Retrieval bag for endoscopic surgery

Abstract

The invention relates to a retrieval bag (1) for endoscopic surgery with a receiving bag (7) that can be expanded inside the body of a patient. In order to create a retrieval bag (1) which ensures a safe course of surgery while being easy to handle, the invention proposes that the receiving bag (7) can be expanded by introducing a fluid.

Description

The invention relates to a recovery bag for endoscopic surgery, having a receiving bag which can be expanded in the interior of the body of a patient.Mountain bags are used in endoscopic surgery to isolate, package and transport tissue parts from the patient's body to the outside through an endoscopic approach. The mountain bags are used to prevent contamination of the surgical area with removed tissue.For this purpose, the mountain bags are introduced folded together via a trocar into the surgical area and only expanded in the interior of the patient for receiving tissue. In practice, the bags are usually expanded by means of endoscopic instruments. However, this procedure has the disadvantage that the recovery bag must always be held with at least one clamp during the operation and must be kept open at the inlet.Furthermore, DE 10 2015 012 964 B4 discloses an access system for endoscopic operations, in which an expansion element provided with a plurality of expansion arms can be introduced into the surgical area via the trocar, wherein the expansion element is equipped with a recovery bag in such a way that the recovery bag is unfolded by the expansion arms expanding radially outwards when it enters the surgical area. However, due to the complexity of the spreading element, it is difficult to introduce still other medical instruments into the surgical area via this trocar.On this basis, the object of the invention is to create a mountain bag which ensures a safe course of operation with simple handling.The solution of this object is characterized according to the invention in that the receiving bag can be expanded by introducing a fluid.By widening the receiving bag by means of a fluid, external mechanical widening aids, such as additional medical instruments or spreading elements, can be dispensed with for the first time.According to a practical embodiment of the invention, it is proposed that the receiving bag is suspended from an outer support structure, wherein the support structure consists of tubes into which the fluid can be introduced for widening the receiving bag. As soon as the fluid flows into the support structure formed from hoses, this support structure widens and stabilizes and thus automatically widens the receiving bag suspended from the support structure.In order to be able to introduce the support structure consisting of tubes simply in the folded state through a trocar into the surgical area, it is proposed according to the invention that the tubes are designed as film tubes, wherein the fluid can be introduced completely or only partially into the tubes forming the support structure.For forming the support structure, the invention further proposes that the hoses forming the outer support structure surround the receiving bag in the form of a polygonal honeycomb structure. By means of the polygonal honeycomb structure, it is possible to produce a dimensionally stable structure with few hoses, which surrounds the receiving bag in a load-bearing manner.According to a preferred embodiment of the invention, it is proposed that the polygonal honeycomb structure consists of pentagonal and hexagonal shapes. The combination of pentagonal and hexagonal shapes makes it possible to easily form a spherical shape of the support structure, as is known, for example, from the outer casing of footballs. Alternatively, it is also possible to form the polygonal honeycomb structure consisting of triangles.In order to prevent the entire mountain bag from collapsing in the event of damage to a tube of the support structure, the invention further proposes that the support structure be formed redundantly from a plurality of tubes which can be filled with the fluid independently of one another.For filling the hoses of the support structure with the fluid, it is proposed according to the invention that the hoses forming the outer support structure can be filled with the fluid from outside the body via a fluid hose. Thus, the fluid can be introduced easily and accurately dosed into the tubes of the support structure, for example by means of a syringe.Finally, the invention proposes that the fluid for widening the receiving bag be air. Alternatively, it is of course also possible to use CO 2, helium or also water or a medical rinsing liquid as the fluid.With a practical embodiment of the invention, it is further proposed that the receiving bag in the expanded state forms the shape of a dome, hemisphere or sphere.For forming the mountain bag, it is further proposed according to the invention that the hoses forming the support structure are connected to the receiving bag completely or only partially.Further features and advantages of the invention are evident on the basis of the associated drawings, in which four exemplary embodiments of a recovery bag according to the invention for endoscopic surgery are shown only by way of example, without restricting the invention to these exemplary embodiments. The drawings, specification and claims contain numerous features in combination. It is understood that the features mentioned above and those still to be explained below can be used not only in the respectively specified combination, but also in other combinations or alone, without departing from the scope of the present invention. In the drawings, the following shows: FIG. 1 shows a schematic illustration of the use of a recovery bag for endoscopic surgery according to the prior art; FIG. 2 is a schematic perspective view illustrating a first embodiment of a mountain bag according to the invention; FIG. 3 is a view according to FIG. 2, but showing a second embodiment of a mountain bag according to the invention; FIG. 4 is a schematic perspective view illustrating a third embodiment of a mountain bag according to the invention; and FIG. 5 shows a schematic top view of a fourth embodiment of a mountain bag according to the invention.FIG. 1 schematically shows the use of a recovery bag 1 according to the prior art in an endoscopic surgical use.In the laparoscopic procedure shown schematically, a trocar 2 is inserted into an incision 3 in the abdominal wall 4 of the patient in order