A common bile duct cutter hook device used under laparoscopy

Abstract

The present invention discloses a common bile duct incision hook device used under laparoscopy, comprising a forceps body, wherein the forceps body comprises a left-handed coil rod body and a right-handed coil rod body, wherein the tail end of the left-handed coil rod body is provided with a guide tube, and the tail end of the right-handed coil rod body is provided with a dovetail hook portion. The common bile duct incision hook device used under laparoscopy provided by the invention has a hook needle design that is improved over the traditional surgical suture needle. During the surgical operation, the hook needle is longitudinally inserted into the position where the common bile duct is to be incised, and is passed out at another point, and then the incision site of the common bile duct is gently lifted up, and the common bile duct is incised using the electric incision mode of the hook needle device. This incision causes less bleeding than the traditional blade / scissors incision, and the incision position is more precise and easy to control; compared with the traditional electric hook incision, the cutting speed is faster, the cutting edge is neater, and the incision direction is from the inside to the outside, avoiding the intraoperative iatrogenic damage to the contralateral bile duct that may be caused by the traditional electric hook incision from the outside to the inside.

Description

Technical Field

[0001] The invention relates to the technical field of medical device production, in particular to a common bile duct cutting hook device used under laparoscopy. Background Art

[0002] Laparoscopic common bile duct incision and exploration is a common surgical procedure, which is widely performed in hospitals at all levels. Due to the particularity of the common bile duct anatomy and physiology (relatively hidden location; many anatomical variations; different diameters of the common bile duct in different patients and disease states; easy accidental injury and poor healing during surgery), laparoscopic common bile duct incision has certain risks and technical difficulties.

[0003] Currently, the common methods of laparoscopic common bile duct incision are:

[0004] 1. Cut open with laparoscopic separation scissors;

[0005] 2. Cut with a surgical blade with an extended handle;

[0006] 3. For common bile ducts with a larger diameter, the existing ordinary electrocoagulation hook can be used for longitudinal incision.

[0007] The main drawbacks of the above methods are:

[0008] 1. Mechanical incision using scissors or blades can easily lead to bleeding during and after the common bile duct operation, and the incision position is not precise and sometimes difficult to control;

[0009] 2. The existing common electrocoagulation hook has a thicker diameter and a higher power when powered on. The electrical energy is converted into more heat energy, which may cause thermal damage to the common bile duct.

[0010] 3. The existing incision methods are all from the outside to the inside. If the incision depth is not properly controlled, it may sometimes injure the contralateral common bile duct wall, causing iatrogenic injury and serious complications such as postoperative bile fistula;

[0011] 4. For beginners or when the operation is difficult, the pre-cut part of the common bile duct cannot be accurately incised and the incision speed is slow.

[0012] The information and data obtained by repeatedly performing clinical operations using a variety of existing surgical instruments instead of the device of this design prove that a hook needle is used to longitudinally pierce the common bile duct from one point at the predetermined bile duct incision site and expose the needle tip at another point (the needle body remains in the common bile duct tissue), and the hook needle is gently lifted to ensure that the needle body does not touch the opposite bile duct tissue, and then power is turned on to cut from the inside to the outside. This treatment method can greatly avoid the above-mentioned disadvantages and make the operation safe and quick. However, there are currently no corresponding integrated and specialized tools and equipment in clinical practice. Summary of the invention

[0013] In view of the above problems existing in the prior art, one aspect of the present invention is to provide a common bile duct incision hook device for use under laparoscopy, which is used to make the common bile duct incision safer and faster and the incision site more precise.

[0014] Technical Solution

[0015] In order to achieve the above-mentioned purpose, the present invention provides a common bile duct cutting hook device for use under laparoscope, comprising a clamp body, wherein the clamp body comprises a left-handed coil rod body and a right-handed coil rod body, wherein the tail end of the left-handed coil rod body is provided with a guide tube, and the tail end of the right-handed coil rod body is provided with a dovetail hook portion, and further comprising a long rod plugged into the tail end of the guide tube, wherein the tail end of the long rod is provided with a hook needle, and a driving component is provided inside the long rod, wherein:

[0016] The dovetail hook moves relative to the guide tube, driving the driving assembly to keep the hook needle rotating between 0°-180°.

