Endoscope working channel creating device

Abstract

The invention provides an endoscope working channel creating device, and belongs to the technical field of medical instruments. The endoscope working channel creating device comprises an inner push rod and a first sleeve, the inner push rod is arranged in the first sleeve in a penetrating mode, the lower end of the inner push rod is provided with a pushing-away tip, the pushing-away tip is located below the first sleeve, the lower end of the first sleeve is provided with observation windows, and the multiple sets of observation windows are distributed in the circumferential direction of the first sleeve. A connecting water pipe is arranged on the side wall of the upper end of the first sleeve and communicates with the interior of the first sleeve, a control valve is arranged on the connecting water pipe, a plugging piece is arranged at the upper end of the first sleeve and located above the connecting water pipe, and the upper end of the inner push rod penetrates through the plugging piece and is located above the first sleeve. According to the endoscope working channel creating device, after the endoscope working channel creating device is placed into the human body, the inner push rod is pulled out, the shoulder arthroscope extends into the first sleeve, and the observation range of the shoulder arthroscope is enlarged through the observation window.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and particularly relates to a device for creating a working channel of a laparoscope. Background Art

[0002] An arthroscope is a surgical instrument obtained by combining an optical microscope and a magnifying glass. The arthroscope is an endoscope placed in a joint and is mainly an auxiliary tool for surgeries on patients with shoulder joint pain and limited mobility. After the surgery, sutures are needed to suture the wound. The shoulder arthroscope is a rod-shaped optical instrument used for minimally invasive arthroscopic surgery. During the surgery, after the arthroscope lens enters the surgical area through the initial surgical incision channel, various anatomical structures of the shoulder joint can be observed in real time through the lens. Using the shoulder arthroscope to replace the human eye for observation, for the diagnosis and treatment of diseases, it has many advantages such as small incisions, less trauma, fast recovery, and relatively fewer complications. In shoulder arthroscopic surgery, an incision of about 0.5 - 0.8 cm is usually made on the patient, and the shoulder arthroscope is inserted into the joint cavity through the surgical incision channel. During the surgery, surgical instruments and the arthroscope will repeatedly enter and exit this channel. When the angle of joint movement changes, it often occurs that the "inner opening" cannot be found within a short time. In addition, during the surgery, due to poor vision, more tissues and synovium need to be resected, resulting in more damage to the soft tissues in the joint cavity and an extension of the surgical time. Therefore, a sleeve is needed to maintain the surgical incision channel. During conventional shoulder arthroscopic surgery, to keep the surgical field clear and reduce intraoperative bleeding, a large amount of normal saline needs to be continuously perfused to expand the joint cavity. However, limited by the sleeve, after the shoulder arthroscope enters the joint cavity through the sleeve, the field of view is restricted, which is not conducive to surgical observation and leads to an extension of the surgical time. Summary of the Invention

[0003] The purpose of the present invention is to provide a device for creating a working channel of a laparoscope, aiming to solve the problem that the sleeve limits the field of view of the shoulder arthroscope.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: to provide a device for creating a working channel of a laparoscope, including an inner push rod and a first sleeve. The inner push rod is inserted into the first sleeve. A pushing tip is provided at the lower end of the inner push rod, and the pushing tip is located below the first sleeve. An observation window is provided at the lower end of the first sleeve, and multiple groups of the observation windows are distributed along the circumferential direction of the first sleeve. A connecting water pipe is provided on the side wall of the upper end of the first sleeve, and the connecting water pipe communicates with the inside of the first sleeve. A control valve is provided on the connecting water pipe. A sealing member is provided at the upper end of the first sleeve, and the sealing member is located above the connecting water pipe. The upper end of the inner push rod passes through the sealing member and is located above the first sleeve.

[0005] In a possible implementation, the plugging member includes a plugging seat, a first plugging piece, and a second plugging piece. The plugging seat is disposed at the upper end of the first sleeve. The first plugging piece and the second plugging piece are disposed within the plugging seat. The first plugging piece is disposed above the second plugging piece. The first plugging piece and the second plugging piece are made of a material with elastic deformation.

[0006] In a possible implementation, the height of the center of the first plugging piece is lower than the height of its edge, and the height of the center of the second plugging piece is lower than the height of its edge.

[0007] In a possible implementation, an upper mating ring is disposed on the lower end surface of the edge of the first plugging piece, and a lower mating ring is disposed on the upper end surface of the edge of the second plugging piece. The upper mating ring mates with the lower mating ring.

