JP3791802B2 - Endoscope device balloon mounting method and mounting jig - Google Patents

Description

  The present invention relates to a balloon mounting method and mounting jig for an endoscope apparatus, and more particularly to a mounting method and mounting jig for mounting a balloon formed in a substantially cylindrical shape on an insertion portion of an endoscope.

  There is an endoscope in which an inflatable / deflatable balloon is attached to an insertion portion. In this endoscope, the insertion portion can be stopped at a desired position by inserting the insertion portion into a lumen in the body cavity and inflating the balloon. Thereby, an observation visual field can be ensured and treatment with treatment tools can be performed reliably.

The balloon attached to the insertion portion is formed in a substantially cylindrical shape. The balloon is fixed to the insertion portion by inserting the insertion portion through the balloon and winding a thread around both ends of the balloon. Patent Document 1 describes a method in which an inner diameter of a balloon is expanded by adsorbing the balloon to an inner peripheral surface of a cylindrical body, and an insertion portion is inserted. According to Patent Document 1, the insertion portion can be easily inserted through the balloon.
Japanese Patent Laid-Open No. 5-15487

  However, Patent Document 1 has a problem that when setting the balloon on the cylinder, it is necessary to cover the end of the large-diameter cylinder while expanding the end of the small-diameter balloon. there were.

  Moreover, in patent document 1, when inserting an insertion part through the balloon which expanded diameter, there existed a possibility that an insertion part might contact a balloon and a balloon might be torn.

  The present invention has been made in view of such circumstances, and provides a balloon mounting method and a mounting jig for an endoscope apparatus in which the balloon can be easily mounted on the insertion portion without damaging the balloon. With the goal.

  In order to achieve the above object, the invention according to claim 1 has an inner diameter larger than the outer diameter of the insertion portion in the method for mounting a balloon for an endoscope apparatus in which a balloon is mounted on the insertion portion of the endoscope. In addition, the balloon is inserted into a cylindrical body provided with a hooking portion for the balloon, gas is supplied from one end of the balloon, the balloon is inflated in the cylindrical body, and the insertion portion is extended from the other end of the balloon. It is characterized by relatively pushing.

  According to the first aspect of the present invention, by supplying gas from one end of the balloon while the balloon is inserted through the cylindrical body, the balloon is inflated and attached to the inner peripheral surface of the cylindrical body, and the diameter thereof is increased. Held in a state. Therefore, by inserting the insertion portion from the other end of the balloon in this state, the insertion portion can be easily inserted into the balloon. At that time, since the balloon is caught by the catch portion of the cylindrical body, it does not shift with respect to the cylindrical body.

  Further, according to the first aspect of the present invention, the gas supplied from one end of the balloon flows through the gap between the inner peripheral surface of the balloon and the outer peripheral surface of the insertion portion. Prevent contact with the insert.

  In order to achieve the above object, the invention according to claim 2 has an inner diameter larger than the outer diameter of the insertion portion in the attachment jig for the balloon for an endoscope apparatus in which the balloon is attached to the insertion portion of the endoscope. And a cylinder body provided with a hooking portion for the balloon, and a gas supply means for supplying gas from one end of the balloon, the balloon being inserted through the cylinder body, and the gas supply means for one end of the balloon. The balloon is inflated in the cylindrical body, and the balloon is attached to the insertion portion by relatively pushing the insertion portion from the other end of the balloon.

  According to the second aspect of the present invention, the balloon can be inflated by supplying gas to the balloon by the gas supply means. And a balloon can be hold | maintained in the state expanded, by inflating a balloon inside the cylinder which has an internal diameter larger than the outer diameter of an insertion part. Moreover, since the catch part is provided in the cylinder, it is prevented that a balloon shifts | deviates with respect to a cylinder. Therefore, the balloon can be easily attached to the insertion portion by pushing the insertion portion from the other end of the balloon.

  According to a third aspect of the present invention, in the second aspect of the present invention, the hooking portion is a hole formed in the cylindrical body, and the balloon enters the cylindrical body and expands when the balloon enters and expands. It is characterized by being fixed to.

  According to the balloon mounting method and mounting jig for an endoscope apparatus according to the present invention, a gas is supplied from one end of the balloon, the balloon is inflated and stuck to the inner peripheral surface of the cylindrical body, The balloon can be attached to the insertion portion without damaging the balloon.

