JP2013056096A - Catheter with fiber scope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a catheter with fiber scope capable of easily carrying out such as sputum suction processing as well as being easily manufactured and having high productivity.SOLUTION: The catheter with fiber scope 1 includes: a catheter body 10 with a leading portion inserted into a patient's body; a leading end chip (leading end retaining section) 20 provided on the leading end section of the same; a fiber scope 30 attached inside the catheter body 10 and the leading end chip 20; and a connector 40 of a base section of the catheter body 10. An objective lens 31 is attached to the leading end section of the fiber scope 30. A second passage 12 of the catheter body 10 has a large diameter and a fiber scope 30 with a small diameter is inserted with some space in between.

Description

  The present invention relates to a catheter that can be inserted into a body cavity such as an oronasal cavity, trachea, or esophagus and that is equipped with a fiberscope.

  In the medical field, for a patient who cannot exhale himself, it is necessary to periodically insert an aspiration catheter into the airway and aspirate the hemorrhoid. In particular, a rapid treatment is required for a patient whose airway may be blocked with a sputum, and it is necessary to perform a suction treatment within approximately 15 seconds.

  Such sputum suction treatment is performed by inserting a suction catheter through the mouth and guiding it to the airway. However, since the position of the sputum in the airway cannot be specified from the patient's mouth, there is a problem in the reliability of the treatment. .

  In addition, urgency is required for treatment, but if treatment is performed quickly, there is a risk of damaging the mucous membrane of the trachea by the tip of the catheter. There was a problem that treatment could not be performed.

  In recent years, such sputum suction processing is required not only for medical workers but also for a wide range of nursing care sites. As described above, when performing a sputum suction process at a site such as nursing care, there are many cases where there is no expert, and there is a strong demand for a treatment that does not require learning.

JP 59-155231 A

  In order to solve the above problem, for example, it is conceivable to perform a treatment while assembling a fiberscope integrally with a catheter and confirming an image obtained by the fiberscope when the catheter is inserted into a body cavity.

  As a catheter equipped with such a fiberscope, the one described in Patent Document 1 can be cited. The catheter described in the document is inserted into a blood vessel and ejects a flush liquid such as physiological saline from the distal end of the catheter so that an image in the blood vessel can be obtained. It is also conceivable to use the ejection path for suctioning the sputum.

  However, the catheter described in the document has a plurality of fiberscopes inserted in the thin catheter passage, and it is very difficult to insert the plurality of fiberscopes in the thin catheter passage. There is an inconvenience that productivity is low and yield is poor.

  Accordingly, although there is a concept of using a fiberscope through a thin catheter as in Patent Document 1, there is no such product on the market at the present time.

  An object of the present invention is to provide a catheter with a fiberscope that can easily perform sputum suction processing and the like, and is easy to manufacture and highly productive.

  The catheter with a fiberscope of the present invention has a flexible catheter body in which a distal portion is inserted into the body, a rear portion is disposed outside the body, and a passage communicating from the front portion to the rear portion is provided, and a distal end portion An objective lens is mounted on the catheter body in parallel with the passage, and a distal end holding portion for holding the objective lens of the fiberscope is provided at the distal end portion of the catheter body. The fiberscope is mounted on the outer peripheral surface of the fiberscope with a space from the catheter body.

  The catheter with a fiberscope of the present invention has a configuration in which the outer peripheral surface of the fiberscope is attached to the catheter body with a space therebetween, so that unlike the conventional catheter with a fiberscope, the fiberscope is inserted into the catheter body. Easy to do. Accordingly, since the fiberscope is prevented from being damaged when the catheter with the fiberscope is manufactured, it is possible to provide the catheter with the fiberscope that is easy to manufacture and has a high yield.

  Moreover, since the catheter with a fiberscope of this invention hold | maintains the objective lens of the said fiberscope by the said front-end | tip holding | maintenance part, the imaging direction by an objective lens is always fixed to the axial direction of a catheter.

  In the catheter with a fiberscope of the present invention, a fiberscope passage is provided in the catheter body in parallel with the passage, and an inner diameter of the fiberscope passage is larger than an outer diameter of the fiberscope. Preferably there is. The fiberscope can be inserted into the passage, but it is preferable to form a fiberscope passage separately from the passage in order to secure the suction ability of the passage.

