CN-122004719-A - Endoscopic treatment device and method for manufacturing an endoscopic treatment device

Abstract

An endoscope treatment device has a sheath, a rotation shaft extending in a width direction orthogonal to a longitudinal direction of the sheath, a plate formed with a first opening through which the rotation shaft passes and a second opening having a different size from the first opening, a forceps member rotatably supported around the rotation shaft passing through the first opening and the second opening, and a wire connected to a proximal end portion of the plate.

Inventors

• OKAMOTO HARUKI
• HANAI TAKAAKI
• Watanabe Yarn Processing
• NOMURA YUSUKE
• Lai Tianlong
• Tang Jiang Shi

Assignees

• 奥林巴斯医疗株式会社

Dates

Publication Date

20260512

Application Date

20220613

Priority Date

20210615

Claims (20)

1. 1. An endoscopic treatment device comprising: A sheath; A support member attached to a distal end of the sheath; a pin attached to the distal end of the support member, and A forceps comprising a first member, a second member, and a third member, wherein the second member is positioned between the first member and the third member, wherein the forceps comprises a first forceps member and a second forceps member, Wherein the first member has a first hole through which the pin passes, the second member has a second hole through which the pin passes, and the third member has a third hole through which the pin passes, and Wherein the first bore has a first inner diameter, the second bore has a second inner diameter, and the third bore has a third inner diameter, wherein the third inner diameter is smaller in size than the second inner diameter.
2. 2. The endoscopic treatment device according to claim 1, Wherein the first member, the second member, and the third member are connected by the pin.
3. 3. The endoscopic treatment device according to claim 1, Wherein two of the first member, the second member, and the third member are formed by folding a single sheet of material.
4. 4. The endoscopic treatment device according to claim 1, Wherein the entire inner peripheral surface of the third hole is located inside the inner peripheral surface of the second hole as viewed in a direction along the central axis of the second hole.
5. 5. The endoscopic treatment device according to claim 1, Wherein the first and second members are components of the first forceps member and the third member is a component of the second forceps member.
6. 6. The endoscopic treatment device according to claim 1, Wherein a fourth member is located between the second member and the third member, and the fourth member has a fourth aperture.
7. 7. The endoscopic treatment device according to claim 5, Wherein the fourth bore has a different inner diameter than the third bore.
8. 8. The endoscopic treatment device according to claim 6, Wherein the fourth member is a component of the second forceps member.
9. 9. The endoscopic treatment device according to claim 1, further comprising a wire connected to the proximal end of the first forceps member, Wherein the first member includes a proximal third aperture proximal to the first aperture, the second member includes a proximal fourth aperture proximal to the second aperture, Wherein the proximal third bore has a fourth inner diameter, the proximal fourth bore has a fifth inner diameter, and the fourth inner diameter is greater than the fifth inner diameter, and Wherein a portion of the wire passes through the proximal third aperture and the proximal fourth aperture.
10. 10. The endoscopic treatment device according to claim 9, Wherein the entire inner peripheral surface of the proximal fourth hole is located within the inner peripheral surface of the proximal third hole in a direction along the central axis of the proximal third hole.
11. 11. The endoscopic treatment device according to claim 9, Wherein a portion of the inner peripheral surface of the proximal fourth hole is located outside the inner peripheral surface of the proximal third hole in a direction along the central axis of the proximal third hole.
12. 12. An endoscopic treatment device comprising: A sheath; A support member attached to a distal end of the sheath, the support member having a pair of frame portions at a distal end thereof; a rotating shaft coupled to the ends of the pair of frame portions, wherein the rotating shaft connects the pair of frame portions, and A forceps comprising a first member, a second member, and a third member, wherein the second member is positioned between the first member and the third member, wherein the forceps comprises a first forceps member and a second forceps member, Wherein the first member and the third member are located between the pair of frame portions, Wherein the first member has a first hole through which the rotation shaft passes, the second member has a second hole through which the rotation shaft passes, and the third member has a third hole through which the rotation shaft passes, and Wherein the first bore has a first inner diameter, the second bore has a second inner diameter, and the third bore has a third inner diameter, wherein the third inner diameter is smaller in size than the second inner diameter.
13. 13. The endoscopic treatment device according to claim 12, Wherein the first member, the second member, and the third member are connected by the rotation shaft.
14. 14. The endoscopic treatment device according to claim 12, Wherein two of the first member, the second member, and the third member are formed by folding a single sheet of material.
15. 15. The endoscopic treatment device according to claim 12, Wherein the entire inner peripheral surface of the third hole is located inside the inner peripheral surface of the second hole as viewed in a direction along the central axis of the second hole.
16. 16. The endoscopic treatment device according to claim 12, Wherein the first and second members are components of the first forceps member and the third member is a component of the second forceps member.
17. 17. The endoscopic treatment device according to claim 12, Wherein a fourth member is located between the second member and the third member, and the fourth member has a fourth aperture.
18. 18. The endoscopic treatment device according to claim 17, Wherein the fourth bore has a different inner diameter than the third bore.
19. 19. The endoscopic treatment device according to claim 18, Wherein the fourth member is a component of the second forceps member.
20. 20. The endoscopic treatment device according to claim 12, further comprising a wire connected to the proximal end of the first forceps member, Wherein the first member includes a proximal third aperture proximal to the first aperture, the second member includes a proximal fourth aperture proximal to the second aperture, Wherein the proximal third bore has a fourth inner diameter, the proximal fourth bore has a fifth inner diameter, and the fourth inner diameter is greater than the fifth inner diameter, and Wherein a portion of the wire passes through the proximal third aperture and the proximal fourth aperture.

