Medical endoscope plunger

Abstract

The present invention relates to a sterilizable medical endoscope plunger consisting of a central rod (40) having an at least partially hollow central channel opening on one of its front faces, and a head defining a seat for connection to a fluid duct, the head (41) and the channel (40) being joined by elastic means, characterized in that the assembly consists of a single piece of one-piece construction made of a flexible elastic polymer.

Claims

[Claim 1] A plunger (20, 30) provided on the handle body of an endoscope for ensuring the function of closing or opening the lumen, A rod (40) having a central channel that opens to the proximal front surface (32) on one side and to the lateral channel (33) on the other side, A one-piece molded button (31) formed by two coaxial annular outer skirts and annular inner skirts (60, 61), wherein the annular outer skirt (60) includes an annular base (32) designed to engage with the handle body, and the annular outer skirt and the annular inner skirts (60, 61) are connected by at least one elastically deformable connector (63) to allow relative axial movement between the annular outer skirt and the annular inner skirt, Formed by, The annular inner skirt (61) of the integrally molded button (31) is a plunger that fits onto the proximal portion (41) of the rod (40). [Claim 2] The rod (40) is cylindrical and comprises an annular groove (50-53) and a joint (80-83) that is overmolded into the annular groove (50-53), wherein the plunger provided on the handle body of the endoscope according to claim 1 is for ensuring the function of closing or opening the lumen. [Claim 3] The joint portion (80-83) is lens-shaped and made of an overmolded material with lower hardness than the material of the rod (40), a plunger provided on the handle body of the endoscope according to claim 2 for ensuring the function of closing or opening the lumen. [Claim 4] The connection between the annular outer skirt and the annular inner skirt (60, 61) is secured by two diametrically opposed connecting portions (63), wherein the plunger provided on the handle body of the endoscope according to claim 1 is for securing the function of closing or opening the lumen. [Claim 5] A plunger provided on the handle body of the endoscope according to claim 1 for ensuring the function of closing or opening a lumen, wherein the elastically deformable connecting portion (63) is formed by a curved tab, the first lateral edge of the tab is rigidly connected to the annular outer skirt (60), and the second lateral edge of the tab is rigidly connected to the annular inner skirt (61). [Claim 6] A plunger for ensuring the function of closing or opening a lumen, provided on the handle body of the endoscope according to claim 5, wherein the annular outer skirt (60) has an opening wider than the width of the tab at a position on the side surface of the annular outer skirt (60) opposite to the tab (63) in order to allow the tab (63) to move laterally during the relative axial movement of the annular outer skirt and the annular inner skirts (60, 61). [Claim 7] A plunger provided on the handle body of the endoscope according to claim 6 for ensuring the function of closing or opening a lumen, wherein the annular inner skirt (61) further comprises a notch wider than the width of the tab at a position on the side surface of the annular inner skirt (61) facing the tab (63), and the tab (63) connects the annular outer skirt (60) to the annular inner skirt (61). [Claim 8] A plunger provided on the handle body of the endoscope according to claim 1, for ensuring the function of closing or opening a lumen, which is designed to cooperate with the suction valve body of the handle of the endoscope. [Claim 9] A plunger provided on the handle body of the endoscope according to claim 1, for ensuring the function of closing or opening a lumen, which is designed to cooperate with the air supply valve body of the handle of the endoscope. [Claim 10] A disposable assembly formed by a suction plunger and an air / water supply plunger for an endoscope, The suction plunger and the air / water supply plunger are each, A rod (40) having a central channel that opens to the proximal front surface (32) on one side and to the lateral channel (33) on the other side, A one-piece molded button (31) formed by two coaxial annular outer skirts and annular inner skirts (60, 61), wherein the annular outer skirt (60) includes an annular base (32) designed to engage with the handle body of an endoscope, and the annular outer skirt and the annular inner skirts (60, 61) are connected by at least one elastically deformable connector (63) to allow relative axial movement between the annular outer skirt and the annular inner skirt, Formed by, The annular inner skirt (61) of the integrally molded button (31) is a disposable assembly that fits onto the proximal portion (41) of the rod (40). [Claim 11] A method for manufacturing a plunger according to claim 1, The first step is to inject a first elastomer plastic material into a mold for molding the rod (40) having a central channel that opens on one side to the proximal front surface (32) and on the other side to a lateral channel (33) in the first molded cavity, and to inject a second elastomer plastic material into a mold for the overmolded joints (80-83), The steps include injecting an elastomer plastic material into a second molding cavity to form the annular outer skirt (60) and the annular inner skirt (61) of the integrally molded button (31), The step of fitting the integrally molded button (31) onto the proximal portion (41) of the rod (40), A method for manufacturing a plunger, comprising the features described above. [Claim 12] The method for manufacturing a plunger according to claim 11, wherein the molding of the rod (40) and the molding of the integrally molded button (31) are carried out in the same injection cycle, and the integrally molded button (31) is fitted onto the proximal portion (41) of the rod (40) before the molded part cools.

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