Specimen collecting bag

By setting up storage and liquid chambers inside the specimen collection bag, the pre-storage of fixative and convenient use during surgery are achieved, solving the problems of cumbersome pre-operative preparation and fixative pouring, and ensuring that the bag remains usable during transportation.

CN224198286UActive Publication Date: 2026-05-05PEKING UNIVERSITY THIRD HOSPITAL (THE THIRD CLINICAL MEDICAL SCHOOL OF PEKING UNIVERSITY)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
PEKING UNIVERSITY THIRD HOSPITAL (THE THIRD CLINICAL MEDICAL SCHOOL OF PEKING UNIVERSITY)
Filing Date
2025-05-23
Publication Date
2026-05-05

AI Technical Summary

Technical Problem

Preparing fixative and injecting it into the specimen bag before surgery is a cumbersome procedure, and there is a risk of the fixative spilling during the transfer of the specimen bag.

Method used

Design a specimen collection bag comprising a storage chamber and a liquid chamber. The liquid chamber is connected to the storage chamber by squeezing. Fixative is pre-stored. During surgery, the excised material is placed into the storage chamber. The bag has the ability to deform to prevent the fixative from spilling.

Benefits of technology

It simplifies preoperative preparation, avoids the pouring of fixative fluid, ensures that the bag remains usable during transportation, and facilitates surgical use.

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Abstract

The utility model relates to a specimen collecting bag which comprises a bag body, a bag cover and a bag cover. The diaphragm is connected to the inner wall of the bag body and divides the interior of the bag body into a storage cavity and a liquid cavity, the storage cavity and the liquid cavity are independently arranged, the liquid cavity is used for storing stationary liquid, and the storage cavity is used for storing cut objects; the part of the diaphragm comprises a weak part, and the diaphragm is stressed to enable the weak part to be damaged preferentially, so that the storage cavity is communicated with the liquid cavity; the communicating structure is arranged on the surface of the bag body, the communicating structure is suitable for opening or closing the storage cavity, and the cutting object is suitable for penetrating through the communicating structure to be placed in the storage cavity. The storage cavity and the liquid cavity are formed in the bag body, and the liquid cavity communicates with the storage cavity through extrusion, so that fixed liquid in the liquid cavity flows into the storage cavity for use in an operation, and preoperative preparatory work is facilitated.
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Description

Technical Field

[0001] This application relates to the field of specimen bag technology, and in particular to a specimen collection bag. Background Technology

[0002] Pelvic lymph node dissection is a surgical procedure that uses open or laparoscopic techniques to en bloc remove the external iliac artery, the anterior and posterior surfaces of the external iliac vein, and the fibrous fat and lymphatic tissue between the vessels. The dissection extends from the inguinal canal to the area behind the obturator nerve. It is commonly used in radical cystectomy and radical prostatectomy.

[0003] Tissue and other excised materials removed during surgery need to be immersed in fixative and kept sealed for postoperative examination.

[0004] In related techniques, before surgery, fixative solution needs to be injected into the specimen bag to provide a fixative environment in the specimen bag. The excised material generated during the surgery is placed in the specimen bag to soak and preserve the excised material in the fixative solution.

[0005] However, before surgery, it is necessary to prepare fixative and inject it into the specimen bag to prepare for specimen preservation before surgery. The process of preparing fixative and injecting it into the specimen bag is quite complicated, and there is also a risk of spillage during the transfer of the specimen bag to the operating room. Utility Model Content

[0006] This application provides a specimen collection bag to solve the technical problems in related technologies, such as the cumbersome process of preparing fixative before surgery and injecting fixative into the specimen bag, and the risk of fixative spillage during the transfer of the specimen bag to the operating room.

[0007] A specimen collection bag comprising:

[0008] The bag body is sealed.

[0009] A diaphragm is attached to the inner wall of the bag and divides the inner part of the bag into a storage chamber and a liquid chamber, which are independently provided. The liquid chamber is used to store a fixative, and the storage chamber is used to store the excised material. The diaphragm includes a weak section, which is subjected to force to cause the weak section to break first, thereby connecting the storage chamber and the liquid chamber.

