Ultrasonic endoscope and electric rotary puncture instrument thereof

Abstract

The present application relates to an electric rotary puncture instrument, comprising: a puncture outer rod; a catheter outer rod, which is telescopically mounted inside the puncture outer rod; a catheter, which passes through the catheter outer rod and is fixed; a handle housing, which is movably mounted on the puncture outer rod, and an electric rotation control device is fixedly mounted inside the handle housing; an inner needle, which passes through the catheter and is connected to the electric rotation control device, and the inner needle extends and retracts from the catheter as the handle housing moves, and is rotated by the electric rotation control device. In addition, the present invention also relates to an ultrasonic endoscope including the electric rotary puncture instrument. The rotary puncture of the present invention performs rotary cutting of tissues through the needle tip, and the puncture efficiency is higher. The electric power source used in the present invention can be set to a constant torque, and the power output is stable. Compared with manual rotary puncture, the puncture and rotation of the present invention are two forces, and there is no interference between them, which can reduce the risk of puncture caused by excessive force.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical instruments, and more specifically, relates to an electric rotary puncture instrument and an ultrasonic endoscope comprising the electric rotary puncture instrument. Background Art

[0002] Endoscopic ultrasound (EUS) is a digestive tract inspection technique that combines endoscopy and ultrasound. Its working principle is to place a miniature high-frequency ultrasound probe at the top of the endoscope. When the endoscope is inserted into the body cavity, the digestive tract mucosal lesions can be directly observed through the endoscope. In this way, real-time scanning is performed using ultrasound under the endoscope to obtain the hierarchical histological characteristics of the gastrointestinal tract and ultrasound images of the surrounding adjacent organs. At the same time, puncture instruments such as biopsy needles can be used to perform biopsy sampling at the lesion site under the guidance of the ultrasound endoscope. However, in common bile membrane puncture surgery, it is difficult to puncture the bile membrane using traditional puncture instruments.

[0003] Patent publication number CN117481698A discloses an ultrasonic endoscope and a rotary puncture instrument thereof, which includes a long rod, a shell mounted on the outside of the long rod, and a scale display cylinder arranged at the second end of the shell; an inner needle mounted on the first end of the shell is also arranged in the shell, and a guide screw is also arranged at the first end of the shell, and the inner needle passes through the guide screw. The puncture depth of the inner needle can be adjusted through the scale display cylinder. A fixed guide nut matched with the guide screw is also arranged in the shell, and the shell and the guide screw can move relative to the guide nut. When pushing in the puncture, the shell is pushed. At this time, the guide screw can drive the shell and the inner needle in the shell to rotate relative to the guide nut, that is, when the inner needle is pushed, on the one hand, it moves along the length direction of the long rod, and on the other hand, it performs a rotational motion. Although this patent can realize the movement and rotation of the inner needle to puncture the bile membrane, the whole process is performed manually, which is inefficient and there is a risk of puncture with excessive force.

[0004] Therefore, there is an urgent need to provide a puncture instrument that can improve the puncture efficiency and reduce the risk of puncture caused by excessive force. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention adopts an electric method to drive the puncture needle to rotate the needle head during the puncture process to cut tissue, thereby improving the efficiency of bile membrane puncture, and adopts an electric power source to reduce the doctor's physical exertion during the operation.

[0006] In order to solve the above technical problems or achieve the above objectives, the present invention adopts the following technical solutions:

[0007] According to one aspect of the present invention, there is provided an electric rotary puncture instrument, comprising:

[0008] puncture the outer rod;

[0009] a catheter outer rod, the catheter outer rod being telescopically mounted inside the puncture outer rod;

[0010] a catheter, which passes through the outer rod of the catheter and is fixed;

[0011] A handle housing, which is movably mounted on the puncture outer rod, and an electric rotation control device is fixedly mounted in the handle housing;

[0012] An inner needle passes through the catheter and is connected to an electric rotation control device, the inner needle is extended and retracted from the catheter as the handle housing moves, and is rotated by the electric rotation control device.

[0013] In one embodiment of the present invention, the electric rotary puncture instrument further comprises:

[0014] A catheter outer rod limit knob, which is arranged at the front end of the puncture outer rod;

[0015] The puncture outer rod limiting knob is located behind the catheter outer rod limiting knob, and the puncture outer rod limiting knob is arranged on a limiting ring sleeved on the puncture outer rod.

