Ergonomic electronic choledochoscope for minimally invasive surgery

Abstract

The electronic choledochoscope comprises a handle, a choledochoscope body connected to one end of the handle and a snake bone connected to the side, away from the handle, of the choledochoscope body, the handle comprises a handheld section and a handle front section, the choledochoscope body is connected to the handle front section, a tip end seat is arranged at the end, away from the choledochoscope body, of the snake bone, and the tip end seat is connected with the handle front section. The tip seat is used for placing a camera and lighting; a photographing key is arranged on one side, close to the front section of the handle, of the handheld section, and the photographing key is in communication connection with the camera; a follow-up section is connected between the endoscope body and the snake bone, and the hardness of the follow-up section is larger than that of the snake bone and smaller than that of the endoscope body, so that when the snake bone is bent, the follow-up section is bent along with the snake bone; an instrument channel inlet is formed in one side of the front section of the handle, an instrument channel outlet is formed in the tip seat, and the instrument channel inlet is communicated with the inner side of the endoscope body, so that an instrument penetrates through the instrument channel outlet from the instrument channel inlet; according to the electronic choledochoscope, the accuracy and stability of operation and the comfort of an operator can be improved, and damage to the electronic choledochoscope is avoided.

Description

Technical Field

[0001] The invention relates to the field of choledochoscopes, and in particular to an ergonomically designed electronic choledochoscope for use in minimally invasive surgery. Background Art

[0002] Because the common bile duct is located in the upper abdomen of the human body, the patient is in a supine position during open biliary surgery or when a choledochoscope is used to diagnose and treat biliary diseases through the T-tube sinus after surgery. Therefore, the design of the traditional choledochoscope is based on the above position. At present, the vertical choledochoscope suitable for open laparotomy is still used clinically. In terms of insertion method, in traditional open laparotomy, the surgeon directly inserts the front end of the choledochoscope into the cut common bile duct by hand; for postoperative patients who need choledochoscope diagnosis and treatment, it is usually inserted into the common bile duct through the T-tube sinus in the upper abdomen. However, with the advent of laparoscopes, the vast majority of gallbladder and extrahepatic bile duct diseases are currently treated with minimally invasive surgery under laparoscopy, and the use rate of choledochoscopes has also increased significantly. However, the choledochoscopes currently used in clinical practice are still designed decades ago according to the original open laparotomy and postoperative T-tube drainage sinus insertion methods. After the surgical method was changed to laparoscopic minimally invasive surgery, the insertion method of the choledochoscope also changed: in laparoscopic minimally invasive surgery, there is no incision in the abdominal wall, and the hand cannot enter the abdominal cavity. The choledochoscope can only be inserted into the abdominal cavity through the sheath, and then inserted into the incised common bile duct for diagnosis and treatment under direct laparoscope vision. Therefore, the traditionally designed choledochoscope can no longer meet the needs of modern minimally invasive biliary surgery.

[0003] The traditional fiber choledochoscopes or electronic choledochoscopes currently used in hospitals are all soft choledochoscopes. There are several unresolved problems in the process of inserting the sheath into the abdominal cavity and then inserting it into the common bile duct: (1) The soft body of the scope is often difficult to insert smoothly into the metal or plastic sheath due to its easy bending; (2) Since the handle grip is designed to be upright, the surgeon needs to use both hands to operate the whole process, which significantly prolongs the diagnosis and treatment time; (3) After the choledochoscope is inserted into the abdominal cavity, due to the sagging of the soft scope, the surgeon cannot control the direction of its forward advancement and cannot accurately insert the choledochoscope into the incised bile duct. An assistant is required to use a special grasping forceps to help insert the front end of the choledochoscope into the incised common bile duct and continue to push it forward; (4) Improper use of special grasping forceps during assisted surgery can often cause damage to the choledochoscope, which is currently the most common cause of choledochoscope damage in minimally invasive surgery; (5) The above problems often prolong the diagnosis and treatment time. Summary of the invention

[0004] The purpose of the present invention is to provide an ergonomic electronic choledochoscope for use in biliary surgery to improve the stability of minimally invasive surgery, so as to achieve accurate insertion into the bile duct and improve the stability and ease of operation of bile duct diagnosis and treatment.

