200944174 九、發明說明 【發明所屬之技術領域】 本發明是關於可裝卸地安裝在內視鏡前端部的內視鏡 用配接器。 【先前技術】 近年來，消化器官等的手術或檢查等是使用內視鏡。 如第3(a)圖所示，內視鏡E是於前端部Ea外圍面透過 硬質樹脂製內視鏡用配接器11裝接有可裝卸地的軟質樹脂 製軟套12，防止設置在前端面Eb的對物透鏡等直到接觸 被處置部。 然而，從被處置部流出的體液（血液、淋巴液、組織 液）、沖洗該體液用供應在被處置部的水、藥液等液體有 時會附著在內視鏡E前端面Eb的對物透鏡，導致內視鏡 E的眼界變差妨礙處置。於是，如第3(b)圖所示，就揭 示有具備朝厚度方向貫通外壁面的排液孔13或前端部12a 具備缺口部1 4，可讓該液體從該排液孔1 3或該缺口部1 4排 出外部的軟套1 2 (例如參照專利文獻1 )。 但是’內視鏡E即使安裝有具備上述排液孔i 3或缺口 部1 4的軟套1 2 ’但體液還是會殘留在排液孔丨3基端丨3 a和 內視鏡E前端面E b所形成的內部空間s a，或殘留在缺口 部1 4基端1 4 a和前端面E b所形成的內部空間S b，無法讓 附著在對物透鏡的液體完全排出外部。 [專利文獻1] -4- 200944174 日本特開昭59-93413號公報 【發明內容】 [發明欲解決之課題] 本發明是有鑑於上述狀況所硏創的發明，目的是提供 一種能夠讓附著在內視鏡前端面的體液、水、藥液等液體 確實排出外部的內視鏡用配接器。 〇 [用以解決課題之手段] 爲達成上述目的，本發明是一種具備有可裝卸地安裝 在內視鏡前端部外圍面的裝接部及從該裝接部前端朝上述 內視鏡前方突出的突出部之筒狀內視鏡用配接器，上述裝 接部，具備：在上述突出部內圍面和上述內視鏡前端面所 形成的內部空間開口，朝基端凹設在內圍面的至少一個排 液溝槽；及連結在該各排液溝槽，朝厚度方向貫通著上述 Φ 裝接部形成連通於外圍面的至少一個排液孔，上述排液溝 槽及上述排液孔是形成可讓附著在上述內視鏡前端面的體 液、水、藥液等液體利用毛細現象排出外部。 根據本發明時，上述排液溝槽是在上述突出部內圍面 和上述內視鏡前端面所形成的內部空間開口，朝上述裝接 部基端凹設在上述裝接部內圍面的同時，連結在連通上述 裝接部外圍面的上述排液孔，因此能夠讓附著在上述內視 鏡前端面的體液、水、藥液等液體利用毛細現象確實排出 外部。基於此，能夠讓內視鏡的眼界變良好，能夠順利進 -5- 200944174 行處置。 本發明中，上述排液溝槽是以具備有0.3〜1 . 3 mm範 圍的寬度和0.5〜1.5mm範圍的深度爲佳，上述排液孔是 以具備有0.3〜1.3mm範圍的直徑爲佳。若上述排液溝槽 及上述排液孔是形成上述範圍的尺寸時，則即使體液、水 、藥液等的量、種類造成上述液體的黏度改變，還是能夠 與該液體黏度無關地讓該液體利用毛細現象確實排出外部 〇 〇 若上述排液溝槽的寬度和上述排液溝槽的深度及上述 排液孔的直徑當中有一項低於上述範圍時，則上述液體利 用毛細現象雖然是可讓排出外部，但因排出量少所以沒有 充分排出。此外，若上述排液溝槽的寬度和上述排液溝槽 的深度及上述排液孔的直徑當中有一項超過上述範圍時， 則毛細現象變不足，有時會造成上述液體無法排出外部。 此外，本發明中，上述裝接部是以具備有等間隔配置 Φ 的複數上述排液溝槽爲佳。由於具備有複數的上述排液溝 槽’因此即使是在上述體液多量產生時還是能夠順暢進行 排出，又加上，上述排液溝槽是以等間隔配置，因此能夠 讓內視鏡的全視野變佳。 【實施方式】 [發明之最佳實施形態] 接著，參照附圖的同時對本發明實施形態進行更詳細 的說明。第1圖爲表示本實施形態的內視鏡用配接器說明 -6- 200944174 圖，第1 (a)圖爲側面圖，第1(b)圖爲正面圖。第2(a )、（b)圖爲表示本實施形態內視鏡用配接器的變形例 說明圖。 第1圖所示的內視鏡用配接器1，具備有：可裝卸地安 裝在內視鏡E前端部Ea外圍面的小內徑的裝接部2;及從 裝接部2前端2a朝內視鏡E前方突出的大內徑的突出部3 ，例如是由矽膠等軟質樹脂製筒體形成。內視鏡用配接器 1是根據使用目的安裝成從內視鏡E前端部Ea突出1〜 4mm。內視鏡用配接器1，也可構成爲在前端側la具備軟 套（未圖示）。 裝接部2具備有在突出部3內圍面3 a和內視鏡E前端 面Ea所形成的內部空間S開口，朝基端2b凹設在內圍面 2c的4個排液溝槽4。具體而言，排液溝槽4是在位於小內 徑的裝接部2和大內徑的突出部3之間壁面的裝接部2的前 端2a開口，以等間隔配置在圓周方向。各排液溝槽4可形 成爲具備有0.3〜1.3mm範圍的寬度W和0.5〜1.5mm範圍 的深度Η，本實施形態中，各排液溝槽4的寬度W爲 0.8mm，深度Η爲0.8mm。本實施形態中，雖然各排液溝 槽4具備同一尺寸，但只要是在上述範圍內則也可形成爲 彼此不同尺寸。 此外，裝接部2具備有連結在各排液溝槽4途中’朝厚 度方向貫通著該裝接部2形成連通於外圍面2d的至少一個 排液孔5。各排液孔5可形成爲具備有0.3〜1.3mm範圍的 直徑D，本實施形態中，各排液孔5的直徑D爲〇.8mm。 200944174 排液溝槽4是形成可讓附著在內視鏡e前端面Ea的體 液、水、藥液等液體利用毛細現象從開口流往基端2 b側 ，從排液孔5排出。 其次’針對本實施形態內視鏡用配接器1的使用狀態 進行說明。內視鏡用配接器1，於內視鏡黏膜切除手術時 ，使用在爲了確保有該切除手術所使用的手術刀和被處置 部的黏膜之間的空間。於內視鏡檢查及觀察時，使用在當 設置於內視鏡E前端面Eb的對物透鏡（未圖示）和被處 置物的黏膜接近或緊貼時可防止該對物透鏡焦點不定造成 該對物透鏡輸出畫面變紅所導致的眼界不良現象。於狹帶 區光觀察時，使用在爲了確保有上述對物透鏡和黏膜表層 毛細血管及黏膜的距離。 上述處置時，從處置部流出的血液沖洗用供應於被處 置部的水或體液（血液、淋巴液、組織液）、藥液等液體 ，會附著在內視鏡E的前端面Ea。本實施形態的內視鏡 用配接器1，其排液溝槽4是在突出部3內圍面3a和內視鏡 E前端面Ea所形成的內部空間S開口，朝基端2b凹設在 內圍面2c的同時，連結在連通裝接部2外圍面2d的排液孔 5。因此，內視鏡用配接器1能夠將附著在內視鏡E的前端 面Ea的體液、水、藥液等液體利用排液溝槽產生的毛細 現象確實排出外部。如此一來，能夠讓內視鏡E的眼界變 佳，能夠讓手術執行者順利進行處置。 另外，本發明人針對排液溝槽4的寬度W、深度Η及 排液孔5的直徑D進行各種尺寸的測試，結果得知上述範 -8 - 200944174 圍的尺寸是較適合上述液體的毛細現象排出。排液溝槽4 及排液孔5形成爲上述範圍的尺寸時，則即使體液、水、 藥液等的量及種類造成上述液體的黏度改變，還是能夠讓 該液體利用毛細現象確實排出外部。 此外，排液溝槽4的數量只要1個以上即可，但本實施 形態中具備有4個排液溝槽4，因此即使在上述液體多量產 生時還是能夠順暢進行排出。另外，因各排液溝槽4是以 等間隔形成配置，所以能夠讓內視鏡E的全視野變佳。 又，排液溝槽4，例如是可利用從裝接部2的前端2a 往基端2b朝軸方向切削內圍面2c形成，因此容易製造。 此外，內視鏡用配接器1利用模具成型時，模具的構成也 能夠簡易。排液溝槽4，於本實施形態中，是從裝接部2的 前端2a至基端2b遍及軸方向凹設在內圍面2c形成，但也 可以凹設形成爲從前端2a至排液孔5。 另外，本實施形態中，筒體是形成具備有小內徑的裝 接部2和大內徑的突出部3，但也可如第2圖所示，筒體是 形成具備有從裝接部2朝突出部3擴徑的擴徑部6，將排液 溝槽4在突出部3內圍面3a和擴徑部6內圍面6a和內視鏡E 前端面Ea所形成的內部空間開口。上述筒體還能夠讓附 著在內視鏡E前端面Ea的上述液體經由擴徑部6內圍面6a 利用排液溝槽4及排液孔5排出外部。 此外，雖然未加以圖示，但筒體也可形成和裝接部及 突出部同徑的筒體。另外，此時，排液溝槽4也可形成爲 開口在突出部內圍面和內視鏡前端面所形成的內部空間， -9- 200944174 從突出部前端至裝接部基端即遍及筒體全長凹設在內圍面 【圖式簡單說明】 第1(a)、第1(b)圖爲表示本實施形態的內視鏡用配接 器說明圖。 第2(a)、第2(b)圖爲表示本實施形態內視鏡用配接器 的變形例說明圖。 第3(a)、第3(b)圖爲習知技術的內視鏡用配接器及軟 套說明圖。 