CN110584574B - Endoscope operation portion suction structure and endoscope - Google Patents
Endoscope operation portion suction structure and endoscope Download PDFInfo
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- CN110584574B CN110584574B CN201910883819.XA CN201910883819A CN110584574B CN 110584574 B CN110584574 B CN 110584574B CN 201910883819 A CN201910883819 A CN 201910883819A CN 110584574 B CN110584574 B CN 110584574B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00131—Accessories for endoscopes
- A61B1/00133—Drive units for endoscopic tools inserted through or with the endoscope
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/012—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor
- A61B1/015—Control of fluid supply or evacuation
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Abstract
The invention discloses an endoscope operation part suction structure and an endoscope, wherein the operation part suction structure comprises a suction valve core and a suction cavity, and the suction cavity is provided with a suction interface and a negative pressure interface; the suction cavity is provided with a main pipe section, and the suction valve core is rotatably connected with the main pipe section in a sealing fit manner to form a two-position three-way rotary valve structure with the suction cavity; the suction valve core is limited by the rotation limiting structure to rotate within a set angle range; so that the negative pressure interface is respectively communicated with the suction interface and the outside at two angle limit positions. Preferably, the suction valve core is connected with a torsion spring and a suction top cap for pulling the valve core. The endoscope has the operation section suction structure. The invention has the advantages of compact layout of the suction structure of the operation part, convenient operation and long service life. The endoscope has the operation part structure, and is good in controllability and reliable in function.
Description
Technical Field
The invention relates to the technical field related to electronic endoscopes, in particular to an endoscope operation part suction structure and an endoscope.
Background
The suction button on the endoscope operation part is mainly used for controlling the suction function of the head end, and realizes the switching of suction or non-suction of liquid, debris or gas in the body of a patient.
The existing suction button structure of a partial endoscope is disclosed in the patent application No. US08577321, and the air in the air flows to the suction pump through the suction button hole channel in the natural state, when the suction button is pressed, the channel between the inside of the suction button and the outer space of the endoscope body is isolated, and the channel between the suction pump and the head end is opened, so as to realize the suction effect, and can be used for removing the liquid, the debris or the air in the patient body.
However, the structure described in patent US08577321 is a press type mechanical structure, the suction valve core has a stroke along the axial direction, the rebound of the suction valve core is realized by a spring, and for an operator with a small palm, when the suction valve core is in a rebound state, the suction top cap is higher in height and inconvenient to press, so that it is important to reduce the height of the suction top cap in a natural state. For this reason, further improvement is required.
Disclosure of Invention
The first purpose of the present invention is to provide an operation portion suction structure of an endoscope, which is configured to have a two-position three-way rotary valve structure by a suction valve core and a suction cavity, and which can be operated conveniently regardless of the size of the palm of the operator by simply rotating the valve core, in order to overcome the disadvantage of inconvenience in operation due to the pressing operation of the operation portion suction structure of the existing endoscope. A second object of the present invention is to provide an endoscope having the above-described operation portion suction structure.
In order to realize the first purpose, the invention adopts the following technical scheme:
an endoscope operation part suction structure comprises a suction valve core and a suction cavity, wherein a suction interface and a negative pressure interface are arranged on the suction cavity; the suction cavity is provided with a main pipe section, and the suction valve core is rotatably connected with the main pipe section in a sealing fit manner to form a two-position three-way rotary valve structure with the suction cavity; the suction valve core is limited by a rotation limiting structure to rotate within a set angle range; so that the negative pressure interface is respectively communicated with the suction interface and the outside at two angle limit positions.
According to the invention adopting the technical scheme, the two-position three-way rotary valve structure is formed by the suction valve core and the suction cavity, and when the states of suction and non-suction are required to be switched when a patient is subjected to endoscopic surgery, the two-position three-way rotary valve structure can be realized by only rotating the valve core. The rotation amplitude and the control component stroke are smaller than those of a pressing operation mode, and the operation difficulty is avoided for an operator with a small palm. Therefore, the operation can be conveniently carried out no matter the size of the palm of the operator.
