CN214906590U - Endoscope insertion tube - Google Patents

Abstract

The utility model discloses an endoscope insertion tube, including preceding fixed part, flexion and extension, the one end of flexion and the one end looks fixed connection of preceding fixed part, the other end and the one end looks fixed connection of extension, preceding fixed part is equipped with fixed position, and fixed position is equipped with first fixed arm and second fixed arm, and in first fixed arm and second fixed arm stretched into preceding fixed part, first fixed arm and second fixed arm symmetry about mutually, first fixed arm was not continuous with the second fixed arm. The utility model discloses simple structure sets up fixed position, on the basis that does not increase the insertion tube internal diameter width, increases the accommodation space to wire rope or spring steel, is convenient for carry out welded fastening to wire rope or spring steel, makes wire rope or spring steel more firm, has improved the life of endoscope insertion tube, makes the flexion can reach bigger bending angle. Set up first fillet and second fillet at the wire casing open end, improved stability, reduce the wearing and tearing to wire rope, protect wire rope better.

Description

Endoscope insertion tube

Technical Field

The utility model relates to a medical appliance, in particular to an endoscope insertion tube.

Background

The existing endoscope controls the bending part to bend into various angles by stretching or tightening a steel wire rope welded on the bending part through a handle, but at present, the steel wire rope has the problems of large occupied space, increased width of the inner diameter of an insertion pipe, small welding contact area, insecure steel wire rope and the like in the welding connection with the bending part. The wire casing top of flexion is the right angle, and when the flexion was crooked, the right angle of top both sides often contacted with wire rope, causes wearing and tearing to wire rope easily to when bend angle, unable wire casing top of avoiding presss from both sides wire rope, presss from both sides wire rope easily with wire rope and breaks.

Therefore, it is desirable to provide a new endoscope insertion tube, which is integrally formed and facilitates the fixation of the steel cable and reduces the abrasion of the steel cable from the wire chase.

SUMMERY OF THE UTILITY MODEL

According to the utility model discloses an aspect provides an endoscope insertion tube, including preceding fixed part, flexion and extension, the one end of flexion and the one end looks fixed connection of preceding fixed part, the other end and the one end looks fixed connection of extension, preceding fixed part is equipped with fixed position, and fixed position is equipped with first fixed arm and second fixed arm, and in first fixed arm and second fixed arm stretched into preceding fixed part, first fixed arm and second fixed arm symmetry about mutually, first fixed arm is not continuous with the second fixed arm.

The utility model has the advantages that: the utility model discloses fixed part before being equipped with to fixed part sets up fixed position in the front, in first fixed arm and second fixed arm stretched into preceding fixed part, first fixed arm and second fixed arm bilateral symmetry just do not connect, form an accommodation space between first fixed arm and second fixed arm like this, first fixed arm and second fixed arm are used for welding wire rope or spring steel, can save space, the welding operation of being convenient for. Meanwhile, the contact area between the steel wire rope or the spring steel and the front fixing part is increased, so that the welding is firmer, and the subsequent polishing treatment is facilitated. The utility model discloses an endoscope insert tube, simple structure through setting up fixed position, on the basis that does not increase the insert tube internal diameter width, increases the accommodation space to wire rope or spring steel, is convenient for carry out welded fastening to wire rope or spring steel, makes wire rope or spring steel more firm, has improved endoscope insert tube's life.

In some embodiments, the fixing positions include an upper fixing position and a lower fixing position, the upper fixing position is multiple, the lower fixing position is multiple, and the positions of the upper fixing position and the lower fixing position are in one-to-one up-and-down correspondence. Go up the fixed position and all be used for welding wire rope or spring steel with lower fixed position, go up the position phase one-to-one of fixed position down and correspond, be convenient for in the use, control wire rope or spring steel tensile or tighten up the flexion to realize multiple bending angle.

In some embodiments, the utility model discloses still include the back fixed part, the one end of back fixed part and the other end fixed connection of flexion, the other end with the one end looks fixed connection of extension. The rear fixing part is arranged, so that the steel wire rope or the spring steel can be conveniently welded and connected between the bending part and the extending part, and the bending part can be conveniently controlled at a larger bending angle.

