Laparoscopic intestinal stent grasper and grasping system

Abstract

A laparoscopic intestinal stent grasper and grasping system, the grasper comprises: an operating component, a rod-shaped component and a grasping component, the grasping component comprises a first grasping arm, a second grasping arm and a push pin, the first grasping arm is shaped and sized to match the intestinal stent, is semicircular and one end of which is connected to one end of the rod-shaped component, the other end of the rod-shaped component is connected to the operating component, the second grasping arm is shaped as an arc smaller than half of the semicircular arc, the second grasping arm is connected to the push pin, and the push pin is accommodated in the rod-shaped component; the operating component comprises a gripping handle and a movable handle suitable for adjusting the movable angle of the first grasping arm; the operating component also comprises a first adjusting device suitable for causing the push pin to displace along the axial direction of the rod-shaped component, or causing the push pin to drive the second grasping arm to rotate along the circumferential direction of the rod-shaped component; the position of the second grasping arm comprises a folded position and an expanded position, in the folded position the grasper can be accommodated in the sleeve of the laparoscope to enter the abdominal cavity of the human body, and in the expanded position the intestinal stent can be grasped. The technical solution of the present invention can realize safe, effective, firm and reliable grasping of the intestinal stent under laparoscopy, and conveniently perform intestinal anastomosis operation using the stent method.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a laparoscopic intestinal stent grasper and a grasping system, which can be used to deliver an intestinal stent and firmly grasp the intestinal stent to perform intestinal anastomosis. Background Art

[0002] Digestive tract anastomosis is an important part of surgical operation, and the quality of its anastomosis directly determines the success of the operation. Once anastomotic leakage occurs, it will lead to abdominal infection, secondary surgery, and even death. Digestive tract anastomosis, especially represented by intestinal-intestinal anastomosis (including small intestine-small intestine anastomosis, small intestine-colon anastomosis, etc.), usually adopts two methods: manual suture anastomosis (hereinafter referred to as manual anastomosis) or stapler anastomosis. Manual anastomosis is the most conventional and traditional surgical anastomosis method. It is completed manually with silk thread or absorbable suture. The operation is cumbersome, time-consuming, and the anastomosis quality is difficult to control. There is a certain incidence of anastomotic leakage, and it is difficult to complete under laparoscopy, which is not suitable for the development trend of minimally invasive surgery. However, this method has low cost and low learning difficulty, and is still widely used in open surgery and economically underdeveloped areas. The stapler anastomosis is to use various surgical staplers to perform digestive tract anastomosis. It is simple to operate, short time-consuming, and reliable anastomosis quality. However, the price of the stapler is relatively high, and there are metal foreign bodies remaining in the body after anastomosis, which limits its scope of application. After gastrointestinal anastomosis is performed using these two methods, the intestinal contents will come into direct contact with the anastomosis, inevitably causing contamination and impact on the anastomosis, which may increase the risk of anastomotic leakage. Once anastomotic leakage occurs, the direct impact of the contents will aggravate the consequences of anastomotic leakage.

[0003] After years of clinical research and innovative inventions, Professor Cai Xiujun's team at the Run Run Shaw Hospital affiliated to Zhejiang University School of Medicine has invented a series of "degradable intestinal anastomosis stents" and pioneered the "suture-free stent method for intestinal anastomosis". The emergence of degradable intestinal anastomosis stents and suture-free stent method for intestinal anastomosis not only solves the defects of manual anastomosis, which is cumbersome, time-consuming, and difficult to control the quality of anastomosis, and the shortcomings of the stapler method, which is expensive and has foreign matter remaining in the body, but also isolates the anastomosis from the intestinal contents through the stent, providing good conditions for the repair of the intestinal anastomosis and further reducing the risk of anastomotic leakage.