Preferably, a torsion spring is connected to the suction valve core. The automatic reset is realized under the torsion action of the torsion spring, and the free state is set to be a non-attraction state, so that when attraction is needed, the external force continuously acts to overcome the torsion of the torsion spring so as to keep the attraction state.
Preferably, the suction cavity is fixedly connected with a suction valve cap with a tubular structure through the upper end of the main pipe section, the suction valve cap comprises a metal framework, and the middle of a pipe hole of the metal framework is provided with a baffle; the matching section of the suction valve core and the main pipe section in sealing fit penetrates through the middle hole of the partition and extends into the main pipe section; and two ends of the torsion spring are respectively and fixedly connected to the attraction valve core and the separation gear. So that the sealing matching section of the valve core and the related components of the torsional spring mounting structure form a combined structure, and the requirements of maintenance and the like on convenient disassembly and assembly are met.
Still further preferably, a shaft shoulder is arranged on the rod section of the suction valve core above the separation gear, and an installation groove is arranged on the shaft shoulder; the partition is provided with a fixing hole; two ends of the torsion spring are respectively fixed in the mounting groove and the fixing hole; and the annular cavity between the pipe hole above the partition of the metal framework and the corresponding rod section of the suction valve core forms an accommodating space of the torsion spring. The firmness of the installation of the torsion spring is ensured, and the reliability of the suction operation of the operation part is further improved.
Preferably, a small boss is arranged on the end face, facing the partition, of the shaft shoulder, and a fan-shaped groove for receiving the small boss is arranged on the hole wall of the middle hole of the partition; the small lug boss and the fan-shaped groove form the rotation limiting structure. The simple and reliable rotation limiting structure is formed, the failure rate is reduced, and the reliability is improved.
Preferably, a positioning groove is formed on the step of the step hole; a positioning bulge is formed on the end face of the partition facing the step; the positioning bulge and the positioning groove form a positioning matching structure. So that the phase of the suction cavity is fixed, and the working state of the two-position three-way rotary valve is stable and reliable by combining with the rotary limiting structure, and the third state except the two states is avoided.
Still further preferably, the periphery of the metal framework is wrapped with a silicone rubber sleeve; convex rings which are convex inwards are formed at the mouth parts of the two ends of the silicone rubber sleeve, and the convex rings at the upper ends are paired with the blocks at the upper ends of the metal frameworks; the lower end convex ring is clamped in the annular groove of the locking nut, so that one part of the locking nut extends into the silicon rubber sleeve and is abutted against the metal framework; the suction cavity is fixedly connected with the locking nut in a screwing mode through external threads at the upper end of the main pipe section, and then the suction cavity and the metal framework are relatively fixed. The suction cavity and the suction valve cap are ensured to form a detachable stable structure, and the hand feeling of operation and holding and the use safety are improved by utilizing the characteristics of silicon rubber.
Further preferably, the main pipe section is formed by combining an upper large pipe section and a lower small pipe section into an internal cavity structure with a step hole; the space outside the upper end of the large pipe section is communicated with the outside through a vent hole arranged on the partition, and the small pipe section is communicated with the negative pressure interface; the suction port is communicated with the inner cavity of the large pipe section through the through hole of the large pipe section, the pipe wall of the large pipe section is also provided with an arc-shaped groove which penetrates through the pipe orifice at the upper end, and the arc-shaped groove is staggered with the through hole of the suction port; the matching section of the suction valve core is in sealing fit with the inner hole of the large pipe section; a blind hole with a hole facing the negative pressure port is formed on the suction valve core, a transverse through hole is formed at the bottom of the blind hole and penetrates through the blind hole, and a three-way hole structure is formed by the transverse through hole and the blind hole; when the suction valve core is at two angle limit positions, the suction valve core is communicated with the through hole and the arc-shaped groove respectively, and the depth of the arc-shaped groove extending into the small pipe section is not lower than the bottom end of the suction valve core. The negative pressure interface is communicated with the external atmosphere in a non-suction state through a simple and effective structure.
