Adjustable endoscope ultrasonic suction biopsy needle

Abstract

The utility model belongs to the technical field of biopsy needles, and particularly relates to an adjustable endoscope ultrasonic suction biopsy needle, which is characterized in that the extension length of a needle tube can be accurately controlled by limiting the movement range of a limiting sheet on the inner side of a limiting groove and controlling the left-right distance of a sliding sheet in a sliding groove, so that the biopsy depth can be accurately adjusted; by means of the design that the U-shaped block and the control spring control the sliding piece to move, under the requirement for different lengths of the biopsy needle, a worker can control the needle tube by blindly shifting the control handle left and right within the left-right range of the control groove, operation steps are simplified through the design, operation convenience is improved, and the labor intensity of workers is reduced. Through the arrangement of the screw rod and the knob, the position of the separation blade can be conveniently adjusted, so that an operator can more flexibly and accurately adjust the extension length of the biopsy needle, and the operation accuracy and the stability of the separation blade are improved.

Description

Technical Field

[0001] This invention belongs to the field of biopsy needle technology, specifically relating to an adjustable endoscopic ultrasound aspiration biopsy needle. Background Technology

[0002] In the medical field, biopsy needles are an important medical device widely used in the diagnosis of various diseases. Biopsy needles combine endoscopy and ultrasound technology. By placing a small ultrasound probe at the tip of the endoscope, the morphology and location of the lesion can be observed in real time, thereby ensuring accurate puncture of the biopsy needle.

[0003] However, although some adjustable-depth biopsy needles exist on the market, these products often suffer from inconsistent plunger lengths. Due to these variations, doctors need to frequently observe the plunger position during use to ensure the needle is inserted accurately to the intended depth. This not only increases the difficulty of the procedure but also increases the risk of errors, ultimately affecting the accuracy of the biopsy. Summary of the Invention

[0004] The purpose of this invention is to provide an adjustable endoscopic ultrasound aspiration biopsy needle to solve the problems mentioned in the background art.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0006] An adjustable endoscopic ultrasound aspiration biopsy needle includes a handle housing. An outer tube is fixed to the right side of the handle housing. A needle tube is slidably connected to the right end of the outer tube. A mandrel, which is throttled and driven by the needle tube, is slidably mounted on the inner side of the outer tube. Two symmetrical sliding grooves, oriented left and right, are installed on the inner side of the handle housing and are fixedly connected to the handle housing. A sliding plate is slidably mounted on the upper side of each groove and is driven by the mandrel. A limiting groove is formed on the upper side of the handle housing. A baffle plate is slidably connected to the limiting groove on the right side of the limiting groove. An adjustment component for controlling the baffle plate is installed on the upper side of the handle housing. A limiting plate matching the limiting groove and the baffle plate and fixedly connected to the sliding plate is installed on the upper side of the sliding plate. A slide rail is installed on the lower side of the sliding plate. A U-shaped block is slidably mounted on the upper side of the slide rail. Control springs fixedly connected to the left and right ends of the U-shaped block are installed on both sides of the sliding plate. A control groove oriented left and right is formed on the front side of the handle housing. A control handle, which is driven by the U-shaped block, is installed inside the control groove.

[0007] The adjustment assembly includes a screw that is threadedly connected to the handle housing, with its left side rotatably connected to the baffle, and a knob concentrically fixed to the right side of the screw.

[0008] The front side of the limiting groove is provided with a scale, and the front side of the baffle is fixed with a pointer that matches the scale.

[0009] A reinforcing rod matching the outer tube is installed on the right side of the handle housing.

[0010] The control handle includes a control rod fixed to the U-shaped block. A sliding sleeve is slidably fitted on the front side of the control rod, and a control block is fixed on the front side of the sliding sleeve. A return spring is fitted on the outer side of the control rod. The front and rear ends of the return spring are respectively connected to the sliding sleeve and the U-shaped block. A number of left-right spaced locking teeth are installed on the rear side of the control groove, and a locking plate matching the locking teeth is fixed on the rear side of the sliding sleeve.

[0011] The control block has an arc-shaped groove on its front side.

