CN213606559U - Stepless self-locking structure of electron mirror catheter capable of being bent in multiple directions - Google Patents
Stepless self-locking structure of electron mirror catheter capable of being bent in multiple directions Download PDFInfo
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- CN213606559U CN213606559U CN202021869811.2U CN202021869811U CN213606559U CN 213606559 U CN213606559 U CN 213606559U CN 202021869811 U CN202021869811 U CN 202021869811U CN 213606559 U CN213606559 U CN 213606559U
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Abstract
The utility model discloses a stepless auto-lock structure of electron mirror pipe that can multidirectionally bend, including the handle with set up in the handle, coaxial interval arrangement's first steel wire wheel and second steel wire wheel, first steel wire wheel and second steel wire wheel are coaxial respectively to be fixed in first steel wire wheel pivot and second steel wire wheel pivot, the first turning handle of handle fixedly connected with and second turning handle are passed respectively to the one end of first steel wire wheel pivot and the one end of second steel wire wheel pivot, be provided with the first locking structure that can mutually support and make first steel wire wheel pivot locking on the other end outside surface of first steel wire wheel pivot and the one side internal surface of handle, be provided with the second locking structure that can mutually support and make second steel wire wheel pivot locking on the other end outside surface of second steel wire wheel pivot and the opposite side internal surface of handle. The electronic endoscope catheter can enter a human body through a duodenoscope and accurately reach an operation position under a visible condition and keep the position stable.
Description
Technical Field
The utility model relates to the technical field of surgical instruments adopted by a biliopancreatic system, in particular to a stepless self-locking structure of an electronic endoscope catheter capable of being bent in multiple directions.
Background
With the increasing westernization degree of the population dietary structure in China and the common influence of factors such as heredity and environment, the incidence rate of gallstones is gradually increased in recent years. The common bile duct stone accounts for 5-29% of all patients with the common bile stone, and the traditional treatment method of the common bile duct stone is mainly an open abdominal operation, has obvious treatment effect and has certain clinical significance. However, the abdominal operation method is adopted, the wound of a patient is large, the recovery is difficult, along with the improvement and development of a minimally invasive treatment technology, the endoscopic minimally invasive treatment is a direction for more research in the prior biliary calculus clinical treatment, the endoscopic minimally invasive treatment can effectively help the patient to remove the biliary calculus, the influence of the operation on the biliary tract system of the patient is effectively reduced, the patient can recover faster after the operation, and the clinical treatment of the patient is more facilitated. The digestive tract consists of various lumens, and human beings try to observe and treat the lumen lesions, wherein the observation and treatment of cholepancreatic duct lesions, particularly pancreatic duct lesions, are still a difficult problem in the current digestive system diseases, particularly patients who cannot tolerate general anesthesia cholecystectomy, and the operation mode of a duodenoscope and electron scope combined system can be used as a supplementary strategy for treating high-risk cholecystolithiasis combined with secondary common bile duct lithiasis. The method can treat choledocholithiasis, can treat cholecystolithiasis and retain gallbladder function, and provides a new treatment strategy for patients with choledocholithiasis complicated with secondary choledocholithiasis. The advantages of the duodenoscope and electron microscope combined system mode are mainly shown in that: (1) the whole operation process is more minimally invasive, and all operations are completed under the duodenoscope. (2) Only partial patients are subjected to papillary sphincter incision surgery, and gallbladder triangles are not dissected, so that the risk of serious complications is greatly reduced: such as hemorrhage, biliary fistula, bile duct injury, etc. (3) The natural passage is used for finishing the operation, the mucous membrane of the gallbladder is not damaged, the function of protecting the gallbladder is truly achieved, the damage to the sphincter papillae is reduced, the normal physiological anatomy of a patient after the operation is basically recovered, and the life quality after the operation is greatly improved. However, how to design the electronic endoscope catheter and the duodenoscope to stably observe and treat the affected part after entering the human body is a problem at present.
SUMMERY OF THE UTILITY MODEL
The objective of the present invention is to solve the above-mentioned background art deficiencies, and to provide a stepless self-locking structure of an electronic endoscope guiding tube capable of multi-directionally bending, which can make the duodenoscope keep stable position at the position of the human body disease.
