Tissue removal bag for removing tissue from surgical site
By designing a single-component tissue retrieval bag with an embossed flat ring and an elastic drawstring, the problems of complex manufacturing and difficult operation in the prior art are solved, and a balance between simplified operation and strength and flexibility is achieved, making the bag suitable for endoscopic surgery.
Patent Information
- Application Number
- CN202410272995.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-11
- Publication Date
- 2025-09-12
AI Technical Summary
Existing tissue retrieval bags are complex to manufacture and use multiple parts, which makes operation difficult and requires more training time.
A single-component tissue retrieval bag made of a plastic substrate is designed, including an embossed flat ring and an elastic drawstring. The bag opening is closed by actuating the drawstring. The drawstring is formed into a ring by a first portion, a second portion is arranged along the circumference of the opening, and a third portion extends through the ring.
It enables simpler operation, reduces training time, maintains strength and flexibility, and is suitable for easy removal of tissue during endoscopic surgery.
Smart Images
Figure CN120616634A_ABST
Abstract
Description
Technical Field
[0001] Engineering related to tissue retrieval bags used to remove tissue from a surgical site. Background Art
[0002] Endoscopic surgery involves making many tiny incisions or openings in the patient's body to perform the procedure. As a result, patients may need fewer days rather than weeks to recover. These surgeries can be used to remove diseased tissue or organs from areas of the body, such as the abdominal cavity, or to repair defects. Some surgeries involve removing or removing biological material or tissue from the body through small incisions, small natural orifices, or small-diameter laparoscopic access ports.
[0003] In order to enable the removal of tissue through a tiny opening, orifice or port during endoscopic surgery, several tissue retrieval bags or pouches have been developed. In addition, many tools have been developed to introduce, open, position, close, and remove tissue retrieval bags from a patient, as well as to remove the bag and the tissue contained therein from the surgical site.
[0004] However, existing or disclosed bags or pouches intended for this purpose typically include multiple components and are therefore complex to manufacture. The use of separate, multiple components also leads to additional difficulties in actual operation, requiring more training time for new practitioners. Therefore, there is a need to develop a simpler bag or pouch that still has an acceptable level of functionality, strength, and flexibility. Summary of the Invention
[0005] One of the objects of the present invention is to address the above-mentioned problems and create a simpler bag or pouch that strikes an appropriate balance between strength, flexibility, and functionality. A tissue retrieval bag for removing tissue from a surgical site comprises: an opening at a top portion; a body portion; and an elastic drawstring having a first end attached to the opening and a second end positioned away from the corresponding opening of the bag. The bag and the drawstring are formed as a single component from a plastic substrate. The first end of the drawstring, defined as a first portion of the drawstring, is attached to a predetermined partial opening area. A predetermined second portion of the drawstring, subsequent to the first portion, is arranged in a circular manner to form a loop. A predetermined third portion of the drawstring, subsequent to the second portion, toward the other end, is configured to be disposed along a circumferential portion of the opening and extend through the loop, thereby allowing the bag opening to be closed by actuation of the drawstring.
[0006] In one aspect, the opening of the bag further comprises an embossed planar ring, and the elastic drawstring is disposed partially along a circumferential portion of the opening on a surface of the embossed planar ring.
[0007] In another aspect, the embossed planar ring includes at least one groove for coupling at least a portion of an elastic draw cord to a designated area of the embossed planar ring.
[0008] In another aspect, the embossed planar loop includes at least one protruding edge formed as a hook member for securing at least a portion of an elastic draw cord to a designated area of the embossed planar loop.
[0009] In another aspect, the embossed planar ring includes a non-embossed structure and an embossed structure, wherein the vertical thickness of the embossed structure is in the range of 110% to 250% of the thickness of the non-embossed structure, preferably in the range of 120% to 220% of the thickness of the non-embossed structure, and the cross-sectional area of the embossed structure is in the range of 0.15 square millimeters to 1.5 square millimeters, preferably in the range of 0.25 square millimeters to 1.0 square millimeters. The ratio between the width of the circular ring and the vertical thickness of the embossed structure is preferably in the range of 5 to 100, preferably in the range of 10 to 75. The ratio between the diameter of the opening and the width of the circular ring can be in the range of 4 to 20, preferably in the range of 6 to 15.
[0010] In another aspect, the draw cord includes a tab at the distal end to allow capture of the draw cord at the tab.
[0011] In another aspect, the plastic substrate has a thickness of 100 to 500 microns.
