Laparoscopic needle bile duct incision

Abstract

The present invention discloses a laparoscopic needle-shaped bile duct cutter, which belongs to the field of medical instruments and comprises a handle, wherein a groove one is provided at the upper end of the handle near the middle position, a slide groove is provided at the upper end surface of the groove one near the middle position, a handle is movably provided inside the slide groove, a limiting mechanism is provided at the bottom end of the groove one near one side of the handle, a connecting ring is provided at the upper end of the handle, a rubber plug is provided between the inner side walls of the connecting ring near the top position, an adjusting mechanism is provided at one end of the handle, a terminal is provided at the right side of the handle near the middle position, a groove two is provided inside the handle and below the slide groove, and a wire is provided inside the groove two; the present invention can perform common bile duct puncture before laparoscopic common bile duct incision, extract bile to confirm the bile duct, and then perform common bile duct incision with a needle in an electric cutting mode to minimize bile duct damage.

Description

Technical Field

[0001] The invention relates to the field of medical instruments, in particular to a laparoscopic needle-shaped bile duct cutter. Background Art

[0002] Laparoscopic common bile duct exploratory surgery is already very mature. During the operation, the common bile duct needs to be explored and found, and then the anterior wall of the common bile duct is cut. Because suture reconstruction is required later, physical and thermal damage to the bile duct wall tissue is required to be minimized. The traditional treatment method: in the past, during open surgery, after finding the common bile duct and traction with sutures, it is first confirmed by puncture with a fine needle, and then cut with a pointed knife, which basically does not cause excessive damage to the bile duct wall. At present, during laparoscopic surgery, after the posterior common bile duct is dissected and exposed, there is a lack of effective puncture confirmation methods, especially for patients with repeated inflammation and adhesions. For patients, it is difficult to judge whether it is the bile duct; and laparoscopy usually uses electric hooks or electric needles, and the electric cutting mode is used to perform common bile duct incision, but the contact area is relatively large, and the incision is made from the surface to the deep, and there is a deviation in the direction, which may lead to cutting into the bile duct wall, or cutting too deep, resulting in electric burns to the posterior wall of the bile duct. There is a laparoscopic bile duct incision knife, which extends a pointed blade after entering the abdominal cavity to physically cut the bile duct wall, but because of the lack of suture traction suspension during laparotomy, it is difficult for the pointed blade to cut the bile duct wall, and excessive force can easily damage the posterior wall of the common bile duct.

[0003] After searching, Chinese Patent No. CN202110035045.2 discloses a laparoscopic bile duct puncture diagnostic electrocoagulation cutter, which lacks an effective puncture confirmation method and can easily damage the posterior wall of the common bile duct during use. For this reason, we propose a laparoscopic needle bile duct cutter. Summary of the invention

[0004] The purpose of the present invention is to solve the defects in the prior art and to propose a laparoscopic needle bile duct cutter.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A laparoscopic needle bile duct cutter comprises a handle, a groove 1 is provided at the upper end of the handle near the middle position, a slide groove is provided at the upper end surface of the groove 1 near the middle position, a handle is movably arranged inside the slide groove, a limiting mechanism is provided at the bottom end of the groove 1 near one side of the handle, a connecting ring is provided at the upper end of the handle, a rubber plug is provided between the inner side walls of the connecting ring near the top position, and an adjustment mechanism is provided at one end of the handle.

[0007] Furthermore, a terminal is provided near the middle position on the right side of the handle, a groove 2 is opened inside the handle and below the slide slot, a wire is arranged inside the groove 2, and a terminal head is connected to the end of the wire away from the terminal, a shell is provided on the left side of the handle, a blade is provided on the side of the shell away from the handle, an inner sleeve is provided inside the shell, the distance between the left inner wall of the groove 1 and the left outer wall of the handle is 20 mm, a cavity is opened through the handle, and a spring is provided between the handle and the inner wall of the slide slot.

