一种人体眼球组织取样装置

Abstract

本实用新型涉及一种人体眼球组织取样装置，属于医疗器械技术领域，解决了现有技术中在眼球上直接切取大块眼组织，对患者眼球造成的创伤大的问题。本实用新型包括切割单元和牵引单元，所述切割单元与所述牵引单元连接；所述切割单元用于插入患者眼球，所述牵引单元用于从眼球中拉出所述切割单元以及由所述切割单元切除的小梁网组织和Schlemm管壁组织。向眼球外牵拉本实用新型的切割单元，第一环形切割刀仅切除不大于第一环形切割刀外径的一段小梁网组织和Schlemm管壁组织，不涉及小梁网和Schlemm管的周边眼组织，对患者眼球造成的创伤小，操作简便，手术效率高。

Claims

1. An ocular tissue sampling device for a human eye, comprising: It includes a cutting unit (1) and a traction unit (2), the cutting unit (1) being connected to the traction unit (2); the cutting unit (1) is used to insert into the patient's eyeball, and the traction unit (2) is used to pull the cutting unit (1) and the trabecular meshwork tissue and Schlemm canal wall tissue removed by the cutting unit (1) from the eyeball; The cutting unit (1) includes a first annular cutting blade (11), a first sample cavity (12) and a guide (13). The first annular cutting blade (11) is disposed on the guide (13). The hollow portion of the first annular cutting blade (11) forms the first sample cavity (12). The traction unit (2) is connected to the first sample cavity (12). The guide part (13) is used to guide the first annular cutting blade (11), which is used to pierce the trabecular meshwork and Schlemm's tube wall tissue; and cut the trabecular meshwork and Schlemm's tube wall tissue in the direction outward from the eyeball, and store the cut sample in the first sample cavity (12).

2. The human ocular tissue sampling device of claim 1, wherein, It also includes a tube protector unit (3), which is disposed on the traction unit (2); the tube protector unit (3) is used to control the cutting length of the first annular cutter (11) on the beam mesh and Schlemm tube wall.

3. The human ocular tissue sampling device of claim 2, wherein, The protective tube unit (3) includes a tube body (31), which is sleeved on the traction unit (2) and can slide along the traction unit (2).

4. The human ocular tissue sampling device of claim 3, wherein, One end of the tube (31) is the cutting end, and the other end of the tube (31) is the free end; the cutting end and the first annular cutting blade (11) form a cutting space. The length of the cutting space can be changed as the tube (31) slides along the traction unit (2), thereby setting the thickness of the small beam mesh structure and the Schlemm tube wall structure entering the cutting space, and thus controlling the cutting length of the small beam mesh structure and the Schlemm tube wall structure by the first annular cutting blade (11).

5. The human ocular tissue sampling device of claim 3, wherein, The tube protection unit (3) further includes a second annular cutting blade (32), which is disposed at the cutting end of the tube body (31); the first annular cutting blade (11) and the second annular cutting blade (32) can move towards each other and cut the eye tissue between the first annular cutting blade (11) and the second annular cutting blade (32).

6. The human ocular tissue sampling device of claim 5, wherein, The tube unit (3) further includes a second sample cavity (33), the hollow portion inside the second annular cutting blade (32) forms the second sample cavity (33), and the cut eye tissue can be stored in the first sample cavity (12) and the second sample cavity (33).

7. The human ocular tissue sampling device of claim 3, wherein, The tube protection unit (3) also includes a spacer nut (34), which is connected to the free end of the tube body (31).

8. The human ocular tissue sampling device of claim 7, wherein, The traction unit (2) includes a first traction section (21), which is connected to the first sample cavity (12).

9. The human ocular tissue sampling device of claim 8, wherein, The traction unit (2) further includes a second traction section (22), which is connected to the first traction section (21); the spacer nut (34) can be threadedly connected to the second traction section (22).

10. The human ocular tissue sampling device of claim 1, wherein, The guide portion (13) is a cone-shaped guide portion.

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