[0008] In a possible implementation, a skin positioning assembly is sleeved outside the first sleeve. The lower end of the skin positioning assembly is located above the observation window, the upper end of the skin positioning assembly is located below the connecting water pipe, and the lower end of the skin positioning assembly is telescopically disposed inside the skin.

[0009] In a possible implementation, the skin positioning assembly includes a second sleeve and a spiral spring piece. The second sleeve is sleeved outside the first sleeve. The second sleeve is rotatably disposed. The first end of the spiral spring piece is disposed at the lower end of the second sleeve, and the second end of the spiral spring piece is disposed on the first sleeve. The spiral spring piece is spirally sleeved outside the first sleeve. By rotating the second sleeve, the spiral spring piece expands outwards and extends into the inside of the skin.

[0010] In a possible implementation, a third sleeve is sleeved outside the second sleeve. The lower end of the third sleeve is located above the second end of the spiral spring piece and is disposed close to the second end of the spiral spring piece.

[0011] In a possible implementation, a positioning ball is disposed on the side wall of the first sleeve, and a positioning chute is disposed on the side wall of the second sleeve. The positioning chute is sleeved outside the positioning ball, and the positioning chute defines the rotation trajectory of the second sleeve.

[0012] In a possible implementation, a limiting member is disposed at the upper end of the second sleeve, and the limiting member is used to limit the rotation of the second sleeve.

[0013] In a possible implementation, the limiting member includes a limiting rod. A relief hole adapted for the limiting rod to pass through is provided on the side wall of the upper end of the second sleeve. A limiting surface is provided on the outer side wall of the upper end of the first sleeve. The limiting rod penetrates into the second sleeve and abuts against the limiting surface to lock the rotation of the second sleeve.

[0014] The beneficial effects of a laparoscopic working channel creating device provided by the present invention are as follows:

[0015] Compared with the prior art, an inner push rod and a first sleeve are provided. The first sleeve is sleeved in the middle of the inner push rod. The pushing tip is provided at the lower end of the inner push rod and is located outside the first sleeve. The pushing tip is convenient for piercing into the surgical incision channel. The observation window is provided at the lower end of the first sleeve, and multiple groups of observation windows are arranged along the circumferential direction of the first sleeve. After the device is placed into the human body, the inner push rod is withdrawn, and the shoulder arthroscope is inserted into the first sleeve. With the help of the observation window, the observation range of the shoulder arthroscope is expanded, and the operation time is shortened. The first end of the connecting water pipe is provided on the side wall of the upper end of the first sleeve, and the connecting water pipe is communicated with the internal space of the first sleeve. A control valve is provided on the connecting water pipe. The second end of the connecting water pipe can be connected to a three-way valve, and the other two ends of the three-way valve are respectively connected to a water inlet pipe and a water outlet pipe, which is convenient for injecting physiological saline into the joint cavity and discharging the physiological saline in the joint cavity. The sealing member is provided at the upper end of the first sleeve for sealing the upper end of the first sleeve. The sealing member is located above the connecting water pipe. After the inner push rod is taken out, the sealing member automatically closes to seal the upper end of the first sleeve, greatly reducing the outflow of physiological saline in the joint cavity, helping to maintain the pressure in the joint cavity, reducing the waste of water resources, and avoiding excessive liquid outflow from affecting the operation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a three-dimensional structure schematic diagram of a laparoscopic working channel creating device provided by an embodiment of the present invention;

[0018] Figure 2 It is an exploded structure schematic diagram of a laparoscopic working channel creating device provided by an embodiment of the present invention Figure 1 ;

[0019] Figure 3 It is an exploded structure schematic diagram of a laparoscopic working channel creating device provided by an embodiment of the present invention Figure 2 ;

[0020] Figure 4 Schematic vertical sectional structure view of the plugging member adopted in the embodiment of the present invention.