to be able to introduce, via the trocar 2, for example the rescue bag 1 and possibly further medical instruments into the surgical area 5.An endoscope 6 inserted through a further incision 3 in the abdominal wall 4 of the patient serves to observe and guide the surgical procedure.Mountain bags 1 are used in endoscopic surgery to isolate, package and transport tissue parts from the surgical area 5 in the patient's body to the outside through an endoscopic access, such as a trocar 2.The mountain bag 1 is introduced folded together via the trocar 2 into the surgical area 5 and widened only in the interior of the patient for receiving tissue. In the case of morcellation, the tissue can be packed into the mountain bag 1 and comminuted without the risk of contamination of the surrounding healthy tissue for removal inside the mountain bag 1.FIG. 2 shows a first embodiment for forming a mountain bag 1.The mountain bag 1 shown consists essentially of a receiving bag 7 suspended from an outer support structure 8, wherein the support structure 8 consists of hoses 9, into which a fluid, in particular air, can be introduced for widening the receiving bag 7. As soon as the fluid flows into the support structure 8 formed from hoses 9, this support structure 8 widens and stabilizes and thus automatically widens the receiving bag 7 suspended from the support structure 8 without the aid of a further medical instrument.Alternative fluids for expanding the receiving bag 7 are, for example, CO 2, helium, as well as water and medical rinsing fluids.In this expanded position, the receiving bag 7 of the recovery bag 1 is ready for use for receiving removed tissue.In order to be able to introduce the recovery bag 1 as compactly folded or rolled up as possible through the trocar 2 into the surgical area 5, the hoses 9 are designed as thin-walled film hoses.To form the support structure 8, the hoses 9 forming the outer support structure 8 surround the receiving bag 7 in the form of a polygonal honeycomb structure. The polygonal honeycomb structure makes it possible to produce a dimensionally stable structure with few hoses 9, which surrounds the receiving bag 7 in a load-bearing manner.Advantageously, the polygonal honeycomb structure consists of pentagonal and hexagonal shapes. The combination of pentagonal and hexagonal shapes can easily be formed into a spherical shape of the support structure 8, as is known, for example, from the outer cover of footballs.In the first embodiment shown in FIG. 2 for forming the mountain bag 1, the mountain bag 1 is formed in the shape of a hemisphere 10.The second embodiment of the recovery bag 1 shown in FIG. 3 differs from the embodiment according to FIG. 2 in that the recovery bag 1 in this embodiment is designed as a ball 11.The filling of the tubes 9 forming the support structure 8 with the fluid for widening the receiving bag 7 takes place via a separate fluid tube 12 connected to the tubes 9, which can be filled with the fluid guided through the trocar 2 from outside the body. Thus, the fluid can be introduced easily and accurately dosed into the tubes 9 of the support structure 8, for example by means of a syringe.The receiving bag 7, expanded by the introduction of the fluid, can be easily and quickly filled with tissue to be separated by means of suitable medical instruments, such as forceps. The outer support structure 8 ensures that the expanded receiving bag 7 has a stable shape and does not collapse, which could lead to the tissue located in the receiving bag 7 falling out.The filled receiving bag 7 is closed, for example by clipping or sewing.In the embodiment shown in FIG. 3 with a receiving bag 7 designed as a ball 12, the receiving bag 7 can have a predetermined opening for filling the interior of the bag, but it is also possible for the receiving bag 7 to be cut open only for filling with the tissue to be separated. This opening can then also be easily closed again by clipping or sewing.According to the embodiments shown in FIGS. 4 and 5, the polygonal honeycomb structure may be formed of triangles only.FIG. 4 shows a perspective view of the design of the supporting structure 8 consisting of a multiplicity of small triangles. The receiving bag 7 which is connected at least in sections to the carrying structure 8 and is arranged in the interior of the carrying structure 8 is shown in this illustration by dashed lines only in the circumferential region of the opening of the recovery bag 1. Otherwise, the shape of the receiving bag 7 corresponds to that of the inner side of the support structure 8, wherein the receiving bag 7 is connected at least partially to the support structure.Alternatively to the representation of the mountain bag 1 as a hemisphere, it is of course also possible to also form the mountain bag 1 formed in this way as a three-quarter sphere or a complete sphere.FIG. 5 shows a plan view of a mountain bag 1, in which the support structure 8 consists of six large triangles. The receiving bag 7 is connected at least in sections to the support structure 8, so that the latter is expanded when the fluid is introduced into the support structure 8, which is designed as hoses 9.The mountain bags 1 constructed as described above can of course be used not only in endoscopic surgery but also in classic open surgery.A recovery bag 1 constructed as described above with reference to the figures is characterized in that it ensures a safe course of operation with simple handling.The drawings, specification and claims contain numerous features in combination. It is understood that the features mentioned above can be used not only in the respectively specified combination, but also in other combinations or alone, without departing from the scope of the present invention. In order to create a rescue bag 1 which ensures a safe course of operation with simple handling, it is proposed according to the invention that the receiving bag 7 can be expanded by introducing a fluid.List of reference characters1 Mountain bag 2 Trocar 3 Incision 4 Abdominal wall 5 Surgical area 6 Endoscope 7 Receiving bag 8 Supporting structure 9 Tube 10 Hemisphere 11 Sphere 12 Fluid tubeReferences included in the specificationThis list of documents cited by the applicant has been produced in an automated manner and is only included for the better information of the reader. The list is not part of the German patent application or utility model application. The DPMA does not take any adhesion for any faults or omissions.Patent Literature citedDE 10 2015 012 964 B4