Description

Endoscopic treatment device and method for manufacturing an endoscopic treatment device The present application is a divisional application of application number 202210666855.2, application number 2022, 6, 13, and entitled "endoscopic treatment device and method for manufacturing endoscopic treatment device". Cross Reference to Related Applications The present application claims the rights of U.S. provisional patent application No. 63/210,727, entitled "endoscopic treatment tool and method for manufacturing an endoscopic treatment tool," filed on 6/15 of 2021, the entire contents of which are incorporated herein by reference. Technical Field The present invention relates to a treatment device for an endoscope and a method for manufacturing a treatment device for an endoscope. Background Heretofore, an endoscopic treatment tool such as a biopsy forceps has been used for endoscopic treatment. Since an endoscopic treatment instrument such as a biopsy forceps is a disposable product (disposable product), it is desirable to achieve low cost while having high performance. Disclosure of Invention One embodiment of the present invention provides an endoscope treatment device including a sheath, a rotation shaft extending in a width direction perpendicular to a longitudinal direction of the sheath, a forceps member having a plate formed with a first opening and a second opening through which the rotation shaft passes, a dimension of the first opening in a direction perpendicular to a rotation axis of the rotation shaft being different from a dimension of the second opening in a direction perpendicular to the rotation axis of the rotation shaft, and a wire rotatably supported around the rotation shaft, wherein the rotation shaft is rotatably mated with respect to an opening of the first opening and the second opening having a smaller dimension in a direction perpendicular to the rotation axis, and the wire is connected to a proximal end of the plate. In some embodiments, the endoscope treatment device further comprises a pair of frame members attached to the front end of the sheath, wherein the rotation shaft is engaged with the ends of the pair of frame members, and wherein the rotation shaft extends between the pair of frame members and the plate is disposed between the pair of frame members. In some embodiments, the plate includes a first member having a first opening and a second member having a second opening, and at least a portion of the second member and the first member are curved regions disposed between the first opening and the second opening such that the curved regions are boundaries that overlap when viewed from a width direction. In some embodiments, the first opening is a first hole having a first inner diameter and the second opening is a second hole having a second inner diameter, the first inner diameter being greater than the second inner diameter. The inner peripheral surface of the second hole may be located within the inner peripheral surface of the first hole in a direction along the central axis of the first hole. In some embodiments, a portion of the entire circumference of the outer circumferential surface of the second hole is located outside the inner circumferential surface of the first hole in a direction along the central axis of the first hole. In some embodiments, the second member is located closer to the central axis of the sheath than the first member. In some embodiments, the first member includes a third bore having a third inner diameter proximal to the first bore, and the second member includes a fourth bore having a fourth inner diameter proximal to the second bore, the third inner diameter being greater than the fourth inner diameter and a portion of the wire passing through the third bore and the fourth bore. In some embodiments, the entire inner peripheral surface of the fourth hole is located within the inner peripheral surface of the third hole, as viewed in a direction along the central axis of the third hole. A part of the entire circumference of the inner circumferential surface of the fourth hole may be located outside the inner circumferential surface of the third hole, as viewed in a direction along the central axis of the third hole. In some embodiments, the second inner diameter is greater than the third inner diameter and less than the first inner diameter. In some embodiments, the forceps members include a first forceps member and a second forceps member, and the plates are first and second plates, the first plate including first and second members, and the second plate having a third member with a fifth aperture through which the rotation shaft passes. In some embodiments, the second panel further comprises a fourth member with a sixth aperture, wherein the second panel is folded to have a border region between the fifth aperture and the sixth aperture, and at least a portion of the fourth member and the third member overlap each other when viewed from the wi