【主要元件符號說明】 1 :內視鏡用配接器 2 :裝接部 2a :裝接部前端 2b :裝接部基端 2c :裝接部內圍面 3 :突出部 3a :突出部內圍面 4 :排液溝槽 5 :排液孔 E :內視鏡BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adapter for an endoscope that is detachably attached to a front end portion of an endoscope. [Prior Art] In recent years, endoscopes have been used for surgery, examination, and the like of digestive organs and the like. As shown in Fig. 3(a), the endoscope E is attached to the outer surface of the distal end portion Ea via a rigid resin endoscope adapter 11 and detachably attached to the flexible resin soft cover 12 to prevent the installation. The objective lens or the like of the front end face Eb is not in contact with the treated portion. However, the body fluid (blood, lymph, and tissue fluid) that has flowed out from the treatment portion, and the liquid such as water or chemical liquid supplied to the treatment target for washing the body fluid may adhere to the objective lens of the distal end surface Eb of the endoscope E. This causes the vision of the endoscope E to deteriorate and hinder the treatment. Then, as shown in Fig. 3(b), it is disclosed that the liquid discharge hole 13 or the tip end portion 12a having the outer wall surface penetrating in the thickness direction is provided with the notch portion 14 to allow the liquid to pass from the liquid discharge hole 13 or the The notch portion 14 is discharged from the outer soft cover 1 2 (see, for example, Patent Document 1). However, even if the endoscope E is fitted with the soft cover 1 2' having the above-described liquid discharge hole i 3 or the notch portion 14 4, the body fluid remains in the liquid discharge hole 3 base end 丨 3 a and the front end surface of the endoscope E The internal space sa formed by E b or the internal space S b formed by the base end 14 a of the notch portion 14 and the front end surface E b cannot completely discharge the liquid adhering to the objective lens to the outside. [Problem to be Solved by the Invention] The present invention has been made in view of the above circumstances, and an object of the invention is to provide an attachment The liquid such as body fluid, water, and chemical liquid on the front end surface of the endoscope is actually discharged from the external adapter for the endoscope. 〇 [Means for Solving the Problem] In order to achieve the above object, the present invention provides an attachment portion that is detachably attached to a peripheral surface of a front end portion of an endoscope, and protrudes from a front end of the attachment portion toward the front end of the endoscope The cylindrical endoscope adapter of the protruding portion, wherein the attaching portion includes an inner space opening formed in the inner peripheral surface of the protruding portion and the front end surface of the endoscope, and the inner peripheral surface is recessed toward the base end And at least one liquid discharge groove; and the liquid discharge groove is connected to the Φ attachment portion in a thickness direction to form at least one liquid discharge hole communicating with the outer surface, wherein the liquid discharge groove and the liquid discharge hole are It is formed so that a liquid such as body fluid, water, or chemical liquid adhering to the front end surface of the endoscope can be discharged to the outside by capillary action. According to the invention, the liquid discharge groove is an inner space opening formed in the inner peripheral surface of the protruding portion and the front end surface of the inner mirror, and is recessed toward the inner peripheral