# US 2019/0167265 A1 · Tissue closure device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0167265 A1 - Document ID: US20190167265A1 - Status: Published application - Kind: A1 - Application number: 16/323,771 - Filed: 2016-12-26 - Published: 2019-06-06 - Earliest claimed: 2016-08-08 - Assignees: Touchstone International Medical Science Co., Ltd. - Applicants: Touchstone International Medical Science Co., Ltd. - Inventors: Wangdong CHEN; Teng SHAN; Tuo SHU - Web page: https://patentgrep.com/patent/US20190167265A1 ## CPC - A61B 17/072: for applying a row of staples in a single action, e.g. the staples being applied simultaneously - A61B 17/1114: {of the digestive tract, e.g. bowels or oesophagus} - A61B 17/115: Staplers for performing anastomosis, e.g. in a single operation - A61B 17/12013: {for use in minimally invasive surgery, e.g. endoscopic surgery} - A61B 17/122: Clamps or clips, e.g. for the umbilical cord {(for the vas deferens A61F6/206)} - A61B 17/1285: {for minimally invasive surgery} - A61B 17/3209: Incision instruments - A61B 2017/00818: {Treatment of the gastro-intestinal system} - A61B 2017/0647: {having one single leg, e.g. tacks} - A61B 2017/07214: {Stapler heads} - A61B 2017/07285: {characterised by its cutter} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract The present invention provides a tissue closure device, comprising: a first and a second clamping base which form a cavity there between for accommodating a tubular tissue; and a pouch assembly comprises: a tying band provided with a first free end and a second free end; a first tying band buckle which is arranged adjacent to the first free end in an initial state; a second tying band buckle arranged adjacent to the second free end in an initial state, wherein the second tying band buckle is buckled with the first tying band buckle after the first and the second clamping base are closed; and a first driving mechanism which enables the first and the second tying band buckle to move synchronously after the first and the second tying band buckle are buckled and then cooperate with the tying band to gather the tubular tissue into a pouch. ## Claims ### Claim 1 A tissue closure device, comprising: a first clamping base and a second clamping base which may be opened and closed oppositely and form a cavity therebetween for accommodating a tubular tissue when being closed; and a pouch assembly arranged to cooperate with the first clamping base and the second clamping base, wherein the pouch assembly comprises: a tying band which extends along the side, facing the cavity, of each of the first clamping base and the second clamping base, and is provided with a first free end located at the distal end of the first clamping base and a second free end located at the distal end of the second clamping base; a first tying band buckle which is slidably arranged on the tying band in a penetrating manner and arranged adjacent to the first free end in an initial state; a second tying band buckle which is slidably arranged on the tying band in a penetrating manner and arranged adjacent to the second free end in an initial state, wherein the second tying band buckle is opposite to the first tying band buckle and buckled with the first tying band buckle after the tubular tissue is accommodated in the cavity and the first clamping base and the second clamping base are closed; and a first driving mechanism which enables the first tying band buckle and the second tying band buckle to move synchronously relative to the tying band after the first tying band buckle and the second tying band buckle are buckled and then cooperate with the tying band to gather the tubular tissue into a pouch. ### Claim 2 (canceled) ### Claim 3 (depends on 1) The tissue closure device according to claim 1, wherein the first driving mechanism comprises: a first sliding block which is arranged on the first clamping base in a sliding manner along the axial direction of the first clamping base and is abutted against the side, facing the first free end, of the first tying band; a second sliding block which is arranged on the second clamping base in a sliding manner along the axial direction of the second clamping base and is abutted against the side, facing the second free end, of the second tying band; and a transmission mechanism arranged to cooperate with the first sliding block, wherein when the tissue closure device is in an initial state, the first sliding block and the second sliding block are respectively located at the distal ends of the first clamping base and the second clamping base, and the first tying band buckle and the second tying band buckle are staggered; after the first clamping base and the second clamping base are oppositely opened to accommodate the tubular tissue in the cavity, the transmission mechanism drives the first sliding block to move towards a proximal end to a first position, then the first clamping base and the second clamping base are closed, the first tying band buckle and the second tying band buckle are buckled together, and the first sliding block and the second sliding block are mutually positioned, and finally, the transmission mechanism continuously drives the first sliding block and the second sliding block to move towards the proximal end at the same time, so that the tubular tissue is gathered towards the proximal end to form a pouch. ### Claim 4 (canceled) ### Claim 5 (depends on 3) The tissue closure device according to claim 3, wherein the tying band comprises a first tying band and a second tying band arranged at an interval side by side along a radial direction; the pouch assembly comprises two groups of the first tying band buckles and second tying band buckles corresponding to the first tying band and the second tying band respectively; the first sliding block is abutted against and cooperates with two first tying band buckles at the same time; and the second sliding block is abutted against and cooperates with two second tying band buckles at the same time. ### Claim 6 (depends on 5) The tissue closure device according to claim 5, wherein each of the first clamping base and the second clamping base is provided with a first sliding rod and a second sliding rod which are arranged at an interval in the radial direction and correspond to the first tying band and the second tying band respectively; a tying band groove for positioning the tying band is recessed at the side, facing the cavity, of each of the first sliding rod and the second sliding rod; the first sliding block and the second sliding block are arranged on the first sliding rod and the second sliding rod in a penetrating manner respectively, and are respectively provided with perforation holes for allowing the tying band to pass through, at the side adjacent to the first tying band buckle or the second tying band buckle; each of the first sliding block and the second sliding block is further provided with a limiting surface propped against the surfaces of the first sliding rod and the second sliding rod facing the cavity; and the limiting surface is limited to the outer side of the tying band groove so as to limit the tying band within the tying band groove. ### Claim at position 7 7-8. (canceled) ### Claim 