[0010] A connecting structure is disposed on the surface of the bag body and is adapted to open or close the storage cavity, wherein the cut-off material is adapted to pass through the connecting structure and be placed into the storage cavity.

[0011] In some embodiments, the thickness of the weak portion of the diaphragm is less than the thickness of the rest of the diaphragm.

[0012] In some embodiments, the specimen collection bag further includes a liquid injection structure adapted to open or close the liquid chamber; the liquid injection structure includes:

[0013] The injection tube is connected to the liquid chamber and is also connected to the external environment.

[0014] A sealing cap is fitted onto the injection tube and threadedly connected to it, and the sealing cap is used to seal the injection tube.

[0015] In some embodiments, the specimen collection bag further includes a venting structure disposed in the bag body and used to open or close the storage cavity; the venting structure includes:

[0016] An exhaust pipe, which is connected to the storage cavity and is also connected to the external environment;

[0017] A leak-proof cover is fitted onto the exhaust pipe and threadedly connected to it, and is used to seal the exhaust pipe.

[0018] In some embodiments, the exhaust pipe is arranged away from the weak point.

[0019] In some embodiments, the liquid chamber and the storage chamber are arranged sequentially from top to bottom.

[0020] In some embodiments, the inner wall of the storage cavity is uniformly provided with raised structures.

[0021] In some embodiments, the protrusion structure includes a ridge or a ball.

[0022] In some embodiments, the specimen collection bag further includes an identification structure for indicating the type of excised material within the bag; the identification structure includes:

[0023] Multiple signs are arranged on the surface of the bag;

[0024] A signboard, which is slidably disposed on the surface of the bag and adapted to slide to a signboard.

[0025] In some embodiments, the connectivity structure includes:

[0026] A connecting opening is provided on the surface of the bag body, and the connecting opening is adapted to allow the excised material to enter and exit the storage cavity;

[0027] A shielding piece, one edge of which is fixed to the bag body, and the remaining edges of which are fitted to the bag body to block the opening and seal the storage cavity.

[0028] The beneficial effects of the technical solution provided in this application include:

[0029] This application provides a specimen collection bag. Due to the arrangement of the liquid chamber, the fixative can be pre-placed within the liquid chamber and sold and used together with the bag. The bag's deformability facilitates the storage of the fixative and prevents breakage. Before surgery, the liquid chamber is squeezed to apply pressure to the weak point of the septum, causing it to rupture and connecting the liquid chamber and the storage chamber. This allows the fixative to flow into the storage chamber, creating a storage environment for the excised tissue. During surgery, the connecting structure is open, facilitating the placement of the excised tissue into the storage chamber. Therefore, there is no need to pre-prepare the fixative or inject it into the bag, simplifying preoperative preparation. The fixative will not spill during bag transport, ensuring the bag remains usable. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 A schematic diagram of a specimen collection bag provided in an embodiment of this application;

[0032] Figure 2 This is a schematic diagram of the interior of the specimen collection bag provided in an embodiment of this application.

[0033] In the diagram: 1. Bag body; 1a. Storage cavity; 1b. Liquid cavity; 2. Diaphragm; 2a. Weak part; 3. Connecting structure; 31. Connecting port; 32. Shielding plate; 4. Liquid injection structure; 41. Liquid injection tube; 42. Sealing cap; 5. Venting structure; 51. Venting pipe; 52. Leak-proof cap; 6. Raised structure; 7. Identification structure; 71. Identification sign; 72. Indication sign. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] This application provides a specimen collection bag. By arranging a storage chamber and a liquid chamber within the bag, compression connects the liquid chamber and the storage chamber, allowing the fixative in the liquid chamber to flow into the storage chamber for use during surgery. This application addresses the technical problems in related technologies where the process of preparing and injecting fixative into the specimen bag before surgery is cumbersome, and there is a risk of fixative spillage during the transfer of the specimen bag to the operating room.