In order to achieve the purpose, the utility model discloses a but stepless auto-lock structure of multidirectional crooked electron mirror pipe, be fixed in the multicavity pipe in the handle including handle and one end, its characterized in that: at least two steel wire wheels capable of driving the multi-cavity tube to bend through steering steel wires are arranged in the handle, and a locking structure capable of being matched with each other to lock each steel wire wheel is arranged between each steel wire wheel and the handle.
Furthermore, the steel wire wheel comprises a first steel wire wheel and a second steel wire wheel, a first locking structure which can be matched with each other to lock the first steel wire wheel is arranged between the first steel wire wheel and the handle, and a second locking structure which can be matched with each other to lock the second steel wire wheel is arranged between the second steel wire wheel and the handle.
Further, the first steel wire wheel and the second steel wire wheel are coaxially fixed to a first steel wire wheel rotating shaft and a second steel wire wheel rotating shaft respectively, one end of the first steel wire wheel rotating shaft penetrates through the handle and is fixedly provided with a first rotating handle, the other end of the first steel wire wheel rotating shaft is coaxially fixed with the first steel wire wheel, the first steel wire wheel rotating shaft is a cylindrical shaft with an axial through hole, the second steel wire wheel rotating shaft is a hollow shaft which is coaxially inserted into the first steel wire wheel rotating shaft, one end of the second steel wire wheel rotating shaft penetrates through the first rotating handle and is fixedly provided with a second rotating handle, and the other end of the second steel wire wheel rotating shaft penetrates through the first steel wire wheel rotating shaft and is fixedly provided with the second steel wire wheel.
Furthermore, the first locking structure comprises an adjusting screw fixed on the inner surface of the handle and provided with a shaft hole, and a first matching part arranged on the outer side surface of the other end of the first steel wire wheel rotating shaft and matched with the shaft hole of the adjusting screw to limit the axial movement of the first steel wire wheel rotating shaft.
Further, the shaft hole of the adjusting screw is close to the first frustum-shaped shaft hole with the diameter being smaller than the diameter being far away from the diameter of one end of the inner surface of the handle, the first matching portion comprises a first frustum-shaped surface arranged on the outer side surface of the other end of the rotating shaft of the first steel wire wheel, and the diameter of the minimum position of the first frustum-shaped surface is larger than the diameter of the minimum position of the first frustum-shaped shaft hole.
Furthermore, one end of the adjusting screw is connected to a cover plate in a threaded mode, and the cover plate is fixed to the inner surface of one side of the handle.
Further, the second locking structure comprises a sleeve arranged on the inner surface of the handle and a second matching part arranged on the outer side surface of the other end of the second steel wire wheel rotating shaft and matched with the sleeve to limit the axial movement of the second steel wire wheel rotating shaft.
Furthermore, a positioning boss fixedly connected with the inner surface of the handle is arranged in the sleeve, and the second matching part comprises a positioning ring platform which can be matched with the positioning boss and is arranged in the sleeve.
Furthermore, a second frustum-shaped shaft hole which is close to the aperture of one end of the inner surface of the handle and is smaller than the aperture of one end of the inner surface of the handle is arranged in the sleeve, the positioning ring platform is a frustum-shaped ring platform matched with the second frustum-shaped shaft hole, and the diameter of the minimum position of the positioning ring platform is larger than the aperture of the minimum position of the second frustum-shaped shaft hole.
Furthermore, a self-locking spring coaxial with the second steel wire wheel rotating shaft is fixedly connected between the first steel wire wheel rotating shaft and the second steel wire wheel rotating shaft.
Furthermore, a groove is formed in the middle of the outer side surface of the first rotating handle, and a cylindrical boss which is matched with the groove and can rotate in the groove is arranged in the middle of the inner side surface of the second rotating handle.
The utility model has the advantages that: the stepless self-locking structure of the electronic endoscope catheter capable of being bent in multiple directions is matched with the electronic endoscope catheter to form an integrated structure, the electronic endoscope catheter can enter a human body through a duodenoscope, accurately reaches an operation part under a visual condition and keeps the position stable, calculus breaking and calculus removing operations are carried out on gall bladder and bile duct stones, biopsy and guide wire threading operations can be carried out on a diseased part, an operation channel is established at the same time, and the diagnosis accuracy rate and efficiency are effectively improved.
