CN111150437A - Auxiliary device for treating calcaneus fracture under arthroscope and operation method thereof - Google Patents
Auxiliary device for treating calcaneus fracture under arthroscope and operation method thereof Download PDFInfo
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- CN111150437A CN111150437A CN202010054331.9A CN202010054331A CN111150437A CN 111150437 A CN111150437 A CN 111150437A CN 202010054331 A CN202010054331 A CN 202010054331A CN 111150437 A CN111150437 A CN 111150437A
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- inner core
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- positioning
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/0218—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors for minimally invasive surgery
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/025—Joint distractors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8897—Guide wires or guide pins
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/90—Guides therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
- A61B2090/0801—Prevention of accidental cutting or pricking
- A61B2090/08021—Prevention of accidental cutting or pricking of the patient or his organs
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Abstract
The invention provides an auxiliary device for treating calcaneus fracture under an arthroscope, which comprises a simple retractor, a first auxiliary mechanism and a second auxiliary mechanism, wherein the first auxiliary mechanism comprises a first guide pin, a first inner core and a Y-shaped sleeve, and the second auxiliary mechanism comprises a second guide pin, a second inner core and a positioning sleeve; the invention also provides a positioning operation method of the first auxiliary mechanism and the second auxiliary mechanism. By utilizing the operation method, the Y-shaped sleeve and the positioning sleeve can be smoothly fixed, the Y-shaped sleeve and the positioning sleeve can be used for conveniently realizing the operation of the subtalar arthroscope and the manipulator, so that the smooth operation is facilitated, meanwhile, the Y-shaped sleeve and the positioning sleeve can prevent the soft tissue from being damaged when the subtalar arthroscope and the manipulator repeatedly go down, and the operation effect can be ensured.
Description
Technical Field
The invention relates to an auxiliary device for treating calcaneus fracture under arthroscope and an operation method thereof.
Background
Calcaneus fracture is the most common tarsal bone fracture, and can cause the height reduction of the calcaneus and the collapse of the arch of foot, so that the appearance and the mechanical stability of the calcaneus are influenced; causing intra-articular fractures can cause traumatic arthritis of the subtalar joints; the calcaneus is widened to cause complications such as tendon jamming and difficulty in wearing shoes, and foot dysfunction is caused. At present, the incision reduction internal fixation method becomes the most common and effective method for treating the displaced calcaneus fracture, but complications such as nonunion of postoperative incision soft tissue, exposure of internal articles, postoperative infection, osteomyelitis and the like exist, and the operation treatment effect is influenced. When the calcaneus fracture is treated under the subtalar arthroscope, the operation is not easy because of narrow subtalar gaps, the clinical application is not popularized, and the repeated implantation of the subtalar arthroscope can easily cause soft tissue injury and increase the probability of postoperative infection.
Disclosure of Invention
The invention aims to provide an auxiliary device for treating calcaneal fracture under an arthroscope and an operation method thereof.
The technical scheme adopted by the invention for solving the technical problems is as follows: an auxiliary device for treating calcaneus fracture under arthroscope comprises a simple retractor, a first auxiliary mechanism and a second auxiliary mechanism, the simple retractor comprises a threaded pipe and an adjusting threaded rod, one end of the adjusting threaded rod is sleeved in the threaded pipe, an adjusting seat is fixedly arranged at the other end of the adjusting threaded rod, a first supporting rod distributed along the radial direction of the adjusting threaded rod is arranged on the adjusting seat, the first supporting rod can freely rotate by taking the axis of the adjusting threaded rod as a central axis, a fixed seat is fixedly arranged at the outer end of the threaded pipe, a second support rod distributed along the radial direction of the threaded pipe is fixedly arranged on the fixed seat, the upper ends of the first supporting rod and the second supporting rod are hinged with a retraction rod, and the retraction rod freely swings in a radial plane of the adjusting threaded rod;
the first auxiliary mechanism comprises a first guide pin, a first inner core and a Y-shaped sleeve, the first guide pin fixedly penetrates through the middle part of the first inner core, the Y-shaped sleeve can be sleeved on the first inner core, and the Y-shaped sleeve can freely slide relative to the first inner core; the Y-shaped sleeve comprises a first inlet end, a second inlet end and an outlet end, a plurality of first positioning holes are formed in the outer edges of the first inlet end and the second inlet end, and second positioning holes corresponding to the first positioning holes are formed in the outer edge of the outlet end;
the second auxiliary mechanism comprises a second guide pin, a second inner core and a positioning sleeve, the second guide pin fixedly penetrates through the middle of the second inner core, the positioning sleeve can be sleeved on the second inner core, and the positioning sleeve can freely slide relative to the second inner core.