  Hereinafter, preferred embodiments of a balloon mounting method and a mounting jig according to the present invention will be described with reference to the accompanying drawings. First, an endoscope apparatus to which an endoscope apparatus balloon is attached will be described.

  FIG. 1 is a system configuration diagram illustrating an embodiment of an endoscope apparatus. As shown in FIG. 1, the endoscope apparatus mainly includes an endoscope 10, a light source device 20, a processor 30, and a balloon control device 66.

  The endoscope 10 includes an insertion portion 12 that is inserted into a body cavity and a hand operation portion 14 that is connected to the insertion portion 12, and a universal cable 16 is connected to the hand operation portion 14. An LG connector 18 is provided at the tip of the universal cable 16, and the LG connector 18 is connected to the light source device 20. In addition, an electrical connector 24 is connected to the LG connector 18 via a cable 22, and the electrical connector 24 is coupled to the processor 30. The LG connector 18 is connected to an air / water supply tube 26 that supplies air and water, and a suction tube 28 that sucks air.

  The hand operation unit 14 is provided with an air / water supply button 32, a suction button 34, and a shutter button 36, and a pair of angle knobs 38 and 38 and a forceps insertion unit 40. Furthermore, a supply / suction port 44 for supplying a fluid to a balloon 42 (to be described later) or sucking a fluid from the balloon 42 is provided at the proximal end portion of the hand operation unit 14. Hereinafter, although an example using air as a fluid will be described, other fluids such as an inert gas or water may be used.

  The insertion portion 12 includes a distal end portion 46, a bending portion 48, and a flexible portion 50. The bending portion 48 is remotely operated by rotating a pair of angle knobs 38, 38 provided on the hand operating portion 14. Curved operation. Thereby, the front end surface 47 of the front end portion 46 can be directed in a desired direction.

  As shown in FIG. 2, an observation optical system 52, illumination optical systems 54 and 54, an air / water supply nozzle 56, a forceps port 58, and the like are provided on the distal end surface 47 of the distal end portion 46. A CCD (not shown) is disposed behind the observation optical system 52, and a signal cable is connected to a substrate that supports the CCD. The signal cable is inserted into the insertion section 12, the hand operating section 14, and the universal cable 16 of FIG. 1, extends to the electrical connector 24, and is connected to the processor 30. Therefore, the observation image captured by the observation optical system 52 is formed on the light receiving surface of the CCD and converted into an electric signal, and this electric signal is output to the processor 30 via the signal cable and converted into a video signal. Is done. As a result, the observation image is displayed on the monitor 60 connected to the processor 30.

  An exit end of a light guide (not shown) is disposed behind the illumination optical systems 54 and 54 in FIG. The light guide is inserted through the insertion portion 12, the hand operating portion 14, and the universal cable 16 of FIG. 1, and the incident end is disposed on the LG connector 18. Thereby, the illumination light emitted from the light source device 20 is transmitted to the illumination optical systems 54 and 54 via the light guide, and is emitted from the illumination optical systems 54 and 54.

  The air / water supply nozzle 56 (see FIG. 2) communicates with a valve (not shown) operated by the air / water supply button 32 and further communicates with the air / water supply tube 26. Accordingly, by operating the air / water supply button 32, air or water is jetted from the air / water supply nozzle 56 toward the observation optical system 52.

  The forceps port 58 (see FIG. 2) communicates with the forceps insertion portion 40, communicates with a valve (not shown) operated by the suction button 34, and further communicates with the suction tube 28. Therefore, by operating the suction button 34, a lesioned part or the like is sucked from the forceps opening 58, and the treatment tool is led out from the forceps opening 58 by inserting the treatment tool from the forceps insertion part 40.

  As shown in FIG. 2, a balloon 42 made of an elastic material such as rubber is attached to the outer peripheral surface of the insertion portion 12. The balloon 42 is formed in a substantially cylindrical shape with both ends narrowed. After inserting the insertion portion 12 and placing it at a desired position, the end portions 42A and 42A on both sides of the balloon 42 are fixed to the insertion portion 12. It is attached by doing. The fixing method of the end portion 42A of the balloon 42 is performed, for example, by winding a thread around the end portion 42A of the balloon 42 and bringing the balloon 42 into close contact with the outer peripheral surface of the insertion portion 12 over the entire periphery. Instead of winding the thread, the fixing ring may be fitted to the end 42A of the balloon 42.

