CN113440090A - Split medical endoscope - Google Patents

Abstract

The invention relates to a split type medical endoscope which can improve the light guide rate while overcoming the size limit of the endoscope. The split medical endoscope comprises a near-side core body, a far-side core body, a near-side glass optical fiber bundle and a far-side glass optical fiber bundle, wherein the far-side core body is detachably connected with the near-side core body, the near-side glass optical fiber bundle is installed in the near-side core body, the far-side glass optical fiber bundle is installed in the far-side core body, the near-side glass optical fiber bundle comprises a plurality of near-side glass optical fibers which are arranged in a bundle shape, the near-side glass optical fibers comprise a light source end, a light guide section and an ejection end which are sequentially connected, and the ejection ends of all the near-side glass optical fibers are fused to form an integral light gathering part; the far-side glass optical fiber bundle comprises a plurality of far-side glass optical fibers, and one ends of the plurality of far-side glass optical fibers are thermally fused to form an integral receiving part; the light-condensing portion and the receiving portion are configured to: when the distal core and the proximal core are connected, the light-focusing portion focuses the light transmitted from the light-guiding sections of all the proximal glass optical fibers to the receiving portion.

Description

Split medical endoscope

Technical Field

The invention relates to a split type medical endoscope.

Background

The existing endoscope is divided into an operation part (also called a proximal part) for a doctor to operate and an insertion part (also called a distal part) for inserting into a human body, which are detachably connected, so that the part inserted into the human body is replaceable at one time, and cross infection among patients is avoided. With the advent of this split design, the glass fiber bundle in the endoscope is also split, i.e., the glass fiber bundle in the proximal portion is used to connect with and conduct light to the light source, and the glass fiber bundle in the distal portion interfaces with the glass fiber bundle in the proximal portion to receive light from the light source and transmit the light out to the front end of the distal portion. Therefore, the light guide rate of the split glass fiber bundle is only a fraction of that of the continuous glass fiber bundle, so that the front end of the endoscope is not sufficiently illuminated, and the imaging effect is further influenced.

Generally, in order to increase the light guiding rate, the light guiding area of the glass fiber bundle is increased, that is, the volume of the glass fiber bundle is increased. However, since the size of the endoscope is limited, the structure for attaching the glass optical fiber bundle to the endoscope, particularly the structure for fixing both ends of the glass optical fiber bundle to the endoscope is also limited, and therefore, in the field of the endoscope, it is difficult to increase the light guide efficiency by increasing the volume of the glass optical fiber bundle.

Disclosure of Invention

The invention aims to solve the technical problem that contradiction exists between improvement of the light guide rate of a split medical endoscope and size limitation of an endoscope mounting structure on a glass optical fiber bundle.

In order to solve the technical problems, the invention adopts the main technical scheme that:

the invention provides a split type medical endoscope, which comprises a near-side core body, a far-side core body, a near-side glass optical fiber bundle and a far-side glass optical fiber bundle, wherein the far-side core body is detachably connected with the near-side core body; the far-side glass optical fiber bundle comprises a plurality of far-side glass optical fibers, and one ends of all the far-side glass optical fibers are thermally fused to form an integral receiving part; the light-condensing portion and the receiving portion are configured to: when the distal core and the proximal core are connected, the light-focusing portion focuses the light transmitted from the light-guiding sections of all the proximal glass optical fibers to the receiving portion.

Preferably, the light source ends of all the near side glass optical fibers are thermally fused to form an integral light source connecting part; the projection of the light source connecting part and the light-condensing part is located within the projection range of the light guide sections of all the near side glass optical fibers in the projection of the plane perpendicular to the center line of the near side glass optical fiber bundle.

Preferably, the light-concentrating portion comprises a first end connected with the light-guiding section of all the proximal glass optical fibers and a second end far away from the light-guiding section; the light-condensing part has the following two structures: the structure I is as follows: the light-gathering part comprises a circular truncated cone, and the end surface of the small end of the circular truncated cone forms the end surface of the second end; the structure II is as follows: the end face of the second end of the light-condensing portion is configured as a spherical surface.

Preferably, the light guide sections of the plurality of proximal glass optical fibers are gathered to form a light guide part of the proximal glass optical fiber bundle; the diameter of the light source connecting part is 3mm-4mm, and the diameter of the light guide part is 4mm-5 mm; when the light-gathering part comprises a circular table, the diameter of the first end part of the light-gathering part is 4mm-5mm, and the diameter of the second end part of the light-gathering part is 3mm-4 mm; when the end face of the second end part of the light-gathering part is constructed into a spherical surface, the rest part of the light-gathering part except the second end part is a cylinder, and the diameter of the cylinder is 3-4 mm; the diameter of the receiving part is 3mm-4 mm.

Preferably, the near-side glass optical fiber bundle comprises a first metal sleeve, a hose and a second metal sleeve which are sequentially connected, the first metal sleeve wraps the light source connecting part, the hose wraps the light guide section, and the second metal sleeve wraps the light gathering part; a first mounting hole is formed in the near-side core body, the second metal sleeve is directly sleeved with the first mounting hole, or the second metal sleeve is sleeved with a first metal connecting pipe in the first mounting hole, and one end, close to the far-side glass optical fiber bundle, of the second metal sleeve retracts relative to the first mounting hole; the far-side glass optical fiber bundle comprises a third metal sleeve wrapping the receiving part, and the receiving part and one end face of the third metal sleeve, which is close to the near-side glass optical fiber bundle, are flush; a second mounting hole is formed in the far-side core body, the third metal sleeve is directly sleeved with the second mounting hole, one end, close to the near-side glass optical fiber bundle, of the third metal sleeve is inserted into the first mounting hole and abutted against the second metal sleeve, or the third metal sleeve is sleeved with a second metal connecting pipe in the second mounting hole, one ends, close to the near-side glass optical fiber bundle, of the third metal sleeve and the second metal connecting pipe are inserted into the first mounting hole and abutted against the second metal sleeve; when the light-gathering part comprises a circular truncated cone, the light-gathering part is coaxial with the receiving part, a second end part of the light-gathering part is abutted against the receiving part, and the diameter of the receiving part is smaller than or equal to that of the second end part; in the case where the second end portion of the light-condensing portion is configured as a spherical surface, the second end portion of the light-condensing portion is spaced apart from the receiving portion, and the diameter of the receiving portion is equal to or smaller than the diameter of the small end of the imaginary circumscribed pyramid of the spherical surface.