[0021] In the figure: 1, inner push rod; 2, pushing tip; 3, first sleeve; 4, observation window; 5, connecting water pipe; 6, control valve; 7, plugging member; 8, plugging seat; 9, first plugging piece; 10, first plugging flap; 11, upper fitting ring; 12, second plugging piece; 13, lower fitting ring; 14, wire arranging block; 15, positioning ball; 16, limiting surface; 17, fixing block; 18, upper limiting block; 19, lower limiting block; 20, second sleeve; 21, spiral spring piece; 22, positioning chute; 23, third sleeve; 24, limiting rod. Specific embodiments

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] Please refer to Figures 1 to 4 , and a specific embodiment of a laparoscopic working channel creating device provided by the present invention will be described. It includes an inner push rod 1 and a first sleeve 3. The inner push rod 1 is inserted into the first sleeve 3. A pushing tip 2 is provided at the lower end of the inner push rod 1. The pushing tip 2 is located below the first sleeve 3. An observation window 4 is provided at the lower end of the first sleeve 3. Multiple groups of observation windows 4 are distributed along the circumferential direction of the first sleeve 3. A connecting water pipe 5 is provided on the side wall at the upper end of the first sleeve 3. The connecting water pipe 5 communicates with the inside of the first sleeve 3, and a control valve 6 is provided on the connecting water pipe 5. A plugging member 7 is provided at the upper end of the first sleeve 3. The plugging member 7 is located above the connecting water pipe 5. The upper end of the inner push rod 1 passes through the plugging member 7 and is located above the first sleeve 3.

[0024] A device for creating a working channel of a laparoscope provided by the present invention, compared with the prior art, is provided with an inner push rod 1 and a first sleeve 3. The first sleeve 3 is sleeved in the middle of the inner push rod 1. The pushing tip 2 is arranged at the lower end of the inner push rod 1 and is located outside the first sleeve 3. The pushing tip 2 is convenient for piercing into the surgical incision channel. The observation window 4 is arranged at the lower end of the first sleeve 3. A plurality of groups of observation windows 4 are arranged along the circumferential direction of the first sleeve 3. After the device is placed into the human body, the inner push rod 1 is withdrawn, and the shoulder arthroscope is inserted into the first sleeve 3. With the help of the observation window 4, the observation range of the shoulder arthroscope is expanded, and the operation time is shortened. The first end of the connecting water pipe 5 is arranged on the side wall at the upper end of the first sleeve 3. The connecting water pipe 5 is communicated with the inner space of the first sleeve 3. A control valve 6 is arranged on the connecting water pipe 5. The second end of the connecting water pipe 5 can be connected to a three-way valve. The other two ends of the three-way valve are respectively connected to a water inlet pipe and a water outlet pipe, which is convenient for injecting physiological saline into the joint cavity and discharging the physiological saline in the joint cavity. A sealing member 7 is arranged at the upper end of the first sleeve 3 for sealing the upper end of the first sleeve 3. The sealing member 7 is located above the connecting water pipe 5. After the inner push rod 1 is taken out, the sealing member 7 automatically closes and seals the upper end of the first sleeve 3, greatly reducing the outflow of physiological saline in the joint cavity, helping to maintain the pressure in the joint cavity, reducing the waste of water resources, and avoiding excessive liquid outflow from affecting the operation process.

[0025] Specifically, please refer to Figures 1 to 4 , including an inner push rod 1 and a first sleeve 3. The inner push rod 1 is inserted into the first sleeve 3. Both the upper and lower ends of the inner push rod 1 are located outside the first sleeve 3. The pushing tip 2 is arranged at the lower end of the inner push rod 1, and the pushing tip 2 penetrates through the lower end of the first sleeve 3. The pushing tip 2 is conical, which is convenient for piercing into the surgical incision channel and reducing the damage to the patient. The lower end of the first sleeve 3 is provided with an observation window 4. The observation window 4 is arranged along the length direction of the first sleeve 3. There are three groups of observation windows 4, and the three groups of observation windows 4 are evenly distributed along the circumferential direction of the first sleeve 3. The four corners of the observation window 4 are provided with arc chamfers. The lower end of the first sleeve 3 is provided with a transition chamfer. The side wall at the upper end of the first sleeve 3 is provided with a connecting water pipe 5. The first end of the connecting water pipe 5 is arranged on the side wall of the first sleeve 3. The second end of the connecting water pipe 5 can be connected to a three-way valve. The other two ends of the three-way valve are respectively connected to a water inlet pipe and a water outlet pipe, which is convenient for injecting physiological saline into the joint cavity and discharging the physiological saline in the joint cavity. The control valve 6 is arranged at the first end of the connecting water pipe 5, and the control valve 6 can control the discharge and discharge of physiological saline. The sealing member 7 is arranged at the upper end of the first sleeve 3. The sealing member 7 is located above the connecting water pipe 5. The sealing member 7 is used for sealing the first sleeve 3 to reduce the leakage of water during use.