Drawings
FIG. 1 is an axial cross-sectional view of an electron microscope catheter handle structure having a seven-channel multi-lumen tube of the present invention;
FIG. 2 is an axial cross-sectional view of the adjustment screw of FIG. 1;
FIG. 3 is a front isometric view of an electron microscope catheter handle structure having a seven-channel multi-lumen tube of the present invention;
FIG. 4 is a rear isometric view of an electron microscope catheter handle structure having a seven-channel multi-lumen tube of the present invention;
FIG. 5 is a front isometric view of an electron microscope catheter handle structure having an eight channel multi-lumen tube according to the present invention;
FIG. 6 is a rear isometric view of an electron microscope catheter handle structure having an eight channel multi-lumen tube according to the present invention;
FIG. 7 is a perspective view of the internal structure of the handle structure of the electron microscope catheter with an eight-channel multi-lumen tube according to the present invention;
FIG. 8 is a radial cross-sectional view of an eight channel multi-lumen tube of the present invention;
FIG. 9 is a view showing the structure of the fixing of the electron microscope catheter and the duodenoscope according to the present invention;
the device comprises a handle 100, a first wire wheel 101, a second wire wheel 102, a guide wire fixing block 103, a first wire wheel rotating shaft 104, a second wire wheel rotating shaft 105, a first rotating handle 106, a second rotating handle 107, an adjusting screw 108, a first frustum-shaped shaft hole 109, a first frustum-shaped shaft hole 110, a first frustum surface 111, a cover plate 112, a sleeve 113, a second frustum-shaped shaft hole 113, a positioning boss 114, a self-locking spring 115, a cylindrical boss 116, a fixing handle binding band 117, a positioning ring platform 118 and a fixing screw 119;
200-electron microscope catheter, 201-catheter housing (201.1-catheter housing upper cover, 201.2-catheter housing lower cover), 202-multi-lumen tube (202.1-multi-lumen hard tube, 202.2-connecting tube, 202.3-multi-lumen flexible tube), 203-first steering steel wire, 204-second steering steel wire, 205-lens fixing cap, 206-soft protective tube, 207-guide wire channel, 208-instrument channel, 209-water channel, 210-electron microscope channel, 211-optical fiber channel, 212-multi-lumen tube fixing joint, 213-water inlet channel tube, 214-electron microscope connection, 215-drainage channel tube, 216-instrument channel tube, 217-luer joint, 218-electron microscope joint;
300-duodenoscope.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments.
The stepless self-locking electronic endoscope catheter handle shown in fig. 1-9 comprises a handle 100, and a first steel wire wheel 101 and a second steel wire wheel 102 which are arranged in the handle 100 and coaxially arranged at intervals, wherein the first steel wire wheel 101 and the second steel wire wheel 102 are respectively and coaxially fixed on a first steel wire wheel rotating shaft 104 and a second steel wire wheel rotating shaft 105, the first steel wire wheel rotating shaft 104 is a cylindrical shaft with an axial through hole, the second steel wire wheel rotating shaft 105 is a hollow shaft which is coaxially inserted into the first steel wire wheel rotating shaft 104 and has an internal thread, one end of the first steel wire wheel rotating shaft 104 penetrates through the handle 100 and is fixedly connected with a first rotating handle 106, one end of the second steel wire wheel rotating shaft 105 penetrates through the handle 100 and the first rotating handle 106 and is fixedly connected with a second rotating handle 107, and the other end of the second steel wire wheel rotating shaft 105 penetrates through the first steel wire wheel rotating shaft 104 and is fixedly connected with the second.
An adjusting screw 108 with a shaft hole is fixed on the inner surface of the handle 100, the shaft hole of the adjusting screw 108 is a first frustum-shaped shaft hole 109 with one end aperture close to the inner surface of the handle 100 being smaller than the one end aperture far away from the inner surface of the handle 100, the outer side surface of the other end of the first steel wire wheel rotating shaft 104 is a first frustum-shaped surface 110, the diameter of the minimum part of the first frustum-shaped surface 110 is larger than the diameter of the minimum part of the first frustum-shaped shaft hole 109, the first frustum-shaped surface 110 is matched with the first frustum-shaped hole 109, the restoring force of the turning steel wire when the turning steel wire is bent can be just offset by the damping force between the first frustum-shaped hole and the first frustum-shaped.
