CN105877686A - A continuously variable angle endoscope - Google Patents

Abstract

The invention belongs to the field of medical instruments, relates to a continuous variable angle technology and an endoscope technology, and particularly relates to a continuous variable angle endoscope. It discloses a function that has fused multiple fixed viewing direction angle endoscope to viewing direction angle can the continuous variation, can satisfy the continuous variable angle endoscope that different viewing directions observed needs, when can effectively avoiding a plurality of fixed viewing direction angle mirror cooperations during the operation, by the time delay problem that changes the endoscope and arouse, the change linking problem of the observation position after the change and the observation position before the change, and the continuity of observing is interrupted the problem, can provide more effective guarantee for the success of operation.

Description

A continuously variable angle endoscope

technical field

The invention belongs to the field of medical instruments and relates to continuously variable angle technology and endoscope technology, in particular to a continuously variable angle endoscope.

Background technique

Endoscope is a commonly used medical device. It enters the human body through the natural channel of the human body or through a small incision made by surgery. When used, the endoscope is introduced into the pre-examination organ, and the changes in the relevant parts can be directly peeped. Essential instruments for minimally invasive surgery.

Endoscopes have two important performance indicators, namely imaging quality and field of view. With the advancement of optical imaging technology and electronic imaging technology, the technology of high-definition endoscopy has developed relatively mature, and the imaging quality is sufficient to meet the needs of current medicine. In terms of the field of view of the endoscope, it has also developed from the traditional front-view mirror (view angle 00°, 12°) to the squint mirror (view angle 30°, 45°) and side-view mirror (view angle 70° °, 90°), the field of view of the endoscope has been expanded.

However, there is a problem in the above-mentioned front-view mirror, squint mirror and side-view mirror, that is, the viewing angle is fixed, and there are limitations in use, and multiple endoscopes are often required to be used together to meet the needs. This method of multi-mirror cooperation also has the problem of delay in replacing the endoscope, the problem of changing the observation position, and the problem of continuity of observation. These problematic factors all affect the success of the operation to varying degrees.

Contents of the invention

In order to overcome the deficiencies of the prior art, the present invention proposes a continuously variable angle endoscope. The continuously variable angle endoscope integrates the front-view mirror, squint mirror and side-view mirror together, and realizes the functions of three mirrors with one endoscope, and the viewing angle can be continuously changed to meet the needs of different viewing directions. .

The technical solution of the invention is: it includes a continuously variable angle system, an endoscope imaging system and an illumination system. The continuously variable angle system includes a lens seat, a rotating shaft, a prism seat, a prism, a hanging shaft, a connecting piece, a cover, a connecting rod, a sheath, a sliding seat, a sliding block, a hand wheel and a connecting sleeve.

Further, the rotation shaft passes through the lens holder and the prism holder and is fixed on the lens holder, and the prism holder is limited in the lens holder so that the prism holder can only rotate around the rotation axis.

Further, the prism is bonded to the prism seat, and by changing the angular position of the prism, a variable viewing angle is provided to the endoscopic imaging system.

Further, the hanging shaft is fixed on the prism base to provide a connection point for the driving element rotating the prism.

Further, the connecting piece is hung on the hanging shaft and fixed together with the connecting rod to combine the prism base and the driving connecting rod.

Furthermore, the protective cover is made of transparent material, one end of which is an arc-shaped structure, and is fixed on the lens holder, which protects internal components such as prisms without affecting the imaging of the imaging system.

Further, one end of the connecting rod is fixed to the connecting piece, and the other end is fixed to the sliding block, so as to transmit the driving force from the handle end of the endoscope to the lens end.

Further, one end of the sheath is fixed on the lens holder, and the other end is fixed to the sliding seat, which serves as a connecting piece connecting the handle end of the endoscope and the lens end, and also serves as a protection piece for protecting internal components.

Further, the sliding seat is the main element of the handle end of the continuously variable angle system, and other elements of the handle end are all connected to it.

Further, the sliding block is installed between the sliding seat and the hand wheel, and its function is to convert the rotary motion of the hand wheel into linear motion.