  In the catheter with a fiberscope of the present invention, the distal end holding portion is formed in a hemispherical shape on the distal end side, and the objective lens has a distal end surface and a rear end surface formed in a planar shape, and the distal end surface is It is preferable that the distal end holding portion is disposed so as to be shifted from the distal end portion toward the proximal end side. By making the front end surface and the rear end surface of the objective lens flat, the objective lens can be easily processed and attached to the fiberscope. Further, even if the distal end surface of the objective lens is flat, the contact of the distal end surface of the objective lens with the body cavity surface is reduced by disposing the distal end portion from the distal end portion of the distal end holding portion to the proximal end side. be able to.

Explanatory drawing which shows an example of embodiment of this invention. (A) is the IIa-IIa line end view of FIG. 1, (b) is the IIb-IIb sectional view taken on the line of FIG. An explanatory view showing a tip (tip holding part). Explanatory drawing which shows the inside of a connector.

  Next, a catheter with a fiberscope according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4.

  As shown in FIG. 1, a catheter 1 with a fiberscope of the present embodiment (hereinafter simply referred to as “catheter 1”) includes a catheter body 10 whose distal portion is inserted into a patient's body, and a distal end portion of the catheter body 10. A distal end tip (a distal end holding portion) 20 provided on the distal end of the catheter body 10, a fiberscope 30 mounted in the distal end tip 20, and a connector 40 attached to the proximal end portion of the catheter body 10. .

  An objective lens 31 is attached to the distal end portion of the fiber scope 30 and is exposed to the outside from the distal end portion of the distal tip 20. In FIG. 1, a tube 41 containing the fiberscope 30 is extended downward from the connector 40, and the tube 41 is connected to an imaging device 50 that captures an image with the fiberscope 30.

  The image obtained by the imaging device 50 is sent to the tablet terminal 51 wirelessly, and the tablet terminal 51 can view the image. A known suction device (not shown; the same applies hereinafter) is connected to the rear end (left end in FIG. 1) of the connector 40.

  As shown in FIG. 2A, the catheter body 10 has a first passage 11 connected to the suction device and a second passage 12 through which the fiberscope 30 is inserted. The 1st channel | path 11 is comprised so that many areas may be occupied among the areas shown to Fig.2 (a) so that the soot etc. which are attracted | sucked can be attracted | sucked rapidly.

  The second passage 12 is easily inserted when the fiberscope 30 is inserted into the second passage 12, and the friction generated between the second passage 12 and the inner surface of the catheter 1 is small when the catheter body 10 is bent during use. The cross-sectional shape shown in FIG. 2A is formed larger than the outer diameter of the fiber scope 30.

  In the present embodiment, the outer diameter of the catheter body 10 is set to a thickness in the range of 4.0 mm to 5.5 mm. This is a thicker setting than a normal suction catheter currently in circulation.

  A larger diameter catheter body 10 can quickly suck sputum or the like, but a conventional suction catheter cannot be inserted into a body cavity while looking inside the trachea. In order to reduce the risk of damage, the outer diameter is set thin. On the other hand, in the catheter 1 of this embodiment, since the catheter can be inserted into the body cavity while looking inside the trachea, damage to the trachea and the like can be prevented even if the diameter is somewhat thick.

  The catheter body 10 is made of a flexible synthetic resin such as PVC. The hardness is set to a certain degree of hardness, so that the treatment person can easily insert the catheter 1 into the trachea of the patient. In addition, by setting the hardness, the operation for inserting the fiberscope 30 through the catheter body 10 is facilitated even when the catheter 1 of the present embodiment is manufactured.

  As shown in FIGS. 2B and 3, the distal tip 20 has a first passage 21 that communicates with the first passage 11 of the catheter body 10 and a second passage that communicates with the second passage 12 of the catheter body 10. 22 is formed. In the distal tip 20, the distal end portion of the fiber scope 30 and the objective lens 31 are held by the second passage 22 and the positions thereof are fixed.

