Laparoscopic surgery fetching bag with fascia expansion function

Abstract

The invention provides a laparoscopic surgery fetching bag with a fascia expansion function, and relates to the technical field of laparoscopic surgery instruments.The laparoscopic surgery fetching bag comprises a main pipe arranged on the outer side of the fetching bag in a sleeving mode, at least two guide shells, a connecting rod and a traction rod, and the at least two guide shells are located on the two opposite sides of the main pipe respectively; the lower end of the main pipe is rotationally connected with the guide shell, the interior of the guide shell is rotationally connected with one end of the connecting rod, and the other end of the connecting rod is connected with the traction rod. The traction rod is installed on the outer side of the main pipe and slides in the central axis direction of the main pipe. When the traction rod slides towards the side away from the guide shell along the main pipe, the connecting rod drives the guide shell to unfold, the expansion range of a muscle layer incision can be accurately controlled, the problem that a traditional fetching bag is difficult to penetrate through the incision due to expansion is solved, meanwhile, when the fetching bag is closed, the storage cavity formed by the guide shell can tightly wrap the fetching bag body, and the fetching bag is convenient to use. And the guide shell can be directly taken out, so that the friction damage of the fetching bag to the muscle layer is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of laparoscopic surgical instruments, and in particular to a laparoscopic surgical retrieval bag with a fascia expansion function. Background Art

[0002] With the rapid development of minimally invasive surgical techniques, laparoscopic surgery has been widely used in urology, gynecology, general surgery and other fields due to its advantages of less trauma and faster recovery. Among them, the retrieval bag is a key device for transferring tissues, organs or resected objects during surgery. The convenience and safety of the retrieval process directly affects the surgical effect.

[0003] However, as far as the current traditional laparoscopic surgical retrieval bags are concerned, after loading a large specimen, it is necessary to use instruments such as expansion forceps to forcibly open the muscle layer incision and forcibly pull out the retrieval bag. This process can easily cause the bag to tear, resulting in leakage of contents (such as blood, tissue fragments), increasing the risk of abdominal cavity contamination and tumor dissemination, and does not take into account the morphological changes of the specimen after expansion. The bag size is fixed and the shape is single, which is difficult to adapt to incisions of different sizes or tissue conditions. Clinical needs urgently require a laparoscopic retrieval bag that can safely expand the incision and control the retrieval process. Summary of the invention

[0004] The present invention achieves the above technical objectives by combining the guide shell linkage expansion mechanism with the threaded transmission system, and provides a structurally innovative and easy-to-operate solution for laparoscopic surgery.

[0005] The present invention provides a laparoscopic surgical retrieval bag with a fascia expansion function, which specifically comprises: a main tube mounted on the outside of the retrieval bag, at least two guide shells, a connecting rod and a pulling rod, wherein at least two of the guide shells are respectively located on two opposite sides of the main tube; the lower end of the main tube is rotatably connected to the guide shell, and the inside of the guide shell is rotatably connected to one end of the connecting rod, and the other end of the connecting rod is connected to the pulling rod; the pulling rod is installed on the outside of the main tube and slides along the central axis of the main tube; when the pulling rod slides along the main tube to a side away from the guide shell, the connecting rod drives the guide shell to unfold.

[0006] Preferably, after at least two of the guide shells are closed to each other, a closed storage cavity is formed inside.

[0007] Preferably, an annular protrusion is provided in the middle of the main pipe, and a longitudinal through hole is provided inside the annular protrusion of the main pipe; the upper end of the pulling rod is a sliding rod, and the sliding rod of the pulling rod is inserted into the through hole of the main pipe.

[0008] Preferably, a third connection point is provided at the upper end of the guide shell, and a fourth connection point is provided in the middle of the side of the guide shell pointing to the main pipe; the fourth connection point is rotatably connected to one end of the connecting rod; the outer side of the annular protrusion of the main pipe is provided with first connection points corresponding to the number of guide shells; the third connection point is rotatably connected to the first connection point; the end of the pulling rod close to the main body of the picking bag is provided with a second connection point corresponding to the number of guide shells, and the second connection point is connected to the other end of the connecting rod.

[0009] Preferably, the end of the pulling rod close to the bag body is fixedly connected to a first control member; the first control member is sleeved on the outside of the main pipe, and a handle is provided at the end of the first control member away from the bag body; the first control member slides along the main pipe.