Preferably, the first metal sleeve is bonded to the light source connection part; the light-gathering part is bonded with the second metal sleeve; the receiving part is bonded with the third metal sleeve; the sleeve joint adopts threaded connection or bonding; the light-gathering part comprises a circular truncated cone: the end face of the second end part of the light-gathering part is flush with the outer end face of the second metal sleeve, and the inner wall of the second metal sleeve is matched with the light-gathering part in shape; under the condition that the second metal sleeve is directly sleeved with the first mounting hole, the outer wall of the second metal sleeve is matched with the inner wall of the first mounting hole in shape, and the first mounting hole is a circular hole with equal diameter; under the condition that the second metal sleeve is sleeved with the first metal connecting pipe, the first mounting hole is a circular hole with the same diameter, the first metal connecting pipe is a circular pipe with the same outer diameter and the same wall thickness, and the outer wall of the second metal sleeve is matched with the inner wall of the first metal connecting pipe in shape; in the case where the second end of the light-condensing portion is configured as a spherical surface: the second metal sleeve is a circular pipe with the same outer diameter and the same wall thickness; under the condition that the second metal sleeve is directly sleeved with the first mounting hole, the first mounting hole is a circular hole with the same diameter; under the condition that the second metal sleeve is sleeved with the first metal connecting pipe, the first mounting hole is a circular hole with the same diameter, and the first metal connecting pipe is a circular pipe with the same outer diameter and the same wall thickness; the second mounting hole is a stepped hole; under the condition that the third metal sleeve is directly sleeved with the second mounting hole, the outer wall of the third metal sleeve is matched with the second mounting hole to form a step shape; under the condition that the second metal sleeve is sleeved with the second metal connecting pipe, the outer wall of the second metal connecting pipe is matched with the second mounting hole to form a step shape, a step hole is formed in the second metal connecting pipe, and the outer wall of the third metal sleeve is matched with the step hole in the second metal connecting pipe to form the step shape.

Preferably, the lock also comprises a bolt, a key and a lock rod; one end of the plug pin is fixed to one of the far-side core body and the near-side core body, and the other end of the plug pin is inserted into the other of the far-side core body and the near-side core body in a pluggable mode; one end of the lock rod is fixed on the key, and the other end of the lock rod is movably inserted into the part where the bolt is inserted; the key can drive the lock rod to move between a locking position for preventing the plug pin from being plugged and an unlocking position for allowing the plug pin to be plugged and unplugged under the action of external force.

Preferably, the plugging direction of the plug pin is vertical to the moving direction of the lock rod; the latch pin is provided with a first groove, and the lock rod is provided with a second groove: when the lock rod is positioned at the locking position, the first groove is positioned in a part where the bolt is inserted, the first groove and the second groove are staggered, and the lock rod is partially embedded into the first groove; when the locking bar is in the unlocked position, the second groove is aligned with the first groove and the latch is able to move through the second groove to thereby engage or disengage with the component it is inserted into.

Preferably, a part in which the bolt is inserted is provided with a bolt jack, the bottom of the bolt jack forms a bolt in-place structure, the bolt is slidably jointed with the bolt jack, and one end of the bolt, which is used for being jointed with the bolt jack, is provided with a front end guide structure; a lock rod jack is arranged in a part where the bolt is inserted, the extension direction of the lock rod jack is vertical to the extension direction of the bolt jack, the hole bottom of the lock rod jack forms a lock rod in-place structure, and the lock rod is slidably jointed with the lock rod jack; when the bolt abuts against the bolt in-place structure, the lock rod can move between an unlocking position and a locking position; when the locking rod is abutted against the locking rod in-place structure, the locking rod is located at the unlocking position.

Preferably, a spring is also included; the spring is elastically supported between the key and the part inserted by the bolt; when the lock rod is positioned at the locking position, the spring is in a natural state; the spring stores the force in the process that the lock rod moves from the locking position to the unlocking position; the other end of the bolt is configured into a cylinder with an annular first groove; the second groove is an arc-shaped groove, and the radius of the arc-shaped groove is larger than that of the cylinder with the annular first groove.

The invention has the beneficial effects that:

the split medical endoscope comprises a split type medical endoscope body, a light guide part and a light gathering part, wherein the split type medical endoscope body is provided with the split type medical endoscope body, the split type medical endoscope body is provided with the light gathering part, the light gathering part is arranged on the split type medical endoscope body, the light guide part is arranged on the split type medical endoscope body, the light gathering part is arranged on the split type medical endoscope body, the light guide part is provided with a light guide part, the light guide area of the light guide part of the split type medical endoscope body can be increased, light is focused by the light gathering part and then is transmitted to the far-side glass optical fiber bundle, and the light gathering part does not need to be the same as the light guide area of the light guide part of the split type medical endoscope body due to the light gathering part, namely, the size of the light gathering part can be reduced relative to the light guide part of the split type medical endoscope body, the light guide part is arranged on the far-side glass optical fiber bundle, and the light guide part is arranged on the far-side glass optical fiber bundle, so that the light guide part is arranged on the split type medical endoscope body, and the light guide part, so that the light guide part is arranged on the light guide part, and the near-side glass optical fiber bundle body, and the light guide part, so that the light guide part is arranged on the light guide part, and the split type medical endoscope body, so that the light guide part, so that the split type endoscope body, and the light guide area can be arranged on the light guide part can be reduced, and the light guide part, and the split type medical endoscope body, and the light guide part can be reduced, and the split type endoscope body, and can be reduced, and the light guide part, and the split type endoscope body, and the light guide part can be reduced, and can be arranged on the near-side glass optical fiber bundle, and can be arranged on the split type medical endoscope body, and can be arranged on the split type endoscope body, and can be arranged on.

