Nikkiso Company Limited

Fujifilm Corporation

Fujinon Corporation

Chiba University

Tatsuo Igarashi

Hiroshi Fujita

Yoichi Miyake

Toshiya Nakaguchi

Takuro Ishii

Harufumi Makino

Yoshimichi Masuda

Yoshihiko Kinoshita

Masanori Niiyama

Takuji Asano

Rongfu Lu

Yoshihisa Matsunaga

Masayuki Teranuma

Masashi Sekine

Yukio Naya

Manami Koshizuka

Satoki Zenbutsu

When sucking a fluid within a body cavity, foreign matter included in the fluid which exceeds the filtering diameter of a filtering apparatus may cause clogging of the filtering apparatus. Another concern is that a body cavity membrane getting stuck to a suction port of a suction tube may lead to the suction port being closed off. In response to such problems as these, provided is a suction apparatus, comprising a suction tube, and a filter member. The suction tube has side holes formed in a tube wall on a body cavity-side tail end part. The filter member has a tubular cap shape and covers a tail end aperture of the suction tube and the side holes, is formed from a foam body with an average aperture opening of 500-1000 &#x3bc;m, and has a thickness of 7.5 mm or more.

Suction apparatus for peritoneal cavity fluid perfusion system

The present invention provides an operation field-securing device that secures an operation field by being deployed within the body cavity. The operation field-securing device includes at least three elongated parts extending radially in a deployed state; and curved parts, the number of which is the same as that of the elongated parts. Each pair of the two adjacent elongated parts is connected at their one ends by the curved part. Each of the curved parts is convex toward a side opposite to the elongated part. In the deployed state, the curved parts are arranged circumferentially. By deforming the curved parts, the operation field-securing device is capable of being brought into either one of a contracted state where a distance between the adjacent elongated parts is shortened by making the elongated parts close to each other and the deployed state where the distance between the elongated parts is expanded.

Operation field-securing device

A body-wall-contact-type water tank () is equipped with: a water-tank body for storing a fluid to be supplied into a body cavity, and positioned so as to contact a body wall (); a through-hole which conveys the fluid stored in the water-tank body into the body cavity via an incision formed in the body wall (), and which is formed in the bottom section of the water-tank body; and a connecting means for connecting, in a fluid-tight manner, the water-tank body to the body wall () and/or to a retractor () attached to the incision.

Body-wall-contact-type water tank and in-cavity fluid perfusion system

In a three-dimensional image forming device for forming a phantom three-dimensional image in accordance with an image of an inner face of a tubular structure to be observed, luminance information of pixels corresponding to a prescribed range of each frame image of the tubular structure is obtained under prescribed lighting conditions when an imaging device with an optical axis extending to an axial direction of the tubular structure moves, a relative distances in a depth direction between points and an objective lens is calculated in accordance with the luminance information, pixels corresponding to the prescribed range of each frame image in the inner face of the tubular structure is arrayed in reflection of the relative distance, and the arrayed pixels are combined for a plurality of the frame images to form a three-dimensional image of the inner face of the tubular structure.

Three-dimensional-image forming device, three dimensional-image forming method and program

A body cavity observation apparatus includes a treatment tool to be inserted into a body cavity of a subject with an insertion tool as a guide, an observation section attached to an opening of a body wall of the subject, a monitor for displaying the body cavity captured by the observation section, and a marker position-detecting device for detecting a position of a marker part applied to the treatment tool or insertion tool from an image showing the body cavity captured by the observation section. The marker position-detecting device includes a pixel extracting device for extracting a group of pixels in the same color as the color of the marker part from the image and a calculation device for calculating a position of the barycenter of the group of pixels as a position of the marker part. The pixel extracting device extracts a pixel whose output value of a color component included in a color of the marker part among R, G, and B output values outputted from an image pickup device of the observation section is bigger than an output value of a color component that is not included in a color of the marker part by a predetermined threshold of the group of pixels.

Observation apparatus that detects position of a treatment tool from an image

According to a body cavity interior observing apparatus of the present invention, a non-tracked region to be displayed can be switched between a first non-tracked region and a second non-tracked region which is larger than the first non-tracked region, and in a search for an affected area in which it is preferable to track a treating instrument in order to consistently align the position of treating instrument to the central part of the screen, the first non-tracked region having a smaller non-tracked region is selected, while in a treatment of an affected area in which a treating instrument is moved in a wide range of area, the second non-tracked region having a larger non-tracked region is selected, thereby an appropriate monitor screen can be provided in searching for an affected area and in treating an affected area.

Body cavity interior observing apparatus

Growing community of inventors

Chiba, Japan

Tatsuo Igarashi