[0008] Furthermore, the limiting mechanism includes a bracket 1, a limiting plate is arranged between the inner side walls of the bracket 1, a magnetic plate 1 is arranged at the bottom end of the limiting plate, a bracket 2 is arranged at the bottom end of the inner part of the groove 1 near one side of the slide groove, and a magnetic plate 2 matching with the magnetic plate 1 is arranged at the bottom end of the inner part of the bracket 2.

[0009] Furthermore, a rotating shaft is arranged between the two side walls of the limiting plate and the inner wall of the bracket, one end of the limiting plate is movably arranged between the two inner walls of the bracket through the rotating shaft to cooperate with the bracket, and the limiting plate and the inner wall of the groove are arranged parallel to each other.

[0010] Furthermore, the adjustment mechanism includes a needle body, a rubber tube is provided at one end of the needle body away from the handle, a spring tube is wrapped around the surface of the rubber tube, a needle is provided at one end of the rubber tube away from the needle body, and a groove is provided at one end of the needle head away from the rubber tube.

[0011] Furthermore, one end of the spring tube is fixedly connected to the needle body, and the other end is fixedly connected to the needle head. The needle body and the needle head are both hollow metal tubes. The needle head is 5 mm long, the diameter range of the needle body is 0.5-0.8 mm, the length of the rubber tube is 10 mm, the needle body is in contact with the inner sleeve, the inner sleeve is made of a metal tube, and one side of the inner sleeve is movably arranged with a wire and a terminal through a terminal head.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. Move the handle to the left along the slide groove to move the needle 5mm to the left from the blade head, then pierce the common bile duct, extract bile through the syringe to confirm the bile duct, then remove the syringe and energize the cutting knife through the terminal. The terminal energizes the inner sleeve through the wire arranged inside the second groove and the terminal head, wherein the needle body is in contact with the inner sleeve, so that the needle is energized and a cutting groove is opened at one end. The user moves the handle to the left to move the needle body to the left along the inner sleeve, so that the spring tube is gradually moved out of the shell. The rubber tube can be bent by the spring tube, thereby changing the angle between the needle and the needle body, which is convenient for cutting the common bile duct.

[0014] In summary, the device can solve the existing problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0016] Figure 1 This is a schematic diagram of the overall structure of the laparoscopic needle-shaped bile duct cutter proposed by the present invention;

[0017] Figure 2 This is an overall structural diagram of the handle of the laparoscopic needle bile duct cutter proposed by the present invention;

[0018] Figure 3 This is a schematic structural diagram of the limiting mechanism of the laparoscopic needle bile duct cutter proposed by the present invention;

[0019] Figure 4 It is an overall cross-sectional view of the laparoscopic needle-shaped bile duct cutter proposed by the present invention;

[0020] Figure 5 A cross-sectional view of the handle of the laparoscopic needle bile duct cutter provided by the present invention;

[0021] Figure 6 The present invention is a cross-sectional view of the blade head of the laparoscopic needle bile duct cutter.

[0022] In the figure: 1. handle; 2. groove 1; 3. slide groove; 4. bracket 1; 5. limit plate; 6. magnetic plate 1; 7. bracket 2; 8. magnetic plate 2; 9. handle; 10. connecting ring; 11. rubber plug; 12. terminal; 13. groove 2; 14. wire; 15. terminal head; 16. outer shell; 17. blade head; 18. inner sleeve; 19. needle body; 20. rubber tube; 21. spring tube; 22. needle head; 23. cutting groove; 24. adjustment mechanism; 25. limit mechanism. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] Example 1

[0025] See also Figure 1-3The present invention provides a technical solution: a laparoscopic needle bile duct cutter, comprising a handle 1, a groove 2 is provided at the upper end of the handle 1 near the middle position, a slide groove 3 is provided on the upper end surface of the groove 2 near the middle position, a handle 9 is movably arranged inside the slide groove 3, a limiting mechanism 25 is arranged at the bottom end of the groove 2 near one side of the handle 9, a connecting ring 10 is arranged at the upper end of the handle 9, a rubber plug 11 is arranged between the inner side walls of the connecting ring 10 near the top position, and an adjustment mechanism 24 is arranged at one end of the handle 9.