In addition, the split medical endoscope is simple in structure operation, and a doctor only needs to drive the key and insert or pull out one of the far-side core body and the near-side core body at the same time.

Drawings

Fig. 1 is a front view schematically illustrating a split medical endoscope provided in a first embodiment;

FIG. 2 is a schematic partial cross-sectional view of the split medical endoscope of FIG. 1;

FIG. 3 is a schematic view, partially in section, at angle A of the split-type medical endoscope of FIG. 1;

FIG. 4 is a schematic partial cross-sectional view at angle B of the split-type medical endoscope of FIG. 1;

FIG. 5 is a schematic partial sectional view of a split-type medical endoscope provided in the following second embodiment;

fig. 6 is a partially sectional schematic view of a split type medical endoscope provided in the following third embodiment;

fig. 7 is a partially sectional schematic view of a split medical endoscope provided in the following fourth embodiment.

[ reference numerals ]

1: a proximal glass fiber bundle; 11: a light source end; 12: a light guide section; 13: an ejection end; 14: a light-condensing section; 15: a light source connection part; 16: a first end portion; 17: a second end portion; 18: a second metal sleeve;

2: a proximal core; 21: a first mounting hole; 22: a first metal connection pipe;

3: a distal core; 31: a second mounting hole; 32: a second metal connecting pipe; 33: a bolt in-place structure; 34: a locking bar in-place structure; 35: a plug pin jack; 36: a lock rod jack;

4: a distal glass fiber bundle; 41: a receiving section; 42: a third metal sleeve; a: the imaginary external vertebral body;

5: a proximal housing;

6: a distal housing.

7: a bolt; 71: a first groove; 72: front end guide structure

8: pressing a key;

9: a lock lever; 91: a second groove;

10: a spring.

Detailed Description

For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.

Example one

Referring to fig. 1 to 4, the present embodiment provides a split medical endoscope including a proximal glassoptical fiber bundle 1, aproximal core 2, adistal core 3, a distal glassoptical fiber bundle 4, a proximal housing 5, a distal housing 6, alatch 7, a key 8, alock lever 9, and a spring 10.

Theproximal core 2 is fixed within the proximal housing 5. Thedistal core 3 is fixed within the distal housing 6. Theproximal core 2 and thedistal core 3 are detachably connected. Thereby, the proximal housing 5 and the distal housing 6 and the proximal portion and the distal portion are detachably connected.

One end of the proximalglass fiber bundle 1 is attached to theproximal core 2. The proximalglass fiber bundle 1 includes a plurality of proximal glass fibers arranged in a bundle, for example, 6000 and 8000 glass fibers having a diameter of 38 μm are bundled. Each near side glass fiber comprises alight source end 11, alight guide section 12 and an emittingend 13 which are connected in sequence, thelight source end 11 is connected with a light source to receive light, and thelight guide section 12 conducts the light of the light source in the near side glass fiber until the light is conducted to the emittingend 13. Here, the light source ends 11 of all the near-side glass optical fibers are formed into an integral lightsource connecting portion 15 by heat fusion, and the lightsource connecting portion 15 is configured in a structure of being connected to the light source in a plug-in manner, whereby the lightsource connecting portion 15 for being connected to the light source transmits the light from the light source to the respectivelight guide sections 12 of all the near-side glass optical fibers. Thelight guide sections 12 of the plurality of near side glass optical fibers are gathered to form the light guide part of the near side glass optical fiber bundle. Theoutgoing ends 13 of all the near side glass optical fibers form an integral light-gatheringpart 14 through hot melting, and the light-gathering part 14 is configured to focus light transmitted from thelight guide sections 12 of all the near side glass optical fibers and then emit the light. Therefore, the light guide area of the near-side glass optical fiber bundle light conducting part can be increased through the arrangement form of the integratedlight condensing part 14, and meanwhile, thelight condensing part 14 does not need the light guide area which is the same as that of the near-side glass optical fiber bundle light conducting part due to the light condensing effect, namely, the size of thelight condensing part 14 can be reduced relative to that of the near-side glass optical fiber bundle light conducting part, so that the size limitation of the endoscope is overcome, the light guide rate is improved, the front-end illumination effect of the endoscope is improved, and the imaging effect is improved. For example, if the existing installation structure allows the installed near-side glass fiber bundle to have a diameter of 4mm, only 5000 and 6000 optical fibers of 38 μm can be used to form the near-side glass fiber bundle, and the diameter of the light guide area is less than 4mm because there are gaps between the optical fibers. And can use more optic fibre now to make the diameter of leading the light part reach 5mm, the use of more optic fibre has increased leaded light area, can install in current endoscope and assemble light through the spotlight portion that the diameter is 4mm again and send out.

