Biopsy bag for laparoscope channel

Abstract

The utility model relates to the technical field of biopsy bags, in particular to a laparoscope channel biopsy bag which comprises a channel. A sealing cover; the bag body comprises a connecting part, a bearing part and a window, the top end of the connecting part is connected with the end, away from the sealing cover, of the channel, the bottom end of the connecting part is in sealed connection with the bearing part, a supporting part is arranged in the bearing part and connected with a traction part, one end of the traction part is connected with the supporting part, and the other end of the traction part extends to the top end of the connecting part and is arranged in the channel; the window is arranged on the side wall of the connecting part; when the traction part is stressed to move towards one side close to the sealing cover, the bag body is stressed to be folded and contained in the channel, the bearing part can be pulled into the channel by pulling the pull rod, the whole bag body is driven to be collected in the channel, and manual folding is not needed; the steel wire strips and the pull rods are nickel-titanium wires, have good shape memory effect and superelasticity and can still recover to the original shape under large deformation, and the bag body is convenient to fold and unfold.

Description

Technical Field

[0001] The utility model relates to the technical field of biopsy bags, in particular to a laparoscopic channel biopsy bag. Background Art

[0002] With the continuous advancement of medical technology, laparoscopic surgery has become an important development direction in the field of surgery due to its advantages such as less trauma, faster recovery, and less postoperative scars. This minimally invasive surgical method not only reduces the patient's pain, but also improves the safety and aesthetics of the operation. During laparoscopic surgery, a key link is to safely and effectively remove the resected tissue and organ specimens from the surgical area. Existing biopsy bags need to be manually folded and placed into the channel, and then unfolded in the abdominal cavity. However, due to the differences in manual operation, the effect of folding the biopsy bag each time may be different, resulting in inconsistent unfolding of the biopsy bag, which in turn affects the smooth removal of the biopsy sample. In addition, the biopsy bag may not unfold smoothly during unfolding, which increases the difficulty of operation.

[0003] Therefore, a laparoscopic channel biopsy bag is proposed to solve the problems existing in the prior art. Utility Model Content

[0004] The utility model aims to provide a laparoscopic channel biopsy bag to solve the problems in the prior art that the biopsy bag is difficult to close and cannot be smoothly unfolded in the abdominal cavity.

[0005] The technical solution of the utility model is: a laparoscopic channel biopsy bag, comprising:

[0006] aisle;

[0007] a sealing cover, which is arranged on the channel;

[0008] The bag body includes a connecting portion, a receiving portion, and a window, wherein the top end of the connecting portion is connected to an end of the channel away from the sealing cover, the bottom end of the connecting portion is sealed with the receiving portion, a supporting portion is provided in the receiving portion, the supporting portion is arranged along the edge contour of the receiving portion, the supporting portion is connected to a pulling portion, one end of the pulling portion is connected to the supporting portion, and the other end extends to the top end of the connecting portion and is arranged in the channel; the window is arranged on the side wall of the connecting portion;

[0009] When the pulling portion is forced to move toward the sealing cover, the supporting portion is deformed, folded along with the bag body, and accommodated in the channel.

[0010] Preferably, the supporting portion includes two steel wire strips that are symmetrical relative to the center of the receiving portion, and the pulling portion includes two pull rods, one end of the two pull rods are connected to each other, and the other end is respectively connected to the middle of the two steel wire strips.

[0011] Preferably, the two pull rods are both arranged along the contour of the connecting portion and extend into the channel, and the two pull rods are symmetrical relative to the center of the receiving portion.

[0012] Preferably, the other ends of the two pull rods penetrate the receiving portion and are connected to the corresponding steel wire strips, wherein the connection position is arc-shaped, and the center of the arc faces the bag body.

[0013] Preferably, the two steel wire strips are not connected to each other and there is a gap between them.

[0014] Preferably, the top end area of ​​the connecting portion is smaller than the bottom end area of ​​the connecting portion, and the connecting portion is arranged at an incline.