[0016] In one embodiment of the present invention, the electric rotary puncture instrument further comprises:

[0017] An end cap is mounted on the front end of the outer rod of the catheter.

[0018] In one embodiment of the present invention, the electric rotary puncture instrument further comprises:

[0019] The catheter seat is fixedly installed in the end cover and the catheter outer rod, and supports the catheter.

[0020] In one embodiment of the present invention, the electric rotary puncture instrument further comprises:

[0021] The inner rod of the catheter is connected to the rear end of the outer rod of the catheter, and the rear end of the inner rod of the catheter is connected to the puncture outer rod.

[0022] In one embodiment of the present invention, the catheter passes through the catheter outer rod and is fixedly connected to the catheter inner rod.

[0023] In one embodiment of the present invention, the electric rotary puncture instrument further comprises:

[0024] A Luer connector is fixed to the rear end of the handle housing and is connected to the distal end of the inner needle.

[0025] In one embodiment of the present invention, a sealing ring is provided at the connection between the Luer connector and the end of the inner needle.

[0026] In one embodiment of the present invention, the electric rotation control device comprises:

[0027] A motor, which is fixedly connected to the handle housing;

[0028] a control panel connected to the motor and controlling the speed and direction of the motor;

[0029] A reduction box connected to the motor;

[0030] An output shaft rotatably mounted on the reduction gearbox;

[0031] A flexible printed circuit board connected to the motor;

[0032] a battery connected to the flexible printed circuit board;

[0033] A membrane switch is connected to the flexible printed circuit board.

[0034] In one embodiment of the present invention, a button is provided on the handle housing, and the button is connected to the membrane switch.

[0035] In one embodiment of the present invention, the handle housing includes an upper handle shell and a lower handle shell, the upper handle shell is fixedly connected to the lower handle shell by a snap, and the button is arranged on the upper handle shell.

[0036] In one embodiment of the present invention, the rear end of the inner needle passes through the central hole of the output shaft and is connected to the output shaft.

[0037] In one embodiment of the present invention, the inner needle is connected to the output shaft by riveting or fixing with UV glue.

[0038] According to another aspect of the present invention, an ultrasonic endoscope is provided, comprising the electric rotary puncture instrument as described above.

[0039] The technical solution provided by the present invention has the following advantages compared with the prior art:

[0040] Compared with the transmission puncture method, the rotary puncture of the present invention rotates and cuts tissues through the needle tip, and the puncture efficiency is higher. Compared with manual rotary puncture, the power source of the electric method adopted by the present invention can be set to a constant torque, and the power output is stable. Compared with manual rotary puncture, puncture and rotation are two forces, and there is no interference between them, which can reduce the risk of puncture caused by excessive force. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0042] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the description of the embodiments or the prior art are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0043] Figure 1 A structural cross-sectional view of an electric rotary puncture instrument provided by one embodiment of the present invention is shown;

[0044] Figure 2 Shows Figure 1 A schematic diagram of the structure when the structure is subjected to rotational puncture;

[0045] Figure 3 Shows Figure 1 Schematic diagram of the three-dimensional structure;

[0046] Figure 4 Shows Figure 1 A three-dimensional structural schematic diagram of the present invention is shown in more detail in which a structural schematic diagram of the electric rotation control device used in an embodiment of the present invention is shown;

[0047] Figure 5 Shows Figure 1 Schematic diagram of the three-dimensional structure of the connection between the inner needle and the electric rotation control device.

[0048] Among them, 1. inner needle; 2. catheter; 3. end cap; 4. catheter outer rod; 5. puncture outer rod; 6. limit ring; 7. handle upper shell; 8. handle lower shell; 9. button; 10. Luer connector; 11. catheter outer rod limit knob; 12. puncture outer rod limit knob; 13. membrane switch; 14. flexible printed circuit board; 15. battery; 16. motor; 17. reduction gearbox; 18. output shaft; 19. catheter seat; 20. sealing ring; 21. catheter inner rod; 22. electric rotation control device; 23. handle shell. DETAILED DESCRIPTION