[0036] Reference Figure 1 and Figure 2 A specimen collection bag includes a bag body 1, a diaphragm 2, and a connecting structure 3. The bag body 1 is sealed, and the interior of the bag body 1 is divided into a storage chamber 1a and a liquid chamber 1b by the diaphragm 2. The storage chamber 1a and the liquid chamber 1b are independently provided, the liquid chamber 1b is used to store fixative, and the storage chamber 1a is used to store excised specimens.

[0037] The fixative includes formalin solution, and the excised material is tissue or other excised material removed during the operation.

[0038] Specifically, the bag 1 is made of a transparent, flexible plastic material and is deformable to facilitate viewing the fixative and excised material inside.

[0039] The diaphragm 2 includes a weak part 2a. When the diaphragm 2 is subjected to force, the weak part 2a is broken first, thereby connecting the storage cavity 1a and the liquid cavity 1b.

[0040] With this setup, before surgery, pressure is applied to the diaphragm 2 by squeezing the liquid chamber 1b, causing the weak point 2a of the diaphragm 2 to rupture, thus connecting the liquid chamber 1b and the storage chamber 1a. The fixative in the liquid chamber 1b can then flow into the storage chamber 1a, thus creating a storage environment within the storage chamber 1a.

[0041] It is important to note that the fixative is sealed within the liquid cavity 1b during the fabrication of the bag 1, eliminating the need for preoperative injection into the liquid cavity 1b. Furthermore, because the fixative is confined within the liquid cavity 1b, the space within the liquid cavity 1b is smaller than the space within the storage cavity 1a. This confinement of the fixative within the liquid cavity 1b prevents it from flowing freely, thus facilitating the storage and transportation of the bag 1.

[0042] This design eliminates the need for pre-prepared fixative solution or injection into bag 1, simplifying preoperative preparation. The fixative solution will not spill during bag 1's transport, ensuring bag 1 remains usable.

[0043] Reference Figure 1 and Figure 2 The thickness of the weak part of the diaphragm 2 is less than the thickness of the rest of the diaphragm 2. The material of the diaphragm 2 is the same as that of the bag body 1. Preferably, the thickness of the diaphragm 2 is less than the thickness of the bag body 1.

[0044] With this design, when the diaphragm 2 is subjected to force, the weak points of the diaphragm 2 will be damaged to a limited extent, so as to facilitate the orderly and controllable flow of the fixative into the storage cavity 1a. Furthermore, when storing the excised material later, the fixative is less likely to flow back from the weak point 2a into the liquid cavity 1b, thus ensuring the fixative content in the storage cavity 1a.

[0045] In this embodiment, the liquid chamber 1b and the storage chamber 1a are arranged sequentially from top to bottom to facilitate the fabrication of the bag body 1.

[0046] Reference Figure 1 and Figure 2 The connecting structure 3 is arranged on the surface of the bag body 1, and the connecting structure 3 is adapted to open or close the storage cavity 1a, and the cut-off material is adapted to pass through the connecting structure 3 and be placed into the storage cavity 1a.

[0047] Specifically, the connecting structure 3 includes a connecting port 31 and a blocking plate 32.

[0048] A connecting opening 31 is formed on the surface of the bag body 1, and the connecting opening 31 is adapted for the excised material to enter and exit the storage cavity 1a. One edge of the shielding plate 32 is fixed to the bag body 1, and the remaining edges of the shielding plate 32 are attached to the bag body 1 to shield the connecting opening 31 and seal the storage cavity 1a.

[0049] This design allows for easy access to and from the storage cavity 1a by tearing open the connecting port 31 through the shielding plate 32. The shielding plate 32 also easily ensures the seal within the storage cavity 1a.

[0050] Specifically, the cover 32 is attached to the bag body 1 by an adhesive surface or Velcro, which makes it easy to keep the cover 32 in the state of covering the connection opening 31, and also makes it easy to tear the cover 32 open the connection opening 31.

[0051] Reference Figure 1 and Figure 2 Optionally, the specimen collection bag also includes a liquid injection structure 4, which is adapted to open or close the liquid chamber 1b.