[0026] Furthermore, please refer to Figures 1 to 4, when the device is in use, the inner push rod 1 is inserted into the first sleeve 3, and the device is inserted into the surgical incision channel of the patient. Pushing the tip 2 helps to insert into the surgical incision channel. When the device is inserted to the specified position, the inner push rod 1 is pulled out, the control valve 6 is opened, water is injected into the joint cavity, and the shoulder arthroscope is inserted into the first sleeve 3 to observe the joint cavity. The control valve 6 is adjusted according to the actual surgical situation to control the water pressure in the joint cavity.

[0027] As a specific implementation manner of a laparoscopic working channel creating device provided by the present invention, please refer to Figures 1 to 4 , the sealing member 7 includes a sealing seat 8, a first sealing piece 9 and a second sealing piece 12. The sealing seat 8 is arranged at the upper end of the first sleeve 3. The first sealing piece 9 and the second sealing piece 12 are arranged in the sealing seat 8. The first sealing piece 9 is arranged above the second sealing piece 12. The first sealing piece 9 and the second sealing piece 12 are made of materials with elastic deformation.

[0028] Specifically, please refer to Figures 1 to 4 , the sealing member 7 includes a sealing seat 8, a first sealing piece 9 and a second sealing piece 12. The sealing seat 8 covers the upper end of the first sleeve 3. The sealing seat 8 is detachably arranged. The sealing seat 8 includes a sealing cylinder body and a sealing ring. The sealing ring is arranged at the upper end of the sealing cylinder body. The first sealing piece 9 and the second sealing piece 12 are stacked from top to bottom. The first sealing piece 9 and the second sealing piece 12 are arranged in the sealing cylinder body. The sealing ring limits the first sealing piece 9 and the second sealing piece 12 to prevent the first sealing piece 9 and the second sealing piece 12 from falling off during use. The first sealing piece 9 and the second sealing piece 12 are made of materials with elastic deformation. The first sealing piece 9 and the second sealing piece 12 can be made of materials such as silica gel and rubber, which can produce certain deformation and the deformation can be restored. The centers of the first sealing piece 9 and the second sealing piece 12 are suitable for the insertion of the inner push rod 1. The first sealing piece 9 is provided with a first incision. The first incision is provided with multiple groups, which can be set to three groups, and are arranged in a divergent manner with the center of the first sealing piece 9 as the center of the circle. A first sealing flap 10 is formed between adjacent two groups of first incisions. The second sealing piece 12 is provided with a second incision. The second incision is provided with multiple groups, which can be set to three groups, and are arranged in a divergent manner with the center of the second sealing piece 12 as the center of the circle. A second sealing flap is formed between adjacent two groups of second incisions. In the case where the inner push rod 1 or other surgical instruments are not inserted, the first sealing flap 10 and the second sealing flap are both in a closed state, which can reduce the leakage of water. The inner push rod 1 or other surgical instruments pass through between the first sealing flaps 10 and between the second sealing flaps. The first sealing flaps 10 and the second sealing flaps are in an open state, and the first sealing flaps 10 and the second sealing flaps will fit the outer side walls of the inner push rod 1 or other surgical instruments to reduce the leakage of water during the use of the inner push rod 1 or other surgical instruments.

[0029] Furthermore, please refer toFigures 1 to 4 On the outer side wall of the plugging seat 8, there are wire arranging blocks 14. There are multiple groups of wire arranging blocks 14, and the multiple groups of wire arranging blocks 14 are evenly arranged along the circumferential direction of the plugging seat 8. At the lower end of the wire arranging block 14, there is a wire arranging groove, and the wire arranging groove is suitable for winding the surgical thread, which helps to comb the surgical thread and improve the surgical efficiency.

[0030] As a specific embodiment of a laparoscopic working channel creating device provided by the present invention, please refer to Figures 1 to 4 The height of the center of the first plugging piece 9 is lower than the height of its edge, and the height of the center of the second plugging piece 12 is lower than the height of its edge.

[0031] Specifically, please refer to Figures 1 to 4 As it gradually approaches the center of the first plugging piece 9, the height of the first plugging flap 10 gradually decreases. As it gradually approaches the center of the second plugging piece 12, the height of the second plugging flap gradually decreases, which helps to improve the water plugging effect.