[0012] In another aspect, the plastic substrate is a thermoplastic polymer, a polyolefin or a vinyl polymer, and preferably the plastic substrate is a polyethylene copolymer or a linear semicrystalline polyethylene-octene copolymer having a melt flow index in the range of 0.5 g / 10 min to 5 g / 10 min.
[0013] The objects and unique features and other aspects of the present invention will be described in more detail through the included embodiments and drawings, and the best mode will also be further described. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 A possible embodiment of a tissue retrieval bag according to the invention is shown. DETAILED DESCRIPTION
[0015] In order to make description clearer, the present invention will be described in more detail by way of example and with reference to the accompanying drawings. In these drawings, identical parts will be identified by identical reference numerals. However, providing more detailed description does not constitute any limitation to the scope of the present invention.
[0016] In this regard, the present invention can be implemented or applied in various ways. This disclosure will present different examples as references for implementations or applications with the same features. However, as mentioned above, providing these does not impose any limitations on the scope of the present invention.
[0017] A tissue retrieval bag for removing tissue from a surgical site, the bag 101 comprising: an opening at a top portion, and a body portion; an elastic drawstring 103 having a first end attached to the opening and a second end positioned away from the corresponding opening of the bag, wherein the bag and the drawstring are manufactured as a single component from a plastic substrate, the first end of the drawstring, defined as the first portion of the drawstring, is attached to a predetermined partial opening area, and a predetermined second portion of the drawstring, which is a subsequent portion of the first portion, is arranged in a circular manner to form a ring member, and a predetermined third portion of the drawstring, which is a subsequent portion of the second portion, toward the other end, is configured to be arranged along a circumferential portion of the opening and extend through the ring member, thereby allowing the opening of the bag to be closed by actuation of the drawstring. Figure 1 A possible embodiment of a tissue retrieval bag according to the invention is shown.
[0018] In a preferred embodiment, the bag opening further comprises an embossed planar ring 105, and the elastic drawstring is disposed partially along the circumference of the opening on the surface of the embossed planar ring. The embossed planar ring may include at least one groove 107 for attaching at least a portion of the elastic drawstring to a designated area of the embossed planar ring. Alternatively, the embossed planar ring may include at least one protruding edge formed as a hook-shaped member for securing at least a portion of the elastic drawstring to a designated area of the embossed planar ring. In a preferred embodiment, the drawstring may include a tab 109 at its distal end to allow the drawstring to be captured at the tab.
[0019] It should be noted that the removal line and container are combined into a single component. In a preferred embodiment, the embossed planar ring 105 includes a non-embossed structure and an embossed structure, wherein the vertical thickness of the embossed structure is in the range of 110% to 250% of the thickness of the non-embossed structure, preferably in the range of 120% to 220% of the thickness of the non-embossed structure, and the cross-sectional area of the embossed structure is in the range of 0.15 square millimeters to 1.5 square millimeters, preferably in the range of 0.25 square millimeters to 1.0 square millimeters. The ratio between the width of the circular ring and the vertical thickness of the embossed structure is preferably in the range of 5 to 100, preferably in the range of 10 to 75. The ratio of the diameter of the opening to the width of the circular ring may be in the range of 4 to 20, and preferably, the ratio of the diameter of the opening to the width of the circular ring is in the range of 6-15.
[0020] The shape of the embossed structure can be a geometric shape in part or in its entirety. Such geometric shapes can be selected from the group consisting of triangles, rectangles, circles, trapezoids, or combinations thereof. The overall embossed structure can be formed from a plurality of smaller structures positioned together in clusters on the surface, wherein the density of the smaller structures in the clusters is in the range of 10-200 per square inch, and preferably in the range of 40-120 per square inch on the planar surface of the ring.
[0021] In a preferred embodiment, the retrieval wire is extendable in the range of 150% to 600% and preferably in the range of 200% to 500% from the initial length.
[0022] In practice, a practitioner can perform the desired operation. After removing the biological material or tissue from the body, the physician can place the biological material or tissue from the body into a tissue retrieval bag. Thereafter, the physician can capture a portion of the drawstring, preferably near the end of the tab or at the tab, and pull the drawstring through the formed loop to narrow the opening and secure the biological material or tissue inside.
[0023] The tissue retrieval bag for removing tissue from a surgical site according to the present invention can be manufactured using a plastic substrate having a thickness ranging from 100 μm to 500 μm. This plastic substrate can be a thermoplastic polymer, a polyolefin, or a vinyl polymer. However, the tissue retrieval bag according to the present invention is preferably manufactured using a polyethylene copolymer or a linear semi-crystalline polyethylene-octene copolymer having a melt flow index ranging from 0.5 g / 10 min to 5 g / 10 min.