[0049] In order to more clearly understand the above-mentioned purposes, features and advantages of the present disclosure, the embodiments of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0050] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0051] like Figure 1-5As shown, an electric rotary puncture instrument provided in one embodiment of the present invention specifically includes the following components or structures: inner needle 1, catheter 2, end cap 3, catheter outer rod 4, puncture outer rod 5, limit ring 6, handle upper shell 7, handle lower shell 8, button 9, Luer connector 10, catheter outer rod limit knob 11, puncture outer rod limit knob 12, membrane switch 13, flexible printed circuit board (FPCB) 14, battery 15, motor 16 and its control panel, reduction box 17, output shaft 18, catheter seat 19, sealing ring 20 and catheter inner rod 21. The handle upper shell 7 and the handle lower shell 8 constitute the handle housing 23, the membrane switch 13, the flexible printed circuit board (FPCB) 14, the battery 15, the motor 16 and its control panel, the reduction box 17 and the output shaft 18 constitute the electric rotation control device 22, and the motor 16, the reduction box 17, and the output shaft 18 constitute the power unit.

[0052] In the structure of the above-mentioned embodiment of the present invention, again referring to Figure 1-4 As shown in the front-to-back direction, the catheter outer rod 4 can be telescopically installed in the puncture outer rod 5, and the catheter outer rod 4 can be extended and retracted from the front end of the puncture outer rod 5; the catheter 2 passes through the catheter outer rod 4 and is fixedly connected to the catheter inner rod 21 located in the puncture outer rod 5; the handle shell 23 is movably installed on the puncture outer rod 5, and an electric rotation control device 22 is fixedly installed in the handle shell 23; the inner needle 1 passes through the catheter 2 and extends until the rear end of the inner needle 1 is connected to the electric rotation control device 22, the inner needle 1 extends and retracts from the catheter 2 as the handle shell 23 moves back and forth, and the inner needle 1 is rotated by the electric rotation control device 22.

[0053] In the structure of the above-mentioned embodiment of the present invention, again referring to Figure 1-3 An end cap 3 is installed on the front end of the catheter outer rod 4, and a catheter seat 19 is installed inside the end cap 3 and the catheter outer rod 4. The catheter 2 passes through the catheter outer rod 4 and is fixed to the catheter inner rod 21. The catheter 2 is supported on the catheter seat 19.

[0054] In the structure of the above-mentioned embodiment of the present invention, again referring to Figure 1-3 The catheter outer rod limit knob 11 is arranged at the front end of the puncture outer rod 5. After the catheter 2 passes through the catheter outer rod 4, it is connected to the catheter inner rod 21. The catheter outer rod 4 moves forward to shorten the length of the protruding part of the catheter 2, and moves backward to increase the length of the protruding part of the catheter 2. When the catheter outer rod 4 moves to the desired position, the position of the catheter outer rod 4 can be limited by tightening the catheter outer rod limit knob 11.

[0055] In the structure of the above-mentioned embodiment of the present invention, again referring to Figure 1-3, the puncture outer rod limit knob 12 is located behind the catheter outer rod limit knob 11, and the puncture outer rod limit knob 12 is set on the limit ring 6 that is sleeved on the puncture outer rod 5. The limit ring 6 is sleeved on the puncture outer rod 5 and can move on the puncture outer rod 5, and the handle shell 23 can move on the puncture outer rod 5. When the required extension length of the inner needle 1 is determined, the position to which the handle shell 23 needs to be moved on the puncture outer rod 5 can be selected, and then the limit ring 6 is moved to this position, and the puncture outer rod limit knob 12 on the limit ring 6 is tightened to fix the limit ring 6 on the puncture outer rod 5, and then the handle shell 23 is moved to the limit ring 6 to obtain the required extension length of the inner needle 1. For example, Figure 2 As shown, when the handle housing 23 is located at the frontmost side and closest to the stop ring 6, the inner needle 1 is farthest from the front end surface of the catheter 2, that is, the inner needle 1 has the longest extension length. Figure 1 As shown, when the handle housing 23 is at the rearmost side and is farthest from the end surface of the puncture outer rod 5 , the inner needle 1 can be retracted into the catheter 2 .

[0056] In the structure of the above-mentioned embodiment of the present invention, again referring to Figure 1-2 The inner rod 21 of the catheter is connected to the rear end of the outer rod 4 of the catheter, and the rear end of the inner rod 21 of the catheter is connected to the puncture outer rod 5.