[0005] In order to solve the above technical problems, the present invention provides an ergonomic electronic choledochoscope used in minimally invasive surgery, comprising a handle, a mirror body connected to one end of the handle, and a snake bone connected to a side of the mirror body away from the handle, wherein the handle comprises a hand-held section and a handle front section, the mirror body is connected to the handle front section, and a tip seat is provided at one end of the snake bone away from the mirror body, and the tip seat is used to place a camera and lighting; a photo button is provided on a side of the hand-held section close to the handle front section, and the photo button is communicatively connected to the camera; a follower section is connected between the mirror body and the snake bone, and the hardness of the follower section is greater than the hardness of the snake bone and less than the hardness of the mirror body, so that when the snake bone is bent, the follower section bends with the snake bone; an instrument channel entrance is provided on one side of the handle front section, and an instrument channel exit is provided on the tip seat, and the instrument channel entrance is communicated with the inner side of the mirror body, so that the instrument is passed from the instrument channel entrance to the instrument channel exit.

[0006] Furthermore, the entrance of the instrument channel is located on a side of the front section of the handle away from the handheld end, and the entrance of the instrument channel is inclined toward a side away from the mirror body.

[0007] Furthermore, the hardness of the follower segment is 55-70 degrees Shore A hardness.

[0008] Furthermore, a control lever is rotatably provided at the head end of the hand-held section, and the control lever is used to control the bending and turning of the snake bone so that the thumb can be placed on the control lever.

[0009] Furthermore, the tip seat is connected to the end of the snake bone, and a camera hole and a lighting hole are opened at the tip seat, so that the camera is placed in the camera hole and the lighting is placed in the lighting hole; and at least two lighting holes are opened at the tip seat, and at least two lighting holes are placed on both sides of the camera hole.

[0010] Furthermore, there is a corner structure between the hand-held section and the front section of the handle, and the corner structure is 75°-85°.

[0011] Furthermore, a side of the hand-holding section away from the corner structure has a convex structure, so that the convex structure matches the center of the palm.

[0012] Furthermore, an arc-shaped groove is provided between the front section of the handle and the camera button so that the index finger can be placed in the arc-shaped groove.

[0013] Furthermore, the end of the hand-held section away from the front section of the handle is inclined toward the side away from the mirror body, and an opening is provided at the end of the hand-held section away from the front section of the handle, so that the pipeline passes through the hand-held section and the front section of the handle in sequence and enters the inner side of the mirror body.

[0014] Furthermore, an arc-shaped transition section is protrudingly arranged between an end of the hand-holding section away from the front section of the handle and the corner structure, so that fingers can be placed on the arc-shaped transition section.

[0015] The beneficial effect of the present invention is that the three-stage insertion section structure with different hardness and softness is adopted in the present solution, which can make the choledochoscope be inserted into the target bile duct more accurately, and ensure that the choledochoscope body and the follower section can be inserted into the target bile duct accurately without the assistance of grasping forceps due to their own hardness after being inserted into the abdominal cavity. Due to the hardness of the mirror body and the special hardness of the follower section (it will only bend when encountering a certain resistance), the direction and force of the choledochoscope to move forward can be ensured, thereby avoiding the possibility of damage caused by the assistant clamping the front end of the choledochoscope.

[0016] This scheme can improve the accuracy of biliary diagnosis and treatment operations and avoid damage to the electronic choledochoscope.