[0026] A terminal 12 is provided near the middle position on the right side of the handle 1, a groove 2 13 is provided inside the handle 1 and below the slide slot 3, a wire 14 is provided inside the groove 2 13, and a terminal head 15 is connected to the end of the wire 14 away from the terminal 12, a shell 16 is provided on the left side of the handle 1, a blade 17 is provided on the side of the shell 16 away from the handle 1, an inner sleeve 18 is provided inside the shell 16, the distance between the left inner wall of the groove 2 and the left outer wall of the handle 9 is 20 mm, a cavity is provided inside the handle 9, and a spring is provided between the handle 9 and the inner wall of the slide slot 3.

[0027] The limiting mechanism 25 includes a bracket 4, a limiting plate 5 is arranged between the inner side walls of the bracket 4, a magnetic piece 6 is arranged at the bottom end of the limiting plate 5, a bracket 2 7 is arranged at a position close to the side of the slide groove 3 at the bottom end of the inner part of the groove 2, a magnetic piece 2 8 matching with the magnetic piece 6 is arranged at the bottom end of the inner part of the bracket 2 7, a rotating shaft is arranged between the two side walls of the limiting plate 5 and the inner side wall of the bracket 4, one end of the limiting plate 5 is movably arranged between the inner side walls of the bracket 2 7 through the rotating shaft to cooperate with the bracket 4, and the limiting plate 5 and the inner side wall of the groove 2 are arranged parallel to each other.

[0028] Before performing common bile duct puncture to extract bile to confirm the bile duct, hold the handle 1 and move the handle 9 to the left along the slide groove 3, so that it moves 5 mm to the left. At this time, the spring is compressed, and then the bracket 4 set inside the groove 2 cooperates with the rotating shaft to rotate the limit plate 5 to move one end of it to the inside of the bracket 2 7. The limit plate 5 can be well set between the inner walls of the bracket 2 7 through the magnetic piece 6 and the magnetic piece 2 8. At this time, the right side of the handle 9 is close to the left side of the limit plate 5, and the elastic force of the spring to the right can well limit the handle 9 to prevent it from sliding during use. Then, one end of the syringe is moved into the cavity inside the handle 9 through the rubber stopper 11 set between the inner walls of the connecting ring 10.

[0029] Example 2

[0030] See also Figure 4-6The present invention provides a technical solution: a laparoscopic needle bile duct cutter, comprising a handle 1, a groove 2 is provided at the upper end of the handle 1 near the middle position, a slide groove 3 is provided on the upper end surface of the groove 2 near the middle position, a handle 9 is movably arranged inside the slide groove 3, a limiting mechanism 25 is arranged at the bottom end of the groove 2 near one side of the handle 9, a connecting ring 10 is arranged at the upper end of the handle 9, a rubber plug 11 is arranged between the inner side walls of the connecting ring 10 near the top position, and an adjustment mechanism 24 is arranged at one end of the handle 9.

[0031] The adjustment mechanism 24 includes a needle body 19, a rubber tube 20 is provided at one end of the needle body 19 away from the handle 9, a spring tube 21 is wound around the surface of the rubber tube 20, a needle head 22 is provided at one end of the rubber tube 20 away from the needle body 19, and a groove 23 is provided at one end of the needle head 22 away from the rubber tube 20.

[0032] One end of the spring tube 21 is fixedly connected to the needle body 19, and the other end is fixedly connected to the needle head 22. The needle body 19 and the needle head 22 are both hollow metal tubes. The length of the needle head 22 is 5 mm, the diameter range of the needle body 19 is 0.5-0.8 mm, the length of the rubber tube 20 is 10 mm, the needle body 19 is in contact with the inner sleeve 18, and the inner sleeve 18 is made of a metal tube. One side of the inner sleeve 18 is movably arranged through the terminal head 15 to cooperate with the wire 14 and the terminal 12.

