Disclosed is a stereo endoscope system comprising stereo endoscopes of varying working lengths, working diameters and directions of view. Each stereo endoscope comprises two identical optical systems where every pair of corresponding components is permanently couple in a sideways orientation. The system is capable of withstanding harsh conditions associated with medical equipment cleaning and sterilization, particularly, the high temperatures and pressures associated with autoclaving. Each of the corresponding components of the two identical optical systems is paired and moved relative to each other to adjust focus and then affixed to create a new singular optical component. The system includes a prism block that extends the distance between the optical axes on the stereo endoscope to the position of two video chips.

Disclosed is a stereo endoscope system comprising stereo endoscopes of varying working lengths, working diameters and directions of view. Each stereo endoscope comprises two identical optical systems where every pair of corresponding components is permanently couple in a sideways orientation. The system is capable of withstanding harsh conditions associated with medical equipment cleaning and sterilization, particularly, the high temperatures and pressures associated with autoclaving. Each of the corresponding components of the two identical optical systems is paired and moved relative to each other to adjust focus and then affixed to create a new singular optical component. The system includes a prism block that extends the distance between the optical axes on the stereo endoscope to the position of two video chips.

A Carpal Tunnel Release (CTR) surgical tool is disclosed. The CRT tool is useable to perform CTR surgically endoscopically through an incision in the patient, and includes dedicated optical components within the tool. The tool also includes wireless communication means to broadcast video images from the camera to an external display without the use of any cabling. The CTR tool is modular, thus allowing different portions of the tool to be replaced, including a blade tip assembly. The CTR tool is comprised of components manufactured of materials that can be cleaned and sterilized using an autoclave alone, which allows the tool to be more easily and cheaply used in subsequent surgeries, and in contexts that may lack the resources and support traditionally necessary for surgery. The CTR system may simply comprise of the tool (and its cheaper replacement parts), a monitor having wireless capability, and a simple autoclave.

A Carpal Tunnel Release (CTR) surgical tool is disclosed. The CRT tool is useable to perform CTR surgically endoscopically through an incision in the patient, and includes dedicated optical components within the tool. The tool also includes wireless communication means to broadcast video images from the camera to an external display without the use of any cabling. The CTR tool is modular, thus allowing different portions of the tool to be replaced, including a blade tip assembly. The CTR tool is comprised of components manufactured of materials that can be cleaned and sterilized using an autoclave alone, which allows the tool to be more easily and cheaply used in subsequent surgeries, and in contexts that may lack the resources and support traditionally necessary for surgery. The CTR system may simply comprise of the tool (and its cheaper replacement parts), a monitor having wireless capability, and a simple autoclave.

An optical system for an endoscope includes an objective and a reversal system arranged after the objective. The reversal system includes at least one reversal stage for projecting the distal intermediate image as a proximal intermediate image into a proximal intermediate image plane. The reversal system imprints on the proximal intermediate image a first longitudinal chromatic aberration referred to a predetermined wavelength from the visible spectrum and a predetermined wavelength from the near infrared range. The objective imprints on the distal intermediate image a second longitudinal chromatic aberration referred to the predetermined wavelength from the visible spectrum and the predetermined wavelength from the near infrared range. The second longitudinal chromatic aberration has the opposite sign relative to the first longitudinal chromatic aberration, which reduces the longitudinal chromatic aberration caused by the reversal system in the proximal intermediate image.

A multiple target optical imaging apparatus performs optical imaging of a plurality of physically-separated imaging sites using a light source, a two-dimensional detector and a plurality of fiber bundles. Each fiber bundle has a distal end positioned adjacent to a different one of the imaging sites, and conveys source light from its proximal end to its distal end, while conveying an optical signal from its respective imaging site from its distal end to its proximal end. The optical signals may be simultaneously detected on different regions of the detector. The system is small, and may be used to image sites on an ambulatory animal, with the light source and detector located in a portable housing attached to the animal. Different types of imaging may be used, including fluorescence imaging, hyperspectral imaging, or polarization imaging.

An endoscopic imaging system is disclosed that includes an endoscope having a first channel and a second channel, a high-power, multi-wavelength LED array, a digital micro-mirror device that receives light directed from the high-power, multi-wavelength LED array and generates spatial frequency patterns, and dichroic mirror that separates reflectance and fluorescence images.

Surgical visualization systems and related methods are disclosed herein, e.g., for providing visualization during surgical procedures. Systems and methods herein can be used in a wide range of surgical procedures, including spinal surgeries such as minimally-invasive fusion or discectomy procedures. Systems and methods herein can include various features for enhancing end user experience, improving clinical outcomes, or reducing the invasiveness of a surgery. Exemplary features can include access port integration, hands-free operation, active and/or passive lens cleaning, adjustable camera depth, and many others.

An endoscopic instrument, in particular an endoscope, with a jointed portion of a shaft for connecting a distal part of the shaft with a proximal part of the shaft in a way to be angulated. For this purpose, the distal shaft part is connected with the proximal shaft part by two rigid jointed bars of different lengths, wherein each of the rigid jointed bars attaches with a joint on the distal shaft part and a joint on the proximal shaft part.

An optical system for rigid endoscope includes an objective optical system, an eyepiece optical system, and a relay optical system which is disposed between the objective optical system and the eyepiece optical system. The objective optical system includes in order from an object side, a first lens having a negative refractive power, a second lens having a positive refractive power, a third lens having a positive refractive power, and a fourth lens having a negative refractive power. The following conditional expressions (1) and (2) are satisfied:
−3<(RL1i+RL1o)/(RL1i−RL1o)<−1.3  (1)
30<νdL1  (2) where, RL1o denotes a radius of curvature of an object-side surface of the first lens, RL1i denotes a radius of curvature of an image-side surface of the first lens, and νdL1 denotes Abbe number for the first lens.