[0004]

Claims

A recovery bag (1) for endoscopic surgery, comprising a receiving bag (7) expandable in the interior of the body of a patient, characterized in that the receiving bag (7) is expandable by introducing a fluid.Recovery bag (1) according to claim 1, characterised in that the receiving bag (7) is suspended from an outer support structure (8), wherein the support structure (8) consists of hoses (9) into which the fluid can be introduced for widening the receiving bag (7).Recovery bag (1) according to claim 2, characterised in that the fluid can be introduced completely or only partially into the tubes (9) forming the support structure (8).Recovery bag (1) according to Claim 2 or 3, characterized in that the hoses (9) are designed as film hoses.Recovery bag (1) according to one of Claims 2 to 4, characterized in that the hoses (9) forming the outer supporting structure (8) surround the receiving bag (7) in the form of a polygonal honeycomb structure.A mountain bag (1) according to claim 5, characterized in that the polygonal honeycomb structure consists of pentagonal and hexagonal.The mountain bag (1) according to claim 5, characterized in that the polygonal honeycomb structure is made of triangles.Recovery bag (1) according to one of Claims 2 to 7, characterized in that the carrying structure (8) is formed redundantly from a plurality of hoses (9) which can be filled with the fluid independently of one another.Recovery bag (1) according to one of Claims 2 to 8, characterized in that the hoses (9) forming the outer carrying structure (8) can be filled with the fluid from outside the body via a fluid hose (12).A mountain bag (1) according to any one of claims 1 to 9, characterized in that the fluid is air or CO 2.Recovery bag (1) according to one of Claims 2 to 10, characterized in that the receiving bag (7) in the expanded state forms the shape of a dome, hemisphere or sphere.Recovery bag (1) according to one of Claims 2 to 11, characterized in that the hoses (9) forming the carrying structure (8) are connected to the receiving bag (7) completely or only in sections.

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