[0033] During laparoscopic common bile duct incision surgery, as the handle 9 moves to the left, the needle 22 moves 5 mm to the left from the blade 17, then pierces the common bile duct, and bile is extracted through the syringe to confirm the bile duct. Then the syringe is removed and the incision knife is energized through the terminal 12. The terminal 12 energizes the inner sleeve 18 through the wire 14 set inside the groove 13 and the terminal 15, wherein the needle body 19 is in contact and connected with the inner sleeve 18, so that the needle 22 is energized and a groove 23 is opened at one end thereof for easy cutting. The user moves the handle 9 to the left to move the needle body 19 along the inner sleeve 18 to the left, so that the spring tube 21 gradually moves out of the shell 16, and the rubber tube 20 can be bent by the spring tube 21, thereby changing the angle between the needle 22 and the needle body 19 for easy use, and finally the common bile duct is cut.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A laparoscopic needle bile duct cutter, comprising a handle (1), characterized in that: A groove (2) is provided at the upper end of the handle (1) near the middle position, a slide groove (3) is provided at the upper end surface of the groove (2) near the middle position, a handle (9) is movably arranged inside the slide groove (3), a limit mechanism (25) is provided at the bottom end of the groove (2) near one side of the handle (9), a connecting ring (10) is provided at the upper end of the handle (9), a rubber plug (11) is provided between the inner side walls of the connecting ring (10) near the top position, and an adjustment mechanism (24) is provided at one end of the handle (9); A terminal (12) is provided near the middle position on the right side of the handle (1), a groove 2 (13) is provided inside the handle (1) and below the slide groove (3), a wire (14) is provided inside the groove 2 (13), and a terminal head (15) is connected to the end of the wire (14) away from the terminal (12), a shell (16) is provided on the left side of the handle (1), a blade head (17) is provided on the side of the shell (16) away from the handle (1), an inner sleeve (18) is provided inside the shell (16), the distance between the left inner wall of the groove 1 (2) and the left outer wall of the handle (9) is 20 mm, a cavity is provided inside the handle (9), and a spring is provided between the handle (9) and the inner wall of the slide groove (3); The limiting mechanism (25) comprises a bracket one (4), a limiting plate (5) is arranged between the inner side walls of the bracket one (4), a magnetic piece one (6) is arranged at the bottom end of the limiting plate (5), a bracket two (7) is arranged at a position close to one side of the slide groove (3) at the inner bottom end of the groove one (2), and a magnetic piece two (8) that fits with the magnetic piece one (6) is arranged at the inner bottom end of the bracket two (7).

2. The laparoscopic needle bile duct cutter according to claim 1, characterized in that: A rotating shaft is arranged between the two side walls of the limit plate (5) and the inner side wall of the bracket one (4); one end of the limit plate (5) is movably arranged between the inner side wall of the bracket two (7) through the rotating shaft in cooperation with the bracket one (4); the limit plate (5) and the inner side wall of the groove one (2) are arranged parallel to each other.

3. The laparoscopic needle bile duct cutter according to claim 1, characterized in that: The adjustment mechanism (24) comprises a needle body (19), a rubber tube (20) being arranged at one end of the needle body (19) away from the handle (9), a spring tube (21) being wound around the surface of the rubber tube (20), a needle head (22) being arranged at one end of the rubber tube (20) away from the needle body (19), and a groove (23) being arranged at one end of the needle head (22) away from the rubber tube (20).

4. The laparoscopic needle bile duct cutter according to claim 3, characterized in that: One end of the spring tube (21) is fixedly connected to the needle body (19), and the other end is fixedly connected to the needle head (22). The needle body (19) and the needle head (22) are both hollow metal tubes. The needle head (22) is 5 mm long. The diameter of the needle body (19) is in the range of 0.5 to 0.8 mm. The length of the rubber tube (20) is 10 mm. The needle body (19) is in contact with the inner sleeve (18). The inner sleeve (18) is made of a metal tube. One side of the inner sleeve (18) is movably arranged to cooperate with the wire (14) and the terminal (12) through the terminal head (15).

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