[0017] At the same time, since the photo button is communicatively connected to the camera, the operator can take pictures through the camera in real time by pressing the photo button, which improves the convenience of controlling the camera. There is no need to hold the handle with one hand and control the camera with the other hand, which can help the operator to operate with one hand and free up the other hand for other diagnosis and treatment operations. Due to the setting of the instrument channel entrance, the instrument can enter the mirror body from the front section of the handle and extend from the end of the snake bone to the designated bile duct to ensure the normal use of the instrument. At the same time, since operations such as camera shooting can be performed with one hand, the other free hand can stably control the insertion of the instrument to ensure the stability of the use of the instrument, and the direction of the snake bone can be controlled by the lever to adjust the use position of the instrument.

[0018] In addition, since a soft-hard insertion portion is formed between the snake bone and the endoscope body through the follower segment, when the insertion portion is inserted into the abdominal cavity through the abdominal sheath, the follower segment can ensure that the snake bone will not bend at will. However, when the snake bone needs to bend to enter the bile duct, the follower segment can bend with the snake bone and slide into the bile duct, so that the target bile duct can be inserted without the use of forceps, and the operator can insert the choledochoscope with one hand without the assistance of an assistant. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 It is a schematic diagram of the state when the follower segment follows the snake bone to bend in the present invention.

[0021] Figure 3 It is a schematic diagram of the position of placing the groove in the present invention.

[0022] Figure 4 It is a structural schematic diagram of the tip seat in the present invention.

[0023] Figure 5 It is a schematic diagram of holding of the present invention.

[0024] Figure numerals: 1. handle; 2. lens body; 3. hand-held section; 4. front section of handle; 5. tip seat; 6. photo button; 7. camera hole; 8. lighting hole; 9. corner structure; 10. raised structure; 11. arc-shaped groove; 12. pipeline; 13. arc-shaped transition section; 14. snake bone; 15. control lever; 16. instrument channel entrance; 17. instrument channel exit; 18. follow-up section; 19. placement slot. DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0026] Those skilled in the art should understand that, in the disclosure of the present invention, the orientation or position relationship indicated by the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0027] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0028] like Figure 1-Figure 5 The present invention provides an ergonomic electronic choledochoscope for minimally invasive surgery, comprising a handle 1 and a mirror body 2 connected to one end of the handle 1, wherein the handle 1 comprises a hand-held section 3 and a handle front section 4, the mirror body 2 is connected to the handle front section 3, and a tip seat 5 is provided at one end of the mirror body 2 away from the handle 1, wherein the tip seat 5 is used to place a camera and lighting; a photo button 6 is provided on a side of the hand-held section 3 close to the handle front section 4, and the photo button 6 is communicatively connected to the camera; an instrument channel entrance 16 is provided on one side of the handle front section 4, an instrument channel exit 17 is provided on the tip seat 5, and the instrument channel entrance 16 is communicated with the inner side of the mirror body 2, so that the instrument is passed from the instrument channel entrance 16 to the instrument channel exit 17.

[0029] The operator holds the handheld section so that the front section of the handle can accurately control the direction of the scope body. The operator adjusts the front end snake bone to a straight state through the control lever of the handle, inserts the laparoscope into the abdominal cavity through the abdominal wall sheath, and inserts the bile duct lens end through the cystic duct incision / percutaneous transhepatic puncture of the gallbladder sinus. The operator adjusts the bending direction of the front end while observing, and inserts it through the cystic duct toward the common bile duct to observe whether there are stones or tumors in the cystic duct and common bile duct. Stones / polyps can be treated simultaneously with lasers.

[0030] Traditional choledochoscopes are soft and easy to sag, and the direction of the front end of the choledochoscope cannot be controlled when advancing. An assistant needs to use a grasping forceps to help clamp the front end and guide it into the bile duct incision. This solution can ensure the direction and force of the choledochoscope's forward advancement due to its own hardness, so that it can be accurately inserted into the target bile duct without the help of grasping forceps. In addition, traditional surgery for gallbladder diseases can only be performed by cholecystectomy. This solution can achieve real-time observation of diseases in the gallbladder cavity and cystic duct under choledochoscopy, and simultaneously perform lithotripsy or stone removal, changing the traditional treatment method that requires cholecystectomy and avoiding damage to the electronic choledochoscope.