[0024] Although the present invention has been described in detail with reference to the accompanying drawings as examples, it should be understood that the present invention is intended to cover any modifications or solutions provided by those skilled in the art. The scope of the present invention is based on the claims and also covers any features of the present invention that are not explicitly included in the claims but still produce the same effect as the present invention.
[0025] The best way to invent
[0026] As disclosed in the disclosure of the present invention.
Claims
1. A tissue retrieval bag for removing tissue from a surgical site, the tissue retrieval bag comprising: an opening in the top portion, and a body portion; as well as an elastic drawstring (103) having a first end attached to the opening and a second end positioned away from a corresponding opening of the tissue retrieval bag, wherein the tissue retrieval bag and the elastic drawstring are manufactured as a single component from a plastic substrate, It is characterized in that the first end portion of the elastic pull rope, which is defined as the first portion (A) of the elastic pull rope, is attached to a predetermined partial opening area, and the predetermined second portion (B) of the elastic pull rope, which is a subsequent portion of the first portion, is arranged in a circular manner to form a ring member, and the predetermined third portion (C) of the elastic pull rope, which is a subsequent portion of the second portion, toward the other end portion is constructed to be arranged along the circumferential portion of the opening and extend through the ring member, thereby allowing the opening of the tissue retrieval bag to be closed by actuation of the elastic pull rope.
2. The tissue retrieval bag for removing tissue from a surgical site according to claim 1, wherein: The opening of the tissue retrieval bag further comprises an embossed planar ring (105), and the elastic drawstring is partially arranged on the surface of the embossed planar ring along the circumference of the opening.
3. The tissue retrieval bag for removing tissue from a surgical site according to claim 2, wherein: The embossed planar ring includes at least one groove (107) for coupling at least a portion of the elastic draw cord to a designated area of the embossed planar ring.
4. The tissue retrieval bag for removing tissue from a surgical site according to claim 2 or 3, wherein: The embossed planar loop includes at least one protruding edge formed as a hook-shaped member for securing at least a portion of the elastic draw cord to a designated area of the embossed planar loop.
5. The tissue retrieval bag for removing tissue from a surgical site according to claim 2 or 3, wherein: The embossed planar ring (105) includes a non-embossed structure and an embossed structure, wherein the vertical thickness of the embossed structure is in the range of 110% to 250% of the thickness of the non-embossed structure, and the cross-sectional area of the embossed structure is in the range of 0.15 square millimeters to 1.5 square millimeters.
6. The tissue retrieval bag for removing tissue from a surgical site according to claim 2 or 3, wherein: The embossed planar ring (105) comprises a non-embossed structure and an embossed structure, wherein the vertical thickness of the embossed structure is in the range of 120% to 220% of the thickness of the non-embossed structure.
7. The tissue retrieval bag for removing tissue from a surgical site according to claim 2 or 3, wherein: The embossed planar ring (105) comprises a non-embossed structure and an embossed structure, wherein the cross-sectional area of the embossed structure is in the range of 0.25 square millimeters to 1.0 square millimeters.
8. The tissue retrieval bag for removing tissue from a surgical site according to claim 5, wherein: The ratio between the width of the circular embossed planar ring and the vertical thickness of the embossed structure is in the range of 5 to 100.
9. The tissue retrieval bag for removing tissue from a surgical site according to claim 5, wherein: The ratio between the width of the circular embossed planar ring and the vertical thickness of the embossed structure is in the range of 10 to 75.
10. The tissue retrieval bag for removing tissue from a surgical site according to claim 8, wherein: The ratio of the diameter of the opening to the width of the circular embossed planar ring is in the range of 4 to 20.
11. The tissue retrieval bag for removing tissue from a surgical site according to claim 8, wherein: The ratio of the diameter of the opening to the width of the circular embossed planar ring is in the range of 6 to 15.
12. The tissue retrieval bag for removing tissue from a surgical site according to claim 1, wherein: The elastic draw cord includes a tab (109) at a distal end portion to allow capture of the elastic draw cord at the tab.
13. The tissue retrieval bag for removing tissue from a surgical site according to claim 1, wherein: The plastic substrate has a thickness in a range of 100 micrometers to 500 micrometers.
14. The tissue retrieval bag for removing tissue from a surgical site according to claim 1, wherein: The plastic substrate is a thermoplastic polymer, a polyolefin or a vinyl polymer.
15. The tissue retrieval bag for removing tissue from a surgical site according to claim 1, wherein: The plastic substrate is a polyethylene copolymer or a linear semi-crystalline polyethylene-octene copolymer having a melt flow index in the range of 0.5 g / 10 min to 5 g / 10 min.