Laparoscope fetching bag

Abstract

The invention relates to the technical field of surgical instruments, in particular to a laparoscope fetching bag which comprises a bag body, a sleeve and a pull rod, the bag body is connected to the end of the pull rod, the pull rod is arranged in the sleeve in a sliding mode, the bag body is composed of an inner bag and an outer bag, and the inner bag and the outer bag are fixed in a bonded mode and form a plurality of inflatable and deflatable air grids. The plurality of air grids are mutually connected through air transmission channels, and one of the air grids is connected with an inflation tube. According to the laparoscope fetching bag, the double-layer bag body is arranged, the air grids which are communicated with one another are formed in the bonding process of the double-layer bag body, the air grids are connected with the inflation pipe, after the bag body is placed into a lesion tissue through the puncture hole, the air grids are inflated through the inflation pipe, the bag body is expanded when the air grids are inflated, and air is slowly transmitted between the air grids, so that the bag body is not prone to falling off. The process that the bag body is slowly opened is achieved, so that pain cannot be caused to a patient, the bag body is full of the air grids, and it can be guaranteed that the bag body is completely opened.

Description

Technical Field

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

[0002] With the development of minimally invasive surgical technology, more and more traditional open surgeries can be performed through laparoscopic technology. During laparoscopic surgery, the tumor and other diseased tissues need to be removed from the patient's body in a timely manner. This laparoscopic surgery requires the use of a abdominal puncture and a retrieval bag. After the abdominal puncture opens a hole in the abdomen, the retrieval bag is sent into the body through the hole.

[0003] In order to allow the retrieval bag to enter the abdominal cavity smoothly, it is necessary to curl the retrieval bag and then insert it into the body. However, after entering the body, the retrieval bag is difficult to unfold by itself and needs to be separated by the doctor's hands or instruments. However, the space in the abdominal cavity is limited. This operation is difficult and time-consuming. In particular, not only the bag opening needs to be separated, but the lower end of the bag body is also prone to sticking together during the operation. At this time, the bag body also needs to be separated, which greatly affects the efficiency of the operation. In addition, when the existing retrieval bag is taken out, the liquid in the bag body is easy to overflow from the bag opening. If the accumulated fluid is not discharged in time, it will increase the patient's pain.

[0004] After searching, the patent with publication number CN205493890U discloses a laparoscopic specimen isolation and collection bag. A soft elastic wire ring is set on the bag body. When the collection bag is placed under the tumor requiring surgery in the abdominal cavity through the laparoscopic puncture hole, the elasticity of the soft elastic wire ring automatically rebounds and recovers, so that the bag opening is stretched below the tumor, and surgery can be performed above the collection bag.

[0005] However, in actual use, it is found that the automatic rebound and expansion of the wire ring after entering the target area will eject and touch the inner wall of the abdominal cavity, which will increase the patient's pain to a certain extent; coupled with the intra-abdominal pressure, the bag body cannot ensure full expansion, and when the specimen is large, it cannot completely enter the bottom of the bag, and some specimens will slip out of the bag; and the problem of easy leakage of fluid in the bag has not been solved. Summary of the invention

[0006] In order to solve the problem that the existing retrieval bag uses the elastic force of an elastic wire ring to expand, which can easily cause pain to the patient and cannot ensure that the bag body is fully expanded, the present invention provides a laparoscopic retrieval bag, which is provided with a double-layer bag body, and the double-layer bag body forms a plurality of interconnected air grids during the bonding process, and the air grids are connected to an inflation tube. After the bag body is inserted into the diseased tissue through the puncture hole, the inflation tube is used to inflate the air grids, and the air grids are inflated to expand the bag body, and the gas is transmitted relatively slowly between the air grids. It is a process of slowly expanding the bag body. Therefore, it will not cause pain to the patient, and the air grids are covered with the bag body, which can ensure that the bag body is fully expanded.

[0007] The present invention provides a laparoscopic retrieval bag, comprising a bag body, a sleeve and a pull rod, wherein the bag body is connected to the end of the pull rod, the pull rod is slidably arranged in the sleeve, the bag body is composed of an inner bag and an outer bag, the inner bag and the outer bag are bonded and fixed to form a plurality of inflatable and deflable gas grids, the plurality of gas grids are interconnected through a gas transmission channel, and one of the gas grids is connected to an inflation tube. The bag body is expanded through the interconnected gas grids, and the inflation process is a slow process, so it will not cause collision to the patient's abdominal cavity, and can ensure that the bag body is fully expanded.