  As shown in FIGS. 1 and 3, the tip 20 has a hemispherical tip and is configured not to damage the mucous membrane of the trachea when inserted into the patient's trachea. Moreover, in this embodiment, the front-end | tip part of the 2nd channel | path 22 is opening, and it is comprised so that the objective lens 31 of the fiberscope 30 may be exposed outside from this opening part.

  Further, the distal end surface of the objective lens 31 of the fiber scope 30 is fixed while being shifted from the distal end portion of the distal end tip 20 to the proximal end side. With this configuration, when the distal tip 20 is inserted into the body cavity, the distal end surface of the objective lens 31 is less likely to come into contact with the body cavity surface, so that it is easy to secure a field of view and the burden on the body cavity surface is further reduced. The

  A tip opening 23 that opens in a substantially crescent shape is formed at the tip of the tip 20, and an oblong suction hole 24 that penetrates the front and back is formed on the side surface. In the catheter 1 of the present embodiment, the heel can be sucked by the distal end opening 23 and the suction hole 24.

  As shown in FIGS. 1 to 3, the fiberscope 30 is mounted from the imaging device 50 to the distal end portion of the distal tip 20 through the catheter body 10. A refractive index distribution type objective lens 31 having a front end surface and a rear end surface formed in a flat shape is attached to the front end portion.

  As shown in FIGS. 2A and 2B, the fiber scope 30 is formed in a single line having a circular outer periphery, but the inside is formed by a bundle of a plurality of fibers. It has become a thing.

  As the fiberscope 30, for example, “HD ImageGuide” manufactured by Sumita Optical Glass Co., Ltd., the applicant of the present application, is preferably used. Trademark) ”is preferably used.

  As shown in FIGS. 1 and 4, the connector 40 includes a first connection portion 42 connected to the catheter body 10, a second connection portion 43 to which the suction device is connected, and a third outlet serving as an outlet of the fiberscope 30. The connecting portion 44 and an adjustment opening 45 capable of adjusting the suction force at hand are provided. The adjustment opening 45 can be opened and closed by a cap 46.

  In addition, as shown in FIG. 4, the connector 40 is connected to the first connection portion 42 and the third connection portion 44 in an L shape and communicates with the second passage 12 of the catheter body 10. A passage 47 is formed. The fiberscope passage 47 has a corner formed in an arc shape, and has a shape that allows the fiberscope 30 to be easily inserted when the fiberscope 30 is inserted therein.

  In the catheter 1 configured as described above, the inner diameter of the second passage 12 of the catheter body 10 is larger than the outer diameter of the fiberscope 30, and the fiberscope 30 can be easily inserted into the catheter body 10 at the time of manufacture. Therefore, production efficiency is improved. In addition, since the inner diameter of the fiberscope passage 47 of the connector 40 is also made larger than that of the fiberscope 30, the operation of inserting the fiberscope 30 into the connector 40 becomes easy.

  Next, the use state of the catheter 1 of this embodiment is demonstrated. The catheter 1 of this embodiment is supplied as a disposable product to a medical facility or a nursing care site. Specifically, the configuration excluding the imaging device 50 and the tablet terminal 51 in FIG. 1 is individually packaged and delivered to each user.

  The imaging device 50 is a device that captures an image in front of the catheter 1 with the fiber scope 30. The imaging device 50 is formed so that a high-resolution image can be obtained by the fiberscope 30 in the present embodiment, and the obtained image can be transmitted to the tablet terminal 51 wirelessly.

  On the other hand, about the tablet terminal 51, what is currently distribute | circulating in the market can be used. The tablet terminal is a terminal that is generally a plate-like terminal and capable of screen display and communication with the outside, and is also called a tablet PC. As for the suction device, an electric suction pump, a manual suction pump, or the like currently on the market can be used.

  Thus, if there is a device for displaying an image such as the catheter 1, the imaging device 50, the suction device, and the tablet terminal 51 of the present embodiment, a suction treatment such as a sputum is required without requiring advanced equipment such as an endoscope. Is possible.

  Here, when there is a patient who must suck the sputum, the treatment person prepares the catheter 1, the imaging device 50, the tablet terminal 51, and the suction device of this embodiment, and the image is captured by the objective lens 31 of the fiber scope 30. Get ready to get.