Further, one end of the hand wheel is fitted on the sliding seat, and can rotate around the axis of the sliding seat, and its thread engages with the thread on the sliding block to drive the sliding block to move. In addition, there is a scale representing the angle of view on the hand wheel, Cooperate with the engraved line on the slider to display the current viewing angle.

Further, one end of the connecting sleeve is fixed on the sliding seat, and the hand wheel is limited on the sliding seat so that it cannot move axially, and the other end is connected to the observation end of the fixed endoscope imaging system.

Further, besides being the main carrier of the head end of the continuously variable angle system, the lens mount is also equipped with a light exit port of the lighting system.

Further, the lens end of the endoscope imaging system is installed close to the prism.

The working principle of the present invention is: when in use, rotate the handwheel, and convert the rotational motion of the handwheel around the optical axis of the imaging system into The linear motion of the axial axis is transmitted to the variable angle components such as the lens seat, the rotating shaft, the prism seat, the prism and the hanging shaft, so that the prism rotates around the rotating axis perpendicular to the optical axis of the imaging system, so as to realize the vision The continuous change function of the angle, and then cooperate with the imaging system and lighting system of the endoscope to form a continuously variable angle endoscope system.

Through the above disclosure, the beneficial effect of the present invention is: a continuously variable angle endoscope described in the present invention combines the functions of multiple fixed viewing angle endoscopes, and the viewing angle can be continuously changed to meet To observe the needs of different viewing directions, in the operation, only this kind of endoscope is needed, which can effectively avoid the time delay caused by changing the endoscope when the multi-viewing gonioscope is used. The problem of changing the connection of the observation position before replacement and the interruption of the continuity of observation can provide a more effective guarantee for the success of the operation.

Description of drawings

Non-limiting and non-exhaustive implementations of the present disclosure are described with reference to the following drawings, wherein like reference numerals refer to like parts throughout the various views unless otherwise indicated.

The advantages of the present disclosure will be better understood with reference to the following description and accompanying drawings.

Fig. 1 is a system block diagram of the present invention.

Fig. 2 is a schematic diagram of the appearance structure of the present invention.

Fig. 3 is a structural schematic diagram of removing the protective cover and sheath at the head end of the present invention.

Fig. 4 is a structural schematic view of the sheath and the handwheel for removing the handle end of the present invention.

In the figure, 1. Continuous variable angle system, 2. Endoscope imaging system, 3. Illumination system, 4. Lens holder, 5. Rotation shaft, 6. Prism holder, 7. Prism, 8. Hanging shaft, 9. Connection Sheet, 10, protective cover, 11, connecting rod, 12, sheath, 13, sliding seat, 14, sliding block, 15, hand wheel, 16, connecting sleeve.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

As shown in the figure, a continuously variable angle endoscope according to the present invention is mainly composed of three parts: a continuously variable angle system (1), an endoscope imaging system (2) and an illumination system (3). The continuously variable angle system (1) is an innovative part of the present invention, and the endoscope imaging system (2) and lighting system (3) adopt the prior art.

The continuously variable angle system (1) is mainly composed of a lens holder (4), a rotating shaft (5), a prism holder (6), a prism (7), a hanging shaft (8), a connecting piece (9), and a protective cover ( 10), connecting rod (11), sheath (12), sliding seat (13), sliding block (14), hand wheel (15) and connecting sleeve (16) and other components. Among them, the lens mount (4), the rotation shaft (5), the prism mount (6), the prism (7) and the hanging shaft (8) together constitute the variable angle assembly at the head end, the connecting piece (9) and the connecting rod (11 ) to form the transmission assembly, the sliding seat (13), the sliding block (14), the hand wheel (15) and the connecting sleeve (16) together form the motion drive assembly at the handle end.

When using a continuously variable angle endoscope, rotate the hand wheel (15), drive the transmission assembly through the drive assembly, and the transmission assembly transmits it to the variable angle assembly, and the variable angle assembly rotates the corresponding angle according to the transmitted motion. This process is completed The 90° steering transmission of a rotary motion, the rotation of the handwheel (15) is continuous, and the rotation of the prism (7) transmitted to the variable angle assembly is also continuous, thereby realizing the continuous change function of the viewing angle, and the handwheel The rotation angle of (15) corresponds to the rotation angle of the prism (7), so a scale representing the viewing angle can be engraved on the hand wheel (15) to display the current viewing angle.