[0032] As a specific embodiment of a laparoscopic working channel creating device provided by the present invention, please refer to Figures 1 to 4 At the lower end face of the edge of the first plugging piece 9, there is an upper anastomosis ring 11. At the upper end face of the edge of the second plugging piece 12, there is a lower anastomosis ring 13, and the upper anastomosis ring 11 is anastomosed with the lower anastomosis ring 13.

[0033] Specifically, please refer to Figures 1 to 4 The upper anastomosis ring 11 is arranged at the lower end face of the edge of the first plugging piece 9, and the lower anastomosis ring 13 is arranged at the upper end face of the edge of the second plugging piece 12. The upper anastomosis ring 11 and the lower anastomosis ring 13 are arranged oppositely. On the lower end face of the upper anastomosis ring 11, there is an upper anastomosis groove, and on the upper end face of the lower anastomosis ring 13, there is a lower anastomosis groove. When the upper anastomosis ring 11 and the lower anastomosis ring 13 are stacked, the upper anastomosis groove and the lower anastomosis groove are staggered from each other. The lower end face of the upper anastomosis ring 11 matches the upper end face of the lower anastomosis ring 13, and the two are assembled together to increase the installation stability of the first plugging piece 9 and the second plugging piece 12.

[0034] As a specific embodiment of a laparoscopic working channel creating device provided by the present invention, please refer to Figures 1 to 3 A skin positioning component is sleeved outside the first sleeve 3. The lower end of the skin positioning component is located above the observation window 4, and the upper end of the skin positioning component is located below the connecting water pipe 5. The lower end of the skin positioning component is telescopically arranged inside the skin.

[0035] Specifically, please refer to Figures 1 to 3, the skin positioning component is sleeved outside the first sleeve 3. The skin positioning component is used to limit the device on the patient's skin. The lower end of the skin positioning component is located above the observation window 4 to avoid affecting the field of view of the arthroscope. The upper end of the skin positioning component is located below the connecting water pipe 5 to avoid the connecting water pipe 5 affecting the use of the skin positioning component. When the device enters the human body, the observation window 4 is located in the joint cavity, the lower end of the skin positioning component is located in the joint cavity and is arranged close to the inner surface of the skin. The lower end of the skin positioning component is provided with a telescopic structure. In the initial state, the telescopic structure at the lower end of the skin positioning component is in a contracted state, which is convenient for the device to be inserted into the patient's body. After the device is inserted into the specified position, the telescopic structure at the lower end of the skin positioning component is adjusted to an extended state, and the telescopic structure extends towards the skin around the device. The telescopic structure extends below the inner surface of the skin to limit the device on the skin.

[0036] As a specific implementation manner of a device for creating a working channel for a laparoscope provided by the present invention, please refer to Figures 1 to 3 , the skin positioning component includes a second sleeve 20 and a spiral spring piece 21. The second sleeve 20 is sleeved outside the first sleeve 3. The second sleeve 20 is rotatably arranged. The first end of the spiral spring piece 21 is arranged at the lower end of the second sleeve 20, and the second end of the spiral spring piece 21 is arranged on the first sleeve 3. The spiral spring piece 21 is spirally sleeved outside the first sleeve 3. Rotating the second sleeve 20, the spiral spring piece 21 expands outwards and extends towards the inner side of the skin.