[0010] Preferably, a connecting groove is provided on the outer side of one end of the main pipe away from the picking bag body; an operating handle is mounted on the outer side of the connecting groove, and the operating handle rotates around the central axis of the main pipe; a threaded hole is provided inside the end of the operating handle close to the picking bag body; a second control component is fixedly connected to one end of the pulling rod away from the picking bag body, and a threaded section is provided on the outer side of the end of the second control component away from the picking bag body; the threaded section of the second control component is inserted into the threaded hole of the operating handle.

[0011] Preferably, a mounting hole is provided at the upper end of the second control member, and an extension rod is inserted into the mounting hole.

[0012] Preferably, the main pipe is a double-layer pipe, and the inner and outer layers of the main pipe can slide and rotate relative to each other.

[0013] Preferably, a limiting groove is provided on the outer side of the guide shell.

[0014] Preferably, the device further comprises a bag body; a bag control rod is disposed at the upper end of the bag body; and the bag control rod is inserted into the interior of the main pipe.

[0015] Beneficial Effects

[0016] In the present invention: 1. The guide shell is driven to expand by the pulling rod, which can accurately control the expansion range of the muscle layer incision, avoiding the problem that the traditional bag is difficult to pass through the muscle layer incision due to expansion. When closed, the storage cavity formed by the guide shell can tightly wrap the bag body, and the bag can be taken out at the same time as the guide shell, reducing friction damage to the muscle layer; 2. The thread-screw hole connection method is used to control the displacement of the traction rod to achieve step-by-step adjustment of the expansion range, while the self-locking structure prevents slippage. The limit groove design allows the device to self-lock with the muscle layer, reducing the risk of slippage during surgery; 3. The double-layer tube structure of the main tube supports independent disassembly of the inner and outer layers, which is convenient for continuing the surgical operation after taking out the object; the symmetrical / equiangular arrangement design of the guide shell is suitable for different incision sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0018] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0019] In the attached picture: Figure 1 A schematic diagram of the three-dimensional structure of a laparoscopic surgery retrieval bag according to an embodiment of the present invention is shown.

[0020] Figure 2 An overall exploded view of a laparoscopic surgery retrieval bag according to an embodiment of the present invention is shown.

[0021] Figure 3 The figure shows an assembly diagram of a main tube and a pulling tube of a laparoscopic surgery retrieval bag according to an embodiment of the present invention.

[0022] Figure 4 The figure shows an assembly diagram of a guide shell and a pulling rod of a laparoscopic surgery retrieval bag according to an embodiment of the present invention.

[0023] Figure 5 The laparoscopic surgery bag according to an embodiment of the present invention is shown. Figure 4 A local enlarged schematic diagram of point A is shown.

[0024] Figure 6 The laparoscopic surgery bag according to an embodiment of the present invention is shown. Figure 4 A local enlarged schematic diagram of point B is shown.

[0025] Figure 7 A front view of a guide housing of a laparoscopic surgical retrieval bag according to an embodiment of the present invention is shown.

[0026] Figure 8 An assembly diagram of a second control component of a laparoscopic surgery retrieval bag according to another embodiment of the present invention is shown.

[0027] Fig. 9 A schematic diagram showing an open state of a guide shell of a laparoscopic surgery retrieval bag according to another embodiment of the present invention is shown.

[0028] Fig.10 An assembly diagram of a retrieval bag body for a laparoscopic surgery retrieval bag according to another embodiment of the present invention is shown.

[0029] 101. main pipe; 102. first connection point; 103. connection slot; 201, pulling rod; 202, second connection point; 203, connecting rod; 204, first control member; 205, second control member; 206, operating handle; 207, mounting hole; 301, guide housing; 302, third connection point; 303, fourth connection point; 304, limiting groove; 4. Extension rod; 5. The main body of the retrieval bag; 501. The control lever of the retrieval bag. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0031] In this document, “exemplary” means “serving as an example, instance or illustration”, and any diagram or implementation described in this document as “exemplary” should not be interpreted as a more preferred or more advantageous technical solution.

[0032] In order to simplify the drawings, only the parts related to the present application are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked.