[0017] Preferably, a locking mechanism is provided on the outer wall of one side of the left hand ring rod body, and the locking mechanism is configured to make the angle between the dovetail hook and the guide tube adjustable.

[0018] Preferably, the common bile duct cutting hook device used under laparoscopy also includes a rotating seat assembly axially rotatably mounted on the tail end of the long rod, and the hook needle is movably assembled on the tail end of the long rod through the rotating seat assembly, and the rotating seat assembly is configured to be driven by the driving assembly to keep the hook needle rotating.

[0019] Preferably, a fixing cap is threadedly connected to the tail end of the guide tube, and the fixing cap is assembled to fix the long rod on the guide tube.

[0020] Preferably, the driving assembly includes a threaded rod with a thread on one end and a connecting rod, the non-threaded end of the threaded rod is installed on the connecting rod, a transmission rod is axially rotatedly connected in the long rod, the threaded end of the threaded rod is threadedly connected to the transmission rod, and a circular gear is installed on the other end of the transmission rod, and the circular gear is assembled to drive the rotating seat assembly to maintain circular motion in any direction.

[0021] Preferably, a tension spring is provided on the outer wall of one end of the connecting rod located inside the guide tube, and the tension spring is configured to drive the connecting rod to rest on the bottom of the inner side of the guide tube. The end of the connecting rod located outside the guide tube is fixed to the dovetail hook through a fixing plate.

[0022] Preferably, the rotating seat assembly includes a rotating disk for fixing the crochet hook, a driven gear disk installed on one end of the rotating disk, and a special-shaped gear disk installed on the tail end of the long rod, the special-shaped gear disk is meshed with the driven gear disk, and the circular gear is meshed with the tooth mouth of one end face of the special-shaped gear disk.

[0023] Preferably, the locking mechanism includes a hook handle, a pull rod and a locking fork, a ratchet ring is provided on one end of the shaft of the left-hand circle rod body and the right-hand circle rod body, the locking fork is horizontally mounted on the outer wall of the left-hand circle rod body, and a pin block inserted into any tooth mouth is provided at one end facing the ratchet ring, the tail end of the hook handle is axially rotatably mounted on the outer wall of the left-hand circle rod body, and the pull rod is assembled to keep the locking fork driven by the hook handle to maintain horizontal movement.

[0024] Preferably, a guide rail is installed on the outer wall of the left-hand ring rod body, and the locking fork is slidably installed in the track of the guide rail. An elastic member is provided in the guide rail, and the elastic member is assembled to drive one end of the locking fork with a ratchet ring to be inserted into the ring groove and to make the ratchet ring inserted into any of the tooth openings.

[0025] Preferably, an electric wire is arranged inside the long rod, one end of the electric wire is connected to the hook hook, and the other end of the electric wire extends out of the interior of the guide tube.

[0026] Beneficial Effects

[0027] Compared with the prior art, the present invention provides a common bile duct incision hook device for use under laparoscopy, which has the following beneficial effects: an arc-shaped hook needle is installed on the hook needle part, and the arc-shaped hook needle is consistent with the specifications of a traditional suture needle. In clinical operation, the hook needle is used to longitudinally pierce the common bile duct from one point at the predetermined bile duct incision site and expose the needle tip at another point (the needle body is still retained in the common bile duct tissue), and the hook needle is gently lifted to ensure that the needle body does not contact the opposite bile duct tissue. Then, power is turned on to cut from the inside to the outside. The surgical method performed using this device can make the common bile duct incision safe and fast, the incision site is more precise, and bleeding is reduced.

