Tissue removal pouch for removing tissue from a surgical siteTechnical Field
An engineering associated with a tissue extraction pouch for extracting tissue from a surgical site.
Background
Endoscopic surgery involves making numerous tiny incisions or openings in a patient to perform the procedure. Thus, the patient may take less days to heal rather than weeks. These procedures may remove diseased tissue or organs from body parts such as the abdominal cavity, or repair body defects. Some procedures involve the removal or removal of biological material or tissue from the body through small incisions, small natural orifices, or small diameter laparoscopic access ports.
In order to be able to remove tissue through tiny openings, ports or ports during endoscopic surgery, several tissue retrieval bags or pouches have been developed. In addition, a number of tools have been developed to introduce, open, position, close and remove tissue extraction bags from patients, as well as remove bags and the tissue they contain from the surgical site.
However, existing or disclosed bags or pouches intended for this purpose typically comprise multiple parts and are therefore complex to manufacture. The use of separate components also results in additional difficulties in the actual operation, requiring more training time for the new practitioner. Thus, there is a need to develop a simpler bag or pouch that still has an acceptable level of functionality, strength and flexibility.
Disclosure of Invention
It is an object of the present invention to solve the above problems and to create a simpler bag or pouch which achieves a suitable balance between strength, flexibility and functionality. A tissue retrieval bag for retrieving tissue from a surgical site, the bag comprising an opening at a top portion, and a body portion, and a resilient drawstring having a first end attached to the opening and a second end positioned away from a corresponding opening of the bag, wherein the bag and drawstring are made of a plastic substrate as a single member, the first end of the drawstring defined as a first portion of the drawstring is attached to a predetermined partial opening area, and a predetermined second portion of the drawstring that is a subsequent portion of the first portion is arranged in a circular manner to form a loop, and a predetermined third portion of the drawstring that is a subsequent portion of the second portion that is oriented towards the other end is configured to be disposed along a circumferential portion of the opening and extend through the loop, thereby allowing the opening of the bag to be closed by actuation of the drawstring.
In one aspect, the opening of the bag further comprises an embossed planar ring, and the elastic drawstring is disposed on a surface of the embossed planar ring partially along a circumferential portion of the opening.
In another aspect, the embossed planar ring includes at least one groove for coupling at least a portion of the elastic pull cord to a designated area of the embossed planar ring.
In another aspect, the embossed planar ring includes at least one protruding edge formed as a hook member for securing at least a portion of the elastic cord to a designated area of the embossed planar ring.
In another aspect, the embossed planar ring comprises an unembossed 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 unembossed structure, preferably the vertical thickness of the unembossed structure is in the range of 120% to 220% of the thickness of the unembossed 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 the cross-sectional area of the embossed structure is in the range of 0.25 square millimeters to 1.0 square millimeters, as compared to the thickness of the unembossed structure. 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 the ratio between the width of the circular ring and the vertical thickness of the embossed structure is 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 in the range of 6 to 15.
In another aspect, the pull cord includes a tab at the distal end to allow the pull cord to be captured at the tab.
In another aspect, the plastic substrate has a thickness of 100 to 500 microns.
In another aspect, the plastic substrate is a thermoplastic polymer, polyolefin or vinyl polymer, and preferably 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.
The objects and unique features of the present invention, as well as other aspects, will be described in more detail by the included embodiments and drawings, and the best mode will be further described.
Drawings
Fig. 1 shows a possible embodiment of a tissue retrieval bag according to the present invention.
Detailed Description
For the purpose of making the description clearer, the invention will be described in more detail by way of example and with reference to the accompanying drawings. Like parts in the drawings will be identified by like reference numerals. However, the more detailed description is provided without limiting the scope of the invention in any way.
In this regard, the invention may be implemented or applied in a variety of ways. The present disclosure will present different examples as references to implementations or applications having the same features. However, as mentioned above, the provision of these does not limit the scope of the present invention in any way.
A tissue retrieval bag for retrieving 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 a corresponding opening of the bag, wherein the bag and the drawstring are manufactured from a plastic base material as a single member, the first end of the drawstring defined as a first portion of the drawstring is attached to a predetermined partial opening area, and a predetermined second portion of the drawstring as a subsequent portion of the first portion is arranged in a circular manner to form a loop, and a predetermined third portion of the drawstring as a subsequent portion of 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 opening of the bag to be closed by actuation of the drawstring. Fig. 1 shows a possible embodiment of a tissue retrieval bag according to the present invention.
In a preferred embodiment, the opening of the bag further comprises an embossed planar ring 105 and the elastic pull cord is provided on the surface of the embossed planar ring partially along the circumferential portion of the opening. The embossed planar ring may include at least one groove 107 for coupling at least a portion of the elastic cord to a designated area of the embossed planar ring. Alternatively, the embossed planar ring includes at least one protruding edge formed as a hook member for securing at least a portion of the elastic cord to a designated area of the embossed planar ring. In a preferred embodiment, the pull cord may include a tab 109 at the distal end to allow the pull cord to be captured at the tab.
It should be noted that the combination of the withdrawal string and the container is a single member. In a preferred embodiment, the embossed planar ring 105 comprises an unembossed 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 unembossed structure, preferably the vertical thickness of the unembossed structure is in the range of 120% to 220% of the thickness of the unembossed 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 the cross-sectional area of the embossed structure is in the range of 0.25 square millimeters to 1.0 square millimeters, as compared to the thickness of the unembossed structure. 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 the ratio between the width of the circular ring and the vertical thickness of the embossed structure is 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.
The shape of the embossed structure may be partially or wholly geometric. Such geometry may be selected from the group consisting of triangular, rectangular, circular, trapezoidal or a combination of group members thereof. The unitary embossed structure may be formed from a plurality of smaller structures positioned together in clusters on a surface, wherein the density of the smaller structures in the clusters is in the range of 10-200 per square inch, and preferably 40-120 per square inch on the planar surface of the ring.
In a preferred embodiment, the withdrawal string can extend from the initial length in the range of 150% to 600%, and preferably in the range of 200% to 500%.
In practice, the practitioner can perform the desired operation. After removing the biological material or tissue from the body, the physician may place such biological material or tissue from the body into a tissue removal pouch. Thereafter, the physician may capture a portion of the drawstring, preferably at or near the end of the tab, and pull the drawstring through the formed loop to constrict the opening and secure the biological material or tissue inside.
Tissue-removing pouches for removing tissue from a surgical site according to the present invention can be manufactured using plastic substrates having a thickness in the range of 100 microns to 500 microns. Such plastic substrates may be thermoplastic polymers, polyolefin or vinyl polymers. However, it is preferred to use a polyethylene copolymer or 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 to make tissue retrieval bags according to the present invention.
Although the invention has been described in detail by way of example with reference to the accompanying drawings, it is to be understood that the invention is intended to cover any modifications or arrangements provided by those skilled in the art. The scope of the invention is based on the claims and also covers any inventive features not explicitly covered by the claims but which nevertheless produce the same effect as the present invention.
Best mode for carrying out the invention
As disclosed in the present disclosure.