[0004] In laparoscopic surgery, surgical instruments such as laparoscopic graspers are usually used to grasp surgical supplies in the abdominal cavity. However, the front opening of the grasper is small and the rotation angle is limited, which is only suitable for grasping smaller objects. For larger surgical supplies such as intestinal anastomosis stents, the grasping ability of traditional laparoscopic graspers is limited, which is manifested as unstable grasping, difficulty in adjusting direction and stent placement, which greatly affects the operation of intestinal stents in laparoscopic surgery, prolongs the operation time, and increases the operation risk.

[0005] Currently, there is no specific laparoscopic grasper for intestinal stents. Summary of the invention

[0006] The problem to be solved by the present invention is how to safely, effectively, firmly and reliably grasp the intestinal stent under laparoscopy and conveniently perform intestinal anastomosis operation using the stent method.

[0007] In order to solve the above problems, the technical solution of the present invention provides a laparoscopic intestinal stent grasper, comprising: an operating component, a rod-shaped component and a grasping component, the grasping component comprising a first grasping arm, a second grasping arm and a push column, the shape and size of the first grasping arm are adapted to the shape and size of the intestinal stent, the first grasping arm is semicircular and its first end is connected to the first end of the rod-shaped component, the second end of the rod-shaped component is connected to the operating component, the shape of the second grasping arm is an arc smaller than half of the semicircular arc, one end of the second grasping arm is connected to the first end of the push column, and the push column is accommodated in the rod-shaped component; the operating component comprises a gripping handle suitable for an operator to hold and a gripping handle suitable for an operator to hold. A movable handle for adjusting the movable angle of the first grasping arm; the operating component also includes a first adjusting device arranged at the second end of the push column, suitable for causing the push column to displace along the axial direction of the rod-shaped component, or causing the push column to drive the second grasping arm to rotate along the circumferential direction of the rod-shaped component; the position of the second grasping arm includes a folded position and an expanded position, in the folded position, the second grasping arm fits in the arc of the first grasping arm, and the expanded position is the position reached by the second grasping arm when driven by the push column to rotate 180 degrees from the folded position; when the second grasping arm is in the folded position, the intestinal stent grasper can be accommodated in the sleeve of the laparoscope.

[0008] Optionally, the operating component further comprises a second adjusting device, adapted to fine-tune the circumferential deflection angle of the first grasping arm along the rod-shaped component.

[0009] Optionally, a gripping claw is provided at the second end of the first gripping arm, and a claw tip of the gripping claw points to the center of the semicircular arc.

[0010] Optionally, the inner wall of the first gripping arm and / or the second gripping arm has a thread.

[0011] Optionally, the arc shape of the second grasping arm is 1 / 4 of the semicircular arc shape of the first grasping arm.

[0012] Optionally, the chord length of the semicircular arc of the first grasping arm is 3.0-4.0 cm, and the chord height of the semicircular arc is 1.2-2.0 cm.

[0013] Optionally, the laparoscopic intestinal stent grasper further comprises a locking component adapted to lock the push column from being displaced along the axial direction of the rod-shaped component, and the locking component is disposed on the rod-shaped component or the operating component.

[0014] Optionally, the second gripping arm and the push post are integrally formed.

[0015] To solve the above problems, the technical solution of the present invention also provides a laparoscopic intestinal stent grasping system, comprising: a laparoscope, an intestinal stent and the above-mentioned laparoscopic intestinal stent grasper; the middle part of the intestinal stent is tubular, and the two ends are gradually enlarged trumpet-shaped openings; the sleeve of the laparoscope is suitable for accommodating the intestinal stent and the laparoscopic intestinal stent grasper, and placing them into the human abdominal cavity.

[0016] Optionally, a gripping claw is provided at the second end of the first gripping arm, and a limiting groove matching with the gripping claw is provided at the middle portion of the intestinal stent.

[0017] Optionally, the laparoscopic intestinal stent grasping system further includes a laparoscopic surgical grasping forceps, which are suitable for assisting in placing the middle portion of the intestinal stent into the grasping position of the laparoscopic intestinal stent grasper.

