Tool for treating excised end of body organ

Patent metadata

Field	Value
Publication number	US-11337704-B2
Application number	US-201816641623-A
Country	US
Kind code	B2
Filing date	Aug 24, 2018
Priority date	Aug 24, 2017
Publication date	May 24, 2022
Grant date	May 24, 2022

Abstract

This tool is for treating an excised end of a body organ and is provided with: a long and thin, flexible first band section having a distal end and a proximal end that are made of a biodegradable-absorptive polymer; a long and thin, flexible second band section having a distal end and a proximal end that are made of a biodegradable-absorptive polymer; and a first locking section having a first ratchet claw made of a biodegradable-absorptive polymer, wherein the first locking section is formed at the distal end of the second band section, the distal end of the first band section and the proximal end of the second band section are joined together, at least one ratchet tooth that is capable of meshing with the first ratchet claw is formed on the external surface of the first band section, and the engagement of the ratchet tooth with the first ratchet claw forms a flattened ring which is used to bind a body organ so as to ligate a tube or cavity that opens at an excised end of the body organ.

First claim

The invention claimed is:

1. An organ stump treatment tool comprising:
an elongated flexible band portion having a distal end and a proximal end, wherein the elongated flexible band portion is flexible from the proximal end to the distal end, and
a locking portion comprising a second interlocking part,
wherein the locking portion is at the distal end of the band portion, and
the band portion comprises a flexed part between the distal end and the proximal end, and comprises a first interlocking part between the flexed part and the proximal end for meshing engagement with the second interlocking part, wherein the flexed part is a part inflected to be recessed inwardly and is maintained in the inflected shape,
whereby the meshing engagement of the first interlocking part with the second interlocking part makes a flattened ring with the flexed part recessed inwardly in, and the flattened ring being configured to bind an organ tightly to ligate a duct or lumen that opens at a stump of the organ.

2. The organ stump treatment tool according to claim 1 , further comprising a covering member.

3. The organ stump treatment tool according to claim 2 , wherein the covering member is made of a biodegradable and bioabsorbable polymer.

4. The organ stump treatment tool according to claim 1 , wherein the elongated flexible band portion is made of a biodegradable and bioabsorbable polymer, and the locking portion comprising the second interlocking part is made of a biodegradable and bioabsorbable polymer.

5. The organ stump treatment tool according to claim 1 , wherein the locking portion is on the outer surface of the band portion.

6. An organ stump treatment tool comprising:
an elongated flexible first band portion having a distal end and a proximal end;
an elongated flexible second band portion having a distal end and a proximal end; and
a first locking portion comprising a first ratchet pawl, wherein the first locking portion is at the distal end of the second band portion,
the distal end of the first band portion and the proximal end of the second band portion are joined so as to form a flexed part which is a part inflected to be recessed inwardly and is maintained in the inflected shape, and
at least one ratchet tooth capable of being meshed with the first ratchet pawl is on an outer surface of the first band portion,
whereby meshing engagement of the at least one ratchet tooth with the first ratchet pawl makes a flattened ring with the flexed part recessed inwardly in, and the flattened ring being configured to bind an organ tightly to ligate a duct or lumen that opens at a stump of the organ.

7. The organ stump treatment tool according to claim 6 , wherein at least one of the first band portion and the second band portion has an inner surface where at least one convex strip is formed to extend in a lengthwise direction.

8. The organ stump treatment tool according to claim 6 , further comprising a tongue part, in the vicinity of the first locking portion, for preventing an organ tissue from getting caught in the organ stump treatment tool.

9. The organ stump treatment tool according to claim 6 , wherein the distal end of the first band portion and the proximal end of the second band portion are joined at an angle smaller than a right angle so as to define a nonangular and smooth inner surface.

10. The organ stump treatment tool according to claim 6 , further comprising a second locking portion comprising a second ratchet pawl, wherein
the first ratchet pawl is configured to be allowed to be released from meshing engagement with the at least one ratchet tooth meshed with the first ratchet pawl, and the second ratchet pawl is configured to be prohibited from being released from meshing engagement with the at least one ratchet tooth once meshed with the second ratchet pawl.

11. The organ stump treatment tool according to claim 10 , wherein the second locking portion is made of a biodegradable and bioabsorbable polymer.

12. The organ stump treatment tool according to claim 6 , wherein the first band portion or the second band portion comprises holes having openings aligned in a lengthwise direction.

13. The organ stump treatment tool according to claim 6 , wherein the elongated flexible first band portion is made of a biodegradable and bioabsorbable polymer, the elongated flexible second band portion is made of a biodegradable and bioabsorbable polymer, and the first locking portion is made of a biodegradable and bioabsorbable polymer.

14. An organ stump treatment tool comprising:
an elongated flexible first band portion having a distal end and a proximal end;
an elongated flexible second band portion having a distal end and a proximal end; and
a first locking portion comprising a first ratchet pawl, wherein the first locking portion is at the distal end of the second band portion,
the distal end of the first band portion and the proximal end of the second band portion are joined so as to flex the first band portion and the second band portion, and
at least one ratchet tooth capable of being meshed with the first ratchet pawl is on an outer surface of the first band portion,
whereby meshing engagement of the at least one ratchet tooth with the first ratchet pawl makes a flattened ring which there is a flexed part recessed inwardly in, and the flattened ring being configured to bind an organ tightly to ligate a duct or lumen that opens at a stump of the organ, wherein at least one of the first band portion and the second band portion has an inner surface where at least one convex strip is formed to extend in a lengthwise direction.

15. An organ stump treatment tool comprising:
an elongated flexible first band portion having a distal end and a proximal end;
an elongated flexible second band portion having a distal end and a proximal end; and
a first locking portion comprising a first ratchet pawl, wherein the first locking portion is at the distal end of the second band portion,
the distal end of the first band portion and the proximal end of the second band portion are joined so as to flex the first band portion and the second band portion, and
at least one ratchet tooth capable of being meshed with the first ratchet pawl is on an outer surface of the first band portion,
whereby meshing engagement of the at least one ratchet tooth with the first ratchet pawl makes a flattened ring which there is a flexed part recessed inwardly in, and the flattened ring being configured to bind an organ tightly to ligate a duct or lumen that opens at a stump of the organ, and
the organ stump treatment tool further comprising a second locking portion comprising a second ratchet pawl, wherein
the first ratchet pawl is configured to be allowed to be released from meshing engagement with the at least one ratchet tooth meshed with the first ratchet pawl, and the second ratchet pawl is configured to be prohibited from being released from meshing engagement with the at least one ratchet tooth once meshed with the second ratchet pawl.

16. The organ stump treatment tool according to claim 15 , wherein the second locking portion is made of a biodegradable and bioabsorbable polymer.

17. An organ stump treatment tool comprising:
an elongated flexible first band portion having a distal end and a proximal end;
an elongated flexible second band portion having a distal end and a proximal end; and
a first locking portion comprising a first ratchet pawl, wherein the first locking portion is at the distal end of the second band portion,
the distal end of the first band portion and the proximal end

Assignees

• Univ Jichi Medical

Inventors

• Kaneda Yuji

Classifications

• A61B17/12009 Primary

  Implements for ligaturing other than by clamps or clips, e.g. using a loop with a slip knot · CPC title

• A61B2017/12004

  for haemostasis, for prevention of bleeding · CPC title

• A61B2017/12018

  Elastic band ligators · CPC title

• A61B17/1322

  comprising a flexible encircling member (A61B17/135 takes precedence) · CPC title

• A61L31/148

  Materials at least partially resorbable by the body · CPC title