[0057] In the structure of the above-mentioned embodiment of the present invention, again referring to Figure 1-3 The Luer connector 10 is fixed to the rear end of the handle housing 23, and the Luer connector 10 is connected to the end of the inner needle 1. A sealing ring 20 is provided at the connection between the Luer connector 10 and the end of the inner needle 1. The function of the sealing ring 20 is to prevent the Luer connector 10 from rotating when the inner needle 1 rotates, so as not to affect the injection, and to maintain the sealing of the pipeline formed between the inner needle 1 and the Luer connector 10 when the inner needle 1 rotates.

[0058] In the structure of the above-mentioned embodiment of the present invention, again referring to Figure 4-5 The electric rotation control device 22 includes: a motor 16 and a control panel thereof, wherein the motor 16 is fixedly connected to the handle housing 23, the control panel is connected to the motor 16 and is used to control the speed and direction of the motor 16; a reduction box 17, wherein the reduction box 17 is connected to the motor 16; an output shaft 18, wherein the output shaft 18 is rotatably mounted on the reduction box 17; a flexible printed circuit board 14, wherein the flexible printed circuit board 14 is connected to the motor 16; a battery 15, wherein the battery 15 is connected to the flexible printed circuit board 14; and a membrane switch 13, wherein the membrane switch 13 is connected to the flexible printed circuit board 14.

[0059] In the structure of the above-mentioned embodiment of the present invention, again referring to Figure 3-5A button 9 is provided on the handle housing 23, and the button 9 is connected to the membrane switch 13. The handle housing 23 includes an upper handle shell 7 and a lower handle shell 8. The upper handle shell 7 and the lower handle shell 8 are fixedly connected by snapping, and the button 9 is provided on the upper handle shell 7. The rear end of the inner needle 1 passes through the central hole of the output shaft 18 and is connected to the output shaft 18. The inner needle 1 and the output shaft 18 can be connected by riveting or UV glue, so that the inner needle 1 can rotate together with the output shaft 18. The inner needle 1 is connected to the output shaft 18 and can rotate together. The motor 16 is fixed to the upper handle shell 7 and the lower handle shell 8. At this time, the inner needle 1 can move together with the movement of the upper handle shell 7 and the lower handle shell 8.

[0060] In the structure of the above-mentioned embodiment of the present invention, again referring to Figure 3-5 When the inner needle 1 needs to rotate, the button 9 is pressed to start the switch 13, the battery 15 supplies power, which is transmitted to the motor 16 through the flexible printed circuit board 14. The motor 16 works, and the speed and direction of the motor 16 are controlled by the control panel, and then the output shaft 18 drives the inner needle 1 to rotate after passing through the reduction box 17. When the inner needle 1 needs to stop rotating, the button 9 is pressed again, the switch 13 is released, and the entire rotation operation stops immediately.

[0061] The following is a detailed description of the use of the electric rotary puncture instrument of the present invention.

[0062] Refer again Figure 1 As shown, Figure 1 The electric rotary puncture instrument of the present invention is in a state of waiting for rotary puncture. Move the limit ring 6 to a suitable position, tighten the puncture outer rod limit knob 12 on the limit ring 6 to fix the limit ring 6 on the puncture outer rod 5, move the catheter outer rod 4 forward and backward to extend and shorten the length of the extended part of the catheter 2. When the catheter outer rod 4 moves to the desired position, tighten the catheter outer rod limit knob 11 to limit the position of the catheter outer rod 4. At this time, the handle housing 23 is located at the rearmost position, and the inner needle 1 is retracted into the catheter 2. Refer again Figure 2 , Figure 2 This is the state of the electric rotary puncture instrument of the present invention for rotary puncture. The handle housing 23 (handle upper housing 7 and handle lower housing 8) is moved forward to the position of the limit ring 6 by hand. At this time, the inner needle 1 extends from the catheter 2. When the inner needle 1 reaches the position where puncture is required, the button 9 on the handle upper housing 7 is pressed to start the motor 16 of the electric rotary control device 22. After the speed and direction of the motor 16 are controlled by the control panel, the motor 16 drives the reducer 17 and the output shaft 18 to rotate, and the output shaft 18 drives the inner needle 1 to rotate for puncture. After the rotary puncture is completed, the button 9 on the handle housing 7 is pressed again to turn off the electric rotary control device 22 to stop the inner needle 1 from rotating. The handle housing 23 is moved to the rear side by hand to retract the inner needle 1 into the catheter 2.