[0008] Furthermore, during the bonding process of the inner bag and the outer bag, an annular air channel is formed on the upper edge of the bag body, the annular air channel is connected to the gas delivery channel connected to the air grid, and the inflation tube is connected to the annular air channel. The gas in the inflation tube is evenly transported to each annular circumferentially distributed air grid through the annular air channel to ensure that the bag body is evenly expanded from the upper edge to the bottom of the bag.

[0009] Furthermore, the annular airway has two ends and an annular channel formed between the two ends, one end is closed, and the other end is connected to the inflation tube. A gap position is reserved between the closed end and the end connected to the inflation tube.

[0010] Furthermore, a plurality of gas grids are circumferentially distributed along the depth direction of the bag body, and the gas grids on the upper edge of the bag body are connected to the annular channel through gas delivery channels arranged along the circumference of the annular channel. The gas delivery channels of the uppermost gas grids are circumferentially distributed and connected to the annular channel, so that the gas in the annular channel is evenly transported downward.

[0011] Furthermore, a suction channel is formed on the bag body during the bonding process of the inner bag and the outer bag, one end of the suction channel is open, and the other end is connected to the liquid extraction tube, and the opening of the suction channel is set at the center of the bottom of the inner bag. The liquid extraction tube formed during the bonding process of the inner bag and the outer bag facilitates the extraction of the accumulated fluid in the bag to prevent the accumulated fluid from overflowing into the abdominal cavity.

[0012] Furthermore, a notch is provided between the two ends of the annular air channel, and the suction channel extends from the notch to the center of the bottom of the inner bag. The suction channel is arranged at the notch and does not hinder the bag-supporting operation of the air grid.

[0013] Furthermore, a PVC semi-movable sheet is provided at the opening of the suction channel. When there is negative pressure in the suction channel, the PVC semi-movable sheet opens toward the inside of the suction channel. The PVC semi-movable sheet plays the role of opening and closing the opening. When there is no negative pressure in the normal suction channel, the inner bag and the outer bag are attached under the action of adhesion, and the PVC semi-movable sheet blocks the opening. When there is negative pressure in the channel, the suction channel bulges, and the PVC semi-movable sheet is sucked into the channel under the action of negative pressure, that is, the opening is opened, and the accumulated liquid at the bottom of the bag is sucked into the suction channel.

[0014] Furthermore, the pull rod is provided with two pipe grooves along its length direction for accommodating the inflation pipe and the liquid extraction pipe, and the inflation pipe and the liquid extraction pipe are connected to external equipment via the pipe grooves. By providing the pipe grooves on the pull rod, it is prevented that the pipes are exposed and cause additional damage to the incision.

[0015] Furthermore, both the inner bag and the outer bag are made of PU tensile medical film, which has good elasticity and air permeability.

[0016] Furthermore, the diameter of the bag body gradually decreases from the upper edge of the bag body to the bottom of the bag body, so that the accumulated liquid in the bag is concentrated at the bottom of the bag, which is convenient for subsequent suction operations.

[0017] The beneficial effects of the present invention are: The present invention provides a laparoscopic retrieval bag. A traditional single-layer retrieval bag is configured as a double-layer bag structure, so that an air grid and a suction channel are reserved during the hot-pressing bonding process between an inner bag and an outer bag. The air grid and the suction channel are respectively connected to two independent pipelines, one of which is used for filling and deflation of the air grid. The air grid is slowly inflated layer by layer to ensure that the bag body is fully expanded, so that the diseased tissue can be placed therein without causing any harm to the abdominal cavity. The other is used for negative pressure fluid suction. Before the bag is retracted, the accumulated fluid in the bag is first sucked out through the suction channel to prevent the accumulated fluid from leaking back into the abdominal cavity during the retraction of the retrieval bag and causing harm to the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are some implementations of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. Figure 1 It is a schematic diagram of the structure of the laparoscopic retrieval bag; Figure 2 This is a schematic diagram of the bottom of the inner bag; Figure 3 It is a schematic diagram of the state where the bag is not pushed out; In the figure, 1. bag body, 2. sleeve, 3. pull rod, 31. pull ring, 32. connecting pipe, 33. pipe groove, 4. air grid, 5. gas transmission channel, 6. annular airway, 61. notch, 7. inflation tube, 8. suction channel, 81. opening, 9. liquid extraction tube. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] In order to fully expand the bag and facilitate the placement of diseased tissue, a laparoscopic retrieval bag is designed. Figure 1 and 3 As shown, it includes a bag body 1, a sleeve 2 and a pull rod 3, the bag body 1 is connected to the end of the pull rod 3, and the pull rod 3 is slidably arranged in the sleeve 2. When in use, the pull rod 3 is used to push the folded bag body 1 out of the sleeve 2 into the abdominal cavity, the bag body 1 is unfolded in the abdominal cavity and collects the diseased tissue, and after the collection is completed, it is taken out from the laparoscopic incision under the pulling action of the pull rod 3. The process of putting the bag body 1 in and taking it out after collecting the tissue is a mature prior art, which is described in detail in the patent with announcement number CN221786387U, and will not be repeated here.