In the present embodiment, the projections of the lightsource connecting portion 15 and thelight condensing portion 14 are located within the projection range of thelight guiding section 12 of the plurality of proximal glass optical fibers in the projection of the plane perpendicular to the center line of the proximal glass optical fiber bundle, thereby ensuring an increase in light guiding area while fitting within the allowable size range of the proximal glass optical fiber bundle mounting structure.

In this embodiment, thelight collection portion 14 includes opposite first andsecond ends 16 and 17, thefirst end 16 being connected to thelight guide section 12 of the plurality of proximal glass optical fibers, and thesecond end 17 being distal from thelight guide section 12. In the present embodiment, the light-condensing portion 14 is composed of a cylindrical body including afirst end portion 16 and asecond end portion 17, and an end surface of thesecond end portion 17 is configured as a spherical surface. It will be appreciated that thesecond end 17 here may not be a full sphere, but a partial sphere as shown, which is capable of concentrating light.

In the present embodiment, the lightsource connecting portion 15 is a cylindrical body as a whole. The diameter of the lightsource connecting part 15 is 3mm-4mm, and the diameter of the light guide part is 4mm-5 mm. The diameter of the cylinder of the light-condensingportion 14 is 3mm to 4 mm. It is inevitable that the diameter of the cylinder of the lightsource connecting portion 15 and the diameter of the cylinder of thelight converging portion 14 are both smaller than the diameter of thelight conducting section 12 of the plurality of light conducting bodies.

In the present embodiment, the proximal glassoptical fiber bundle 1 includes a first metal sheath (not shown in the figure), a hose (not shown in the figure), and asecond metal sheath 18. The first metal sleeve wraps the lightsource connecting part 15, the hose wraps thelight guide section 12, and thesecond metal sleeve 18 wraps thelight focusing part 14. The first metal sleeve, the hose and thesecond metal sleeve 18 are connected in sequence. The first metal sleeve and the lightsource connecting part 15 and thelight gathering part 14 and thesecond metal sleeve 18 are connected in a bonding mode, and the outer peripheral surface of thesecond metal sleeve 18 is provided with threads.

In the present embodiment, a first mountinghole 21 is provided in theproximal core 2, a firstmetal connecting tube 22 is fixed in the first mountinghole 21 by means of bonding, screwing or the like, and an end surface of the firstmetal connecting tube 22 near thedistal core 3 is flush with an edge of the first mountinghole 21 on the side. Further, thesecond metal sleeve 18 is sleeved with the firstmetal connecting tube 22, and one end of thesecond metal sleeve 18 close to the distal core 3 (i.e. close to the distal glass fiber bundle 4) is retracted relative to the first mountinghole 21, and the purpose of this retraction is to form a space for inserting the distalglass fiber bundle 4 and the sleeve outside thereof.

In the present embodiment, the first mountinghole 21 is a circular hole with an equal diameter, the firstmetal connecting pipe 22 is a circular pipe with an equal outer diameter and an equal wall thickness, and thesecond metal sleeve 18 is a circular pipe with an equal outer diameter and an equal wall thickness. The inner wall of the firstmetal connecting pipe 22 is provided with internal threads, and the firstmetal connecting pipe 22 is in threaded connection with thesecond metal sleeve 18. Of course, in other embodiments, the firstmetal connecting tube 22 and thesecond metal sleeve 18 can be fixed by adhesion.

One end of the distalglass fiber bundle 4 is mounted to thedistal core 3. The distalglass fiber bundle 4 comprises a plurality of distal glass fibers, for example 3000-4000 glass fibers with a diameter of 38 μm. One end of each far-side glass fiber is formed into an integrated receivingpart 41 through heat fusion, and the other end of each far-side glass fiber is divided into a plurality of strands of illuminating structures which respectively extend to the front ends of the far-side parts, wherein two strands are taken as an example in the drawing, and each strand of far-side glass fiber is also heat fused into an integrated emitter before being connected with the illuminating structures.

In the present embodiment, the light-condensingportion 14 and the receivingportion 41 are cooperatively configured as: when thedistal core 3 and theproximal core 2 are connected, thelight condensing portion 14 focuses the light transmitted from thelight guiding section 12 to the receivingportion 41. In the case where the end surface of the second end of thelight converging portion 14 is a curved surface in the present embodiment, thesecond end 17 of thelight converging portion 14 is spaced apart from the receivingportion 41, and the diameter of the receivingportion 41 is equal to or smaller than the diameter of the small end of the imaginary external vertebral body a of the spherical surface, so that the receivingportion 41 receives all the light emitted from thelight converging portion 14 as much as possible, especially when the diameter of the receivingportion 41 is smaller than the diameter of the small end of the imaginary external vertebral body a, even when there is an assembly error between thedistal core 3 and theproximal core 2.

In the present embodiment, the second mountinghole 31 is provided in theproximal core 2, the distal glassoptical fiber bundle 4 includes athird metal sheath 42 wrapping the receivingportion 41, the receivingportion 41 is bonded to thethird metal sheath 42, and end faces of the receivingportion 41 and thethird metal sheath 42 near one end of the proximal glassoptical fiber bundle 1 are flush. The secondmetal connecting tube 32 is fixed in the second mountinghole 31 by screwing or bonding, thethird metal sleeve 42 is sleeved with the secondmetal connecting tube 32 and the end faces of the two close to the near-side glass optical fiber bundle are flush, and therefore, the receivingportion 41, thethird metal sleeve 42 and the end of the secondmetal connecting tube 32 close to the near-side glassoptical fiber bundle 1 form a plug. The plug is inserted into the first mountinghole 21 and abuts against thesecond metal shell 18. When the secondmetal connecting tube 32 abuts thesecond metal sleeve 18, the distance between the light-gathering portion and the receiving portion happens to be appropriate.