  A vent hole 62 is formed in the insertion portion 12 within a range where the balloon 42 can be attached. The vent hole 62 communicates with the supply / suction port 44 of the hand operation unit 14 of FIG. A tube 64 is connected to the supply / suction port 44, and this tube 64 is connected to a balloon control device 66. The balloon control device 66 is a device that supplies air to the balloon 42 through the tube 64 and sucks air, and controls the air pressure at that time, and is operated by an operation button 68 provided on the front surface. Is done. The balloon 42 expands into a substantially spherical shape by supplying air, and sticks to the outer surface of the insertion portion 12 by sucking air.

  Next, a method of mounting the above-described balloon 42 on the insertion portion 12 will be described with reference to FIGS. 3 (A) to 3 (D). In the figure, reference numeral 100 denotes a balloon material. The balloon material 100 is formed in a substantially cylindrical shape, and has a connecting portion 100A at one end, and the balloon 42 is formed by excising the connecting port 100A in the process described later. That is, the balloon material 100 is obtained by adding a connecting portion 100A to one end portion 42A of the balloon 42. The connecting portion 100A has a thick end, and can be connected by fitting a nozzle 104 described later.

  As shown in FIG. 3A, first, the balloon member 100 is inserted through the cylindrical body 102. The cylindrical body 102 is formed such that its inner diameter D2 is larger than the outer diameter D1 of the insertion portion 12. A hole 102B (corresponding to a hook portion) is formed in the center of the cylinder 102, and the balloon material 100 when inflated enters the hole 102B and engages the cylinder 102. In addition, the hole 102B may be one or plural. When forming the plurality of holes 102, it is preferable to form them at equal intervals in the circumferential direction.

  The cylindrical body 102 has a reduced diameter portion 102A formed by reducing the diameter of the distal end side (right side in the drawing). When the balloon member 100 is inserted through the cylindrical body 102, the connecting portion 100A of the balloon member 100 is arranged on the reduced diameter portion 102A side.

  After the balloon material 100 is inserted through the cylindrical body 102, the base end 100 </ b> B of the balloon material 100 is put on the distal end of the insertion portion 12. Since the base end 100B of the balloon material 100 is only slightly smaller in diameter than the distal end of the insertion portion 12, it can be easily covered only by expanding it a little.

  Next, as shown in FIG. 3B, the nozzle 104 is fitted into the connecting portion 100 </ b> A of the balloon material 100. The nozzle 104 is connected to a gas supply means, such as an air pump or a syringe, so that the gas can be injected from the nozzle 104. In this embodiment, an example in which air is supplied as a gas will be described. However, other gases such as an inert gas may be supplied. Moreover, you may connect gas supply means, such as a syringe, directly to the connection part 100A.

  When air is ejected from the nozzle 104, the balloon member 100 expands and sticks to the inner peripheral surface of the cylindrical body 102. That is, the balloon material 100 is held in a state where the diameter is larger than the outer diameter D1 of the insertion portion 12. Further, the balloon material 100 is inflated so that a part thereof enters the hole 102B. Thereby, it can prevent that the balloon material 100 shift | deviates with respect to the cylinder 102, and especially slip | deviates to the circumferential direction.

  Next, the insertion portion 12 is pushed into the balloon member 100 in a state where the balloon member 100 is expanded by jetting air from the nozzle 104. At this time, since the balloon material 100 has a diameter larger than the outer diameter D1 of the insertion portion 12, the insertion portion 12 can be easily inserted. Further, since the air jetted from the nozzle 104 flows out through the gap between the insertion portion 12 and the balloon material 100, the flow of air acts as a cushion, and the insertion portion 12 and the balloon material 100 come into contact with each other. To prevent. That is, when the distance between the insertion portion 12 and the balloon material 100 is narrowed, the air flow is a reaction force and a force is applied in the direction of separation, so that the insertion portion 12 and the balloon material 100 can be inserted without contacting each other. Therefore, the insertion portion 12 can be pushed into the balloon material 100 without damaging the balloon material 100. Further, the cylindrical body 102 is formed with a hole 102B and a reduced diameter portion 102A so that the balloon member 100 is not displaced in the axial direction or the circumferential direction with respect to the cylindrical body 102. Can be reliably pushed into the balloon member 100. In addition, although the example which pushes the insertion part 12 demonstrated in the present Example, you may move so that the cylinder 102 side may be covered on the insertion part 12. FIG.

