RU2840598C1 - Wireless light source for arthroscopic inspection - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: invention refers to medicine, particularly to orthopaedics, and can be used in arthroscopy of joints. A wireless light source for arthroscopic inspection comprises a body in the form of collapsible cylinder 83 mm long and 30 mm in diameter, divided by a partition into two chambers. One of the chambers consists of on/off contacts, and the other one consists of a light source with contacts and a battery cavity for a single galvanic cell. On the side of the latter on the end of the cylinder there is an internal thread to depth of 27 mm and an on/off button with diameter of 10 mm is placed. At the same time in the opposite end of the cylinder there is a window in the form of a light channel with a light source with diameter of 10 mm and a circular rubberized gasket placed around this source for self-fixation.

EFFECT: faster preparation for surgical manipulation, reduced risks of infectious complications while maintaining the possibility of changing the field of view by rotating the device around the arthroscope and without significantly increasing the weight of the video camera in the surgeon’s hand.

1 cl, 3 dwg, 1 ex

Description

Field of technology

The device relates to medicine, in particular to orthopedics, and can be used in arthroscopy of joints.

State of the art

Currently, specialized medical equipment optimized for arthroscopy is used to perform arthroscopic revision of joints. It consists of a digital video camera, fiber-optic light guide, monitor, recording device, control units, a pump for supplying saline solution and various additional instruments (shaver, ablator, etc.). Before performing surgical treatment, some of these devices (arthroscope, digital video camera, fiber-optic light guide) are sterilized and directly contact the surgical intervention area. At the current stage of technological development, the wired type of these devices is the most common.

Also, to change the field of view during surgical manipulation, the most common mechanism of change is directly on the arthroscope using the handle of the light guide - rotation of the fiber optic cable around the axis of the arthroscope.

Before the surgical manipulation, the medical staff prepares the surgical intervention area - lays the patient down, treats the intervention area and sets up the equipment, including laying sterile wires through the sterile surgical intervention area to the non-sterile area of the arthroscopic storage device, monitor, and control units.

However, the adopted technological features have certain disadvantages: they require a certain amount of time to prepare for surgical manipulation (laying, wiring, etc.) and increase the risk of infection due to the rotation of the fiber optic cable around the axis of the arthroscope - the transition of one of the cables from the non-sterile zone to the sterile one.

Thus, a number of portable wireless light source devices are known from the state of the art, for example, the Marina LED battery-powered light source is known, used to illuminate the surgical site during minimally invasive surgical interventions during endoscopy. It can also be used in arthroscopic and laparoscopic procedures (https://marinamedical.com/product/marina-wireless-led-light-source/).

However, the disadvantage of this device is the possibility of using only one line of arthroscopes (Marina Medical) and the significant (5.1 inches = 12.9 cm) length of the device, which makes it difficult to manipulate the arthroscope during the surgical stage.

The objective of this device is to eliminate the identified shortcomings and consists of facilitating the performance of arthroscopic revision, reducing the time for preparation for surgical manipulation, reducing the risks of infectious complications while maintaining the ability to change the field of view by rotating the device around the arthroscope and without significantly increasing the weight of the video camera in the surgeon's hand.

Disclosure of invention

The technical result of the present invention consists in reducing the time for preparation for surgical manipulation, reducing the risks of infectious complications while maintaining the ability to change the field of view due to rotation of the device around the arthroscope and without significantly increasing the weight of the video camera in the surgeon's hand.

The specified technical result is implemented due to the following design features of the device. The device is a disassemblable cylinder measuring 83×30 mm, with an internal thread at a distance of 27 mm from end A. At one end of the cylinder (end B) there is a window, which is the light channel of the device, in the recess there is the light source itself with a diameter of 10 mm, at the other end of the cylinder (end A) there is an on/off button with a diameter of 10 mm. The device consists of two separate sealed chambers: chamber 1 consists of a light source with contacts, chamber 2 consists of on/off contacts and a battery cavity for a single galvanic cell. In the window of the cylinder at end B there is a device for self-fixation of the light source (light guide) on the arthroscope. The self-fixation system is made in the form of a circular rubberized gasket placed around the source in the light channel of the device, which allows for reliable fixation of the device and self-centering on the optics. This type of fixation is universal and fits most available types of arthroscopic optics, regardless of the diameter of the optics. In addition, the weight of the device is 115 grams.