Preferably, a first annular band is disposed outside an upper end of the first inner core.
Preferably, a second annular band is disposed outside an upper end of the second inner core.
Furthermore, a support lug is arranged on one side of the upper part of the positioning sleeve.
Further, the lower end of the positioning sleeve is in a semi-tubular shape.
The invention also provides a using and operating method of the first auxiliary mechanism, which comprises the following steps:
s1, fixing the first guide pin and the first inner core at corresponding positions;
s2, clamping the Y-shaped sleeve, slowly sleeving the outlet end of the Y-shaped sleeve on the first inner core, and slowly pushing the Y-shaped sleeve to slowly move downwards on the first inner core until the Y-shaped sleeve reaches a proper position;
s3, fixing the Y-shaped sleeve by penetrating the traction Kirschner wire through the first positioning hole and the second positioning hole;
s4, the first guide pin and the first inner core are taken out from the first inlet end or the second inlet end of the upper part of the Y-shaped cannula, and then the positioning of the Y-shaped cannula is completed;
the invention also provides a using and operating method of the second auxiliary mechanism, which comprises the following steps:
s1, fixing the second guide pin and the second inner core at corresponding positions;
s2, clamping the positioning sleeve, slowly sleeving the lower end of the positioning sleeve on the second inner core, and slowly pushing the positioning sleeve to slowly move downwards on the second inner core until the positioning sleeve reaches a proper position;
and S3, the second guide pin and the second inner core are taken out of the positioning sleeve, and then the positioning of the positioning sleeve is completed.
The invention has the beneficial effects that: the invention has simple structure and convenient use and operation; in an actual operation, the Y-shaped sleeve and the positioning sleeve are fixed and positioned according to a fracture injury position, after the Y-shaped sleeve and the positioning sleeve are positioned, the fracture end is favorably exposed, meanwhile, the subtalar arthroscope descends by utilizing the Y-shaped sleeve and the positioning sleeve, the operation of the subtalar arthroscope is favorably carried out, the wound condition is favorably observed through the subtalar arthroscope, and the manipulator descends through the Y-shaped sleeve, so that the treatment of hematoma and soft tissue at the fracture end is favorably realized; the subtalar arthroscope and the manipulator repeatedly descend through the Y-shaped sleeve and the positioning sleeve, so that the damage to soft tissues is reduced, and the operation effect is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are part of the preferred embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of a simple retractor according to the present invention;
FIG. 2 is a schematic structural diagram of a first lead and a first core;
FIG. 3 is a schematic structural view of a Y-shaped cannula;
FIG. 4 is a schematic diagram of the Y-shaped cannula sliding guided by the first guide pin and the first inner core;
FIG. 5 is a schematic structural diagram of a second lead and a second core;
FIG. 6 is a schematic view of the positioning sleeve;
FIG. 7 is a schematic view of the guiding sliding of the positioning sleeve by the second guide pin and the second inner core;
FIG. 8 is an enlarged view taken at A in FIG. 2;
FIG. 9 is an enlarged view of FIG. 3 at B;
FIG. 10 is an enlarged view at C of FIG. 3;
FIG. 11 is an enlarged view of FIG. 5 at D;
in the figure: 11 threaded pipes, 111 fixed seats, 112 second support rods, 12 adjusting threaded rods, 121 adjusting seats, 122 first support rods, 13 retracting rods, 21 first guide pins, 22 first inner cores, 221 first annular belts, 23Y-shaped sleeves, 231 first inlet ends, 232 second inlet ends, 233 outlet ends, 234 first positioning holes, 235 second positioning holes, 31 second guide pins, 32 second inner cores, 321 second annular belts, 33 positioning sleeves and 331 support lugs.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the specific embodiments and accompanying drawings 1 to 11, and it is obvious that the described embodiments are only a part of the preferred embodiments of the present invention, and not all embodiments. Those skilled in the art can make similar modifications without departing from the spirit of the invention, and therefore the invention is not limited to the specific embodiments disclosed below.
