Auxiliary extension device for ultrasonic endoscope puncture

Abstract

The utility model relates to an auxiliary extension device for ultrasonic endoscope puncture. The auxiliary extension device comprises a needle seat, a sleeve, a puncture needle, a transmission tube and a driving assembly, the cannula is rotatably connected to the interior of the needle base, the puncture needle is arranged in the needle base and the cannula in a penetrating mode, the puncture needle can move left and right in the X-axis direction, and the transmission tube is communicated to the right end of the puncture needle. According to the auxiliary lengthening device for ultrasonic endoscope puncture, the sleeve is rotated to drive the driving assembly to work, dynamic adjustment of the length of a puncture needle is achieved so as to adapt to lesion areas of different depths, and the adaptability and flexibility of puncture treatment are improved; the precise linear movement of the puncture needle in the X-axis direction is ensured, the puncture accuracy and stability are improved, the rotation freedom degree of the moving block and the puncture needle during rotation of the sleeve is effectively limited through the arrangement of the guide rod, unnecessary rotation is prevented, and the operation stability and safety are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, concretely is a kind of auxiliary extension device for endoscopic ultrasound puncture. BACKGROUND

[0002] As a technology that combines endoscopy and ultrasound, endoscopic ultrasound is often used to puncture and drain cystic fluid in deep-seated cystic lesions in internal organs to determine the nature of the lesions. Puncture devices are surgical instruments that puncture the wall of a body cavity and provide a channel for other surgical instruments to enter the body cavity. They are a type of minimally invasive surgical instrument.

[0003] Currently, the puncture needle used with endoscopic ultrasound has a fixed length. However, the fixed length of the puncture needle limits the flexibility of the physician's operation in complex or special anatomical structures. In the face of lesions of different depths or angles, a puncture needle of fixed length may not be able to accurately reach the target area. Moreover, in the face of different locations and depths of lesions in the digestive tract and its surroundings, a puncture needle of fixed length may not be suitable for all types of lesions. For example, for deeper or shallower lesions, a puncture needle of fixed length may not be able to accurately reach the target area. SUMMARY

[0004] To address the shortcomings of the prior art, the utility model provides an auxiliary extension device for endoscopic ultrasound puncture, which solves the problem of the fixed length of the puncture needle.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an auxiliary extension device for endoscopic ultrasound puncture, comprising a needle seat, a sleeve, a puncture needle, a transmission pipe and a driving assembly.

[0006] The sleeve is rotationally connected inside the needle seat, the puncture needle is disposed through the inside of the needle seat and the sleeve, and the puncture needle can move left and right along the X-axis direction. The transmission pipe is connected to the right end of the puncture needle, and the driving assembly is arranged on the sleeve.

[0007] The driving assembly includes an internal thread formed in the inner circumferential wall of the sleeve, a moving block threadedly connected inside the sleeve, an external thread formed on the outer circumferential surface of the moving block, and the moving block fixedly sleeved outside the puncture needle.

[0008] A stop ring is arranged on the inner circumferential wall of the needle seat, at least two guide rods are assembled to the right side of the inner wall of the sleeve, and the moving block is slidingly connected outside the guide rods, so that when the sleeve rotates, the moving block can drive the puncture needle to move left and right along the extension direction of the guide rods.

[0009] Further, at least two convex rings are arranged on the side where the inner circumferential walls of the sleeve and the needle seat are in contact.

[0010] Corresponding to the convex ring, a groove matched with the convex ring is formed in the inner circumferential wall of the needle seat, so that the sleeve can rotate on the ZY plane.

[0011] Further, the at least two guide rods are symmetrically arranged on the front and rear sides of the puncture needle.

[0012] Further, at least two through holes are formed in the interior of the moving block, and the at least two guide rods pass through the through holes, respectively.

[0013] Further, a plurality of abrasive ribs are integrally formed on the outer side of the sleeve.

[0014] Further, the blocking ring is sleeved on the outer side of the puncture needle.

[0015] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:

[0016] The auxiliary extension device for endoscopic puncture realizes dynamic adjustment of the length of the puncture needle by rotating the sleeve to drive the driving assembly, so as to adapt to different depth of the lesion area, and improve the adaptability and flexibility of the puncture treatment. The threaded connection between the sleeve and the moving block ensures the accurate linear movement of the puncture needle in the X-axis direction, improves the accuracy and stability of the puncture, and the setting of the guide rod effectively limits the rotation freedom of the moving block and the puncture needle when the sleeve rotates, prevents unnecessary rotation, and ensures the stability and safety of the operation. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the present application;

[0018] Figure 2 It is a sectional view of the present application;

[0019] Figure 3 It is a structural schematic view of the present application Figure 2 It is an enlarged schematic view of structure A in the present application.

[0020] In the figure: 1, needle seat; 2, sleeve; 3, puncture needle; 4, transmission pipe; 5, driving assembly; 501, internal thread; 502, moving block; 503, blocking ring; 504, guide rod; 6, convex ring. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0022] Referring to Figures 1-3 The auxiliary extension device for endoscopic puncture in the embodiment is used to extend or shorten the length of the puncture needle 3 according to the depth of the lesion area, so as to adapt to puncture treatment of different depths.

[0023] Specifically, the sleeve 2 is rotationally connected in the interior of the needle seat 1, the puncture needle 3 is arranged in the interior of the needle seat 1 and the sleeve 2, and the puncture needle 3 is movable left and right along the X-axis direction, the transmission pipe 4 is connected to the right end of the puncture needle 3, and the driving assembly 5 is arranged on the sleeve 2.

[0024] In actual use, the sleeve 2 drives the driving assembly 5 to drive the puncture needle 3 to move along the X-axis direction through cooperation between the internal components of the driving assembly 5, so as to adjust the distance between the needle tip of the puncture needle 3 and the needle seat 1, and to extend or shorten the puncture needle 3.