The device can be made of aluminum with titanium coating, medical steel or other durable materials used in the production of medical instruments.

Brief description of the drawings

Fig. 1 shows a wireless light source for arthroscopic revision, where 1 is end A, 2 is end B.

In Fig. 2, where 3 is chamber 1, 4 is chamber 2, 5 is a projection of the location of a circular rubberized gasket placed around the source in the light channel of the device.

Implementation of the invention

The device is a collapsible cylinder measuring 83×30 mm, with an internal thread at a distance of 27 mm from end A. At one end of the cylinder there is a window, which is the light channel of the device, in the recess there is the light source itself with a diameter of 10 mm, at the other end of the cylinder there is an on/off button with a diameter of 10 mm. The device consists of two separate sealed chambers: chamber 1 consists of on/off contacts, chamber 2 consists of a light source with contacts and a battery cavity for a single galvanic element. In the window of the cylinder at end B there is a device for self-fixation of the light guide on the arthroscope. The self-fixation system is implemented using a circular rubberized gasket in the light channel of the device, which allows for reliable fixation of the device and self-centering on the optics.

Example 1

Patient Zh., 42 years old, was admitted to the department complaining of pain in the right shoulder joint. Based on clinical and radiological examination methods, damage to the rotator cuff of the shoulder joint was diagnosed and, together with the patient, a decision was made to perform an arthroscopic revision of the shoulder joint.

During the arthroscopic revision, a wireless light source was used as a light guide. During the arthroscopic revision, damage to the biceps tendon and the subscapularis tendon was detected, then tenodesis in the proximal parts of the intertubercular groove and a suture of the subscapularis tendon were performed using standard techniques. The duration of the operation was 90 minutes, compared with the previously used light guides, the preparation time for the operation was reduced by 10 minutes. Fig. 3 shows the intraoperative picture when performing an arthroscopic revision using a wireless light source. During the use of the declared light source, the source housing did not heat up due to the high heat capacity of the housing, made in this case of aluminum with a titanium coating, and the LED itself emitted a low amount of heat, since an energy-efficient diode was used in this case. A Li-Ion 2000 mA battery was used as a galvanic power source, which made it possible to provide lighting for the entire necessary time of the surgical intervention.

Thus, the resulting device has the following advantages over previously known ones:

• wireless design;

• ease of use;

• ergonomics - ease of manipulation of the light guide and rotation of the optical chamber due to the weight and size of the device and the absence of the need to manipulate the wired light guide passing from the sterile to the non-sterile zone;

• universal fixation to the light guide due to the circular rubberized gasket;

• suitable for different types of optics;

• reduces the risk of infectious complications by reducing the number of interactions with fragments of the light guide located in the non-sterile zone;

• reduces the time required to prepare for surgical procedures due to the absence of the need to lay a wire light guide from the optics to the arthroscopic stand;

• the absence of heating of the case is achieved through the use of an energy-efficient diode with low heat generation and high heat capacity of the device case;

• sufficient operating time from 1 battery element (2 hours) due to the energy-efficient power element.

Claims (1)

A wireless light source for arthroscopic revision, comprising a housing in the form of a disassemblable cylinder 83 mm long and 30 mm in diameter, divided by a partition into two chambers, one of which consists of on/off contacts, and the other consists of a light source with contacts and a battery cavity for a single galvanic element, on the side of the latter, an internal thread is made on the end of the cylinder to a depth of 27 mm and an on/off button with a diameter of 10 mm is placed, while in the opposite end of the cylinder there is a window in the form of a light channel with a light source of 10 mm in diameter placed in its recess and a circular rubberized gasket placed around this source for self-fixation.