[0033] In this document, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance; unless otherwise specified or explained, the term "plurality" refers to two or more; the terms "connected" and "fixed" should be understood in a broad sense, for example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] Example: Please refer to Figures 1 to 10 : The present invention provides a laparoscopic surgical retrieval bag with a fascia expansion function, comprising: a main tube 101 mounted on the outside of the retrieval bag, at least two guide shells 301, a connecting rod 203 and a pulling rod 201, wherein the at least two guide shells 301 are respectively located on opposite sides of the main tube 101; the lower end of the main tube 101 is rotatably connected to the guide shell 301, and the inside of the guide shell 301 is rotatably connected to one end of the connecting rod 203, and the other end of the connecting rod 203 is connected to the pulling rod 201; the pulling rod 201 is installed on the outside of the main tube 101 and slides along the central axis direction of the main tube 101; when the pulling rod 201 slides along the main tube 101 to the side away from the guide shell 301, the connecting rod 203 drives the guide shell 301 to expand; Figure 1 and Figure 2 As shown, the specific position of the guide housing 301 is as follows: if the number of guide housings 301 is the minimum, i.e., two, the two guide housings 301 are symmetrically installed along the main pipe 101; if the number of guide housings 301 is three, the three guide housings 301 are arranged equiangularly along the cross-sectional direction of the main pipe 101, and so on; the longitudinal direction in this application refers to the axial direction of the main pipe 101, and the direction perpendicular to the axial direction of the main pipe 101 is the transverse direction; in one embodiment provided in this application, when the pulling rod 201 slides longitudinally along the main pipe 101 and moves away from the guide housing 301, since there is a connecting rod 203 between the pulling rod 201 and the guide housing 301, and the length of the connecting rod 203 is fixed, the connection between the pulling rod 201 and the connecting rod 203 and the guide housing 301 is As the distance between the shell 301 and the main tube 101 decreases, the connecting rod 203 will extend laterally, thereby pushing the guide shell 301, causing the guide shell 301 to rotate with the connection between the guide shell 301 and the main tube 101 as the rotation center, and the bottoms of the two guide shells 301 move away from each other, causing the two guide shells 301 to unfold. The above change in positional relationship occurs when the device is inserted into the patient's muscle layer incision, which is reflected in the fact that the patient's muscle layer incision is stretched and expanded by the unfolded guide shell 301. At this time, after the retrieval bag body 5 enters the patient's body through the main tube 101 and takes out the target object, even if the retrieval bag body 5 is swollen due to the storage of the target object, it can also pass smoothly through the expanded muscle layer incision of the guide shell 301.

[0035] Among them, Figure 1 As shown, after at least two guide shells 301 are closed to each other, a closed storage cavity is formed inside; after the picking bag body 5 expands after receiving the target object, the picking bag body 5 can be retracted into the storage cavity formed inside the guide shell 301, and the pulling rod 201 is operated in reverse to close the guide shell 301, wrap the picking bag body 5 tightly, and take out the device as a whole. By operating in the above manner, the contact between the uneven outer wall of the picking bag body 5 after receiving the target object and the muscle layer is replaced by the contact between the smooth outer wall of the guide shell 301 and the muscle layer, which facilitates the removal of the picking bag body 5.

[0036] Among them, Figure 3 As shown, an annular protrusion is provided in the middle of the main tube 101, and a longitudinal through hole is opened inside the annular protrusion of the main tube 101; the upper end of the pulling rod 201 is a sliding rod, and the sliding rod of the pulling rod 201 is inserted into the through hole of the main tube 101; through the above structure, the pulling rod 201 can slide along the main tube 101 while ensuring that the lower end of the pulling rod 201 is below the annular protrusion of the main tube 101. Through this structure, when the lower end of the pulling rod 201 is close to the annular protrusion of the main tube 101, the connecting rod 203 drives the guide shell 301 to expand outward.

[0037] Among them, Figure 4 , Figure 5 and Figure 6 As shown, a third connection point 302 is provided at the upper end of the guide housing 301, and a fourth connection point 303 is provided at the middle of the side of the guide housing 301 pointing to the main pipe 101; the fourth connection point 303 is rotatably connected to one end of the connecting rod 203; the outer side of the annular protrusion of the main pipe 101 is provided with first connection points 102 corresponding to the number of the guide housing 301; the third connection point 302 is rotatably connected to the first connection point 102; the end of the pulling rod 201 close to the taking bag body 5 is provided with second connection points 202 corresponding to the number of the guide housing 301, and the second connection points 202 and the connecting rod 203 are connected. The other end is connected; the first connection point 102, the second connection point 202, the third connection point 302 and the fourth connection point 303 are collectively referred to as connection points below. The connection points in the present device can generally be selected by connecting holes and shafts, and there can be one-way damping between the hole and the shaft to enable the guide shell 301 to fix the current angle after it is unfolded to a certain angle and not to reclose under the action of external force. Of course, in some embodiments of the present application, the connection point can adopt an ordinary hinge structure to avoid the overall diameter of the guide shell 301 being larger due to the overly complicated structure of the connection point, which affects the clinical use of the present device.

