Duodenoscope Protected With Disposable Consumables

Abstract

A duodenoscope protected with disposable consumables is provided. An insertion portion of a duodenoscope body (1) is covered with a cuff (3). A disposable forceps passage tube (4) is inserted into a tube of the duodenoscope body (1). A distal end of the duodenoscope body (1) is covered with an end cap (2) which is integrally connected to the cuff (3) and the disposable forceps passage tube (4). An elongated opening (2.1), which is of the same shape as the opening of a head end (1.1) of the duodenoscope body (1), is formed in a side face of the end cap (2). A forceps-lifting unit (1.2) is disposed in the head end (1.1) of the duodenoscope body (1). The end cap (2) is made of a transparent elastic material. A soft connection port (5) is disposed in the elongated opening (2.1) of the end cap (2). The soft connection port (5) is shaped like a smoking pipe and made of an elastic film. A large-orifice end of the soft connection port (5) is glued to the elongated opening (2.1) of the end cap (2), while a small-orifice end (5.2) thereof sleeves and is glued to a distal end of the disposable forceps passage tube (4). A pulley (1.4) is disposed on the head of the forceps-lifting unit (1.2), and a groove (1.5) is formed in the periphery of the pulley (1.4). The duodenoscope protected with disposable consumables can protect both the external surface of the duodenoscope and the internal surface of the tube.

Claims

1. A duodenoscope protected with disposable consumables, comprising a duodenoscope body having an insertion portion covered with a cuff, with a disposable forceps passage tube being inserted into a tube of the duodenoscope body, a distal end of the duodenoscope body being covered with an end cap which is integrally connected to the cuff and the disposable forceps passage tube, an elongated opening, which is of the same shape as an opening of a head end of the duodenoscope body, being formed in a side face of the end cap, and a forceps-lifting unit being disposed in the head end of the duodenoscope body, wherein the end cap (2) is made of a transparent elastic material; a soft connection port (5) is disposed in the elongated opening (2.1) of the end cap (2); the soft connection port (5) is shaped like a smoking pipe and made of an elastic film; an outer edge of a large-orifice end (5.1) of the soft connection port (5) is glued to an edge of the elongated opening (2.1) of the end cap (2), and a small-orifice end (5.2) of the soft connection port (5) sleeves and is glued to a distal end of the disposable forceps passage tube (4); a pulley (1.4) is disposed on the head of the forceps-lifting unit (1.2), and a groove is formed in the periphery of the pulley (1.4).

2. The duodenoscope protected with disposable consumables according to claim 1, wherein a distal end of a steel wire (1.3) for pulling the forceps-lifting unit (1.2) is coupled with a shaft of the pulley (1.4).

3. The duodenoscope protected with disposable consumables according to claim 1, wherein a proximal end of the disposable forceps passage tube (4) is sealed conically or spherically.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0014] FIG. 1 is structural view of a head end of a duodenoscope;

[0015] FIG. 2 is a structural view of an end cap;

[0016] FIG. 3 is a view of connection of a soft connection port and a disposable forceps passage tube;

[0017] FIG. 4 is structural view of fitting of the head end of the duodenoscope and the end cap (forceps-lifting unit being in a relaxed state);

[0018] FIG. 5 is a structural view of fitting of the head end of the duodenoscope and the end cap (forceps-lifting unit being in a lifted state); and

[0019] FIG. 6 is a half-sectional view of a conically or spherically sealed proximal end of the disposable forceps passage tube.

[0020] Reference numerals in the figures are described below: 1, duodenoscope body; 1.1, head end; 1.2, forceps-lifting unit; 1.3, steel wire; 1.4, pulley; 1.5, groove; 2, end cap; 2.1, elongated opening; 3, cuff; 4, disposable forceps passage tube; 4.1, proximal end of disposable forceps passage tube; 5, soft connection port; 5.1, large-orifice end; 5.2, small-orifice end; and 6, biopsy forceps.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The duodenoscope protected with disposable consumables is composed of two parts: one part is an improved duodenoscope, and the other part is disposable consumables for protecting the reusable duodenoscope.