[0018] Compared with the prior art, the technical solution of the present invention has at least the following advantages:

[0019] 1. By matching the first grasping arm that matches the shape and size of the intestinal stent and is in a semicircular shape with the second grasping arm that can be linearly adjusted and rotationally adjusted under the drive of the push column, the second grasping arm is rotated and adjusted to the retracted position, so that the intestinal stent grasper can be accommodated in the laparoscope sleeve and enter the human abdominal cavity, and the second grasping arm is rotated and adjusted to the expanded position to grasp the intestinal stent together with the first grasping arm. It can be specially used to grasp the intestinal stent series products (intestinal anastomosis stent, intestinal diversion stent), and the grasping is safe, effective, firm and reliable.

[0020] 2. The second grasping arm is linearly adjusted by the push column, so that the length of the extended rod-shaped component can be adjusted according to the size of the intestinal stent, and intestinal stents of various sizes can be firmly and stably grasped, so the application range is relatively wide.

[0021] 3. The operation of the second adjustment device (implemented by rotating the knob) can be used to fine-tune the circumferential deflection angle of the first grasping arm along the rod-shaped component. In this way, the anastomotic angle can be adjusted in a small range when grasping the intestinal stent, which facilitates the placement of the intestinal stent into the intestine under laparoscopy without the need to frequently adjust the placement angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1is a schematic structural diagram of a laparoscopic intestinal stent grasper according to an embodiment of the present invention;

[0023] Figure 2 is a schematic structural diagram of an intestinal stent according to an embodiment of the present invention;

[0024] Figure 3 is a schematic diagram of an intestinal stent applied to an intestinal tract in an embodiment of the present invention;

[0025] Figure 4 is a schematic diagram of the second grasping arm in a retracted position in an embodiment of the present invention;

[0026] Figure 5 is a schematic diagram of an embodiment of the present invention in which the second grasping arm is in an expanded position and cooperates with the first grasping arm to grasp the intestinal stent;

[0027] Figure 6 It is a schematic diagram of setting a limiting groove on the intestinal stent in an embodiment of the present invention. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0029] In the description of the present invention, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present invention, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] In the prior art, laparoscopic graspers and other surgical instruments are usually used to grasp surgical supplies in the abdominal cavity during laparoscopic surgery. Traditional laparoscopic graspers are usually composed of a head, a rod or a soft catheter and a handle. The operation of the head is transmitted and controlled by the handle. However, traditional laparoscopic graspers are more commonly used to clamp human tissues. The front end opening of the graspers is small and the rotation angle is limited. If they are used to grasp an intestinal stent, they cannot firmly grasp the stent, making it inconvenient to perform anastomosis operations.

[0034] In view of the above problems, the inventor of the present application considered improving the jaws of the laparoscopic grasping forceps to match the shape and size of the intestinal stent, so that the grasping can be more firm and reliable. However, if only the two clamp arms of the traditional laparoscopic grasping forceps are designed to be consistent with the shape of the intestinal stent, but the traditional "scissor-type" grasping method is still used to grasp the intestinal stent, the overall size of the grasping forceps will be increased, making it difficult to enter the laparoscope sleeve, and it is impossible to achieve the grasping operation of the intestinal stent under laparoscopy. Therefore, the inventor of the present application further considered improving the "grasping method" to make one clamp arm of the grasping forceps adapt to the shape and size of the intestinal stent, and still follow the "scissor-type" grasping method, while the other clamp arm is reduced in size and adopts an auxiliary grasping method of linear motion, and the clamp arm can be stored and unfolded through rotational motion. In the stored state, it has the conditions to enter the laparoscope sleeve. After reaching the human abdominal cavity, the clamp arm can be unfolded and cooperated with the other clamp arm to grasp the intestinal stent, thereby truly realizing the stable grasping operation of the intestinal stent under laparoscopy.