In the present embodiment, the second mountinghole 31 is a stepped hole. The outer wall of the secondmetal connecting pipe 32 is matched with the second mountinghole 31 to form a step shape, a step hole is formed in the secondmetal connecting pipe 32, and the outer wall of thethird metal sleeve 42 is matched with the step hole in the secondmetal connecting pipe 32 to form a step shape. Therefore, when the far-side glassoptical fiber bundle 4 and the secondmetal connecting pipe 32 are mounted to the second mountinghole 31, the axial position is accurately fixed, and the distance between the light-gathering part and the receiving part is ensured to be proper when the secondmetal connecting pipe 32 abuts against thesecond metal sleeve 18.

Further, one end of theplug pin 7 is configured as a cylinder having an external thread for screwing with a hole having an internal thread in theproximal core 2, thereby fixing theplug pin 7 to theproximal core 2, both moving synchronously. The other end of thebolt 7 is also configured as a cylinder with an annularfirst groove 71 and a front end with afront end guide 72. Wherein the diameter of the cylinder with thefirst groove 71 in theplug pin 7 is larger than the diameter of the cylinder with the external thread.

Cooperatively, alatch insertion hole 35 is provided in thedistal core 3, and a bottom of thelatch insertion hole 35 constitutes a latch-in-place structure 33. The cylinder of theplug 7 having thefirst groove 71 is slidably engaged with theplug insertion hole 35, and when the front end of the cylinder of theplug 7 having thefirst groove 71 abuts on the plug-in-place structure 33, theplug 7 is in place and theproximal core 2 and thedistal core 3 abut. The frontend guide structure 72 provides a guide function during insertion of theplug pin 7 into the plugpin insertion hole 35. In this embodiment, the frontend guide structure 72 is a cylinder with a bevel cut at the front end, but in other embodiments, the frontend guide structure 72 may also be a conical surface.

Thus, one end of theplug 7 is fixed to theproximal core 2, and the other end of theplug 7 is insertably inserted into thedistal core 3. Of course, the invention is not limited to this, and in other embodiments, theplug 7 may also be fixed to thedistal core 3 for pluggable engagement with theproximal core 2.

It should be noted that the "one end" and the "other end" of theplug 7 refer to the portions of theplug 7 that are engaged with thedistal core 3 and theproximal core 2, and as can be seen from fig. 3, in this embodiment, theplug 7 is divided into two portions that are respectively engaged with thedistal core 3 and theproximal core 2, so that the "one end" and the "other end" of theplug 7 are the two portions. If in other embodiments thedistal core 3 and theproximal core 2 do not abut after thelatch 7 is in place, there may be a third portion between the "one end" and the "other end" of thelatch 7, i.e. the portion that does not engage with either thedistal core 3 or theproximal core 2.

It should be noted that the above "slidably engaged" means that the inner walls of theplug pin 7 and the plugpin insertion hole 35 are in contact without affecting smooth insertion and extraction of the two, thereby ensuring the mounting accuracy of thedistal core 3 and theproximal core 2, and further ensuring the mounting accuracy of the distal portion and the proximal portion.

The keys 8 are located outside the distal housing 6 and the proximal housing 5.

One end of thelock lever 9 is fixed with the key 8.

The other end of thelock lever 9 is movably inserted in a member in which theplug pin 7 is inserted (i.e., thedistal core 3 in the present embodiment). Specifically, a locklever insertion hole 36 is provided in a part (i.e., thedistal core 3 in the present embodiment) into which theplug pin 7 is inserted, and a hole bottom of the locklever insertion hole 36 constitutes a locklever seating structure 34, and the above-mentioned "other end of thelock lever 9" is slidably engaged with the locklever insertion hole 36. It should be noted that "slidably engage" here means that the inner walls of thelock lever 9 and the locklever insertion hole 36 are in contact, but such contact does not affect smooth insertion and extraction of thelock lever 9 and the locklever insertion hole 36, thereby ensuring smooth locking and unlocking (described in detail later) between thelock lever 9 and theplug pin 7.

It should be noted that "one end" and "the other end" of thelock lever 9 refer to a portion of thelock lever 9 that cooperates with the member (i.e., thedistal core 3 in the present embodiment) into which the key 8 and theplug 7 are inserted, and as can be seen from fig. 3, in the present embodiment, theplug 7 is divided into three portions, a first portion that cooperates with the member (i.e., thedistal core 3 in the present embodiment) into which theplug 7 is inserted, a second portion that cooperates with the member (i.e., thedistal core 3 in the present embodiment) into which theplug 7 is inserted, and a third portion that is located between the first portion and the second portion and does not cooperate with the key 8 and the member (i.e., thedistal core 3 in the present embodiment) into which theplug 7 is inserted.

Further, the extending direction of the locklever insertion hole 36 is perpendicular to the extending direction of theplug insertion hole 35, whereby the inserting and extracting direction of theplug 7 is perpendicular to the moving direction of thelock lever 9.

The lockingbar 9 has asecond groove 91, thesecond groove 91 is an arc-shaped groove, and the radius of the arc-shaped groove is larger than the radius of the cylinder inserted into thedistal core 3 in theplug pin 7.

The spring 10 is elastically supported between the key 8 and the part in which theplug 7 is inserted (i.e., thedistal core 3 in this embodiment). In the present embodiment, two springs 10 are provided.

As can be seen from the figure, fourlatches 7 are arranged in a rectangular shape in the present embodiment, and twolock levers 9 are arranged corresponding to the twolatches 7, respectively, i.e. onelock lever 9 is engaged with twolatches 7 located at one side of the fourlatches 7, and theother lock lever 9 is engaged with twolatches 7 located at the other side of the fourlatches 7, whereby twosecond grooves 91 are provided on eachlock lever 9 for engaging with thefirst grooves 71 of the corresponding twolatches 7.