[0038] Among them, Figure 3 and Figure 4 As shown, the end of the pulling rod 201 close to the picking bag body 5 is fixedly connected to the first control component 204; the first control component 204 is sleeved on the outside of the main pipe 101, and the end of the first control component 204 away from the picking bag body 5 is provided with a handle; the first control component 204 slides along the main pipe 101; in this embodiment, the first control component 204 is an extension of the pulling rod 201, and is used by medical staff to operate the switch of the guide shell 301; in this embodiment, the connection point is preferably a hole-shaft connection with one-way damping.

[0039] Among them, Figure 8 , Fig. 9 and Fig.10As shown, a connecting groove 103 is provided on the outer side of one end of the main pipe 101 away from the bag body 5; an operating handle 206 is sleeved on the outer side of the connecting groove 103, and the operating handle 206 rotates with the central axis of the main pipe 101 as the rotation center; a threaded hole is provided inside the end of the operating handle 206 close to the bag body 5; a second control member 205 is fixedly connected to the end of the pulling rod 201 away from the bag body 5, and a threaded section is provided on the outer side of the end of the second control member 205 away from the bag body 5; the threaded section of the second control member 205 is inserted into the threaded hole of the operating handle 206; the connecting groove 103 limits the longitudinal freedom of the operating handle 206, so that the operating handle 206 can only be moved in the direction of the main pipe 101 The guide housing 301 is rotated around the central axis of the guide housing 301. In the present embodiment, the depth of the threaded hole of the operating handle 206 is greater than the length of the threaded section of the second control member 205, so that the second control member 205 has a longer displacement distance, thereby ensuring the expansion width of the guide housing 301. At the same time, in the present embodiment, a threaded-screw hole connection method is adopted, which can more accurately determine the stepping distance of the pulling rod 201 according to the pitch of the thread, thereby making the expansion range of the guide housing 301 controllable; and the threaded-screw hole connection method itself has self-locking properties. In the present embodiment, a conventional hinge connection can be adopted at the connection point, thereby effectively controlling the overall volume of the device in the present application and ensuring the applicability of the device to incisions in different muscle layers.

[0040] Among them, Fig.10 As shown, a mounting hole 207 is provided at the upper end of the second control member 205 , and an extension rod 4 is inserted into the mounting hole 207 ; the extension rod 4 can extend the force arm to facilitate the rotation of the second control member 205 .

[0041] Among them, Fig.10 As shown, the main tube 101 is a double-layer tube, and the inner and outer layers of the main tube 101 can slide and rotate relative to each other; the rotation between the inner and outer layers of the main tube 101 can adjust the angle of the retrieval bag body 5 inserted inside without changing the position of the outer side, that is, the guide shell 301. At the same time, the sliding between the inner and outer sides of the main tube 101 allows the inner and outer layers of the main tube 101 to be disassembled from each other, that is, after the retrieval bag body 5 is used, the retrieval bag body 5 and the inner layer of the main tube 101 are separated and taken out separately, and the device still maintains the expansion of the muscle layer to facilitate subsequent operations.

[0042] Among them, Figure 7As shown, a limiting groove 304 is provided on the outer side of the guide shell 301; in one embodiment, when the device is inserted into the incision of the patient's muscle layer, the muscle layer will fit with the limiting groove 304, and the muscle layer in the limiting groove 304 will form a height difference with other positions of the guide shell 301, so that the device is not easily squeezed by the muscle and naturally slipped off; at the same time, when at least two guide shells 301 are unfolded, the angle between the guide shell 301 and the central axis of the main tube 101 is greater than zero and less than ninety degrees, and the angle between the limiting groove 304 and the muscle layer is less than ninety degrees, thereby forming a self-locking, which can effectively prevent the guide shell 301 from slipping off from the muscle layer incision.