[0035] Based on the above design concept, the technical solution of the present invention provides a laparoscopic intestinal anastomosis stent grasper, which can safely, effectively, firmly and reliably grasp the intestinal stent under laparoscopy and conveniently perform intestinal anastomosis operations using the stent method.

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0037] like Figure 1 As shown, an embodiment of the present invention provides a laparoscopic intestinal stent grasper, which includes: an operating component 1, a rod-shaped component 3 and a grasping component 2, wherein the grasping component 2 includes a first grasping arm 21, a second grasping arm 22 and a push column 23, the shape and size of the first grasping arm 21 are adapted to the shape and size of the intestinal stent, the first grasping arm 21 is semicircular and its first end is connected to the first end of the rod-shaped component 3, the second end of the rod-shaped component 3 is connected to the operating component 1, and the shape of the second grasping arm 22 is an arc that is smaller than half of the semicircular arc (i.e., smaller than the entire arc). shaped 1 / 4 arc), one end of the second gripping arm 22 is connected to the first end of the push post 23, and the push post 23 is accommodated in the rod-shaped component 3; the operating component 1 includes a gripping handle 11 suitable for the operator to hold and a movable handle 12 suitable for adjusting the movable angle of the first gripping arm 21; the operating component 1 also includes a first adjustment device 13 provided at the second end of the push post 23, suitable for causing the push post 23 to displace along the axial direction of the rod-shaped component 3, or causing the push post 23 to drive the second gripping arm 22 to rotate along the circumferential direction of the rod-shaped component 3. In this embodiment, the rod-shaped component 3 can be a hollow long rod, and the push post 23 is located inside the hollow long rod.

[0038] like Figure 2 As shown, the intestinal stent 5, which is the object of operation of the laparoscopic intestinal stent grasper described in this embodiment, has a basic structure including a tubular stent middle portion 51 and stent ends 52a and 52b located on both sides of the stent middle portion 51. The shapes of the stent ends 52a and 52b are both gradually enlarged trumpet-shaped openings. The intestinal stent 5 is usually used for digestive tract anastomosis, especially represented by intestinal-intestinal anastomosis (including small intestine-small intestine anastomosis, small intestine-colon anastomosis, etc.). The implementation method of the intestinal stent 5 in the human digestive tract is as follows: Figure 3 As shown, during intestinal anastomosis surgery, the stent end 52a and the stent end 52b need to be placed in the two sections of the intestine to be anastomosed respectively. This process requires the middle part 51 of the stent to be firmly grasped, and it may also be necessary to adjust the angle of the grasped intestinal stent. The laparoscopic intestinal stent grasper provided in this embodiment can achieve a more firm and reliable grasping.

[0039] In this embodiment, the position of the second grasping arm 22 includes a folded position and an expanded position. In the folded position, the second grasping arm 22 matches the arc of the first grasping arm 21, and the expanded position is the position reached by the second grasping arm 22 when driven by the push column 23 to rotate 180 degrees from the folded position; when the second grasping arm 22 is in the folded position, the intestinal stent grasper can be accommodated in the sleeve of the laparoscope.