[0031] At the same time, since the photo button is communicatively connected to the camera, medical staff can take pictures through the camera in real time by pressing the photo button, which improves the convenience of controlling the camera. There is no need to hold the handle with one hand and control the camera with the other hand, which can help the operator to operate with one hand and free up the other hand for other diagnosis and treatment operations. Due to the setting of the instrument channel entrance and the instrument channel exit, the instrument can enter the mirror body from the front section of the handle and extend from the tip seat to the designated target bile duct to ensure the normal use of the instrument. At the same time, since operations such as camera shooting can be performed with one hand, the other free hand can stably control the insertion of the instrument to ensure the stability of the use of the instrument, and the direction of the snake bone is controlled by the lever to adjust the use position of the instrument.

[0032] The lens body adopts a stainless steel capillary; the camera adopts a CMOS camera, the lighting adopts a light guide, and the CMOS camera is TA10 or OVM6946.

[0033] In one embodiment of the present scheme, a biliary mirror snake bone 14 may be provided at the end of the mirror body 2 away from the handle front section 3, and the tip seat 5 is installed at the end of the snake bone 14. At this time, a control lever 15 is rotatably provided at the head end of the hand-held section 3. The control lever 15 is used to control the bending and turning of the snake bone 14. Since the control lever 15 is located between the hand-held section 3 and the handle front section 4, the thumb can be placed on the control lever 15 to accurately adjust the bending of the snake bone 14. Among them, the control structure and method of the snake bone are existing technologies and will not be described in detail here.

[0034] It is worth mentioning that the snake bone in this solution is a snake bone rubber with a hydrophilic polymer material coated on the surface.

[0035] Preferably, a follower segment 18 is connected between the lens body 2 and the serpentine bone 14 , and the hardness of the follower segment 18 is greater than the hardness of the serpentine bone 14 and less than the hardness of the lens body 2 , so that when the serpentine bone 14 bends, the follower segment 18 bends along with the serpentine bone 14 .

[0036] Specifically, since a soft-hard insertion portion is formed between the snake bone and the endoscope body through the follower segment, when the insertion portion is inserted into the abdominal cavity through the abdominal sheath, the follower segment can ensure that the snake bone will not bend at will. However, when the snake bone needs to bend to enter the bile duct, the follower segment can bend with the snake bone and slide into the bile duct, so that the target bile duct can be inserted without the use of forceps, and the operator can insert the choledochoscope with one hand without the assistance of an assistant.

[0037] In a preferred embodiment of the present invention, the hardness of the follower segment 18 is 55-70 degrees Shore A hardness.

[0038] Preferably, the instrument channel entrance 16 is located on a side of the handle front section 4 away from the handheld end 3 , and the instrument channel entrance 16 is inclined toward a side away from the mirror body 2 .

[0039] Specifically, when the instrument is inserted from the entrance of the instrument channel, since the entrance of the instrument channel is inclined toward the side away from the mirror body, the outer end of the instrument exposed at the entrance of the instrument channel will be inclined away from the mirror body, thereby avoiding the instrument from affecting the mirror body during use.

[0040] Preferably, the tip seat 5 is connected to the end of the lens body 2 , and a camera hole 7 and a lighting hole 8 are opened at the tip seat 5 , so that the camera is placed in the camera hole 7 and the lighting is placed in the lighting hole 8 .

[0041] Specifically, the camera and the lighting are limited and fixed through the camera hole and the lighting hole respectively, so as to improve the stability of use during surgery and avoid the situation that the camera or the lighting is separated from the tip seat.

[0042] The tip seat and the lens body are connected by adhesive, and the photo button can be connected to the camera by wired or wireless communication.