surface of the attaching portion toward the proximal end of the attaching portion. Since the liquid discharge hole that communicates with the outer peripheral surface of the attachment portion is connected, the liquid such as body fluid, water, or chemical liquid adhering to the distal end surface of the endoscope can be reliably discharged to the outside by capillary action. Based on this, the eyesight of the endoscope can be made good, and it can be smoothly handled in -5-200944174. In the present invention, it is preferable that the liquid discharge groove has a width in a range of 0.3 to 1.3 mm and a depth in a range of 0.5 to 1.5 mm, and the liquid discharge hole is preferably provided with a diameter in a range of 0.3 to 1.3 mm. . When the liquid discharge groove and the liquid discharge hole are in the size of the above range, even if the viscosity of the liquid changes due to the amount and type of body fluid, water, chemical solution, etc., the liquid can be allowed to be independent of the liquid viscosity. If the width of the liquid discharge groove and the depth of the liquid discharge groove and the diameter of the liquid discharge hole are lower than the above range by the capillary phenomenon, the capillary utilization phenomenon of the liquid can be made. It is discharged to the outside, but it is not discharged sufficiently due to the small amount of discharge. Further, if one of the width of the liquid discharge groove and the depth of the liquid discharge groove and the diameter of the liquid discharge hole exceeds the above range, the capillary phenomenon becomes insufficient, and the liquid may not be discharged to the outside. Further, in the invention, it is preferable that the attaching portion is a plurality of the liquid discharging grooves provided with Φ at equal intervals. Since the plurality of the liquid discharge grooves are provided, the discharge can be smoothly performed even when a large amount of the body fluid is generated, and the liquid discharge grooves are arranged at equal intervals, so that the entire field of view of the endoscope can be made. Better. [Embodiment] BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Fig. 1 is a view showing an adapter for an endoscope according to the present embodiment. -6- 200944174. Fig. 1(a) is a side view, and Fig. 1(b) is a front view. Fig. 2(a) and Fig. 2(b) are diagrams showing a modification of the adapter for an endoscope according to the present embodiment. The adapter 1 for an endoscope shown in Fig. 1 includes an attachment portion 2 having a small inner diameter that is detachably attached to a peripheral surface of the distal end portion Ea of the endoscope E, and a distal end 2a of the attachment portion 2 The protruding portion 3 having a large inner diameter that protrudes toward the front side of the endoscope E is formed, for example, of a soft resin cylinder such as silicone rubber. The adapter for the endoscope 1 is attached to protrude from the front end portion Ea of the endoscope E by 1 to 4 mm depending on the purpose of use. The adapter 1 for an endoscope may be configured to have a soft cover (not shown) on the distal end side la. The attaching portion 2 is provided with an inner space S opening formed in the inner surface 3a of the protruding portion 3 and the front end surface Ea of the endoscope E, and four liquid discharge grooves 4 recessed in the inner peripheral surface 2c toward the proximal end 2b. Specifically, the drain groove 4 is opened at the front end 2a of the attachment portion 2 