9 (depends on 5) The tissue closure device according to claim 5, wherein the tissue closure device further comprises: a cutting knife arranged on the first clamping base, located between the first tying band and the second tying band and provided with a knife head protruding towards the cavity; and a cutting knife triggering mechanism driving the cutting knife to move towards the distal end to cut through the tubular tissue between the first tying band and the second tying band when the portions, corresponding to the first tying band and the second tying band respectively, of the tubular tissue are gathered to form the pouch. ### Claim 10 (depends on 9) The tissue closure device according to claim 9, wherein the tissue closure device further comprises: a tying band cutting mechanism rotatablely arranged in the first sliding block and the second sliding block and provided with a knife edge opposite to the tying band and a guide portion corresponding to the cutting knife axially, wherein each of the first sliding block and the second sliding block is provided with an accommodation portion for accommodating the tying band cutting mechanism and a slit for allowing the cutting knife to stretch into the accommodation portion; the accommodation portion is communicated with the tying band groove; and when a cutting knife triggering mechanism drives the cutting knife to move towards a distal end, the cutting knife passes through the slit, stretches into the accommodation portion and cooperates with the guide portion to rotate the tying band cutting mechanism, whereupon the knife edge applies a force to the tying band to cut off the tying band. ### Claim 11 (depends on 9) The tissue closure device according to claim 9, wherein the cutting knife is further provided with a knife rod connected to the distal end of the knife head; both the knife rod and the knife head are sheet-like and are integrally formed; the cutting knife is in a single-sheet arrangement or multi-sheet arrangement; when the cutting knife is in the multi-sheet arrangement, the cutting knife comprises at least two groups of the knife rods and knife heads which correspond to each other and are stacked together along the thickness direction of the cutting knife to cut through the tubular tissue together. ### Claim 12 (canceled) ### Claim 13 (depends on 1) The tissue closure device according to claim 1, wherein the first free end and the second free end of the tying band extend from the proximal end to the distal end and are then reversely bent to extend around basic shafts arranged on the first clamping base and the second clamping base from the distal ends of the first clamping base and the second clamping base respectively; and the first driving mechanism is a pulling band which passes through the first clamping base and the second clamping base from the proximal end and is fixed to the first free end and the second free end. ### Claim 14 (depends on 1) The tissue closure device according to claim 1, wherein the tying band is bent to be U-shaped and is provided with a connection portion located at the proximal end, main body portions connected between the connection portion and the first free end as well as the second free end, and a thorn protruding from the connection portion and/or a position, adjacent to the connection portion, of the main body portion into the cavity. ### Claim 15 (depends on 14) The tissue closure device according to claim 14, wherein the thorn protrudes from an intermediate position of the connection portion into the cavity. ### Claim at position 15 16-20. (canceled) ### Claim 21 (depends on 14) The tissue closure device according to claim 14, wherein a first ratchet for unidirectionally and cooperatively sliding with the first tying band buckle or the second tying band buckle is arranged at the side, facing the cavity, of the main body portion; each of the first tying band buckle and the second tying band buckle is provided with a sleeve portion slidably sleeving the tying band, a restriction portion protruding from the sleeve portion towards one side of the cavity, and a positioning buckle connected to the lower side of the sleeve portion; and the restriction portion is provided with a second ratchet unidirectionally cooperating with the first ratchet. ### Claim 22 (depends on 1) The tissue closure device according to claim 1, comprising: an instrument body provided with a main body and a first connection mechanism arranged at the distal end of the main body; a tissue closure unit which is provided with a second connection mechanism arranged at the proximal end and on which the first clamping base, the second clamping base and the pouch assembly are arranged, and an adapter which is connected between the instrument body and the tissue closure unit and is provided with an adapter body, a pair of first ear portions protruding from two sides of the adapter body towards the instrument body and a pair of second ear portions protruding from the two sides of the adapter body towards the tissue closure unit, wherein the first ear portion rotationally cooperates with the first connection mechanism through a pivot shaft, the second ear portion cooperates with the second connection mechanism through a pivot shaft, and the first ear portion and the second ear portion are aligned with each other along the axial direction of the adapter; and a driving element which passes through the instrument body and the adapter and is fixed to the tissue closure unit, wherein the fixing position of the driving element on the tissue closure unit is located between the second ear portions and deviates from the axis of the tissue closure unit. ### Claim at position 18 23-24. (canceled) ### Claim 25 (depends on 22) The tissue closure device according to claim 22, wherein a limiting structure for limiting the rotating angle of the first ear portion or the second ear portion is arranged on each of the first connection mechanism and the second connection mechanism and at each of two sides of the pivot shaft. ### Claim 26 (canceled) ### Claim 27 (depends on 25) The tissue closure device according to claim 25, wherein a recess portion for accommodating the first ear portion or the second ear portion is arranged on each of the first connection mechanism and the second connection mechanism; the connection position of the pivot shaft is located at the intermediate position of the recess portion; and inner wall surfaces, located at two sides of the pivot shaft, of the recess portion are formed as the limiting structures. ### Claim 28 (canceled) ### Claim 29 (depends on 22) The tissue closure device according to claim 22, wherein each of the first connection mechanism and the second connection mechanism is a pair of lugs protruding towards the adapter; and a make-way space for making way for the adapter body when the tissue closure unit is driven to rotate is formed between the lugs. ### Claim 30 (depends on 22) The tissue closure device according to claim 22, wherein the outer diameter of the adapter is the same as the outer diameter at the first connection mechanism and the second connection mechanism, and the tissue closure device is further provided with a sleeve arranged at the outer side of the adapter.