[0037] Specifically, please refer to Figures 1 to 3The skin positioning component includes a second sleeve 20 and a spiral spring piece 21. The second sleeve 20 is sleeved on the outside of the first sleeve 3. The second sleeve 20 is located in the middle of the first sleeve 3. The second sleeve 20 is rotatable relative to the first sleeve 3. The spiral spring piece 21 is spiral. The spiral spring piece 21 is sleeved on the outside of the first sleeve 3. The first end of the spiral spring piece 21 is arranged on the end surface of the lower end of the second sleeve 20. A fixing block 17 is provided at the lower end of the first sleeve 3. A fixing groove is provided on the side wall of the fixing block 17. The second end of the spiral spring piece 21 penetrates into the fixing groove. The fixing groove fixes the second end of the spiral spring piece 21. The spiral spring piece 21 is provided with multiple groups, which can be set to three groups. The first ends of the three groups of spiral spring pieces 21 are evenly distributed on the end surface of the lower end of the second sleeve 20. The spiral spring pieces 21 have the same rotation direction and can extend downward clockwise or counterclockwise. The three groups of spiral spring pieces 21 are staggered in the process of extending downward. An upper limit block 18 and a lower limit block 19 are provided on the tube 3. The upper end of the upper limit block 18 is arranged below the first end of the spiral spring piece 21, and the lower limit block 19 is arranged directly below the upper limit block 18. A clearance groove suitable for the spiral spring piece 21 on the side to pass through is formed between the upper limit block 18 and the lower limit block 19. The upper limit block 18 and the spiral spring piece 21 are arranged one-to-one, and the lower limit block 19 and the upper limit block 18 are arranged one-to-one. The upper limit block 18 and the lower limit block 19 cooperate to limit the rotation trajectory of the spiral spring piece 21, which is explained by the spiral spring piece 21 extending clockwise downward. In the initial state, the spiral spring piece 21 is wound around the outside of the first sleeve 3. After the device is placed in the specified position, the second sleeve 20 is rotated clockwise, and the spiral of the spiral spring piece 21 gradually weakens. The spiral spring piece 21 expands toward the skin around the device, and the spiral spring piece 21 enters below the inner surface of the skin and presses against the inner surface of the skin to achieve locking of the device.

[0038] As a specific implementation of a laparoscope working channel creation device provided by the present invention, please refer to Figures 1 to 3 A third sleeve 23 is sleeved on the outside of the second sleeve 20 , and a lower end of the third sleeve 23 is located above the second end of the spiral spring piece 21 and is arranged close to the second end of the spiral spring piece 21 .

[0039] For details, please refer to Figures 1 to 3 The third sleeve 23 is sleeved on the outside of the second sleeve 20, the upper end of the third sleeve 23 is located below the upper end of the second sleeve 20, and the lower end of the third sleeve 23 is located above the fixed block 17. In the initial state, the upper and middle parts of the spiral spring piece 21 are both located in the third sleeve 23, and the second end of the spiral spring piece 21 is located outside the third sleeve 23. When the third sleeve 23 is rotated, the second sleeve 20 and the third sleeve 23 rotate synchronously, and the spiral spring piece 21 expands outward under the third sleeve 23. The third sleeve 23 limits the expansion of the spiral spring piece 21, so that the device is stuck on the inner surface of the skin.

[0040] As a specific implementation manner of a laparoscopic working channel creating device provided by the present invention, please refer to Figures 1 to 3 , a positioning ball 15 is provided on the side wall of the first sleeve 3, a positioning chute 22 is provided on the side wall of the second sleeve 20, the positioning chute 22 is sleeved outside the positioning ball 15, and the positioning chute 22 defines the rotation track of the second sleeve 20.

[0041] Specifically, please refer to Figures 1 to 3 , the positioning ball 15 is provided on the side wall of the first sleeve 3, the positioning chute 22 is provided on the side wall of the second sleeve 20, the positioning ball 15 is located in the positioning chute 22, and as the second sleeve 20 rotates, under the action of the positioning ball 15, the second sleeve 20 slides along a specified track. Taking the spiral elastic piece 21 extending clockwise downward as an example, in the initial state, the positioning ball 15 is located at the first end of the positioning chute 22, and the second end of the positioning chute 22 is obliquely above the first end of the positioning chute 22, which is convenient for later rotating out the spiral elastic piece 21.

[0042] As a specific implementation manner of a laparoscopic working channel creating device provided by the present invention, please refer to Figures 1 to 3 , a limiting member is provided at the upper end of the second sleeve 20, and the limiting member is used to limit the rotation of the second sleeve 20.

[0043] Specifically, please refer to Figures 1 to 3 , the limiting member is provided at the upper end of the second sleeve 20, and when the second sleeve 20 rotates to a specified state, the limiting member is used to limit the rotation of the second sleeve 20.

[0044] As a specific implementation manner of a laparoscopic working channel creating device provided by the present invention, please refer to Figures 1 to 3 , the limiting member includes a limiting rod 24, a through hole suitable for the limiting rod 24 to pass through is provided on the side wall at the upper end of the second sleeve 20, a limiting surface 16 is provided on the outer side wall at the upper end of the first sleeve 3, the limiting rod 24 penetrates into the second sleeve 20 and abuts against the limiting surface 16 to lock the rotation of the second sleeve 20.