The lockingbar 9 is movable along the first groove when thebolt 7 abuts the bolt-in-place feature 33, and thus between an unlocked position and a locked position.

When thelock lever 9 is in the lock position, thefirst groove 71 is located in the member (i.e., thedistal core 3 in the present embodiment) into which theplug 7 is inserted and is displaced from thesecond groove 91, and thelock lever 9 is partially inserted into thefirst groove 71, whereby theplug 7 is restricted from moving by thelock lever 9 inserted into thefirst groove 71 thereof. And at this time, the spring 10 is in a natural state.

The button 8 is pressed by the doctor, and the lockingrod 9 moves towards the locking rod-in-place structure 34. When thelock lever 9 abuts the lock lever inposition structure 34, thelock lever 9 is in the unlocked position, thesecond groove 91 is aligned with thefirst groove 71, and thelatch 7 can move through thesecond groove 91 to thereby disengage from the component it is inserted (i.e., thedistal core 3 in this embodiment). At this time, the distal core and the proximal core are separated, that is, the distal portion and the proximal portion of the split medical endoscope are separated. Wherein the spring 10 accumulates force during the movement of thelock lever 9 from the locking position to the unlocking position.

After the external pressing force on the key 8 disappears, the external force provided by thespring part 13 drives the lockingrod 9 to move towards the direction away from the locking rod in-place structure 34, and the lockingrod 9 moves from the unlocking position to the locking position.

If a new distal portion is to be inserted, the button 8 is pressed by the surgeon and the lockingbar 9 moves toward the locking bar-in-place structure 34, and the spring 10 accumulates force. With the lockinglever 9 abutting the locking lever inposition 34, the lockinglever 9 is in the unlocked position, theplug 7 is inserted into the plug-in socket and until theplug 7 abuts the plug-in position, during which theplug 7 moves through thesecond groove 91 to engage with the component it is inserted into (i.e. in this embodiment the distal core 3). Then the doctor releases the pressing, the spring 10 drives the key 8 to drive thelock rod 9 to move along the first groove, and thesecond groove 91 is staggered with thefirst groove 71.

Thereby, thedistal core 3 and theproximal core 2 are detachably connected.

In summary, the split medical endoscope of the embodiment detachably connects thedistal core 3 and theproximal core 2 through theplug 7, locks theplug 7 through thelock rod 9 to further lock the connection between thedistal core 3 and theproximal core 2, and the key 8 can drive thelock rod 9 to move between a lock position for preventing theplug 7 from being inserted and pulled and an unlock position for allowing theplug 7 to be inserted and pulled under the action of external force. This structure easy operation only needs the doctor to drive one indistal core 3 and thenear side core 2 of plug when button 8 can. Therefore, one-key plugging can be realized by the structural design, and further, force, light and electricity lossless conduction can be realized.

Meanwhile, the mortise lock structure in the embodiment is high in precision, and can ensure that thelight condensing part 14 of the near-side glass optical fiber bundle is aligned with the receiving part of the far-side glass optical fiber bundle when the far-side core body is connected with the near-side core body, so that higher light guide rate is ensured.

Example two

Referring to fig. 5, the second embodiment is different from the first embodiment in that the shape of the light-condensing portion is different.

Specifically, the light-gatheringportion 14 of this embodiment is composed of a cylinder and a circular truncated cone connected to the cylinder, one end of the cylinder, which is far away from the circular truncated cone, serves as afirst end portion 16, a large end of the circular truncated cone is connected to the cylinder, and a small end face of the circular truncated cone is an end face of thesecond end portion 17. At this time, the diameter of thefirst end 16 of the light-condensing portion 14 (i.e., the diameter of the cylinder and the maximum diameter of the truncated cone) is 4 to 5mm, and the diameter of thesecond end 17 of the light-condensing portion 14 (i.e., the minimum diameter of the truncated cone) is 3 to 4 mm. Of course, the present invention is not limited to this, and thelight condensing unit 14 may be integrally formed as a circular truncated cone.

In this embodiment, the end surface of thesecond end 17 of the light-gatheringportion 14 is flush with the outer end surface of thesecond metal sleeve 18, and the inner wall of thesecond metal sleeve 18 is matched with the light-gatheringportion 14 in shape, that is, when the light-gatheringportion 14 is a cylinder and a circular table, the inner wall of thesecond metal sleeve 18 is a cylindrical surface and a circular table. The first mountinghole 21 is a circular hole with an equal diameter, and the firstmetal connecting pipe 22 is a circular pipe with an equal outer diameter and an equal wall thickness. The outer wall of thesecond metal sleeve 18 is matched to the inner wall of the firstmetal connecting tube 22.

When theproximal core 2 and thedistal core 3 are connected, thelight converging portion 14 is coaxial with the receivingportion 41 and thesecond end 17 of thelight converging portion 14 abuts against the receivingportion 41. At this time, thethird metal sleeve 42 and the secondmetal connecting pipe 32 abut against thesecond metal sleeve 18, and the diameter of the receivingportion 41 is smaller than the diameter of the second end portion of the light-condensing portion 14 (preferably, the difference between the diameter of the receivingportion 41 and the diameter of the second end portion of the light-condensingportion 14 is a mounting error), so that thesecond end portion 17 of the light-condensingportion 14 abuts against the receivingportion 41 and the light-condensingportion 14 is coaxial with the receivingportion 41.

Connecting the light-gathering portion and the first mounting hole using thesecond metal sleeve 18 and the first metal connecting tube as in the first and second embodiments, and connecting the receiving portion and the second mounting hole using thethird metal sleeve 42 and the secondmetal connecting tube 32 are advantageous in making each of thefirst light beam 1 and the secondlight beam 4 an independent product and facilitating mounting and dismounting with theproximal core 2 and thedistal core 3.