[0021] The core of this technical solution is that the bag body 1 is composed of an inner bag and an outer bag, which are bonded and fixed to form a plurality of inflatable and deflated air grids 4, and the plurality of air grids 4 are interconnected through an air transmission channel 5, and one of the air grids 4 is connected to an inflation tube 7. Among them, both the inner bag and the outer bag are made of PU tensile medical film, which has good elasticity and air permeability and has a wide range of clinical applicability. The inner bag and the outer bag are fixed by hot pressing. By setting the air grids 4 covering the bag body 1, not only can the bag body 1 be fully opened, but also the bag body 1 can be stably supported as a whole, so that the bag body 1 will not be deformed under the pressure of the abdominal cavity, thereby ensuring the collection and removal of the diseased tissue.

[0022] In order to make the bag body 1 evenly expand from top to bottom, an annular airway 6 is formed on the upper edge of the bag body 1 during the bonding process of the inner bag and the outer bag. The annular airway 6 is connected to the gas delivery channel 5 connected to the air grid 4, and the inflation tube 7 is connected to the annular airway 6. The annular airway 6 has two ends and an annular channel formed between the two ends, one of which is closed and the other end is connected to the inflation tube 7. The air grids 4 are circumferentially distributed along the depth direction of the bag body 1, and the air grids 4 on the upper edge of the bag body 1 are connected to the annular channel through the gas delivery channel 5 arranged circumferentially along the annular channel. The inflation tube 7 is connected to an external air pump. When the bag body 1 is placed in the surgical position, the inflation tube 7 inputs gas into the annular airway 6. The gas enters a circle of air grids 4 near the bag opening in an orderly manner along the annular channel, so that the first circle of air grids 4 are synchronously expanded and supported. The air grids 4 are distributed in a ring shape along the depth direction of the bag body 1. Therefore, the second air grids 4 can also be inflated synchronously. The bag body 1 is slowly and orderly expanded from the bag opening to the bottom of the bag until it is fully expanded, which can ensure that the diseased tissue falls to the bottom of the extraction bag and avoid the risk of tissue slipping out.

[0023] like Figure 2As shown, during the bonding process between the inner bag and the outer bag, a suction channel 8 is formed on the bag body 1. One end of the suction channel 8 has an opening 81, and the other end is connected to a liquid extraction tube 9. The opening 81 of the suction channel 8 is set at the center of the bottom of the inner bag. The suction channel 8 is connected to an external vacuum pump. After the diseased tissue is collected, before the bag is taken out from the incision, the suction channel 8 can be used to first suck out the accumulated fluid in the bag body 1 to prevent the accumulated fluid from leaking out during the bag removal process and contaminating the incision and the surgical area.

[0024] In order to avoid the suction channel 8, a notch 61 is provided between the two ends of the annular air channel 6, and the suction channel 8 extends from the notch 61 to the center of the bottom of the inner bag. The suction channel 8 and the air grid 4 are integrated on the bag body 1 and formed during the bonding process of the inner bag and the outer bag. Compared with the traditional outer bag and inner mesh bag or the design of exposed straw, the structure is simpler, the operation is convenient, and the cost is lower.

[0025] In order to prevent the backflow of the accumulated fluid, a PVC semi-movable sheet is provided at the opening 81 of the suction channel 8. When the suction channel 8 is under negative pressure, the PVC semi-movable sheet opens toward the inside of the suction channel 8. The diameter of the bag body 1 gradually decreases from the upper edge of the bag body 1 to the bottom of the bag body 1, so that the accumulated fluid that enters the bag body 1 along with the diseased tissue is accumulated at the bottom of the bag body 1.

[0026] When there is no negative pressure in the normal suction channel, the inner bag and the outer bag are in a fitted state under the action of the diseased tissue and the accumulated fluid, and the PVC semi-movable sheet blocks the opening 81. When there is negative pressure in the channel, the suction channel bulges, and the PVC semi-movable sheet is sucked into the channel under the action of the negative pressure, that is, it tilts to one side of the channel, opens the opening 81, and the accumulated fluid at the bottom of the bag body 1 is sucked into the suction channel 8.