The invention provides an auxiliary device for treating calcaneal fracture under arthroscope, which comprises a simple retractor, a first auxiliary mechanism and a second auxiliary mechanism, wherein the simple retractor comprises a threaded pipe 11 and an adjusting threaded rod 12, one end of the adjusting threaded rod 12 is sleeved in the threaded pipe 11, the other end of the adjusting threaded rod 12 is fixedly provided with an adjusting seat 121, the adjusting seat 121 is provided with a first supporting rod 122 distributed along the radial direction of the adjusting threaded rod 12, the first supporting rod 122 can freely rotate by taking the axis of the adjusting threaded rod 12 as a central axis, the outer end of the threaded pipe 11 is fixedly provided with a fixed seat 111, the fixed seat 111 is fixedly provided with a second supporting rod 112 distributed along the radial direction of the threaded pipe 11, the upper ends of the first supporting rod 122 and the second supporting rod 112 are respectively provided with a retraction rod 13 in a hinged mode, and the distraction rods 13 freely swing in the radial plane of the adjusting threaded rod 12, in practical application, the adjustment of the distance between the two distraction rods 13 can be realized by rotating the adjusting threaded rod 12, then, in an operation, the subtalar joint is expanded and exposed by using the simple retractor, the calcaneus height and length are restored by applying continuous bilateral symmetry traction, the calcaneus inversion is corrected, and the perspective examination of the C-shaped arm in the operation is not influenced.
The first auxiliary mechanism comprises a first guide pin 21, a first inner core 22 and a Y-shaped sleeve 23, the first guide pin 21 is fixedly penetrated through the middle part of the first inner core 22, the Y-shaped sleeve 23 can be sleeved on the first inner core 22, and the Y-shaped sleeve 23 can freely slide relative to the first inner core 22; the Y-shaped casing 23 comprises a first inlet 231, a second inlet 232 and an outlet 233, a plurality of first positioning holes 234 are disposed on the outer edges of the first inlet 231 and the second inlet 232, and a second positioning hole 235 corresponding to the first positioning holes 234 is disposed on the outer edge of the outlet 233, so that in practical applications, in order to facilitate the clamping of the first guide pin 21 and the first inner core 22 and to facilitate the taking of the first guide pin 21 and the first inner core 22 out of the Y-shaped casing 23, a first annular belt 221 is disposed on the outer side of the upper end of the first inner core 22.
The second auxiliary mechanism comprises a second guide pin 31, a second inner core 32 and a positioning sleeve 33, the second guide pin 31 is fixedly penetrated through the middle of the second inner core 32, the positioning sleeve 33 can be sleeved on the second inner core 32, and the positioning sleeve 33 can freely slide relative to the second inner core 32, in practical application, in order to facilitate the clamping of the second guide pin 31 and the second inner core 32 and the taking of the second guide pin 31 and the second inner core 32 out of the positioning sleeve 33, a second annular belt 321 is arranged outside the upper end of the second inner core 32; in order to facilitate the holding of the positioning sleeve 33, a support lug 331 is provided on the upper side of the positioning sleeve 33, and further, in order to facilitate observation and evaluation of the reduction of the fracture of the posterior lateral edge of the calcaneus through the positioning sleeve 33 by the subtalar arthroscope, the lower end of the positioning sleeve 33 is formed in a semi-tubular shape, and when the lower portion of the positioning sleeve 33 is formed in a semi-tubular shape, it is possible to block the soft tissue with the side having the tube wall, and then, observation is performed with the side having no tube wall.
The invention also provides a using and operating method of the first auxiliary mechanism, which comprises the following steps:
s1, fixing the first guide pin 21 and the first inner core 22 at corresponding positions;
s2, the Y-shaped sleeve 23 is clamped, and then the outlet end 233 of the Y-shaped sleeve 23 is slowly sleeved on the first inner core 22
Then, the Y-shaped sleeve 23 is slowly pushed to move downwards on the first inner core 22 until the Y-shaped sleeve 23 reaches a proper position;
s3, fixing the Y-shaped sleeve 23 by penetrating a traction Kirschner wire through the first positioning hole 234 and the second positioning hole 235;
s4, the first guide pin 21 and the first inner core 22 are taken out from the first entrance end 231 or the second entrance end 232 of the upper part of the Y-shaped cannula 23, and then the positioning of the Y-shaped cannula 23 is completed.