[0040] For the folded position and the unfolded position of the second gripping arm 22, the Figure 4 and Figure 5 Understand. Figure 4 Schematic diagram of the second gripping arm 22 in the retracted position. Figure 4 As shown, the second grasping arm 22 is connected to the push column 23, and is similar in shape to the first grasping arm. The second grasping arm 22 is also arc-shaped, and its shape is consistent with the semicircular arc of the first grasping arm 21. The only difference is that the length of the arc is shorter, which is only half of the semicircular arc of the first grasping arm 21 or even smaller. This is because if the arc length of the second grasping arm 22 is too long, it will be difficult to accommodate the intestinal stent into the grasping position after the second grasping arm 22 is subsequently transformed into the expanded position. Of course, the arc length of the second grasping arm 22 cannot be too short, otherwise it is difficult to effectively grasp the intestinal stent, because the intestinal stent may fall out of the grasping position. Therefore, in actual implementation, after experimental testing by the inventor, when the arc length of the second grasping arm 22 is 1 / 4 to 1 / 2 of the semicircular arc of the first grasping arm (that is, 1 / 8 to 1 / 4 of the circle where the semicircular arc is located), a better grasping effect can be achieved. In this embodiment, Figure 4 As shown, the arc length of the second gripping arm 22 is about 1 / 4 of the semicircular arc length of the first gripping arm. In other embodiments, appropriate adjustments can also be made on this basis. Figure 4 It can also be seen that the arc of the second grasping arm 22 can also be understood as being equivalent to cutting off 1 / 4 from one end of the semicircular arc of the first grasping arm 21, and the initial position of the second grasping arm 22 is almost in close contact with the arc of the first grasping arm 21, so that the second grasping arm 22 will not increase the overall width of the intestinal stent grasper, thereby ensuring that the maximum width of the entire intestinal stent grasper is only the distance from the semicircular arc of the first grasping arm 21 from the arc apex to the chord, which can be inserted into the laparoscope sheath to achieve the operation of grasping the intestinal stent under laparoscopy.

[0041] Those skilled in the art know that since the size range of the intestinal stent needs to be adapted to the size of the human intestine, Figure 2The diameter of the tubular middle portion 51 of the intestinal stent 5 shown is generally 3 cm at most, so the chord length of the semicircular arc of the first grasping arm 21 needs to be at least slightly greater than or equal to 3 cm to accommodate the middle portion 51 of the stent and grasp it effectively. However, the commonly used lumen diameters of laparoscopic cannulas include 5mm, 10mm, 15mm, 20mm and other specifications. If there are few laparoscopic cannulas with lumen diameters exceeding 2cm in actual situations, this requires that the width of the laparoscopic intestinal stent grasper cannot exceed 2cm. Therefore, the inventor of the present application believes that only when the second grasping arm 22 is in the retracted position, it is possible to place the intestinal stent grasper in the laparoscopic cannula. The reason is that when the chord length of the semicircular arc of the first grasping arm 21 needs to be at least slightly greater than or equal to 3cm, the maximum chord height of the semicircular arc should be 1.5cm, which is suitable for laparoscopic cannulas with a lumen diameter of 15mm. If the second grasping arm 22 causes the overall width of the intestinal stent grasper to increase, it will inevitably be difficult to extend into / out of the commonly used laparoscopic cannula. Of course, in actual implementation, according to actual needs, laparoscopic cannulas with larger lumen diameters can also be selected or specially made, not limited to the above-mentioned conventional specifications.

[0042] Based on the above analysis, in this embodiment, the chord length of the semicircular arc of the first grasping arm 21 is determined to be 3.0cm to 4.0cm, and the chord height of the semicircular arc is determined to be 1.2 to 2.0cm. If the chord length of the semicircular arc of the first grasping arm 21 is specifically 3.2cm, and the chord height of the semicircular arc (the distance from the vertex of the arc to the chord) is specifically 1.2cm, the overall maximum width of the intestinal stent grasper is 1.2cm, which can be inserted into / withdrawn from the laparoscopic sleeve of 15mm specification, and the chord length of the semicircular arc of 3.2cm can also include the middle part 51 of the intestinal stent 5 and effectively grasp it. From the above examples, it can be seen that the "semicircular arc" referred to in the embodiments of the present invention is not necessarily limited to the standard semicircular arc, and can also be an arc with an arc length slightly smaller than the arc length of the standard semicircular arc (for example, the aforementioned chord length is 3.2cm, the chord height is 1.2cm, and the chord height of the standard semicircular arc is 1.6cm), which does not affect the grasping of the intestinal stent. In addition, in actual implementation, since the thickness of the first grasping arm itself needs to be considered, the chord length of 3.2 cm in the above example is the size specification after including the thickness of the first grasping arm, and the inner chord length of the semicircular arc matches the diameter of the middle part of the intestinal stent.