[0012] By limiting the range of motion of the limiting plate within the limiting groove, the lateral distance of the slider within the groove can be precisely controlled, thereby enabling precise adjustment of the biopsy depth. The design using a U-shaped block and control spring to control the slider's movement allows operators to blindly manipulate the needle within the control groove's left and right range, regardless of the required needle length. This simplifies operation and improves convenience. The screw and knob design allows for easy adjustment of the baffle position, enabling more flexible and precise adjustment of the biopsy needle's extension length, improving operational accuracy and baffle stability. The combination of the pointer and scale further enhances clarity. The position of the baffle plate allows for more precise extension and retraction of the needle tube. The strong rod enhances the stability and overall strength of the outer tube, thereby improving the safety and durability of the biopsy needle operation. The reset spring ensures that the sliding sleeve and control block automatically reset after the control block is released. The cooperation between the locking teeth and the locking plate allows the U-shaped block to be fixed when not in use, thus improving the safety of the biopsy needle operation. In use, simply pressing the control block inward allows the U-shaped block to slide left and right, making the biopsy needle operation simple and improving ease of use. The arc-shaped groove design on the front of the control block conforms to ergonomic principles, allowing the operator to hold and control the biopsy needle more comfortably during operation, reducing fatigue during the operation. Attached Figure Description

[0013] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 for Figure 1 A magnified structural diagram of point A in the middle.

[0016] Figure 3 for Figure 1 A magnified structural diagram at point B in the middle.

[0017] Figure 4 This is a schematic diagram of the internal structure of this utility model.

[0018] Figure 5 for Figure 4 A magnified structural diagram at point C.

[0019] 1. Handle shell; 2. Outer tube; 3. Needle tube; 4. Spindle; 5. Slide groove; 6. Slide plate; 7. Limiting groove; 8. Baffle; 9. Limiting plate; 10. Slide rail; 11. U-shaped block; 12. Control spring; 13. Control groove; 14. Control handle; 15. Screw; 16. Knob; 17. Scale; 18. Pointer; 19. Reinforcing rod; 20. Control rod; 21. Slide sleeve; 22. Control block; 23. Return spring; 24. Clamping tooth; 25. Clamping plate; 26. Arc-shaped groove. Detailed Implementation

[0020] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] like Figure 1-5 As shown, an adjustable endoscopic ultrasound aspiration biopsy needle includes a handle housing 1, an outer tube 2 fixed to the right side of the handle housing 1, a needle tube 3 slidably connected to the right end of the outer tube 2, and a spindle 4 slidably mounted on the inner side of the outer tube 2, which is driven by the needle tube 3. The handle housing 1 has two symmetrical sliding grooves 5 facing left and right, which are fixedly connected to the handle housing 1. A sliding plate 6 is slidably mounted on the upper side of the sliding groove 5, and the sliding plate 6 is driven by the spindle 4. A limiting groove 7 is formed on the upper side of the handle housing 1, and a sliding plate 6 is mounted on the right side of the limiting groove 7. The handle housing 1 has a left and right sliding baffle 8, an adjustment component for controlling the baffle 8 is installed on the upper side of the handle housing 1, a limiting piece 9 that matches the limiting groove 7 and the baffle 8 and is fixedly connected to the slide 6 is installed on the upper side of the slide 6, a slide rail 10 is installed on the lower side of the slide 6, a U-shaped block 11 is slidably installed on the upper side of the slide rail 10, and control springs 12 that are fixedly connected to the left and right ends of the U-shaped block 11 are installed on both sides of the slide 6. A left and right oriented control groove 13 is opened on the front side of the handle housing 1, and a control handle 14 that is drivenly connected to the U-shaped block 11 is installed inside the control groove 13.

[0022] In this invention, the length of the slide 10 is greater than the length of the groove 5. The outer tube 2 serves as the main support structure for the biopsy needle. The extension or retraction of the needle tube 3 is controlled by the movement of the spindle 4 to perform the biopsy operation. When in use, the operator holds the handle shell 1 and moves the control handle 14 back and forth to drive the U-shaped block 11 to move back and forth. The control springs 12 on both sides of the slide 6 can drive the slide 6 to move left and right when the U-shaped block 11 moves. At the same time, the limiting piece 9 is located inside the limiting groove 7 on the left side of the baffle 8. The adjustment component can control the position of the baffle 8 to limit the left and right contact of the limiting piece 9, so that the slide 6 moves within a specific range and achieves precise adjustment of the needle tube 3.

[0023] By limiting the range of motion of the limiting piece 9 within the limiting groove 7, the left and right distance of the slider 6 within the sliding groove 5 can be precisely controlled to achieve precise control of the extension length of the needle tube 3, thereby achieving precise adjustment of the biopsy depth. The design of controlling the movement of the slider 6 through the U-shaped block 11 and the control spring 12 allows the operator to blindly operate the control handle 14 left and right within the control groove 13 to control the needle tube 3 under different biopsy needle length requirements. This design simplifies the operation steps and improves the convenience of operation.

[0024] The adjustment assembly includes a screw 15, which is threadedly connected to the handle housing 1. Its left side is rotatably connected to the baffle 8, and a knob 16 is installed on the right side of the screw 15 and fixed concentrically thereto.

[0025] The position of the baffle 8 can be easily adjusted by the screw 15 and the knob 16, thereby changing the range of movement of the slider 6. This design allows the operator to adjust the extension length of the biopsy needle more flexibly and accurately, improving the accuracy of the operation and the stability of the baffle.