[0043] Among them, Figure 2 As shown, the bag body 5 is also included; a bag control rod 501 is provided at the upper end of the bag body 5; and the bag control rod 501 is inserted into the interior of the main pipe 101.

[0044] The above is only a specific implementation of the present application. Under the above teachings of the present application, those skilled in the art can make other improvements or modifications based on the above embodiments. Those skilled in the art should understand that the above specific description is only to better explain the purpose of the present application, and the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A laparoscopic surgical retrieval bag with fascia expansion function, comprising: A main pipe (101), at least two guide shells (301), a connecting rod (203) and a pulling rod (201) are mounted on the outside of a picking bag, characterized in that at least two of the guide shells (301) are respectively located on two opposite sides of the main pipe (101); the lower end of the main pipe (101) is rotatably connected to the guide shell (301), and the inside of the guide shell (301) is rotatably connected to one end of the connecting rod (203), and the other end of the connecting rod (203) is connected to the pulling rod (201); the pulling rod (201) is installed on the outside of the main pipe (101) and slides along the central axis of the main pipe (101); when the pulling rod (201) slides along the main pipe (101) to the side away from the guide shell (301), the connecting rod (203) drives the guide shell (301) to unfold.

2. The laparoscopic surgical retrieval bag with fascia expansion function according to claim 1, characterized in that: When at least two of the guide shells (301) are closed to each other, a closed storage cavity is formed inside.

3. The laparoscopic surgical retrieval bag with fascia expansion function according to claim 1, characterized in that: An annular protrusion is provided in the middle of the main tube (101), and a through hole is provided inside the annular protrusion of the main tube (101) and runs longitudinally therethrough; the upper end of the pulling rod (201) is a sliding rod, and the sliding rod of the pulling rod (201) is inserted into the through hole of the main tube (101).

4. The laparoscopic surgical retrieval bag with fascia expansion function according to claim 3, characterized in that: A third connection point (302) is provided at the upper end of the guide shell (301), and a fourth connection point (303) is provided in the middle of the side of the guide shell (301) pointing to the main tube (101); the fourth connection point (303) is rotatably connected to one end of the connecting rod (203); the outer side of the annular protrusion of the main tube (101) is provided with first connection points (102) corresponding in number to the guide shell (301); the third connection point (302) is rotatably connected to the first connection point (102); and the end of the pulling rod (201) close to the bag body (5) is provided with second connection points (202) corresponding in number to the guide shell (301), and the second connection point (202) is connected to the other end of the connecting rod (203).

5. The laparoscopic surgical retrieval bag with fascia expansion function according to claim 1, characterized in that: The end of the pulling rod (201) close to the bag body (5) is fixedly connected to a first control member (204); the first control member (204) is sleeved on the outside of the main pipe (101), and a handle is provided at the end of the first control member (204) away from the bag body (5); the first control member (204) slides along the main pipe (101).

6. The laparoscopic surgical retrieval bag with fascia expansion function according to claim 1, characterized in that: A connecting groove (103) is provided on the outer side of one end of the main pipe (101) away from the bag body (5); an operating handle (206) is sleeved on the outer side of the connecting groove (103), and the operating handle (206) rotates around the central axis of the main pipe (101); a threaded hole is provided inside the end of the operating handle (206) close to the bag body (5); a second control member (205) is fixedly connected to the end of the pulling rod (201) away from the bag body (5), and a threaded section is provided on the outer side of the end of the second control member (205) away from the bag body (5); the threaded section of the second control member (205) is inserted into the threaded hole of the operating handle (206).

7. The laparoscopic surgical retrieval bag with fascia expansion function according to claim 6, characterized in that: The upper end of the second control member (205) is provided with a mounting hole (207), and an extension rod (4) is inserted into the mounting hole (207).

8. The laparoscopic surgical retrieval bag with fascia expansion function according to claim 1, characterized in that: The main pipe (101) is a double-layer pipe, and the inner and outer layers of the main pipe (101) can slide and rotate relative to each other.

9. A laparoscopic surgical retrieval bag with fascia expansion function according to any one of claims 1 to 8, characterized in that: A limiting groove (304) is provided on the outer side of the guide housing (301).

10. The laparoscopic surgical retrieval bag with fascia expansion function according to claim 1, characterized in that: It also comprises a bag body (5); the upper end of the bag body (5) is provided with a bag control rod (501); the bag control rod (501) is inserted into the interior of the main pipe (101).

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