EXAMPLE III

Referring to fig. 6, the present embodiment is different from the first embodiment in that the first metal connection tube and the second metal connection tube are removed, thesecond metal sleeve 18 is directly sleeved on thefirst installation hole 21, thethird metal sleeve 42 is directly sleeved on thesecond installation hole 31, and one end of thesecond metal sleeve 18 close to the near-side glassoptical fiber bundle 1 is inserted into thefirst installation hole 21 and abuts against thesecond metal sleeve 18.

Preferably, this "nesting" is achieved by a threaded connection or an adhesive.

Example four

Referring to fig. 7, the present embodiment is different from the second embodiment in that the first metal connecting pipe and the second metal connecting pipe are removed, thesecond metal sleeve 18 is directly sleeved on the first mountinghole 21, and thethird metal sleeve 42 is directly sleeved on the second mountinghole 31. Preferably, this "nesting" is achieved by a threaded connection or an adhesive.

At this time, the outer wall of thesecond metal sleeve 18 is matched with the inner wall of the first mountinghole 21 in shape, and the outer wall of thethird metal sleeve 42 is matched with the second mountinghole 31 to form a step shape.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.

Claims (10)

1. A split medical endoscope comprising a proximal core (2), a distal core (3), a proximal glass fiber bundle (1) and a distal glass fiber bundle (4), the distal core (3) and the proximal core (2) being detachably connected, the proximal glass fiber bundle (1) being mounted in the proximal core (2), the distal glass fiber bundle (4) being mounted in the distal core (3),

the near side glass fiber bundle (1) comprises a plurality of near side glass fibers which are arranged in a bundle, the near side glass fibers comprise a light source end (11), a light guide section (12) and an ejection end (13) which are sequentially connected, and the ejection ends (13) of all the near side glass fibers are fused into an integral light gathering part (14);

the far-side glass optical fiber bundle (4) comprises a plurality of far-side glass optical fibers, and one ends of all the far-side glass optical fibers are thermally fused to form an integral receiving part (41);

the light-condensing portion (14) and the receiving portion (41) are configured to: when the distal core (3) and the proximal core (2) are connected, the light-focusing portion (14) focuses light transmitted from the light-guiding sections (12) of all proximal glass optical fibers to the receiving portion (41).

2. The split-type medical endoscope of claim 1,

the light source ends (11) of all the near side glass optical fibers are fused into a whole light source connecting part (15);

the projection of the light source connecting part (15) and the light-gathering part (14) is positioned in the projection range of the light guide sections (12) of all the near side glass optical fibers in the projection of a plane perpendicular to the central line of the near side glass optical fiber bundle (1).

3. The split-type medical endoscope of claim 2,

the light-gathering part (14) comprises a first end part (16) connected with the light-guiding sections (12) of all the near side glass optical fibers and a second end part (17) far away from the light-guiding sections (12);

the light-condensing portion (14) has two structures:

the structure I is as follows: the light-gathering part (14) comprises a circular truncated cone, and the end surface of the small end of the circular truncated cone forms the end surface of the second part (17);

the structure II is as follows: the end face of the second end (17) of the light-collecting section (14) is configured as a spherical surface.

4. The split-type medical endoscope of claim 3,

the light guide sections (12) of the plurality of proximal glass optical fibers are gathered to form a light guide part of the proximal glass optical fiber bundle;

the diameter of the light source connecting part (15) is 3-4mm, and the diameter of the light guide part is 4-5 mm;

when the light-gathering part (14) comprises a circular table, the diameter of the first end part (16) of the light-gathering part (14) is 4-5mm, and the diameter of the second end part (17) of the light-gathering part (14) is 3-4 mm;

when the end face of the second end part (17) of the light-gathering part (14) is constructed as a spherical surface, the rest part of the light-gathering part (14) except the second end part (17) is a cylinder, and the diameter of the cylinder is 3-4 mm;

the diameter of the receiving part (41) is 3mm-4 mm.

5. The split-type medical endoscope of claim 3,

the near-side glass optical fiber bundle (1) comprises a first metal sleeve, a hose and a second metal sleeve (18) which are sequentially connected, the first metal sleeve wraps the light source connecting part (15), the hose wraps the light guide section (12), and the second metal sleeve (18) wraps the light gathering part (14);

a first mounting hole (21) is formed in the near-side core body (2), the second metal sleeve (18) is directly sleeved with the first mounting hole (21), or the second metal sleeve (18) is sleeved with a first metal connecting pipe (22) in the first mounting hole (21), and one end, close to the far-side glass optical fiber bundle (4), of the second metal sleeve (18) is retracted relative to the first mounting hole (21);

the far-side glass optical fiber bundle (4) comprises a third metal sleeve (42) wrapping the receiving part (41), and the end faces of the receiving part (41) and the third metal sleeve (42) close to one end face of the near-side glass optical fiber bundle (1) are flush;

a second mounting hole (31) is formed in the far-side core body (3), the third metal sleeve (42) is directly sleeved with the second mounting hole (31), one end, close to the near-side glass optical fiber bundle (1), of the third metal sleeve (42) is inserted into the first mounting hole (21) to be abutted against the second metal sleeve (18), or the third metal sleeve (42) is sleeved with a second metal connecting pipe (32) in the second mounting hole (31), one ends, close to the near-side glass optical fiber bundle (1), of the third metal sleeve (42) and the second metal connecting pipe (32) are inserted into the first mounting hole (21) to be abutted against the second metal sleeve (18);

when the light-gathering portion (14) comprises the circular truncated cone, the light-gathering portion (14) is coaxial with the receiving portion (41), a second end portion (17) of the light-gathering portion (14) is abutted against the receiving portion (41), and the diameter of the receiving portion (41) is smaller than or equal to that of the second end portion (17);

when the second end portion (17) of the light-gathering portion (14) is configured as a spherical surface, the second end portion (17) of the light-gathering portion (14) is spaced apart from the receiving portion (41), and the diameter of the receiving portion (41) is equal to or less than the diameter of the small end of an imaginary external vertebral body (A) of the spherical surface.