[0045] Specifically, please refer to Figures 1 to 3 , the limiting member is the limiting rod 24, a through hole is provided on the side wall at the upper end of the second sleeve 20, the limiting rod 24 passes through the through hole and penetrates into the inside of the second sleeve 20, a limiting surface 16 is provided on the outer side wall at the upper end of the first sleeve 3, the limiting surface 16 is arranged along the length direction of the first sleeve 3, multiple groups of limiting surfaces 16 are arranged along the circumferential direction of the first sleeve 3 at equal intervals, after the limiting rod 24 penetrates into the second sleeve 20, it just fits outside the limiting surface 16, and the limiting surface 16 cooperates with the limiting rod 24 to lock the rotation of the second sleeve 20.

[0046] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. An endoscopic working channel creating device, characterized in that It includes an inner push rod and a first sleeve, the inner push rod is inserted into the first sleeve, the lower end of the inner push rod is provided with a push-open tip, the push-open tip is located below the first sleeve, the lower end of the first sleeve is provided with an observation window, and multiple groups of observation windows are distributed along the circumference of the first sleeve, a connecting water pipe is provided on the side wall of the upper end of the first sleeve, the connecting water pipe is connected to the interior of the first sleeve, and a control valve is provided on the connecting water pipe, a sealing piece is provided at the upper end of the first sleeve, the sealing piece is located above the connecting water pipe, the upper end of the inner push rod passes through the sealing piece and is located above the first sleeve.

2. The laparoscopic working channel creating device according to claim 1, wherein, The blocking member includes a blocking seat, a first blocking piece and a second blocking piece. The blocking seat is arranged at the upper end of the first sleeve. The first blocking piece and the second blocking piece are arranged in the blocking seat. The first blocking piece is arranged above the second blocking piece. The first blocking piece and the second blocking piece are made of a material with elastic deformation.

3. The laparoscopic working channel creating device according to claim 2, wherein, The height of the center of the first blocking piece is lower than the height of the edge thereof, and the height of the center of the second blocking piece is lower than the height of the edge thereof.

4. The laparoscopic working channel creating device according to claim 2, wherein, An upper anastomotic ring is arranged on the lower end surface of the edge of the first blocking piece, and a lower anastomotic ring is arranged on the upper end surface of the edge of the second blocking piece, and the upper anastomotic ring is in agreement with the lower anastomotic ring.

5. The endoscopic working channel creating device according to claim 1, wherein, A skin positioning component is sleeved on the outer side of the first sleeve, the lower end of the skin positioning component is located above the observation window, the upper end of the skin positioning component is located below the connecting water pipe, and the lower end of the skin positioning component is telescopically arranged on the inner side of the skin.

6. The laparoscopic working channel creating device according to claim 5, wherein, The skin positioning component includes a second sleeve and a spiral spring piece. The second sleeve is sleeved on the outside of the first sleeve. The second sleeve is rotatable. The first end of the spiral spring piece is arranged at the lower end of the second sleeve, and the second end of the spiral spring piece is arranged on the first sleeve. The spiral spring piece is spirally sleeved on the outside of the first sleeve. When the second sleeve is rotated, the spiral spring piece expands outward and extends toward the inside of the skin.

7. The laparoscopic working channel creating device according to claim 6, wherein, A third sleeve is sleeved outside the second sleeve, and a lower end of the third sleeve is located above the second end of the spiral spring piece and is arranged close to the second end of the spiral spring piece.

8. The laparoscopic working channel creating device according to claim 7, wherein, The side wall of the first sleeve is provided with a positioning ball, and the side wall of the second sleeve is provided with a positioning slot, the positioning slot is sleeved on the outside of the positioning ball, and the positioning slot limits the rotation trajectory of the second sleeve.

9. The laparoscopic working channel creating device according to claim 6, wherein, A limiting member is disposed at the upper end of the second sleeve, and the limiting member is used to limit the rotation of the second sleeve.

10. A laparoscopic working channel creating device according to claim 9, characterized in that, The limiting member includes a limiting rod, and a clearance hole suitable for the limiting rod to pass through is arranged on the side wall of the upper end of the second sleeve, and a limiting surface is arranged on the outer side wall of the upper end of the first sleeve. The limiting rod penetrates into the second sleeve and abuts against the limiting surface to lock the rotation of the second sleeve.

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