Preferably, a positioning cover plate is arranged at the upper pipe orifice of the metal framework, a cover plate vent hole is formed in the positioning cover plate, and the cover plate vent hole communicates the inner space of the large pipe section on the main pipe section with the outside; the upper part of the suction valve core penetrates through the end part of the positioning cover plate and is fixedly connected with a suction top cap, and the suction top cap forms a synchronous rotating structure through a flat cutting surface on the suction valve core. The positioning cover plate is provided with the cover plate vent hole communicated with the metal framework inner cavity and the outside, so that the palm does not block the cover plate vent hole when the operating component is held by hand, and the negative pressure interface is communicated with the outside atmosphere under the non-suction state.
In order to achieve the second object, the invention adopts the following technical scheme.
An endoscope includes an operation portion suction structure that achieves the first object.
The endoscope adopting the scheme is provided with the operation part suction structure, and is convenient to operate and reliable in function.
The invention has the advantages of compact layout of the suction structure of the operation part, convenient operation and long service life. The endoscope has the operation part structure, and is good in controllability and reliable in function.
Drawings
FIG. 1 is a schematic isometric view of a portion of the structure of the natural state of the invention.
Fig. 2 is a partial structural sectional view in a natural state of the present invention.
Fig. 3 is a partially schematic perspective view showing the suction state of the present invention.
Fig. 4 is a partial structural sectional view of the suction state of the present invention.
Fig. 5 is a partial structural axial schematic view of the present invention.
Fig. 6 is a schematic exploded view of a part of the structure of the present invention.
Fig. 7 is a schematic perspective view of the upper structure of the suction bonnet of the present invention.
Fig. 8 is a schematic perspective view of the lower structure of the suction bonnet of the present invention.
Fig. 9 is a schematic perspective view of the structure of the suction chamber in the present invention.
Fig. 10 is a schematic perspective view of the torsion spring of the present invention.
Detailed Description
The present invention is further described with reference to the accompanying drawings, but the invention is not limited thereby within the scope of the described embodiments.
The suction cavity 7 is fixedly connected with a suction valve cap 5 with a tubular structure through the upper end of the main pipe section, the suction valve cap 5 comprises a metal framework 5B, and a partition is arranged in the middle of a pipe hole of the metal framework 5B; the matching section of the suction valve core 4 in sealing fit with the main pipe section penetrates through the middle hole of the partition and extends into the main pipe section; and two ends of the torsion spring 8 are respectively and fixedly connected to the attraction valve core 4 and the gear.
A shaft shoulder is arranged on the rod section of the suction valve core 4 above the separation gear, and an installation groove 4b is arranged on the shaft shoulder; the partition is provided with a fixing hole 5 Bc; two ends 8a and 8b of the torsion spring 8 are respectively fixed in the mounting groove 4b and the fixing hole 5 Bc; and an annular cavity between the pipe hole above the partition of the metal framework 5B and the corresponding rod section of the suction valve core 4 forms an accommodating space of the torsion spring 8. The end face, facing the partition, of the shaft shoulder is provided with a small boss 4f, and the hole wall of a middle hole of the partition is provided with a fan-shaped groove 5Ba for receiving the small boss 4 f; the small boss 4f and the fan-shaped groove 5Ba form the rotation limiting structure. A positioning groove 7a is formed on the step of the step hole; a positioning bulge 5Bd is formed on the end face of the partition facing the step; the positioning protrusion 5Bd and the positioning groove 7a form a positioning matching structure.
In addition, the periphery of the metal framework 5B is wrapped with a silicon rubber sleeve 5A; convex rings which are convex inwards are formed at the two end openings of the silicon rubber sleeve 5A, and the convex rings at the upper end form a block for the upper end of the metal framework 5B; the lower end convex ring is clamped in the annular groove of the locking nut 6, so that a part of the locking nut 6 extends into the silicon rubber sleeve 5A and is abutted against the metal framework 5B; the suction cavity 7 is fixedly connected with the locking nut 6 through the external thread at the upper end of the main pipe section in a screwing mode, and therefore the suction cavity 7 and the metal framework 5B are relatively fixed.