[0028] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0029] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the structure of the crochet hook of the present invention in a 180° state;

[0031] Figure 2This is a schematic diagram of the structure of the crochet hook of the present invention in a 90° state;

[0032] Figure 3 This is a schematic diagram of the structure of the crochet hook of the present invention in a 60° state;

[0033] Figure 4 It is a schematic diagram of the locking mechanism structure of the present invention;

[0034] Figure 5 This is a schematic diagram of the assembly relationship between the guide rail and the locking fork of the present invention;

[0035] Figure 6 This is a schematic diagram of the structure of the hook handle of the present invention;

[0036] Figure 7 It is a schematic diagram of the ratchet ring structure of the present invention;

[0037] Figure 8 This is a schematic diagram of the assembly relationship between the lock fork and the ratchet ring of the present invention;

[0038] Fig. 9 It is a schematic diagram of the structure of the crochet fixation of the present invention;

[0039] Fig.10 It is a structural schematic diagram of the assembly relationship between the drive assembly and the caliper body of the present invention.

[0040] Main reference numerals:

[0041] 1. Clamp body; 11. Left-hand circle rod body; 12. Right-hand circle rod body; 13. Guide tube; 14. Dovetail hook; 2. Long rod; 3. Hook needle; 4. Drive assembly; 41. Threaded rod; 42. Connecting rod; 43. Transmission rod; 431. Circular gear; 44. Tension spring; 5. Locking mechanism; 51. Hook handle; 52. Pull rod; 53. Lock fork; 531. Pin block; 54. Ratchet ring; 6. Rotating seat assembly; 61. Rotating disk; 62. Driven gear disk; 63. Special-shaped gear disk; 7. Fixing cap; 90. Guide rail; 91. Elastic member. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0043] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. "Include" or "comprise" and other similar words used in the present disclosure mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0044] In order to keep the following description of the embodiments of the present disclosure clear and concise, the present disclosure omits detailed descriptions of well-known functions and well-known components.

[0045] See also Figure 1-10 A common bile duct cutting hook device used under laparoscopy includes a clamp body 1, which includes a left-hand loop rod body 11 and a right-hand loop rod body 12. The tail end of the left-hand loop rod body 11 is provided with a guide tube 13, and the tail end of the right-hand loop rod body 12 is provided with a dovetail hook portion 14. It also includes a long rod 2 plugged into the tail end of the guide tube 13, and the tail end of the long rod 2 is movable with a hook needle 3. A driving component 4 is arranged in the long rod 2, wherein,

[0046] The dovetail hook 14 moves relative to the guide tube 13, driving the drive assembly 4 to keep the hook 3 rotating between 0° and 180°. Figure 1 The state shown is finally rotated to a state of being in contact with the long rod 2.

[0047] In the specific implementation process, Figure 1 As shown, when the user's fingers control the left hand circle rod body 11 and the right hand circle rod body 12 to open and close, the driving assembly 4 is driven to move upward in the vertical direction, so that the hook needle 3 rotates along the axis perpendicular to the long rod 2 with the opening and closing action. Figure 1 , Figure 2 and Figure 3 It is knowable.

[0048] like Figure 1 , Figure 2 as well as Figure 3 As shown, in a technical solution further proposed by the present invention, a locking mechanism 5 is provided on the outer wall of one side of the left hand circle rod body 11, and the locking mechanism 5 is assembled to make the angle between the dovetail hook portion 14 and the guide tube 13 adjustable.

[0049] Further integration Fig.10As shown, it can be seen that in some embodiments, the driving assembly 4 includes a threaded rod 41 with a thread at one end and a connecting rod 42, the threaded end of the threaded rod 41 is mounted on the connecting rod 42, and a transmission rod 43 is axially rotatably connected in the long rod 2, the threaded end of the threaded rod 41 is threadedly connected to the transmission rod 43, and the other end of the transmission rod 43 is installed with a circular gear 431, which is assembled to drive the rotating seat assembly 6 to maintain circular motion in any direction. By opening and closing the left-hand circle rod body 11 and the right-hand circle rod body 12, the transmission rod 43 is driven to maintain clockwise or counterclockwise rotation, so that the rotating seat assembly 6 can be driven to swing clockwise and counterclockwise.