on the wall surface between the attachment portion 2 having a small inner diameter and the projection portion 3 having a large inner diameter, and is disposed at equal intervals in the circumferential direction. Each of the liquid discharge grooves 4 may be formed to have a width W in the range of 0.3 to 1.3 mm and a depth 范围 in the range of 0.5 to 1.5 mm. In the present embodiment, the width W of each of the liquid discharge grooves 4 is 0.8 mm, and the depth Η is 0.8mm. In the present embodiment, each of the drain grooves 4 has the same size, but may be formed to have different sizes as long as they are within the above range. Further, the attaching portion 2 is provided with at least one liquid discharge hole 5 that is connected to the outer peripheral surface 2d so as to penetrate in the thickness direction in the middle of each liquid discharge groove 4. Each of the liquid discharge holes 5 may be formed to have a diameter D in the range of 0.3 to 1.3 mm. In the present embodiment, the diameter D of each of the liquid discharge holes 5 is 〇.8 mm. 200944174 The liquid discharge groove 4 is formed so that a liquid such as a body fluid, water or a chemical liquid adhering to the front end surface Ea of the endoscope e can be discharged from the opening to the proximal end 2b side by capillary action, and discharged from the liquid discharge hole 5. Next, the state of use of the adapter 1 for the endoscope according to the present embodiment will be described. The adapter 1 for the endoscope is used in the endoscopic mucosal resection for the space between the scalpel used to secure the resection and the mucosa of the treated portion. In the endoscope inspection and observation, when the objective lens (not shown) provided on the front end surface Eb of the endoscope E and the mucosa of the object to be treated are close to or in close contact with each other, the focus of the object lens can be prevented from being indefinitely caused. The ocular defect caused by the reddening of the object lens output screen. In the observation of light in the narrow zone, it is used to ensure the distance between the capillaries and mucosa of the above-mentioned objective lens and mucosa. At the time of the above-described treatment, the blood which is supplied from the treatment portion is supplied with water such as water or body fluid (blood, lymph, tissue fluid) or chemical liquid supplied to the portion to be placed, and adheres to the distal end surface Ea of the endoscope E. In the adapter 1 for an endoscope according to the present embodiment, the drain groove 4 is an opening in the inner space S formed by the inner surface 3a of the protruding portion 3 and the front end surface Ea of the endoscope E, and is recessed toward the base end 2b. The inner peripheral surface 2c is connected to the liquid discharge hole 5 that communicates with the outer peripheral surface 2d of the attachment portion 2. Therefore, the endoscope attachment 1 can reliably discharge the liquid generated by the liquid drain, such as body fluid, water, or chemical liquid, which is attached to the front end surface Ea of the endoscope E, to the outside. As a result, the eyesight of the endoscope E can be improved, and the surgeon can be handled smoothly. Further, the inventors conducted various kinds of tests on the width W, the depth Η of the drain groove 4, and the diameter D of the drain hole 5, and as a result, it was found that the size of the above-mentioned range VIII - 200944174 is suitable for the capillary of the above liquid. The