JP4311996B2 - Endoscopic treatment tool - Google Patents

Description

  The present invention relates to an endoscopic treatment tool that is made disposable after a single use.

Endoscopic treatment tools used by being inserted into the endoscope treatment tool insertion channel can cut, tear, rub or pierce the internal mucosa. In order to completely prevent infection between patients, it is most effective to make the treatment tool disposable, and the structure is simplified so that the economic burden on the user does not become too large if it is made disposable. Various proposals have been made (for example, Patent Document 1).
Japanese National Patent Publication No. 3-500500

  However, even if the structure is simplified and the cost is reduced, it is left to the user's ethics whether the endoscope treatment tool once used must be discarded or disinfected and reused. It is difficult to completely eliminate the repeated use of the endoscope treatment tool.

  Therefore, an object of the present invention is to provide an endoscopic treatment tool that is completely unusable after being used once and can completely prevent the risk of infection between patients due to reuse.

  In order to achieve the above object, an endoscope treatment tool according to the present invention includes a first member and a first member which are provided so as to be relatively movable with respect to a proximal-side operation unit in order to remotely drive a distal end working unit. The main component and the curing agent of the two-part adhesive that cures over time by mixing without being cured alone are disposed adjacently and separately in a portion between the two members, An opening member that breaks the sealing of the main agent and the curing agent is provided by relatively moving the first member and the second member.

  The main agent and the curing agent may be attached to one side of the first and second members, and the opening member may be attached to the other side. The main agent and the curing agent are each independently a sealing member. It is enclosed in the inside and the opening member may have a sharp part for tearing off both sealing members.

  In addition, a relative movement between the first member and the second member is restricted before using the endoscope treatment tool, and a movement restriction member that is removed when using the endoscope treatment tool is at hand. If it is attached to the side operation unit, it is possible to prevent a situation in which it becomes unusable before use.

  According to the endoscope treatment tool of the present invention, the first member and the second member are relatively moved by performing an operation of remotely driving the distal end working unit in the hand side operation unit during use. Then, the seal of each of the main component and the curing agent of the two-component adhesive is broken by the opening member, whereby the main agent and the curing agent are mixed and the two-component adhesive is cured as time passes. After the use of the endoscope treatment tool, the first member and the second member are bonded to each other so that the proximal side operation unit does not operate, and after the endoscope treatment tool is used once, it cannot be used at all. Thus, the risk of inter-patient infection due to reuse can be completely prevented.

  The main part of the two-component adhesive and the curing agent are placed adjacent to the movable finger rest that slides with respect to the operation unit main body of the hand side operation unit of the endoscope treatment tool, and a sharp opening member is attached to the operation unit main body. Deploy.

Embodiments of the present invention will be described with reference to the drawings.
FIG. 3 shows an endoscopic biopsy forceps that is one of typical endoscopic treatment tools, and a distal end working portion is provided at a distal end portion of a flexible sheath 1 made of a tightly wound coil pipe or the like. A pair of forceps cups 2 are arranged in a hook shape so as to be freely opened and closed, and the forceps cup 2 is opened and closed by advancing and retracting the operation wire 3 inserted and arranged in the flexible sheath 1 in the axial direction.

  The proximal side operation unit 10 connected to the proximal end of the flexible sheath 1 is provided with a fixed finger hook 12 at the proximal side end of the operation unit main body 11 (first member), and the proximal end of the operation wire 3 is connected to the proximal end. The connected pincushion-shaped movable finger hook 13 (second member) is engaged with the operation portion main body 11 so as to be slidable in the axial direction.

  In addition, a movable finger hook for the operation portion main body 11 is provided between the abutting portion 14 and the movable finger hook 13 projecting from the distal end portion of the operation portion main body 11 from the time of shipment from the factory until immediately before being used for endoscopic inspection. A movement restricting member 15 for holding the forceps cup 2 in a closed state by restricting the 13 slide movements is sandwiched in a tightly fitted state. In FIG. 3, only the movement restricting member 15 is shown in cross section.

  As shown in FIG. 4, the movement restricting member 15 is a soft plastic member having a C-shaped cross section, for example, and can be removed from the hand-side operation unit 10 by pushing it sideways with a little force.

  Therefore, immediately before the endoscopic treatment tool is used for endoscopy, the movement restricting member 15 is removed from the hand side operation unit 10 and the movable finger hook 13 is moved away from the fixed finger hook 12 as indicated by an arrow A. By sliding in the direction, the operation wire 3 is pushed in and the pair of forceps cups 2 opens in a hook shape. Next, by pulling the movable finger hook 13 toward the fixed finger hook 12, the operation wire 3 is pulled, the forceps cup 2 is closed, and a biopsy tissue piece can be collected.