The main pipe section is formed by combining an upper large pipe section and a lower small pipe section into an internal cavity structure with a step hole; the space outside the upper end of the large pipe section is communicated with the outside through a vent hole 5Bb arranged on the partition, and the small pipe section is communicated with the negative pressure interface 7 c; the suction port 7b is communicated with the inner cavity of the large pipe section through a through hole of the large pipe section, an arc-shaped groove 7e which penetrates through the pipe orifice at the upper end is further arranged on the pipe wall of the large pipe section, and the arc-shaped groove 7e is staggered with the through hole of the suction port 7 b; the matching section of the suction valve core 4 is in sealing fit with the inner hole 7d of the large pipe section; a blind hole 4d with an orifice facing the negative pressure port 7c is formed on the suction valve core 4, a transverse through hole 4e is formed at the bottom of the blind hole 4d, and the transverse through hole 4e and the blind hole 4d penetrate through to form a three-way hole structure; when the suction valve core 4 is at two angle limit positions, the suction valve core is respectively communicated with the through hole and the arc-shaped groove 7e, and the depth of the arc-shaped groove 7e extending into the small pipe section is not lower than the bottom end of the suction valve core 4.
A positioning cover plate 9 is arranged at the upper end pipe orifice of the metal framework 5B, a cover plate vent hole 9a is formed in the positioning cover plate 9, and the cover plate vent hole 9a communicates the inner space of the large pipe section on the main pipe section with the outside; the suction top cap 2 connected with the end part of the suction valve core 4 penetrating through the positioning cover plate 9 is fixed through a screw 3, and the suction top cap 2 is also in clamping fit with a flat cutting surface 4a on the suction valve core 4 to form a synchronous rotating structure so as to transmit wrenching torque through the synchronous rotating structure. The positioning cover plate 9 and the suction valve cap 5 are arranged in the rear shell 1, and the rear shell 1 is provided with a vent hole 1a for communicating the inner space with the outside atmosphere.
The operation of the endoscope having the operation portion suction structure of embodiment 1 is as follows.
In the natural state, the attraction valve body 4 is in the state shown in fig. 1 in which the tip of the needle attracting the top cap 2 is positioned to the right in the drawing under the torsion force of the torsion spring 8. As shown in fig. 2, at this time, the cylindrical surface of the suction valve core 4 blocks the through port through which the suction port 7b communicates with the main pipe section; a transverse through hole 4e on the suction valve core 4 is communicated with an arc-shaped groove 7e on the main pipe section; the arc-shaped groove 7e is communicated with the external atmospheric environment sequentially through a cavity at the lower part of the metal framework 5B, a vent hole 5Bb on the partition, a cavity at the upper part of the metal framework 5B, a cover plate vent hole 9a on the positioning cover plate 9, the internal space of the rear shell 1 and a vent hole 1a on the rear shell 1; meanwhile, the transverse through hole 4e on the suction valve core 4 is also communicated with the negative pressure port 7c through a blind hole 4d with an opening facing the negative pressure port 7 c. Therefore, in the natural state, the negative pressure environment generated by the suction pump is communicated with the atmosphere through the negative pressure port 7c, and is not communicated with the suction port 7b, so that the suction function is not provided.
