utility model is as follows: in the initial state, the core rod is in a contracted state, the head end of the core rod does not protrude from the outer casing, the control rod is located in the groove, and the compression spring is in a compressed state, and the control rod is in a compressed state. The rod presses against the inner wall of the outer casing. Before use, press the push handle to move the core rod, and the head end of the core rod extends out of the outer casing until the control rod corresponds to the through hole on the outer casing. At this time, the control rod is compressing the spring Under the action of the control rod, it extends into the through hole, so that one part of the control rod is in the through hole, and the other part is in the groove, so that the locking between the outer casing and the core rod is realized, and then the ventilation tube is placed on the core rod from the outer casing. At the protruding end of the tube, one hand controls the core rod into the ear canal and places the vent tube precisely at the incision of the tympanic membrane, presses the button with the index finger, so that the ejector rod moves radially, and under the pressure of the ejector rod, the control rod finally Detach from the through hole and realize the contraction of the core rod in the outer tube under the action of the return spring, then pull the outer tube out from the ear canal to complete the placement of the ventilation tube. the

Claims (2)

1. A medical tympanic membrane inserter, characterized in that it includes an outer tube (1) and a core rod (2) pierced inside the outer tube (1), and the tail end of the core rod (2) extends out of the outer sleeve The tube (1) is connected with a push handle (3), and a return spring (4) is arranged between the push handle (3) and the outer casing (1), and the core rod (2) has a concave Groove (5), the groove (5) is set at the position near the tail end of the core rod (2), the control rod (6) is arranged in the groove (5), and the control rod (6) and the groove (5) The bottom is connected by a compression spring (7), and the outer sleeve (1) is provided with a through hole (8) through which the control rod (6) can pass, and the through hole (8) is covered with a housing (9) , the position corresponding to the through hole (8) in the shell (9) is pierced with a push rod (10), the axis of the push rod (10) coincides with the axis of the through hole (8), and the diameter of the push rod (10) is less than The diameter of the through hole (8), one end of the push rod (10) protrudes from the housing (9) and is connected to the button (11), and the other end of the push rod (10) can extend into the through hole (8) of the outer casing (1) ), the ejector rod (10) is also provided with a retaining ring (12), the retaining ring (12) is set on the ejector rod (10) inside the casing (9), and the retaining ring (12) and The distance from the end of the ejector rod (10) away from the button (11) is greater than the thickness of the outer sleeve (1). 2. A medical tympanic membrane inserter according to claim 1, characterized in that: a return spring (13) is arranged between the retaining ring (12) and the outer cannula (1), and the return spring (13 ) is sleeved on the push rod (10).