[0052] This design allows for easy injection of fixative into liquid chamber 1b when the amount of fixative is insufficient. It also allows for timely replacement of the fixative if it deteriorates, ensuring the usability of bag 1.

[0053] Reference Figure 1 and Figure 2 Specifically, the injection structure 4 includes an injection tube 41 and a sealing cap 42.

[0054] The injection tube 41 is fixed to the bag body 1 and is connected to the liquid chamber 1b, and is also connected to the external environment. The injection tube 41 allows the fixed liquid to enter and exit the liquid chamber 1b.

[0055] A sealing cap 42 is fitted onto and threadedly connected to the injection tube 41, and is used to seal the injection tube 41. The sealing cap 42 seals the injection tube 41 by engaging with the injection tube 41, thus sealing the liquid chamber 1b. The injection tube 41 can be opened by removing the sealing cap 42.

[0056] In this embodiment, the liquid injection structure 4 is arranged on the top surface of the bag body 1.

[0057] Reference Figure 1 and Figure 2 Optionally, the specimen collection bag also includes an exhaust structure 5, which is located in the bag body 1 and is used to open or close the storage chamber 1a.

[0058] With this configuration, after the excised material is placed in the storage chamber 1a, the venting structure 5 opens the storage chamber 1a and squeezes it to expel excess air, ensuring the excised material is completely immersed in the fixative solution. Furthermore, the inner wall of the storage chamber 1a clamps and secures the excised material, preventing it from disintegrating during storage and preserving its shape, thus facilitating subsequent inspection.

[0059] Preferably, the exhaust structure 5 is arranged away from the weak part 2a of the diaphragm 2.

[0060] This configuration reduces the likelihood of the fixative fluid flowing back from the damaged weak point 2a to the liquid chamber 1b when the storage chamber 1a is squeezed and the venting structure 5 is used to vent the fluid.

[0061] Reference Figure 1 and Figure 2 Specifically, the exhaust structure 5 includes an exhaust pipe 51 and a leak-proof cover 52.

[0062] The exhaust pipe 51 is fixed to the bag body 1 and is connected to the storage cavity 1a and the external environment. The exhaust pipe 51 connects the storage cavity 1a to the outside environment.

[0063] The leak-proof cover 52 is fitted onto the exhaust pipe 51 and is threadedly connected to the exhaust pipe 51. The leak-proof cover 52 is used to seal the exhaust pipe 51. By cooperating with the exhaust pipe 51, the exhaust pipe 51 is sealed, so that the storage chamber 1a is in a sealed state. By removing the leak-proof cover 52, the gas in the storage chamber 1a can be discharged through the exhaust pipe 51.

[0064] Reference Figure 1 and Figure 2 Furthermore, the inner wall of the storage cavity 1a is uniformly provided with protruding structures 6.

[0065] Specifically, the protruding structure 6 includes protruding strips or protruding spheres.

[0066] With this configuration, by arranging the protruding structure 6, when the excised material is clamped in the storage cavity 1a, the protruding structure 6 partially clamps the excised material, while still keeping most of the excised material in contact with the fixative, thus ensuring effective storage of the excised material.

[0067] The shielding plate 32 also has a raised structure 6 inside.

[0068] Reference Figure 1 and Figure 2 The specimen collection bag also includes an identification structure 7, which is used to indicate the type of excised material inside the bag 1.

[0069] This setup is necessary because the types of excised tissue generated during surgery are diverse, requiring timely classification and storage of the excised tissue to avoid confusion during later testing. The excised tissue within the bag 1 can be quickly identified by the labeling structure 7.

[0070] Specifically, the signage structure 7 includes a signboard 72 and multiple signboards 71.

[0071] Multiple identification tags 71 are arranged on the surface of the bag body 1, and the identification tags 71 indicate the type of excised material. In this embodiment, the multiple identification tags 71 are all affixed to the surface of the bag body 1 and are distributed along a straight line.