The lens end of the endoscope imaging system (2) is installed close to the prism (7), so that on the premise of ensuring the imaging field of view and not affecting the rotation of the prism, the size of the prism and the head of the endoscope can be reduced. size to reduce the size of the opening required during surgery.

In addition to traditional optical direct imaging, the endoscopic imaging system ( 2 ) can also cooperate with an image sensor for imaging, and the cooperation with any image sensor for imaging does not depart from the scope of the present disclosure. Additionally, the image sensor may be positioned anywhere within the overall system, including but not limited to the head end of the endoscope, the hand piece of the imaging device or camera, the control unit, or any other location within the system without detaching from the scope of this disclosure.

In addition to the traditional optical fiber conduction lighting method, the lighting system (3) can also be a direct lighting method, and any lighting method and lighting source can be used without departing from the scope of the present disclosure.

The content described in the embodiments of this specification is only an enumeration of the implementation forms of the inventive concept. The protection scope of the present invention should not be regarded as limited to the specific forms stated in the embodiments. Equivalent technical means that a person can think of based on the concept of the present invention.

Claims (15)

1. a continuous varied angle endoscope, includes continuous varied angle system, endoscopic imaging system and illuminator.

Continuous varied angle system the most according to claim 1, it is characterised in that include lens mount, rotary shaft, prism table, prism, hanging scroll, connect sheet, protecting cover, connecting rod, sheath, sliding seat, sliding shoe, handwheel and adapter sleeve.

Rotary shaft the most according to claim 2, it is characterised in that described rotary shaft is fixed on lens mount through lens mount and prism table, and is limited in lens mount by prism table, makes prism table can only rotate around rotary shaft.

Prism the most according to claim 2, it is characterised in that described prism is bonded on prism table, by changing the angle position of prism, provides the angle of visual field of change to endoscopic imaging system.

Hanging scroll the most according to claim 2, it is characterised in that described hanging scroll is fixed on prism table, the driving element rotated for prism provides tie point.

Connection sheet the most according to claim 2, it is characterised in that described connection sheet is articulated on hanging scroll, and is fixed together with connecting rod, prism table and drive link is combined.

Protecting cover the most according to claim 2, it is characterised in that described protecting cover is transparent material, and wherein one end is arcuate structure, is fixed on lens mount, will protect by the inner member such as prism, does not the most affect imaging system images.

Connecting rod the most according to claim 2, it is characterised in that described connecting rod one end and connection sheet are fixed, and the other end is fixed on sliding shoe, and the driving force of endoscope handle end is transmitted to camera end.

Sheath the most according to claim 2, it is characterised in that described sheath one end is fixed on lens mount, and the other end and sliding seat are fixed, i.e. as connecting endoscope handle end and the connector of camera end, again as the guard member of protection inner member.

Sliding seat the most according to claim 2, it is characterised in that described sliding seat is the main element of continuous varied angle system handle end, and other element of handle end is the most connected.

11. sliding shoes according to claim 2, it is characterised in that described sliding shoe is contained between sliding seat and handwheel, its function is the motion that is in line by the convert rotational motion of handwheel.

12. handwheels according to claim 2, it is characterized in that described handwheel one end set installs on sliding seat, can rotate around the axis of sliding seat, and the screw-threaded engagement on its screw thread and sliding shoe, sliding shoe can be driven to move, additionally there is the scale representing viewing directional angle on handwheel, coordinate with the groove on sliding shoe and can show current viewing directional angle.

13. adapter sleeves according to claim 2, it is characterised in that described adapter sleeve one end is fixed on sliding seat, is limited on sliding seat by handwheel so that it is can not make axially-movable, the other end connects the observation end of fixed endoscope imaging system.

14. lens mounts according to claim 2, it is characterised in that described lens mount, in addition to the primary load-carrying members as continuous varied angle system head end, is also equipped with the optical emission exit of illuminator.

15. endoscopic imaging systems according to claim 1, it is characterised in that described endoscopic imaging system camera end presses close to install with prism.