[0027] In order to integrate the gas-filling tube 7 and the liquid-drawing tube 9 on the pull rod 3 to reduce the damage to the incision, the pull rod 3 is provided with two pipe grooves 33 along its length direction to accommodate the gas-filling tube 7 and the liquid-drawing tube 9. The gas-filling tube 7 and the liquid-drawing tube 9 are connected to external equipment via the pipe grooves 33. A retaining ring is provided at the end of the sleeve 2 to ensure that the pull rod 3 pushes the folded bag body 1 to the target position. The inner side of the retaining ring is also provided with a wedge surface, which can not only position the pull rod 3 but also not hinder the bag body 1 from extending. A pull ring 31 is also connected to the end of the pull rod 3. The pull ring 31 is fixed to the end of the pull rod 3 through a connecting tube 32 at its end. The connecting tube 32 is provided with two pipe openings, and the pipe openings can be used for the gas-filling tube 7 and the liquid-drawing tube 9 passing through the pipe groove 33 to extend and connect to external equipment. In order to ensure smooth gas transmission, the pipe opening is opened obliquely, so that the pipeline can extend in an arc shape. Compared with the conventional right-angle pipe opening opened on the side wall, the gas transmission can be smoother.

[0028] The above description is only illustrative rather than restrictive of the present invention. Those skilled in the art will understand that many modifications, changes or equivalents may be made without departing from the spirit and scope defined by the appended claims, but all will fall within the scope of protection of the present invention.

Claims

1. A laparoscopic retrieval bag, comprising a bag body (1), a sleeve (2) and a pull rod (3), wherein the bag body (1) is connected to the end of the pull rod (3), and the pull rod (3) is slidably arranged in the sleeve (2), characterized in that: The bag body (1) is composed of an inner bag and an outer bag, the inner bag and the outer bag are bonded and fixed to form a plurality of inflatable and deflable air grids (4), the plurality of air grids (4) are interconnected via an air transmission channel (5), and one of the air grids (4) is connected to an inflation tube (7).

2. A laparoscopic retrieval bag according to claim 1, characterized in that: During the bonding process of the inner bag and the outer bag, an annular air channel (6) is formed on the upper edge of the bag body (1); the annular air channel (6) is connected to the gas delivery channel (5) connected to the gas grid (4); and the inflation tube (7) is connected to the annular air channel (6).

3. A laparoscopic retrieval bag according to claim 2, characterized in that: The annular air channel (6) has two ends and an annular channel formed between the two ends, one of the ends is closed and the other end is connected to the inflation tube (7).

4. A laparoscopic retrieval bag according to claim 3, characterized in that: A plurality of the gas grids (4) are distributed circumferentially along the depth direction of the bag body (1), and the gas grids (4) on the upper edge of the bag body (1) are connected to the annular channel via a gas delivery channel (5) arranged along the circumference of the annular channel.

5. The laparoscopic retrieval bag according to claim 3, characterized in that: During the bonding process between the inner bag and the outer bag, a suction channel (8) is formed on the bag body (1); one end of the suction channel (8) is open (81), and the other end is connected to a liquid extraction tube (9); the opening (81) of the suction channel (8) is arranged at the center of the bottom of the inner bag.

6. A laparoscopic retrieval bag according to claim 5, characterized in that: A notch (61) is provided between the two ends of the annular air channel (6), and the suction channel (8) extends from the notch (61) to the center of the bottom of the inner bag.

7. The laparoscopic retrieval bag according to claim 5, characterized in that: A PVC semi-movable sheet is provided at the opening (81) of the suction channel (8), and when negative pressure is generated in the suction channel (8), the PVC semi-movable sheet opens toward the inside of the suction channel (8).

8. The laparoscopic retrieval bag according to claim 5, characterized in that: The pull rod (3) is provided with two tube grooves (33) along its length direction for accommodating an air-inflating tube (7) and a liquid-drawing tube (9); the air-inflating tube (7) and the liquid-drawing tube (9) are connected to external equipment via the tube grooves (33).

9. The laparoscopic retrieval bag according to claim 1, characterized in that: The inner bag and the outer bag are both made of PU tensile medical film.

10. The laparoscopic retrieval bag according to claim 1, characterized in that: The diameter of the bag body (1) gradually decreases from the upper edge of the bag body (1) to the bottom of the bag body (1).

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