  FIG. 1 shows an engagement portion between the operation portion main body 11 and the movable finger hook 13 of the hand side operation portion 10. The movable finger hook 13 is formed with a hole 13 a through which the operation portion main body 11 passes loosely. The two annular capsules 17 and 18 (sealing members) in which the main agent and the curing agent of the two-pack adhesive are separately sealed in the circumferential groove 16 formed on the inner peripheral surface of the hole 13a are adjacent to each other. Loaded side by side. The annular capsules 17 and 18 of this embodiment are each formed in a hollow O-ring shape.

  Two-component adhesives are those that the main agent and the curing agent are not cured by themselves, but are cured over time by mixing the main agent and the curing agent, but are not cured in a few minutes, but the curing time Is used at room temperature for about 1 to 3 hours (within about 1 hour at about 80 ° C.).

  The two annular capsules 17 and 18 in which the main component and the curing agent of the two-component adhesive are separately sealed are formed of a thin and low-strength plastic material or the like, and the engagement of the operation unit main body 11 with respect to the movable fingerrest 13. An opening member 19 having a sharp cutting edge for tearing and opening the annular capsules 17 and 18 is provided on the mating surface so as to project sideways. Reference numeral 20 denotes a linear groove formed in the movable finger rack 13 so that the movable finger rack 13 does not interfere with the opening member 19 during sliding movement.

  The unsealing member 19 has two annular capsules 17, as shown in FIG. 1, in a state where the movable finger hook 13 is drawn toward the fixed finger hook 12 from the time of factory shipment until just before being used for endoscopy. It is located closer to the tip than 18.

  When the movable finger hook 13 is moved away from the fixed finger hook 12 in order to open the forceps cup 2 when used for endoscopy, as shown in FIG. The annular capsules 17 and 18 are cut by the opening member 19, and the main agent and the curing agent of the two-component adhesive therein flow out to the engaging portion between the operation unit main body 11 and the movable finger hook 13 and are mixed.

  As a result, since the curing of the two-component adhesive does not proceed while the treatment instrument for endoscope is used for the endoscopy, the movable finger hook 13 can smoothly slide to collect tissue. After the end of the endoscopy, the two-component adhesive cures and the movable finger hook 13 cannot slide with respect to the operation unit main body 11, and the endoscopic treatment tool cannot be used thereafter. become.

  In addition, this invention is not limited to the said Example, The attachment position of a two-pack type adhesive agent is relatively with respect to the hand side operation part 10 in order to drive the forceps cup 2 (tip action | operation part) remotely. Any portion may be used as long as it is a portion between two members that are movably provided. Further, the shape of the sealing member of the two-component adhesive may be any shape other than the annular shape.

  In addition, the present invention can be applied to various types of endoscope treatment tools other than biopsy forceps, and the endoscope treatment tool in which the movable finger hook 13 rotates around the axis with respect to the operation unit main body 11. It can also be adopted.

It is a fragmentary sectional view of the state before use of the hand side operation part of the treatment tool for endoscopes of the example of the present invention. It is a fragmentary sectional view of the state after use of the hand side operation part of the treatment tool for endoscopes of the example of the present invention. It is a side view which shows the whole structure of the state before use of the treatment tool for endoscopes of the Example of this invention. It is a side view which shows the whole structure of the state after use of the treatment tool for endoscopes of the Example of this invention.

Explanation of symbols

2 Forceps cup (tip working part)
3 Operation wire 10 Hand side operation unit 11 Operation unit body (first member)
12 Fixed finger rest 13 Movable finger rest (second member)
17, 18 annular capsule (sealing member)
19 Opening material

Claims (4)

By mixing the first member and the second member, which are provided so as to be relatively movable to the hand side operation unit, to drive the tip working unit remotely, without being cured alone. The main component and the curing agent of the two-component adhesive that cures over time are separately sealed and disposed, and the first member and the second member are moved relative to each other. An endoscopic treatment tool comprising an opening member that breaks the sealing of each of the main agent and the curing agent. The endoscope treatment tool according to claim 1, wherein the main agent and the curing agent are attached to one side of the first and second members, and the opening member is attached to the other side. The inside of Claim 1 or 2 in which the said main ingredient and the said hardening | curing agent are each enclosed in the sealing member independently, and the said opening member has a sharp part for tearing off the said both sealing members. Endoscopic treatment tool. A movement restricting member that restricts relative movement between the first member and the second member before using the endoscope treatment tool and is removed when the endoscope treatment tool is used. The endoscope treatment tool according to claim 1, 2, or 3 attached to the proximal-side operation unit.

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