[0026] The front side of the limiting groove 7 is provided with a scale 17, and the front side of the baffle 8 is fixed with a pointer 18 that matches the scale 17.

[0027] A reinforcing rod 19, which matches the outer tube 2, is installed on the right side of the handle housing 1.

[0028] The combination of pointer 18 and scale 17 allows staff to observe the position of baffle 8 more clearly, thus making the extension and retraction length of syringe 3 more precise.

[0029] The reinforcement bar enhances the stability and overall strength of the outer tube 2, thereby improving the safety and durability of the biopsy needle operation.

[0030] The control handle 14 includes a control rod 20 fixed to the U-shaped block 11. A sliding sleeve 21 is slidably sleeved on the front side of the control rod 20. A control block 22 is fixed on the front side of the sliding sleeve 21. A return spring 23 is sleeved on the outside of the control rod. The front and rear ends of the return spring 23 are respectively connected to the sliding sleeve 21 and the U-shaped block 11. A number of left-right spaced locking teeth 24 are installed on the rear side of the control groove 13. A locking plate 25 matching the locking teeth 24 is fixed on the rear side of the sliding sleeve 21.

[0031] The reset spring 23 allows the sliding sleeve 21 and the control block 22 to automatically reset after the control block 22 is released. The cooperation between the locking teeth 24 and the locking plate 25 allows the U-shaped block 11 to be fixed when not in use, thereby improving the safety of biopsy needle operation. At the same time, when in use, the U-shaped block 11 can be controlled to slide left and right by simply pressing the control block 22 inward, which makes the biopsy needle operation simple and improves the convenience of use.

[0032] An arc-shaped groove 26 is provided on the front side of the control block 22.

[0033] The arc-shaped groove 26 on the front side of the control block 22 is designed in accordance with ergonomic principles, allowing the operator to hold and control the biopsy needle more comfortably during operation, reducing fatigue during the operation.

[0034] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. An adjustable endoscopic ultrasonic aspiration biopsy needle, comprising a handle housing, an outer tube fixed to the right side of the handle housing, a needle tube slidably connected to the right end of the outer tube, and a spindle slidably mounted on the inner side of the outer tube and drivenly connected to the needle tube, characterized in that: The handle shell is internally provided with left-right oriented sliding grooves, the number of the sliding grooves is two, the sliding grooves are symmetrically arranged front and back and fixedly connected with the handle shell, left-right slidingly mounted on the upper side of the sliding grooves are sliding plates, the sliding plates are in transmission connection with the mandrel, the upper side of the handle shell is provided with a limiting groove, the right side of the limiting groove is provided with a baffle in left-right sliding connection therewith, the upper side of the handle shell is provided with an adjusting assembly for controlling the baffle, the upper side of the sliding plate is provided with a limiting plate in matching with the limiting groove and the baffle and fixedly connected with the sliding plate, the lower side of the sliding plate is provided with a sliding channel, the upper side of the sliding channel is provided with a U-shaped block in left-right sliding connection therewith, the left and right sides of the sliding plate are both provided with control springs in fixed connection with the left and right ends of the U-shaped block, the front side of the handle shell is provided with a left-right oriented control groove, the inner side of the control groove is provided with a control handle in transmission connection with the U-shaped block.

2. The adjustable endoscopic ultrasound aspiration biopsy needle of claim 1, wherein: The adjusting assembly comprises a screw rod, the screw rod is in threaded connection with the handle shell, the left side of the screw rod is in rotational connection with the baffle, the right side of the screw rod is provided with a knob fixedly connected therewith.

3. The adjustable endoscopic ultrasound aspiration biopsy needle of claim 2, wherein: The front side of the limiting groove is provided with a scale, the front side of the baffle is fixedly provided with a pointer in matching with the scale.

4. The adjustable endoscopic ultrasound aspiration biopsy needle of claim 3, wherein: The right side of the handle shell is provided with a reinforcing rod in matching with the outer tube.

5. The adjustable endoscopic ultrasound aspiration biopsy needle of claim 4, wherein: The control handle comprises a control rod fixedly connected with the U-shaped block, the front side of the control rod is provided with a sliding sleeve in sleeved connection front and back, the front side of the sliding sleeve is fixedly provided with a control block, the outer side of the control rod is provided with a reset spring in sleeved connection, the front and back ends of the reset spring are in transmission connection with the sliding sleeve and the U-shaped block respectively, the rear side of the control groove is provided with a plurality of left-right spaced clamping teeth, the rear side of the sliding sleeve is fixedly provided with a clamping plate in matching with the clamping teeth.

6. The adjustable endoscopic ultrasound aspiration biopsy needle of claim 5, wherein: The front side of the control block is provided with an arc-shaped recess.

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