phenomenon is discharged. When the liquid discharge groove 4 and the liquid discharge hole 5 are formed in the above-described range, even if the viscosity and the viscosity of the liquid change due to the amount and type of the body fluid, the water, the chemical liquid, or the like, the liquid can be reliably discharged to the outside by the capillary phenomenon. Further, the number of the liquid discharge grooves 4 may be one or more. However, in the present embodiment, the four liquid discharge grooves 4 are provided. Therefore, even when the liquid is generated in a large amount, the discharge can be smoothly performed. Further, since the respective drain grooves 4 are arranged at equal intervals, the entire field of view of the endoscope E can be improved. Further, the drain groove 4 can be formed by, for example, cutting the inner peripheral surface 2c from the distal end 2a of the attaching portion 2 toward the proximal end 2b in the axial direction, and thus it is easy to manufacture. Further, when the adapter 1 for the endoscope is molded by a mold, the configuration of the mold can be simplified. In the present embodiment, the liquid discharge groove 4 is formed by recessing the inner peripheral surface 2c from the distal end 2a to the proximal end 2b of the attachment portion 2 in the axial direction. However, the drainage groove 4 may be recessed from the front end 2a to the liquid discharge. Hole 5. Further, in the present embodiment, the cylindrical body is formed with the attaching portion 2 having a small inner diameter and the protruding portion 3 having a large inner diameter. However, as shown in Fig. 2, the cylindrical body may be formed with the secondary attaching portion. 2, the enlarged diameter portion 6 which is expanded toward the protruding portion 3, and the inner space opening formed by the liquid discharge groove 4 in the inner surface 3a of the protruding portion 3 and the inner circumferential surface 6a of the enlarged diameter portion 6 and the front end surface Ea of the endoscope E . The cylinder can also discharge the liquid adhering to the front end surface Ea of the endoscope E through the liquid discharge groove 4 and the liquid discharge hole 5 through the inner peripheral surface 6a of the enlarged diameter portion 6. Further, although not shown, the tubular body may have a cylindrical body having the same diameter as the attachment portion and the protruding portion. In addition, at this time, the liquid discharge groove 4 may also be formed as an inner space formed by the opening in the inner peripheral surface of the protruding portion and the front end surface of the endoscope, -9- 200944174 from the front end of the protruding portion to the base end of the attachment portion, that is, the cylindrical body Full-length recessed inner circumferential surface [Simplified description of the drawings] Figs. 1(a) and 1(b) are explanatory views showing the adapter for the endoscope according to the embodiment. Fig. 2(a) and Fig. 2(b) are diagrams showing a modification of the adapter for an endoscope according to the present embodiment. Figs. 3(a) and 3(b) are explanatory diagrams of the adapter and the soft case for the endoscope according to the prior art. [Description of main component symbols] 1 : Adapter for endoscope 2 : Attachment 2a : Attachment end 2b : Attachment base 2c : Attachment inner cover 3 : Projection 3a : Projection inner face 4: drain groove 5: drain hole E: endoscope
Ea =內視鏡內圍面 S :內部空間 -10-Ea = inner mirror inner surface S : internal space -10-