When the suction is needed, the torsion of the torsion spring 8 is overcome by bare hands, and the suction top cap 2 is pulled leftwards to the position shown in figure 3; at the moment, the cylindrical surface of the suction valve core 4 plugs the arc-shaped groove 7e on the main pipe section, and a through hole communicated with the main pipe section is plugged; then the external atmospheric environment is disconnected with the transverse through hole 4e on the suction valve core 4; one end port of a transverse through hole 4e on the suction valve core 4 is communicated with the suction port 7b, and the other end port is blocked by the hole wall of an inner hole of the main pipe section; the transverse through hole 4e on the suction valve core 4 is also communicated with the negative pressure port 7c through a blind hole 4d with an opening facing the negative pressure port 7 c. Therefore, in the suction state, the negative pressure port 7c communicates with the suction port 7b, and a suction pump connected to the negative pressure port 7c generates a negative pressure environment to perform a suction action, thereby achieving a suction purpose.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. An endoscope operation part suction structure comprises a suction valve core (4) and a suction cavity (7), wherein a suction interface (7 b) and a negative pressure interface (7 c) are arranged on the suction cavity (7); the device is characterized in that the suction cavity (7) is provided with a main pipe section, and the suction valve core (4) is rotatably connected with the main pipe section in a sealing fit manner to form a two-position three-way rotary valve structure with the suction cavity (7); the suction valve core (4) is limited by a rotation limiting structure to rotate within a set angle range; so that the negative pressure port (7 c) is respectively communicated with the suction port (7 b) and the outside at two angle limit positions; the upper end of the suction valve core (4) is fixedly connected with a suction top cap (2) through a flat cutting surface (4 a) in a clamping fit mode, the suction top cap (2) is exposed outside the rear shell (1), the suction top cap (2) is in a pointer shape, and a force application part (2 a) which extends downwards and is convenient for being pulled by a thumb is formed at the far end of the pointer; the attraction valve core (4) is connected with a torsion spring (8); the suction cavity (7) is fixedly connected with a suction valve cap (5) with a tubular structure through the upper end of the main pipe section, the suction valve cap (5) comprises a metal framework (5B), and the middle part of a pipe hole of the metal framework (5B) is provided with a baffle; the matching section of the suction valve core (4) and the main pipe section in sealing fit penetrates through the middle hole of the partition and extends into the main pipe section; two ends of the torsion spring (8) are respectively and fixedly connected to the attraction valve core (4) and the baffle; a shaft shoulder is arranged on the rod section of the suction valve core (4) above the separation gear, and an installation groove (4 b) is arranged on the shaft shoulder; the partition is provided with a fixing hole (5 Bc); two ends of the torsion spring (8) are respectively fixed in the mounting groove (4 b) and the fixing hole (5 Bc); and an annular cavity between the pipe hole above the partition of the metal framework (5B) and the corresponding rod section of the suction valve core (4) forms an accommodating space of the torsion spring (8).
2. The endoscope operation portion suction structure according to claim 1, wherein a small boss (4 f) is provided on an end surface of the shaft shoulder facing the barrier, and a fan-shaped groove (5 Ba) for receiving the small boss (4 f) is provided on a hole wall of a central hole of the barrier; the small boss (4 f) and the fan-shaped groove (5 Ba) form the rotary limiting structure.
3. The endoscope operating portion attracting structure according to claim 1, wherein the main tube segment is formed of an upper large tube segment and a lower small tube segment combined to form an inner cavity structure having a stepped hole; the space outside the upper end of the large pipe section is communicated with the outside through a vent hole (5 Bb) arranged on the partition, and the small pipe section is communicated with the negative pressure interface (7 c); the suction port (7 b) is communicated with the inner cavity of the large pipe section through the through hole of the large pipe section, an arc-shaped groove (7 e) which penetrates through the pipe orifice at the upper end is further formed in the pipe wall of the large pipe section, and the arc-shaped groove (7 e) is staggered with the through hole of the suction port (7 b); the matching section of the suction valve core (4) is in sealing fit with the inner hole (7 d) of the large pipe section; a blind hole (4 d) with an orifice facing the negative pressure port (7 c) is formed in the suction valve core (4), a transverse through hole (4 e) is formed at the bottom of the blind hole (4 d), the transverse through hole (4 e) is penetrated through the blind hole (4 d), and a three-way hole structure is formed between the transverse through hole (4 e) and the blind hole; when the suction valve core (4) is at two angle limit positions, the suction valve core is communicated with the through hole and the arc-shaped groove (7 e) respectively, and the depth of the arc-shaped groove (7 e) extending into the small pipe section is not lower than the bottom end of the suction valve core (4).