[0043] In one embodiment of the present scheme, at least two lighting holes 8 are provided at the tip seat 5, and at least two lighting holes 8 are disposed on both sides of the camera hole 7, thereby ensuring that both sides of the camera have lighting sources, thereby improving the camera's shooting clarity.

[0044] Preferably, a corner structure 9 is provided between the hand-held section 3 and the handle front section 4, and the corner structure 9 is 75°-85°.

[0045] Specifically, when the operator holds the hand-held section, the hand-held section will be used vertically due to the normal raised state of the hand. At this time, the front section of the handle is horizontal through the setting of the corner structure, which in turn drives the mirror body to be used in a horizontal state to ensure that the mirror body can smoothly enter the gallbladder cavity.

[0046] It is worth mentioning that when the hand is raised normally, it will not remain completely vertical, but will be tilted to a certain extent compared to the vertical state. In order to ensure the stability of the mirror body and the comfort of the hand angle, this solution sets the corner structure to 75°-85°. Compared with the 90° right angle, this angle is more in line with the normal use state of the human hand, which is conducive to the comfort of holding the handle for a long time during surgery.

[0047] Preferably, the side of the hand-holding section 3 facing away from the corner structure 9 has a protruding structure 10, so that the protruding structure 10 matches the center of the palm.

[0048] Specifically, when holding the handle, the raised structure can be used to support the center of the palm, so that the center of the palm will not be in a loose grip state, which is conducive to comfortable holding for a long time and avoids the situation where the palm is loosely gripped for a long time and causes unstable force, thereby causing hand soreness or unstable lens body.

[0049] It is worth mentioning that through the joint cooperation of the hand-held section, the front section of the handle, the corner structure and the raised structure, the overall handle is in a "woodpecker" shape, which can effectively provide stability at the lens body.

[0050] Preferably, an arc-shaped groove 11 is provided between the front section 4 of the handle and the camera button 6 , so that the index finger can be placed in the arc-shaped groove 11 .

[0051] Specifically, by setting the arc-shaped groove, the index finger can be stably placed on the arc-shaped groove. When the camera button is not in use, the arc-shaped groove can support the index finger to avoid soreness and swelling caused by long-term exertion of force on the index finger, and to prevent the index finger from accidentally touching the camera button.

[0052] Preferably, the end of the hand-held section 3 away from the handle front section 4 is inclined toward the side away from the mirror body 2, and an opening is provided at the end of the hand-held section 3 away from the handle front section 4, so that the pipeline 12 passes through the hand-held section 3 and the handle front section 4 in sequence from the opening to the inside of the mirror body 2.

[0053] Specifically, the pipeline is connected to the inner side of the scope body through the opening position, so that the camera and lighting at the tip seat can be connected to the pipeline to ensure the stability of the camera and lighting. At the same time, because the end of the hand-held section away from the front section of the handle is inclined toward the side away from the scope body, when the pipeline extends outward from the opening, the pipeline will extend to a position away from the scope body to ensure that the pipeline will not affect the side of the scope, thereby improving stability during surgery.

[0054] Among them, pipelines refer to various lines such as cables and wires.

[0055] Preferably, a protruding arc-shaped transition section 13 is provided between the end of the hand-held section 3 away from the handle front section 4 and the corner structure 9 , so that fingers can be placed on the arc-shaped transition section 13 .

[0056] Specifically, when the hand holds the handle, the index finger is placed on the arc-shaped groove and the palm is located on the raised structure. At this time, the remaining fingers can be grasped on the arc-shaped transition section so that the remaining fingers fit the outside of the hand-holding section, thereby increasing the stability and comfort of holding.

[0057] In one embodiment of the present scheme, a plurality of recessed placement grooves 19 are sequentially provided at the arc-shaped transition section 13 along the distribution direction of finger gripping, so that when the fingers are placed at the arc-shaped transition section 13, each finger can be placed in each corresponding placement groove 19 in turn, providing stability in the finger gripping state.