  After inserting the insertion portion 12 to a predetermined position of the balloon material 100, the supply of air from the nozzle 104 is stopped and the nozzle 104 is pulled out from the connection portion 104 of the balloon material 100. Thereby, as shown in FIG.3 (C), the balloon material 100 sticks to the surface of the insertion part 12 in the deflated state. Therefore, only the cylinder 102 can be easily pulled out from the insertion portion 12.

  Next, the connecting portion 100A of the balloon material 100 is excised. Thereby, the balloon 42 is formed as shown in FIG. Next, the end portion 42 </ b> A of the balloon 42 is fixed to the insertion portion 12 by winding the thread 106 around the end portion 42 </ b> A of the balloon 42. Thereby, the balloon 42 is fixed to the insertion part 12. The balloon 42 may be fixed by winding the thread 106 before the connection port 100A is cut off.

  As described above, according to the present embodiment, the insertion portion 12 is pushed in from the base end 100B of the balloon material 100 while supplying air from the connecting portion 100A at the distal end of the balloon material 100. The insertion portion 12 can be pushed into the balloon material 100 without being damaged. Therefore, the mounting operation of the balloon 42 can be easily performed without damaging the balloon 42.

  In addition, according to the present embodiment, the hole 102B and the reduced diameter portion 102A are provided in the cylindrical body 102 so that the balloon material 100 is hooked on the cylindrical body 102. Therefore, the balloon material 100 is displaced with respect to the cylindrical body 102. Can be prevented. Therefore, the insertion portion 12 can be easily inserted into the balloon material 100.

  Furthermore, according to the present embodiment, since the thick connecting portion 100A is formed at the distal end portion of the balloon material 100, the nozzle 104 can be easily connected to the balloon material 100. Therefore, the mounting operation of the balloon 42 can be easily performed.

  In the above-described embodiment, the connecting portion 100A is formed with a thickness around the opening. However, the shape of the connecting portion 100A is not limited to this, and is matched to the shape of the gas supply means such as the nozzle 104. The connecting portion 100A may be formed. For example, as shown in FIG. 4, when gas is supplied using the needle 110, a plug-like connecting part 100C without an opening is provided, and the needle 110 is inserted into the connecting part 100C to supply the gas.

  Further, in the above-described embodiment, the hole 102B and the reduced diameter portion 102A are provided as the hook portion of the cylindrical body 102 with respect to the balloon material 100. However, the hook portion is not limited to this, and for example, as shown in FIG. Alternatively, a recess 102C may be formed on the inner peripheral surface of the cylinder 102, and the balloon material 100 may be hooked on the recess 102C.

System configuration diagram showing an endoscope apparatus The perspective view which shows the front-end | tip part of the insertion part of FIG. Explanatory drawing which shows the mounting method of the balloon for endoscope apparatuses which concerns on this invention Sectional drawing which shows the shape of a connection part different from FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Endoscope, 12 ... Insertion part, 14 ... Hand operation part, 42 ... Balloon, 46 ... Tip part, 48 ... Curve part, 60 ... Monitor, 66 ... Balloon control apparatus, 100 ... Balloon material, 100A ... Connection part 102 ... Cylinder, 102A ... Reduced diameter part, 102B ... Hole, 104 ... Nozzle, 106 ... Thread

Claims (3)

In a method for mounting a balloon for an endoscope apparatus in which a balloon is mounted on an insertion portion of an endoscope,
Inserting the balloon through a cylindrical body having an inner diameter larger than the outer diameter of the insertion portion and having a hooking portion for the balloon,
A method for mounting a balloon for an endoscopic device, comprising supplying gas from one end of the balloon, inflating the balloon in the cylinder, and relatively pushing the insertion portion from the other end of the balloon. In the attachment jig of the balloon for the endoscope apparatus for attaching the balloon to the insertion portion of the endoscope,
A cylindrical body having an inner diameter larger than the outer diameter of the insertion portion, and a hook portion for the balloon;
Gas supply means for supplying gas from one end of the balloon;
The balloon is inserted into the cylinder, gas is supplied from one end of the balloon by the gas supply means, the balloon is inflated in the cylinder, and the insertion portion is relatively moved from the other end of the balloon. A balloon mounting jig for an endoscope apparatus, wherein the balloon is mounted on the insertion portion by pushing in the balloon.   The said hook part is a hole formed in the said cylinder, The said balloon is fixed to the said cylinder, when the said balloon enters into this hole and expand | swells, The said balloon is fixed. Endoscope balloon mounting jig.

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