[0025] In detail, in order to drive the puncture needle 3 to move left and right along the X-axis direction when the sleeve 2 is rotated, the driving assembly 5 in the embodiment includes an internal thread 501 formed in the inner circumferential wall of the sleeve 2, a moving block 502 threadedly connected in the interior of the sleeve 2, an outer thread formed in the outer circumferential surface of the moving block 502 and matched with the internal thread 501, and the moving block 502 fixedly sleeved on the outside of the puncture needle 3; a stop ring 503 is arranged on the inner circumferential wall of the needle seat 1, at least two guide rods 504 are assembled to the right side of the inner wall of the sleeve 2, and the moving block 502 is slidingly connected to the outside of the guide rods 504, so that the moving block 502 can drive the puncture needle 3 to move left and right along the extension direction of the guide rods 504 when the sleeve 2 is rotated.

[0026] In actual use, the sleeve 2 and the moving block 502 are threadedly connected, and the moving block 502 moves left and right along the X-axis direction when the sleeve 2 is rotated, and drives the puncture needle 3 to slide in the interior of the needle seat 1 and the sleeve 2, and the sleeve 2 only moves along the extension direction of the guide rods 504 in the process of rotation through the limiting action of the guide rods 504, effectively preventing the sleeve 2 from rotating to drive the moving block 502 and the puncture needle 3 to rotate.

[0027] In actual setting, the guide rods 504 effectively limit the rotation freedom of the moving block 502 and the puncture needle 3 when the sleeve 2 is rotated, ensure that they only move along the extension direction of the guide rods 504, avoid unnecessary rotation, and improve the stability and safety of operation. Through the thread connection between the sleeve 2 and the moving block 502, the puncture needle 3 is accurately and linearly moved along the X-axis direction, and the stability and accuracy of the puncture needle 3 in the moving process are ensured.

[0028] Further, in order to ensure the stability of the rotation of the sleeve 2 inside the needle seat 1 and prevent the sleeve 2 from falling off the needle seat 1, at least two convex rings 6 are arranged on the side of the sleeve 2 that is in contact with the inner circumferential wall of the needle seat 1; corresponding to the convex rings 6, grooves that are adapted to the convex rings 6 are opened on the inner circumferential wall of the needle seat 1, so that the sleeve 2 can rotate on the ZY plane.

[0029] In actual arrangement, the convex rings 6 are tightly matched with the grooves on the inner circumferential wall of the needle seat 1, which provides a stable rotation center for the sleeve 2, reduces the shaking and deviation during rotation, and thus improves the stability and reliability of rotation; through the mutual engagement of the convex rings 6 and the grooves, the axial movement of the sleeve 2 inside the needle seat 1 is effectively limited, the accidental falling of the sleeve 2 during rotation is prevented, and the safety and integrity of the equipment are ensured.

[0030] Further, the at least two guide rods 504 are symmetrically arranged on the front and rear sides of the puncture needle 3, at least two through holes are opened in the inner part of the moving block 502, and the at least two guide rods 504 respectively pass through the at least two through holes; the blocking ring 503 is sleeved on the outer side of the puncture needle 3.

[0031] Preferably, in order to improve the friction force when rotating the sleeve 2, a plurality of abrasive ribs are integrally formed on the outer side of the sleeve 2.

[0032] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An auxiliary extension device for an endoscopic ultrasound puncture, characterized by: The utility model provides a needle set, including needle seat (1), sleeve (2), puncture needle (3), transmission pipe (4) and drive assembly (5); The sleeve (2) is rotationally connected in the inside of the needle seat (1), the puncture needle (3) is arranged in the inside of the needle seat (1) and sleeve (2) through, and the puncture needle (3) can move left and right along the X axis direction, the transmission pipe (4) is communicated in the right end of the puncture needle (3), and the drive assembly (5) is arranged on the sleeve (2); The drive assembly (5) includes the internal thread (501) of the inner wall of the sleeve (2), the moving block (502) is screw-connected in the inside of the sleeve (2), the outer circumferential surface of the moving block (502) is provided with the external thread matched with the internal thread (501), and the moving block (502) is fixedly sleeved on the outside of the puncture needle (3); The inner wall of the needle seat (1) is provided with the retaining ring (503), the right side of the inner wall of the sleeve (2) is equipped with at least two guide rods (504), the moving block (502) is slidably connected on the outside of the guide rod (504), so that the moving block (502) can drive the puncture needle (3) to move left and right along the extension direction of the guide rod (504) when the sleeve (2) rotates.

2. The auxiliary extension device for puncture of an endoscopic ultrasound according to claim 1, wherein: At least two convex rings (6) are arranged on the side of the inner wall of the sleeve (2) and the needle seat (1). Corresponding to the convex ring (6), the inner wall of the needle seat (1) is provided with the groove matched with the convex ring (6), so that the sleeve (2) can rotate on the ZY plane.

3. The auxiliary extension device for puncture of an endoscopic ultrasound according to claim 1, wherein: The at least two guide rods (504) are symmetrically arranged on the front and back sides of the puncture needle (3).

4. The auxiliary extension device for endoscopic puncture according to claim 1, characterized in that: At least two through holes are arranged in the inside of the moving block (502) and are respectively penetrated by the at least two guide rods (504).

5. The auxiliary extension device for endoscopic puncture according to claim 1, characterized in that: The outer side of the sleeve (2) is integrally provided with a plurality of abrasive ribs.

6. The auxiliary extension device for endoscopic puncture according to claim 1, characterized in that: The retaining ring (503) is sleeved on the outside of the puncture needle (3).

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