The invention also provides a using and operating method of the second auxiliary mechanism, which comprises the following steps:
s1, fixing the second guide pin 31 and the second inner core 32 at corresponding positions;
s2, clamping the positioning sleeve 33, slowly sleeving the lower end of the positioning sleeve 33 on the second inner core 32, and slowly pushing the positioning sleeve 33 to slowly move downwards on the second inner core 32 until the positioning sleeve reaches a proper position;
s3, the second guide pin 31 and the second inner core 32 are taken out from the positioning sleeve 33, and then the positioning of the positioning sleeve 33 is completed.
The operation method for the reduction and internal fixation of the fracture of the root bone by using the device provided by the invention comprises the following steps:
firstly, implanting a traction kirschner wire from the position of about 1cm of the anterior and lateral sides of the lateral malleolus and penetrating the traction kirschner wire to the shank side, wherein the direction is vertical to the sagittal plane; implanting a traction kirschner wire from a calcaneal tubercle and penetrating the traction kirschner wire to the shin side (wherein the insertion position and the insertion direction of the kirschner wire of the calcaneal tubercle depend on the position of a calcaneal fracture line, the variation of a Bohler angle and the situation of whether the calcaneal tubercle has the varus deformity), then implanting a simple retractor at the fracture, continuously and symmetrically retracting on two sides, recovering the length and the height of the calcaneus and correcting the calcaneus varus;
secondly, determining the entrance path of the subtalar arthroscope from a front outer side entrance and a rear outer side entrance by adopting the diameter of 2.7mm and the angle of 15 degrees, determining the entrance of the subtalar arthroscope and marking, cutting a notch with the diameter of about 1cm from the front outer side entrance, placing a first guide pin 21 and a first inner core 22, implanting a Y-shaped cannula 23 through the guiding action of the first guide pin 21 and the first inner core 22 after the proper position is ensured, forming an operation window, then utilizing a Kirschner wire to penetrate through a first positioning hole 234 and a second positioning hole 235 to realize the fixation of the Y-shaped cannula 23, taking the first guide pin 21 and the first inner core 22 out of the Y-shaped cannula 23 after the Y-shaped cannula 23 is fixed, applying the subtalar arthroscope to enter the Y-shaped cannula 23 from a first entrance end 231 or a second entrance end 232, observing the wound surface condition, and enabling a manipulator to enter through the remaining first entrance end 231 or the second entrance end 232, and treating the severed hematoma and soft tissue; implant second guide pin 31 and second inner core 32 from the posterolateral approach, after the position is suitable, through the guide effect of second guide pin 31 and second inner core 32, implant position sleeve 33, position sleeve 33 position is suitable back, take out second guide pin 31 and second inner core 32 from position sleeve 33, then, implant the subtalar arthroscope, the outer lateral border fracture condition that resets behind the aassessment calcaneum, reset the fracture back, observe the case that resets of subtalar joint lateral border from position sleeve 33, carry out the internal fixation through Y shape sleeve 23, then accomplish the calcaneum fracture and reset the internal fixation operation.
In addition to the technical features described in the specification, the technology is known to those skilled in the art.