In some embodiments, the rear fastening portion is structurally identical to the front fastening portion. The rear fixing portion is fixed through the arrangement, on the basis that the inner diameter width of the insertion pipe is not increased, the accommodating space for the steel wire rope or the spring steel is increased, welding and fixing are convenient to carry out on the steel wire rope or the spring steel, and the steel wire rope or the spring steel is firmer.

In some embodiments, the front fixing portion, the bent portion, the rear fixing portion, and the extension portion are an integrally molded structure. Has better strength and prolongs the service life of the inserting pipe.

In some embodiments, the curved portion is provided with a wire slot, the wire slot is provided with an open end, and two sides of the open end are respectively provided with a first fillet and a second fillet. The wire groove can improve the bending performance of the bending part. When the bending part is bent up and down, the first fillet or the second fillet supports the bending part at two points, so that the stability is improved. When the bending part is bent, the first fillet or the second fillet can reduce the abrasion to the steel wire rope, so that the steel wire rope is better protected.

In some embodiments, the first rounded corner is symmetrical to the second rounded corner. When the bending part is bent, the steel wire rope is prevented from being clamped and broken by the wire groove.

In some embodiments, the number of the line grooves is multiple, and the multiple line grooves are distributed in parallel in an staggered manner. A plurality of wire casings are distributed in a staggered and parallel mode, so that the elasticity of the bending portion is improved, the bending angle of the bending portion is enlarged, and the bending portion is convenient to control.

In some embodiments, the elongated portion surface is provided with a first thread, a second thread, and a third thread. The first, second and third threads are for increasing friction of the surface of the elongated portion.

In some embodiments, the pitch to width ratio of the first, second, and third threads is 1: 2: 3. the width of the space between the first thread and the third thread is gradually increased, so that the friction force on the surface of the extension part from the position of the first thread to the position of the third thread is gradually reduced.

Drawings

Fig. 1 is a schematic configuration diagram of an endoscope insertion tube according to an embodiment of the present invention.

Fig. 2 is a schematic structural view of a front fixing portion of an endoscope insertion tube according to an embodiment of the present invention.

Fig. 3 is a sectional view of a front fixing section of an endoscope insertion tube according to an embodiment of the present invention.

Fig. 4 is a plan view of an upper fixing position of an endoscope insertion tube according to an embodiment of the present invention.

Fig. 5 is a schematic structural view of a bending portion of an endoscope insertion tube according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 to 5, an endoscope insertion tube of the present invention includes a front fixing portion 1, a bending portion 2, a rear fixing portion 3, and an extension portion 4. One end of the bending part 2 is fixedly connected with one end of the front fixing part 1, the other end is fixedly connected with one end of the rear fixing part 3, and the other end of the rear fixing part 3 is fixedly connected with one end of the extension part 4. The front fixing portion 1, the bending portion 2, the rear fixing portion 3, and the extension portion 4 are integrally formed.

The front fixing portion 1 is in a hollow tubular shape, the front fixing portion 1 is provided with a fixing position 11, the fixing position 11 is provided with a first fixing arm 111 and a second fixing arm 112, the first fixing arm 111 and the second fixing arm 112 extend into the front fixing portion 1, the first fixing arm 111 and the second fixing arm 112 are symmetrical left and right, and the first fixing arm 111 is not connected with the second fixing arm 112. The fixed position 11 includes fixed position 12 and lower fixed position 13, and it is a plurality of to go up fixed position 12, and lower fixed position 13 is a plurality of, and the position looks one-to-one of a plurality of fixed positions 12 and a plurality of fixed positions 13 down of going up fixed position 12 is a plurality of. The rear fastening portion 3 has the same structure as the front fastening portion 1.

The bending portion 2 is provided with a wire casing 21, the wire casing 21 is provided with an opening end, two sides of the opening end are respectively provided with a first fillet 211 and a second fillet 212, and the first fillet 211 and the second fillet 212 are symmetrical left and right. The number of the line grooves 21 is multiple, and the line grooves 21 are distributed on the surface of the bending part 2 in a staggered and parallel manner.