[0043] In this embodiment, the inner wall of the first grasping arm 21 also has a thread 24, so that a better fixing effect can be achieved for the intestinal stent.

[0044] Figure 5 is a schematic diagram of the second gripping arm 22 in the deployed position, combined with Figure 1 and Figure 5 , through the first adjustment device 13, the push column 23 drives the second grasping arm 22 to rotate along the circumference of the rod-shaped component 3, so that it can reach the unfolded position by rotating 180 degrees from the folded position. At this time, the second grasping arm 22 is once again on the same plane as the first grasping arm 21, and the two are opposite to each other. The opening formed between the second grasping arm 22 and the first grasping arm 21 can accommodate the middle part 51 of the intestinal stent 5 to enter the grasping position. Then, by pulling the movable handle 12, the movable angle of the first grasping arm 21 is adjusted to achieve the grasping and releasing of the intestinal stent. In specific implementation, the movable angle of the first grasping arm 21 can be set according to actual needs, for example, 30 degrees to 60 degrees, all to ensure that the middle part 51 of the intestinal stent 5 can be accommodated to enter the grasping position. It should be noted that the corresponding implementation of the operation of adjusting the movable angle of the first grasping arm 21 by the movable handle 12 can refer to the implementation method of the laparoscopic surgical grasping forceps using "scissor-type grasping" in the prior art (that is, controlling one of the forceps to clamp toward the other forceps by pulling the movable handle), so it will not be introduced in detail here.

[0045] If the size of the intestinal stent is small, the second grasping arm 22 is linearly adjusted by the push column 23, so that the length of the corresponding extended rod-shaped component can be adjusted according to the size of the intestinal stent, and intestinal stents of different sizes can be firmly and stably grasped, so the application range is relatively wide.

[0046] In addition, if Figure 1 As shown, the laparoscopic intestinal stent grasper in this embodiment further includes a locking component 4 suitable for locking the displacement of the push column 23 along the axial direction of the rod-shaped component 3, and the locking component 4 is arranged on the rod-shaped component or the operating component. In actual implementation, the locking component 4 can be implemented in the form of a screw with a knob, and by tightening the screw, it can be ensured that the push column 23 no longer moves or rotates at will, thereby achieving the function of locking the push column 23 to ensure the reliability of the grasping operation.

[0047] In actual implementation, the second gripping arm 22 and the push post 23 may be integrally formed, so that the second gripping arm 22 is more stable, thereby ensuring a certain gripping effect. However, if the second gripping arm 22 and the push post 23 are separately arranged, a second gripping arm 22 of a corresponding size may be installed according to actual conditions (such as the size of the intestinal stent), thereby ensuring a more targeted gripping.

[0048] In this embodiment, a gripping claw 21a is provided at the second end of the first gripping arm 21, and the claw tip of the gripping claw 21a points to the center of the semicircular arc. By designing the gripping claw at the end of the first gripping arm 21, the first gripping arm 21 forms a semicircular claw structure, which can better generate gripping force on the intestinal stent and ensure the firmness of gripping. In addition, if corresponding improvements are made to the intestinal stent, for example, one or more limiting grooves that match the gripping claw 21a are provided around the tubular middle part of the intestinal stent, so that when the first gripping arm 21 grips the middle part of the intestinal stent, the gripping claw 21a can be embedded in the limiting groove, thereby preventing the intestinal stent from falling out, further improving the reliability of gripping.