  And the front-end | tip part of the catheter 1 is penetrated in a patient's body cavity from a patient's mouth. At this time, an image in front of the catheter 1 is displayed on the tablet terminal 51 via the imaging device 50. Since the treatment person can perform treatment while confirming the image displayed on the tablet terminal 51, the distal end of the catheter 1 can be brought close to the heel without damaging the mucous membrane of the patient's trachea, Acupuncture can be reliably treated.

  As described above, if the catheter 1 of the present embodiment is used, it is possible to easily perform a sputum suction treatment or the like that has been conventionally difficult with simple equipment. For this reason, the treatment can be widely performed not only at a well-equipped medical facility but also at a nursing care site.

  In addition, the catheter 1 of the present embodiment has a simple configuration in which the fiber scope 30 is provided on the suction catheter 1, is easy to manufacture, and manufacturing costs can be kept low. can do.

  As a result, the treatment cycle can be accelerated as compared with the case where a conventional endoscope apparatus is used, and the economic burden on the user can be greatly reduced.

  In the above embodiment, an example in which the catheter 1 is used for acupuncture suction has been described. However, the use of the catheter 1 is not limited to this, and the catheter 1 can be applied to various procedures for blindly inserting a tube into a human body. It is possible to reduce the risk of accidents such as mucosal damage. Specifically, it may be used as a supplementary device for draining body fluid in endoscopic surgery, and can be widely used for procedures such as drainage, urine transfer, and PEG exchange.

  Moreover, in the said embodiment, although the front-end | tip part of the 2nd channel | path 22 of the front-end | tip tip 20 is opened, not only this but the front-end | tip tip 20 is formed with a highly transparent raw material, and the objective lens 31 of the fiberscope 30 is used. You may make it cover the surface.

  The fiberscope 30 is inserted into the second passage 12 of the catheter body 10 and the second passage 22 of the distal tip 20. However, the present invention is not limited to this, and the second passages 12 and 22 are connected to the catheter. It may be formed as a groove opening on the outer peripheral surface of the main body 10 and the tip 20 (not shown), and the fiberscope 30 may be mounted in this groove. In this case, the fiberscope passage 47 of the connector 40 is also a groove (not shown) provided on the surface of the connector 40, so that the fiberscope 30 can be easily attached to the catheter 1.

  Moreover, in the said embodiment, although the tablet terminal 51 is used as a means to display the image obtained with the fiberscope 30, it is not restricted to this, You may display an image on a personal computer, An image is only on a display apparatus. May be displayed. Further, the communication means between the imaging device and the image display device may be performed by wire such as a USB cable or a LAN cable in addition to the case of using wireless as in the above embodiment.

  DESCRIPTION OF SYMBOLS 1 ... Catheter with a fiberscope, 10 ... Catheter main body, 11 ... 1st channel | path, 12 ... 2nd channel | path, 20 ... Tip tip (tip holding | maintenance part), 21 ... 1st channel | path, 22 ... 2nd channel | path, 30 ... Fiberscope 31 ... Objective lens, 40 ... Connector, 50 ... Imaging device, 51 ... Tablet terminal.

Claims (3)

A flexible catheter body in which a distal portion is inserted into the body, a rear portion is disposed outside the body, and a passage that communicates from the front portion to the rear portion is provided;
An objective lens is attached to the distal end, and includes a fiberscope attached to the catheter body in parallel with the passage,
A distal end holding part for holding the objective lens of the fiberscope is provided at the distal end part of the catheter body,
The fiberscope is equipped with a fiberscope, wherein an outer peripheral surface of the fiberscope is attached to the catheter body with a space therebetween. A catheter with a fiberscope according to claim 1,
A fiberscope passage is provided in parallel with the passage in the catheter body,
A catheter with a fiberscope, wherein an inner diameter of the fiberscope passage is larger than an outer diameter of the fiberscope. A catheter with a fiberscope according to claim 1 or 2,
The tip holding part is formed in a hemispherical shape on the tip side,
The objective lens has a distal end surface and a rear end surface formed in a flat shape, and the distal end surface is disposed so as to be shifted from the distal end portion to the proximal end side of the distal end holding portion. .

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