[0050] It should be noted that according to Fig.10 It can be seen that a tension spring 44 is provided on the outer wall of one end of the connecting rod 42 located inside the guide tube 13. The tension spring 44 is assembled to drive the connecting rod 42 to rest on the bottom of the inner side of the guide tube 13. The end of the connecting rod 42 located outside the guide tube 13 is fixed to the dovetail hook 14 through a fixing plate.

[0051] Furthermore, according to Fig. 9 It can be seen that in the invention scheme, a rotating seat assembly 6 is also designed, which is axially rotatably installed on the tail end of the long rod 2. The crochet hook 3 is movably assembled on the tail end of the long rod 2 through the rotating seat assembly 6, and the rotating seat assembly 6 is assembled to be driven by the driving assembly 4 to keep the crochet hook 3 rotating.

[0052] Further, according to Fig. 9 It can be seen that the rotating seat assembly 6 includes a rotating disk 61 for fixing the crochet hook 3, a driven gear disk 62 installed at one end of the rotating disk 61, and a special-shaped gear disk 63 installed on the tail end of the long rod 2. The special-shaped gear disk 63 is meshed with the driven gear disk 62, and the circular gear 431 is meshed with the tooth mouth of one end face of the special-shaped gear disk 63.

[0053] In the specific implementation process, the user hooks the hook handle 51 close to the outer wall of the left-hand circle rod body 11, and drives the locking fork 53 out of the ring groove through the pull rod 52, that is, the pin block 531 is out of the tooth mouth. At this time, the operator controls the left-hand circle rod body 11 and the right-hand circle rod body 12 to open and close, that is, the angle between the dovetail hook portion 14 and the guide tube 13 increases, driving the connecting rod 42 to move upward. At this time, the tension spring 44 is stretched and deformed, and the threaded rod 41 moves up synchronously with the connecting rod 42. Under the action of the thread, the transmission rod 43 is driven to keep rotating clockwise, and the special-shaped toothed disc 63 is driven to rotate through the circular gear 431, and the special-shaped toothed disc 63 drives the driven toothed disc 62 to rotate, thereby finally rotating the rotating disc 61, that is, the hook needle 3 rotates, and the rotation of the rotating disc 61 is finally achieved. Figure 1 Status switch to Figure 2 state.

[0054] like Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 In the technical solution further proposed by the present invention, a tension spring 44 is provided on the outer wall of one end of the connecting rod 42 located inside the guide tube 13, and the tension spring 44 is assembled to drive the connecting rod 42 to rest on the bottom of the inner side of the guide tube 13, and the end of the connecting rod 42 located outside the guide tube 13 is fixed to the dovetail hook 14 through a fixing plate.

[0055] Furthermore, see Figure 4 and Figure 8 As shown, the locking mechanism 5 includes a hook handle portion 51, a pull rod 52 and a locking fork 53. A ratchet ring 54 is provided on one end of the shaft of the left-hand circle rod body 11 and the right-hand circle rod body 12. The locking fork 53 is horizontally installed on the outer wall of the left-hand circle rod body 11, and a pin block 531 inserted into any tooth opening is provided on the end facing the ratchet ring 54. The tail end of the hook handle portion 51 is axially rotatably installed on the outer wall of the left-hand circle rod body 11, and the pull rod 52 is assembled to enable the locking fork 53 to be driven by the hook handle portion 51 to maintain horizontal movement.