[0015] Preferably, the steel wire strip and the pull rod are both nickel-titanium wires.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] (1) The steel wire strips are distributed at the bottom edge of the receiving part and are connected to the pull rod. By pulling the pull rod, the receiving part can be pulled into the channel, and the entire bag body can be brought into the channel without manual folding;

[0018] (2) The two steel wires and the two pull rods are symmetrically arranged. When the pull rods are pulled, the forces on both sides of the bag body can be balanced, so that the bag body can be completely contracted in the channel. The bag body will not be unable to be completely contracted in the channel or the moving distance of the pull rods will not be increased due to uneven forces.

[0019] (3) The connection position between the steel wire and the tie rod is an arc shape. After the bag is gathered in the channel, the arc shape is stressed and exposed in the channel. By touching the arc shape downward, the arc shape is deformed and no longer contacts the inner wall of the channel, so that the steel wire and the tie rod return to their original shape, thereby expanding the bag;

[0020] (4) The steel wire and the pull rod are both nickel-titanium wires. Nickel-titanium wires have excellent shape memory effect and superelasticity. They can still return to their original shape under large deformation, which is convenient for assisting the contraction and expansion of the bag body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0022] Figure 1 This is a schematic structural diagram of a laparoscopic channel biopsy bag according to the present invention;

[0023] Figure 2 This is a schematic structural diagram of the bag body of the utility model;

[0024] Figure 3This is a three-dimensional exploded schematic diagram of the bag body of the utility model;

[0025] Figure 4 This is a side sectional view of the bag body of the utility model;

[0026] Figure 5 for Figure 4 Schematic diagram of the enlarged structure of A;

[0027] Figure 6 It is a structural schematic diagram of the steel wire strip described in the utility model.

[0028] Among them: 1. channel; 2. sealing cover; 3. bag body; 31. connecting part; 32. receiving part; 33. window; 4. supporting part; 41. steel wire; 5. pulling part; 51. pull rod; 52. arc shape. DETAILED DESCRIPTION

[0029] The following is a further detailed description of the present invention in conjunction with specific embodiments:

[0030] like Figure 1 As shown, a laparoscopic channel 1 biopsy bag includes a channel 1, a sealing cover 2, and a bag body 3. The sealing cover 2 is set on the top of the channel 1 to seal the channel 1. The bag body 3 is connected to the bottom of the channel 1 and is initially contracted in the channel 1. When in use, the bag body 3 is unfolded in the abdominal cavity. The bag body 3 includes a connecting portion 31 and a receiving portion 32. The bottom end of the connecting portion 31 is sealed and connected to the receiving portion 32 to form a cavity. A window 33 is provided on the side wall of the bag body 3. Medical staff can insert the tissue to be removed. The bag 3 is placed in the cavity through the window 33. A supporting portion 4 is provided in the receiving portion 32 along the edge contour of the receiving portion 32. The supporting portion 4 folds the receiving portion 32 into the channel 1 through deformation, or restores the original shape so that the bag body 3 is unfolded along with the receiving portion 32. The supporting portion 4 is connected to a pulling portion 5. One end of the pulling portion 5 is connected to the supporting portion 4, and the other end extends into the channel 1. By pulling the pulling portion 5, the supporting portion 4 is deformed by the force, so that the bag body 3 can be contracted into the channel 1.

[0031] In this embodiment, Figure 2-Figure 3As shown, the support portion 4 includes two steel wire strips 41 that are symmetrical relative to the center of the receiving portion 32, and the pulling portion 5 includes two pull rods 51. One end of the two pull rods 51 is connected together. When one end of the pull rod 51 is pulled, the two pull rods 51 are subjected to force at the same time and in the same direction, and the force is also the same, which can uniformly control the expansion and contraction of the biopsy bag, and when the other ends of the two pull rods 51 are connected together, they form a whole with the steel wire strip 41, thereby reducing the shaking of the biopsy bag and ensuring the smooth progress of the operation; the two steel wire strips 41 are symmetrical relative to the center of the receiving portion 32, and can form a stable supporting structure to ensure that the biopsy bag remains balanced during the expansion process and is not prone to tilting or twisting. The contraction of the biopsy bag can be easily controlled by the pull rod 51, and the expansion degree and shape of the biopsy bag can be accurately controlled by adjusting the position and strength of the pull rod 51, which is convenient for the operator to adjust according to the needs of different operations.