[0049] In this embodiment, the operating component 3 further includes a second adjusting device 14, which is suitable for fine-tuning the angle of the first grasping arm 21 deflected along the circumferential direction of the rod-shaped component 2. In actual implementation, the operating component 3 is specifically in the form of a handle, which is similar to the shape of ordinary laparoscopic grasping forceps. The handle can be divided into a fixed end and a movable end. The fixed end is Figure 1 The grip handle 11 shown in the figure has a movable end. Figure 1 The movable handle 12 shown, the second adjustment device 14 can be implemented by rotating the knob. Through the operation of the rotating knob, it can be used to fine-tune the angle of the circumferential deflection of the first grasping arm 21 along the rod-shaped component 2 (laterally perpendicular to the rod-shaped component 2), and accordingly change the angle of the grasped intestinal stent, so as to facilitate the operation of inserting the intestinal stent into the intestinal tube. In actual implementation, the angle range of the fine-tuning of the circumferential deflection of the first grasping arm 21 along the rod-shaped component 2 can be 0 to 60 degrees, so as to ensure that the grasped intestinal stent can be smoothly inserted into the intestinal tube after adjusting the corresponding angle. The lateral angle of the semicircular claw of the first grasping arm 21 can be adjusted, and the angle of the intestinal stent can be adjusted. When the stent is placed in the intestine, this will bring convenience to the operation and avoid the problem of frequently adjusting the angle of the intestinal stent.

[0050] It should be noted that the locking component 4 in this embodiment only has a locking effect on the displacement or rotation of the push-down column 23 adjusted by the first adjusting device 13, but does not affect the adjustment of the circumferential deflection angle of the first gripping arm 21 along the rod-shaped component 2 by the second adjusting device 14.

[0051] An embodiment of the present invention also provides a laparoscopic intestinal stent grasping system, comprising: a laparoscope, an intestinal stent and the above-mentioned laparoscopic intestinal stent grasper; the middle part of the intestinal stent is tubular, and the two ends are gradually enlarged trumpet-shaped openings; the sleeve of the laparoscope is suitable for accommodating the intestinal stent and the laparoscopic intestinal stent grasper, and inserting them into the human abdominal cavity.

[0052] In this embodiment, when the second end of the first grasping arm 21 is provided with a grasping claw 21a, the middle portion 51 of the intestinal stent 5 may also be provided with a limiting groove 53 that matches the grasping claw 21a. Figure 6 As shown, the number of the limiting grooves 53 on the middle part 51 of the intestinal stent 5 can be multiple, for example, one or more circles around the circumference of the middle part of the intestinal stent, that is, a limiting groove 53 is opened at a certain distance in the circumference of one or more sections of the tubular middle part 51 of the intestinal stent, so that the grasping claw 21 of the first grasping arm 21 can be engaged with the limiting groove 53, thereby better realizing the grasping stability of the intestinal stent 5.

[0053] In a specific implementation, the laparoscopic intestinal stent grasping system may further include a laparoscopic surgical grasping forceps, which is suitable for assisting in placing the middle portion of the intestinal stent into the grasping position of the laparoscopic intestinal stent grasper.

[0054] The following describes the actual operation process of the above-mentioned laparoscopic intestinal stent grasping system:

[0055] In the scenario where the intestinal stent needs to be applied, such as intestinal anastomosis, after the intestinal stent is placed in the abdominal cavity, the laparoscopic intestinal stent grasper provided in this embodiment is placed in the abdominal cavity through the laparoscopic cannula, and with the assistance of ordinary laparoscopic surgical grasping forceps, the intestinal stent is placed horizontally into the first grasping arm in this embodiment (the specific structural form is a semicircular arc claw), and the trumpets at both ends of the intestinal stent are facing both sides. Then press the movable handle and adjust the regulator of the linear push rod (the first adjusting device in this embodiment), and the second grasping arm cooperates with the first grasping arm to support the stent body (i.e., the middle part of the intestinal stent), and the tightness is just enough to prevent the intestinal stent from shaking. At this time, the intestinal stent grasper can be used to place the intestinal stent into the intestinal stent. The trumpet at one end of the intestinal stent is inserted into one end of the intestine, and the rotating knob on the operating handle (the second adjusting device in this embodiment) can be used to adjust the angle of the intestinal stent in a small range to facilitate insertion into the intestine. The trumpet at the other end of the intestinal stent is inserted into the other end of the intestine in the same way. Pull the two ends of the intestines toward the center of the intestinal stent and press them together, adjust the position of the intestinal stent, then loosen the movable handle, release the held intestinal stent, and complete the subsequent intestinal anastomosis operation (i.e. stent-based intestinal anastomosis and diversion, etc., which will not be described in detail here).