A sleeve 112 is arranged on the inner surface of the handle 100, a positioning boss 114 fixedly connected with the inner surface of the handle 100 is arranged in the sleeve 112, and a positioning ring platform 118 which can be matched with the positioning boss 114 and is positioned in the sleeve 112 is arranged on the outer side surface of the other end of the second steel wire wheel rotating shaft 105. A second frustum-shaped shaft hole 113 which is close to the inner surface of the handle 100 and has a smaller aperture than the inner surface of the handle 100 is arranged in the sleeve 112, the positioning ring platform 118 is a frustum-shaped ring platform matched with the second frustum-shaped shaft hole 113, and the diameter of the minimum position of the positioning ring platform 118 is larger than the diameter of the minimum position of the second frustum-shaped shaft hole 113. The positioning ring platform 118 is matched with the second cone-shaped shaft hole 113, a damping force exists between the positioning ring platform and the second cone-shaped shaft hole, the damping force between the positioning ring platform and the second cone-shaped shaft hole just offsets the restoring force when the steering steel wire is bent, and the multi-cavity hose 202.3 can be self-locked at any bending position by rotating the second rotating handle 107.
A self-locking spring 115 coaxial with the second wire wheel rotating shaft 105 is fixedly connected between the first wire wheel rotating shaft 104 and the second wire wheel rotating shaft 105. One end of the adjusting screw 108 is screw-coupled to a cover plate 111, and the cover plate 111 is fixed to one side inner surface of the handle 100. The connecting position of the adjusting screw 108 and the cover plate 111 is adjusted through screw threads, so that the position of the adjusting screw 108 in the handle 100 is adjusted to match the compression degree of the self-locking spring 115 to realize self-locking of the first wire wheel 101 and the second wire wheel 102.
A groove is formed in the middle of the outer side surface of the first rotating handle 106, and a cylindrical boss 116 which is matched with the groove and can rotate in the groove is formed in the middle of the inner side surface of the second rotating handle 107. The structures of the column-shaped boss 118 and the second rotating handle 107 prevent the first rotating handle 106 and the second rotating handle 107 from interfering with each other when they rotate with each other.
The utility model discloses well accent curved method of pipe: one end of the multi-cavity tube 202 is fixed in the handle 100, a plurality of channels are arranged in the multi-cavity tube 202 along the axial direction thereof, and comprise a guide wire channel 207 for arranging a guide wire, an instrument channel 208 for placing therapeutic instruments, a water channel 209 for injecting water, an electronic mirror channel 210 for inserting an electronic mirror and an optical fiber channel 211 for illuminating through an optical fiber, the multi-cavity tube 202 comprises a multi-cavity hard tube 202.1, a connecting tube 202.2 and a multi-cavity hose 202.3 which are coaxially connected along the axial direction in sequence, the front end of the multi-cavity hose 202.3 is fixed with a lens fixing cap 205, a steering steel wire is fixed on the lens fixing cap 205, the outer surface of the connecting tube 202.2 can be sleeved with an outer tube for fixing so as to increase the strength of the connecting tube, the structural strength of the multi-; the steering steel wire passes through the wire guide channel 207 of the multi-cavity tube 202, one end of the steering steel wire is fixed on the lens fixing cap 205, the other end of the steering steel wire is fixed on the steel wire wheel, the second rotating handle 107 is stretched outwards or the first rotating handle 106 is pushed inwards to unlock the steel wire wheel, then the rotating handle is rotated, the steering steel wire can be driven by the rotation of the steel wire wheel, the bending adjusting function can be realized, when the multi-cavity hose 202.3 is bent to a proper position, the rotating handle is released, the rotating handle can return to a self-locking position under the action of the self-locking spring 115, and the multi-cavity hose 202.3 is kept at the. The length of the multi-cavity hose 202.3 is selected to be 30-60 mm, and the length can be selected according to the actual use condition and the use position of the product, so that the product can meet the expected requirements.