[0056] At the same time, if Figure 5 As shown, a guide rail 90 is installed on the outer wall of the left hand ring rod body 11, and the locking fork 53 is slidably installed in the track of the guide rail 90. An elastic member 91 is provided in the guide rail 90. The elastic member 91 is assembled to drive one end of the locking fork 53 with the ratchet ring 54 to be inserted into the ring groove and to make the ratchet ring 54 inserted into any tooth opening.

[0057] In the specific implementation process, Figure 1 As shown, the user hooks the hook handle 51 close to the outer wall of the left-hand circle rod body 11, and drives the locking fork 53 to disengage from the ring groove through the pull rod 52, that is, the pin block 531 disengages from the tooth mouth. At this time, the operator controls the opening and closing of the left-hand circle rod body 11 and the right-hand circle rod body 12, that is, the angle between the dovetail hook portion 14 and the guide tube 13 increases, driving the driving component 4 to move upward, and under the action of the driving component 4, the hook needle 3 is flipped, and then the hook handle 51 is released, the locking fork 53 will be inserted into the ring groove, and as the angle between the dovetail hook portion 14 and the guide tube 13 continues to increase, the ratchet ring 54 will continue to rotate accordingly, and finally, under the action of the elastic member 91, the ratchet ring 54 will eventually be inserted into the tooth mouth, thereby achieving that the hook needle 3 can be locked at any required angle.

[0058] It should be noted that a ratchet ring 54 is provided on one end of the shaft of the left-hand rod body 11 and the right-hand rod body 12, wherein the shaft is fixed to the right-hand rod body 12, and the left-hand rod body 11 is sleeved on the shaft.

[0059] Furthermore, see Figure 1As shown, the tail end of the guide tube 13 is threadedly connected with a fixing cap 7, and the fixing cap 7 is assembled to fix the long rod 2 on the guide tube 13. The long rod 2, the driving assembly 4 and the clamp body 1 can be disassembled through the fixing cap 7, that is: 1. Loosen the fixing cap 7; 2. Manually rotate the connecting rod 42 to separate the threaded rod 41 and the transmission rod 43; 3. Loosen the fixing plate and remove the connecting rod 42 (the connecting rod 42 is threadedly connected to the fixing plate), and then the device can be repaired and damaged parts can be replaced, so that the long rod 2, the rotating seat assembly 6 and the driving assembly 4 can be disassembled and disinfected separately.

[0060] Furthermore, in the specific implementation scheme of the present invention, a section of electric wire is provided in the long rod 2, one end of the electric wire is connected to the hook needle 3, and the other end extends out of the interior of the guide tube 13. In the specific implementation process, the hook needle 3 is energized by the way of electric wire power supply, so that the hook needle 3 performs electric cutting on the common bile duct. The hook needle 3 is designed to be consistent with the specifications of the traditional surgical suture needle. During the operation, the hook needle is used to longitudinally penetrate the common bile duct from one point at the predetermined bile duct incision site and expose the needle tip at another point (the needle body is still retained in the common bile duct tissue), and the hook needle is gently lifted to ensure that the needle body does not contact the contralateral bile duct tissue. The power is turned on to cut from the inside to the outside, so that the incision is less bleeding than the traditional blade / scissors incision, the incision position is more accurate and easy to control; the cutting speed is faster than the traditional electric hook, and the incision direction is from the inside to the outside, avoiding the intraoperative iatrogenic damage to the contralateral bile duct that may be caused by the traditional electric hook incision from the outside to the inside.

[0061] Those skilled in the art will appreciate that other similar connection methods may also be used to implement the present invention, such as welding, bonding or screwing.