[0063] In addition, an embodiment of the present invention also relates to an ultrasonic endoscope, which includes the electric rotary puncture instrument described in the above embodiment.

[0064] It can be seen that the rotary puncture of the present invention is more efficient in cutting tissue by rotating the needle tip. Compared with manual rotary puncture, the electric power source used in the present invention can be set to a constant torque, and the power output is stable. Compared with manual rotary puncture, puncture and rotation are two forces, and there is no interference between them, which can reduce the risk of puncture caused by excessive force.

[0065] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusions, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to the process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including a..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0066] The above is only an embodiment of the present application, and the embodiment enables those skilled in the art to understand and implement the present application. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and features disclosed herein.

Claims

1. An electric rotary puncture instrument, characterized in that: include: puncture the outer rod; a catheter outer rod, the catheter outer rod being telescopically mounted inside the puncture outer rod; An end cap, the end cap being mounted on the front end of the outer rod of the conduit; An inner rod of the catheter, the inner rod of the catheter is connected to the rear end of the outer rod of the catheter, and the rear end of the inner rod of the catheter is connected to the puncture outer rod; A catheter, the catheter passes through the catheter outer rod and is fixedly connected to the catheter inner rod; A handle housing, wherein the handle housing is movably mounted on the puncture outer rod, and an electric rotation control device is fixedly mounted in the handle housing; an inner needle which passes through the catheter and is connected to the electric rotation control device, the inner needle extending and retracting from the catheter as the handle housing moves and being rotated by the electric rotation control device, The electric rotation control device comprises: A motor, wherein the motor is fixedly connected to the handle housing; a control panel connected to the motor and controlling the speed and direction of the motor; A reduction box connected to the motor; An output shaft, the output shaft being rotatably mounted on the reduction box; A flexible printed circuit board, wherein the flexible printed circuit board is connected to the motor; a battery connected to the flexible printed circuit board; A membrane switch connected to the flexible printed circuit board; A button is provided on the handle housing, and the button is connected to the membrane switch; The handle housing comprises an upper handle housing and a lower handle housing, the upper handle housing is fixedly connected with the lower handle housing by buckles, and the button is arranged on the upper handle housing; The rear end of the inner needle passes through the central hole of the output shaft and is connected to the output shaft. When the electric rotary puncture instrument performs rotary puncture, the handle shell is moved forward to the position of the limit ring by hand, and the inner needle is extended from the catheter. When the inner needle reaches the position where puncture is required, the button on the handle upper shell is pressed to start the motor of the electric rotary control device. After the speed and direction of the motor are controlled by the control panel, the motor drives the reduction box and the output shaft to rotate, and the output shaft drives the inner needle to rotate for puncture, and The power source of the electric method is set to a constant torque, and puncture and rotation are two forces without interference with each other.

2. The electric rotary puncture instrument according to claim 1, characterized in that: Also includes: A catheter outer rod limit knob, wherein the catheter outer rod limit knob is arranged at the front end of the puncture outer rod; The puncture outer rod limiting knob is located behind the catheter outer rod limiting knob, and the puncture outer rod limiting knob is arranged on a limiting ring sleeved on the puncture outer rod.

3. The electric rotary puncture instrument according to claim 1, characterized in that: Also includes: The catheter seat is fixedly installed in the end cover and the catheter outer rod, and supports the catheter.

4. The electric rotary puncture instrument according to claim 1, characterized in that: Also includes: A Luer connector is fixed to the rear end of the handle housing and is connected to the distal end of the inner needle.

5. The electric rotary puncture instrument according to claim 4, characterized in that: A sealing ring is provided at the connection between the Luer connector and the end of the inner needle.

6. The electric rotary puncture instrument according to claim 1, characterized in that: The inner needle is connected to the output shaft by riveting or fixing with UV glue.

7. An ultrasonic endoscope, characterized in that: The invention comprises the electric rotary puncture instrument as claimed in any one of claims 1 to 6.

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