6. The split-type medical endoscope of claim 5,

the first metal sleeve is bonded with the light source connecting part (15);

the light-gathering part (14) is bonded with the second metal sleeve (18);

the receiving part (41) is bonded with the third metal sleeve (42);

the sleeve joint adopts threaded connection or bonding;

the light-condensing portion (14) includes, in the case of the circular truncated cone:

the end face of the second end part (17) of the light-gathering part (14) is flush with the outer end face of the second metal sleeve (18), and the inner wall of the second metal sleeve (18) is matched with the light-gathering part (14) in shape;

under the condition that the second metal sleeve (18) is directly sleeved with the first mounting hole (21), the outer wall of the second metal sleeve (18) is matched with the inner wall of the first mounting hole (21) in shape, and the first mounting hole (21) is a circular hole with the same diameter;

under the condition that the second metal sleeve (18) is sleeved with the first metal connecting pipe (22), the first mounting hole (21) is a circular hole with equal diameter, the first metal connecting pipe (22) is a circular pipe with equal outer diameter and equal wall thickness, and the outer wall of the second metal sleeve (18) is matched with the inner wall of the first metal connecting pipe (22) in shape;

in the case where the second end portion (17) of the light-condensing portion (14) is configured as a spherical surface:

the second metal sleeve (18) is a circular pipe with the same outer diameter and the same wall thickness;

under the condition that the second metal sleeve (18) is directly sleeved with the first mounting hole (21), the first mounting hole (21) is a circular hole with the same diameter;

under the condition that the second metal sleeve (18) is sleeved with the first metal connecting pipe (22), the first mounting hole (21) is a circular hole with the same diameter, and the first metal connecting pipe (22) is a circular pipe with the same outer diameter and the same wall thickness;

the second mounting hole (31) is a stepped hole;

under the condition that the third metal sleeve (42) is directly sleeved with the second mounting hole (31), the outer wall of the third metal sleeve (42) is matched with the second mounting hole (31) to form a step shape;

under the condition that the second metal sleeve (18) is sleeved with the second metal connecting pipe (32), the outer wall of the second metal connecting pipe (32) is matched with the second mounting hole (31) to form a step shape, a step hole is formed in the second metal connecting pipe (32), and the outer wall of the third metal sleeve (42) is matched with the step hole in the second metal connecting pipe (32) to form a step shape.

7. The split-type medical endoscope of claim 1, further comprising a latch (7), a button (8) and a lock lever (9);

one end of the plug pin (7) is fixed to one of the far-side core body (3) and the near-side core body (2), and the other end of the plug pin (7) is inserted in the other of the far-side core body (3) and the near-side core body (2) in a pluggable manner;

one end of the lock rod (9) is fixed on the key (8), and the other end of the lock rod (9) is movably inserted into a part where the bolt (7) is inserted;

the button (8) can drive the lock rod (9) to move between a locking position for preventing the plug pin (7) from being plugged and an unlocking position for allowing the plug pin (7) to be plugged under the action of external force.

8. The split-type medical endoscope of claim 7,

the plugging direction of the plug pin (7) is vertical to the moving direction of the lock rod (9);

the bolt (7) is provided with a first groove (71), and the lock rod (9) is provided with a second groove (91):

when the lock rod (9) is located at the locking position, the first groove (71) is located in a part where the bolt (7) is inserted, the first groove (71) and the second groove (91) are staggered, and the lock rod (9) is partially embedded into the first groove (71);

when the lock rod (9) is in the unlocking position, the second groove (91) is aligned with the first groove (71), and the plug pin (7) can move through the second groove (91) to be further engaged with or disengaged from an inserted component.

9. The split-type medical endoscope of claim 8,

a plug pin jack (35) is arranged in a part where the plug pin (7) is inserted, the bottom of the plug pin jack (35) forms a plug pin in-place structure (33), the plug pin (7) is slidably jointed with the plug pin jack (35), and one end of the plug pin (7) used for being jointed with the plug pin jack (35) is provided with a front end guide structure (72);

a lock rod jack (36) is arranged in a part where the bolt (7) is inserted, the extending direction of the lock rod jack (36) is vertical to the extending direction of the bolt jack (35), the hole bottom of the lock rod jack (36) forms a lock rod in-place structure (34), and the lock rod (9) is slidably jointed with the lock rod jack (36);

when the bolt (7) abuts against the bolt-in-place structure (33), the lock rod (9) can move between the unlocking position and the locking position;

when the locking rod (9) is abutted against the locking rod in-place structure (34), the locking rod (9) is located at the unlocking position.

10. The split medical endoscope according to claim 8, further comprising a spring (10);

the spring (10) is elastically supported between the key (8) and a part inserted by the bolt (7);

when the lock rod (9) is located at the locking position, the spring (10) is in a natural state;

the spring (10) accumulates force during the process that the lock rod (9) moves from the locking position to the unlocking position;

the other end of the plug pin (7) is configured as a cylinder with the first groove (71) in a ring shape;

the second groove (91) is an arc-shaped groove, and the radius of the arc-shaped groove is larger than that of the cylinder with the annular first groove (71).

Images