[0062] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0063] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A common bile duct cutter hook device for use under laparoscopy, characterized in that: The invention comprises a pliers body (1), wherein the pliers body (1) comprises a left-handed rod body (11) and a right-handed rod body (12), wherein the tail end of the left-handed rod body (11) is provided with a guide tube (13), and the tail end of the right-handed rod body (12) is provided with a dovetail hook portion (14), and further comprises a long rod (2) plugged into the tail end of the guide tube (13), wherein the tail end of the long rod (2) is provided with a hook needle (3), and a driving assembly (4) is provided inside the long rod (2), wherein: The dovetail hook portion (14) moves relative to the guide tube (13), driving the driving assembly (4) to keep the hook needle (3) rotating between 0° and 180°; It also includes a rotating seat assembly (6) axially rotatably mounted on the tail end of the long rod (2), the hook needle (3) is movably mounted on the tail end of the long rod (2) through the rotating seat assembly (6), and the rotating seat assembly (6) is configured to be driven by the driving assembly (4) to keep the hook needle (3) rotating; The driving assembly (4) comprises a threaded rod (41) with a thread on one end and a connecting rod (42), wherein the threadless end of the threaded rod (41) is mounted on the connecting rod (42), a transmission rod (43) is axially rotatably connected inside the long rod (2), the threaded end of the threaded rod (41) is threadedly connected to the transmission rod (43), and a circular gear (431) is mounted on the other end of the transmission rod (43), and the circular gear (431) is assembled to drive the rotating seat assembly (6) to maintain circular motion in any direction; A tension spring (44) is provided on the outer wall of one end of the connecting rod (42) located inside the guide tube (13), and the tension spring (44) is configured to drive the connecting rod (42) to rest on the bottom of the inner side of the guide tube (13). The end of the connecting rod (42) located outside the guide tube (13) is fixed to the dovetail hook (14) through a fixing plate; The rotating seat assembly (6) comprises a rotating disk (61) for fixing the hook needle (3), a driven toothed disk (62) mounted on one end of the rotating disk (61), and a special-shaped toothed disk (63) mounted on the tail end of the long rod (2), the special-shaped toothed disk (63) meshing with the driven toothed disk (62), and the circular gear (431) meshing with the tooth opening of one end surface of the special-shaped toothed disk (63).

2. The common bile duct cutter hook device for laparoscopic use according to claim 1, characterized in that: A locking mechanism (5) is provided on the outer wall of one side of the left-hand circle rod body (11), and the locking mechanism (5) is configured to make the angle between the dovetail hook portion (14) and the guide tube (13) adjustable.

3. The common bile duct cutter hook device for use under laparoscopy according to claim 1, characterized in that: The tail end of the guide tube (13) is threadedly connected to a fixing cap (7), and the fixing cap (7) is assembled to fix the long rod (2) on the guide tube (13).

4. The common bile duct cutting hook device used under laparoscopy according to claim 2, characterized in that: The locking mechanism (5) comprises a hook handle (51), a pull rod (52) and a locking fork (53); a ratchet ring (54) is provided on one end of the shaft of the left-hand circle rod body (11) and the right-hand circle rod body (12); the locking fork (53) is horizontally mounted on the outer wall of the left-hand circle rod body (11), and a pin block (531) inserted into any tooth opening is provided at one end facing the ratchet ring (54); the tail end of the hook handle (51) is axially rotatably mounted on the outer wall of the left-hand circle rod body (11), and the pull rod (52) is configured to enable the locking fork (53) to be driven by the hook handle (51) to maintain horizontal movement.

5. The common bile duct cutter hook device for use under laparoscopy according to claim 4, characterized in that: A guide rail (90) is installed on the outer wall of the left-hand ring rod body (11), and the locking fork (53) is slidably installed in the track of the guide rail (90). An elastic member (91) is arranged in the guide rail (90), and the elastic member (91) is equipped to drive one end of the locking fork (53) with a pin block (531) to be inserted into the ring groove of the ratchet ring (54), and to make the pin block (531) be inserted into any of the tooth openings.

6. The common bile duct cutter hook device for use under laparoscopy according to claim 1, characterized in that: An electric wire is arranged inside the long rod (2); one end of the electric wire is connected to the hook needle (3), and the other end of the electric wire extends out of the interior of the guide tube (13).

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