[0032] Among them, the steel wire strip 41 and the pull rod 51 are both nickel-titanium wires. Nickel-titanium wires have excellent superelasticity and can undergo large deformation after being subjected to external force, and quickly return to their original shape after the external force is removed, so that the biopsy bag can maintain good shape stability and recovery during the expansion and contraction process, ensuring the smooth progress of the operation. Nickel-titanium wires also have shape memory properties and can remember and return to the preset shape.

[0033] In one embodiment, when the steel wire strips 41 have no turning points or have an even number of turning points, the pull rod 51 is connected to the middle of the steel wire strips 41. When the pull rod 51 moves toward the side close to the sealing cover 2, the two steel wire strips 41 are not connected to each other and there is a gap. The pull rod 51 pulls the steel wire strips 41 on both sides to move toward the center. The two steel wire strips 41 fold along the gap. When they move to the channel 1, they are deformed under the action of the inner wall space of the channel 1 and are accommodated in the channel 1. The gap between the two steel wire strips 41 provides a folding position to prevent the two steel wire strips 41 from being connected together. They move together with the pull rod 51, driving the receiving portion 32 to contact the end of the channel 1 away from the sealing cover 2. Part of the receiving portion 32 covers the channel 1 and cannot be deformed by force, resulting in the bag body 3 being unable to be accommodated in the channel 1, affecting the progress of the operation.

[0034] In another embodiment, Figure 6 As shown, the steel wire strip 41 has an odd number of turns. At this time, the pull rod 51 is connected to the turn in the middle of the steel wire strip 41. When there is a gap between the two steel wire strips 41, the steel wire strip 41 is folded along the gap or the turn connected to the pull rod 51 and is pulled into the channel 1 by the pull rod 51. When the two steel wire strips 41 are connected together without a gap, the steel wire strip 41 is pulled by the pull rod 51 and folded along the turn connected to the connecting rod, so that part of the position of the receiving portion 32 cannot cover the channel 1, so that the bag body 3 can be pulled into the channel 1 without manual folding and tightening.

[0035] Further, such as Figure 3 As shown, the two pull rods 51 are arranged along the contour of the connecting portion 31 and are symmetrical with respect to the center of the receiving portion 32. When the pull rods 51 are pulled, the tension is distributed more evenly on the connecting portion 31, avoiding stress concentration, thereby enhancing the strength and stability of the entire structure, helping to reduce structural damage or deformation caused by uneven force, and in the process of expanding or contracting the biopsy bag, the connecting portion 31 may be subjected to a large tension or pressure. The arrangement of the pull rods 51 along the contour can more effectively resist these forces and prevent damage to the connecting portion 31. At the same time, the pull rods 51 are arranged along the contour of the connecting portion 31. The setting can also make the expansion and contraction of the bag body 3 smoother, reduce jamming or resistance, and help doctors control the expansion and contraction of the biopsy bag more easily during the operation, thereby improving the efficiency of the operation; and the two pull rods 51 are symmetrical relative to the center of the receiving part 32, so that the force of the receiving part 32 is balanced, preventing one side from being subjected to force or unbalanced force, resulting in part of the bag body 3 being contracted in the channel 1 and the other part still exposed outside, or increasing the moving length of the pull rod 51 to completely contract the bag body 3 into the channel 1, which not only affects or even makes it impossible to re-expand the bag body 3, but also affects the efficiency of the operation.

[0036] In order to improve the opening speed and opening efficiency of the bag body 3, Figure 4-Figure 5 As shown, the other end of the pull rod 51 penetrates the receiving portion 32 and is connected to the steel wire strip 41. The connection position is in an arc shape 52, and the center of the arc shape 52 faces the bag body 3. When the pull rod 51 pulls the steel wire strip 41 to deform, the arc shape 52 is always in a state of bulging outward. After entering the channel 1, the arc shape 52 is close to the inner wall of the channel 1 and supported on the inner wall of the channel 1. When the bag body 3 needs to be opened, the arc shape 52 is poked with an endoscope. The arc shape 52 is deformed by the force and shrinks toward the center without generating an extrusion pressure on the inner wall of the channel 1. At the same time, it moves toward the end away from the sealing cover 2 and drives the steel wire strip 41 and the pull rod 51 to move, so that the bag body 3 leaves the channel 1, and the pull rod 51 and the steel wire strip 41 restore their shape to open the bag body 3.