As shown in fig. 4 to 7, the internal structure of the electron microscope guide tube 200: the multi-lumen tube 202 is fixed to a multi-lumen tube fixing joint 212, the multi-lumen tube fixing joint 212 is fixed to the catheter housing 201, and the multi-lumen tube fixing joint 212 is positioned and fixed by a notch in the catheter housing 201. The multi-lumen tube fixing connector 212 is fixedly connected to an instrument channel tube 216 (communicating with the instrument channel 208) and a water inlet channel tube 213 (communicating with the water channel 209) by bonding, and an electron scope connecting wire 214 (guiding the electron scope and the optical fiber into the electron scope channel 210 and the optical fiber channel 211, respectively) is connected to the rear end of the multi-lumen tube fixing connector 212. The luer 217, the instrument channel tube 216 and the drainage channel tube 215 are connected and fixed on the catheter shell 201, the luer 217 is communicated with the instrument channel tube 216 to facilitate the introduction of instruments, and the drainage channel tube 215 is communicated with the luer 217 to facilitate the drainage of water during surgery through the instrument channel tube 216. The steering steel wire is fixed on the guide wire fixing block 103, the guide wire fixing block 103 is respectively fixed on the first steel wire wheel 101 and the second steel wire wheel 102, the end part of the steering steel wire is fixed on the guide wire fixing block 103, the self-locking spring 115 is sleeved on the second steel wire wheel rotating shaft 105 and is positioned between the first steel wire wheel 101 and the second steel wire wheel 102, and the first rotating handle 106 and the second rotating handle 107 are assembled on the outer side of the self-locking handle 100 and are respectively fixed on the first steel wire wheel rotating shaft 104 and the second steel wire wheel rotating shaft 105. The fixed handle strap 117 is fixed to the handle 100, as shown in fig. 9, and is fixed to the duodenoscope 300 by the strap 117.
As shown in fig. 1-3, the multi-lumen tube can be made into a seven-lumen structure, and the difference between the seven-lumen tube and the eight-lumen tube is that the illuminating part, i.e. the glass fiber, is not provided, the illuminating mode is that the LED lamp is used for illumination, and the LED lamp wiring and the electronic mirror wiring channel share one channel. The electronic mirror connection wire 214 and the water inlet and outlet channel pipe are fixed on the same side of the catheter shell 201, one end of the lighting component is fixed on the lens fixing cap 205, the other end of the lighting component is fixed on the electronic mirror connector 218, and the electronic mirror connector 218 is fixed on the tail end of the handle 100.
The product using method comprises the following steps: the electronic endoscope catheter 200 is used in combination with the duodenoscope 300, and the duodenoscope 300 is firstly inserted into a descending segment of duodenum through a human mouth, a body of the duodenum is straightened, a duodenal papilla is searched, the sphincter of the duodenal papilla is slightly cut, then the duodenal papilla is expanded by an air bag or the air bag directly expands the papilla (the papilla opening exceeds the diameter of the delivery catheter), and a guide wire is left above a diseased part. The handle of the electronic endoscope catheter 200 is fixed on the handle of the duodenoscope through a fixed handle binding band 119, the electronic endoscope catheter 200 is placed (or placed through a guide wire) through a duodenoscope working hole and is sent to a target part, and the front end of the multi-cavity tube 202 is adjusted by adjusting the duodenoscope 300 and rotating the handle to observe the lesion.
For patients with huge choledocholithiasis, the electronic endoscope catheter 200 can look directly at the lower broken stone, then a stone basket is inserted into an instrument channel in the electronic endoscope catheter 200, and the stone is taken out of the choledochal by the stone basket.
For a lesion site biopsy, a biopsy taking operation may be performed under direct vision through the electron scope catheter 200.
If tissue fragments, blood stains, residual calculus and the like affecting observation in the lesion lumen are generated, the lumen can be flushed by water injected through the water inlet channel tube 213 of the electronic endoscope catheter 200, and the flushing water can be discharged through an external suction tube or a syringe through the water discharge channel tube 215.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the structure of the present invention in any way. Any simple modification, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention all still fall within the scope of the technical solution of the present invention.
Claims (10)
1. A stepless self-locking structure of an electronic endoscope catheter capable of being bent in multiple directions comprises a handle (100) and a multi-cavity tube (202) with one end fixed in the handle (100), and is characterized in that: the handle (100) is internally provided with at least two steel wire wheels which can drive the multi-cavity tube (202) to bend through a steering steel wire, and a locking structure which can be matched with each other to lock each steel wire wheel is arranged between each steel wire wheel and the handle (100).
2. The stepless self-locking structure of the electron mirror catheter capable of being bent in multiple directions according to claim 1, wherein: the steel wire wheel comprises a first steel wire wheel (101) and a second steel wire wheel (102), a first locking structure which can be matched with each other to lock the first steel wire wheel (101) is arranged between the first steel wire wheel (101) and the handle (100), and a second locking structure which can be matched with each other to lock the second steel wire wheel (102) is arranged between the second steel wire wheel (102) and the handle (100).