The surface of the extension part 4 is provided with a first thread 41, a second thread 42 and a third thread 43, and the thread pitch ratio of the first thread 41, the second thread 42 and the third thread 43 is 1: 2: 3.

the utility model discloses in production, cut "H" type at preceding fixed part 1, press first fixed arm 111 and second fixed arm 112 to the fixed part 1 inside down, make first fixed arm 111 and second fixed arm 112 stretch into before fixed part 1 in, form fixed position 11, back fixed part 3 carries out the same operation. It is right the utility model discloses continue to add man-hour, can correspond the welding respectively with the one end of many wire rope or spring steel in the front on fixed part 1 and the last fixed position 12 of back fixed part 3 or fixed position 13 down, wire rope or spring steel's tip welding is on last fixed position 12 or fixed position 13's first fixed arm 111 and second fixed arm 112 down, improve wire rope or spring steel and last fixed position 12 or fixed position 13's contact surface down and connect, it is more firm to make the welding, the follow-up polishing treatment that carries on of being convenient for. The utility model discloses when using, through controlling the welding wire rope or the spring steel on the fixed position 11 of the different of fixed part 1 or back fixed part 3 in the front tensile or tighten up, control the bending angle and the crooked direction of flexion 2, make flexion 2 can reach bigger bending angle, the endoscope camera lens of being convenient for is observed. When the bending part 2 is bent, the first round angle 211 and the second round angle 212 at the opening end of the wire casing 21 support the bending part 2 at two points, so that the stability is improved, the observation by an endoscope lens is facilitated, the abrasion to the steel wire rope can be reduced, the steel wire rope or the spring steel is prevented from being clamped and broken by the wire casing 21 when the bending part 2 is bent, and the steel wire rope is better protected.

The utility model discloses an endoscope insert tube, simple structure through setting up fixed position 11, on the basis that does not increase the insert tube internal diameter width, increases the accommodation space to wire rope or spring steel, is convenient for carry out welded fastening to wire rope or spring steel, makes wire rope or spring steel more firm, has improved endoscope insert tube's life.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims (10)

1. Endoscope insertion tube, its characterized in that, including preceding fixed part, flexion and extension, the one end of flexion with the one end looks fixed connection of preceding fixed part, the other end with the one end looks fixed connection of extension, preceding fixed part is equipped with fixed position, fixed position is equipped with first fixed arm and second fixed arm, first fixed arm and second fixed arm stretch into in the preceding fixed part, first fixed arm and second fixed arm symmetry about mutually, first fixed arm is not continuous with the second fixed arm.

2. The endoscope insertion tube according to claim 1, wherein the fixing portion includes a plurality of upper fixing portions and a plurality of lower fixing portions, and the plurality of upper fixing portions and the plurality of lower fixing portions are in one-to-one correspondence with each other in position.

3. The endoscope insertion tube of claim 1, further comprising a rear fixing portion, one end of which is fixedly connected to the other end of the bending portion and the other end of which is fixedly connected to one end of the extension portion.

4. The endoscope insertion tube of claim 3, wherein the rear fixing portion is identical in structure to the front fixing portion.

5. The endoscope insertion tube of claim 3, wherein the front fixation portion, the curved portion, the rear fixation portion, and the extension portion are of an integrally formed construction.

6. The endoscope insertion tube of claim 1, wherein the curved portion is provided with a wire slot, the wire slot being provided with an open end, the open end being provided on both sides with a first rounded corner and a second rounded corner, respectively.

7. The endoscope insertion tube of claim 6, wherein the first rounded corner and the second rounded corner are symmetrical to one another.

8. The endoscope insertion tube of claim 6, wherein the plurality of linear grooves are arranged in parallel and staggered in the longitudinal direction.

9. The endoscope insertion tube of claim 1, wherein the surface of the extension is provided with a first thread, a second thread, and a third thread.

10. The endoscope insertion tube of claim 9, wherein the thread pitch ratio of the first, second and third threads is 1: 2: 3.

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