While the preferred embodiments and examples of the present invention have been described in detail, it will be apparent to those skilled in the art that the invention is not limited thereto, and that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (7)
1. An auxiliary device for treating calcaneus fracture under arthroscope is characterized by comprising a simple retractor, a first auxiliary mechanism and a second auxiliary mechanism, the simple retractor comprises a threaded pipe and an adjusting threaded rod, one end of the adjusting threaded rod is sleeved in the threaded pipe, an adjusting seat is fixedly arranged at the other end of the adjusting threaded rod, a first supporting rod distributed along the radial direction of the adjusting threaded rod is arranged on the adjusting seat, the first supporting rod can freely rotate by taking the axis of the adjusting threaded rod as a central axis, a fixed seat is fixedly arranged at the outer end of the threaded pipe, a second support rod distributed along the radial direction of the threaded pipe is fixedly arranged on the fixed seat, the upper ends of the first supporting rod and the second supporting rod are hinged with a retraction rod, and the retraction rod freely swings in a radial plane of the adjusting threaded rod;
the first auxiliary mechanism comprises a first guide pin, a first inner core and a Y-shaped sleeve, the first guide pin fixedly penetrates through the middle part of the first inner core, the Y-shaped sleeve can be sleeved on the first inner core, and the Y-shaped sleeve can freely slide relative to the first inner core; the Y-shaped sleeve comprises a first inlet end, a second inlet end and an outlet end, a plurality of first positioning holes are formed in the outer edges of the first inlet end and the second inlet end, and second positioning holes corresponding to the first positioning holes are formed in the outer edge of the outlet end;
the second auxiliary mechanism comprises a second guide pin, a second inner core and a positioning sleeve, the second guide pin fixedly penetrates through the middle of the second inner core, the positioning sleeve can be sleeved on the second inner core, and the positioning sleeve can freely slide relative to the second inner core.
2. An aid for use under an arthroscope in the treatment of a calcaneus fracture according to claim 1, wherein a first annular band is provided outside the upper end of the first inner core.
3. An aid for use under an arthroscope in the treatment of a calcaneus fracture according to claim 2, wherein a second annular band is provided outside the upper end of the second inner core.
4. An aid for use under an arthroscope in the treatment of a calcaneus fracture according to claim 3, wherein an ear is provided on the upper side of the positioning sleeve.
5. An aid for use under an arthroscope in the treatment of a calcaneus fracture according to claim 4, wherein the lower end of the positioning sleeve is semi-tubular.
6. A method of operating a first auxiliary mechanism according to claim 1 or 2, comprising the steps of:
s1, fixing the first guide pin and the first inner core at corresponding positions;
s2, clamping the Y-shaped sleeve, slowly sleeving the outlet end of the Y-shaped sleeve on the first inner core, and slowly pushing the Y-shaped sleeve to slowly move downwards on the first inner core until the Y-shaped sleeve reaches a proper position;
s3, fixing the Y-shaped sleeve by penetrating the traction Kirschner wire through the first positioning hole and the second positioning hole;
s4, the first guide pin and the first inner core are taken out from the first entrance end or the second entrance end of the upper part of the Y-shaped cannula, and then the positioning of the Y-shaped cannula is completed.
7. A method of operating a second auxiliary mechanism according to claim 1 or 3 or 4 or 5, comprising the steps of:
s1, fixing the second guide pin and the second inner core at corresponding positions;
s2, clamping the positioning sleeve, slowly sleeving the lower end of the positioning sleeve on the second inner core, and slowly pushing the positioning sleeve to slowly move downwards on the second inner core until the positioning sleeve reaches a proper position;
and S3, the second guide pin and the second inner core are taken out of the positioning sleeve, and then the positioning of the positioning sleeve is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010054331.9A CN111150437B (en) | 2020-01-17 | 2020-01-17 | Auxiliary device for treating calcaneal fracture under arthroscope and operation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010054331.9A CN111150437B (en) | 2020-01-17 | 2020-01-17 | Auxiliary device for treating calcaneal fracture under arthroscope and operation method thereof |
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| CN111150437A true CN111150437A (en) | 2020-05-15 |
| CN111150437B CN111150437B (en) | 2023-06-20 |
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| CN202010054331.9A Active CN111150437B (en) | 2020-01-17 | 2020-01-17 | Auxiliary device for treating calcaneal fracture under arthroscope and operation method thereof |
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| CN209789899U (en) * | 2018-04-02 | 2019-12-17 | 北京大学第三医院 | Three-cavity water injection laparoscope sheath |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO1997029680A1 (en) * | 1996-02-13 | 1997-08-21 | Imagyn Medical, Inc. | Surgical access device and method of constructing same |
| CN102939042A (en) * | 2010-05-11 | 2013-02-20 | 库克医学技术有限责任公司 | Biliary access sheath |
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| CN209789899U (en) * | 2018-04-02 | 2019-12-17 | 北京大学第三医院 | Three-cavity water injection laparoscope sheath |
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| CN111150437B (en) | 2023-06-20 |
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