3. The stepless self-locking structure of the electron mirror catheter capable of being bent in multiple directions according to claim 2, wherein: the first steel wire wheel (101) and the second steel wire wheel (102) are respectively and coaxially fixed on a first steel wire wheel rotating shaft (104) and a second steel wire wheel rotating shaft (105), one end of the first steel wire wheel rotating shaft (104) penetrates through the handle (100) and is fixedly provided with a first rotating handle (106), the other end of the first steel wire wheel rotating shaft is coaxially fixed with the first steel wire wheel (101), the first steel wire wheel rotating shaft (104) is a cylindrical shaft with an axial through hole, the second steel wire wheel rotating shaft (105) is a hollow shaft which is coaxially inserted into the first steel wire wheel rotating shaft (104), one end of the second steel wire wheel rotating shaft (105) penetrates through the first rotating handle (106) and is fixedly provided with a second rotating handle (107), and the other end of the second steel wire wheel rotating shaft (104) is fixedly provided with the second steel wire wheel (102).
4. The stepless self-locking structure of the electron mirror catheter capable of being bent in multiple directions according to claim 3, wherein: the first locking structure comprises an adjusting screw (108) which is fixed on the inner surface of the handle (100) and is provided with a shaft hole, and a first matching part which is arranged on the outer side surface of the other end of the first steel wire wheel rotating shaft (104) and is matched with the shaft hole of the adjusting screw (108) to limit the axial movement of the first steel wire wheel rotating shaft (104).
5. The stepless self-locking structure of the electron mirror catheter capable of being bent in multiple directions according to claim 4, wherein: the shaft hole of the adjusting screw (108) is a first frustum-shaped shaft hole (109) which is close to the inner surface of the handle (100) and has one end aperture smaller than the inner surface of the handle (100), the first matching part comprises a first frustum surface (110) which is arranged on the outer side surface of the other end of the first steel wire wheel rotating shaft (104), and the diameter of the minimum position of the first frustum surface (110) is larger than the aperture of the minimum position of the first frustum-shaped shaft hole (109).
6. The stepless self-locking structure of the electron mirror catheter capable of being bent in multiple directions according to claim 4 or 5, wherein: one end of the adjusting screw (108) is connected to a cover plate (111) in a threaded mode, and the cover plate (111) is fixed to the inner surface of one side of the handle (100).
7. The stepless self-locking structure of the electron mirror catheter capable of being bent in multiple directions according to claim 3, wherein: the second locking structure comprises a sleeve (112) arranged on the inner surface of the handle (100) and a second matching part which is arranged on the outer side surface of the other end of the second wire wheel rotating shaft (105) and can be matched with the sleeve (112) to limit the axial movement of the second wire wheel rotating shaft (105).
8. The stepless self-locking structure of an electron mirror catheter capable of being bent in multiple directions according to claim 7, wherein: a positioning boss (114) fixedly connected with the inner surface of the handle (100) is arranged in the sleeve (112), and the second matching part comprises a positioning ring table (118) which can be matched with the positioning boss (114) and is arranged in the sleeve (112).
9. The stepless self-locking structure of an electron mirror catheter capable of being bent in multiple directions according to claim 8, wherein: be provided with in sleeve (112) and be close to handle (100) internal surface one end aperture is less than second frustum shaft hole (113) of keeping away from handle (100) internal surface one end aperture, position ring platform (118) for with second frustum shaft hole (113) complex frustum ring platform, the minimum department diameter of position ring platform (118) is greater than second frustum shaft hole (113) minimum department aperture.
10. The stepless self-locking structure of the electron mirror catheter capable of being bent in multiple directions according to claim 3, wherein: and a self-locking spring (115) coaxial with the second wire wheel rotating shaft (105) is fixedly connected between the first wire wheel rotating shaft (104) and the second wire wheel rotating shaft (105).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021869811.2U CN213606559U (en) | 2020-08-31 | 2020-08-31 | Stepless self-locking structure of electron mirror catheter capable of being bent in multiple directions |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021869811.2U CN213606559U (en) | 2020-08-31 | 2020-08-31 | Stepless self-locking structure of electron mirror catheter capable of being bent in multiple directions |
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| CN213606559U true CN213606559U (en) | 2021-07-06 |
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| CN202021869811.2U Active CN213606559U (en) | 2020-08-31 | 2020-08-31 | Stepless self-locking structure of electron mirror catheter capable of being bent in multiple directions |
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