[0058] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that are the same or similar to those of the present application fall within the protection scope of the present invention.

Claims

1. An ergonomic electronic choledochoscope for minimally invasive surgery, characterized by: The invention comprises a handle (1), a lens body (2) connected to one end of the handle (1), and a snake bone (14) connected to a side of the lens body (2) away from the handle (1); the handle (1) comprises a hand-held section (3) and a handle front section (4); the lens body (2) is connected to the handle front section (3); a tip seat (5) is arranged at one end of the snake bone (14) away from the lens body (2); the tip seat (5) is used for placing a camera and lighting; a photo button (6) is arranged on a side of the hand-held section (3) close to the handle front section (4), and the photo button (6) is in communication connection with the camera; A follower section (18) is connected between the mirror body (2) and the serpentine bone (14), and the hardness of the follower section (18) is greater than the hardness of the serpentine bone (14) and less than the hardness of the mirror body (2), so that when the serpentine bone (14) bends, the follower section (18) bends along with the serpentine bone (14); an instrument channel entrance (16) is provided on one side of the handle front section (4), an instrument channel exit (17) is provided on the tip seat (5), and the instrument channel entrance (16) is communicated with the inner side of the mirror body (2), so that an instrument can pass through the instrument channel entrance (16) to the instrument channel exit (17).

2. The ergonomic electronic choledochoscope for minimally invasive surgery according to claim 1, characterized in that: The instrument channel entrance (16) is located on a side of the handle front section (4) away from the handheld end (3), and the instrument channel entrance (16) is inclined toward a side away from the mirror body (2).

3. The ergonomic electronic choledochoscope for minimally invasive surgery according to claim 1, characterized in that: The hardness of the follower section (18) is 55-70 degrees Shore A hardness.

4. The ergonomic electronic choledochoscope for minimally invasive surgery according to claim 1, characterized in that: A control lever (15) is rotatably arranged at the head end of the hand-held section (3), and the control lever (15) is used to control the bending and turning of the snake bone (14) so ​​that the thumb can be placed on the control lever (15).

5. The ergonomic electronic choledochoscope for minimally invasive surgery according to claim 1, characterized in that: The tip seat (5) is connected to the end of the snake bone (14), and a camera hole (7) and a lighting hole (8) are provided at the tip seat (5), so that the camera is placed in the camera hole (7) and the lighting is placed in the lighting hole (8); and at least two lighting holes (8) are provided at the tip seat (5), and the at least two lighting holes (8) are respectively placed on both sides of the camera hole (7).

6. The ergonomic electronic choledochoscope for minimally invasive surgery according to claim 1, characterized in that: A corner structure (9) is provided between the hand-held section (3) and the handle front section (4), and the corner structure (9) is 75°-85°.

7. The ergonomic electronic choledochoscope for minimally invasive surgery according to claim 6, characterized in that: The hand-holding section (3) has a convex structure (10) on one side facing away from the corner structure (9), so that the convex structure (10) matches the center of the palm.

8. The ergonomic electronic choledochoscope for minimally invasive surgery according to claim 1, characterized in that: An arc-shaped groove (11) is provided between the front section of the handle (4) and the camera button (6), so that the index finger can be placed in the arc-shaped groove (11).

9. The ergonomic electronic choledochoscope for minimally invasive surgery according to claim 1, characterized in that: The end of the hand-held section (3) away from the handle front section (4) is arranged to be inclined toward the side away from the mirror body (2), and the end of the hand-held section (3) away from the handle front section (4) is provided with an opening, so that the pipeline (12) passes through the hand-held section (3) and the handle front section (4) in sequence from the opening to enter the inner side of the mirror body (2).

10. The ergonomic electronic choledochoscope for minimally invasive surgery according to claim 1, characterized in that: A protruding arc-shaped transition section (13) is provided between the end of the hand-held section (3) away from the handle front section (4) and the corner structure (9), so that fingers can be placed on the arc-shaped transition section (13).

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