[0056] Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A laparoscopic intestinal stent grasper, characterized in that: include: An operating component, a rod-shaped component and a grasping component, wherein the grasping component comprises a first grasping arm, a second grasping arm and a push post, the shape and size of the first grasping arm are adapted to the shape and size of the intestinal stent, the first grasping arm is in a semicircular arc shape and the first end thereof is connected to the first end of the rod-shaped component, the second end of the rod-shaped component is connected to the operating component, the shape of the second grasping arm is an arc smaller than half of the semicircular arc, one end of the second grasping arm is connected to the first end of the push post, and the push post is accommodated in the rod-shaped component; the operating component comprises a grasping handle suitable for an operator to grasp and a movable handle suitable for adjusting the movable angle of the first grasping arm; the operating component further comprises a first adjusting device arranged at the second end of the push post, suitable for causing the push post to displace along the axial direction of the rod-shaped component, or causing the push post to drive the second grasping arm to rotate along the circumferential direction of the rod-shaped component; The position of the second gripping arm includes a folded position and an extended position. In the folded position, the second gripping arm matches the arc of the first gripping arm. The extended position is the position reached by the second gripping arm rotating 180 degrees from the folded position driven by the push column. When the second grasping arm is in the retracted position, the intestinal stent grasper can be accommodated in the sleeve of the laparoscope.

2. The laparoscopic intestinal stent grasper according to claim 1, characterized in that: The operating component further comprises a second adjusting device adapted to finely adjust a circumferential deflection angle of the first grasping arm along the rod-shaped component.

3. The laparoscopic intestinal stent grasper according to claim 1, characterized in that: A gripping claw is disposed at the second end of the first gripping arm, and a claw tip of the gripping claw points to the center of the semicircular arc.

4. The laparoscopic intestinal stent grasper according to claim 1, characterized in that: The inner wall of the first gripping arm and / or the second gripping arm has a thread.

5. The laparoscopic intestinal stent grasper according to claim 1, characterized in that: The arc shape of the second grasping arm is 1 / 4 of the semicircular arc shape of the first grasping arm.

6. The laparoscopic intestinal stent grasper according to claim 1, characterized in that: The chord length of the semicircular arc of the first grasping arm is 3.0-4.0 cm, and the chord height of the semicircular arc is 1.2-2.0 cm.

7. The laparoscopic intestinal stent grasper according to claim 1, characterized in that: It also includes a locking component suitable for locking the push column to prevent it from being displaced along the axial direction of the rod-shaped component. The locking component is arranged on the rod-shaped component or the operating component.

8. The laparoscopic intestinal stent grasper according to claim 1, characterized in that: The second gripping arm is integrally formed with the push post.

9. A laparoscopic intestinal stent grasping system, characterized in that: include: A laparoscope, an intestinal stent, and a laparoscopic intestinal stent grasper as described in any one of claims 1 to 8; the middle portion of the intestinal stent is tubular, with gradually enlarging trumpet-shaped openings at both ends; the sleeve of the laparoscope is suitable for accommodating the intestinal stent and the laparoscopic intestinal stent grasper, and inserting them into the human abdominal cavity.

10. The laparoscopic intestinal stent grasping system according to claim 9, characterized in that: A gripping claw is disposed at the second end of the first gripping arm, and a limiting groove matched with the gripping claw is disposed in the middle of the intestinal stent.

Images