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] As shown in FIG. 1, a forceps-lifting unit 1.2 is disposed in the head end 1.1 of the duodenoscope body 1; a pulley 1.4 is also disposed on the head of the forceps-lifting unit 1.2; a groove 1.5 is formed in the periphery of the pulley 1.4; and the distal end of a steel wire 1.3 for pulling the forceps-lifting unit 1.2 is coupled with a shaft of the pulley 1.4. The pulley 1.4 may reduce the kinetic frictional force to the forceps-lifting unit 1.2.

[0024] As shown in FIG. 2, the disposable consumables include: an end cap 2, a cuff 3 and a disposable forceps passage tube 4, wherein the end cap 2 sleeves the head end 1.1 of the duodenoscope body 1, and is integrally connected with the cuff 3 covering the insertion portion of the duodenoscope body 1 and the disposable forceps passage tube 4 in the tube of the duodenoscope body, thus protecting both the external surface of the duodenoscope body 1 and the internal surface of the tube of the duodenoscope.

[0025] As shown in FIG. 2 to FIG. 5, the end cap 2 is integrally made of a transparent elastic material. An elongated opening 2.1, which is of the same shape as the opening of the head end 1.1 of the duodenoscope body 1, is formed in a side face of the end cap 2. A soft connection port 5 is disposed in the elongated opening 2.1. The soft connection port 5 is made of an elastic film and shaped like a smoking pipe. As shown in FIG. 3, two ends of the soft connection port 5 are a large-orifice end 5.1 and a small-orifice end 5.2, wherein the outer edge of the large-orifice end 5.1 of the soft connection port 5 is glued to the inner side of the elongated opening 2.1 of the end cap 2, and the small-orifice end 5.2 of the soft connection port 5 sleeves the distal end of the disposable forceps passage tube 4 and is glued to the outer wall thereof.

[0026] As shown in FIG. 4, when the forceps-lifting unit 1.2 and the steelwire 1.3 are in a relaxed state, the forceps-lifting unit 1.2 does not interact with the disposable forceps passage tube 4, and biopsy forceps 6 extend slantwise out of the elongated opening 2.1 via the disposable forceps passage tube 4. As shown in FIG. 5, when the steel wire 1.3 is tensioned to lift up the forceps-lifting unit 1.2, the soft connection port 5 is correspondingly deformed, and the forceps-lifting unit 1.2 pushes the disposable forceps passage tube 4 to rise via the soft connection port 5. Thus, the orientation of the biopsy forceps 6 is adjusted indirectly to achieve a clamping operation to a specified position.

[0027] The distal end of the disposable forceps passage tube 4 is bent at a certain angle. As shown in FIG. 3, the distal end of the disposable forceps passage tube 4 extends inwardly via the elongated opening 2.1 of the end cap 2 and then is inserted into the small-orifice end 5.2 of the soft connection port 5, with the bent portion thereof completely entering the soft connection port 5 and the tube orifice facing the large-orifice end 5.2 of the soft connection port 5. As shown in FIG. 6, the proximal end 4.1 of the disposable forceps passage tube 4 is sealed conically or spherically before use. The proximal end of the disposable forceps passage tube 4 is sealed conically or spherically, so that it can be inserted into the tube of the duodenoscope body smoothly and pollutants may be prevented from entering the tube before use.

[0028] Operating principle of the present invention is as follows:

[0029] As shown in FIG. 4 and FIG. 5, when the forceps-lifting unit 1.2 and the steel wire 1.3 are in the relaxed state, the forceps-lifting unit 1.2 does not interact with the disposable forceps passage tube 4, and the biopsy forceps 6 extend slantwise out of the elongated opening 2.1 in the side face of the end cap 2 via the disposable forceps passage tube 4. When the steel wire 1.3 is tensioned to lift up the forceps-lifting unit 1.2, the soft connection port 5 is correspondingly deformed, and the forceps-lifting unit 1.2 pushes the disposable forceps passage tube 4 to rise via the soft connection port 5. Thus, the orientation of the biopsy forceps 6 is adjusted indirectly to achieve the clamping operation to a specified position.