4. The endoscope operating portion suction structure according to claim 3, wherein a positioning groove (7 a) is formed on a step of the stepped hole; a positioning bulge (5 Bd) is formed on the end face of the partition facing the step; the positioning bulge (5 Bd) and the positioning groove (7 a) form a positioning matching structure.
5. The endoscope operation part suction structure according to claim 3, wherein a positioning cover plate (9) is provided at an upper end pipe orifice of the metal framework (5B), a cover plate vent hole (9 a) is provided on the positioning cover plate (9), and the cover plate vent hole (9 a) communicates the inner space of the main pipe section on the main pipe section with the outside; the upper part of the suction valve core (4) penetrates through the positioning cover plate (9), and the suction top cap (2) forms a synchronous rotating structure through a flat cutting surface (4 a) on the suction valve core (4).
6. The endoscope operating portion suction structure according to claim 1, wherein the metal skeleton (5B) is peripherally wrapped with a silicone rubber sleeve (5A); two ports of the silicon rubber sleeve (5A) are provided with convex rings which are convex inwards, and the upper end convex rings form a block for the upper end of the metal framework (5B); the lower end convex ring is clamped in an annular groove of the locking nut (6) so that one part of the locking nut (6) extends into the silicon rubber sleeve (5A) and is abutted against the metal framework (5B); the suction cavity (7) is fixedly connected with the locking nut (6) in a screwing mode through external threads at the upper end of the main pipe section, and then the suction cavity (7) is relatively fixed with the metal framework (5B).
7. An endoscope comprising an operation portion suction structure, characterized in that the operation portion suction structure is constituted by the operation portion suction structure according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910883819.XA CN110584574B (en) | 2019-09-17 | 2019-09-17 | Endoscope operation portion suction structure and endoscope |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910883819.XA CN110584574B (en) | 2019-09-17 | 2019-09-17 | Endoscope operation portion suction structure and endoscope |
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| CN110584574A CN110584574A (en) | 2019-12-20 |
| CN110584574B true CN110584574B (en) | 2022-04-29 |
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| CN201910883819.XA Active CN110584574B (en) | 2019-09-17 | 2019-09-17 | Endoscope operation portion suction structure and endoscope |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111297306A (en) * | 2019-12-05 | 2020-06-19 | 重庆金山医疗技术研究院有限公司 | Suction assembly for endoscope and endoscope |
| CN115089091B (en) * | 2022-06-30 | 2023-06-30 | 湖南省华芯医疗器械有限公司 | Suction valve assembly, endoscope handle and endoscope |
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| JP2008228990A (en) * | 2007-03-20 | 2008-10-02 | Fujinon Corp | Suction device of endoscope |
| CN203915620U (en) * | 2014-04-11 | 2014-11-05 | 福建省百仕韦医用高分子股份有限公司 | Medical rotary switch joint |
| CN204293107U (en) * | 2014-11-20 | 2015-04-29 | 珠海迈德豪医用科技有限公司 | A kind of suction device of endoscope |
| CN204864502U (en) * | 2015-08-22 | 2015-12-16 | 北京大学深圳医院 | Peritoneoscope is aspirator for complex |
| CN207886188U (en) * | 2017-07-03 | 2018-09-21 | 重庆金山医疗器械有限公司 | A kind of endoscope Attraction structure |
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2019
- 2019-09-17 CN CN201910883819.XA patent/CN110584574B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008228990A (en) * | 2007-03-20 | 2008-10-02 | Fujinon Corp | Suction device of endoscope |
| CN203915620U (en) * | 2014-04-11 | 2014-11-05 | 福建省百仕韦医用高分子股份有限公司 | Medical rotary switch joint |
| CN204293107U (en) * | 2014-11-20 | 2015-04-29 | 珠海迈德豪医用科技有限公司 | A kind of suction device of endoscope |
| CN204864502U (en) * | 2015-08-22 | 2015-12-16 | 北京大学深圳医院 | Peritoneoscope is aspirator for complex |
| CN207886188U (en) * | 2017-07-03 | 2018-09-21 | 重庆金山医疗器械有限公司 | A kind of endoscope Attraction structure |
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