[0072] The indicator sign 72 is slidably disposed on the surface of the bag body 1. In this embodiment, a slide rail is attached to the surface of the bag body 1, and the indicator sign 72 is slidably disposed on the surface of the bag body 1 via the slide rail. The sliding direction of the indicator sign 72 is consistent with the arrangement direction of the plurality of signs 71, and the indicator sign 72 is located above the signs 71.

[0073] The excised items inside the bag 1 can be quickly marked by sliding the indicator 72 directly above the label 71 corresponding to the name of the excised item.

[0074] Preferably, the sign 72 is arranged transparently.

[0075] This application provides a specimen collection bag. Due to the arrangement of the liquid chamber 1b, the fixative can be pre-placed in the liquid chamber 1b and sold and used together with the bag body 1. Because the bag body 1 has deformability, it facilitates the storage of the fixative and is not easily damaged. Before surgery, the liquid chamber 1b is squeezed to apply pressure to the weak part 2a of the diaphragm 2, causing the weak part 2a to rupture and connect the liquid chamber 1b and the storage chamber 1a, allowing the fixative to flow into the storage chamber 1a to create a storage environment for the excised tissue. During surgery, the connecting structure 3 is in the open state, facilitating the placement of the excised tissue into the storage chamber 1a. Therefore, there is no need to prepare the fixative in advance or inject it into the bag body 1, simplifying preoperative preparation. During transport, the fixative will not spill, ensuring that the bag body 1 remains usable.

[0076] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0077] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0078] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A specimen collection bag, characterized in that, It includes: The bag body is sealed. A diaphragm is attached to the inner wall of the bag and divides the inner part of the bag into a storage chamber and a liquid chamber, which are independently provided. The liquid chamber is used to store a fixative, and the storage chamber is used to store the excised material. The diaphragm includes a weak section, which is subjected to force to cause the weak section to break first, thereby connecting the storage chamber and the liquid chamber. A connecting structure is disposed on the surface of the bag body and is adapted to open or close the storage cavity, wherein the cut-off material is adapted to pass through the connecting structure and be placed into the storage cavity.

2. The specimen collection bag according to claim 1, characterized in that, The thickness of the weakest part of the diaphragm is less than the thickness of the rest of the diaphragm.

3. The specimen collection bag according to claim 1, characterized in that, It also includes a liquid injection structure adapted to open or close the liquid chamber; the liquid injection structure includes: The injection tube is connected to the liquid chamber and is also connected to the external environment. A sealing cap is fitted onto the injection tube and threadedly connected to it, and the sealing cap is used to seal the injection tube.

4. The specimen collection bag according to claim 1, characterized in that, It also includes a venting structure disposed in the bag body and used to open or close the storage cavity; the venting structure includes: An exhaust pipe, which is connected to the storage cavity and is also connected to the external environment; A leak-proof cover is fitted onto the exhaust pipe and threadedly connected to it, and is used to seal the exhaust pipe.

5. The specimen collection bag according to claim 4, characterized in that, The exhaust pipe is located away from the weak point.

6. The specimen collection bag according to any one of claims 1-5, characterized in that, The liquid chamber and the storage chamber are arranged sequentially from top to bottom.

7. The specimen collection bag according to claim 1, characterized in that, The inner wall of the storage cavity is uniformly arranged with raised structures.

8. The specimen collection bag according to claim 7, characterized in that, The protruding structure includes protruding strips or protruding spheres.

9. The specimen collection bag according to claim 1, characterized in that, It also includes an identification structure for indicating the type of excised material within the bag; the identification structure includes: Multiple signs are arranged on the surface of the bag; A signboard, which is slidably disposed on the surface of the bag and adapted to slide to a signboard.

10. The specimen collection bag according to claim 1, characterized in that, The connectivity structure includes: A connecting opening is provided on the surface of the bag body, and the connecting opening is adapted to allow the excised material to enter and exit the storage cavity; A shielding piece, one edge of which is fixed to the bag body, and the remaining edges of which are attached to the bag body to shield the opening and seal the storage cavity.