[0037] To facilitate the doctor's placement of tissue into the bag body 3, the top area of ​​the connecting portion 31 is smaller than the bottom area of ​​the connecting portion 31, so that the connecting portion 31 is in an inclined state, and the window 33 is located on the side wall of the connecting portion 31, so that the window 33 is in an inclined state, which increases the area of ​​the window 33, making the doctor's operation more convenient and improving the accuracy and efficiency of sample collection.

[0038] The implementation principle of this embodiment is as follows:

[0039] When in use, one end of the pull rod 51 is pulled so that the two pull rods 51 are subjected to force at the same time and move in the same direction. The other ends of the two pull rods 51 are respectively connected to the two steel wire strips 41, and the steel wire strips 41 are pulled so that the steel wire strips 41 are folded along the gap or turn, and gradually approach the channel 1 as the pull rod 51 moves. The steel wire strips 41 are arranged in the receiving portion 32, so that the receiving portion 32 moves with the movement of the steel wire strips 41 and is gathered in the channel 1. The steel wire strips 41 are supported on the inner wall of the channel 1. When the channel 1 is placed in the human abdominal cavity and the biopsy bag needs to be opened, the front end of the endoscope is used to poke the arc 52 so that the arc 52 is deformed under force and does not abut against the inner wall of the channel 1, thereby allowing the steel wire strips 41 and the pull rod 51 to restore their original shape and open the biopsy bag.

[0040] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and they are not intended to limit the scope of protection of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A laparoscopic channel biopsy bag, characterized in that: include: channel (1); A sealing cover (2) is provided on the channel (1); A bag body (3), the bag body (3) comprising a connecting portion (31), a receiving portion (32), and a window (33), wherein the top end of the connecting portion (31) is connected to an end of the channel (1) away from the sealing cover (2), the bottom end of the connecting portion (31) is sealedly connected to the receiving portion (32), a supporting portion (4) is provided in the receiving portion (32), the supporting portion (4) is arranged along the edge contour of the receiving portion (32), the supporting portion (4) is connected to a pulling portion (5), one end of the pulling portion (5) is connected to the supporting portion (4), and the other end extends to the top end of the connecting portion (31) and is arranged in the channel (1); the window (33) is arranged on the side wall of the connecting portion (31); When the pulling portion (5) is forced to move toward the side close to the sealing cover (2), the supporting portion (4) is deformed, folded along with the bag body (3) and accommodated in the channel (1).

2. The laparoscopic channel biopsy bag according to claim 1, characterized in that: The supporting portion (4) includes two steel wire strips (41) that are symmetrical relative to the center of the receiving portion (32), and the pulling portion (5) includes two pull rods (51). One end of the two pull rods (51) is connected to each other, and the other end is respectively connected to the middle of the two steel wire strips (41).

3. The laparoscopic channel biopsy bag according to claim 2, characterized in that: The two pull rods (51) are both arranged along the contour of the connecting portion (31) and extend into the channel (1), and the two pull rods (51) are symmetrical relative to the center of the receiving portion (32).

4. The laparoscopic channel biopsy bag according to claim 2, characterized in that: The other ends of the two pull rods (51) penetrate the receiving portion (32) and are connected to the corresponding steel wire strip (41), wherein the connection position is an arc shape (52), and the center of the arc shape (52) faces the bag body (3).

5. The laparoscopic channel biopsy bag according to claim 2, characterized in that: The two steel wire strips (41) are not connected to each other and there is a gap between them.

6. The laparoscopic channel biopsy bag according to claim 1, characterized in that: The top end area of ​​the connecting portion (31) is smaller than the bottom end area of ​​the connecting portion (31), and the connecting portion (31) is arranged in an inclined manner.

7. The laparoscopic channel biopsy bag according to claim 2, characterized in that: The steel wire strip (41) and the pull rod (51) are both nickel-titanium wires.

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